CN208482215U - Two sections of adsorbent equipments of production of acetic acid tail gas - Google Patents
Two sections of adsorbent equipments of production of acetic acid tail gas Download PDFInfo
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- CN208482215U CN208482215U CN201820346989.5U CN201820346989U CN208482215U CN 208482215 U CN208482215 U CN 208482215U CN 201820346989 U CN201820346989 U CN 201820346989U CN 208482215 U CN208482215 U CN 208482215U
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Abstract
The utility model belongs to the production technology of industrial chemicals, the two sections of adsorbent equipments of production of acetic acid tail gas and processing method being related in a kind of production of acetic acid equipment.The device includes one section of adsorption tower and at least two 2 sections of adsorption towers；One section of absorption tower bottom is connect by one section of inlet valve with feed gas source, and top is connect by one section outlet valve and two sections of inlet valves with two sections of adsorption towers；Each two sections of adsorption towers are also connect by respective vacuum pumping valve with vacuum equipment respectively；The top of each two sections of adsorption towers is connected to intermediate storage tank by respective second stage exit valve respectively, there are two branches in the outlet of intermediate storage tank, wherein a branch is connect by dump valve with discharge line, and another branch is connect with each two sections of adsorption towers respectively by multiple lockup pressure valves.It is low that the utility model CO recycles yield height, operating cost.
Description
Technical field
The utility model belongs to the production technology of industrial chemicals, the production of acetic acid tail gas being related in a kind of production of acetic acid equipment
Two sections of adsorbent equipments.
Background technique
In the equipment for producing acetic acid as raw material using methanol and carbon monoxide, after raw material completes reaction in a kettle, contain
There is the discharge after methanol elutes acetic acid of the tail gas of a small amount of acetic acid that unstripped gas is used as to enter two-period form adsorbent equipment to contained therein
CO2 and CO adsorbed, then by treated containing a small amount of CO, CH4, H2, N2 final gas burn emptying.Secondly section
Unstripped gas adsorbs CO2 by the filler of one section of adsorption tower in formula adsorbent equipment, using the filler pair of two sections of adsorption towers
CO is discharged after being adsorbed.After handling a period of time, two stage adsorption fills out interior filler and needs regeneration treatment, and two sections are adsorbed
Tower generallys use the mode vacuumized and is regenerated and recycled the raw material that CO is re-used as production of acetic acid, and two after vacuumizing
Section adsorption tower generally requires before putting into production again and is passed through partial raw gas progress pre-loading.In this technique, it is discharged two sections
Still there are a large amount of CO to be discharged in the gas of adsorption tower, not only increase the difficulty of subsequent processing, also returns the CO of whole process
Recovery rate is lower.In addition, being regenerated for the filler in one section of adsorption tower, generally also by the way of vacuumizing, in regenerative process
A large amount of electric energy of vaccum-pumping equipment consumption, are not conducive to the reduction of production costs.
Summary of the invention
Technical problem to be solved by the utility model is to provide the low acetic acid of a kind of CO recycling yield height, operating cost
Produce two sections of adsorbent equipments of tail gas.
Two sections of adsorbent equipments of production of acetic acid tail gas of the utility model include one section of adsorption tower and at least two 2 sections of suctions
Attached tower；One section of absorption tower bottom is connect by one section of inlet valve with feed gas source, and one section outlet valve and two sections are passed through in top
Inlet valve is connect with two sections of adsorption towers；Each two sections of adsorption towers are also connect by respective vacuum pumping valve with vacuum equipment respectively；
The top of each two sections of adsorption towers is connected to intermediate storage tank by respective second stage exit valve respectively, and the outlet of intermediate storage tank has two
Branch, wherein a branch is connect by dump valve with discharge line, another branch pass through multiple lockup pressure valves respectively with
Each two sections of adsorption towers connection.
Further, one section of adsorption tower at least there are two, dump valve and discharge pipe outside intermediate storage tank outlet
Road is connect with each one section of adsorption tower respectively by multiple flushing valves, each one section of adsorption tower is put by what is respectively connected respectively
Empty valve is connect with blowdown piping.
The beneficial effects of the utility model are embodied in: 1, the exhaust gas that adsorption process can be discharged introduces two sections of adsorption towers
Pre-loading process can improve the CO of entire adsorbent equipment using remaining CO in the negative pressure recycling exhaust gas after vacuumizing
Yield；2, the exhaust gas of adsorption process discharge is made to the flushing regeneration gas of one section of adsorption tower, the pumping eliminated in conventional method is true
Null device and vacuum, have saved electric energy, also reduce equipment cost, while can also recycle in a part of exhaust gas
CO is conducive to improve CO yield.
Detailed description of the invention
Fig. 1 is the systematic schematic diagram of the utility model embodiment.
Specific embodiment
Embodiment:
As shown, two sections of adsorbent equipments of the production of acetic acid tail gas of the utility model embodiment include one section of adsorption tower 1
With at least two 2 sections of adsorption towers 2；One section of absorption tower bottom is connect by one section of inlet valve 11 with feed gas source, and top passes through one
Section outlet valve 12 and two sections of inlet valves 21 are connect with two sections of adsorption towers 2；Each two sections of adsorption towers 2 are also taken out very by respective respectively
Empty valve 23 is connect with vacuum equipment；During the top of each two sections of adsorption towers 2 is connected to by respective second stage exit valve 22 respectively
Between storage tank 3, there are two branches in the outlet of intermediate storage tank, another wherein a branch is connect by dump valve 31 with discharge line
Branch is connect with each two sections of adsorption towers respectively by multiple lockup pressure valves 24.One section of adsorption tower 1 also at least there are two, it is intermediate
Dump valve 31 and discharge line outside the outlet of storage tank 3 are connect with each one section of adsorption tower 1 respectively by multiple flushing valves 13, each
A one section of adsorption tower is connect by the blow valve 14 respectively connected with blowdown piping respectively.
With the above-mentioned apparatus Dichlorodiphenyl Acetate method that is handled of production tail gas the following steps are included:
It is prepared in process of acetic acid using carbon monoxide and methanol as raw material by carbongl group synthesis reaction, reacts the tail of generation
Gas enters above-mentioned two sections of adsorbent equipments of production of acetic acid tail gas as unstripped gas after removing remains acetic acid；Unstripped gas gas warp
Cross one section of adsorption tower 1 conventional fillers CO2 is adsorbed after enter two sections of adsorption towers 2；
Multiple two sections of adsorption towers 2 are divided into two groups, wherein one group be in CO adsorption process when another group in two sections of fillers again
Raw process, the CO adsorption process and two sections of filler regenerative processes of two groups of two sections of adsorption towers are alternately；
CO adsorption process is to carry out the process of CO absorption to the gas for carrying out one section of adsorption tower by conventional fillers；In this mistake
The corresponding two sections of inlet valves 21 of two sections of adsorption towers of journey, second stage exit valve 22, dump valve 31 are opened, vacuum pumping valve 23 and pre-loading
Valve 24 is closed；Two sections of adsorption towers during this adsorb CO by filler；Gas after two sections of adsorption towers adsorb
It is discharged after sending to intermediate storage tank 3；
Two sections of filler regenerative processes are that two sections of absorption tower packings of adsorption saturation regenerate with the process of simultaneously pre-loading；Place
Two sections of inlet valves 21, second stage exit valve 22 and lockup pressure valve 24 are first closed in two sections of adsorption towers of this process, opens vacuum pumping valve
23, two sections of adsorption towers vacuumize and extract CO and regeneration filler；After completing filler regeneration, vacuum pumping valve 23 is closed, is opened
Lockup pressure valve 24 makes the gas in intermediate storage tank enter two sections of adsorption towers and carries out pre-loading, reenters CO after pre-loading
Adsorption process.Due to carrying out pre-loading using exhaust gas, remaining CO in exhaust gas can be recycled, the CO of entire adsorbent equipment is improved
Yield.
In the utility model embodiment, one section of adsorption tower 1 also has multiple, and is divided into two groups, at one group of one section of adsorption tower
When CO2 adsorption process, another group of one section of adsorption tower is in one section of filler regenerative process, the CO2 absorption of two groups of one section of adsorption towers
Process and one section of filler regenerative process are alternately；
CO2 adsorption process is to carry out the process of Adsorption to the CO2 in unstripped gas by conventional fillers；In this process
One section of adsorption tower one section of inlet valve 11 and one section outlet valve 12 open, flushing valve 13 and blow valve 14 are closed；Unstripped gas warp
Enter two sections of adsorption towers after Adsorption CO2；
One section of filler regenerative process is to be rinsed regenerated process to one section of filler by gas；One in this process
The one section of inlet valve 11 and one section outlet valve 12 of section adsorption tower are closed, and flushing valve 13 and blow valve 14 are opened, and are made from intermediate storage
Tank is discharged into after gas is rinsed regeneration to one section of filler, then is discharged through blow valve.Since exhaust gas is made one section of adsorption tower
Regeneration gas is rinsed, vaccum-pumping equipment and vacuum is eliminated, has saved electric energy, also reduce equipment cost, also favorably
In raising CO yield.
Claims (2)
1. a kind of two sections of adsorbent equipments of production of acetic acid tail gas include one section of adsorption tower (1) and at least two 2 sections of adsorption towers
(2)；One section of absorption tower bottom is connect by one section of inlet valve (11) with feed gas source, and one section outlet valve (12) and two are passed through in top
Section inlet valve (21) is connect with two sections of adsorption towers (2)；Each two sections of adsorption towers (2) also pass through respective vacuum pumping valve (23) respectively
It is connect with vacuum equipment；It is characterized in that: respective second stage exit valve (22) is passed through even in the top of each two sections of adsorption towers (2) respectively
It is connected to intermediate storage tank (3), there are two branches in the outlet of intermediate storage tank, wherein a branch passes through dump valve (31) and discharge line
Connection, another branch are connect with each two sections of adsorption towers (2) respectively by multiple lockup pressure valves (24).
2. two sections of adsorbent equipments of production of acetic acid tail gas according to claim 1, it is characterized in that: one section of adsorption tower (1) is also extremely
There are two few, dump valve (31) and discharge line outside intermediate storage tank (3) outlet pass through multiple flushing valves (13) respectively with it is each
One section of adsorption tower (1) connection, each one section of adsorption tower are connect by the blow valve (14) respectively connected with blowdown piping respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820346989.5U CN208482215U (en) | 2018-03-14 | 2018-03-14 | Two sections of adsorbent equipments of production of acetic acid tail gas |
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| CN201820346989.5U CN208482215U (en) | 2018-03-14 | 2018-03-14 | Two sections of adsorbent equipments of production of acetic acid tail gas |
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| CN208482215U true CN208482215U (en) | 2019-02-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108339368A (en) * | 2018-03-14 | 2018-07-31 | 镇江东辰环保科技工贸有限公司 | Two sections of adsorbent equipments of production of acetic acid tail gas and processing method |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108339368A (en) * | 2018-03-14 | 2018-07-31 | 镇江东辰环保科技工贸有限公司 | Two sections of adsorbent equipments of production of acetic acid tail gas and processing method |
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