JPH0722648B2 - Separator for organic solvent in gas - Google Patents
Separator for organic solvent in gasInfo
- Publication number
- JPH0722648B2 JPH0722648B2 JP62270347A JP27034787A JPH0722648B2 JP H0722648 B2 JPH0722648 B2 JP H0722648B2 JP 62270347 A JP62270347 A JP 62270347A JP 27034787 A JP27034787 A JP 27034787A JP H0722648 B2 JPH0722648 B2 JP H0722648B2
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- Japan
- Prior art keywords
- organic solvent
- gas
- tank
- processing tank
- refrigerant
- Prior art date
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、有機溶剤を含む気体、例えば工場の洗浄槽の
排ガスから有機溶剤を分離する分離装置に関するもので
ある。TECHNICAL FIELD The present invention relates to a separator for separating an organic solvent from a gas containing an organic solvent, for example, exhaust gas from a cleaning tank of a factory.
〔従来の技術〕 従来における気体中の有機溶剤の分離装置は、例えば、
有機溶剤を含む溶剤混合ガスを吸引して冷却器付きサイ
クロンに導き、溶剤混合ガスを冷却ジャケットで間接的
に冷却して凝結、又は凝固させ、有機溶剤と気体を分離
するようにしている。[Prior Art] A conventional device for separating an organic solvent in a gas is, for example,
A solvent mixed gas containing an organic solvent is sucked and introduced into a cyclone with a cooler, and the solvent mixed gas is indirectly cooled by a cooling jacket to be condensed or solidified to separate the organic solvent and the gas.
従来における気体中の有機溶剤の分離装置は、以上のよ
うに構成され、溶剤混合ガスを冷却ジャケットで間接的
に冷却して凝結、又は凝固させていたので、大きな冷却
効果を得ることができず、冷却効率が極めて悪いという
問題点があった。The conventional apparatus for separating organic solvent in gas is configured as described above, and since the solvent mixed gas is indirectly cooled by the cooling jacket to be condensed or solidified, a large cooling effect cannot be obtained. However, there was a problem that the cooling efficiency was extremely poor.
本発明は、上述の従来の問題点を解決しようとするもの
で、有機溶剤を含む気体を凝固点以下まで瞬時に冷却す
ることができ、しかも、有機溶剤を変質させずに効率良
く回収することが可能な気体中の有機溶剤の分離装置を
提供することを目的とするものである。The present invention is intended to solve the above-mentioned conventional problems, and it is possible to instantly cool a gas containing an organic solvent to a temperature below the freezing point, and moreover, it is possible to efficiently recover the organic solvent without degrading it. It is an object of the present invention to provide a device for separating an organic solvent in a possible gas.
本発明においては、上述の目的を達成するため、一方端
に入口開口を、他方端に出口開口を、中央部に液化冷媒
ガス噴出装置を設けた処理槽の内部に多数の連通孔を備
えた隔壁を前記入口開口と液化冷媒ガス噴出装置との間
に垂設し、この処理槽を有機溶剤ガス導出配管の中途に
連結して処理槽内で有機溶剤を含む気体を凝固点以下に
冷却し、有機溶剤ガスおよび水分を凝固して回収するよ
うにしている。In the present invention, in order to achieve the above-mentioned object, an inlet opening is provided at one end, an outlet opening is provided at the other end, and a large number of communication holes are provided inside a processing tank provided with a liquefied refrigerant gas injection device in the center. A partition wall is provided vertically between the inlet opening and the liquefied refrigerant gas ejection device, and the treatment tank is connected to the middle of the organic solvent gas discharge pipe to cool the gas containing the organic solvent to below the freezing point in the treatment tank, The organic solvent gas and water are coagulated and collected.
上記構成による本発明で有機溶剤を分離する場合には、
有機溶剤を含む気体が処理槽内に導入されるとともに、
液化冷媒が処理槽内に噴出供給される。すると、液化冷
媒が瞬時に減圧されて気化し、液化冷媒が有機溶剤の凝
固点より著しく低温の冷媒ガスとなって処理槽内の有機
溶剤ガスを含む気体を有機溶剤の凝固点より低温にまで
冷却するので、処理槽内の有機溶剤ガスと水蒸気が凝固
し、有機溶剤ガスと分離した空気及び冷媒ガスは、処理
槽の出口開口から外部に排出される。この場合、冷媒と
して炭酸、窒素等のようなそのまま大気中に放出してあ
まり害がないものを用いていれば、そのまま大気中に排
出することができる。なお、処理槽内の凝固した溶剤お
よび水分は排出口から分離槽に導出される。また、処理
槽内には、多数の連通孔を備えた隔壁が設けられている
ので、有機溶剤を含む気体が冷却されずに排出されるの
を確実に防止することができる。When separating the organic solvent in the present invention having the above-mentioned structure,
A gas containing an organic solvent is introduced into the processing tank,
The liquefied refrigerant is jetted and supplied into the processing tank. Then, the liquefied refrigerant is instantly depressurized and vaporized, and the liquefied refrigerant becomes a refrigerant gas whose temperature is significantly lower than the freezing point of the organic solvent, and cools the gas containing the organic solvent gas in the processing tank to a temperature lower than the freezing point of the organic solvent. Therefore, the organic solvent gas and the water vapor in the processing tank are solidified, and the air and the refrigerant gas separated from the organic solvent gas are discharged to the outside from the outlet opening of the processing tank. In this case, if a refrigerant, such as carbonic acid or nitrogen, which is released into the atmosphere as it is and is not so harmful, can be discharged into the atmosphere as it is. The solidified solvent and water in the processing tank are led out to the separation tank from the outlet. Further, since the partition wall having a large number of communication holes is provided in the processing tank, it is possible to reliably prevent the gas containing the organic solvent from being discharged without being cooled.
なお、分離槽では加熱されて水と有機溶剤液になるが、
両者は比重差により水層と有機溶剤液層に分れるので、
有機溶剤液のみを取り出して回収することが可能とな
る。In the separation tank, it is heated to become water and an organic solvent liquid,
Both of them are divided into an aqueous layer and an organic solvent liquid layer due to the difference in specific gravity,
It is possible to take out and collect only the organic solvent liquid.
本発明の実施例を図面を用いて説明する。 Embodiments of the present invention will be described with reference to the drawings.
第１図において、１は断熱材で周囲を覆った密閉式の処
理槽で、天井壁の周縁側には互いに離れた位置に入口開
口２と出口開口３が設けられ、中央には噴出口４が設け
られている。５は有機溶剤ガスの発生槽で、密閉蓋には
空気吸引口６と有機溶剤ガスを含む空気の排出口７が設
けられている。そして、処理槽１の入口開口２は発生槽
５の排出口７に導入配管８で接続され、出口開口３は吸
引ファン９に導出配管10で接続されて、導入配管８、処
理槽１、導出配管10で有機溶剤を含む気体の通路が形成
されている。11は連通孔を多数穿設した隔壁で、導入配
管８から導入された有機溶剤ガスを含む空気が冷却され
ずに導出配管10から出て行くのを防止するもので、処理
槽１内の適宜位置に設けられる。In FIG. 1, reference numeral 1 denotes a hermetically sealed processing tank whose periphery is covered with a heat insulating material. An inlet opening 2 and an outlet opening 3 are provided at positions apart from each other on the peripheral edge side of a ceiling wall, and an injection port 4 is provided at the center. Is provided. Reference numeral 5 denotes an organic solvent gas generation tank, and an air suction port 6 and an air discharge port 7 for air containing the organic solvent gas are provided in the closed lid. The inlet opening 2 of the treatment tank 1 is connected to the discharge outlet 7 of the generation tank 5 by the introduction pipe 8, and the outlet opening 3 is connected to the suction fan 9 by the discharge pipe 10 to introduce the introduction pipe 8, the treatment tank 1, and the discharge pipe. A gas passage containing an organic solvent is formed in the pipe 10. Reference numeral 11 denotes a partition wall having a large number of communication holes, which prevents the air containing the organic solvent gas introduced from the introduction pipe 8 from leaving the discharge pipe 10 without being cooled. It is provided in the position.
噴出装置は、処理槽１内の有機溶剤ガスの凝固点よりも
低温の液化冷媒、例えば液化炭酸や液化窒素などの冷媒
貯留槽12と、弁14を備えた冷媒供給配管13を備え、処理
槽１の噴出口４に接続されている。The jetting device is provided with a liquefied refrigerant having a temperature lower than the freezing point of the organic solvent gas in the processing tank 1, for example, a refrigerant storage tank 12 of liquefied carbonic acid or liquefied nitrogen, and a refrigerant supply pipe 13 having a valve 14, It is connected to the spout 4 of.
処理槽１の底部には凝固した有機溶剤の貯留部15と排出
口16とが設けられており、間欠的、又は常時、凝固した
有機溶剤を処理槽１外に取出すようになっている。17は
水分離槽で、ヒータ18、溶剤導出管19及び水排出管19′
が設けられている。A reservoir 15 and a discharge port 16 for the solidified organic solvent are provided at the bottom of the processing tank 1, and the solidified organic solvent is taken out of the processing tank 1 intermittently or constantly. 17 is a water separation tank, which is a heater 18, a solvent outlet pipe 19 and a water discharge pipe 19 '.
Is provided.
しかして、発生槽５で発生した有機溶剤ガスは、導出配
管10に設けた吸引ファン９により空気とともに導入配管
８から処理槽１内に導入される。一方、冷媒貯留槽12中
の液化冷媒は冷媒供給配管13から処理槽１内に噴出供給
される。すると、液化冷媒が瞬時に減圧されて気化し、
液化冷媒が有機溶剤の凝固点より著しく低温の冷媒ガス
となって、処理槽１内の有機溶剤ガスを含む空気を有機
溶剤の凝固点より低温にまで冷却するので、処理槽１内
の有機溶剤ガスと水蒸気が凝固し、貯留部15に溜まり、
適宜排出口16から水分離槽17に導出される。有機溶剤ガ
スを分離した空気及び冷媒ガスは、導出配管10を通って
処理槽１から排出される。なお、処理槽１内には、多数
の連通孔を備えた隔壁11が設けられているので、有機溶
剤を含む空気が冷却されずに排出されるのを確実に防止
することができる。水分離槽17ではヒータ18により加熱
されて水と有機溶剤液になるが、両者は比重差により水
層と有機溶剤液層に分離されるので、有機溶剤液のみを
溶剤導出管19から取り出し回収することができる。Then, the organic solvent gas generated in the generation tank 5 is introduced into the processing tank 1 from the introduction pipe 8 together with air by the suction fan 9 provided in the discharge pipe 10. On the other hand, the liquefied refrigerant in the refrigerant storage tank 12 is jetted and supplied from the refrigerant supply pipe 13 into the processing tank 1. Then, the liquefied refrigerant is instantly depressurized and vaporized,
The liquefied refrigerant becomes a refrigerant gas having a temperature significantly lower than the freezing point of the organic solvent and cools the air containing the organic solvent gas in the processing tank 1 to a temperature lower than the freezing point of the organic solvent. The water vapor solidifies and accumulates in the reservoir 15,
The water is appropriately led to the water separation tank 17 from the discharge port 16. The air and the refrigerant gas from which the organic solvent gas is separated are discharged from the processing tank 1 through the outlet pipe 10. Since the partition 11 having a large number of communication holes is provided in the processing tank 1, it is possible to reliably prevent the air containing the organic solvent from being discharged without being cooled. In the water separation tank 17, it is heated by the heater 18 to become water and an organic solvent liquid, but since both are separated into a water layer and an organic solvent liquid layer due to the difference in specific gravity, only the organic solvent liquid is taken out from the solvent outlet pipe 19 and recovered. can do.
この場合、冷媒として炭酸、窒素等のようにそのまま大
気中に放出してもあまり害がないものを用いていれば、
そのまま大気中に排出することができる。In this case, if a refrigerant such as carbonic acid or nitrogen that does not cause much harm even if released into the atmosphere as it is,
It can be directly discharged into the atmosphere.
第２図は、有機溶剤を洗浄液として用いる洗浄装置20に
本発明に係る分離装置21を配備した例である。洗浄槽22
は３槽式洗浄槽で、吸引フード23で囲われており、吸引
フード23の、排気ファン24を備えた排気管に分離装置21
の処理槽１の入口開口２が接続されている。洗浄槽22の
気相部周囲には冷却コイル25が配備されている。26は
樋、洗浄槽22の空気吸引口は省略してある。FIG. 2 is an example in which a separation device 21 according to the present invention is provided in a cleaning device 20 that uses an organic solvent as a cleaning liquid. Cleaning tank 22
Is a three-tank type washing tank and is surrounded by a suction hood 23.
The inlet opening 2 of the processing tank 1 is connected. A cooling coil 25 is provided around the vapor phase portion of the cleaning tank 22. 26 is a gutter, and the air suction port of the cleaning tank 22 is omitted.
この実施例では、洗浄槽22で発生した有機溶剤ガスの一
部は冷却コイル25により凝縮して樋26から回収される。
有機溶剤ガスの大部分は吸収フード23から分離装置21に
導入される。有機溶剤ガスの大部分はこの分離装置21で
殆ど凝固してしまい、有機溶剤ガスを殆ど含まない清浄
な空気は処理槽１の出口開口３から大気に放出される。
樋26から回収された凝集液から分離した液状の有機溶剤
及び分離装置21の水分離槽17で分離した液状の有機溶剤
は再び洗浄槽22に戻され、洗浄液として使用される。In this embodiment, a part of the organic solvent gas generated in the cleaning tank 22 is condensed by the cooling coil 25 and collected from the gutter 26.
Most of the organic solvent gas is introduced from the absorption hood 23 into the separation device 21. Most of the organic solvent gas is almost coagulated in the separating device 21, and clean air containing almost no organic solvent gas is discharged from the outlet opening 3 of the processing tank 1 to the atmosphere.
The liquid organic solvent separated from the coagulation liquid collected from the gutter 26 and the liquid organic solvent separated in the water separation tank 17 of the separation device 21 are returned to the cleaning tank 22 again and used as a cleaning liquid.
第３図は分離装置21の処理槽１から排出される、有機溶
剤ガスを殆んど含まない清浄な空気を、大気に放出せず
に循環使用するようにしたものである。FIG. 3 shows that clean air discharged from the processing tank 1 of the separator 21 and containing almost no organic solvent gas is circulated and used without being discharged to the atmosphere.
処理槽１の入口開口２は吸引フード27に配管により接続
され、出口開口３は吸引フード27に対向して設けた乾燥
用空気の吹付ノズル28に清浄空気供給管29で接続されて
いる。そして、有機溶剤で処理したフープを吹付ノズル
28と吸引フード27との間を走行させてフープを乾燥させ
るようにしたものである。この実施例では、フープに付
着している液状の有機溶剤は吹付ノズル28から吹付けら
れる清浄空気により、蒸発せしめられ、有機溶剤ガスを
含んだ空気が吸引フード27から処理槽１内に導入され
る。処理槽１内で有機溶剤を分離された清浄空気は清浄
空気供給管29を通って再び吹付ノズル28から噴出され、
乾燥用に供される。The inlet opening 2 of the processing tank 1 is connected to a suction hood 27 by piping, and the outlet opening 3 is connected to a drying air blowing nozzle 28 provided facing the suction hood 27 by a clean air supply pipe 29. Then, the hoop treated with the organic solvent is sprayed on the nozzle.
The hoop is dried by running between the suction hood 27 and the suction hood 27. In this embodiment, the liquid organic solvent attached to the hoop is evaporated by the clean air sprayed from the spray nozzle 28, and the air containing the organic solvent gas is introduced from the suction hood 27 into the processing tank 1. It The clean air from which the organic solvent has been separated in the treatment tank 1 passes through the clean air supply pipe 29 and is ejected from the spray nozzle 28 again.
Used for drying.
第4,5図は、液化冷媒として液化炭酸を用い、約1m3/分
で処理槽１内に噴出して処理槽１内の温度を−30〜−50
℃に冷却したときの実験結果を示し、有機溶剤は、第４
図はトリクロルエタン、第５図はトリクロロトリフルオ
ルエタンである。In Fig. 4 and 5, liquefied carbonic acid is used as the liquefied refrigerant, and the temperature in the treatment tank 1 is jetted into the treatment tank 1 at about 1 m 3 / min and the temperature in the treatment tank 1 is -30 to -50.
The experimental results when cooled to ℃, the organic solvent is the fourth
The figure shows trichloroethane, and FIG. 5 shows trichlorotrifluoroethane.
以上のように本発明によれば、一方端に入口開口を、他
方端に出口開口を、中央部に液化冷媒ガス噴出装置を設
けた処理槽の内部に多数の連通孔を備えた隔壁を前記入
口開口と液化冷媒ガス噴出装置との間に垂設し、この処
理槽を有機溶剤ガス導出配管の中途に連結して処理槽内
で有機溶剤を含む液体を凝固点以下に冷却し、有機溶剤
ガスおよび水分を凝固して回収するようにしているの
で、直接冷却により大きな冷却効果が期待できる。ま
た、有機溶剤を含む気体を凝固点以下まで瞬時に効率良
く冷却することができ、有機溶剤を変質させずに極めて
簡単に効率良く回収することができる。また、有機溶剤
が変質していないので、回収して再使用することが可能
となる。また、処理槽内に多数の連通孔を備えた隔壁を
垂設したので、有機溶剤を含む気体が冷却されずに排出
されるのを確実に防止することができるという格別の効
果がある。さらに、処理槽を有機溶剤ガス導出管の中途
に連結するだけであるので、各種の有機溶剤使用機器に
簡単に適用することが可能となる。As described above, according to the present invention, an inlet opening is provided at one end, an outlet opening is provided at the other end, and a partition wall having a large number of communication holes is provided inside a processing tank provided with a liquefied refrigerant gas injection device at the center thereof. It is installed vertically between the inlet opening and the liquefied refrigerant gas jetting device, and this processing tank is connected to the middle of the organic solvent gas discharge pipe to cool the liquid containing the organic solvent to below the freezing point in the processing tank, and the organic solvent gas Also, since the water is solidified and collected, a large cooling effect can be expected by direct cooling. Further, the gas containing the organic solvent can be instantly and efficiently cooled to a temperature below the freezing point, and the organic solvent can be recovered very easily and efficiently without degrading. In addition, since the organic solvent has not deteriorated, it is possible to collect and reuse it. Further, since the partition wall provided with a large number of communication holes is vertically provided in the processing tank, it is possible to reliably prevent the gas containing the organic solvent from being discharged without being cooled. Furthermore, since the treatment tank is simply connected to the middle of the organic solvent gas outlet pipe, it can be easily applied to various kinds of organic solvent-using equipment.
第１図は本発明の実施例のフロー図、第2,3図はそれぞ
れ別の実施例のフロー図、第4,5図はそれぞれ入口、出
口における有機溶剤ガス濃度値を示すグラフである。 １……処理槽、２……入口開口、３……出口開口、４…
…噴出口、５……発生槽、６……空気吸引口、７……排
出口、８……導入配管、９……吸引ファン、10……導出
配管、11……隔壁、12……冷媒貯留槽、13……冷媒供給
配管、14……弁、15……貯留部、16……排出口、17……
水分離槽、18……ヒータ、19……溶剤導出管、19′……
水排出管、20……洗浄装置、21……分離装置、22……洗
浄槽、23……吸引フード、24……排気ファン、25……冷
却コイル、26……樋、27……吸引フード、28……吹付ノ
ズル、29……清浄空気供給管。FIG. 1 is a flow chart of an embodiment of the present invention, FIGS. 2 and 3 are flow charts of different embodiments, and FIGS. 4 and 5 are graphs showing organic solvent gas concentration values at an inlet and an outlet, respectively. 1 ... Treatment tank, 2 ... Inlet opening, 3 ... Outlet opening, 4 ...
… Jet port, 5 …… Generation tank, 6 …… Air suction port, 7 …… Outlet port, 8 …… Inlet pipe, 9 …… Suction fan, 10 …… Outlet pipe, 11 …… Partition wall, 12 …… Refrigerant Storage tank, 13 ... Refrigerant supply pipe, 14 ... Valve, 15 ... Reservoir, 16 ... Discharge port, 17 ...
Water separation tank, 18 ... Heater, 19 ... Solvent outlet pipe, 19 '...
Water discharge pipe, 20 ... Washing device, 21 ... Separating device, 22 ... Washing tank, 23 ... Suction hood, 24 ... Exhaust fan, 25 ... Cooling coil, 26 ... Gutter, 27 ... Suction hood , 28 ... Spray nozzle, 29 ... Clean air supply pipe.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 相澤 逞一 東京都西多摩郡羽村町栄町３丁目１番地の ５ 海上電機株式会社内 (72)発明者 鈴木 孝 東京都西多摩郡羽村町栄町３丁目１番地の ５ 海上電機株式会社内 (56)参考文献 特開 昭64−58301（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Taichi Aizawa, 3-1, 1-1, Sakaemachi, Hamura-cho, Nishitama-gun, Tokyo Within Marine Electric Co., Ltd. (72) Inventor Takashi Suzuki 3-chome, 1-chome, Hamura-cho, Nishitama-gun, Tokyo Address No. 5 within Kaiyo Denki Co., Ltd. (56) References Japanese Patent Laid-Open No. 64-58301 (JP, A)
Claims (1)
を、中央部に液化冷媒ガス噴出装置を設けた処理槽の内
部に多数の連通孔を備えた隔壁を前記入口開口と液化冷
媒ガス噴出装置との間に垂設し、この処理槽を有機溶剤
ガス導出配管の中途に連結して処理槽内で有機溶剤を含
む気体を凝固点以下に冷却し、有機溶剤ガスおよび水分
を凝固して回収するようにしたことを特徴とする気体中
の有機溶剤の分離装置。1. A partition having a large number of communication holes inside a processing tank having an inlet opening at one end, an outlet opening at the other end, and a liquefied refrigerant gas injection device at the center, and the liquefied refrigerant. It is installed vertically between the gas injection device and this processing tank is connected in the middle of the organic solvent gas outlet pipe to cool the gas containing the organic solvent to below the freezing point in the processing tank to solidify the organic solvent gas and water. A device for separating an organic solvent in a gas, which is characterized in that the organic solvent in the gas is collected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62270347A JPH0722648B2 (en) | 1987-10-28 | 1987-10-28 | Separator for organic solvent in gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62270347A JPH0722648B2 (en) | 1987-10-28 | 1987-10-28 | Separator for organic solvent in gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01115402A JPH01115402A (en) | 1989-05-08 |
| JPH0722648B2 true JPH0722648B2 (en) | 1995-03-15 |
Family
ID=17484995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62270347A Expired - Lifetime JPH0722648B2 (en) | 1987-10-28 | 1987-10-28 | Separator for organic solvent in gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722648B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106902723B (en) * | 2017-03-29 | 2022-12-13 | 天津大学 | Refrigerant destroying and recycling treatment device and treatment method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6458301A (en) * | 1987-08-31 | 1989-03-06 | Takeshi Naito | Recovering equipment for solvent |
-
1987
- 1987-10-28 JP JP62270347A patent/JPH0722648B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01115402A (en) | 1989-05-08 |
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