JPS5549129A - Evaporating gas recovery method of organic solvent - Google Patents
Evaporating gas recovery method of organic solventInfo
- Publication number
- JPS5549129A JPS5549129A JP12205278A JP12205278A JPS5549129A JP S5549129 A JPS5549129 A JP S5549129A JP 12205278 A JP12205278 A JP 12205278A JP 12205278 A JP12205278 A JP 12205278A JP S5549129 A JPS5549129 A JP S5549129A
- Authority
- JP
- Japan
- Prior art keywords
- absorbing solution
- waste gas
- organic solvent
- gas
- added
- 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.)
- Pending
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To recover the captioned waste gas inexpensively and prevent atmospheric pollution by letting the organic solvent evaporation gas of more than about 0°C in freezing point be absorbed in the absorbing solution added with a freezing-point depressant and recovering evaporation gas from part of the absorbing solution with a vacuum evaporator.
CONSTITUTION: The mixed flow 1 of the organic solvent waste gas having freezing point been above about 0°C such as of benzene, acetic acid and other and air is admitted to the bottom part of an absorption tower 3. The absorbing solution beforehand added with a freezing point depressant such as dioctyl phthalate or other (the depressant is added at 50W20wt% based on the weight of the absorbing solution) is supplied from the top of said tower by way of a pump 6 and cooler 9. The air is exhausted through an exhaust pipe 5 and part of the circulating waste-gas absorbing solution is led to a vacuum evaporator 11 through a valve 10. A vacuum pump 12 is operated to evaporate and recover only the absorbed waste gas. The absorbing solution is joined through a pump 14 to the absorbing solution being discharged from the absorption tower 3. This method does not require costly chemicals as with conventional methods, makes regeneration easy and is effective for recovering of the waste gas in a tank lorry at the time of loading organic solvents into the tank lorry, etc.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12205278A JPS5549129A (en) | 1978-10-05 | 1978-10-05 | Evaporating gas recovery method of organic solvent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12205278A JPS5549129A (en) | 1978-10-05 | 1978-10-05 | Evaporating gas recovery method of organic solvent |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5549129A true JPS5549129A (en) | 1980-04-09 |
Family
ID=14826415
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12205278A Pending JPS5549129A (en) | 1978-10-05 | 1978-10-05 | Evaporating gas recovery method of organic solvent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5549129A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105126543A (en) * | 2015-10-08 | 2015-12-09 | 杨洋 | Organic waste gas absorbing liquid and preparing method thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5239785A (en) * | 1975-09-25 | 1977-03-28 | Sumitomo Chem Co Ltd | Unsaturated polyester resin compositions with low shrinkage |
-
1978
- 1978-10-05 JP JP12205278A patent/JPS5549129A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5239785A (en) * | 1975-09-25 | 1977-03-28 | Sumitomo Chem Co Ltd | Unsaturated polyester resin compositions with low shrinkage |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105126543A (en) * | 2015-10-08 | 2015-12-09 | 杨洋 | Organic waste gas absorbing liquid and preparing method thereof |
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