CN209204955U - Emission-control equipment in process for ethylene oxide production - Google Patents
Emission-control equipment in process for ethylene oxide production Download PDFInfo
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- CN209204955U CN209204955U CN201821789885.8U CN201821789885U CN209204955U CN 209204955 U CN209204955 U CN 209204955U CN 201821789885 U CN201821789885 U CN 201821789885U CN 209204955 U CN209204955 U CN 209204955U
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- ethylene oxide
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- control equipment
- oxide production
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Abstract
The utility model relates to chemical fields, provide emission-control equipment in process for ethylene oxide production, formaldehyde, the acetaldehyde in tail gas are condensed and absorbed by condensation water tank, avoid exhaust emission, by increasing surge tank and being condensed to surge tank, it reduces vapor to bring into blower and discharge tube, corrosion pipeline.The water in condensation water tank is persistently condensed by condenser, it is made to remain 35 degrees Celsius of temperature below, it is ensured that continues efficient absorption tail gas；The tail gas after absorption is handled thus by scrubbing tower, avoids the discharge of remaining pernicious gas.The technical program passes through multistage absorption plant, it is ensured that complete and discharge the environmental protection of absorption.
Description
Technical field
The utility model relates to chemical fields, and in particular to emission-control equipment in process for ethylene oxide production.
Background technique
Ethylene oxide device exhaust gas is mainly the incoagulable gas of rectifying tower top, and main component is formaldehyde, acetaldehyde, nitrogen
Deng.If steam condensate (SC) temperature is lower than 35 DEG C, formaldehyde and acetaldehyde can condense and be dissolved in water.Under the usual condition of production, due to
The flow of tail gas is larger, and temperature is higher, and common condensing unit is being dissolved not in time and condensed completely, and tail gas is just emitted into air
In, it pollutes the environment, blower is caused to corrode.
Summary of the invention
In order to overcome the shortcomings in the prior art, the purpose of this utility model is to provide a kind of pair of complete rings of vent gas treatment
Emission-control equipment in oxidative ethane production process.
To achieve the above objectives, the utility model take and technical solution are as follows:
Emission-control equipment in process for ethylene oxide production, the condensate tank including sealing, water tank are provided with condensed water, give up
Gas enters condensate tank from steam jet ejector, and the escape pipe of the steam jet ejector protrudes into condensate tank liquid level or less；Condensed water
Box top connects scrubbing tower through pipeline, and tail gas is sent through centrifugal blower to delivery pipe after scrubbing tower washing, from its top, described to wash
It washs and is concatenated between tower and centrifugal blower by surge tank, it is cooling that the surge tank leads to circulating condensing water.
Further, filler is installed and by desalination water spray in the scrubbing tower.
Further, the U-shaped water seal that the condensate tank is 0.2 meter using overflow port pipeline setting height.
Still further, the condensed water in condensate tank sends condensate tank back to after circulating pump is pumped to condenser cooling.
After taking above technical scheme, the utility model has the following beneficial effects:
The technical program is condensed and is absorbed to formaldehyde, the acetaldehyde in tail gas by condensation water tank, and exhaust emission is avoided,
By increasing surge tank and condensing to surge tank, reduction vapor is brought into blower and discharge tube, corrosion pipeline.Pass through
Condenser persistently condenses the water in condensation water tank, it is made to remain 35 degrees Celsius of temperature below, it is ensured that continues efficiently to inhale
Finish up gas；The tail gas after absorption is handled thus by scrubbing tower, avoids the discharge of remaining pernicious gas.The technical program
Pass through multistage absorption plant, it is ensured that complete and discharge the environmental protection of absorption.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: condensate tank 1, circulating pump 2, condenser 3, steam jet ejector 4, U-shaped water seal 5, scrubbing tower 6, surge tank 7,
Centrifugal blower 8.
Specific embodiment
Specific embodiment of the present utility model is further described below in conjunction with attached drawing:
As shown, emission-control equipment in process for ethylene oxide production, the condensate tank 1 including sealing, water tank 1 are built-in
There is condensed water, the condensed water in condensate tank 1 sends condensate tank 1 back to after circulating pump 2 is pumped to the cooling of condenser 3.In order to protect
Enough refrigerating capacitys are demonstrate,proved, can choose two condenser series connection while being condensed.Condenser 3 is shell-and-tube cooler, using following
Ring water is cooling.The exhaust gas that production line generates enters condensate tank 1 from steam jet ejector 4, and the escape pipe of steam jet ejector 4 protrudes into solidifying
Tie water tank level or less, it is ensured that tail gas is fully cooled absorption by water.Condensate tank 1 is 0.2 using overflow port pipeline setting height
The U-shaped water seal 5 of rice avoids forming negative pressure in condensate tank.1 top of condensate tank connects scrubbing tower 6 through pipeline, scrubbing tower 6
Diameter is 300mm, the packed tower of a height of 1800mm, and inner-tower filling material is divided to two sections, every section of 600mm, carries out spray using desalted water and washes
It washs, increases the assimilation effect of PARA FORMALDEHYDE PRILLS(91,95) and acetaldehyde；Tail gas enters in surge tank 7 after scrubbing tower washing, and 7 volume of surge tank is
1 cubic metre, buffer tank wall on it is mountable have collet, recirculated cooling water is passed through in collet, the water of the condensation in surge tank 7 can lead to
Condensate tank 1 is flowed back in piping and valve control.The formaldehyde of vapor and only a few remnants, acetaldehyde liquefy and inhale in surge tank
It receives, remaining nitrogen is sent through centrifugal blower 8 to delivery pipe from the top of surge tank, is discharged in 20 meters of eminences.8 flow of centrifugal blower
About 500m3/ h, using rear curved steel impeller list air intake centrifugal blower, 304 stainless steel of material selection, static pressure 3125Pa is used
Fire-proof motor frequency control.
Claims (4)
1. emission-control equipment in process for ethylene oxide production, the condensate tank including sealing, water tank are provided with condensed water, exhaust gas
Enter condensate tank from steam jet ejector, the escape pipe of the steam jet ejector protrudes into condensate tank liquid level or less；Condensate tank
Top connects scrubbing tower through pipeline, and tail gas is sent through centrifugal blower to delivery pipe after scrubbing tower washing, from its top, and feature exists
In being concatenated between the scrubbing tower and centrifugal blower by surge tank, it is cooling that the surge tank leads to circulating condensing water.
2. emission-control equipment in process for ethylene oxide production according to claim 1, which is characterized in that the scrubbing tower
Filler is inside installed and by desalination water spray.
3. emission-control equipment in process for ethylene oxide production according to claim 1, which is characterized in that the condensed water
The U-shaped water seal that case is 0.2 meter using overflow port pipeline setting height.
4. emission-control equipment in process for ethylene oxide production according to claim 1, which is characterized in that in condensate tank
Condensed water through circulating pump pump to condenser it is cooling after send condensate tank back to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821789885.8U CN209204955U (en) | 2018-11-01 | 2018-11-01 | Emission-control equipment in process for ethylene oxide production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821789885.8U CN209204955U (en) | 2018-11-01 | 2018-11-01 | Emission-control equipment in process for ethylene oxide production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209204955U true CN209204955U (en) | 2019-08-06 |
Family
ID=67457852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821789885.8U Active CN209204955U (en) | 2018-11-01 | 2018-11-01 | Emission-control equipment in process for ethylene oxide production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209204955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485070A (en) * | 2020-11-11 | 2021-03-12 | 宁夏计量质量检验检测研究院 | Method and device for sampling toxic and harmful gas |
| CN114405220A (en) * | 2022-02-22 | 2022-04-29 | 连云港石化有限公司 | Carbon dioxide tail gas treatment system and using method thereof |
-
2018
- 2018-11-01 CN CN201821789885.8U patent/CN209204955U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485070A (en) * | 2020-11-11 | 2021-03-12 | 宁夏计量质量检验检测研究院 | Method and device for sampling toxic and harmful gas |
| CN114405220A (en) * | 2022-02-22 | 2022-04-29 | 连云港石化有限公司 | Carbon dioxide tail gas treatment system and using method thereof |
| CN114405220B (en) * | 2022-02-22 | 2022-11-11 | 连云港石化有限公司 | Carbon dioxide tail gas treatment system and using method thereof |
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