CN107998821A - A kind of fixed bed zeolite VOC exhaust treatment systems - Google Patents
A kind of fixed bed zeolite VOC exhaust treatment systems Download PDFInfo
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- CN107998821A CN107998821A CN201711492484.6A CN201711492484A CN107998821A CN 107998821 A CN107998821 A CN 107998821A CN 201711492484 A CN201711492484 A CN 201711492484A CN 107998821 A CN107998821 A CN 107998821A
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- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 138
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 239000010457 zeolite Substances 0.000 title claims abstract description 138
- 238000011282 treatment Methods 0.000 title claims abstract description 21
- 238000001179 sorption measurement Methods 0.000 claims abstract description 69
- 238000003795 desorption Methods 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 238000007084 catalytic combustion reaction Methods 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 12
- 238000009833 condensation Methods 0.000 claims abstract description 6
- 230000005494 condensation Effects 0.000 claims abstract description 6
- 230000008676 import Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 86
- 238000000034 method Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 16
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 238000000746 purification Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 9
- 239000003463 adsorbent Substances 0.000 claims description 8
- 239000002808 molecular sieve Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 7
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 7
- 238000006555 catalytic reaction Methods 0.000 claims description 6
- 230000001413 cellular effect Effects 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 5
- 239000002912 waste gas Substances 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- 238000003672 processing method Methods 0.000 claims description 4
- 210000003850 cellular structure Anatomy 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000011045 prefiltration Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 20
- 239000000126 substance Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- -1 by modification Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000007539 photo-oxidation reaction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/30—Physical properties of adsorbents
- B01D2253/34—Specific shapes
- B01D2253/342—Monoliths
- B01D2253/3425—Honeycomb shape
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/41—Further details for adsorption processes and devices using plural beds of the same adsorbent in series
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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 fixed bed zeolite VOC exhaust treatment systems, including pretreatment system, catalytic combustion system, zeolite fixed bed system, desorption system, first condenser, second condenser, 3rd condenser, recovery system, pretreatment system connects zeolite fixed bed system, zeolite fixed bed system includes first, second, 3rd zeolite adsorption fixed bed unit, component outlet on the zeolite adsorption fixed bed system is connected with the entrance of condenser respectively, the outlet of condenser connects the recovery system respectively, condensation tail gas connects the catalytic combustion system by pipeline, the second heat exchanger is connected on the pipeline of combustion chamber rear end, the outlet of combustion chamber is connected with the desorption gas import on zeolite fixed bed system.The object of the present invention is to provide a kind of fixed bed zeolite VOC exhaust treatment systems, handle exhaust gas using zeolite fixed bed, can be not only used for continuously discharging, it can also be used to which intermittence discharge, removal efficiency is high, and later maintenance simply make it that production cost is low.
Description
Technical field
The invention belongs to technical field of waste gas treatment, more particularly to a kind of fixed bed zeolite VOC exhaust treatment systems.
Background technology
VOC gas have become Air Pollutant Discharge, and the main reason of regional haze at present.The VOC of mainstream is controlled
Reason technology has：Activated carbon adsorption, the catalysis of UV photooxidations, zeolite runner.Activated carbon adsorption+RCO has structure as traditional technique
Simply, removal efficiency is high waits a little.But activated carbon adsorption also has shortcoming：Treatment effeciency is low (generally less than 80%)；It cannot locate
Manage flammable explosive gas；Exothermic chemical reaction is produced with some chemicals, there is potential fire risk；Activated carbon can produce powder
End, when these powder are entered in RCO, can produce fire.
Zeolite runner system is used for the VOC gas for handling Wind Volume continuous work, and VOC exhaust gas passes through zeolite runner adsorption zone
Absorption, qualified discharge is into air.The VOC components of absorption rotate to desorption area in runner.Work by RCO systems, by this
A little component desorptions, and decomposed in RCO equipment internal high temperature.The treatment effeciency of zeolite runner can generally achieve more than 95%, inhale
It is attached efficient, and can be used for the processing of flammable explosive gas, hardly chemically reacted with exhaust gas.But at present this
There are bottleneck in practical applications for technology：(1) zeolite pinwheel technique is mainly grasped in several producer's hands abroad, and price is very high,
Domestic minority producer develops domestic zeolite runner, but because of quality problems using less；(2) due to production capacity reason, mesh
Preceding zeolite runner Lead Time is usually more than 6 months；(3) due to technical reason, the market price of zeolite runner is very high, hinders
The extensive use that VOC is administered；(4) apparatus and process is complicated, difficult in maintenance；(5) enterprise continuously discharged is only applicable to, if enterprise
Intermittent discharge, system warm-up can consume the substantial amounts of energy.
The content of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of fixed bed zeolite VOC exhaust treatment systems, zeolite is utilized
Fixed bed handles exhaust gas, can be not only used for continuously discharging, it can also be used to which intermittence discharge, removal efficiency is high, and later maintenance simply makes
It is low to obtain production cost.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of fixed bed zeolite VOC exhaust-gas treatments system
System, including pretreatment system, catalytic combustion system, zeolite fixed bed system, the first condenser, the second condenser, the 3rd condensation
Device, recovery system, the pretreatment system include air blower, air inlet pipeline and pre-filtering device, the air blower by into
Air pipe connects pre-filtering device, and the pre-filtering device connects the zeolite fixed bed system, the zeolite fixed bed
System includes the first zeolite adsorption fixed bed unit, the second zeolite adsorption fixed bed unit, the 3rd zeolite adsorption fixed bed unit,
Component outlet on the zeolite adsorption fixed bed system enters with the first condenser, the second condenser, the 3rd condenser respectively
Mouthful connection, the outlet of first condenser, the second condenser, the 3rd condenser connect the recovery system respectively, described time
Receipts system includes the first retracting device, the second retracting device, the 3rd retracting device, and condensation tail gas connects the catalysis by pipeline
Burner, the catalytic combustion system include combustion chamber, First Heat Exchanger and the second heat exchanger, the chamber front end pipeline
On be connected with First Heat Exchanger, the second heat exchanger of recyclable purification gas heat is connected with the pipeline of the combustion chamber rear end,
The outlet of the combustion chamber is connected with the desorption gas import on zeolite fixed bed system.
Further, it is provided with efficient filter on the pre-filtering device.
Further, the connecting tube between the zeolite fixed bed system and the catalytic combustion system is examined equipped with concentration
Survey device.
Further, the pretreatment system is dry treatment system or wet dedusting system.
Further, the first zeolite adsorption fixed bed unit, the second zeolite adsorption fixed bed unit, the 3rd zeolite are inhaled
The shape of adsorbent is the cube of the 15mm with cellular structures in attached fixed bed unit.
The waste gas processing method comprises the following steps：
(1) pre-process：VOC exhaust gas, which enters in pretreatment system, to be pre-processed, and makes particle concentration and VOC exhaust gas temperature
Degree reaches the requirement of post-processing process；
(2) multicomponent recycles：VOC exhaust gas by pretreatment passes sequentially through the first zeolite adsorption fixed bed unit, second
Adsorbing separation purification is carried out in zeolite adsorption fixed bed unit, the 3rd zeolite adsorption fixed bed unit, passes through zeolite molecular sieve
Segmentation screening, can adsorb the exhaust gas of heterogeneity, Elements in Organic Solvents is by zeolite fixed bed system in different fixed-bed process sections
Zeolite adsorbents made of the cellular hydrophobic material of use in system adsorb, and realize that organic solvent is separated from VOC exhaust gas,
Be purified at the same time by separated VOC exhaust gas, the outlet of component on the zeolite adsorption fixed bed system respectively with condenser
Entrance connection so that separated component is condensed respectively, and the outlet of condenser is connected with the retracting device, and collection has
The component of value is recycled；
(3) it is desorbed：When above-mentioned steps 2) in zeolite fixed bed system purified obtained gas reach exhaust gas concentration row
When putting standard value, the gas of purification is discharged from the purified gas outlet in zeolite adsorption fixed bed unit, while the zeolite adsorption
Fixed bed unit enters desorption and regeneration process, and desorption wind turbine, which is blown, takes desorption gas to adsorbing having in zeolite adsorption fixed bed unit
Solvent is desorbed；
(4) catalysis burning：Condenser tail gas enters catalytic combustion system processing and decomposes remnants VOC, and condenser passes through pipeline
The catalytic combustion system is connected, the catalytic combustion system includes combustion chamber, First Heat Exchanger and the second heat exchanger, the combustion
Burn and be connected with First Heat Exchanger on the front-end pipelines of room, recyclable purification gas heat is connected with the pipeline of the combustion chamber rear end
Second heat exchanger, when the cold exhaust gas of condenser tail gas passes through First Heat Exchanger, First Heat Exchanger discharges the heat of storage, makes exhaust gas
It is heated to required preheating temperature and First Heat Exchanger is cooled in itself；Gas after preheating enters combustion chamber, hot after reacted
When purified gas is by the second heat exchanger, the heat of the second heat exchanger absorption cleaning gas, make gas cooling and the second heat exchanger sheet
Body is heated；
(5) hot-air is desorbed：By the way of steam desorption, the steam after being heated by the second heat exchanger is by adsorption recovery
The organic solvent that is adsorbed of sorbing material is desorbed in bed, and hot-air carried out desorption processing, then by pipeline respectively with the
One zeolite adsorption fixed bed unit, the second zeolite adsorption fixed bed unit, the connection of the 3rd zeolite adsorption fixed bed unit, realization follow
Ring replaces.
The advantage of the invention is that：
1. fixed by the first zeolite adsorption fixed bed unit, the second zeolite adsorption fixed bed unit, the 3rd zeolite adsorption
The segmentation screening of zeolite molecular sieve in bed unit, can adsorb the exhaust gas of heterogeneity in different fixed-bed process sections.Pass through again
Individually desorption, condensation, recycle valuable chemicals.
2. by modification, square cellular hydrophobic material is made in zeolite adsorption material.Meet that certain component is single and concentration
Very high special VOC exhaust gas, can also selectively be adsorbed by selecting the zeolite molecular sieve of unlike material.
3. the present invention can avoid activated carbon and some chemicals from producing exothermic chemical reaction and cause activated carbon and fixed bed
Fire risk, improves production safety.
4. the necessary continuous work of zeolite runner can be replaced using zeolite fixed bed, it is adapted to the enterprise of intermittent discharge, can
System warm-up is avoided to consume mass energy, so as to save the energy.
Brief description of the drawings
, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in describing below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
Put, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the structure diagram of the zeolite adsorption fixed bed unit of the present invention.
Fig. 3 is the fixed bed zeolite VOC waste gas processing method schematic diagrames of the present invention.
Wherein：
1st, cellular porous 2, concentration detector
3rd, the first zeolite adsorption fixed bed unit 4, the second zeolite adsorption fixed bed unit
5th, the 3rd zeolite adsorption fixed bed unit 6, the first condenser
7th, the second condenser 8, the 3rd condenser
9th, the first retracting device 10, the second retracting device
11st, the 3rd retracting device 12, catalytic combustion system
13rd, air blower 14, pre-filtering device
15th, zeolite adsorption fixed bed unit 16, condenser
17th, retracting device
Embodiment
Technical scheme is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
In the description of the present invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Easy to describe the present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for description purpose, and it is not intended that instruction or hint relative importance.
Embodiment 1：
A kind of fixed bed zeolite VOC exhaust treatment systems as shown in Figure 1, 2, including pretreatment system, catalysis burning dress
Put 12, zeolite fixed bed system, the first condenser 6, the second condenser 7, the 3rd condenser 8, recovery system, the pretreatment system
System includes air blower 13, air inlet pipeline and pre-filtering device 14, and the air blower 13 connects prefilter by air inlet pipeline
Device 14, the pre-filtering device 14 connect the zeolite fixed bed system, and the zeolite fixed bed system includes the first boiling
Stone absorption fixed bed unit 3, the second zeolite adsorption fixed bed unit 4, the 3rd zeolite adsorption fixed bed unit 5, the zeolite are inhaled
The entrance that component on attached fixed bed system is exported respectively with the first condenser 6, the second condenser 7, the 3rd condenser 8 is connected,
The outlet of first condenser 6, the second condenser 7, the 3rd condenser 8 connects the recovery system, the recycling system respectively
System includes the first retracting device 9, the second retracting device 10, the 3rd retracting device 11, condense tail gas by pipeline connect described in urge
Change burner 12, the catalytic combustion system 12 includes combustion chamber, First Heat Exchanger and the second heat exchanger, behind the combustion chamber
The second heat exchanger of recyclable purification gas heat, outlet and the zeolite fixed bed system of the combustion chamber are connected with end pipe road
On the import of desorption gas connection, pass through the first zeolite adsorption fixed bed unit 3, the second zeolite adsorption fixed bed unit the 4, the 3rd boil
The segmentation screening of zeolite molecular sieve in stone absorption fixed bed unit 5, can adsorb heterogeneity in different fixed-bed process sections
Exhaust gas.Again by being individually desorbed, condensing, valuable chemicals is recycled.
Further, it is provided with efficient filter on the pre-filtering device 14.
Further, the connecting tube between the zeolite fixed bed system and the catalytic combustion system 12 is equipped with concentration
Detector 2.
Further, the pretreatment system is dry treatment system or wet dedusting system.
Further, the first zeolite adsorption fixed bed unit 3, the second zeolite adsorption fixed bed unit 4, the 3rd zeolite
The shape for adsorbing adsorbent in fixed bed unit 5 is the cube of the 15mm with cellular porous 1 structure.
Above-mentioned zeolite is a kind of natural sorbing material, its specific cavernous structure, it is possible to achieve to different-grain diameter gas
The selection of molecule.For handling the zeolite adsorbents of VOC gas, it is necessary to by modification：Hydrophobicity, the absorption meeting to moisture
Zeolite adsorption material is influenced to the treatment effect of exhaust gas, by modification, zeolite is changed into hydrophobic material；Honeycomb structure：It is logical
Cross and mixed with resin material, tie burning, so that zeolite is changed into the cube of the 15cm with cellular structures, increase zeolite
Adsorptivity, while be easy to use in zeolite fixed bed；Molecule selectivity, zeolite molecules have molecular level gap, this is also boiling
The selective reason of stone, by the zeolite molecular sieve of different structure, can filter different VOC gas, carry out selection
Absorption, activated carbon in activated carbon and fixed bed can be avoided using zeolite and some chemicals produce exothermic chemical reaction or
The powder that person's activated carbon produces is entered in RCO, so that activated carbon and fixed bed fire risk, improves production safety.
Embodiment 2：
As shown in figure 3, what is distinguished with embodiment 1 is that the zeolite fixed bed system includes a zeolite adsorption fixed bed
Unit 15 connects condenser 16, and the condenser connects retracting device 17, can be directed to the gas of one-component, carry out one pack system
Condensation recycling.
Embodiment 3：
With the first two embodiment distinguish be it is described in the first zeolite adsorption fixed bed unit 3, the second zeolite adsorption consolidate
The shape of adsorbent is vertical with circular hole or irregular shape in fixed bed unit 4, the 3rd zeolite adsorption fixed bed unit 5
Cube.
The fixed bed zeolite VOC waste gas processing methods of the present invention comprise the following steps：
(1) pre-process：VOC exhaust gas, which enters in pretreatment system, to be pre-processed, and makes particle concentration and VOC exhaust gas temperature
Degree reaches the requirement of post-processing process；
(2) multicomponent recycles：VOC exhaust gas by pretreatment passes sequentially through the first zeolite adsorption fixed bed unit, second
Adsorbing separation purification is carried out in zeolite adsorption fixed bed unit, the 3rd zeolite adsorption fixed bed unit, passes through zeolite molecular sieve
Segmentation screening, can adsorb the exhaust gas of heterogeneity, Elements in Organic Solvents is by zeolite fixed bed system in different fixed-bed process sections
Zeolite adsorbents made of the cellular hydrophobic material of use in system adsorb, and realize that organic solvent is separated from VOC exhaust gas,
Be purified at the same time by separated VOC exhaust gas, the outlet of component on the zeolite adsorption fixed bed system respectively with condenser
Entrance connection so that separated component is condensed respectively, and the outlet of condenser is connected with the retracting device, and collection has
The component of value is recycled；
(3) it is desorbed：When above-mentioned steps 2) in zeolite fixed bed system purified obtained gas reach exhaust gas concentration row
When putting standard value, the gas of purification is discharged from the purified gas outlet in zeolite adsorption fixed bed unit, while the zeolite adsorption
Fixed bed unit enters desorption and regeneration process, and desorption wind turbine, which is blown, takes desorption gas to adsorbing having in zeolite adsorption fixed bed unit
Solvent is desorbed；
(4) catalysis burning：Condenser tail gas enters catalytic combustion system processing and decomposes remnants VOC, and condenser passes through pipeline
The catalytic combustion system is connected, the catalytic combustion system includes combustion chamber, First Heat Exchanger and the second heat exchanger, the combustion
Burn and be connected with First Heat Exchanger on the front-end pipelines of room, recyclable purification gas heat is connected with the pipeline of the combustion chamber rear end
Second heat exchanger, when the cold exhaust gas of condenser tail gas passes through First Heat Exchanger, First Heat Exchanger discharges the heat of storage, makes exhaust gas
It is heated to required preheating temperature and First Heat Exchanger is cooled in itself；Gas after preheating enters combustion chamber, hot after reacted
When purified gas is by the second heat exchanger, the heat of the second heat exchanger absorption cleaning gas, make gas cooling and the second heat exchanger sheet
Body is heated；This device periodically introduce a gas into different heat exchanger zones, it can be achieved that heat exchanger change with time into
Row heat absorption and exothermic cyclic process, can continuously work automatically, also can save the energy according to operating mode intermittent work.
(5) hot-air is desorbed：By the way of steam desorption, the steam after being heated by the second heat exchanger is by adsorption recovery
The organic solvent that is adsorbed of sorbing material is desorbed in bed, and hot-air carried out desorption processing, then by pipeline respectively with the
One zeolite adsorption fixed bed unit, the second zeolite adsorption fixed bed unit, the connection of the 3rd zeolite adsorption fixed bed unit, realization follow
Ring replaces.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution described in foregoing embodiments, either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (6)
1. a kind of fixed bed zeolite VOC exhaust treatment systems, it is characterised in that including pretreatment system, catalytic combustion system, boiling
Stone fixed bed system, the first condenser, the second condenser, the 3rd condenser, recovery system, the pretreatment system include air blast
Machine, air inlet pipeline and pre-filtering device, the air blower connect pre-filtering device, the prefilter by air inlet pipeline
Device connects the zeolite fixed bed system, and the zeolite fixed bed system includes the first zeolite adsorption fixed bed unit, second
Zeolite adsorption fixed bed unit, the 3rd zeolite adsorption fixed bed unit, the first zeolite adsorption fixed bed unit, the zeolite
The entrance that component on absorption fixed bed system is exported respectively with the first condenser, the second condenser, the 3rd condenser is connected, institute
The outlet for stating the first condenser, the second condenser, the 3rd condenser connects the recovery system respectively, and the recovery system includes
First retracting device, the second retracting device, the 3rd retracting device, condensation tail gas connect the catalytic combustion system by pipeline,
The catalytic combustion system includes combustion chamber, First Heat Exchanger and the second heat exchanger, is connected with the chamber front end pipeline
First Heat Exchanger, the second heat exchanger of recyclable purification gas heat, the burning are connected with the pipeline of the combustion chamber rear end
The outlet of room is connected with the desorption gas import on zeolite fixed bed system.
A kind of 2. fixed bed zeolite VOC exhaust treatment systems according to claim 1, it is characterised in that the preposition mistake
Efficient filter is provided with filter device.
3. a kind of fixed bed zeolite VOC exhaust treatment systems according to claim 1, it is characterised in that the zeolite is consolidated
Connecting tube between fixed bed system and the catalytic combustion system is equipped with concentration detector.
A kind of 4. fixed bed zeolite VOC exhaust treatment systems according to claim 1, it is characterised in that the pretreatment
System is dry treatment system or wet dedusting system.
A kind of 5. fixed bed zeolite VOC exhaust treatment systems according to claim 1, it is characterised in that first boiling
The shape of adsorbent in stone absorption fixed bed unit, the second zeolite adsorption fixed bed unit, the 3rd zeolite adsorption fixed bed unit
For the cube of the 15mm with cellular structures.
6. a kind of fixed bed zeolite VOC waste gas processing methods according to any one of the claim 1-5 exhaust treatment systems, its
It is characterized in that, the treating method comprises following steps：
(1) pre-process：VOC exhaust gas, which enters in pretreatment system, to be pre-processed, and reaches particle concentration and VOC exhaust gas temperature
To the requirement of post-processing process；
(2) multicomponent recycles：VOC exhaust gas by pretreatment passes sequentially through the first zeolite adsorption fixed bed unit, the second zeolite
Adsorb and adsorbing separation purification is carried out in fixed bed unit, the 3rd zeolite adsorption fixed bed unit, pass through the segmentation of zeolite molecular sieve
Screening, can adsorb the exhaust gas of heterogeneity, Elements in Organic Solvents is by zeolite fixed bed system in different fixed-bed process sections
The cellular hydrophobic material of use made of zeolite adsorbents absorption, realize that organic solvent is separated from VOC exhaust gas, pass through
Separated VOC exhaust gas is purified at the same time, and component on zeolite adsorption fixed bed system outlet enters with condenser respectively
Mouth connection so that separated component is condensed respectively, and the outlet of condenser is connected with the retracting device, is collected valuable
Component recycled；
(3) it is desorbed：When above-mentioned steps 2) in zeolite fixed bed system purified obtained gas reach exhaust gas concentration discharge mark
During quasi- value, the gas of purification is from the purified gas outlet discharge in zeolite adsorption fixed bed unit, while the zeolite adsorption is fixed
Bed unit enters desorption and regeneration process, and desorption wind turbine, which is blown, takes desorption gas organic molten in zeolite adsorption fixed bed unit to adsorbing
Agent is desorbed；
(4) catalysis burning：Condenser tail gas enters catalytic combustion system processing and decomposes remnants VOC, and condenser is connected by pipeline
The catalytic combustion system, the catalytic combustion system include combustion chamber, First Heat Exchanger and the second heat exchanger, the combustion chamber
First Heat Exchanger is connected with front-end pipelines, the second of recyclable purification gas heat is connected with the pipeline of the combustion chamber rear end
Heat exchanger, when the cold exhaust gas of condenser tail gas passes through First Heat Exchanger, First Heat Exchanger discharges the heat of storage, heats exhaust gas
To required preheating temperature, First Heat Exchanger is cooled in itself；Gas after preheating enters combustion chamber, reacted rear thermal purification
When gas is by the second heat exchanger, the heat of the second heat exchanger absorption cleaning gas, make gas cooling and the second heat exchanger in itself by
Heating；
(5) hot-air is desorbed：By the way of steam desorption, the steam after being heated by the second heat exchanger is by adsorption recovery bed
The organic solvent that sorbing material is adsorbed is desorbed, and hot-air is carried out desorption processing, then boiled respectively with first by pipeline
Stone absorption fixed bed unit, the second zeolite adsorption fixed bed unit, the connection of the 3rd zeolite adsorption fixed bed unit, realize that circulation is handed over
Replace.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109107385A (en) * | 2018-10-29 | 2019-01-01 | 上海盛剑环境系统科技股份有限公司 | A kind of VOCs gas handling system |
| CN110812876A (en) * | 2019-12-23 | 2020-02-21 | 麦德科技(无锡)有限公司 | Emission reduction system of organic solvent cleaning equipment |
| CN115318056A (en) * | 2022-08-09 | 2022-11-11 | 南京工业大学 | VOCs zeolite adsorption concentration catalytic combustion treatment system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000029194A (en) * | 1998-10-22 | 2000-05-25 | 조안 엠. 젤사 ; 로버트 지. 호헨스타인 ; 도로시 엠. 보어 | Pressure swing adsorption method for production of an oxygen-enriched gas |
| CN101370564A (en) * | 2005-08-08 | 2009-02-18 | 琳德股份有限公司 | System and method for purifying a gas |
| CN103588173A (en) * | 2013-11-05 | 2014-02-19 | 太仓中化环保化工有限公司 | Method for purifying byproduct hydrogen chloride in fluorinated alkane production |
| CN204563876U (en) * | 2015-02-04 | 2015-08-19 | 青岛黑猫炭黑科技有限责任公司 | A kind of device of carbon black tail gas gas separaion |
| CN105032042A (en) * | 2015-08-03 | 2015-11-11 | 沭阳嘉盛再生资源有限公司 | Full-automatic waste gas, waste water and waste residue treatment system |
| CN105749695A (en) * | 2016-04-22 | 2016-07-13 | 南京大学环境规划设计研究院有限公司 | Low concentration, large wind volume and high odor waste gas concentration energization equipment and technology thereof |
| CN205517125U (en) * | 2016-04-12 | 2016-08-31 | 贵州蔚蓝环保有限公司 | System for purifying and recovering organic waste gas |
| CN207941357U (en) * | 2017-12-30 | 2018-10-09 | 和和乐和（天津）环境科技有限公司 | A kind of fixed bed zeolite VOC exhaust treatment systems |
-
2017
- 2017-12-30 CN CN201711492484.6A patent/CN107998821A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000029194A (en) * | 1998-10-22 | 2000-05-25 | 조안 엠. 젤사 ; 로버트 지. 호헨스타인 ; 도로시 엠. 보어 | Pressure swing adsorption method for production of an oxygen-enriched gas |
| CN101370564A (en) * | 2005-08-08 | 2009-02-18 | 琳德股份有限公司 | System and method for purifying a gas |
| CN103588173A (en) * | 2013-11-05 | 2014-02-19 | 太仓中化环保化工有限公司 | Method for purifying byproduct hydrogen chloride in fluorinated alkane production |
| CN204563876U (en) * | 2015-02-04 | 2015-08-19 | 青岛黑猫炭黑科技有限责任公司 | A kind of device of carbon black tail gas gas separaion |
| CN105032042A (en) * | 2015-08-03 | 2015-11-11 | 沭阳嘉盛再生资源有限公司 | Full-automatic waste gas, waste water and waste residue treatment system |
| CN205517125U (en) * | 2016-04-12 | 2016-08-31 | 贵州蔚蓝环保有限公司 | System for purifying and recovering organic waste gas |
| CN105749695A (en) * | 2016-04-22 | 2016-07-13 | 南京大学环境规划设计研究院有限公司 | Low concentration, large wind volume and high odor waste gas concentration energization equipment and technology thereof |
| CN207941357U (en) * | 2017-12-30 | 2018-10-09 | 和和乐和（天津）环境科技有限公司 | A kind of fixed bed zeolite VOC exhaust treatment systems |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109107385A (en) * | 2018-10-29 | 2019-01-01 | 上海盛剑环境系统科技股份有限公司 | A kind of VOCs gas handling system |
| CN110812876A (en) * | 2019-12-23 | 2020-02-21 | 麦德科技(无锡)有限公司 | Emission reduction system of organic solvent cleaning equipment |
| CN115318056A (en) * | 2022-08-09 | 2022-11-11 | 南京工业大学 | VOCs zeolite adsorption concentration catalytic combustion treatment system |
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Application publication date: 20180508 |