CN207478548U - The combination unit of dissolvent residual in a kind of reduction tail gas - Google Patents
The combination unit of dissolvent residual in a kind of reduction tail gas Download PDFInfo
- Publication number
- CN207478548U CN207478548U CN201721274530.0U CN201721274530U CN207478548U CN 207478548 U CN207478548 U CN 207478548U CN 201721274530 U CN201721274530 U CN 201721274530U CN 207478548 U CN207478548 U CN 207478548U
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- Prior art keywords
- tail gas
- condenser
- combination unit
- absorption tower
- dissolvent residual
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Abstract
The utility model discloses a kind of combination units for reducing dissolvent residual in tail gas, including reaction kettle, tail gas absorber and absorption flow container, the combination unit further include condenser, the inlet and outlet of the condenser connect respectively with reaction kettle, tail gas absorber, the liquid outlet connection liquid collecting tank of condenser.The combination unit of dissolvent residual in a kind of reduction tail gas of the utility model, condenser is introduced on the basis of common device for absorbing tail gas, condenser makes tail gas cool to 0 DEG C or so into the chilled water of low temperature, liquid is condensed into rapidly by the solvent that tail gas is carried secretly, is collected in liquid collecting tank.On the one hand the dissolvent residual in tail gas is greatly reduced in the device, improve the quality of tail gas absorption liquid, on the other hand can reuse recovered solvent, reduce cost, economize on resources.
Description
Technical field
The utility model belongs to technical field of chemical, is filled more particularly to a kind of combination for reducing solvent in tail gas
It puts.
Background technology
The chemical reactions such as chlorination reaction, acyl chloride reaction generally carry out in a solvent, and common solvent has benzene, toluene, two
Chloroethanes, Benzene Chloride, o-dichlorohenzene etc. can generate corresponding tail gas, such as hydrogen chloride, sulfur dioxide after reaction.Due to reaction
Temperature is higher, and the volatility of solvent itself improves, and causes easily to carry the solvent of volatilization in tail gas secretly, influences the matter of tail gas absorption liquid
Amount.Therefore, the utility model is based on disadvantages described above, chlorination reaction device is improved, to ensure the quality of tail gas absorption liquid.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of combination unit for reducing solvent in tail gas, the device
Condenser is introduced, the solvent that tail gas is carried secretly liquid can be condensed into rapidly, reduce the residual of solvent in absorbing liquid, significantly carry
The high quality of tail gas absorption liquid.
The utility model is achieved through the following technical solutions：
The combination unit of dissolvent residual in a kind of reduction tail gas, including reaction kettle, tail gas absorber and absorption flow container are described
Combination unit further includes condenser, and the inlet and outlet of the condenser connect respectively with reaction kettle, tail gas absorber, and condenser goes out
Liquid mouth connects liquid collecting tank.
The further improvement project of the utility model is that the tail gas absorber is water absorption tower.
The further improvement project of the utility model is that the tail gas absorber is at least provided with 2, and respectively falling liquid film water is inhaled
It receives tower and filler water absorption tower, the absorption tower import of falling liquid film water is connect with condenser, outlet is connect with filler water absorption tower.
The further improvement project of the utility model is, the absorption flow container at least provided with 2, respectively with the falling liquid film water
Absorption tower is connected with the bottom on filler water absorption tower.It absorbs flow container and is used for the predominant gas that absorbing reaction generates.
The further improvement project of the utility model is, the condenser is graphite condenser, outer circulation freezing temperature
Spend is -5 DEG C ~ -10 DEG C.
The utility model compared with prior art, has the following advantages that：
The combination unit of dissolvent residual in a kind of reduction tail gas of the utility model, on the basis of common device for absorbing tail gas
Upper introducing condenser, condenser make tail gas cool to 0 DEG C or so, the solvent carried secretly by tail gas is cold rapidly into the chilled water of low temperature
Liquid is congealed into, is collected in liquid collecting tank.On the one hand the solvent in tail gas is greatly reduced in the device, improve the product of tail gas absorption liquid
On the other hand recovered solvent can be reused, reduce cost, economized on resources by matter.
Description of the drawings
Fig. 1 combines the unit structure diagram for the utility model.
Fig. 2 is combination unit structure diagram before improving.
Serial number in figure, 1- reaction kettles, 2- condensers, 3- film-falling absorption towers, 4- packed absorbers, 5- liquid collecting tanks, 6- absorb
Flow container.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
As shown in Figure 1, in a kind of reduction tail gas of the utility model dissolvent residual combination unit, including reaction kettle 1, tail
Aspiration tower and absorb flow container 6, the combination unit further includes condenser 2, the inlet and outlet of the condenser 2 respectively with reaction kettle
1st, tail gas absorber connects, the liquid outlet connection liquid collecting tank 5 of condenser 2.
In the present embodiment, the tail gas absorber is water absorption tower, and tail gas absorber is at least provided with 2, respectively falling liquid film
Water absorption tower 3 and filler water absorption tower 4,3 import of falling liquid film water absorption tower are connect with condenser 2, and outlet connects with filler water absorption tower 4
It connects.
In the present embodiment, the absorption flow container 6 is inhaled at least provided with 2 with the falling liquid film water absorption tower 3 and filler water respectively
Receive the bottom connection of tower 4.
In the present embodiment, the condenser 2 is graphite condenser, and outer circulation chilled water temperature is -5 DEG C ~ -10 DEG C.
Dichloroethanes is used to be absorbed as example as solvent, generation hydrogen chloride gas, using water using chlorination reaction：Reaction kettle 1
Middle progress chlorination reaction generates hydrogen chloride gas, and carry certain dichloroethane solvent secretly, and hydrogen chloride gas is cold by condenser 2
After solidifying, a large amount of hydrogen chloride gas cool down rapidly, and the dichloroethane solvent carried secretly in hydrogen chloride is condensed into rapidly liquid, are collected in collection
In flow container 5.Compared with the combination unit before improvement shown in Fig. 2, enter in absorption tower by the gas that condensation process is crossed and carry out
Hydrochloric acid is produced in water absorption, can be improved hydrochloric acid purity and be reached more than 30%.
Above-described is only the preferred embodiment of the utility model, it is noted that for the ordinary skill of this field
For personnel, under the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (5)
1. a kind of combination unit for reducing dissolvent residual in tail gas, including reaction kettle（1）, tail gas absorber and absorb flow container（6）,
It is characterized in that：The combination unit further includes condenser（2）, the condenser（2）Inlet and outlet respectively with reaction kettle（1）、
Tail gas absorber connects, condenser（2）Liquid outlet connection liquid collecting tank（5）.
2. a kind of combination unit for reducing dissolvent residual in tail gas according to claim 1, it is characterised in that：The tail gas
Absorption tower is water absorption tower.
3. a kind of combination unit for reducing dissolvent residual in tail gas according to claim 1, it is characterised in that：The tail gas
Absorption tower is at least provided with 2, respectively falling liquid film water absorption tower（3）With filler water absorption tower（4）, falling liquid film water absorption tower（3）Import
With condenser（2）Connection, outlet and filler water absorption tower（4）Connection.
4. a kind of combination unit for reducing dissolvent residual in tail gas according to claim 3, it is characterised in that：The absorption
Flow container（6）At least provided with 2, respectively with the falling liquid film water absorption tower（3）With filler water absorption tower（4）Bottom connection.
5. a kind of combination unit for reducing dissolvent residual in tail gas according to claim 1, it is characterised in that：The condensation
Device（2）For graphite condenser, outer circulation chilled water temperature is -5 DEG C ~ -10 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721274530.0U CN207478548U (en) | 2017-09-30 | 2017-09-30 | The combination unit of dissolvent residual in a kind of reduction tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721274530.0U CN207478548U (en) | 2017-09-30 | 2017-09-30 | The combination unit of dissolvent residual in a kind of reduction tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207478548U true CN207478548U (en) | 2018-06-12 |
Family
ID=62479527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721274530.0U Active CN207478548U (en) | 2017-09-30 | 2017-09-30 | The combination unit of dissolvent residual in a kind of reduction tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207478548U (en) |
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2017
- 2017-09-30 CN CN201721274530.0U patent/CN207478548U/en active Active
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