JPH074507B2 - Method of treating waste liquid in exhaust gas treatment equipment - Google Patents
Method of treating waste liquid in exhaust gas treatment equipmentInfo
- Publication number
- JPH074507B2 JPH074507B2 JP62250643A JP25064387A JPH074507B2 JP H074507 B2 JPH074507 B2 JP H074507B2 JP 62250643 A JP62250643 A JP 62250643A JP 25064387 A JP25064387 A JP 25064387A JP H074507 B2 JPH074507 B2 JP H074507B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- waste liquid
- air heater
- dust collector
- dry dust
- 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 - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims description 30
- 239000002699 waste material Substances 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 19
- 239000000428 dust Substances 0.000 claims description 39
- 239000007787 solid Substances 0.000 claims description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 230000008021 deposition Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000004071 soot Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 75
- 239000000203 mixture Substances 0.000 description 8
- 239000007921 spray Substances 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 6
- 229910052602 gypsum Inorganic materials 0.000 description 6
- 239000010440 gypsum Substances 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は排液を排ガス中に注入し蒸発乾燥させ、乾燥固
形物を乾式集じん装置で捕集する排ガス処理装置の排液
の処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a method for treating waste liquid in an exhaust gas treatment device, in which the waste liquid is injected into the exhaust gas, evaporated and dried, and the dry solid matter is collected by a dry dust collector. Regarding
従来、湿式排ガス処理装置の排液を乾式集じん装置上流
に噴霧する場合、エアーヒータ出口排ガスに噴霧し、そ
の蒸発乾燥固形物は下流の乾式集じん装置で捕集してい
た。（たとえば、特開昭56−155617号公報、特開昭60−
41529号公報、特開昭61−181519号公報参照） 〔発明が解決しようとする問題点〕 上述のように従来の方法ではエアーヒータ出口排ガス中
に排液を噴霧していたがエアーヒータ出口排ガスは、通
常130〜150℃程度であり、その熱で排水を蒸発乾燥する
には、次のような問題点があった。Conventionally, when the waste liquid of the wet exhaust gas treatment apparatus is sprayed upstream of the dry dust collector, it is sprayed on the exhaust gas from the outlet of the air heater, and the evaporated dry solid matter is collected by the dry dust collector downstream. (For example, JP-A-56-155617 and JP-A-60-
(Refer to Japanese Patent Laid-Open No. 41529 and Japanese Patent Laid-Open No. 61-181519) [Problems to be Solved by the Invention] As described above, in the conventional method, the exhaust liquid was sprayed into the exhaust gas from the air heater outlet, but the exhaust gas from the air heater outlet was sprayed. Is usually about 130 to 150 ° C, and there are the following problems in evaporating and drying the wastewater by the heat.
（１）排ガス温度が130〜150℃程度では、未乾燥固形物
が煙道に付着堆積する。(1) When the exhaust gas temperature is about 130 to 150 ° C, undried solid matter adheres to and accumulates on the flue.
（２）排ガス温度が130〜150℃程度では、排水を蒸発乾
燥するために、必要な煙道は30mと長い距離を必要とす
る。(2) When the exhaust gas temperature is around 130 to 150 ° C, the flue required for evaporating and drying the wastewater requires a long distance of 30 m.
（３）排液の蒸発乾燥のために、排ガス温度が10℃程度
下がり、その結果、煙突入口排ガス温度が５〜10℃低下
する。(3) Due to the evaporation and drying of the waste liquid, the exhaust gas temperature is lowered by about 10 ° C, and as a result, the chimney inlet exhaust gas temperature is lowered by 5 to 10 ° C.
本発明はかゝる現状に鑑みなされたもので、排液の未乾
燥固形物の完全乾燥を主眼とし、それにより煙道内付着
物の堆積を減少させ、蒸発乾燥に必要な煙道長さを短縮
させ、かつ排ガスの排液注入によって生ずる排ガスの煙
突入口温度の低下を抑えることができる排ガス処理装置
における排液の処理方法を提供することを目的とするも
のである。The present invention has been made in view of such a current situation, and its main purpose is to completely dry the undried solids in the waste liquid, thereby reducing the accumulation of deposits in the flue and shortening the flue length required for evaporative drying. It is an object of the present invention to provide a method for treating waste liquid in an exhaust gas treating apparatus, which is capable of suppressing a decrease in the temperature at the chimney inlet of the exhaust gas caused by injecting the waste liquid of the exhaust gas.
本発明はボイラー排ガスをエアーヒータを通して空気と
熱交換した後乾式集じん装置に導き排ガス中に含まれて
いるばいじんを除去した上で湿式排ガス処理装置に導入
し排ガスを浄化し前記湿式排ガス処理装置からの排液を
前記エアーヒータの下流で前記乾式集じん装置の上流に
注入してこの乾燥固形物を前記乾式集じん装置で捕集す
る排液の処理方法において、前記エアーヒータ上流の高
温排ガスの１部を前記エアーヒータをバイパスさせ前記
エアーヒータ下流で前記乾式集じん装置の上流の煙道で
排液注入部より下流の未乾燥固形物堆積個所近傍に導入
することを特徴とする排ガス処理装置における排液の処
理方法を提案するものである。The present invention is that the boiler exhaust gas is heat-exchanged with air through an air heater and then introduced into a dry dust collector to remove soot and dust contained in the exhaust gas, and then introduced into a wet exhaust gas treatment apparatus to purify the exhaust gas to remove the wet exhaust gas treatment apparatus. In the method for treating waste liquid, in which the waste liquid from the air heater is injected downstream of the air heater and upstream of the dry dust collector to collect the dried solid matter by the dry dust collector, a high temperature exhaust gas upstream of the air heater Part of the above is introduced into the flue upstream of the dry dust collector downstream of the air heater in the vicinity of the undried solid matter depositing point downstream of the waste liquid injecting unit by bypassing the air heater. This is to propose a method for treating waste liquid in the device.
エアーヒータ上流の排ガス（高温排ガス、約350℃）の
１部たとえば５％程度を、エアーヒータ下流で乾式集じ
ん装置の上流でかつ排液注入部の下流の煙道で、未乾燥
固形物が煙道に堆積する個所の近傍に導き、残存する排
液の未乾燥固形物を高温排ガスと接触させ加熱して完全
乾燥することにより、煙道内付着物を減少させる。又、
高温排ガスを導くので、蒸発乾燥に必要な煙道長さを短
く出来て、さらに排水の蒸発により排ガス温度が低下す
る分だけ、高温排ガスを導くので、煙突入口排ガス温度
は排液注入前と比較して低下しない。A part of the exhaust gas (high temperature exhaust gas, about 350 ° C.) upstream of the air heater, for example, about 5%, is collected in the flue upstream of the dry dust collector downstream of the air heater and downstream of the drainage injection unit by the undried solid matter. The flue deposits are reduced by bringing the undried solids of the remaining effluent into contact with the hot exhaust gas and heating them to completely dry them by leading them to the vicinity of the area where they accumulate in the flue. or,
Since high-temperature exhaust gas is introduced, the flue length required for evaporative drying can be shortened, and high-temperature exhaust gas is introduced as much as the exhaust gas temperature decreases due to evaporation of wastewater. Does not fall.
第１図及び第２図により本発明の１実施例の排ガス処理
装置における排液の処理方法について説明する。A method of treating waste liquid in the exhaust gas treating apparatus according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
第１図は本発明の１実施例の排ガス処理装置における排
液の処理工程図、第２図は上記実施例の要部拡大図であ
る。FIG. 1 is a process drawing of waste liquid in an exhaust gas treating apparatus of one embodiment of the present invention, and FIG. 2 is an enlarged view of a main part of the above embodiment.
第１図においてボイラ１から排出された排ガス２は脱硝
装置３において排ガス２中の窒素酸化物が除去される。
窒素酸化物が除去された排ガス４はエアーヒータ５に導
かれ１部はエアーヒータ５の上流で分岐してダンパ19に
より流量が調整され、エアーヒータ５の下流で乾式集じ
ん器８の上流の煙道で、第２図に示すように排液噴霧ノ
ズル20の取付部で注液22の注入部より下流の未乾燥固形
物堆積個所近傍に、開口したバイパス管路18により煙道
内に導入される。排液22は排液噴霧ノズル20に供給され
噴霧用加圧エアー23によって噴霧され液滴24となる。液
滴24はエアーヒータ出口排ガス６から熱を奪い蒸発し大
部分は乾燥するが残存する未乾燥固形物25はバイパス管
路18から導入された高温排ガスと接触し急速な加熱が行
なわれ完全に乾燥される。このようにして煙道内の付着
堆積物は殆どなくなる。また、従来の方法に比べ蒸発が
速かに行なわれるので蒸発に必要な煙道の長さも短かく
なる。高温排ガスは排液が噴霧された後の低温のエアー
ヒータ出口排ガス６と混合して排ガス21となり、乾式集
じん器８に導かればいじんが除去される。このように従
来の方法とは異なり高温排ガスが混合されるので排ガス
の煙突入口温度もそれによって上昇する。乾式集じん器
８により除去されたばいじんは、排出路９を経て灰10と
して排出される。乾式集じん器８から排出される排ガス
11は湿式排ガス処理装置12に導かれ排ガス中のSO2及び
ばいじんを除去され、その排ガス15は、煙突16より排出
される。湿式排ガス処理装置では、排ガス中より吸収し
たSO2により石膏が形成され、石膏排出路13を経て、石
膏14として回収される。In the exhaust gas 2 discharged from the boiler 1 in FIG. 1, nitrogen oxides in the exhaust gas 2 are removed in the denitration device 3.
The exhaust gas 4 from which the nitrogen oxides have been removed is guided to the air heater 5, and a part of the exhaust gas 4 branches upstream of the air heater 5 and the flow rate is adjusted by a damper 19, and downstream of the air heater 5 upstream of the dry dust collector 8. In the flue, as shown in FIG. 2, it is introduced into the flue by an open bypass pipe line 18 near the undried solid matter accumulation point downstream of the injection part of the liquid injection 22 at the attachment part of the drainage spray nozzle 20. It The drainage 22 is supplied to the drainage spray nozzle 20 and atomized by the pressurized air 23 for atomization to form droplets 24. The liquid droplets 24 take heat from the exhaust gas 6 from the air heater and evaporate and are mostly dried, but the remaining undried solid matter 25 comes into contact with the high-temperature exhaust gas introduced from the bypass pipe 18 and is rapidly heated to be completely heated. To be dried. In this way, almost no deposits are deposited in the flue. Further, since the evaporation is performed faster than in the conventional method, the length of the flue required for the evaporation becomes shorter. The high-temperature exhaust gas is mixed with the low-temperature air heater outlet exhaust gas 6 after the waste liquid is sprayed to form the exhaust gas 21, which is guided to the dry dust collector 8 to remove dust. In this way, unlike the conventional method, the hot exhaust gas is mixed, so that the chimney inlet temperature of the exhaust gas also rises. The dust removed by the dry dust collector 8 is discharged as ash 10 via the discharge passage 9. Exhaust gas discharged from the dry dust collector 8
The exhaust gas 11 is guided to the wet exhaust gas treatment device 12 to remove SO 2 and dust in the exhaust gas, and the exhaust gas 15 is discharged from the chimney 16. In the wet type exhaust gas treatment apparatus, gypsum is formed by SO 2 absorbed from the exhaust gas, and is recovered as gypsum 14 via the gypsum discharge path 13.
石炭焚排ガス4,000Nm3/hを処理する第１図及び第２図に
示す態様のパイロットプラントにより本発明の方法の効
果の確認を実施した。ボイラ１より出た排ガス２は、脱
硝装置３に導かれる。脱硝装置３の出口排ガス４の組成
は、第１表に示す通りである。The effect of the method of the present invention was confirmed by the pilot plant of the embodiment shown in FIGS. 1 and 2 which treats 4,000 Nm 3 / h of coal burning exhaust gas. The exhaust gas 2 emitted from the boiler 1 is guided to the denitration device 3. The composition of the outlet exhaust gas 4 of the denitration device 3 is as shown in Table 1.
排ガス４の５％に相当する200Nm3/hの排ガスをダンパ19
を介してエアーヒータ５下流で乾式集じん器８の上流の
煙道で、第２図に示すように排液噴霧ノズル20の取付部
より下流で未乾燥固形物堆積個所近傍に開口したバイパ
ス管18によりエアーヒータ出口排ガス６中に導入する。 Damper of 200 Nm 3 / h of exhaust gas equivalent to 5% of exhaust gas 4
A bypass pipe that is open downstream of the air heater 5 and upstream of the dry dust collector 8 and downstream of the attachment portion of the drainage spray nozzle 20 in the vicinity of the undried solid matter deposition location, as shown in FIG. It is introduced into the exhaust gas 6 at the outlet of the air heater by 18.
湿式排ガス処理装置12から排水ライン17を通って送られ
た排液22の25l/hを排液噴霧ノズル20に導き、噴霧用加
圧エアー23によりエアーヒータ出口排ガス６中に噴霧す
ると排液22は液滴24となりその大部分が乾燥されるが、
残存する未乾燥固形物25はバイパス管18を介して導入さ
れた高温排ガスと接触し加熱され蒸発が急速に進み完全
乾燥する。排液22の組成を第２表に示す。またエアーヒ
ータ出口排ガス６の性状を第３表に示す。When 25 l / h of the waste liquid 22 sent from the wet exhaust gas treatment device 12 through the drain line 17 is guided to the waste liquid spray nozzle 20, and sprayed into the air heater outlet exhaust gas 6 by the spraying pressurized air 23, the waste liquid 22 Becomes droplets 24 and most of them are dried,
The remaining undried solid matter 25 comes into contact with the high temperature exhaust gas introduced through the bypass pipe 18 and is heated to evaporate rapidly to be completely dried. The composition of drainage 22 is shown in Table 2. The properties of the exhaust gas 6 from the air heater outlet are shown in Table 3.
未乾燥固形物25が完全乾燥された後の乾式集じん器８入
口排ガス21の組成を第４表に示す。 Table 4 shows the composition of the exhaust gas 21 at the inlet of the dry dust collector 8 after the undried solid matter 25 is completely dried.
乾式集じん器８において、ばいじんを98.4％除去した。
乾式集じん器８出口排ガス11は、200mg/Nm3のばいじん
濃度であった。乾式集じん器８により除去されたばいじ
んは排出路９を経て灰10として排出される。排液噴霧ノ
ズル20より乾式集じん器８までの煙道長さは20mであっ
て未乾燥固形物は殆ど完全に乾燥され煙道への付着物の
堆積は、１カ月間連続運転を実施したところ1mm以下で
あった。 In the dry dust collector 8, 98.4% of dust was removed.
The exhaust gas 11 at the outlet of the dry dust collector 8 had a dust concentration of 200 mg / Nm 3 . The dust removed by the dry dust collector 8 is discharged as ash 10 through the discharge passage 9. The flue length from the drainage spray nozzle 20 to the dry dust collector 8 was 20 m, the undried solids were almost completely dried, and the accumulation of deposits on the flue was carried out for one month after continuous operation. It was 1 mm or less.
（２）比較例 第３図及び第４図に示す態様のパイロットプラントによ
り従来法を実施し、本発明の方法との比較を行なった。
その結果について以下説明する。脱硝装置３の出口排ガ
ス４の組成は、第１表に示す通り本発明の方法の場合と
同様である。エアーヒータ出口排ガス６の組成を第５表
に示す。(2) Comparative Example The conventional method was carried out by the pilot plant shown in FIGS. 3 and 4, and the method of the present invention was compared.
The results will be described below. The composition of the exhaust gas 4 at the outlet of the denitration device 3 is the same as in the case of the method of the present invention as shown in Table 1. Table 5 shows the composition of the exhaust gas 6 from the air heater outlet.
湿式排ガス処理装置12より排水ライン17を通って送られ
た排液22を25l/h、エアーヒータ５と乾式集じん器８の
間の煙道のエアーヒータ出口排ガス６中に２流体ノズル
26により噴霧した。２流体ノズル26では、排液22が噴霧
用加圧エアー（6kg/cm2Ｇ）23により噴霧され、微細噴
霧液滴24が生成される。噴霧液滴24は、温度が通常150
℃〜130℃程度のエアーヒータ出口排ガス６により蒸発
乾燥される。排液組成は、第２表に示した本発明の方法
の場合と同様である、噴霧後の排ガス７の組成を第６表
に示す。 The waste liquid 22 sent from the wet type exhaust gas treatment device 12 through the drain line 17 is 25 l / h, the two-fluid nozzle in the air heater outlet exhaust gas 6 of the flue between the air heater 5 and the dry dust collector 8.
Sprayed with 26. In the two-fluid nozzle 26, the waste liquid 22 is atomized by the pressurized air for atomization (6 kg / cm 2 G) 23, and fine atomized droplets 24 are generated. The temperature of the spray droplet 24 is usually 150.
Evaporated and dried by the exhaust gas 6 from the air heater outlet of about ℃ to 130 ℃. The effluent composition is the same as that of the method of the present invention shown in Table 2, and Table 6 shows the composition of the exhaust gas 7 after spraying.
乾式集じん器８において、ばいじんを98.3％除去した。
乾式集じん器出口の排ガス11は、200mg/Nm3のばいじん
濃度であった。乾式集じん器８により、除去されたばい
じんは、排出路９を経て灰10として排出される。排ガス
11の温度は、138℃で本発明の方法の場合より10℃低
く、その他の組成は、本発明の方法の場合と同様であ
る。排ガス11は、湿式排ガス処理装置12に導かれ、排ガ
ス中のSO2を除去し、その排ガス15は煙突16より排出さ
れる。湿式排ガス処理装置12では、排ガス中より吸収し
たSO2により石膏が生成され、石膏排出路13を経て石膏1
4として回収される。２流体ノズル26より乾式集じん器
８までの煙道長さは30mである。煙道への付着物の堆積
は、１カ月間連続運転を実施した結果、６〜7mm程度で
あった。 In the dry dust collector 8, 98.3% of dust was removed.
The exhaust gas 11 at the outlet of the dry dust collector had a dust concentration of 200 mg / Nm 3 . The soot and dust removed by the dry dust collector 8 is discharged as ash 10 through the discharge passage 9. Exhaust gas
The temperature of 11 is 138 ° C., which is 10 ° C. lower than in the method of the present invention, and the other compositions are the same as in the method of the present invention. The exhaust gas 11 is guided to the wet exhaust gas treatment device 12 to remove SO 2 in the exhaust gas, and the exhaust gas 15 is discharged from the chimney 16. In the wet type exhaust gas treatment device 12, gypsum is generated by SO 2 absorbed from the exhaust gas, and the gypsum 1 passes through the gypsum discharge passage 13.
Recovered as 4. The flue length from the two-fluid nozzle 26 to the dry dust collector 8 is 30 m. Accumulation of deposits on the flue was about 6 to 7 mm as a result of continuous operation for one month.
以上述べたように、本発明の方法の場合は、煙道への付
着物の堆積は従来の方法の場合に比べ極端に少なく、排
水の蒸発乾燥に要する煙突の長さも従来の30mに比べ20m
と10mも短かく、排液噴霧後の排ガ温度も10℃程度高
い。As described above, in the case of the method of the present invention, the deposition of deposits on the flue is extremely less than in the case of the conventional method, and the length of the chimney required for evaporative drying of the waste water is 20 m compared to the conventional 30 m.
It is as short as 10 m, and the exhaust gas temperature after spraying the drainage liquid is about 10 ° C higher.
本発明の方法によれば次の効果を奏する。 The method of the present invention has the following effects.
（１）高温排ガスの導入により未乾燥固形物が完全乾燥
されるので煙道に付着堆積することが抑制され、たとえ
ば従来の方法であれば年間100mm程度堆積するのを10mm
以下と従来の1/10以下に抑えることができる。(1) Since the undried solid matter is completely dried by the introduction of high-temperature exhaust gas, adhesion and deposition on the flue is suppressed.
It can be reduced to less than 1/10 of the conventional value.
（２）高温排ガスを混合し排ガス温度を上昇することに
より、排液を蒸発乾燥するために必要な煙道の長さを短
くでき、従来の方法であれば通常30m程度必要なのを20m
程度と10m程度短くできる。(2) By mixing hot exhaust gas and raising the exhaust gas temperature, the length of the flue required to evaporate and dry the waste liquid can be shortened. With the conventional method, it is usually about 30 m but 20 m
It can be shortened by about 10m.
【図面の簡単な説明】 第１図は本発明の１実施例の排ガス処理装置における排
液の処理工程図、第２図は上記実施例の要部拡大図、第
３図は従来の排ガス処理装置における排液の処理工程
図、第４図は従来法の２流体ノズルの説明図である。 １…ボイラ、３…脱硝装置 ５…エアーヒータ、８…乾式集じん器 12…湿式排ガス処理装置 16…煙突、18…バイパス管路 19…ダンパ、20…排液噴霧ノズル 22…排液、23…噴霧用加圧エアー 25…未乾燥固形物、26…従来法２流体ノズルBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram of a discharged liquid in an exhaust gas treating apparatus according to an embodiment of the present invention, FIG. 2 is an enlarged view of a main part of the above embodiment, and FIG. 3 is a conventional exhaust gas treating process. FIG. 4 is an explanatory view of a conventional two-fluid nozzle, and FIG. 1 ... Boiler, 3 ... Denitration device 5 ... Air heater, 8 ... Dry dust collector 12 ... Wet exhaust gas treatment device 16 ... Chimney, 18 ... Bypass line 19 ... Damper, 20 ... Drainage spray nozzle 22 ... Drainage, 23 ... pressurized air for spraying 25 ... undried solid matter, 26 ... conventional two-fluid nozzle
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 53/34 ＺＡＢ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B01D 53/34 ZAB
Claims (1)
気と熱交換した後乾式集じん装置に導き排ガス中に含ま
れているばいじんを除去した上で湿式排ガス処理装置に
導入し排ガスを浄化し前記湿式排ガス処理装置からの排
液を前記エアーヒータの下流で前記乾式集じん装置の上
流に注入してこの乾燥固形物を前記乾式集じん装置で捕
集する排液の処理方法において、前記エアーヒータ上流
の高温排ガスの１部を前記エアーヒータをバイパスさせ
前記エアヒータ下流で前記乾式集じん装置の上流の煙道
で排液注入部より下流の未乾燥固形物堆積個所近傍に導
入することを特徴とする排ガス処理装置における排液の
処理方法。1. Boiler exhaust gas is heat-exchanged with air through an air heater and then introduced into a dry dust collector to remove soot and dust contained in the exhaust gas, and then introduced into a wet exhaust gas treatment device to purify the exhaust gas to obtain the wet exhaust gas. In the method of treating waste liquid, in which the waste liquid from the treatment device is injected downstream of the air heater and upstream of the dry dust collector to collect the dried solid matter by the dry dust collector, Part of high-temperature exhaust gas is bypassed to the air heater, and is introduced into the vicinity of the undried solid matter deposition location downstream of the waste liquid injection part in the flue upstream of the dry dust collector downstream of the air heater. A method for treating waste liquid in a treatment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62250643A JPH074507B2 (en) | 1987-10-06 | 1987-10-06 | Method of treating waste liquid in exhaust gas treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62250643A JPH074507B2 (en) | 1987-10-06 | 1987-10-06 | Method of treating waste liquid in exhaust gas treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0194923A JPH0194923A (en) | 1989-04-13 |
| JPH074507B2 true JPH074507B2 (en) | 1995-01-25 |
Family
ID=17210910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62250643A Expired - Fee Related JPH074507B2 (en) | 1987-10-06 | 1987-10-06 | Method of treating waste liquid in exhaust gas treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074507B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2540379A4 (en) * | 2010-02-25 | 2014-12-10 | Mitsubishi Heavy Ind Ltd | EXHAUST GAS TREATMENT SYSTEM, AND EXHAUST GAS TREATMENT METHOD |
-
1987
- 1987-10-06 JP JP62250643A patent/JPH074507B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2540379A4 (en) * | 2010-02-25 | 2014-12-10 | Mitsubishi Heavy Ind Ltd | EXHAUST GAS TREATMENT SYSTEM, AND EXHAUST GAS TREATMENT METHOD |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0194923A (en) | 1989-04-13 |
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