CN206508748U - A kind of diethyl phosphite produces the retracting device of hydrogen chloride in tail gas - Google Patents
A kind of diethyl phosphite produces the retracting device of hydrogen chloride in tail gas Download PDFInfo
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- CN206508748U CN206508748U CN201621473302.1U CN201621473302U CN206508748U CN 206508748 U CN206508748 U CN 206508748U CN 201621473302 U CN201621473302 U CN 201621473302U CN 206508748 U CN206508748 U CN 206508748U
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- absorption tower
- condenser
- connects
- discharging opening
- gas
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- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses the retracting device that a kind of diethyl phosphite produces hydrogen chloride in tail gas, it includes condenser, first absorption tower, second absorption tower, 3rd absorption tower, alkali groove and hydrochloric acid tank, the condenser is tubular heat exchanger, the gas vent of condenser connects the first charging aperture on the first absorption tower, the first discharging opening connection hydrochloric acid tank on the first absorption tower, the first row gas port on the first absorption tower connects the second charging aperture of second absorption tower, first discharging opening of second absorption tower connects the first absorbing liquid import on the first absorption tower, the second exhaust port of second absorption tower connects the 3rd charging aperture on the 3rd absorption tower, 3rd discharging opening on the 3rd absorption tower connects the second absorbing liquid import of second absorption tower, the 3rd exhaust outlet connection alkali groove on the 3rd absorption tower.The utility model can effectively improve the absorptivity of hydrogen chloride, it is to avoid the outer row of hydrogen chloride gas.
Description
Technical field
The utility model is related to a kind of retracting device of hydrogen chloride, is applied particularly to chlorine in diethyl phosphite production tail gas
Change the recovery of hydrogen.
Background technology
A certain amount of hydrogen chloride gas can be produced in the production process of diethyl phosphite, to this partial oxidation hydrogen
Generally it is to make hydrochloric acid to carry out reuse, is used as the raw material sources of production chloroethanes, but current hydrogen chloride absorption device
Fairly simple, the rate of recovery of hydrogen chloride is relatively low, and substantial amounts of hydrogen chloride is disposed off as waste gas, and this not only adds and is produced into
This, can also cause certain environmental pollution.
Utility model content
The problem of relatively low for the rate of recovery of the above-mentioned hydrogen chloride of solution, the utility model proposes a kind of recovery of hydrogen chloride dress
Put, the rate of recovery of hydrogen chloride can be effectively improved, specific technical scheme is as follows：
A kind of diethyl phosphite produces the retracting device of hydrogen chloride in tail gas, and it includes condenser, the first absorption tower, the
Two absorption towers, the 3rd absorption tower, alkali groove and hydrochloric acid tank, the condenser are tubular heat exchanger, are provided with condenser cold
Matchmaker's import, refrigerant exit, material inlet, gas vent and liquid outlet, first absorption tower include first charging aperture, first
Discharging opening, first row gas port and the first absorbing liquid import, the second absorption tower include second charging aperture, the second discharging opening, the
Two exhaust outlets and the second absorbing liquid import, the 3rd absorption tower include the 3rd charging aperture, the 3rd discharging opening, the 3rd exhaust outlet and
3rd absorbing liquid import；
Wherein, the gas vent of condenser connects the first charging aperture on the first absorption tower, first discharging on the first absorption tower
Mouth connection hydrochloric acid tank, the first row gas port on the first absorption tower connects the second charging aperture of second absorption tower, second absorption tower
First discharging opening connects the first absorbing liquid import on the first absorption tower, and the second exhaust port of second absorption tower connects the 3rd absorption tower
The 3rd charging aperture, the 3rd discharging opening on the 3rd absorption tower connects the second absorbing liquid import of second absorption tower, the 3rd absorption tower
The 3rd exhaust outlet connection alkali groove.
Further, in addition to exhaust gas fan, the exhaust gas fan be connected to the 3rd absorption tower the 3rd exhaust outlet and alkali groove it
Between.Set up after exhaust gas fan, the alkaline reaction for leading to unabsorbed hydrogen chloride in alkali groove, with alkali groove can be forced.
Further, first absorption tower, second absorption tower and the 3rd absorption tower are film-falling absorption tower.Film-falling absorption tower
With good gas adsorption effect, it is suitable for the absorption of hydrogen chloride gas.
Further, the condenser is graphite-pipe condenser.Graphite-pipe condenser has stronger corrosion resistance, is saliferous
The preferred condensing plant of acid.
In the utility model, there is provided three absorption towers, and three absorption towers are used in series, form three-level absorption tower
Device, when the utility model is run, the hydrochloric acid produced by the absorption tower of rear stage turns into the absorbing liquid on previous stage absorption tower, preceding
Unabsorbed hydrogen chloride is entered in first grade absorption tower continues to be absorbed in rear stage absorption tower, by the suction on three-level absorption tower
After receipts, it is not only able to effectively improve the absorptivity of hydrogen chloride, the hydrogen chloride in making the gas that is come out from afterbody absorption tower
Content very low and last tail gas be fed in alkali groove, reacted with the alkali lye in alkali groove, it is to avoid chlorination
The outer row of hydrogen.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the present utility model.
Embodiment
Embodiment 1：
Refering to Fig. 1, a kind of diethyl phosphite produces the retracting device of hydrogen chloride in tail gas, and it includes condenser 10, the
One absorption tower 20, second absorption tower 30, the 3rd absorption tower 40, alkali groove 60 and hydrochloric acid tank 70, the condenser 10 change for tubulation
Hot device, is provided with refrigerant import 14, refrigerant exit 15, material inlet 11, gas vent 13 and liquid outlet on condenser 10
12, first absorption tower 20 includes first charging aperture 21, the first discharging opening 22, the absorbing liquid import of first row gas port 23 and first
24, the second absorption tower 30 includes second charging aperture 31, the second discharging opening 32, the absorbing liquid import of second exhaust port 33 and second
34, the 3rd absorption tower 40 includes the 3rd charging aperture 41, the 3rd discharging opening 42, the 3rd exhaust outlet 43 and the 3rd absorbing liquid import
44；
Wherein, the gas vent 13 of condenser 10 connects the first charging aperture 21 on the first absorption tower 20, the first absorption tower 20
The first discharging opening 22 connection hydrochloric acid tank 70, the first absorption tower 20 first row gas port 23 connection second absorption tower 30 second
Charging aperture 31, the first discharging opening 32 of second absorption tower 30 connects the first absorbing liquid import 24 on the first absorption tower 20, and second inhales
The second exhaust port 33 for receiving tower 30 connects the 3rd charging aperture 41 on the 3rd absorption tower 40, the 3rd discharging opening 42 on the 3rd absorption tower 40
Connect the second absorbing liquid import 34 of second absorption tower 30, the 3rd exhaust outlet 43 connection alkali groove 60 on the 3rd absorption tower 40.
In the present embodiment, the first absorption tower, second absorption tower and the 3rd absorption tower are film-falling absorption tower.Condenser is
Graphite-pipe condenser.
In the present embodiment, in addition to exhaust gas fan 50, the exhaust gas fan 50 is connected to the 3rd exhaust on the 3rd absorption tower 40
Between mouth 43 and alkali groove 60.
When the present embodiment is run, cooling water is passed through in condenser first, and alkali lye is contained in alkali groove, then will be in Asia
The material inlet 15 of the condensed device 10 of depickling gas produced by p diethylaminobenzoic acid ester production process enters the tube side of condenser,
Liquid is discharged from liquid outlet produced by after condensation, and the main component of the liquid is chloroethanes, and this part chloroethanes is in warp
Chloroethanes product is can obtain after purified treatment.
The hydrogen chloride gas discharged from the gas vent of condenser is entered to be absorbed in the first absorption tower, is not absorbed
Gas discharged from the first row gas port 23 on the first absorption tower after enter second absorption tower 30 and proceed absorption, do not absorbed
Gas from the outlet of second exhaust port 33 enter the 3rd absorption tower 40 proceed absorption, unabsorbed gases is through waste gas
Blower fan 50 is sent in alkali groove and alkaline reaction, the last hydrogen chloride of absorption.
Feeding production water is absorbed into the chlorination in the 3rd absorption tower from the 3rd charging aperture 42 on the 3rd absorption tower 40
Hydrogen formation watery hydrochloric acid, these watery hydrochloric acid are after the 3rd discharging opening 42 discharge on the 3rd absorption tower 40, through the second absorbing liquid import 34
Enter in second absorption tower 30 and continue the hydrochloric acid of absorbing hydrogen chloride gas formation higher concentration, the hydrochloric acid of higher concentration is from second
The outlet of discharging opening 32 enters the hydrochloric acid for continuing absorbing hydrogen chloride formation high concentration in the first absorption tower 20, the hydrochloric acid of high concentration
Entered after the discharge of the first discharging opening in hydrochloric acid tank 70.
Claims (4)
1. a kind of diethyl phosphite produces the retracting device of hydrogen chloride in tail gas, it is characterised in that inhaled including condenser, first
Tower, second absorption tower, the 3rd absorption tower, alkali groove and hydrochloric acid tank are received, the condenser is tubular heat exchanger, is set on condenser
Refrigerant import, refrigerant exit, material inlet, gas vent and liquid outlet are equipped with, first absorption tower includes the first charging
Mouth, the first discharging opening, first row gas port and the first absorbing liquid import, the second absorption tower go out including second charging aperture, second
Material mouth, second exhaust port and the second absorbing liquid import, the 3rd absorption tower include the 3rd charging aperture, the 3rd discharging opening, the 3rd
Exhaust outlet and the 3rd absorbing liquid import；
Wherein, the gas vent of condenser connects the first charging aperture on the first absorption tower, and first discharging opening on the first absorption tower connects
Logical hydrochloric acid tank, the first row gas port on the first absorption tower connects the second charging aperture of second absorption tower, the first of second absorption tower
Discharging opening connects the first absorbing liquid import on the first absorption tower, and the second exhaust port of second absorption tower connects the of the 3rd absorption tower
Three charging apertures, the 3rd discharging opening on the 3rd absorption tower connects the second absorbing liquid import of second absorption tower, and the of the 3rd absorption tower
Three exhaust outlets connect alkali groove.
2. retracting device according to claim 1, it is characterised in that also including exhaust gas fan, the exhaust gas fan is connected to
Between 3rd exhaust outlet and alkali groove on the 3rd absorption tower.
3. retracting device according to claim 1, it is characterised in that first absorption tower, second absorption tower and the 3rd
Absorption tower is film-falling absorption tower.
4. retracting device according to claim 1, it is characterised in that the condenser is graphite-pipe condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621473302.1U CN206508748U (en) | 2016-12-29 | 2016-12-29 | A kind of diethyl phosphite produces the retracting device of hydrogen chloride in tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621473302.1U CN206508748U (en) | 2016-12-29 | 2016-12-29 | A kind of diethyl phosphite produces the retracting device of hydrogen chloride in tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206508748U true CN206508748U (en) | 2017-09-22 |
Family
ID=59864150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621473302.1U Expired - Fee Related CN206508748U (en) | 2016-12-29 | 2016-12-29 | A kind of diethyl phosphite produces the retracting device of hydrogen chloride in tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206508748U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173320A (en) * | 2018-10-08 | 2019-01-11 | 吴江飞乐天和电子材料有限公司 | Hydrogen chloride industrial waste gas condensed absorbent recyclable device and system |
| CN110357922A (en) * | 2019-07-03 | 2019-10-22 | 昌和化学新材料(江苏）有限公司 | The processing of triphenyl phosphite based on graphite condenser and tail gas treatment process |
-
2016
- 2016-12-29 CN CN201621473302.1U patent/CN206508748U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173320A (en) * | 2018-10-08 | 2019-01-11 | 吴江飞乐天和电子材料有限公司 | Hydrogen chloride industrial waste gas condensed absorbent recyclable device and system |
| CN109173320B (en) * | 2018-10-08 | 2020-11-17 | 吴江飞乐天和电子材料有限公司 | Hydrogen chloride industrial waste gas condensation, absorption and recovery device and system |
| CN110357922A (en) * | 2019-07-03 | 2019-10-22 | 昌和化学新材料(江苏）有限公司 | The processing of triphenyl phosphite based on graphite condenser and tail gas treatment process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20191229 |