CN205392104U - CO's device is retrieved to acetic acid tail gas - Google Patents
CO's device is retrieved to acetic acid tail gas Download PDFInfo
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- CN205392104U CN205392104U CN201620177099.7U CN201620177099U CN205392104U CN 205392104 U CN205392104 U CN 205392104U CN 201620177099 U CN201620177099 U CN 201620177099U CN 205392104 U CN205392104 U CN 205392104U
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- cooler
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
Abstract
The utility model provides a CO's device is retrieved to acetic acid tail gas, the device that methyl alcohol washed that is used for including interconnect, do you be used for PSA 1 the device of workshop section, do you be used for PSA 2 the device of workshop section with be used for PSA 3 the device of workshop section, do you wherein be used for PSA 2 is the device of workshop section through the same PSA of the pipeline that has the 5th governing valve 3 the workshop section is connected, do you be used for PSA 2 is the device of workshop section through the same PSA of the pipeline that has the 5th governing valve 3 combination department that the workshop section is connected with the regeneration gas cooler through the pipeline, and is the regeneration gas cooler through the pipeline with being used for PSA 1 the device of workshop section is connected, avoided a large amount of CO among the prior art to empty and not only wasted the energy, increase acetic acid manufacturing cost, but also polluted the defect of environment.
Description
Technical field
The utility model belongs to tail gas recycle technical field, is specifically related to a kind of device reclaiming CO for acetate acid tail gas.
Background technology
The tail gas produced during production of acetic acid, due to the restriction of separation and recovery technology, current majority is all made at emptying
Reason.Containing substantial amounts of CO in acetate acid tail gas, being slightly changed according to the difference of each the condition of production, relatively common composition is the most right
The acetic acid plant of a set of annual output acetic acid 100,000 t, tail gas CO tolerance is about 1500～2000Nm3/h.CO is the basic of production of acetic acid
Raw material, substantial amounts of CO is vented, had both wasted the energy, and added production of acetic acid cost, pollute again environment.Each production of acetic acid producer
In the urgent need to the technique finding a kind of simple efficient recovery of acetic acid tail gas.
Utility model content
The purpose of this utility model provides a kind of device reclaiming CO for acetate acid tail gas, it is to avoid of the prior art greatly
The CO emptying of amount had not only wasted the energy, and had added production of acetic acid cost, but also pollutes the defect of environment.
In order to overcome deficiency of the prior art, the utility model provides a kind of device reclaiming CO for acetate acid tail gas
Solution, specific as follows:
A kind of device reclaiming CO for acetate acid tail gas, the device washed for methyl alcohol including interconnective, for PSA-1
The device of workshop section, the device for PSA-2 workshop section and the device for PSA-3 workshop section, wherein the device for PSA-2 workshop section leads to
Crossing the pipeline with the 5th regulation valve to be connected with PSA-3 workshop section, the device for PSA-2 workshop section passes through with the 5th regulation valve
The junction that is connected with PSA-3 workshop section of pipeline be connected with regeneration gas cooler by pipeline, and regeneration gas cooler leads to
Piping is connected with the device for PSA-1 workshop section；
The device wherein washed for methyl alcohol includes that the first blending tank and Methanol Wash Column, described first blending tank and methyl alcohol are washed
Wash and be connected by pipeline between tower, be connected by pipeline between described Methanol Wash Column and separator；
The described device for PSA-1 workshop section includes separator, the first regulation valve, the adsorption tower of PSA-1 workshop section, purification gas
Surge tank, the 4th regulation valve and purification hot-air heater, described separator by regulating the pipeline of valve with PSA-1 workshop section with first
Adsorption tower be connected, the adsorption tower of described PSA-1 workshop section by pipeline with purify gas surge tank be connected, described purification gas delay
Rushing tank to be connected by the pipeline same purification hot-air heater with the 4th regulation valve, described purification hot-air heater is same by pipeline
The adsorption tower of PSA-2 workshop section is connected；
The described device for PSA-2 workshop section includes the adsorption tower of PSA-2 workshop section, and the adsorption tower of described PSA-2 workshop section leads to
Piping is connected with the device for PSA-1 workshop section, and the adsorption tower of described PSA-2 workshop section is by the pipe with the first sequencing valve
Road is connected with downflow releasing tank, described downflow releasing tank by being connected with putting useless tank with the pipeline of the second sequencing valve, described in put useless tank
By with second regulation valve pipeline be connected with downflow releasing tank, described in put useless tank by with second regulation valve pipeline with suitable
Put the joint portion that tank is connected to be connected with the device for PSA-3 workshop section by pipeline, described in put useless tank by with the 3rd
The pipeline of sequencing valve is connected with CO surge tank, and described CO surge tank is by with the pipeline of the second regulation valve and adjusting with the 3rd
The pipeline of joint valve is connected with pipeline；Pipeline further with the second sequencing valve is connected with cooler before the first pump, and first
Before pump, cooler is connected with the first vavuum pump, and described first vavuum pump is connected with pipeline；Second mixing of described mixing CO
Tank is also connected with the device for PSA-3 workshop section with the device for PSA-2 workshop section, and described second blending tank is also by pipeline
Being connected with cooler before compression, before described compression, cooler is by the same air blast of pipeline, the first cooler, flowmeter and oil expeller shape
Becoming a path, before compression, cooler is connected with compressor also by the pipeline with the 4th regulation valve；Described oil expeller is also same
Device for PSA-2 workshop section is connected with the device for PSA-3 workshop section；
Described put useless tank by the joint portion that is connected with downflow releasing tank with the pipeline of the second regulation valve by pipeline with
The adsorption tower of PSA-3 workshop section is connected, and the adsorption tower of described PSA-3 workshop section by regulating the pipeline of valve with pipeline phase with the 5th
Connect；Pipeline further with the second sequencing valve is connected with cooler before the second pump, and before described second pump, cooler is by pipe
Road is connected with the second vavuum pump, and described second vavuum pump is connected with pipeline by pipeline.
The utility model goes back to acetic synthesis workshop by washing methyl alcohol；Methyl alcohol uses washing after washing；Washing gas after washing
Return to battery limit (BL), through being decompressed to 1.6MPa, by PSA-1 by CO2Removing, removes impurity compositions such as moisture in gas simultaneously；De-
Except CO2Decarbonization gas go to PSA-2 workshop section, use pressure swing adsorption technique to purify CO；Because the displacement waste gas of PSA-2 discharge contains more
CO, use PSA-3 further purify reclaim displacement waste gas in CO.Products C O boosts to 3.3MPa through compressor, send acetic acid
Raw material is done in synthesis workshop.PSA-2 purifies the absorption waste gas after CO and the absorption waste gas after PSA-3 purification CO and displacement waste gas.Keep away
Exempt from substantial amounts of CO of the prior art emptying not only to have wasted the energy, and added production of acetic acid cost, but also pollute lacking of environment
Fall into.Achieve the effect of simple efficient recovery of acetic acid tail gas.
Accompanying drawing explanation
Fig. 1 is the structural representation of the device washed for methyl alcohol.
Fig. 2 is the structural representation of the device for PSA-1 workshop section of the present utility model.
Fig. 3 is the part-structure schematic diagram of the device for PSA-2 workshop section of the present utility model.
Fig. 4 is another part structural representation of the device for PSA-2 workshop section of the present utility model.
Fig. 5 is the structural representation of the device for PSA-3 workshop section of the present utility model.
Detailed description of the invention
With embodiment, utility model content is described further below in conjunction with the accompanying drawings:
With reference to shown in Fig. 1-Fig. 5, reclaim the device of CO for acetate acid tail gas, including the interconnective dress washed for methyl alcohol
Put, the device for PSA-1 workshop section, the device for PSA-2 workshop section and the device for PSA-3 workshop section, wherein for PSA-2
The device of workshop section is by being connected with PSA-3 workshop section with the pipeline of the 5th regulation valve, and the device for PSA-2 workshop section passes through band
The junction having the pipeline of the 5th regulation valve to be connected with PSA-3 workshop section is connected with regeneration gas cooler by pipeline, and again
Angry cooler is connected with the device for PSA-1 workshop section by pipeline；
The device wherein washed for methyl alcohol includes that the first blending tank and Methanol Wash Column, described first blending tank and methyl alcohol are washed
Wash and be connected by pipeline between tower, be connected by pipeline between described Methanol Wash Column and separator；
The described device for PSA-1 workshop section includes separator, the first regulation valve, the adsorption tower of PSA-1 workshop section, purification gas
Surge tank, the 4th regulation valve and purification hot-air heater, described separator by regulating the pipeline of valve with PSA-1 workshop section with first
Adsorption tower be connected, the adsorption tower of described PSA-1 workshop section by pipeline with purify gas surge tank be connected, described purification gas delay
Rushing tank to be connected by the pipeline same purification hot-air heater with the 4th regulation valve, described purification hot-air heater is same by pipeline
The adsorption tower of PSA-2 workshop section is connected；
The described device for PSA-2 workshop section includes the adsorption tower of PSA-2 workshop section, and the adsorption tower of described PSA-2 workshop section leads to
Piping is connected with the device for PSA-1 workshop section, and the adsorption tower of described PSA-2 workshop section is by the pipe with the first sequencing valve
Road is connected with downflow releasing tank, described downflow releasing tank by being connected with putting useless tank with the pipeline of the second sequencing valve, described in put useless tank
By with second regulation valve pipeline be connected with downflow releasing tank, described in put useless tank by with second regulation valve pipeline with suitable
Put the joint portion that tank is connected to be connected with the device for PSA-3 workshop section by pipeline, described in put useless tank by with the 3rd
The pipeline of sequencing valve is connected with CO surge tank, and described CO surge tank is by with the pipeline of the second regulation valve and adjusting with the 3rd
The pipeline of joint valve is connected with pipeline；Pipeline further with the second sequencing valve is connected with cooler before the first pump, and first
Before pump, cooler is connected with the first vavuum pump, and described first vavuum pump is connected with pipeline；Second mixing of described mixing CO
Tank is also connected with the device for PSA-3 workshop section with the device for PSA-2 workshop section, and described second blending tank is also by pipeline
Being connected with cooler before compression, before described compression, cooler is by the same air blast of pipeline, the first cooler, flowmeter and oil expeller shape
Becoming a path, before compression, cooler is connected with compressor also by the pipeline with the 4th regulation valve；Described oil expeller is also same
Device for PSA-2 workshop section is connected with the device for PSA-3 workshop section；
Described put useless tank by the joint portion that is connected with downflow releasing tank with the pipeline of the second regulation valve by pipeline with
The adsorption tower of PSA-3 workshop section is connected, and the adsorption tower of described PSA-3 workshop section by regulating the pipeline of valve with pipeline phase with the 5th
Connect；Pipeline further with the second sequencing valve is connected with cooler before the second pump, and before described second pump, cooler is by pipe
Road is connected with the second vavuum pump, and described second vavuum pump is connected with pipeline by pipeline.
Method for the device of acetate acid tail gas recovery CO is to be fallen acetic acid and the iodine of trace in unstripped gas by methyl alcohol eccysis
Methane, washing methyl alcohol goes back to acetic synthesis workshop；Methyl alcohol uses washing, washing to utilize existing water wash system to complete after washing；Washing
After washing gas return battery limit (BL), through being decompressed to 1.6MPa, by PSA-1 workshop section by CO2Removing, simultaneously that moisture in gas etc. is miscellaneous
Matter component is removed；Removing CO2Decarbonization gas go to PSA-2 workshop section, use pressure swing adsorption technique to purify CO, be met CO mass and want
The product asked；Because the displacement waste gas of PSA-2 workshop section discharge contains more CO, use PSA-3 workshop section to purify recovery further and put
Change the CO in waste gas, improve the yield of CO；Products C O boosts to 3.3MPa through compressor, send acetic synthesis workshop to do raw material；
PSA-2 workshop section purifies the absorption waste gas after CO and the absorption waste gas after PSA-3 workshop section purification CO and displacement waste gas, for PSA-1
The regeneration of workshop section, the gas after regeneration, i.e. stripping gas, send battery limit (BL) for user.
The process that described methyl alcohol is washed is:
Come two strands of acetic synthesis tail gas from acetic synthesis workshop, and wherein the flow of the material of one acetic acid is 1300Nm3/
H, pressure are 2.74Mpag and temperature is 37 DEG C；The flow of the material of another strand of acetic acid is 2700Nm3/ h, pressure are 2.76Mpag
And temperature is 34.4 DEG C；Two strands of materials enter Methanol Wash Column after the first blending tank mixing, remove the trace vinegar wherein contained
Acid and iodomethane, go out battery limit (BL) entrance existing washing workshop section and wash, and the synthesis tail gas after washing enters PSA-1 workshop section.
The process of described PSA-1 workshop section is:
The acetic synthesis tail gas come from washing workshop section initially enters separator and carries out gas-liquid separation, then through the first regulation
After valve is depressurized to 1.6MPa, the adsorption tower entering PSA-1 workshop section carries out pressure-variable adsorption, adsorbent in the adsorption tower of PSA-1 workshop section
To CO in gas2Carrying out selective absorption, remaining thick CO gas enters purification gas after the adsorption tower bed of PSA-1 workshop section
Surge tank, from purifying gas surge tank tail gas out, being warming up to air pressure through the 4th regulation valve step-down and purification hot-air heater is
0.8Mpa and temperature deliver to PSA-2 workshop section after being 70 DEG C, purify CO further as PSA-2 workshop section unstripped gas；
After the adsorption tower absorption of described PSA-1 workshop section is saturated, through equal pressure drop, inverse put, flushing, all press liter, fill eventually such
Step regenerates, and recycles；And from the absorption waste gas of PSA-2 workshop section, it is depressurized to 0.08MPa through the 5th regulation valve, with
Absorption waste gas from PSA-3 workshop section mixes, and is cooled to 40 DEG C through regeneration gas cooler, as the flushing gas of PSA-1 workshop section.Whole
Individual process passes through SECO so that it is continuous, stable that outlet purifies gas.
The process of described PSA-2 workshop section is:
The purification gas come from PSA-1 workshop section enters the adsorption tower of PSA-2 workshop section and carries out pressure-variable adsorption, PSA-2 workshop section
Copper-carrying adsorbent in adsorption tower has stronger adsorption capacity to CO, is absorbed by CO in gas, purifies remaining in gas
Component gases sends into PSA-1 workshop section as regeneration gas after the adsorbent of the adsorption tower of PSA-2 workshop section；
After the adsorption tower absorption of PSA-2 workshop section is saturated, through equal pressure drop, along putting, replace, inverse put, evacuation, all press liter, fill eventually
Such step regenerates, and recycles；
Entering downflow releasing tank along venting through the first sequencing valve, displacement waste gas enters through the second sequencing valve and puts useless tank, puts useless tank and go out
The gas come, after the second regulation valve is depressurized to 0.08MPa, mixes with downflow releasing tank gas out, and gaseous mixture is sent to PSA-3 work
Section, as PSA-3 workshop section unstripped gas；
Inverse put early stage, owing to pressure is higher, inverse put gas enters CO surge tank by the first sequencing valve, then through the second regulation
Valve is depressurized to 0.01MPa, enters pipeline PG-09224 and mixes with other CO product gas；
In the inverse put later stage, inverse put gas is directly entered pipeline by the 3rd regulation valve and mixes with other CO product gas；
Pump-down, evacuates gas and enters before the first pump after cooler cooling by the second sequencing valve, enter the first vavuum pump
Evacuating, during evacuation, maximum vacuum is up to-0.08MPa.Enter as product gas from the first vavuum pump gas out
Pipeline；
After the inverse put gas of PSA-2 workshop section and evacuation gas mix with the evacuation gas of PSA-3 workshop section, enter the second of mixing CO
Blending tank, the compressed front cooler of the second blending tank gas out is cooled to 40 DEG C, is divided into two strands；Wherein a stock-traders' know-how air blast adds
Pressure, the first cooler cooling, after flowmeter metering, enter oil expeller, oil expeller gas out is divided into two strands, delivers to respectively
PSA-2 workshop section and PSA-3 workshop section are as displacement gas；Another strand of gas, as product gas, after the 4th regulation valve pressure regulation, delivers to pressure
Contracting machine is forced into 3.3MPa, delivers to acetic synthesis workshop.
The process of described PSA-3 workshop section is:
The displacement gas come from PSA-2 workshop section enters the adsorption tower of PSA-3 workshop section and carries out pressure-variable adsorption, PSA-3 workshop section
In adsorption tower, adsorbent carries out selective absorption to CO in gas, and the absorption waste gas through the adsorption tower of PSA-3 workshop section delivers to PSA
One section；
After the adsorption tower absorption of PSA-3 workshop section is saturated, through equal pressure drop, along putting, replace, inverse put, evacuation, all press liter, fill eventually
Such step regenerates, and recycles；
Inverse put gas is directly entered pipeline PG-09224 by the 5th regulation valve and mixes with other CO product gas；
Pump-down, evacuates gas and enters before the second pump after cooler cooling by the second sequencing valve, enter the second vavuum pump,
During evacuation, maximum vacuum is up to-0.08MPa.Pipeline PG-is entered as product gas from the second vavuum pump gas out
09224。
The above, be only preferred embodiment of the present utility model, not the utility model is made any in form
Restriction, although the utility model is disclosed above with preferred embodiment, but is not limited to the utility model, any ripe
Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when in the technology of available the disclosure above
Hold and make a little change or be modified to the Equivalent embodiments of equivalent variations, as long as being without departing from technical solutions of the utility model
Holding, according to technical spirit of the present utility model, within spirit of the present utility model and principle, that is made above example appoints
What simple amendment, equivalent and improvement etc., within all still falling within the protection domain of technical solutions of the utility model.
Claims (1)
1. the device reclaiming CO for acetate acid tail gas, it is characterised in that include interconnective wash for methyl alcohol device,
Device for PSA-1 workshop section, the device for PSA-2 workshop section and the device for PSA-3 workshop section, wherein for PSA-2 work
Section device by with the 5th regulation valve pipeline be connected with PSA-3 workshop section, for PSA-2 workshop section device pass through with
The junction that the pipeline of the 5th regulation valve is connected with PSA-3 workshop section is connected with regeneration gas cooler by pipeline, and regenerates
Gas Cooler is connected with the device for PSA-1 workshop section by pipeline；
The device wherein washed for methyl alcohol includes the first blending tank and Methanol Wash Column, described first blending tank and Methanol Wash Column
Between be connected by pipeline, be connected by pipeline between described Methanol Wash Column and separator；
The described device for PSA-1 workshop section includes separator, the first regulation valve, the adsorption tower of PSA-1 workshop section, purification gas buffering
Tank, the 4th regulation valve and purification hot-air heater, described separator by regulating the pipeline suction with PSA-1 workshop section of valve with first
Attached tower is connected, and the adsorption tower of described PSA-1 workshop section is connected with purifying gas surge tank by pipeline, described purification gas surge tank
By being connected with purifying hot-air heater with the pipeline of the 4th regulation valve, described purification hot-air heater passes through the same PSA-2 of pipeline
The adsorption tower of workshop section is connected；
The described device for PSA-2 workshop section includes the adsorption tower of PSA-2 workshop section, and the adsorption tower of described PSA-2 workshop section is by pipe
Road is connected with the device for PSA-1 workshop section, and the adsorption tower of described PSA-2 workshop section is same by the pipeline with the first sequencing valve
Downflow releasing tank is connected, described downflow releasing tank by being connected with putting useless tank with the pipeline of the second sequencing valve, described in put useless tank and pass through
With second regulation valve pipeline be connected with downflow releasing tank, described in put useless tank by with second regulation valve the same downflow releasing tank of pipeline
The joint portion being connected is connected with the device for PSA-3 workshop section by pipeline, described in put useless tank by with the 3rd program control
The pipeline of valve is connected with CO surge tank, and described CO surge tank is by the pipeline with the second regulation valve with the 3rd regulation valve
Pipeline be connected with pipeline PG-09224；Pipeline further with the second sequencing valve is connected with cooler before the first pump, and
Before first pump, cooler is connected with the first vavuum pump, and described first vavuum pump is connected with pipeline；The second of described mixing CO
Blending tank is also connected with for the device of PSA-3 workshop section with the device for PSA-2 workshop section, described second blending tank also by
Pipeline is connected with cooler before compression, and before described compression, cooler is by the same air blast of pipeline, the first cooler, flowmeter and oil removing
Device forms a path, and before compression, cooler is connected with compressor also by the pipeline with the 4th regulation valve；Described oil expeller
Also it is connected with the device for PSA-3 workshop section with the device for PSA-2 workshop section；
Described put useless tank by the joint portion that is connected with downflow releasing tank with the pipeline of the second regulation valve by pipeline with PSA-3 work
The adsorption tower of section is connected, and the adsorption tower of described PSA-3 workshop section is by being connected with pipeline with the pipeline of the 5th regulation valve；Separately
Pipeline with the second sequencing valve is connected with cooler before the second pump outward, and before described second pump, cooler is by pipeline same second
Vavuum pump is connected, and described second vavuum pump is connected with pipeline by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620177099.7U CN205392104U (en) | 2016-03-08 | 2016-03-08 | CO's device is retrieved to acetic acid tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620177099.7U CN205392104U (en) | 2016-03-08 | 2016-03-08 | CO's device is retrieved to acetic acid tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205392104U true CN205392104U (en) | 2016-07-27 |
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ID=56442191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620177099.7U Active CN205392104U (en) | 2016-03-08 | 2016-03-08 | CO's device is retrieved to acetic acid tail gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN205392104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105617817A (en) * | 2016-03-08 | 2016-06-01 | 镇江东辰环保科技工贸有限公司 | Device and method for recycling CO from acetic acid tail gas |
-
2016
- 2016-03-08 CN CN201620177099.7U patent/CN205392104U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105617817A (en) * | 2016-03-08 | 2016-06-01 | 镇江东辰环保科技工贸有限公司 | Device and method for recycling CO from acetic acid tail gas |
| CN105617817B (en) * | 2016-03-08 | 2018-06-12 | 镇江东辰环保科技工贸有限公司 | For the device and method of acetate acid tail gas recycling CO |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200108 Address after: 212000 room 106, C1 District, longyinfang commercial street, Jingkou District, Zhenjiang City, Jiangsu Province Co-patentee after: Jiangsu Sopo Chemical Co.,Ltd. Patentee after: ZHENJIANG DONGCHEN ENVIRONMENTAL PROTECTION TECHNOLOGY INDUSTRY AND TRADE CO., LTD. Address before: 212000 Zhenjiang City, Jiangsu province Jingkou District No. 20 South Gate Street Co-patentee before: Jiangsu Soap (Group) Co., Ltd. Patentee before: ZHENJIANG DONGCHEN ENVIRONMENTAL PROTECTION TECHNOLOGY INDUSTRY AND TRADE CO., LTD. |
|
| TR01 | Transfer of patent right |