CN207056248U - A kind of chloro-propanoyl chloride device for recovering tail gas - Google Patents
A kind of chloro-propanoyl chloride device for recovering tail gas Download PDFInfo
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- CN207056248U CN207056248U CN201720952620.4U CN201720952620U CN207056248U CN 207056248 U CN207056248 U CN 207056248U CN 201720952620 U CN201720952620 U CN 201720952620U CN 207056248 U CN207056248 U CN 207056248U
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- hydrochloric acid
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Abstract
The utility model proposes a kind of chloro-propanoyl chloride device for recovering tail gas, including acylation reaction device, acylated distilling apparatus, chlorination reaction device, chlorinated distillation device and absorption by Hydrochloric Acid device, acylation reaction device and acylated distilling apparatus are in parallel, chlorination reaction device and chlorinated distillation device are in parallel, absorption by Hydrochloric Acid device includes absorption by Hydrochloric Acid tank, one-level absorption by Hydrochloric Acid tank and two level absorption by Hydrochloric Acid tank, acylation reaction device and acylated distilling apparatus are connected with absorption by Hydrochloric Acid tank respectively, chlorination reaction device and chlorinated distillation device are connected with one-level absorption by Hydrochloric Acid tank respectively, one-level absorption by Hydrochloric Acid tank is connected with two level absorption by Hydrochloric Acid tank.The device makes final hydrogen chloride gas turn into purer aqueous hydrochloric acid solution after water absorbs, and can effectively reduce consuming and solving to reclaim the difficult situation of HCl treatment in chloro-propanoyl chloride product for other product hydrochloric acid.
Description
Technical field
The utility model belongs to field of chemical equipment, more particularly to a kind of chloro-propanoyl chloride device for recovering tail gas.
Background technology
At present, chloro-propanoyl chloride respectively walks reaction and the tail gas recycle of distillation is uniformly recycled, the thing so reclaimed
Main Ingredients and Appearance is hydrochloric acid in material, but contains substantial amounts of organic impurities, includes chloro-propanoyl chloride, propionic acid, propionyl chloride etc..Its shortcoming ratio
It is more apparent：1. product yield is low；2. it is more to reclaim hydrochloric acid impurity, can not reuse, processing is difficult.This is mainly due to condensation effect
Caused by deficiency causes feed separation effect bad.In the acylation reaction of chloro-propanoyl chloride, chlorination reaction, acylated distillation and chlorine
Change in still-process and gas be present, it is necessary to condense recovery organic gas, existing mixed condenser causes organic gas to reclaim
Rate deficiency, organic gas, which enters in absorption by Hydrochloric Acid tank, turns into organic impurities, and the processing of this part hydrochloric acid has in addition with regard to relatively difficult
The loss of machine gas causes reaction raw materials consumption height, product yield to decline.
Utility model content
The utility model proposes a kind of chloro-propanoyl chloride device for recovering tail gas, solve product yield in the prior art it is low with
And reclaim the problem of hydrochloric acid impurity is more.
What the technical solution of the utility model was realized in：A kind of chloro-propanoyl chloride device for recovering tail gas, including acylation
Reaction unit, acylated distilling apparatus, chlorination reaction device, chlorinated distillation device and absorption by Hydrochloric Acid device, the acylation reaction dress
Put, the chlorination reaction device and chlorinated distillation device parallel connection in parallel with the acylated distilling apparatus, the absorption by Hydrochloric Acid
Device includes absorption by Hydrochloric Acid tank, one-level absorption by Hydrochloric Acid tank and two level absorption by Hydrochloric Acid tank, the acylation reaction device and the acylation
Distilling apparatus is connected with the absorption by Hydrochloric Acid tank respectively, the chlorination reaction device and the chlorinated distillation device respectively with it is described
One-level absorption by Hydrochloric Acid tank is connected, and the one-level absorption by Hydrochloric Acid tank is connected with the two level absorption by Hydrochloric Acid tank.
As a preferred embodiment, the acylation reaction device includes acylation reaction tank, the acylation reaction tank with
Secondary condenser connects, two acylation reaction tanks access acylation reaction condenser in parallel.
As a preferred embodiment, the acylated distilling apparatus includes acylated alembic, on the acylated alembic
Provided with acylated destilling tower, the acylated destilling tower is connected with the secondary condenser, two acylated alembic accesses in parallel
Acylated distiller condenser.
As a preferred embodiment, the chlorination reaction device includes chlorination reaction tank, the chlorination reaction tank with
The secondary condenser connection, two chlorination reaction tanks access chlorination reaction condenser in parallel.
As a preferred embodiment, the chlorinated distillation device includes chlorinated distillation tank, on the chlorinated distillation tank
Provided with chlorinated distillation tower, the chlorinated distillation tower is connected with the secondary condenser, the access in parallel of two chlorinated distillation tanks
Chlorinated distillation condenser.
As a preferred embodiment, the acylation reaction condenser and acylated distiller condenser access institute in parallel
State absorption by Hydrochloric Acid tank.
As a preferred embodiment, the chlorination reaction condenser and chlorinated distillation condenser access institute in parallel
State one-level absorption by Hydrochloric Acid tank.
After employing above-mentioned technical proposal, the beneficial effects of the utility model are：In acylation reaction, chlorination reaction, acylation
Distillation and chlorinated distillation originally on the basis of respective condensing reflux, carried out the second level or the condensation separation of second and third grade respectively,
Final hydrogen chloride gas turns into purer aqueous hydrochloric acid solution after water absorbs, and this part aqueous hydrochloric acid solution can be in other productions
Used in product, can effectively reduce the consumption of other product hydrochloric acid and solve recovery HCl treatment in chloro-propanoyl chloride product and be stranded
Difficult situation.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall structure diagram of the utility model chloro-propanoyl chloride device for recovering tail gas.
In figure, 1- absorption by Hydrochloric Acid tanks；2- one-level absorption by Hydrochloric Acid tanks；3- two level absorption by Hydrochloric Acid tanks；4- acylation reaction tanks；5- bis-
Level condenser；6- acylation reaction condensers；7- is acylated alembic；8- is acylated destilling tower；9- is acylated distiller condenser；10- chlorinations
Retort；11- chlorination reaction condensers；12- chlorinated distillation tanks；13- chlorinated distillation towers；14- chlorinated distillation condensers.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Embodiment：
As shown in figure 1, a kind of chloro-propanoyl chloride device for recovering tail gas, including acylation reaction device, acylated distilling apparatus, chlorine
Change reaction unit, chlorinated distillation device and absorption by Hydrochloric Acid device, acylation reaction device and acylated distilling apparatus are in parallel, chlorination reaction
Device and chlorinated distillation device are in parallel, and absorption by Hydrochloric Acid device includes absorption by Hydrochloric Acid tank 1, one-level absorption by Hydrochloric Acid tank 2 and two grade hydrochloric acids
Tourie 3, acylation reaction device and acylated distilling apparatus are connected with absorption by Hydrochloric Acid tank 1 respectively, and chlorination reaction device and chlorination are steamed
Distillation unit is connected with one-level absorption by Hydrochloric Acid tank 2 respectively, and one-level absorption by Hydrochloric Acid tank 2 is connected with two level absorption by Hydrochloric Acid tank 3, acylation reaction
Device includes acylation reaction tank 4, and acylation reaction tank 4 is connected with secondary condenser 5, and the access in parallel of two acylation reaction tanks 4 is acylated
Condenser 6 is reacted, acylated distilling apparatus includes acylated alembic 7, and acylated alembic 7 is provided with acylated destilling tower 8, acylated distillation
Tower 8 is connected with secondary condenser 5, and two acylated distiller condensers 9 of the acylated access in parallel of alembic 7, chlorination reaction device includes
Chlorination reaction tank 10, chlorination reaction tank 10 are connected with secondary condenser 5, and two chlorination reaction tanks 10 access chlorination reaction in parallel is cold
Condenser 11, chlorinated distillation device include chlorinated distillation tank 12, and chlorinated distillation tank 12 is provided with chlorinated distillation tower 13, chlorinated distillation tower
13 are connected with secondary condenser 5, two chlorinated distillation tanks 12 access chlorinated distillation condenser 14 in parallel, acylation reaction condenser 6
Absorption by Hydrochloric Acid tank 1, chlorination reaction condenser 11 and chlorinated distillation condenser 14 are accessed with the acylated parallel connection of distiller condenser 9 and are coupled
Enter one-level absorption by Hydrochloric Acid tank 2.
On the basis of acylation reaction, chlorination reaction, acylated distillation and chlorinated distillation originally respective condensing reflux, respectively
Carry out the second level or the condensation separation of second and third grade, final hydrogen chloride gas turns into purer hydrochloric acid after water absorbs
The aqueous solution, this part aqueous hydrochloric acid solution can use in other products, can effectively reduce other product hydrochloric acid consumption and
Solve to reclaim the difficult situation of HCl treatment in chloro-propanoyl chloride product.The organic liquid of recovery is respectively：1. acylation reaction is cold
The liquid main component of solidifying recovery is phosphorus trichloride, part material can be used as to consume；2. the liquid master of acylated distillation condensation recovery
It is propionyl chloride and propionic acid to want composition, can be brought into acylation reaction, reduces propionic acid consumption；3. the liquid master of chlorination reaction condensation recovery
It is propionyl chloride to want composition, and this part is brought into chlorination reaction；4. the liquid Main Ingredients and Appearance of chlorinated distillation condensation recovery is chloro third
Acyl chlorides, this part, which is brought into, carries out second distillation in next group chlorinated distillation.The utilization of these recovered materials can cut down the consumption of raw materials,
Yield is improved, reduces cost of material.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (7)
- A kind of 1. chloro-propanoyl chloride device for recovering tail gas, it is characterised in that including：Acylation reaction device, acylated distilling apparatus, chlorine Change reaction unit, chlorinated distillation device and absorption by Hydrochloric Acid device, the acylation reaction device and the acylated distilling apparatus are in parallel, The chlorination reaction device and the chlorinated distillation device are in parallel, and the absorption by Hydrochloric Acid device includes absorption by Hydrochloric Acid tank, one-level salt Sour tourie and two level absorption by Hydrochloric Acid tank, the acylation reaction device and the acylated distilling apparatus respectively with the absorption by Hydrochloric Acid Tank is connected, and the chlorination reaction device and the chlorinated distillation device are connected with the one-level absorption by Hydrochloric Acid tank respectively, and described one Grade hydrochloric acid tourie is connected with the two level absorption by Hydrochloric Acid tank.
- A kind of 2. chloro-propanoyl chloride device for recovering tail gas as claimed in claim 1, it is characterised in that：The acylation reaction device Including acylation reaction tank, the acylation reaction tank is connected with secondary condenser, and the access in parallel of two acylation reaction tanks is acylated React condenser.
- A kind of 3. chloro-propanoyl chloride device for recovering tail gas as claimed in claim 2, it is characterised in that：The acylated distilling apparatus Including acylated alembic, the acylated alembic is provided with acylated destilling tower, the acylated destilling tower and the secondary condenser Connection, two acylated distiller condensers of the acylated alembic access in parallel.
- A kind of 4. chloro-propanoyl chloride device for recovering tail gas as claimed in claim 3, it is characterised in that：The chlorination reaction device Including chlorination reaction tank, the chlorination reaction tank is connected with the secondary condenser, the access in parallel of two chlorination reaction tanks Chlorination reaction condenser.
- A kind of 5. chloro-propanoyl chloride device for recovering tail gas as claimed in claim 4, it is characterised in that：The chlorinated distillation device Including chlorinated distillation tank, the chlorinated distillation tank is provided with chlorinated distillation tower, the chlorinated distillation tower and the secondary condenser Connection, two chlorinated distillation tanks access chlorinated distillation condenser in parallel.
- A kind of 6. chloro-propanoyl chloride device for recovering tail gas as claimed in claim 3, it is characterised in that：The acylation reaction condensation Device and the acylated distiller condenser access absorption by Hydrochloric Acid tank in parallel.
- A kind of 7. chloro-propanoyl chloride device for recovering tail gas as claimed in claim 5, it is characterised in that：The chlorination reaction condensation Device and the chlorinated distillation condenser access one-level absorption by Hydrochloric Acid tank in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720952620.4U CN207056248U (en) | 2017-08-01 | 2017-08-01 | A kind of chloro-propanoyl chloride device for recovering tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720952620.4U CN207056248U (en) | 2017-08-01 | 2017-08-01 | A kind of chloro-propanoyl chloride device for recovering tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207056248U true CN207056248U (en) | 2018-03-02 |
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| CN201720952620.4U Active CN207056248U (en) | 2017-08-01 | 2017-08-01 | A kind of chloro-propanoyl chloride device for recovering tail gas |
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| CN (1) | CN207056248U (en) |
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- 2017-08-01 CN CN201720952620.4U patent/CN207056248U/en active Active
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