CN109550362A - A kind of exhaust treatment system and its waste gas processing method - Google Patents
A kind of exhaust treatment system and its waste gas processing method Download PDFInfo
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- 238000011282 treatment Methods 0.000 title claims abstract description 65
- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 239000002912 waste gas Substances 0.000 title claims abstract description 15
- 238000001179 sorption measurement Methods 0.000 claims abstract description 342
- 239000003463 adsorbent Substances 0.000 claims abstract description 203
- 239000007789 gas Substances 0.000 claims abstract description 91
- 238000004064 recycling Methods 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 claims abstract description 24
- 230000004087 circulation Effects 0.000 claims abstract description 18
- 239000002594 sorbent Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 155
- 238000001802 infusion Methods 0.000 claims description 58
- 238000010521 absorption reaction Methods 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 15
- 230000005484 gravity Effects 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- ZFPGARUNNKGOBB-UHFFFAOYSA-N 1-Ethyl-2-pyrrolidinone Chemical compound CCN1CCCC1=O ZFPGARUNNKGOBB-UHFFFAOYSA-N 0.000 claims description 3
- LCEDQNDDFOCWGG-UHFFFAOYSA-N N-Formyl-Morpholine Natural products O=CN1CCOCC1 LCEDQNDDFOCWGG-UHFFFAOYSA-N 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- OXHNLMTVIGZXSG-UHFFFAOYSA-N 1-Methylpyrrole Chemical group CN1C=CC=C1 OXHNLMTVIGZXSG-UHFFFAOYSA-N 0.000 claims 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 7
- 238000011017 operating method Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 239000012855 volatile organic compound Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 239000012530 fluid Substances 0.000 description 6
- 238000012856 packing Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001839 systemic circulation Effects 0.000 description 1
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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
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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
- B01D53/1406—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
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Chemical & Material Sciences (AREA)
- 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 first adsorption tower, the second adsorption tower and third adsorption tower are to waste treatment.The exhaust treatment system reduces the space occupied of entire adsorption system, guarantees the treatment effect to exhaust gas.The invention also discloses a kind of waste gas processing methods of above-mentioned exhaust treatment system, include the following steps: 1. to fill adsorbent；2. sorbent circulation is sprayed at the first adsorption stuffing layer upper surface；3. the first adsorption stuffing layer that exhaust gas flows through the first adsorption tower is adsorbed by adsorbent；4. the first adsorption stuffing layer that exhaust gas flows through the second adsorption tower is adsorbed by adsorbent；5. the first adsorption stuffing layer that exhaust gas flows through third adsorption tower is adsorbed by adsorbent；6. the outlet port of third adsorption tower is discharged by blower；7. adsorbent flows back to system by recycling separator processing.The waste gas processing method ensure that adsorbent to the treatment effect of exhaust gas, and the operating procedure of processing method is simpler.
Description
Technical field
The present invention relates to the separating treatment technology of exhaust gas, especially a kind of exhaust treatment system and its waste gas processing method.
Background technique
Atmosphere pollution is China's one of environmental problem most outstanding at present, and industrial waste gas is the important next of atmosphere pollution
Source.Big capacity industrial waste gas is discharged into atmosphere, necessarily declines atmosphere quality, brings serious harm to human health.Industry Waste
Most intractable in gas is exactly organic exhaust gas, after organic exhaust gas enters human body by respiratory tract and skin, can give breathing, the blood of people
The systems such as liquid, liver and organ cause temporary and permanent lesion, especially benzopyrenes polycyclic aromatic hydrocarbon that human body can be made direct
It is carcinogenic, cause the great attention of the mankind.
The emission control of volatile organic matter (volatile organic compound) is that one of environmental protection is important
Engineering, seven kinds of methods of VOC exhaust gas conventional treatment at present: (1) VOC exhaust gas treatment technology --- condensing recovery method；(2) VOC exhaust gas
Processing technique --- heat damage method；(3) VOC exhaust gas treatment technology --- absorption method；(4) VOC exhaust gas treatment technology --- biology
Facture；(5) VOC exhaust gas treatment technology --- pressure-variable adsorption separation and purification techniques；(6) VOC exhaust gas treatment technology --- oxygen
Change method；(7) VOC exhaust gas treatment technology --- liquid absorption method.
But exist in waste gas processing method in the prior art, operating procedure is complicated, and occupation area of equipment is big, Wu Fashi
Now recycle the defect of independent suction-operated in a system to exhaust gas.
Summary of the invention
In view of this, each adsorption tower is to adsorbent the main purpose of the present invention is to provide a kind of exhaust treatment system
It is recycled, three adsorption towers are set side by side, and reduce the space occupied of entire adsorption system, each adsorption tower individually locates exhaust gas
Reason, and multiple adsorption towers guarantee the treatment effect to exhaust gas continuously to exhaust-gas treatment.
Another object of the present invention is to provide a kind of waste gas processing method, it ensure that adsorbent imitates the processing of exhaust gas
Fruit, reduces the usage amount to adsorbent, and the operating procedure of processing method is simpler.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of exhaust treatment system, including an adsorption tower or the multiple adsorption towers being sequentially connected in series, the absorption
The first adsorption stuffing layer is equipped with inside tower, the exhaust port side of the adsorption tower is equipped with the second adsorption stuffing layer；The adsorption tower
Upper and lower two sides connect sorbent circulation pipeline.
The adsorption tower includes three, respectively the first adsorption tower, the second adsorption tower and third adsorption tower, and described first inhales
The inlet port of attached tower lower end connects outlet port, and the exhaust port side of first adsorption tower upper end connects the second adsorption tower
Inlet port, the inlet port of the exhaust port side connection third adsorption tower of second adsorption tower upper end；First adsorption tower,
It is equipped with the first adsorption stuffing layer inside second adsorption tower and third adsorption tower, on the upside of the first adsorption stuffing layer of each adsorption tower
Adsorbent inlet tube is connected, connects adsorbent outlet tube in the bottom of each adsorption tower.
The other end of the adsorbent inlet tube connects adsorbent outlet tube, goes out in the adsorbent inlet tube with adsorbent
The first liquid reserve tank, the second liquid reserve tank, third liquid reserve tank are separately connected between liquid pipe.
The other end of the adsorbent inlet tube of first adsorption tower is connected to the bottom of the second adsorption tower, the absorption of the second adsorption tower
The bottom of the other end connection third adsorption tower of agent inlet tube.
The other end of the adsorbent inlet tube connects adsorbent outlet tube, goes out in the adsorbent inlet tube with adsorbent
The first liquid reserve tank, the second liquid reserve tank, third liquid reserve tank are separately connected between liquid pipe；The adsorbent inlet tube of first adsorption tower it is another
One end is also connected to the bottom of the second adsorption tower, the bottom of the other end connection third adsorption tower of the adsorbent inlet tube of the second adsorption tower
Portion.
The first infusion pump, the second infusion pump and third infusion are equipped with close to adsorption tower one end in the adsorbent inlet tube
Pump, is separately connected the first solenoid valve between adsorbent inlet tube and the first liquid reserve tank, the second liquid reserve tank and third liquid reserve tank；The
Between the adsorbent inlet tube and the second adsorption tower of one adsorption tower and the adsorbent inlet tube of the second adsorption tower with third inhale
Second solenoid valve is respectively provided between attached tower.
Adsorbent recycling is connected between the adsorbent outlet tube of first adsorption tower and third adsorbent outlet tube to separate
Device.
There is multilayer the first adsorption stuffing layer inside first adsorption tower, the second adsorption tower and third adsorption tower, it is described
Adsorbent inlet tube is all connected on the upside of first adsorption stuffing layer.
Cooling system device is connected between the inlet port and outlet port of first adsorption tower；The third absorption
The exhaust port side of tower upper end connects blower.
The adsorbent is the one of which or more of N-Methyl pyrrolidone, N- ethyl pyrrolidone and N- N-formyl morpholine N
The mixed liquor of kind.
A kind of waste gas processing method of above-mentioned exhaust treatment system, includes the following steps:
S1, adsorbent is filled in the first liquid reserve tank, the second liquid reserve tank, third liquid reserve tank of exhaust treatment system；
S2, the first infusion pump, the second infusion pump, third infusion pump and in adsorbent feed liquor on adsorbent inlet tube are opened
Pipe and the first liquid reserve tank, the second liquid reserve tank connect the first solenoid valve between third liquid reserve tank, make the first liquid reserve tank, the second liquid storage
Sorbent circulation in case, third liquid reserve tank is sprayed at each first adsorption stuffing layer upper surface；
S3, exhaust vent flow into after cooling system device cooling treatment, to the inlet port of the first adsorption tower lower end
It is passed through exhaust gas, the first adsorption stuffing layer that exhaust gas flows through the first adsorption tower is adsorbed by adsorbent, and the adsorbent is in gravity
Under, the first absorption tower bottom is flowed into, is flowed into the first liquid reserve tank by adsorbent outlet tube；
S4, it is flowed into second in the outlet port discharge of the first adsorption tower by the exhaust gas after the absorption of the first adsorption tower and is inhaled
The inlet port of attached tower, the first adsorption stuffing layer that exhaust gas flows through the second adsorption tower are adsorbed by adsorbent, and the adsorbent is in weight
Under power effect, the second absorption tower bottom is flowed into, is flowed into the second liquid reserve tank by adsorbent outlet tube；
S5, it is flowed into third in the outlet port discharge of the second adsorption tower by the exhaust gas after the absorption of the second adsorption tower and is inhaled
The inlet port of attached tower, the first adsorption stuffing layer that exhaust gas flows through third adsorption tower are adsorbed by adsorbent, and the adsorbent is in weight
Under power effect, flows into third and adsorb tower bottom, flowed into third liquid reserve tank by adsorbent outlet tube；
S6, by the exhaust gas after the absorption of third adsorption tower, blower discharge is passed through by the outlet port of third adsorption tower；
S7, the first liquid reserve tank, the second liquid reserve tank, impurity concentration reaches setting concentration or more in adsorbent in third liquid reserve tank
When: it closes and all connects the first electromagnetism between adsorbent inlet tube and the first liquid reserve tank, the second liquid reserve tank, third liquid reserve tank
Valve is opened between the adsorbent inlet tube and the second adsorption tower of the first adsorption tower and the adsorbent inlet tube of the second adsorption tower
With the second solenoid valve between third adsorption tower；The adsorbent outlet tube and adsorbent for opening the first adsorption tower recycle separator
Between connect first recycling infusion pump and third adsorption tower adsorbent outlet tube and adsorbent recycling separator between
Second recycling infusion pump of connection；
S8, unlatching are connected to the first infusion pump, the second infusion pump and third infusion pump on the pipeline of recycling separator,
Make in exhaust treatment system: the adsorbent in the first liquid reserve tank of the first adsorption tower flows into adsorbent recycling separator recycling point
From processing；Adsorbent in second liquid reserve tank of the second adsorption tower flows into the first adsorption tower, then flows into the first of the first adsorption tower
In liquid reserve tank；Adsorbent in the third liquid reserve tank of third adsorption tower flows into the second adsorption tower, then flows into the second adsorption tower
In second liquid reserve tank.
Exhaust treatment system and its waste gas processing method of the invention, has the following beneficial effects:
In the exhaust treatment system, three-level adsorption tower alone cycle repeats adsorption treatment to exhaust gas, and to each absorption
Sorbent circulation in tower guarantees the adsorption effect to exhaust gas.It avoids in the prior art, occupation area of equipment is big, operative employee
Skill is complicated, and cannot achieve the defect for recycling independent suction-operated in a system to exhaust gas.In the exhaust treatment system,
Each adsorption tower uses sorbent circulation, and three adsorption towers are set side by side, and reduces the space occupied of entire adsorption system, each
Adsorption tower individually handles exhaust gas, and multiple adsorption towers guarantee the treatment effect to exhaust gas continuously to exhaust-gas treatment.
The waste gas processing method, exhaust gas is individually handled by three adsorption towers, and the adsorbent list in each adsorption tower
Solely to the exhaust-gas treatment in each adsorption tower, and the sorbent circulation in the second adsorption tower can be flowed into the first adsorption tower,
Sorbent circulation in third adsorption tower flows into the second adsorption tower, ensure that adsorbent to the treatment effect of exhaust gas, reduces
To the usage amount of adsorbent.Avoid the defect of waste gas processing method complex treatment process in the prior art.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of exhaust treatment system embodiment of the present invention.
Wherein, the 1, first adsorption tower, 111, adsorbent inlet tube, 112, adsorbent outlet tube, the 2, first solenoid valve, 3,
Two solenoid valves, 4, circulation liquid pipe, the 5, first liquid reserve tank, the 6, second adsorption tower, the 7, first adsorption stuffing layer, the 8, second adsorption stuffing
Layer, the 9, second liquid reserve tank, 10, third adsorption tower, 11, third liquid reserve tank, the 12, first holding vessel, 13, blower, the 14, first recycling
Infusion pump, 15, cooling system device, the 16, second holding vessel, 17, recycling separator, 18, outlet port, 19, first is defeated
Liquid pump, the 20, second infusion pump, 21, third infusion pump, the 22, second recycling infusion pump.
Specific embodiment
With reference to the accompanying drawing and the embodiment of the present invention is described in further detail method of the invention.
As shown in Figure 1, the exhaust treatment system, comprising: an adsorption tower or the multiple adsorption towers being sequentially connected in series,
The first adsorption stuffing layer 7 is equipped with inside the adsorption tower, the exhaust port side of the adsorption tower is equipped with the second adsorption stuffing layer 8；Institute
State the connection of the two sides up and down sorbent circulation pipeline of adsorption tower.First adsorption stuffing layer sprays adsorption liquid to exhaust gas adsorption treatment,
Second adsorption stuffing layer 8 further absorbs and filter the exhaust gas that each adsorption tower is discharged again, guarantees adsorption effect.Second absorption
Packing layer 8 absorbs and filter the organic matter in the adsorbent and exhaust gas in exhaust gas.
The adsorption tower includes three, and being respectively as follows: includes: the first adsorption tower 1, the second adsorption tower 6 and third adsorption tower 10.
The inlet port connection outlet port 18 of first adsorption tower, 1 lower end (connects cleaner, to exhaust gas at outlet port 18
The first step is dusted processing, reduces the pollution to other systems component, guarantees other systems component everything goes well with your work to carry out).
The exhaust port side of first adsorption tower, 1 upper end connects the inlet port of the second adsorption tower 6, the exhaust port side of 6 upper end of the second adsorption tower
Connect the inlet port of third adsorption tower 10.Absorption is equipped with inside first adsorption tower 1, the second adsorption tower 6 and third adsorption tower 10
The first adsorption stuffing of tower packing layer layer 7 connects absorption on the upside of the first adsorption stuffing of adsorption tower packing layer layer 7 of each adsorption tower
Agent inlet tube 111 connects adsorbent outlet tube 112 in the bottom of each adsorption tower.
Exhaust gas by waste gas dedusting equipment dust removal process and then enters three adsorption towers (the by outlet port 18
One adsorption tower 1, the second adsorption tower 6 and third adsorption tower 10) adsorption treatment, each adsorption tower individually handles exhaust gas, and more
A adsorption tower continuously to exhaust-gas treatment, guarantees the treatment effect to exhaust gas.
The other end of adsorbent inlet tube 111 connects adsorbent outlet tube 112, in adsorbent inlet tube 111 and adsorbent
The first liquid reserve tank 5, the second liquid reserve tank 9, third liquid reserve tank 11 are separately connected between outlet tube 112.Adsorbent flows into adsorption tower, right
The exhaust gas adsorption treatment for flowing through adsorption tower when adsorbent flows to absorption tower bottom, then flows out adsorption tower, is stored in the first liquid storage
Case 5, the second liquid reserve tank 9 in third liquid reserve tank 11, guarantee that adsorbent is without interruption to what is adsorbed in adsorption tower, and then guarantee to inhale
Attached effect.
The bottom of the second adsorption tower 6, the second absorption are connected to the other end of the adsorbent inlet tube 111 of the first adsorption tower 1
The bottom of the other end connection third adsorption tower 10 of the adsorbent inlet tube 111 of tower 6.It realizes and was used between adjacent adsorbent tower
Adsorbent enter in upper level adsorption tower and reuse that (that is: the used adsorbent of third adsorption tower 10 flows into the second absorption
In tower 6, the used adsorbent of the second adsorption tower 6, which flows into the first adsorption tower 1, to be used).Guarantee used in three adsorption towers
Adsorbent is gradually clean, guarantees the further adsorption treatment to exhaust gas, and exhaust gas discharge is made to reach National Industrial waste gas emission standard.
The other end of adsorbent inlet tube 111 connects adsorbent outlet tube 112, in adsorbent inlet tube 111 and adsorbent
The first liquid reserve tank 5, the second liquid reserve tank 9, third liquid reserve tank 11 are connected between outlet tube 112.And the adsorbent of the first adsorption tower 1
The other end of inlet tube 111 is also connected to the bottom of the second adsorption tower 6, the other end of the adsorbent inlet tube 111 of the second adsorption tower 6
It is connected to the bottom of third adsorption tower 10.The circulation in each adsorption tower internal adsorbent is not only realized, guarantees to inhale in adsorption tower
Attached dose is sufficiently fed, and realizes adsorbent to fully absorbing processing in exhaust gas.And between adjacent adsorbent tower, it may be implemented down
Adsorbent in level-one enters upper level and reuses, and guarantees making full use of for adsorbent.
The first infusion pump 19, the second infusion pump 20, third infusion are equipped with close to adsorption tower one end in adsorbent inlet tube 111
Pump 21 connects the first electromagnetism between adsorbent inlet tube 111 and the first liquid reserve tank 5, the second liquid reserve tank 9, third liquid reserve tank 11
Valve 2；Between the adsorbent inlet tube 111 of first adsorption tower 1 and the second adsorption tower 6 and the adsorbent feed liquor of the second adsorption tower 10
Pipe 111 is respectively provided with second solenoid valve 3 between third adsorption tower 10.The adsorbent outlet tube and third of first adsorption tower adsorb
Adsorbent is connected between the adsorbent outlet tube of tower recycles separator.First infusion pump 19, the second infusion pump 20, third infusion
Pump 21 recycles inside each adsorption tower for adsorbent provides power, realizes process are as follows: closes second solenoid valve 3, opens first
Solenoid valve 2, the first infusion pump 19, the second infusion pump 20, third infusion pump 21 work, by the first liquid reserve tank 5, the second liquid reserve tank 9,
Adsorbent in third liquid reserve tank 11 is sprayed onto 7 upside of the first adsorption stuffing layer, carries out adsorption treatment to exhaust gas；Flow through the first suction
Attached packing layer 7 flows to absorption tower bottom, again flows into the first liquid reserve tank 5, the second liquid reserve tank 9, makes in third liquid reserve tank 11 again
With guaranteeing to guarantee the adsorption effect to exhaust gas sufficiently full of adsorbent in the upside of the first adsorption stuffing layer 7.First infusion pump 19,
Second infusion pump 20, third infusion pump 21 recycle between adjacent adsorbent tower for adsorbent and provide power, realize process are as follows: close
First solenoid valve 2 opens second solenoid valve 3, and the first infusion pump 19, the second infusion pump 20, third infusion pump 21 work, by second
The adsorbent (including the adsorbent in the second liquid reserve tank 9) of 6 bottom of adsorption tower is defeated to the first absorption by the first infusion pump 19
Inside tower 1, adsorbent (including the adsorbent in the first liquid reserve tank 5) inside the first adsorption tower 1 passes through recycling separator and returns
Separating treatment is received to utilize again.Second infusion pump 20 is by the adsorbent in third adsorption tower 10 (including in third liquid reserve tank 11
Adsorbent), it is input in the second adsorption tower 6 and utilizes use again.Adsorbent (including the first liquid reserve tank 5 in first adsorption tower 1
In adsorbent) by recycling separator 17 handle after, be input in third adsorption tower 10 and in third liquid reserve tank 11,
It reuses.
It connects and inhales between the adsorbent outlet tube 111 of first adsorption tower 1 and the adsorbent outlet tube 111 of third adsorption tower 10
Attached dose of recycling separator 17.Recycling separator 17 is also connected to the first holding vessel 12 of 1 side of the first adsorption tower, and
In the first recycling infusion pump 14 that the first holding vessel 12 is connect with the adsorbent outlet tube 112 of the first adsorption tower 1.Also it is connected to
Second fluid reservoir 16 of 10 side of third adsorption tower, and the adsorbent outlet tube in the second fluid reservoir 16 and third adsorption tower 10
The second recycling infusion pump 22 between 112.Recycle 112 one end of adsorbent outlet tube that separator 17 connects the first adsorption tower 1
Also it is attached to the bottom of the first liquid reserve tank 5, guarantees the abundant outflow to 5 internal adsorbent of the first liquid reserve tank.Likewise, recycling
112 one end of adsorbent outlet tube that separator 17 connects third adsorption tower 10 is also attached to the bottom of third liquid reserve tank 11,
Guarantee that adsorbent can be stored in inside third liquid reserve tank 11.
In order to realize that each adsorption tower can guarantee adsorption effect to the multiple adsorption treatment of exhaust gas.In the first adsorption tower
1, there is the first adsorption stuffing of multilayer layer 7 inside the second adsorption tower 6 and third adsorption tower 10, on every layer of first adsorption stuffing layer 7
Side is all connected with adsorbent inlet tube 111.Adsorbent inlet tube 111 has fully ensured that each 7 adsorbent of the first adsorption stuffing of layer layer
Ample supply, guarantee the adsorption effect of each the first adsorption stuffing of layer 7 pairs of exhaust gas of layer.
In order to guarantee the adsorption effect to exhaust gas, the excessively high adsorption effect for influencing adsorbent of exhaust gas temperature, and shadow are avoided
The service life for ringing adsorbent connects cooling system device 15 between the inlet port and outlet port of the first adsorption tower 1.
The inside of the cooling system device 15 is equipped with circulation liquid pipe 4, coolant liquid is passed through in the lower end of circulation liquid pipe 4, from circulation liquid pipe 4
Upper end discharge, guarantee to the cooling effect of exhaust gas.Preferably, exhaust gas enters from the upper end of cooling system device 15, in lower end
Discharge.
In order to guarantee to be adsorbed in third adsorption tower 10 reach the exhaust gas of national emission standard after processing can be smooth
Discharge, 10 upper end of third adsorption tower exhaust port side connect blower 13.
Preferably, adsorbent be N-Methyl pyrrolidone, N- ethyl pyrrolidone and N- N-formyl morpholine N one of which or
The a variety of mixed liquor of person.
A kind of waste gas processing method of above-mentioned exhaust treatment system, includes the following steps:
S1, it is filled in each of above-mentioned exhaust treatment system the first liquid reserve tank 5, the second liquid reserve tank 9, third liquid reserve tank 11
Prepared adsorbent in advance.
S2, open adsorbent inlet tube 111 on the first infusion pump 19, the second infusion pump 20, third infusion pump 21 and
Adsorbent inlet tube 111 and the first liquid reserve tank 5, the second liquid reserve tank 9 connect the first solenoid valve 2 between third liquid reserve tank 11, make
One liquid reserve tank 5, the second liquid reserve tank 9, the sorbent circulation in third liquid reserve tank 11 are sprayed at 7 upper surface of the first adsorption stuffing layer.
Sufficient adsorbent is provided the absorption of exhaust gas for each adsorption tower.
S3, exhaust vent 18 flow into after 16 cooling treatment of cooling system device, the air inlet to 1 lower end of the first adsorption tower
Mouth end is passed through exhaust gas, and the first adsorption stuffing layer 7 that exhaust gas flows through the first adsorption tower 1 is adsorbed by adsorbent, in the first adsorption stuffing
The adsorbent of 7 upside of layer under the effect of gravity, flows into 1 bottom of the first adsorption tower, flows into liquid reserve tank by adsorbent outlet tube 112
In 5.
S4, second is flowed into the outlet port discharge of the first adsorption tower 1 by the exhaust gas after the absorption of the first adsorption tower 1
The inlet port of adsorption tower 6, the first adsorption stuffing layer 7 that exhaust gas flows through the second adsorption tower 6 are adsorbed by adsorbent, in the first absorption
The adsorbent of 7 upside of packing layer under the effect of gravity, flows into 6 bottom of the second adsorption tower, is flowed into and stored up by adsorbent outlet tube 112
In liquid case 9.
S5, third is flowed into the outlet port discharge of the second adsorption tower 6 by the exhaust gas after the absorption of the second adsorption tower 6
The inlet port of adsorption tower 10, the first adsorption stuffing layer 7 that exhaust gas flows through third adsorption tower 10 are adsorbed by adsorbent, and are inhaled first
The adsorbent of attached 7 upside of packing layer under the effect of gravity, flows into 10 bottom of third adsorption tower, is flowed by adsorbent outlet tube 112
Enter in third liquid reserve tank 11.
S6, by third adsorption tower 10 adsorb after exhaust gas, blower is passed through by the outlet port of third adsorption tower 10
13 Accelerating Removals.
Impurity concentration reaches and sets in adsorbent in S7, the first liquid reserve tank 5 or the second liquid reserve tank 9 or third liquid reserve tank 11
When determining concentration or more: closing all in adsorbent inlet tube 111 and the first liquid reserve tank 5, the second liquid reserve tank 9, third liquid reserve tank 11
Between connect the first solenoid valve 2, open the first adsorption tower 1 adsorbent inlet tube 111 and the second adsorption tower 6 between and second
The second solenoid valve 3 between third adsorption tower 10 of the adsorbent inlet tube 111 of adsorption tower 6；Open the suction of the first adsorption tower 1
The adsorbent of the solenoid valve and third adsorption tower 10 that are connected between attached dose of outlet tube 112 and adsorbent recycling separator 17
The solenoid valve connected between outlet tube 112 and adsorbent recycling separator 17.Realize third adsorption tower 10 in adsorbent with
And the adsorbent in the third liquid reserve tank 11 of the connection of third adsorption tower 10, it flows into the second adsorption tower 6 and the second adsorption tower 6 connects
In the second liquid reserve tank 9 connect.Adsorbent in second adsorption tower 6 and the suction in the second liquid reserve tank 9 of the second adsorption tower 6 connection
It attached dose, flows into the first adsorption tower 1 and in the first liquid reserve tank 5 of the first adsorption tower 1 connection.Absorption in first adsorption tower 1
Adsorbent in first liquid reserve tank 5 of agent and the connection of the first adsorption tower 1 flows into recycling separator 17 and is recycled again.
The first recycling infusion pump 14, second that S8, unlatching are connected on the pipeline of recycling separator 17 recycles infusion pump
22, make in exhaust treatment system: the adsorbent in the first liquid reserve tank 5 of the first adsorption tower 1 flows into adsorbent recycling separator
17 recycling separating treatments；Adsorbent in second liquid reserve tank 9 of the second adsorption tower 6 flows into the first adsorption tower 1, then flows into the first suction
In first liquid reserve tank 5 of attached tower 1；Adsorbent in the third liquid reserve tank 11 of third adsorption tower 10 flows into the second adsorption tower 6, then flows
Enter in the second liquid reserve tank 9 in the second adsorption tower 6.
Specifically, the exhaust treatment system and waste gas processing method are as follows:
It is self-loopa first, the control of second solenoid valve 3 is in close state.First solenoid valve 2 controls dwelling in open shape
State, the first infusion pump 19, the second infusion pump 20, third infusion pump 21 are started to work, and the first infusion pump 19, the second infusion pump are passed through
20, third infusion pump 21 is by the adsorbent in the first liquid reserve tank 5, the second liquid reserve tank 9, third liquid reserve tank 11 with 12 sides' per hour
Speed is sprayed respectively into the first adsorption tower 1, the second adsorption tower 6 and third adsorption tower 10, the first liquid reserve tank 5, the second liquid reserve tank
9, third liquid reserve tank 11 and middle adsorbent in adsorption tower are 800KG, and storage space is 1.2 cubic metres.It will be containing VOC exhaust gas from useless
Gas outlet 18 enters, the maximum quantity of wind of this equipment limit be 5000 cubes per hour, when entering adsorption plant first by exhaust gas
Pass through cleaner dust removal process, it may be assumed that the technology of dedusting is filtered using filter bag, filtering accuracy is chosen 0.01 micron, will be removed
Gas after dirt is passed through cooling system device 15 and is cooled down, and circulation fluid is by circulation liquid pipe 4 under in cooling system device 15
It is started the cycle on and, the temperature of exhaust gas is controlled at 30 DEG C.Exhaust gas is entered the first adsorption tower 1 at this time, 7 He of the first adsorption stuffing layer
The sum of surface area of second adsorption stuffing layer 8 is 150 square metres (the first adsorption stuffing layer: the second adsorption stuffing layer=12:3),
Liquid-gas ratio be 1:400 between 1:800, make gas-liquid come into full contact with by be soluble in exhaust gas adsorbent have extracting substances, absorption
Out.The exhaust gas emitted from the first adsorption tower 1 is passed through the second adsorption tower 6, repeats extraction, absorption.By 6 row of the second adsorption tower
The exhaust gas released is passed through third adsorption tower 10, and extraction, absorption are finally reached at blower 13, and blower 13 is every with 5200 cubic metres
Purification gas up to standard is discharged into atmosphere by the air quantity of hour, the wind pressure of 1.5KPA.At the same time, extracted with exhaust gas contact,
Adsorption liquid after absorption flows back into the first liquid reserve tank 5, the second liquid reserve tank 9, third liquid reserve tank 11 under the effect of gravity.
After a period of operation, the adsorbent in the first adsorption tower 1 is by the adsorption concentration of the organic compound in exhaust gas
Up to 20%, start systemic circulation.The first solenoid valve 2 is controlled to be in close state, second solenoid valve 3 is in the open state, and first time
Infusion pump 14 is received to transport the adsorbent in the first adsorption tower 1 and the first liquid reserve tank 5 into the first holding vessel 12；First is defeated simultaneously
Liquid pump 19 sprays the adsorbent in the second adsorption tower 6 and the second liquid reserve tank 9 into the first adsorption tower 1；Second infusion pump simultaneously
20 spray the adsorbent in third adsorption tower 10 and third liquid reserve tank 11 to the second adsorption tower 6, the liquid in third liquid reserve tank 11
Position drops to 10 centimetres constantly, and the second recycling infusion pump 22 starts, and the adsorbent in the second fluid reservoir 16 is added to third storage
In liquid case 11.When 12 accumulation of the first fluid reservoir reaches a certain amount of, recycling separator 17 starts, by the adsorbent of separator well
It is passed through the second fluid reservoir 16, is recycled.When the first adsorption tower 1 and in the first liquid reserve tank 5 adsorbent replacement finish, be again introduced into
The self-loopa stage.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (10)
1. a kind of exhaust treatment system characterized by comprising an adsorption tower or the multiple absorption being sequentially connected in series
Tower, the adsorption tower inside are equipped with the first adsorption stuffing layer (7), and the exhaust port side of the adsorption tower is equipped with the second adsorption stuffing layer
(8)；The two sides up and down of the adsorption tower connect sorbent circulation pipeline.
2. exhaust treatment system according to claim 1, which is characterized in that the adsorption tower includes three, is respectively as follows: the
One adsorption tower (1), the second adsorption tower (6) and third adsorption tower (10), the inlet port connection of the first adsorption tower (1) lower end
Outlet port (18), the inlet port of the exhaust port side connection the second adsorption tower (6) of the first adsorption tower (1) upper end, institute
State the inlet port of exhaust port side connection third adsorption tower (10) of the second adsorption tower (6) upper end；The first of each adsorption tower
Adsorbent inlet tube (111) are connected on the upside of adsorption stuffing layer (7), connect adsorbent outlet tube in the bottom of each adsorption tower
(112)。
3. exhaust treatment system according to claim 1, which is characterized in that the adsorbent inlet tube (111) it is another
End connection adsorbent outlet tube (112), connects respectively between the adsorbent inlet tube (111) and adsorbent outlet tube (112)
Connect the first liquid reserve tank (5), the second liquid reserve tank (9), third liquid reserve tank (11)；The adsorbent inlet tube (111) of first adsorption tower (1)
The other end connection the second adsorption tower (6) bottom, the adsorbent inlet tube (111) of the second adsorption tower (6) the other end connection
The bottom of third adsorption tower (10).
4. exhaust treatment system according to claim 1, which is characterized in that the adsorbent inlet tube (111) it is another
End connection adsorbent outlet tube (112), connects respectively between the adsorbent inlet tube (111) and adsorbent outlet tube (112)
Connect the first liquid reserve tank (5), the second liquid reserve tank (9), third liquid reserve tank (11)；The adsorbent inlet tube (111) of first adsorption tower (1)
The other end be also connected to the bottoms of the second adsorption tower (6), the other end of the adsorbent inlet tube (111) of the second adsorption tower (6) connects
The bottom of logical third adsorption tower (10).
5. exhaust treatment system according to claim 4, which is characterized in that close in the adsorbent inlet tube (111)
Adsorption tower one end is respectively equipped with the first infusion pump (19), the second infusion pump (20), third infusion pump (21), in adsorbent inlet tube
(111) and the first liquid reserve tank (5), the second liquid reserve tank (9), the first solenoid valve (2) are separately connected between third liquid reserve tank (11)；The
Between the adsorbent inlet tube (111) and the second adsorption tower (6) of one adsorption tower (1) and the adsorbent of the second adsorption tower (6) into
Liquid pipe (111) is respectively provided with second solenoid valve (3) between third adsorption tower (10).
6. exhaust treatment system according to claim 5, which is characterized in that the adsorbent of first adsorption tower (1) goes out
Adsorbent recycling separator (17) is connected between liquid pipe (112) and the adsorbent outlet tube (112) of third adsorption tower (10).
7. exhaust treatment system according to claim 1-6, which is characterized in that first adsorption tower (1),
There are multilayer the first adsorption stuffing layer (7), the first adsorption stuffing layer inside two adsorption towers (6) and third adsorption tower (10)
(7) upside is all connected with adsorbent inlet tube (111).
8. exhaust treatment system according to claim 1-6, which is characterized in that first adsorption tower (1)
Cooling system device (15) are connected between inlet port and outlet port；The exhaust port side of third adsorption tower (10) upper end
It connects blower (13).
9. exhaust treatment system according to claim 1-6, which is characterized in that the adsorbent is N- methyl pyrrole
One of or a variety of mixed liquor of pyrrolidone, N- ethyl pyrrolidone and N- N-formyl morpholine N.
10. a kind of waste gas processing method of the exhaust treatment system as described in claim any one of 1-9, which is characterized in that including
Following steps:
S1, the filling absorption in the first liquid reserve tank (5), the second liquid reserve tank (9), third liquid reserve tank (11) of exhaust treatment system
Agent；
S2, the first infusion pump (19) in unlatching adsorbent inlet tube (111), the second infusion pump (20), third infusion pump (21)
And first is connected between (11) in adsorbent inlet tube (111) and the first liquid reserve tank (5), the second liquid reserve tank (9), third liquid reserve tank
Solenoid valve (2) is sprayed at the first liquid reserve tank (5), the second liquid reserve tank (9), the sorbent circulation in third liquid reserve tank (11) often
First adsorption stuffing layer (7) upper surface of a adsorption tower；
S3, exhaust vent (18) flow into after cooling system device (15) cooling treatment, to the first adsorption tower (1) lower end into
Port end is passed through exhaust gas, and the first adsorption stuffing layer (2) that exhaust gas flows through the first adsorption tower (1) is adsorbed by adsorbent, the absorption
Agent under the effect of gravity, flows into the first adsorption tower (1) bottom, flows into the first liquid reserve tank (5) by adsorbent outlet tube (112)
In；
S4, by the first adsorption tower (1) absorption after exhaust gas, the first adsorption tower (1) outlet port (18) be discharged, flow into
The inlet port of second adsorption tower (6), the first adsorption stuffing layer (7) that exhaust gas flows through the second adsorption tower (6) are adsorbed by adsorbent,
The adsorbent under the effect of gravity, flows into the second adsorption tower (6) bottom, flows into the second storage by adsorbent outlet tube (112)
In liquid case (9)；
S5, third is flowed into the outlet port discharge of the second adsorption tower (6) by the exhaust gas after the second adsorption tower (6) absorption
The inlet port of adsorption tower (10), the first adsorption stuffing layer (7) that exhaust gas flows through third adsorption tower (10) are adsorbed by adsorbent, institute
It states adsorbent under the effect of gravity, flows into third adsorption tower (10) bottom, flow into third liquid storage by adsorbent outlet tube (112)
In case (11)；
S6, by third adsorption tower (10) absorption after exhaust gas, blower is passed through by the outlet port of third adsorption tower (10)
(13) it is discharged；
S7, the first liquid reserve tank (5), the second liquid reserve tank (9), to reach setting dense for impurity concentration in adsorbent in third liquid reserve tank (11)
Spend or more when: close and all in adsorbent inlet tube (111) and be separately connected the first liquid reserve tank (5), the second liquid reserve tank (9), the
The adsorbent inlet tube (111) and second for connecting the first solenoid valve (2) between three liquid reserve tanks (11), opening the first adsorption tower (1)
Between adsorption tower (6) and second between third adsorption tower (10) of the adsorbent inlet tube (111) of the second adsorption tower (6)
Solenoid valve (3)；It opens and connects between the adsorbent outlet tube (111) of the first adsorption tower (1) and adsorbent recycling separator (17)
The adsorbent outlet tube (111) of the first recycling infusion pump (14) and third adsorption tower (10) that connect is separated with adsorbent recycling
The second recycling infusion pump (22) connected between device (112)；
S8, first opened on the pipeline for being connected to recycling separator (17) recycle infusion pump (14), the second recycling infusion pump
(22), make in exhaust treatment system: the adsorbent in the first liquid reserve tank (5) of the first adsorption tower (1) flows into adsorbent recycling point
Separating treatment is recycled from device (17)；Adsorbent in the second liquid reserve tank (9) of second adsorption tower (6) flows into the first adsorption tower
(1), it then flows into the first liquid reserve tank (5) of the first adsorption tower (1)；Suction in the third liquid reserve tank (11) of third adsorption tower (10)
Attached dose of the second adsorption tower of inflow (6), then flow into the second liquid reserve tank (9) in the second adsorption tower (6).
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| CN1872393A (en) * | 2006-05-10 | 2006-12-06 | 昆明理工大学 | Method for depriving arsenic fluorin phosphoric acid from tail gas of yellow phosphorus |
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