CN108636066A - A kind of exhaust treatment system - Google Patents
A kind of exhaust treatment system Download PDFInfo
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- CN108636066A CN108636066A CN201810751328.5A CN201810751328A CN108636066A CN 108636066 A CN108636066 A CN 108636066A CN 201810751328 A CN201810751328 A CN 201810751328A CN 108636066 A CN108636066 A CN 108636066A
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- container
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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
- B01D53/14—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
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/1406—Multiple stage absorption
-
- 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
- B01D53/1418—Recovery of products
-
- 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
- B01D53/1487—Removing organic compounds
-
- 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
- B01D53/1493—Selection of liquid materials for use as absorbents
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- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of exhaust treatment systems, and the tail gas generated for handling quaternized production system, includes the first container equipped with absorbing liquid；The first container includes first entrance, first outlet, the second entrance being connected to by circulating fan outside the first container with first outlet, the first pipeline being connected to quaternized production system, the second pipeline, the rabbling mechanism in the first container being connected to first outlet；Rabbling mechanism includes that agitating shaft, stirring motor, at least two groups are butted on the water conservancy diversion ring flat-plate of circumference on the inside of the first container along the agitating paddle being set on agitating shaft, the ring that the length extending direction of agitating shaft is spaced two-by-two, water conservancy diversion ring flat-plate is set between two groups of adjacent agitating paddles, and the internal diameter of water conservancy diversion ring flat-plate is less than the rotating diameter of agitating paddle；Absorbing liquid is to react required raw material in quaternized production system.A kind of exhaust treatment system of the present invention, tail gas is collected by absorbing liquid and is recycled, and is effectively prevented pollution of the tail gas to air, and reduce production cost.
Description
Technical field
The present invention relates to a kind of exhaust treatment systems.
Background technology
Quaternization reaction is the reaction for referring to synthesis quaternary ammonium salt, and quaternary ammonium salt is four hydrogen atoms in ammonium ion all by hydrocarbon
Base replaces and the compound of generation, general formula R4NX。
Generally use a halogenated hydrocarbons excessive in quaternary ammoniated production process, since a different halogenated hydrocarbons boiling points differs greatly,
To the processing of excessive halogenated hydrocarbons tail gas absorption, there are certain difficulties, there is following several absorption process in industry at present：
One halogenated hydrocarbons is recycled using liquid nitrogen deep, for this method to equipment requirement height, input cost is high.
Using solvent absorption, since solubility is smaller in water for a halogenated hydrocarbons, it is therefore necessary to solvent absorption is used, solvent
Volatilization can cause secondary atmosphere pollution；After absorbing processing a period of time, solvent needs to be recycled or handle according to waste, pollutes
Lead to the rising of cost while environment.
One halogenated hydrocarbons uses absorbing by liquid caustic soda, and assimilation effect is poor, needs to regularly replace liquid caustic soda, contains a halogen in the liquid caustic soda of replacement
For hydrocarbon hydrolysate hydrocarbon for alcohol, certain hydrocarbon are toxic articles for alcohol, and such as allyl alcohol, subsequent treatment process is complex, if processing is not
When will cause to seriously affect to environment.
One halogenated hydrocarbons uses ultraviolet catalytic oxidation, and the gas after oxidation is caused secondary there is still a need for using absorptions such as lye
Pollution.
Invention content
The object of the present invention is to provide a kind of exhaust treatment systems, and the tail gas generated in quaternized production system is passed through suction
It receives liquid and collects recycling, be effectively prevented pollution of the tail gas to air, and reduce production cost.
In order to achieve the above objectives, the technical solution adopted by the present invention is：
A kind of exhaust treatment system, the tail gas generated for handling quaternized production system, the exhaust treatment system include interior
The first container of the portion equipped with the absorbing liquid for absorbing tail gas；
The first container include first entrance set on its underpart for being passed through tail gas, the first outlet that is provided thereon portion,
Set on the second entrance being connected to by circulating fan outside the first container with the first outlet of its underpart, set on it
The first pipeline of lower part being connected to the quaternized production system, is set to institute at the second pipeline being connected to the first outlet
State the rabbling mechanism in the first container；
The rabbling mechanism include around Pivot Point Center line direction rotate be set to the first container in agitating shaft, for driving
The stirring motor of agitating shaft rotation, at least two groups are described along being set to of being spaced two-by-two of the length extending direction of the agitating shaft
Agitating paddle, ring on agitating shaft are butted on the water conservancy diversion ring flat-plate of circumference on the inside of the first container, and the water conservancy diversion ring flat-plate is set to adjacent
Between agitating paddle described in two groups, the internal diameter of the water conservancy diversion ring flat-plate is less than the rotating diameter of the agitating paddle；
The absorbing liquid is to react required raw material in the quaternized production system.
Preferably, the exhaust treatment system further includes condensing mechanism；
The condensing mechanism include the condenser being connected to the quaternized production system, respectively with the condenser and described
The surge tank of one entrance connection, the surge tank lower part are equipped with the third pipeline being connected to the quaternized production system.
It is highly preferred that being equipped with freezing liquid in the condenser, the temperature of the freezing liquid is -30 DEG C -0 DEG C.
Preferably, the exhaust treatment system further includes spraying mechanism；The spraying mechanism includes second container；
The second container include set on its underpart and the second pipeline connection third entrance, be provided thereon portion for leading to
Enter the 4th entrance of deionized water, connected by circulating pump outside the second container set on its underpart and the 4th entrance
Logical second outlet, the third outlet for being provided thereon portion, the use being connected to the 4th entrance in the second container
In the spray thrower for spraying the deionized water.
It is highly preferred that the circulating pump, is additionally operable to circulation fluid being passed through the quaternized production system by the 4th pipeline
In.
It is highly preferred that the exhaust treatment system further includes adsorbing mechanism；
The adsorbing mechanism include with the third container of the third outlet, the activated carbon in the third container,
The partition board being set in the third container that polylith is spaced two-by-two, the on the third container the 4th export, described in polylith
Partition board is supported along what the direction of transfer of gas arranged alternatively up and down successively in the third container.
Preferably, the exhaust treatment system further include be sheathed on circumference on the outside of the first container for heating or cold
But wrapping layer.
Preferably, the agitating paddle is swept-back blade, and the number of sheets of the agitating paddle is 2-9.
Preferably, the water conservancy diversion ring flat-plate is arranged with the agitating shaft coaxial inner conductor, and the water conservancy diversion ring flat-plate is stirred perpendicular to described
Mix axis.
Preferably, the exhaust treatment system further includes being connected to the first container for supplementing the absorbing liquid
4th container.
Due to the application of the above technical scheme, the present invention has following advantages compared with prior art：A kind of tail of the present invention
The tail gas generated in quaternized production system is collected by absorbing liquid and is recycled by gas processing system, which is quaternized
Required raw material is reacted in production system, by this setting, realization makes full use of tail gas, which does not produce substantially
The raw three wastes, the material after absorption all return to quaternized production system, reduce the consumption of raw material；By be arranged multiple impellers and
Material in the first container is divided into multiple recycle streams when work, gas-liquid is made to come into full contact with by water conservancy diversion ring flat-plate；It is recycled by being arranged
Wind turbine recycles tail gas, extends gas-liquid contact time so that the halogenated hydrocarbons in tail gas is fully absorbed.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of exhaust treatment system of the present invention.
Wherein：1, quaternized production system；2, the first container；3, first entrance；4, first outlet；5, circulating fan；6、
Second entrance；7, the first pipeline；8, the second pipeline；9, agitating shaft；10, stirring motor；11, agitating paddle；12, water conservancy diversion ring flat-plate；13、
Condenser；14, surge tank；15, third pipeline；16, second container；17, third entrance；18, the 4th entrance；19, circulating pump；
20, second outlet；21, third exports；22, spray thrower；23, the 4th pipeline；24, third container；25, partition board；26, the 4th goes out
Mouthful；27, the 4th container.
Specific implementation mode
The technical solution of the present invention will be further described below with reference to the accompanying drawings.
It is shown in Figure 1, a kind of above-mentioned exhaust treatment system, the tail gas for handling the generation of quaternized production system 1, tail
Gas processing system includes the internal the first container 2 equipped with the absorbing liquid for absorbing tail gas, which is for quaternized production
Required raw material is reacted in system 1.By this setting, the tail gas generated in quaternized production system 1 is collected by absorbing liquid,
Realization makes full use of tail gas, which does not generate the three wastes substantially, and the material after absorption all returns to quaternized production
System 1 reduces the consumption of raw material.
The first container 2 includes being used for pass-out for what is be passed through the first entrance 3 of tail gas, be provided thereon portion set on its underpart
The first outlet 4 of gas, second be connected to by circulating fan 5 outside the first container 2 with first outlet 4 set on its underpart
Entrance 6, the first pipeline 7 being connected to quaternized production system 1 set on its underpart, the second pipeline being connected to first outlet 4
8.In the present embodiment, first entrance 3 is set to 2 following side of the first container, by this setting, makes to enter in the first container 2
Tail gas rises to first outlet 4 in absorbing liquid, extends gas-liquid contact time；First outlet 4 is then set to the upper top of the first container 2
Portion；By the way that circulating fan 5 is arranged, the tail gas not fully absorbed is passed through from second entrance 6 in the first container 2 again, extends gas-liquid
Time of contact carries out cyclic absorption to tail gas, improves the absorption efficiency of tail gas；Second entrance 6 is set to the bottom of the first container 2
Portion is made the tail gas being recycled into the first container 2 rise to first outlet 4 in absorbing liquid, is further prolonged by this setting
Gas-liquid contact time has been grown, the absorption efficiency of tail gas is improved.By the way that the first pipeline 7 is arranged, the liquid after absorption tail gas is returned
Quaternized production system 1 is returned, the consumption of raw material is reduced.
A kind of above-mentioned exhaust treatment system further includes the rabbling mechanism being set in the first container 2.Rabbling mechanism includes around certainly
The agitating shaft 9 of body direction of axis line rotation being set in the first container 2 is used to drive agitating shaft 9 outside the first container 2
The stirring being set on agitating shaft 9 that the stirring motor 10 of rotation, at least two groups are spaced two-by-two along the length extending direction of agitating shaft 9
Paddle 11, ring are butted on the water conservancy diversion ring flat-plate 12 of 2 inside circumference of the first container, water conservancy diversion ring flat-plate 12 be set to two groups of adjacent agitating paddles 11 it
Between, the internal diameter of water conservancy diversion ring flat-plate 12 is less than the rotating diameter of agitating paddle 11.By this setting, the gas in the first container 2 is being inhaled
When rising in receipts liquid, needs to follow the gap between agitating paddle 11 and water conservancy diversion ring flat-plate 12 and rise along direction of a curve, is i.e. the first container 2
Interior absorbing liquid is stirred paddle 11 and water conservancy diversion ring flat-plate 12 is divided into multiple recycle streams, and gas-liquid is enable to come into full contact with.In this implementation
In example, agitating paddle 11 has four groups, and there are three water conservancy diversion ring flat-plates 12, is set between two groups of adjacent agitating paddles 11 correspondingly.
In the present embodiment, agitating paddle 11 is swept-back blade, and the number of sheets of agitating paddle 11 is 2-9；Water conservancy diversion ring flat-plate 12 and agitating shaft 9 are concentric
Line is arranged, and perpendicular to agitating shaft 9, agitating shaft 9 vertically extends the plate face of water conservancy diversion ring flat-plate 12.
Above-mentioned exhaust treatment system further includes condensing mechanism.Condensing mechanism include be connected to quaternized production system 1 it is cold
Condenser 13, the surge tank 14 being connected to respectively with condenser 13 and first entrance 3,14 lower part of surge tank is equipped with is with quaternized production
The third pipeline 15 of 1 connection of system.In the present embodiment, the connection of condenser 13 is in the top of surge tank 14, first entrance 3 and buffering
The following side of tank 14 is connected to, and third pipeline 15 is then connected to the lower bottom part of surge tank 14；By this setting, generated after condensation
Liquid directly flowed back in quaternized production system 1 from the bottom of surge tank 14 along third pipeline 15, remaining gas then into
Enter and is absorbed by liquid absorption in the first container 2.In the present embodiment, freezing liquid is equipped in condenser 13, the temperature of freezing liquid is -30
℃-0℃。
Above-mentioned exhaust treatment system further includes spraying mechanism.Spraying mechanism includes second container 16, and second container 16 includes
The 4th entrance for being passed through deionized water for being connected to third entrance 17 with the second pipeline 8, being provided thereon portion set on its underpart
18, set on the second outlet 20 being connected to by circulating pump 19 outside second container 16 with the 4th entrance 18 of its underpart, be set to
Upper part for vent third outlet 21, in second container 16 be connected to the 4th entrance 18 be used for spray
The spray thrower 22 of deionized water.In the present embodiment, third entrance 17 is set to the following side of second container 16, and the 4th entrance 18 is set
In the upper lateral part of second container 16, second outlet 20 is then set to the lower bottom part of second container 16, and third outlet 21 is set to second and holds
The upper top of device 16；By this setting, gas can be filled from the uphill process of lower part with the deionized water sprayed from top
Tap is touched, and the effective gas that improves is by the absorption efficiency of deionized water；By the way that circulating pump 19 is arranged, going for a small amount of gas will be absorbed
Ionized water is passed through from the 4th entrance 18 in second container 16 again to be continued to spray, and is improved the utilization rate of deionized water, is reduced life
Produce cost.In the present embodiment, circulating pump 19 is additionally operable to circulation fluid being passed through quaternized production system 1 by the 4th pipeline 23
In, reduce the consumption of raw material.
Above-mentioned exhaust treatment system further includes adsorbing mechanism.Adsorbing mechanism includes the third container being connected to third outlet 21
24, the activated carbon in third container 24, polylith be spaced two-by-two be set to third container 24 in partition board 25, be set to third hold
On device 24 for pass-out be tightly held by activated carbon after gas the 4th outlet 26, polylith partition board 25 along gas direction of transfer according to
It is secondary arrange alternatively up and down support be set to third container 24 in.By this setting, by the gas delivery channels in third container 24
It is divided into S-shaped channel, increases transmitting path of the gas in third container 24, that is, increases biography of the gas in third container 24
Send the time, increase gas in third container 24 with the time of contact of activated carbon, improve the adsorption efficiency of activated carbon.Third
The activated carbon being added in container 24 is bulk, and activated carbon is replaced once for 12-24 months, and replaced activated carbon is exhausted by high temperature
Oxygen regenerates, reusable.
In the present embodiment, exhaust treatment system further include be sheathed on 2 outside circumference of the first container for heat or it is cold
But the wrapping layer of the first container 2（It is not shown in figure）.By the way that the wrapping layer is arranged, needed according to different absorbing liquids different
Reaction temperature condition, to adjust the temperature of absorbing liquid in the first container 2, preferably to be absorbed to tail gas.
In the present embodiment, exhaust treatment system further includes being connected to the first container 2 for supplementing the 4th of absorbing liquid
Container 27.
Embodiment 1：
Dimethyl diallyl ammonium chloride（Abbreviation DMDAAC）Tail gas includes, nitrogen, chloropropene, dimethylamine and micro hydrogen chloride
Gas.Chloropropene of the tail gas by condensing mechanism recycling about 10%；Absorbing liquid in the first container 2 is dimethylamine agueous solution, tail gas
By 98.5% and whole hydrogen chloride gas in the remaining chloropropene of 2 recycling of the first container；It is micro in residual exhaust
Chloropropene gas comes into full contact with absorption in spraying mechanism with dimethylamine gas by deionized water, and the gas of discharge is through repeated detection
VOC concentration ＜ 20mg/m3, met discharge standard；In view of the variation of tail gas amount and operating flexibility, the gas of discharge is passed through
In adsorbing mechanism, it is discharged into air again after activated carbon absorbs.
Embodiment 2：
Absorption containing chloromethanes tail gas, the quaternized products containing chloromethanes tail gas including but not limited to（Methyl）Acryloyl-oxy
Ethyl-trimethyl salmiac,（Methyl）Acryloyl hydroxypropyltrimonium chloride.
Tail gas is passed directly into the first container 2, the absorbing liquid in the first container 2 is that the good correspondence of advance constant temperature is quaternized
The tertiary amine of product, chloromethanes of the tail gas by the recycling of the first container 2 99.5%；Micro methyl chloride gas is being sprayed in residual exhaust
Absorption is come into full contact with by deionized water in leaching mechanism, the gas of discharge is through repeated detection VOC concentration ＜ 20mg/m3, met row
Put standard；In view of the variation of tail gas amount and operating flexibility, the gas of discharge is passed through in adsorbing mechanism, is absorbed by activated carbon
It is discharged into air again afterwards.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and be implemented, and it is not intended to limit the scope of the present invention, all according to the present invention
Equivalent change or modification made by Spirit Essence should all cover within the scope of the present invention.
Claims (10)
1. a kind of exhaust treatment system, the tail gas generated for handling quaternized production system, it is characterised in that：At the tail gas
Reason system includes the internal the first container equipped with the absorbing liquid for absorbing tail gas；
The first container include first entrance set on its underpart for being passed through tail gas, the first outlet that is provided thereon portion,
Set on the second entrance being connected to by circulating fan outside the first container with the first outlet of its underpart, set on it
The first pipeline of lower part being connected to the quaternized production system, is set to institute at the second pipeline being connected to the first outlet
State the rabbling mechanism in the first container；
The rabbling mechanism include around Pivot Point Center line direction rotate be set to the first container in agitating shaft, for driving
The stirring motor of agitating shaft rotation, at least two groups are described along being set to of being spaced two-by-two of the length extending direction of the agitating shaft
Agitating paddle, ring on agitating shaft are butted on the water conservancy diversion ring flat-plate of circumference on the inside of the first container, and the water conservancy diversion ring flat-plate is set to adjacent
Between agitating paddle described in two groups, the internal diameter of the water conservancy diversion ring flat-plate is less than the rotating diameter of the agitating paddle；
The absorbing liquid is to react required raw material in the quaternized production system.
2. a kind of exhaust treatment system according to claim 1, it is characterised in that：The exhaust treatment system further includes cold
Solidifying mechanism；
The condensing mechanism include the condenser being connected to the quaternized production system, respectively with the condenser and described
The surge tank of one entrance connection, the surge tank lower part are equipped with the third pipeline being connected to the quaternized production system.
3. a kind of exhaust treatment system according to claim 2, it is characterised in that：Freezing liquid is equipped in the condenser,
The temperature of the freezing liquid is -30 DEG C -0 DEG C.
4. a kind of exhaust treatment system according to claim 1, it is characterised in that：The exhaust treatment system further includes spray
Drench mechanism；The spraying mechanism includes second container；
The second container include set on its underpart and the second pipeline connection third entrance, be provided thereon portion for leading to
Enter the 4th entrance of deionized water, connected by circulating pump outside the second container set on its underpart and the 4th entrance
Logical second outlet, the third outlet for being provided thereon portion, the use being connected to the 4th entrance in the second container
In the spray thrower for spraying the deionized water.
5. a kind of exhaust treatment system according to claim 4, it is characterised in that：The circulating pump is additionally operable to recycle
Liquid is passed through by the 4th pipeline in the quaternized production system.
6. a kind of exhaust treatment system according to claim 4, it is characterised in that：The exhaust treatment system further includes inhaling
Random structure；
The adsorbing mechanism include with the third container of the third outlet, the activated carbon in the third container,
The partition board being set in the third container that polylith is spaced two-by-two, the on the third container the 4th export, described in polylith
Partition board is supported along what the direction of transfer of gas arranged alternatively up and down successively in the third container.
7. a kind of exhaust treatment system according to claim 1, it is characterised in that：The exhaust treatment system further includes set
The wrapping layer for being heated or cooled of circumference on the outside of the first container.
8. a kind of exhaust treatment system according to claim 1, it is characterised in that：The agitating paddle is swept-back blade,
The number of sheets of the agitating paddle is 2-9.
9. a kind of exhaust treatment system according to claim 1, it is characterised in that：The water conservancy diversion ring flat-plate and the agitating shaft
Coaxial inner conductor is arranged, and the water conservancy diversion ring flat-plate is perpendicular to the agitating shaft.
10. a kind of exhaust treatment system according to claim 1, it is characterised in that：The exhaust treatment system further includes
The 4th container for supplementing the absorbing liquid being connected to the first container.
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| CN201810751328.5A CN108636066A (en) | 2018-07-10 | 2018-07-10 | A kind of exhaust treatment system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110665360A (en) * | 2019-10-15 | 2020-01-10 | 老河口新景科技有限责任公司 | Acrolein tail gas processing apparatus |
| CN111097278A (en) * | 2020-01-14 | 2020-05-05 | 上海正帆科技股份有限公司 | Tail gas treatment device and tail gas treatment system |
| CN111111349A (en) * | 2020-01-16 | 2020-05-08 | 广西金科环境工程有限公司 | Process and equipment for treating tail gas generated in production of artificial board |
| CN111841262A (en) * | 2020-08-23 | 2020-10-30 | 广东宏科检测技术有限公司 | Disposal and elimination device of VOC in industrial waste gas |
| CN113101761A (en) * | 2021-04-16 | 2021-07-13 | 诚丰家具有限公司 | A exhaust treatment system for production of wood furniture |
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