JP3363030B2 - Low-concentration organic solvent gas processing apparatus and processing method - Google Patents
Low-concentration organic solvent gas processing apparatus and processing methodInfo
- Publication number
- JP3363030B2 JP3363030B2 JP15713196A JP15713196A JP3363030B2 JP 3363030 B2 JP3363030 B2 JP 3363030B2 JP 15713196 A JP15713196 A JP 15713196A JP 15713196 A JP15713196 A JP 15713196A JP 3363030 B2 JP3363030 B2 JP 3363030B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- concentration
- organic solvent
- adsorption
- desorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003960 organic solvent Substances 0.000 title claims description 52
- 238000003672 processing method Methods 0.000 title 1
- 238000001179 sorption measurement Methods 0.000 claims description 86
- 238000002485 combustion reaction Methods 0.000 claims description 69
- 238000003795 desorption Methods 0.000 claims description 54
- 239000003463 adsorbent Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 32
- 238000006864 oxidative decomposition reaction Methods 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 238000002336 sorption--desorption measurement Methods 0.000 claims description 4
- 238000004094 preconcentration Methods 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000008021 deposition Effects 0.000 claims 1
- 239000003054 catalyst Substances 0.000 description 33
- 239000002904 solvent Substances 0.000 description 24
- 238000007084 catalytic combustion reaction Methods 0.000 description 22
- XEKOWRVHYACXOJ-UHFFFAOYSA-N ethyl acetate Substances CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に低濃度の有機溶剤
ガスを安い運転コストで安全に吸着除去する装置及び処
理方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a treatment method for safely adsorbing and removing a low-concentration organic solvent gas at a low operating cost.
【０００２】[0002]
【従来の技術】従来、低濃度の有機溶剤ガスを処理する
場合、低濃度有機溶剤ガスを吸着材に通気吸着させ、吸
着された有機溶剤を小量の加熱気体にて吸着材から脱着
し、脱着された小風量、高濃度の有機溶剤ガスを２次処
理装置で処理する濃縮処理方法が有効な処理方法として
知られている。本装置に使用される吸着濃縮装置には、
少なくとも吸着部と脱着再生部を有する回転型濃縮装置
が一般的に使用される。濃縮された有機溶剤ガスの２次
処理装置としては、処理される有機溶剤が可燃性であれ
ば、触媒燃焼装置などの酸化分解処理装置（燃焼装置）
が一般的に使用される。2. Description of the Related Art Conventionally, when treating a low-concentration organic solvent gas, the low-concentration organic solvent gas is adsorbed on the adsorbent by aeration, and the adsorbed organic solvent is desorbed from the adsorbent with a small amount of heated gas. A concentration treatment method of treating the desorbed small amount of air and high concentration organic solvent gas in a secondary treatment device is known as an effective treatment method. The adsorption concentrator used in this device is
A rotary type concentrator having at least an adsorption section and a desorption regeneration section is generally used. As a secondary treatment device for concentrated organic solvent gas, if the organic solvent to be treated is flammable, oxidation decomposition treatment device (combustion device) such as catalytic combustion device
Is commonly used.
【０００３】回転型吸着濃縮装置と触媒燃焼装置とを組
み合わせた低濃度有機溶剤ガス濃縮処理装置のフローの
１例が図１に示される。ファン１を介して回転型吸着濃
縮装置吸着体２の吸着部２ａに通気された低濃度有機溶
剤ガスは、吸着浄化され放出される。溶剤を吸着した吸
着材は、回転により連続的に吸着部２ａから脱着部２ｂ
へ移動され、ファン３を介して熱交換器４及び加熱器５
にて加熱された小量の空気にて脱着再生される。脱着部
から小量の加熱空気で脱着された有機溶剤は、濃縮ガス
としてファン６を介して熱交換器７及び触媒燃焼装置８
に付設される加熱器８ａにて加熱され触媒８ｂに通気さ
れる。濃縮ガスは、触媒８ｂにて濃縮ガス中の有機溶剤
が酸化分解されることにより浄化され、熱交換器７及び
熱交換器４を経て排出される。本装置は、触媒上での溶
剤の酸化分解時に発生する酸化熱を熱交換器にて熱回収
しているため、触媒に供給される溶剤濃度により回収さ
れる熱量が決定される。触媒に供給される溶剤濃度が低
ければ、当然回収できる熱量が少なくなり、装置全体で
消費されるエネルギー量が増大する。触媒へ供給される
濃縮ガスの溶剤濃度は、吸着濃縮装置の操作条件が一定
の場合には吸着濃縮装置へ通気される処理ガスの濃度に
より決定される。なお、燃焼装置として直接燃焼装置を
使用した場合でも同様である。本装置の基本的な設計
は、吸着濃縮装置へ通気される溶剤濃度の最大値で設計
されることが一般的であるが、実際に装置へ通気される
溶剤濃度は変動することが多く、特に設計時の溶剤濃度
よりも低い濃度にて有機溶剤が吸着濃縮装置へ通気され
た場合には、前記の理由にて、装置で消費されるエネル
ギー量が増大し、実際の消費エネルギー量が設計時のエ
ネルギー消費量をはるかに上回ることがしばし起こる。
相当な時間、吸着濃縮装置へ通気されるガスに溶剤が含
まれない場合（工程からの溶剤発生が停止している場
合）には、吸着濃縮装置および燃焼装置を停止すること
も考えられる。しかしながら、これら装置を停止あるい
は起動するために相当な時間が必要なため、工程での溶
剤発生停止時間が短い場合には、これら装置停止するこ
とは困難である。即ち、排気ガス中の溶剤濃度が設計値
より低い場合に装置で消費されるエネルギーが設計値よ
り大きく上回るという問題を簡易的に解決する適切な方
法が無いという問題点があった。FIG. 1 shows an example of the flow of a low-concentration organic solvent gas concentrating treatment device in which a rotary adsorption concentrating device and a catalytic combustion device are combined. The low-concentration organic solvent gas that has been ventilated through the fan 1 to the adsorption section 2a of the rotary adsorption / concentration device adsorbent 2 is adsorbed and purified, and is released. The adsorbent that has adsorbed the solvent is continuously rotated from the adsorption section 2a to the desorption section 2b by rotation.
Is moved to the heat exchanger 4 and the heater 5 via the fan 3.
It is desorbed and regenerated with a small amount of air heated at. The organic solvent desorbed from the desorption section with a small amount of heated air is concentrated gas through the fan 6 through the heat exchanger 7 and the catalytic combustion device 8.
It is heated by a heater 8a attached to the catalyst and aerated to the catalyst 8b. The concentrated gas is purified by oxidizing and decomposing the organic solvent in the concentrated gas at the catalyst 8b, and is discharged through the heat exchanger 7 and the heat exchanger 4. In this device, the heat of oxidation generated during the oxidative decomposition of the solvent on the catalyst is recovered by the heat exchanger, so the amount of heat recovered is determined by the concentration of the solvent supplied to the catalyst. If the concentration of the solvent supplied to the catalyst is low, the amount of heat that can be recovered is naturally small, and the amount of energy consumed by the entire device increases. The solvent concentration of the concentrated gas supplied to the catalyst is determined by the concentration of the processing gas passed to the adsorption concentration device when the operating conditions of the adsorption concentration device are constant. The same applies when a direct combustion device is used as the combustion device. The basic design of this device is generally designed with the maximum concentration of solvent that is vented to the adsorption concentrator, but the concentration of solvent that is actually vented to the device often fluctuates. When the organic solvent is aerated at a concentration lower than the solvent concentration at the time of design, the amount of energy consumed by the device increases due to the above reason, and the actual amount of energy consumed is at the time of design. It often happens that the energy consumption of far exceeds.
When the gas passed to the adsorption / concentration device does not contain a solvent for a considerable period of time (when the generation of the solvent from the process is stopped), the adsorption / concentration device and the combustion device may be stopped. However, since a considerable amount of time is required to stop or start these devices, it is difficult to stop these devices when the solvent generation stop time in the process is short. That is, there is a problem that there is no suitable method for simply solving the problem that the energy consumed by the device exceeds the design value when the solvent concentration in the exhaust gas is lower than the design value.
【０００４】さらに、燃焼装置で処理できるガス濃度に
は限界がある。例えば、触媒燃焼装置を燃焼装置として
使用する場合、使用される触媒の使用温度には限界があ
る。一般によく使用される白金触媒の使用上限温度は５
００℃程度であり、これ以上の温度では触媒性能の低下
（熱劣化）が起きる。触媒に導入されるガス温度は２５
０〜３５０℃程度であるが、触媒上で有機溶剤が酸化分
解するため、実際の触媒温度は触媒に導入されるガス温
度より高くなる。有機溶剤の酸化分解による触媒温度の
上昇は有機溶剤ガスの濃度により決まる。有機溶剤ガス
の濃度が高い程、触媒温度は上昇する。このため、触媒
で処理できる有機溶剤ガスの濃度には限界があるが、そ
の値はガスの種類により異なる。Furthermore, there is a limit to the gas concentration that can be processed by the combustion device. For example, when using a catalytic combustion device as a combustion device, there is a limit to the operating temperature of the catalyst used. Generally, the upper limit temperature of platinum catalyst used is 5
The temperature is about 00 ° C., and the catalyst performance is deteriorated (thermal deterioration) at a temperature higher than this. The temperature of the gas introduced into the catalyst is 25
Although the temperature is about 0 to 350 ° C., the actual catalyst temperature becomes higher than the gas temperature introduced into the catalyst because the organic solvent is oxidized and decomposed on the catalyst. The increase in catalyst temperature due to the oxidative decomposition of the organic solvent is determined by the concentration of the organic solvent gas. The higher the concentration of the organic solvent gas, the higher the catalyst temperature. Therefore, there is a limit to the concentration of the organic solvent gas that can be treated with the catalyst, but the value varies depending on the type of gas.
【０００５】上記のごとく触媒燃焼装置等の燃焼装置で
処理できるガス濃度には限界があるため、燃焼装置単体
で有機溶剤ガスを処理する際に、一時的にガスの濃度が
限界以上となる場合には、燃焼装置に外気を取り入れ被
処理ガスを希釈するか、燃焼装置に導入されるガス温度
を下げる、などの方法が従来取られている。As described above, since there is a limit to the gas concentration that can be processed by a combustion device such as a catalytic combustion device, when the organic solvent gas is processed by the combustion device alone, the gas concentration temporarily exceeds the limit. In the prior art, methods such as introducing outside air into the combustion device to dilute the gas to be treated or lowering the temperature of the gas introduced into the combustion device have been taken.
【０００６】吸着濃縮装置から発生する濃縮ガスの濃度
は、前記のごとく、吸着濃縮装置に通気される被処理ガ
スの濃度に大きく左右される。特に工程のトラブルが原
因となる濃度変動は、著しいことが多い。このようなガ
スを上記濃縮装置に通気した際には、工程から排出され
るガス濃度の変動を受けて、濃縮装置から排出される濃
縮ガス濃度が変動する。従って、この濃縮ガスを燃焼装
置で処理した際には、濃縮ガス濃度が燃焼装置で処理出
来る限界濃度以上になることがある。この際、従来の燃
焼装置での対処方法を実施した場合には、次のような問
題点があった。まず、燃焼装置に外気を導入した場合に
は、吸着濃縮装置から吸引される濃縮ガス量が減少す
る。このため、ごく小量の加熱気体で吸着材を再生する
ことになり、濃縮ガスが危険な領域まで上昇するだけで
なく、再生時に吸着材に充分な通気がなされないため吸
着材からの放熱が充分出来ず、吸着材が異常発熱する危
険性がある。燃焼装置に外気を導入する際に、濃縮ガス
を大気に放出する方法もあるが、ダンパー、ファンの設
置などで装置が煩雑になり、装置価格も高くなる。外気
を取り入れる方法としては、外気取り入れダンパーを開
けることが一般には行われるが、外気取り入れダンパー
の開閉頻度が年に数回程度の場合、ダンパーの動作不良
が発生しやすく、問題となる場合がある。２点目の燃焼
装置に導入されるガス温度を下げる場合には、ガス温度
をさげても急激には酸化分解反応を低減させることは出
来ない。このため燃焼装置に触媒燃焼装置を使用した場
合には、その触媒の温度が限界温度を越え、触媒の寿命
を低下させることになる。このように上記濃縮装置から
発生する濃縮ガスを燃焼装置で処理するにあたり、濃縮
ガスの濃度が燃焼装置で処理出来る濃度の上限を越えた
場合の簡易的かつ適切な処理方法がないという問題点が
あった。As described above, the concentration of the concentrated gas generated from the adsorption / concentration device greatly depends on the concentration of the gas to be treated which is aerated to the adsorption / concentration device. In particular, concentration fluctuations caused by process troubles are often remarkable. When such a gas is passed through the concentrating device, the concentration of the concentrated gas discharged from the concentrating device changes due to the fluctuation of the concentration of the gas discharged from the process. Therefore, when this concentrated gas is processed by the combustion device, the concentration of the concentrated gas may exceed the limit concentration that can be processed by the combustion device. At this time, when the conventional method for dealing with the combustion device was implemented, there were the following problems. First, when the outside air is introduced into the combustion device, the amount of concentrated gas sucked from the adsorption concentration device decreases. For this reason, the adsorbent is regenerated with a very small amount of heated gas, and not only the concentrated gas rises to a dangerous area, but also the adsorbent is not sufficiently ventilated during regeneration, so that heat is released from the adsorbent. There is a risk that the adsorbent will not generate enough heat and that it will generate abnormal heat. There is also a method of releasing the concentrated gas to the atmosphere when the outside air is introduced into the combustion device, but the installation of a damper and a fan complicates the device and the cost of the device increases. Opening the outside air intake damper is generally performed as a method of taking in outside air.However, if the opening and closing frequency of the outside air intake damper is about several times a year, malfunction of the damper is likely to occur, which may cause a problem. . When the temperature of the gas introduced into the second combustion device is lowered, the oxidative decomposition reaction cannot be rapidly reduced even if the gas temperature is lowered. Therefore, when a catalytic combustion device is used as the combustion device, the temperature of the catalyst exceeds the limit temperature and the life of the catalyst is shortened. As described above, when treating the concentrated gas generated from the concentrating device in the combustion device, there is a problem that there is no simple and appropriate treatment method when the concentration of the concentrated gas exceeds the upper limit of the concentration that can be treated in the combustion device. there were.
【０００７】[0007]
【発明が解決しようとする課題】本発明は上記のような
問題点を解決するためになされたものである。すなわ
ち、低濃度有機溶剤ガスを吸着材に通気吸着させ、小量
の加熱気体で吸着された有機溶剤を脱着し、脱着された
高濃度の有機溶剤濃縮ガスを燃焼装置で処理する低濃度
有機溶剤ガス処理に関し、吸着濃縮装置へ通気されるガ
スの濃度が設計値よりも低く変動する場合に生じるエネ
ルギー消費量の増加を防ぎ、また、燃焼装置で処理出来
る濃度の上限を越えた場合には安全に対処する機能を有
する低濃度有機溶剤ガスの処理方法及び処理装置を提供
するものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems. That is, the low-concentration organic solvent gas is adsorbed by aeration on the adsorbent, the adsorbed organic solvent is desorbed with a small amount of heated gas, and the desorbed high-concentration organic solvent concentrated gas is processed in the combustion device. Concerning gas processing, it prevents the increase in energy consumption that occurs when the concentration of gas ventilated to the adsorption concentrator fluctuates below the design value, and is safe when the upper limit of the concentration that can be processed by the combustion device is exceeded. The present invention provides a method and apparatus for treating a low-concentration organic solvent gas having a function of coping with the above.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決すること
を目的とする本発明に係る処理方法の要旨は、低濃度の
有機溶剤ガスを吸着濃縮装置の吸着体に通気吸着させガ
ス中の有機溶剤を吸着除去した後、小量の加熱気体によ
り吸着体に吸着された有機溶剤を脱着し、これにより低
濃度有機溶剤ガスから高濃度の濃縮ガスを発生させ、こ
れより取り出される濃縮ガスを燃焼装置で酸化分解する
際に、燃焼装置の処理ガス出口温度もしくは入出口温度
差を感知し、それに応じて吸着濃縮装置の脱着用気体供
給風量および燃焼装置に供給される濃縮ガス風量を調整
する機能を有する低濃度有機溶剤ガスの処理方法であ
り、前記出口温度が低い場合もしくは前記入口・出口温
度差が小さい場合には、これに応じて前記脱着用気体供
給風量および前記濃縮ガス風量を下げることによって前
記吸着濃縮装置から供給される濃縮ガス濃度を上げ、ま
た前記出口温度が高い場合もしくは前記入口・出口温度
差が大きい場合には、これに応じて前記脱着用気体供給
風量および前記濃縮ガス風量を上げることによって前記
吸着濃縮装置から供給される濃縮ガス濃度を下げる様に
調整することにある。また本発明に係る低濃度有機溶剤
ガス処理装置は、低濃度の有機溶剤を含有する被処理ガ
ス中の有機溶剤を吸着する吸着体が配設された吸着手
段、前記被処理ガスを前記吸着体に送る被処理ガス供給
手段、前記吸着体に吸着された有機溶剤を脱着するため
の脱着用気体を前記吸着体に供給する脱着用気体供給手
段、前記脱着用気体の供給風量を調整する脱着用気体風
量調整手段、脱着用気体により前記吸着体に吸着された
有機溶剤を脱着する脱着手段が設けられた吸着濃縮装置
を備え、さらには前記吸着濃縮装置から取り出される高
濃度の有機溶剤を含む濃縮ガスを燃焼酸化させる燃焼手
段、前記濃縮ガスを前記燃焼手段へ供給する濃縮ガス供
給手段、前記濃縮ガスの前記燃焼手段への供給風量を調
整する濃縮ガス風量調整手段を有する燃焼装置を備え、
前記燃焼装置の処理ガス出口温度もしくは入口・出口温
度差を検知する検知手段、及び前記燃焼装置処理ガス出
口温度もしくは入口・出口温度差の検知データーを前記
吸着濃縮装置の脱着用気体風量調整手段と前記燃焼装置
の濃縮ガス風量調整手段に伝達する伝達手段を設けたこ
とを要旨とする。更に前記吸着濃縮装置は、吸着脱着繰
り返し周期の調整手段を有することが好ましく、また前
記吸着濃縮装置は、脱着用気体を加熱する加熱手段を有
することが好ましい。加えて本発明の処理装置におい
て、前記吸着濃縮装置が、吸着体を回転移動させる吸着
体回転移動手段を有する連続回転型の装置であって、前
記吸着手段が、被処理ガスを回転移動する吸着体の吸着
部で吸着させるものであり、前記脱着手段が、回転移動
する吸着体に吸着された有機溶剤を前記脱着用気体によ
り前記吸着体の脱着部にて脱着するものであることが好
ましい。更に前記吸着濃縮装置の前記脱着用気体風量調
整手段および前記燃焼装置の前記濃縮ガス風量調整手段
が、前記脱着用気体供給手段および前記濃縮ガス供給手
段に使用されるファンのモーターに対するインバーター
制御機構であることが好ましい。The gist of the treatment method according to the present invention, which is intended to solve the above-mentioned problems, is that a low-concentration organic solvent gas is adsorbed to an adsorbent of an adsorption concentrator by aeration and adsorbed organically in the gas. After adsorbing and removing the solvent, the organic solvent adsorbed on the adsorbent is desorbed by a small amount of heated gas, thereby generating a high-concentration concentrated gas from the low-concentration organic solvent gas, and burning the concentrated gas extracted from this. A function to detect the process gas outlet temperature or inlet / outlet temperature difference of the combustion device during oxidative decomposition in the device, and adjust the desorption gas supply air amount of the adsorption concentration device and the concentration gas air amount supplied to the combustion device accordingly. When the outlet temperature is low or the inlet-outlet temperature difference is small, the desorption gas supply air flow rate and the concentrated air flow rate are correspondingly reduced. When the concentration of concentrated gas supplied from the adsorption concentration device is increased by lowering the gas air volume, and when the outlet temperature is high or the inlet-outlet temperature difference is large, the desorption gas supply air volume is correspondingly increased. And adjusting the concentration of the concentrated gas supplied from the adsorption concentration device to be lowered by increasing the flow rate of the concentrated gas. Further, the low-concentration organic solvent gas treatment apparatus according to the present invention is an adsorption means in which an adsorbent for adsorbing an organic solvent in a gas to be treated containing a low-concentration organic solvent is disposed, To-be-processed gas supply means, desorption gas supply means for supplying desorption gas for desorbing the organic solvent adsorbed on the adsorbent to the adsorbent, desorption for adjusting the supply air volume of the desorption gas A gas flow rate adjusting means, an adsorption concentration device provided with a desorption means for desorbing the organic solvent adsorbed on the adsorbent by a desorption gas, and further, a concentration containing a high-concentration organic solvent taken out from the adsorption concentration device Combustion having combustion means for burning and oxidizing gas, concentrated gas supply means for supplying the concentrated gas to the combustion means, and concentrated gas air volume adjusting means for adjusting the supply air quantity of the concentrated gas to the combustion means Equipped with a location,
The detection means for detecting the processing gas outlet temperature or the inlet / outlet temperature difference of the combustion apparatus, and the detection data of the combustion apparatus processing gas outlet temperature or the inlet / outlet temperature difference are used as desorption gas flow rate adjusting means of the adsorption concentration apparatus. The gist of the present invention is to provide a transmitting means for transmitting to the concentrated gas flow rate adjusting means of the combustion device. Further, it is preferable that the adsorption concentration device has a means for adjusting the adsorption / desorption repetition cycle, and the adsorption concentration device has a heating means for heating the desorption gas. In addition, in the treatment apparatus of the present invention, the adsorption concentration apparatus is a continuous rotation type apparatus having an adsorbent rotation moving means for rotationally moving the adsorbent, and the adsorption means is an adsorption for rotationally moving the gas to be treated. It is preferable that the adsorbing unit adsorbs the organic solvent adsorbed on the rotating moving adsorbent at the adsorbing unit of the body by the desorbing gas at the desorbing unit of the adsorbent. Further, the desorption gas air flow rate adjusting means of the adsorption concentration device and the concentrated gas air flow rate adjusting means of the combustion device are an inverter control mechanism for the desorption gas supply means and the fan motor used for the concentrated gas supply means. Preferably there is.
【０００９】[0009]
【作用】本発明に至った理由は、次の２点の特性を見い
出し、装置へ応用したものである。
吸着濃縮装置に通気される溶剤ガス濃度が低ければ、
吸着濃縮装置の脱着用気体供給風量を下げることが可能
である。
燃焼装置の処理ガス入口と出口ガス温度差は、吸着濃
縮装置入口の実質的濃度を表すものである。
以下、上記２点につき説明する。The reason why the present invention was achieved is that the following two characteristics were found and applied to an apparatus. If the concentration of solvent gas vented to the adsorption concentrator is low,
It is possible to reduce the desorption gas supply air volume of the adsorption concentration device. The temperature difference between the process gas inlet and the outlet gas of the combustor represents the substantial concentration at the inlet of the adsorption concentrator. The above two points will be described below.
【００１０】図３には、吸着濃縮装置の除去性能を一定
とした場合の被処理ガス溶剤濃度と吸着濃縮装置の脱着
用気体風量との関係が示される。被処理ガスの溶剤濃度
が低ければ、脱着用気体の風量を下げられることがわか
る。（少ない脱着用気体風量で吸着体から溶剤を脱着す
ることが出来る。）FIG. 3 shows the relationship between the concentration of the gas to be treated and the desorption gas flow rate of the adsorption concentrator when the removal performance of the adsorption concentrator is constant. It can be seen that the air volume of the desorption gas can be reduced if the solvent concentration of the gas to be treated is low. (The solvent can be desorbed from the adsorbent with a small amount of gas for desorption.)
【００１１】図４には、吸着濃縮装置に通気されるガス
濃度と、吸着濃縮装置から発生する濃縮ガスを２次処理
している触媒燃焼装置の処理ガス出口温度との関係が示
されている。触媒燃焼装置の処理入口温度を一定に保っ
た場合には、吸着濃縮装置に通気されるガス濃度が高く
なれば触媒燃焼装置の出口温度がそれに従い高くなるこ
とがわかる。すなわち、触媒燃焼装置処理ガス入出口温
度差により、吸着濃縮装置へ通気される実質的溶剤ガス
濃度を知ることが出来る。FIG. 4 shows the relationship between the concentration of the gas ventilated in the adsorption concentrator and the temperature of the treated gas outlet of the catalytic combustion device which is secondarily treating the concentrated gas generated from the adsorption concentrator. . It can be seen that when the treatment inlet temperature of the catalytic combustion device is kept constant, the outlet temperature of the catalytic combustion device rises accordingly as the concentration of gas aerated in the adsorption concentration device increases. That is, it is possible to know the substantial concentration of the solvent gas aerated to the adsorption / concentration device from the temperature difference between the inlet and outlet gas of the catalytic combustion device processing gas.
【００１２】連続回転型吸着濃縮装置とそれから発生す
る濃縮ガスの燃焼処理装置である触媒燃焼装置とを組み
合わせた低濃度有機溶剤ガス処理装置における本発明装
置の概略を示すフローの１例を図２に示す。以下本発明
の主旨を図２を用いて説明する。ファン１を介して回転
型吸着濃縮装置吸着体２の吸着部２ａに通気された低濃
度有機溶剤ガスは、吸着浄化され放出される。溶剤を吸
着した吸着材は、回転により連続的に吸着部２ａから脱
着部２ｂへ移動され、ファン３を介して熱交換器４及び
加熱器５にて加熱された小量の空気で脱着再生される。
脱着再生用の加熱空気の温度は１１ａの温度検出部と温
度調整器９ａが加熱器５を制御することにより調整され
ている。脱着部から小量の加熱空気で脱着された有機溶
剤は、濃縮ガスとしてファン６を介して熱交換器７およ
び触媒燃焼装置８に付設された加熱器８ａにて加熱され
触媒８ｂに通気される。触媒入り口ガス温度は温度検出
部１１ｂと温度調製器９ｂが加熱器８ａを制御すること
により調整される。濃縮ガスは、触媒８ｂにて濃縮ガス
中の有機溶剤が酸化分解されることにより浄化され、熱
交換器７および熱交換器４を経て排出される。１１ｃに
て検出された触媒燃焼装置の出口温度は、温度指示器９
ｃより温度指示値伝達器１０に送られる。温度指示値伝
達器１０から伝達されたデーターにより脱着用気体供給
ファン制御器１２ａがファン３即ち吸着濃縮装置の脱着
用気体供給風量をさらに濃縮ガス供給ファン制御器１２
ｂが濃縮ガスファン６即ち触媒燃焼装置の濃縮ガス供給
風量をそれぞれ調製する。本装置の作用は以下の通りで
ある。吸着濃縮装置へ供給される溶剤濃度が通常より低
い場合には、吸着濃縮装置から発生する濃縮ガスの濃度
が通常濃度より低くなるために、この濃縮ガスを処理す
る燃焼装置における酸化分解熱の発生量も通常より低く
なり、したがって燃焼装置の出口温度が通常温度より低
くなる。この通常より低い燃焼装置出口温度を受けて吸
着濃縮装置の脱着用気体風量および燃焼装置の濃縮ガス
供給風量を下げることにより、吸着濃縮装置の吸着除去
性能を維持したまま、吸着濃縮装置から発生する濃縮ガ
スの濃度を上げ、この濃縮ガスを燃焼温度まで昇温する
ために必要なエネルギーを削減することができる。ま
た、吸着濃縮装置に通常より高い濃度の溶剤ガスが供給
された場合には、濃縮ガス濃度が通常より高くなり、燃
焼装置の出口温度が通常より高くなる。さらに燃焼装置
処理上限濃度に対応する燃焼装置出口温度を越えた場合
には、これを受けて吸着濃縮装置の脱着用気体風量を上
げて、速やかに濃縮装置から発生する溶剤ガス濃度を下
げ、燃焼装置が上限濃度をこえて濃縮ガスを処理するこ
とを防ぐことが出来る。An example of a flow chart showing an outline of the apparatus of the present invention in a low-concentration organic solvent gas treatment apparatus in which a continuous rotary adsorption concentration apparatus and a catalytic combustion apparatus which is a combustion treatment apparatus of a concentrated gas generated therefrom are combined is shown in FIG. Shown in. The gist of the present invention will be described below with reference to FIG. The low-concentration organic solvent gas that has been ventilated through the fan 1 to the adsorption section 2a of the rotary adsorption / concentration device adsorbent 2 is adsorbed and purified, and is released. The adsorbent that has adsorbed the solvent is continuously moved from the adsorption section 2a to the desorption section 2b by rotation, and is desorbed and regenerated by a small amount of air heated by the heat exchanger 4 and the heater 5 via the fan 3. It
The temperature of the heated air for desorption / regeneration is adjusted by controlling the heater 5 by the temperature detector 11a and the temperature adjuster 9a. The organic solvent desorbed from the desorption section with a small amount of heated air is heated as a concentrated gas through the fan 6 by the heat exchanger 7 and the heater 8a attached to the catalyst combustion device 8 and is aerated to the catalyst 8b. . The catalyst inlet gas temperature is adjusted by the temperature detector 11b and the temperature adjuster 9b controlling the heater 8a. The concentrated gas is purified by oxidizing and decomposing the organic solvent in the concentrated gas at the catalyst 8b, and is discharged through the heat exchanger 7 and the heat exchanger 4. The outlet temperature of the catalytic combustion device detected by 11c is the temperature indicator 9
It is sent to the temperature instruction value transmitter 10 from c. Based on the data transmitted from the temperature instruction value transmitter 10, the desorption gas supply fan controller 12a further determines the desorption gas supply air volume of the fan 3, that is, the adsorption concentration device, by the concentrated gas supply fan controller 12.
b adjusts the concentrated gas fan 6, that is, the concentrated gas supply air amount of the catalytic combustion device. The operation of this device is as follows. When the concentration of the solvent supplied to the adsorption concentrator is lower than usual, the concentration of the concentrated gas generated from the adsorption concentrator becomes lower than the normal concentration, so the heat of oxidation and decomposition is generated in the combustion device that processes this concentrated gas. The amount will also be lower than normal and therefore the outlet temperature of the combustor will be lower than normal. Generated from the adsorption / concentration device while maintaining the adsorption / removal performance of the adsorption / concentration device by lowering the desorption gas air amount of the adsorption / concentration device and the concentration gas supply air amount of the combustion device in response to the combustion device outlet temperature lower than usual. It is possible to increase the concentration of the concentrated gas and reduce the energy required to raise the temperature of the concentrated gas to the combustion temperature. Further, when a solvent gas having a concentration higher than usual is supplied to the adsorption concentration device, the concentration of concentrated gas becomes higher than usual, and the outlet temperature of the combustion device becomes higher than usual. Furthermore, when the temperature exceeds the combustion device outlet temperature that corresponds to the combustion device upper limit concentration, the desorption gas flow rate of the adsorption concentration device is increased in response to this, and the concentration of solvent gas generated from the concentration device is promptly reduced to burn. It is possible to prevent the device from processing the concentrated gas beyond the upper limit concentration.
【００１３】本発明で使用される吸着濃縮装置の例とし
てハニカム構造の回転吸着体を使用した装置概要の１例
が図５に、またマット状のエンドレス構造の吸着体を使
用した装置概要の１例が図６に示される。しかしながら
これら装置の形状は本発明において特に限定されるもの
ではない。As an example of the adsorption / concentration device used in the present invention, an example of an outline of an apparatus using a honeycomb-shaped rotary adsorbent is shown in FIG. 5, and an outline of an apparatus using a mat-shaped endless structure adsorbent. An example is shown in FIG. However, the shapes of these devices are not particularly limited in the present invention.
【００１４】吸着濃縮装置の脱着用気体風量の調整手段
および燃焼装置の濃縮ガス風量の調整手段としては、図
２本発明例概略フロー図に示された、脱着用気体および
濃縮ガスを提供するそれぞれのファンの出力を調整する
ことにより実施する方法、または脱着用気体供給ライン
および燃焼装置の濃縮ガス供給ラインの途中に設置され
たダンパー開度を調整することにより実施する方法等が
ある。燃焼装置の処理ガス出口温度を検知してそれに応
じて的確かつ段階的に吸着濃縮装置の処理風量および燃
焼装置の濃縮ガス風量を調整するためには、脱着用気体
および濃縮ガスを供給するそれぞれのファンの出力を調
整する方法が望ましい。さらにファンの出力を調整する
方法としてはファンに使用されるモーターの回転速度を
インバーターにより調整することが望ましい。インバー
ターによる回転速度の調整方法としては、燃焼装置の出
口温度測定器（調整器）から出力されるアナログ電気信
号（温度の変換信号）によりインバーターの周波数出力
を調整する方法、さらには、燃焼装置の出口温度測定器
（調整器）の出力接点を複数組み合わせて、インバータ
ーへの入力接点条件を変化させることでインバーターの
周波数出力を調整する方法等がある。しかしながらこれ
らの吸着濃縮装置の脱着用気体風量調整方法および燃焼
装置の濃縮ガス風量調整方法については、本発明におい
て特に限定されるものではない。As the means for adjusting the desorption gas flow rate of the adsorption concentrator and the means for adjusting the concentration gas flow rate of the combustor, the desorption gas and the concentration gas shown in the schematic flow chart of FIG. There is a method of carrying out by adjusting the output of the fan, or a method of carrying out by adjusting the opening degree of a damper installed in the middle of the desorption gas supply line and the concentrated gas supply line of the combustion device. In order to detect the process gas outlet temperature of the combustor and adjust the process air volume of the adsorption concentrator and the concentrated gas air volume of the combustor appropriately and stepwise in accordance therewith, the desorption gas and the concentrated gas are respectively supplied. A method of adjusting the fan output is desirable. Further, as a method of adjusting the output of the fan, it is desirable to adjust the rotation speed of the motor used for the fan by an inverter. As a method of adjusting the rotation speed by the inverter, a method of adjusting the frequency output of the inverter by an analog electric signal (temperature conversion signal) output from the outlet temperature measuring device (regulator) of the combustion device, There is a method of adjusting the frequency output of the inverter by combining a plurality of output contacts of the outlet temperature measuring device (regulator) and changing the condition of the input contact to the inverter. However, the desorption gas air flow rate adjusting method for the adsorption concentrating device and the concentrated gas air flow rate adjusting method for the combustion device are not particularly limited in the present invention.
【００１５】なお、吸着濃縮装置の脱着用気体風量およ
び燃焼装置の濃縮ガス風量を調整する場合には、それと
同時に吸着濃縮装置の吸着脱着繰り返し周期（連続回転
型吸着濃縮装置においては、吸着体の回転周期）を調整
することが、よりよい効果を引き出す場合がある。When adjusting the desorption gas flow rate of the adsorption / concentration device and the concentration gas flow rate of the combustion device, at the same time, the adsorption / desorption repetition cycle of the adsorption / concentration device (in the continuous rotary adsorption / concentration device, Adjusting the rotation cycle may bring out a better effect.
【００１６】作用の１例を以下に示す。吸着濃縮装置へ
通気される被処理ガス濃度が低いためにそれから取り出
される濃縮ガスの濃度が低く、燃焼装置の出口温度（燃
焼後の排気温度）が所定温度より低い場合には、燃焼装
置の出口温度に応じて吸着濃縮装置の脱着用気体風量お
よび燃焼装置の濃縮ガス風量を下げて、吸着濃縮装置の
吸着除去性能を維持したまま濃縮ガスの温度を上げる。
このことにより濃縮ガスを燃焼装置にて酸化分解を行う
温度まで昇温させるに必要なエネルギー消費量を低減さ
せることが可能である。表１には、吸着濃縮装置に低濃
度溶剤ガスを通気し濃縮装置から取り出される濃縮ガス
を触媒燃焼装置で処理した１例が示される。本例では、
図２に示されるフローにて低濃度溶剤ガスが処理されて
いる。なお、触媒燃焼温度までの濃縮ガスの昇温には本
例においては電気ヒーターが用いられている。比較例１
は、吸着濃縮装置へ１５０ｐｐｍのキシレン−酢酸エチ
ル混合ガス（キシレン１２０ｐｐｍ、酢酸エチル３０ｐ
ｐｍ）が通気されている例である。触媒燃焼装置で溶剤
ガスが酸化分解し発生した酸化分解熱が装置に付設され
た熱交換器により熱回収されているめ、濃縮ガスを触媒
燃焼温度まで昇温するに必要な電力は０．８５ｋｗであ
る。比較例２においては、吸着濃縮装置へ設計濃度より
低い１００ｐｐｍのキシレン−酢酸エチル混合ガス（キ
シレン８０ｐｐｍ、酢酸エチル２０ｐｐｍ）が通気され
ている。吸着濃縮装置の脱着用気体風量および燃焼装置
の濃縮ガス風量はそのままにて運転されているため、触
媒燃焼装置の燃焼温度まで被処理ガスを昇温するに必要
な電力が２．０ｋｗと比較例１の２倍以上必要となる。
本実施例１では、比較例２同様、吸着濃縮装置へ設計濃
度より低い１００ｐｐｍのキシレン−酢酸エチル混合ガ
ス（キシレン８０ｐｐｍ、酢酸エチル２０ｐｐｍ）が通
気されている。しかしながら、触媒燃焼装置出口温度が
所定温度より低いことを受けて、自動的に吸着濃縮装置
の脱着用気体風量および触媒燃焼装置の濃縮ガス風量が
下がり、これにより、触媒燃焼装置で処理する濃縮ガス
風量が低下しさらに濃縮ガス濃度が上昇したため、触媒
燃焼装置の燃焼温度まで被処理ガスを昇温するに必要な
電力が０．８７ｋｗと比較例２に比べ約１／２以下に低
減されている。An example of the operation is shown below. If the concentration of the gas to be treated that is ventilated to the adsorption concentrator is low and the concentration of the concentrated gas extracted from it is low, and the outlet temperature of the combustion device (exhaust temperature after combustion) is lower than a predetermined temperature, the outlet of the combustion device The desorption gas flow rate of the adsorption concentrator and the concentrated gas flow rate of the combustion device are decreased according to the temperature, and the temperature of the concentrated gas is raised while maintaining the adsorption removal performance of the adsorption concentrator.
This makes it possible to reduce the energy consumption required to raise the temperature of the concentrated gas to the temperature at which oxidative decomposition is performed in the combustion device. Table 1 shows an example in which a low-concentration solvent gas is passed through the adsorption concentrator and the concentrated gas taken out from the concentrator is treated by the catalytic combustion device. In this example,
The low concentration solvent gas is processed in the flow shown in FIG. An electric heater is used in this example to raise the temperature of the concentrated gas up to the catalytic combustion temperature. Comparative Example 1
Is a 150 ppm xylene-ethyl acetate mixed gas (xylene 120 ppm, ethyl acetate 30 p
pm) is aerated. Since the heat of oxidative decomposition generated by the oxidative decomposition of solvent gas in the catalytic combustion device is recovered by the heat exchanger attached to the device, the electric power required to raise the concentrated gas to the catalytic combustion temperature is 0.85 kW. Is. In Comparative Example 2, 100 ppm of xylene-ethyl acetate mixed gas (xylene 80 ppm, ethyl acetate 20 ppm), which is lower than the designed concentration, was ventilated to the adsorption concentration device. Since the desorption gas air volume of the adsorption concentrator and the concentrated gas air volume of the combustion device are operated as they are, the power required to raise the gas to be treated to the combustion temperature of the catalytic combustion device is 2.0 kw and a comparative example. It is required to be twice as large as one.
In Example 1, as in Comparative Example 2, 100 ppm of xylene-ethyl acetate mixed gas (xylene 80 ppm, ethyl acetate 20 ppm) lower than the designed concentration was ventilated to the adsorption concentration device. However, in response to the catalyst combustion device outlet temperature being lower than the predetermined temperature, the desorption gas air volume of the adsorption concentrator and the concentrated gas air volume of the catalytic combustion device are automatically reduced, and as a result, the concentrated gas processed by the catalyst combustion device is reduced. Since the air volume decreased and the concentrated gas concentration increased, the electric power required to raise the gas to be processed to the combustion temperature of the catalytic combustion device was 0.87 kw, which was reduced to about 1/2 or less compared to Comparative Example 2. ..
【００１７】作用の第２例を以下に記す。通常の設計濃
度である１００ｐｐｍのトルエンガスが被処理ガスとし
て連続回転型の吸着濃縮装置へ通気されている。濃縮装
置から取り出される濃縮ガスの２次処理装置として触媒
燃焼装置が使用されており、触媒の出口温度は４５０℃
を示している。この吸着濃縮装置へ通気されている被処
理ガスのトルエン濃度が一時的に２００ｐｐｍまで上昇
したため該触媒出口温度が上昇し触媒耐熱温度である５
５０℃に近づいた。触媒出口温度が高いことを受けて吸
着濃縮装置の脱着用気体風量および燃焼装置の濃縮ガス
風量が自動的に１m3/minから２m3/minに調整された（そ
れぞれの風量が２倍になった）。これにより触媒出口温
度は急激に低下し、触媒の熱劣化による性能低下を防ぐ
ことが出来た。A second example of the operation will be described below. Toluene gas of 100 ppm which is a normal design concentration is aerated as a gas to be treated into a continuous rotary adsorption concentrator. A catalyst combustion device is used as a secondary treatment device for the concentrated gas extracted from the concentrator, and the catalyst outlet temperature is 450 ° C.
Is shown. Since the toluene concentration of the gas to be treated being ventilated to this adsorption concentrator was temporarily increased to 200 ppm, the catalyst outlet temperature was raised to reach the catalyst heat resistant temperature of 5
Approached 50 ° C. Due to the high catalyst outlet temperature, the adsorption / desorption gas flow rate of the adsorber / concentrator and the concentrated gas flow rate of the combustor were automatically adjusted from 1 m 3 / min to 2 m 3 / min. ). As a result, the catalyst outlet temperature dropped sharply, and it was possible to prevent performance deterioration due to thermal deterioration of the catalyst.
【００１８】[0018]
【表１】 [Table 1]
【図１】 連続回転型吸着濃縮装置と燃焼装置とを組み
合わせた従来の装置フローFIG. 1 Flowchart of a conventional device in which a continuous rotary adsorption concentration device and a combustion device are combined
【図２】 本発明のフローFIG. 2 Flow of the present invention
【図３】 吸着濃縮装置における吸着被処理ガス濃度と
吸着濃縮装置の脱着用気体風量との関係を表した図。FIG. 3 is a diagram showing the relationship between the concentration of an adsorbed gas to be treated in the adsorption concentration device and the amount of desorption gas of the adsorption concentration device.
【図４】 吸着濃縮装置における吸着被処理ガス濃度の
吸着濃縮装置から取り出される濃縮ガスの燃焼処理装置
出口温度との関係を表した図。FIG. 4 is a diagram showing a relationship between the concentration of an adsorbed gas to be treated in the adsorption concentrating device and the temperature of the combustion treatment device outlet of the concentrated gas taken out from the adsorption concentrating device.
【図５】 連続回転型吸着濃縮装置の例FIG. 5: Example of continuous rotary adsorption concentration device
【図６】 連続回転型吸着濃縮装置の例FIG. 6 Example of continuous rotary adsorption concentration device
１ ファン ２ 吸着体 ２ａ 吸着体吸着部 ２ｂ 吸着体脱着部 ３ ファン ４ 熱交換器 ５ 脱着用気体加熱ヒーター ６ ファン ７ 熱交換器 ８ 触媒燃焼装置 ８ａ 触媒燃焼装置用ヒーター ８ｂ 触媒 ９ 温度調節器 １０ 温度指示値伝達器 １１ 温度検知器（温度測定器） １２ａ 脱着用気体供給ファン制御器 １２ｂ 濃縮ガス供給ファン制御器 １３ 吸着体回転駆動機 1 fan 2 Adsorbent 2a Adsorbent adsorption part 2b Adsorbent desorption unit 3 fans 4 heat exchanger 5 Desorption gas heater 6 fans 7 heat exchanger 8 catalytic combustion equipment 8a Heater for catalytic combustion device 8b catalyst 9 Temperature controller 10 Temperature indicator transmitter 11 Temperature detector (temperature measuring device) 12a Desorption gas supply fan controller 12b Concentrated gas supply fan controller 13 Adsorber rotation drive
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 53/02 B01D 53/34 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) B01D 53/02 B01D 53/34
Claims (5)
吸着体に通気吸着させガス中の有機溶剤を吸着除去した
後、小量の加熱された脱着用気体により該吸着体に吸着
された有機溶剤を脱着し、この吸着脱着を繰り返し行う
ことにより低濃度有機溶剤ガスから高濃度の濃縮ガスを
取り出し、この取り出された濃縮ガスを燃焼装置で酸化
分解する際に、前記 燃焼装置の処理ガス出口温度もしくは入口・出口温
度差を感知し、前記出口温度が低い場合もしくは前記入
口・出口温度差が小さい場合には、これに応じて前記吸
着濃縮装置の脱着用気体供給風量および前記燃焼装置で
処理される濃縮ガス風量を下げることによって前記吸着
濃縮装置から供給される濃縮ガス濃度を上げ、また前記
出口温度が高い場合もしくは前記入口・出口温度差が大
きい場合には、これに応じて前記吸着濃縮装置の脱着用
気体供給風量および前記燃焼装置で処理される濃縮ガス
風量を上げることによって前記吸着濃縮装置から供給さ
れる濃縮ガス濃度を下げる様に調整することを特徴とす
る低濃度有機溶剤ガスの処理方法。1. A low-concentration organic solvent gas is adsorbed to an adsorbent of an adsorption concentrator by aeration to remove the organic solvent in the gas by adsorption, and then adsorbed to the adsorbent by a small amount of heated desorption gas. the organic solvent to desorb, removed a high concentration of enriched gas from the low-concentration organic solvent gas by repeating the suction desorption, when oxidative decomposition in the combustion apparatus the retrieved enriched gas, the process gas of the combustion apparatus scan outlet temperature or senses the inlet and outlet temperature difference, or when entering-the outlet temperature is low
If the difference between the mouth and outlet temperatures is small, the suction
Desorption gas supply air volume of the deposition and concentration device and the combustion device
The adsorption by reducing the volume of concentrated gas to be treated
Increase the concentration of concentrated gas supplied from the concentrator,
If the outlet temperature is high or the inlet / outlet temperature difference is large
If hearing is supplied is from the preconcentration device by raising the desorption gas supplied air volume and enriched gas air volume to be processed in the combustion apparatus of the adsorption concentrator according to Re this
The method for treating a low-concentration organic solvent gas, which comprises adjusting the concentration of the concentrated gas to be reduced .
中の有機溶剤を吸着する吸着体が配設された吸着手段、
前記被処理ガスを前記吸着体に送る被処理ガス供給手
段、前記吸着体に吸着された有機溶剤を脱着するための
脱着用気体を前記吸着体に供給する脱着用気体供給手
段、前記脱着用気体の供給風量を調整する脱着用気体風
量調整手段、脱着用気体により前記吸着体に吸着された
有機溶剤を脱着する脱着手段が設けられた吸着濃縮装置
を備え、 さらには前記吸着濃縮装置から取り出される高濃度の有
機溶剤を含む濃縮ガスを燃焼酸化させる燃焼手段、前記
濃縮ガスを前記燃焼手段へ供給する濃縮ガス供給手段、
前記濃縮ガスの前記燃焼手段への供給風量を調整する濃
縮ガス風量調整手段を有する燃焼装置を備え、前記 燃焼装置の処理ガス出口温度もしくは入口・出口温
度差を検知する検知手段、及び前記燃焼装置処理ガス出
口温度もしくは入口・出口温度差の検知データーを前記
吸着濃縮装置の脱着用気体風量調整手段と前記燃焼装置
の濃縮ガス風量調整手段に伝達する伝達手段を設けたこ
とを特徴とする低濃度有機溶剤ガス処理装置。2. A gas to be treated containing a low concentration of organic solvent.
Adsorption means provided with an adsorbent for adsorbing the organic solvent therein,
Treated gas supply means for feeding the gas to be treated to the adsorbent, the desorption gas supply means for supplying to said adsorbent desorption gas for desorbing organic solvent adsorbed in the adsorbent, the desorption gas Adsorption concentrator provided with desorption gas flow rate adjusting means for adjusting the supply air volume and desorption means for desorbing the organic solvent adsorbed on the adsorbent by the desorption gas
The provided, combustion means for further burning oxidizing concentrated gas containing a high concentration organic solvent taken from the preconcentration device, wherein
Enriched gas supply means for supplying enriched gas to said combustion means,
Wherein comprising a combustion apparatus having a concentrated gas air volume adjusting means for adjusting the supply amount of air to said combustion means enriched gas, detection means for detecting a process gas outlet temperature or inlet and outlet temperature difference of the combustion device, and the combustion provided transmitting means for transmitting the detection data of the equipment process gas exits <br/> port temperature or the inlet and outlet temperature difference enriched gas air volume adjusting means of the combustion apparatus and desorption gas air volume adjusting means of the suction concentrator This
And a low-concentration organic solvent gas treatment device.
周期の調整手段を有する請求項２に記載の低濃度有機溶The low-concentration organic solvent according to claim 2, which has a cycle adjusting means.
剤ガス処理装置。Agent gas treatment equipment.
させる吸着体回転移動手段を有する連続回転型の装置で
あって、前記吸着手段が、被処理ガスを回転移動する吸
着体の吸着部で吸着させるものであり、前記脱着手段
が、回転移動する吸着体に吸着された有機溶剤を前記脱
着用気体により前記吸着体の脱着部にて脱着するもので
ある請求項２または３に記載の低濃度有機溶剤ガス処理
装置。 4. The continuous adsorption type apparatus having an adsorbent rotation moving means for rotating the adsorbent.
There, the said suction means, which is adsorbed by the adsorbing portion of the adsorbent for rotational movement of the gas to be treated, said desorbing means
But the organic solvent adsorbed in the adsorbent of rotational movement in which desorbed at desorption portion of the adsorbent by the desorbed gas
Low-concentration organic solvent gas processing device according to one claim 2 or 3.
調整手段および前記燃焼装置の前記濃縮ガス風量調整手
段が、前記脱着用気体供給手段および前記濃縮ガス供給
手段に使用されるファンのモーターに対するインバータ
ー制御機構である請求項２〜４のいずれかに記載の低濃
度有機溶剤ガスの処理装置。Wherein said desorption gas air volume of the adsorption concentrator
Wherein enriched gas air volume adjustment hand adjusting means and the combustion apparatus
Stage, the low-concentration organic solvent gas according to claim 2 is an inverter <br/>-controlled mechanism for a motor of a fan used in the desorption gas supply unit and the concentrated gas supply means Processing equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15713196A JP3363030B2 (en) | 1996-06-18 | 1996-06-18 | Low-concentration organic solvent gas processing apparatus and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15713196A JP3363030B2 (en) | 1996-06-18 | 1996-06-18 | Low-concentration organic solvent gas processing apparatus and processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10330A JPH10330A (en) | 1998-01-06 |
| JP3363030B2 true JP3363030B2 (en) | 2003-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15713196A Expired - Lifetime JP3363030B2 (en) | 1996-06-18 | 1996-06-18 | Low-concentration organic solvent gas processing apparatus and processing method |
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|---|---|---|---|---|
| US4829251A (en) * | 1983-08-31 | 1989-05-09 | Helmut Fischer | Electromagnetic probe for measuring the thickness of thin coatings on magnetic substrates |
| KR20020084932A (en) * | 2001-05-03 | 2002-11-16 | 주식회사 엔피아 | Air pollution control system through concentration |
| JP2010032178A (en) * | 2008-07-31 | 2010-02-12 | Toyobo Co Ltd | Organic solvent containing gas treatment system |
| JP2011072896A (en) * | 2009-09-30 | 2011-04-14 | Toyobo Co Ltd | System for treating gas containing organic solvent |
| WO2014034743A1 (en) * | 2012-08-29 | 2014-03-06 | 新東工業株式会社 | Exhaust gas purification facility and method for controlling operation of same |
| JP6167685B2 (en) * | 2013-06-17 | 2017-07-26 | 東洋紡株式会社 | Wastewater treatment system |
| CN108854446B (en) * | 2018-08-08 | 2024-05-28 | 浙江省环境工程有限公司 | System for zeolite runner adsorption-catalytic combustion handles organic waste gas |
| EP4458453A1 (en) | 2021-12-27 | 2024-11-06 | TOYOBO MC Corporation | Gas treatment system and gas treatment method |
| JP2023132048A (en) * | 2022-03-10 | 2023-09-22 | 三浦工業株式会社 | Filtration device regeneration system |
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