CN107029444A - A kind of tail gas absorbing system of recyclable organic solvent - Google Patents
A kind of tail gas absorbing system of recyclable organic solvent Download PDFInfo
- Publication number
- CN107029444A CN107029444A CN201710340444.3A CN201710340444A CN107029444A CN 107029444 A CN107029444 A CN 107029444A CN 201710340444 A CN201710340444 A CN 201710340444A CN 107029444 A CN107029444 A CN 107029444A
- Authority
- CN
- China
- Prior art keywords
- tail gas
- organic solvent
- absorbing
- condenser
- surge tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1425—Regeneration of liquid absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
Abstract
The present invention discloses a kind of tail gas absorbing system of recyclable organic solvent, including condenser one, the import of the condenser one is connected with the exhaust port of reaction unit, the condenser one is placed in the top of reaction unit, the outlet of the condenser one is connected with the import of surge tank one, the surge tank is connected once condenser two with organic solvent collecting tank, and the surge tank one, condenser two and organic solvent collecting tank are set from top to bottom successively；The liquid outlet of exhaust port and bottom of the organic solvent collecting tank provided with top, the organic solvent collecting tank exhaust port connects surge tank two through damping unit, the organic solvent collecting tank liquid outlet connects filter, the surge tank two connects multistage device for absorbing tail gas, the recovery system of the recyclable organic solvent of the present invention, has the advantages that to invest the simple and economical remarkable benefit of less, technique.
Description
Technical field
The invention belongs to technical field of chemical, and in particular to a kind of tail gas absorbing system of recyclable organic solvent.
Background technology
During modern chemical industry industrial production, there are many reaction process meeting output such as sulfur dioxide and hydrogen chloride etc.
Gas, the technology for absorbing all kinds of gases using multistage absorption tower has been widely used.
,, will be anti-usually by the way of micro-vacuum for the gas produced in course of reaction during Chemical Manufacture
Answer the gas of kettle to be introduced into absorption tower to be absorbed, in this process, due to all contain in most reaction process methanol, second
The organic solvents such as alcohol, ethyl acetate, hexamethylene, acetone or toluene, due to solvent effumability, can cause the organic molten of a part
Matchmaker is brought into absorption tower with vacuum pneumatic, is finally mixed with absorbing liquid, not only causes loss economically, can also be influenceed
The assimilation effect of absorbing liquid, and because organic solvent is brought into absorbing liquid, the later stage is to absorbing more than waste liquid using distillation processing side
Formula, therefore all kinds of organic solvents finally some can be discharged into air, cause the pollution of environment.
If the organic solvent in tail gas can be reclaimed timely, financial cost can be not only saved, while also reduction tail gas is inhaled
Receive liquid waste processing difficulty, it is to avoid environmental pollution.
The content of the invention
The purpose of the present invention is to be inhaled to carry organic solvent in tail gas during solution chemical reaction with air-flow into tail gas
The problem of receipts system, the system had the less, technique of investment simple there is provided a kind of tail gas absorbing system of recyclable organic solvent
The advantages of single and remarkable in economical benefits.
To solve problems of the prior art, the present invention is adopted the following technical scheme that：A kind of recyclable organic solvent
Tail gas absorbing system, including condenser one, the import of the condenser one is connected with the exhaust port of reaction unit, described
Condenser one is placed in the top of reaction unit, and the outlet of the condenser one is connected with the import of surge tank one, the surge tank one
Condensed device two is connected with organic solvent collecting tank, and the surge tank one, condenser two and organic solvent collecting tank are successively by upper
Set to lower；The liquid outlet of exhaust port and bottom of the organic solvent collecting tank provided with top, the organic solvent
Collecting tank exhaust port connects surge tank two through damping unit, and the organic solvent collecting tank liquid outlet connects filter,
The surge tank two connects multistage device for absorbing tail gas, and the multistage device for absorbing tail gas includes one-level device for absorbing tail gas, two
Level device for absorbing tail gas, vavuum pump surge tank and vavuum pump, the surge tank two pass sequentially through one-level device for absorbing tail gas, two grades
Device for absorbing tail gas and vavuum pump surge tank are connected with vavuum pump；The outlet of condenser one passes through pipeline and one-level tail gas absorption
Device is connected and emergency valve is provided with pipeline.
As a kind of tail gas absorbing system of recyclable organic solvent of the present invention, the one-level device for absorbing tail gas and two grades
Device for absorbing tail gas includes absorption tower, absorbs liquid storage tank and circulating pump, the absorption tower, absorption liquid storage tank and circulating pump order
Connection forms absorbing liquid loop, absorbs the top that the absorbing liquid in liquid storage tank squeezes into absorption tower through circulating pump, and from absorbing tower top
Portion is back in absorption liquid storage tank, and the gas vent at the top of the absorption tower of one-level device for absorbing tail gas connects two grades of tails by pipeline
The gas feed on the absorption tower of aspiration receiving apparatus.
As a kind of tail gas absorbing system of recyclable organic solvent of the present invention, the absorption tower is packed absorber.
As a kind of tail gas absorbing system of recyclable organic solvent of the present invention, the diameter of the surge tank one is surge tank
1-20 times of one inlet diameter.
Beneficial effect
1st, the recovery system of recyclable organic solvent of the invention, it is excellent with the investment simple and economical remarkable benefit of less, technique etc.
Point, the retracting device has not only reclaimed the organic solvent mixed in tail gas, has saved production cost, and reduces and bring absorption into
The organic solvent of liquid, extends the usage cycles of absorbing liquid, reduces the intractability of later stage absorbing liquid.
2nd, by setting condenser one to be back to most organic solvents in tail gas instead in reaction unit upper end
Answer in device, be conducive to the stabilization of production technology, save production cost.
3rd, the present invention is by surge tank one, condenser two and organic solvent collecting tank, can will be remaining organic molten in tail gas
Matchmaker is reclaimed to the full extent, and organic solvent collecting tank is by the organic solvent being collected into by being carried out after filter filtering and impurity removing
Apply mechanically or purify again.
4th, by the reduction of speed effect and the further removal of impurities of surge tank two of damping unit, what is contained in removing tail gas is a small amount of organic
Impurity, in order to avoid bring into absorbing liquid.
5th, condenser one is connected with one-level device for absorbing tail gas by pipeline and emergency valve is provided with pipeline, works as technique
When abnormal, can emergency opening emergency valve, prevent reaction unit be less than normal vacuum degree scope, it is to avoid cause gas leak technique
Security incident.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the tail gas absorbing system of recyclable organic solvent of the present invention.
Marked in figure：1st, condenser one, 2, surge tank one, 3, condenser two, 4, organic solvent collecting tank, 5, damping dress
Put, 6, surge tank two, 7, absorption tower, 8, absorb liquid storage tank, 9, circulating pump, 10, vavuum pump surge tank, 11, vavuum pump, 12, mistake
Filter, 13, emergency valve.
Embodiment
In order that technical scheme and advantage are more clearly understood, below in conjunction with drawings and Examples, to this hair
It is bright to be further elaborated.
As shown in the figure：The embodiment of the present invention provides a kind of tail gas absorbing system of recyclable organic solvent, including condenser
One 1, the import of the condenser 1 is connected with the exhaust port of reaction unit, and the condenser 1 is placed in reaction unit
Top, the outlet of the condenser 1 is connected with the import of surge tank 1, the condensed device 23 of surge tank 1 with it is organic molten
Matchmaker's collecting tank 4 is connected, and the surge tank 1, condenser 23 and organic solvent collecting tank 4 are set from top to bottom successively；It is described to have
The liquid outlet of exhaust port and bottom of the machine solvent collecting tank 4 provided with top, the exhaust emissions of organic solvent collecting tank 4
Mouth connects surge tank 26 through damping unit 5, and the liquid outlet of organic solvent collecting tank 4 connects filter 12, the surge tank
The multistage device for absorbing tail gas of 26 connections, the multistage device for absorbing tail gas includes one-level device for absorbing tail gas, two grades of tail gas absorptions
Device, vavuum pump surge tank 10 and vavuum pump 11, the surge tank 26 pass sequentially through one-level device for absorbing tail gas, two grades of tail gas
Absorption plant and vavuum pump surge tank 10 are connected with vavuum pump 11；Inhaled by pipeline with one-level tail gas the outlet of condenser 1
Receiving apparatus is connected and emergency valve 13 is provided with pipeline.
The recovery system of the recyclable organic solvent of the present invention, with investment simple and economical remarkable benefit of less, technique etc.
Advantage, the recovery system has not only reclaimed the organic solvent mixed in tail gas, has saved production cost, and reduces and bring suction into
The organic solvent of liquid is received, extends the usage cycles of absorbing liquid, the intractability of later stage absorbing liquid is reduced.By on reaction unit
End sets condenser 1 that most organic solvents in tail gas can be back in reaction unit, is conducive to production technology
It is stable, save production cost.
The present invention, can will be remaining organic molten in tail gas by surge tank 1, condenser 23 and organic solvent collecting tank 4
Matchmaker is reclaimed to the full extent, organic solvent collecting tank 4 by the organic solvent being collected into by the filtering and impurity removing of filter 12 after
Applied mechanically or purified again.By the reduction of speed effect and the further removal of impurities of surge tank 26 of damping unit 5, remove and contain in tail gas
The a small amount of organic impurities having, in order to avoid bring into absorbing liquid.Condenser 1 be connected by pipeline with one-level device for absorbing tail gas and
Emergency valve 13 is provided with pipeline, when process abnormality, can emergency opening emergency valve 13, prevent reaction unit be less than normal vacuum
Spend scope, it is to avoid cause the process safety accidents such as gas leakage.
The one-level device for absorbing tail gas and two grades of device for absorbing tail gas include absorption tower 7, absorb liquid storage tank 8 and circulation
Pump 9, the absorption tower 7, absorption liquid storage tank 8 and circulating pump 9 are linked in sequence to form absorbing liquid loop, absorb the suction in liquid storage tank 8
The top that liquid squeezes into absorption tower 7 through circulating pump 9 is received, and from the overhead reflux of absorption tower 7 to absorbing in liquid storage tank 8, one-level tail gas is inhaled
The gas vent at the top of absorption tower 7 of receiving apparatus connects the gas feed on the absorption tower 7 of two grades of device for absorbing tail gas by pipeline.
According to the difference for absorbing gas, inhomogeneous absorbing liquid, such as sulfur dioxide absorption and chlorine can be housed absorbing the inside of liquid storage tank 8
Change hydrogen, absorbing liquid can select sodium hydroxide solution, in use, can detect its pH value by PH test paper to sentence
Whether disconnected absorbing liquid needs to change.
The absorption tower 7 is packed absorber.With simple in construction, the advantages of good separating effect and small pressure drop.
The diameter of the surge tank 1 is 1-20 times of the inlet diameter of surge tank 1.The diameter of surge tank 1 is bigger, more
Reduction of speed effect can be played, the rate of recovery of organic solvent is improved.
The operation principle of the present invention：The tail gas produced in reaction unit enters condenser 1, the overwhelming majority with vacuum pneumatic
Organic solvent condensing reflux into reaction unit, on-condensible gas enters removal of impurities reduction of speed in surge tank 1, by condenser
23, remaining organic solvent is further condensed, into organic solvent collecting tank 4, and secondary on-condensible gas is from organic solvent collecting tank
4 tops are discharged, and by the further reduction of speed removal of impurities of damping unit 5 and surge tank 26, secondary fixed gas sequentially enters one-level tail gas
Absorption plant and two grades of device for absorbing tail gas are absorbed, and the clean on-condensible gas after processing is entered by vavuum pump surge tank 10
Vavuum pump 11, and be ultimately discharged into air, the wherein absorbing liquid of one-level device for absorbing tail gas and two grades of device for absorbing tail gas are from absorption
Squeezed into liquid storage tank 8 by circulating pump 9 in absorption tower 7, absorbing liquid is by fully contacting absorption with tail gas, into absorption liquid storage tank 8,
Move in circles successively.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the technical spirit pair according to the present invention without departing from technical solution of the present invention content
Any simple modification, equivalent variations and modification that above example is made, in the range of still falling within technical solution of the present invention.
Claims (4)
1. a kind of tail gas absorbing system of recyclable organic solvent, it is characterised in that：Including condenser one（1）, the condenser
One（1）Import be connected with the exhaust port of reaction unit, the condenser one（1）The top of reaction unit is placed in, it is described
Condenser one（1）Outlet and surge tank one（2）Import is connected, the surge tank one（2）Condensed device two（3）With organic solvent
Collecting tank（4）It is connected, the surge tank one（2）, condenser two（3）With organic solvent collecting tank（4）Set from top to bottom successively；
The organic solvent collecting tank（4）The liquid outlet of exhaust port and bottom provided with top, the organic solvent collecting tank
（4）Exhaust port is through damping unit（5）Connect surge tank two（6）, the organic solvent collecting tank（4）Liquid outlet was connected
Filter（12）, the surge tank two（6）The multistage device for absorbing tail gas of connection, the multistage device for absorbing tail gas includes one-level tail gas
Absorption plant, two grades of device for absorbing tail gas, vavuum pump surge tanks（10）And vavuum pump（11）, the surge tank two（6）Lead to successively
Cross one-level device for absorbing tail gas, two grades of device for absorbing tail gas and vavuum pump surge tank（10）With vavuum pump（11）It is connected；It is described cold
Condenser one（1）Export and be connected and be provided with pipeline emergency valve with one-level device for absorbing tail gas by pipeline（13）.
2. a kind of tail gas absorbing system of recyclable organic solvent as claimed in claim 1, it is characterised in that：The one-level tail
Aspiration receiving apparatus and two grades of device for absorbing tail gas include absorption tower（7）, absorb liquid storage tank（8）And circulating pump（9）, it is described to absorb
Tower（7）, absorb liquid storage tank（8）And circulating pump（9）It is linked in sequence to form absorbing liquid loop, absorbs liquid storage tank（8）Interior absorbing liquid
Through circulating pump（9）Squeeze into absorption tower（7）Top, and from absorption tower（7）Overhead reflux is to absorbing liquid storage tank（8）It is interior, one-level tail
The absorption tower of aspiration receiving apparatus（7）The gas vent at top connects the absorption tower of two grades of device for absorbing tail gas by pipeline（7）'s
Gas feed.
3. a kind of tail gas absorbing system of recyclable organic solvent as claimed in claim 2, it is characterised in that：The absorption tower
（7）For packed absorber.
4. a kind of tail gas absorbing system of recyclable organic solvent as claimed in claim 1, it is characterised in that：The surge tank
One（2）Diameter be surge tank one（2）1-20 times of inlet diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710340444.3A CN107029444A (en) | 2017-05-15 | 2017-05-15 | A kind of tail gas absorbing system of recyclable organic solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710340444.3A CN107029444A (en) | 2017-05-15 | 2017-05-15 | A kind of tail gas absorbing system of recyclable organic solvent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107029444A true CN107029444A (en) | 2017-08-11 |
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ID=59538198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710340444.3A Pending CN107029444A (en) | 2017-05-15 | 2017-05-15 | A kind of tail gas absorbing system of recyclable organic solvent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107029444A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432938A (en) * | 2018-12-30 | 2019-03-08 | 山东铭浩环保科技有限公司 | A kind of alcohol industry distillation unit VOC waste gas recovery processing method |
-
2017
- 2017-05-15 CN CN201710340444.3A patent/CN107029444A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109432938A (en) * | 2018-12-30 | 2019-03-08 | 山东铭浩环保科技有限公司 | A kind of alcohol industry distillation unit VOC waste gas recovery processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170811 |
|
| WD01 | Invention patent application deemed withdrawn after publication |