CN106039995A - Integrated VOCs adsorption concentration-catalytic oxydative degradation turning wheel device and process thereof - Google Patents
Integrated VOCs adsorption concentration-catalytic oxydative degradation turning wheel device and process thereof Download PDFInfo
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- CN106039995A CN106039995A CN201610542962.9A CN201610542962A CN106039995A CN 106039995 A CN106039995 A CN 106039995A CN 201610542962 A CN201610542962 A CN 201610542962A CN 106039995 A CN106039995 A CN 106039995A
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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- 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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- 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
- B01D53/06—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 moving adsorbents, e.g. rotating beds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses an integrated VOCs adsorption concentration-catalytic oxydative degradation turning wheel device and a process thereof. The device comprises a turning wheel, a first pump, a heater, a second pump and a motor, wherein the turning wheel comprises a turning wheel adsorption area and a turning wheel catalytic oxidation area, the turning wheel is connected with the motor through a conveyer belt, and the turning wheel adsorption area is connected with the first pump; an outlet of the turning wheel catalytic oxidation area is connected with the second pump, an inlet of the turning wheel catalytic oxidation area is connected with the heater, and a difunctional adsorptive catalyst is evenly attached to the turning wheel. The core of the turning wheel, namely the difunctional adsorptive catalysis material is a supported metallic oxide or mixed metallic oxide material. By the adoption of the integrated VOCs adsorption concentration-catalytic oxydative degradation turning wheel device, continuous purification of VOCs in industrial exhaust gas is achieved through adsorption-regeneration circulating operation, and the state standard of industrial exhaust gas discharge is met.
Description
Technical field
The present invention relates to a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner and difunctional adsoption catalysis material thereof
Material, belongs to the gas purification technique field of organic gas Adsorption Concentration-catalyzing oxidizing degrading in industrial tail gas.
Background technology
VOC VOCs (Volatile Organic Compounds) be a class have higher vapor pressure,
Organic compound readily volatilized under normal temperature and pressure, such as ([1] Wus such as benzene,toluene,xylene, dichloromethane, aldehyde, ester, alcohol, ketone
Literary composition forever, Li Zhong, Xi Hongxia, Xu Kefeng, Han Jinglei, Guo Jianguang, VOCs pollution control technology and adsoption catalysis material).VOCs is wide
General derive from ([2] Chang CT, the Lee such as fine chemistry industry, petrochemical industry, pharmacy, electronic components fabrication, printing, vehicle exhaust
CH, Wu YP, etc.Resources, Conservation and Recylcing, 2002,34,117), it is discharged in air
Environment is caused high risks, as damaged the ozone layer, forms photochemical fog, cause haze etc.；Also health is caused pole
Big threat, as caused the most carcinogenic grade of respiratory tract disease (Sun Tieyan, Zhou Qixing, Li Peijun, pollution ecology, Beijing: science goes out
Version society, 2001).Therefore, the control of VOCs is paid much attention to by countries in the world government, has promulgated the strictest industrial tail gas
Discharge standard.Therefore, effective VOCs Treatment process is developed extremely urgent.
Currently, for middle low concentration (100～2000mg/m3) VOCs Environmental capacity, mainly have absorption, catalysis burning,
Photocatalytic degradation, plasma technique, direct burning etc..Wherein, rotary-type absorption is considered as a kind of cost-effective control
Reason technology, has also had application in the improvement of industrial tail gas VOCs.Rotary-type absorption is that one can be carried out continuously absorption and desorption
Gas purification technique, it is mainly carried out the VOCs in adsorbed gas, thus realizes the mesh of gas purification by the adsorption zone of runner
Mark；Meanwhile, constantly proceed to be desorbed district at the VOCs of adsorption zone enrichment, be reversed the hot-air desorption desorbing of purging, desorption
The adsorbent in district is regenerated and constantly proceeds to adsorption zone and carries out adsorption operations；And the VOCs being desorbed from desorption district is collected
Get up to focus on.
But, there is certain bottleneck in current VOCs pinwheel technique, specifically includes that (1) VOCs is through runner enrichment-desorbing
After still need to aftertreatment device, as by one catalysis burning apparatus for destroying carry out thorough degraded etc., structure is the compactest, energy consumption and
Cost is the highest；(2) existing VOCs adsorption-regeneration runner VOCs in regenerative process is difficult to remove completely, causes runner to follow
When ring uses, adsorption efficiency can constantly decline, so that intermittent shut-down, is the VOCs being difficult to desorption on runner into one
Step processes.
Summary of the invention
In order to overcome the shortcoming of prior art with not enough, the primary and foremost purpose of the present invention is to provide a kind of integral type VOCs to inhale
Attached concentration-catalyzing oxidizing degrading rotary wheel device and technique thereof.This integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner knot
Structure is compact, and energy consumption and regeneration cost are the lowest, recycles performance continuously stable, can grasp at adsorption-regeneration cycles
The seriality realizing VOCs in industrial tail gas under work purifies, and reaches the discharging standards of industrial tail gas, for industry organic tail gas
Improvement provide important references.
The purpose of the present invention is achieved through the following technical solutions:
A kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device, including runner, circular housing, the first pump,
Heater, the second pump, motor, circular housing and axle；Described runner includes runner adsorption zone and runner catalysis zoneofoxidation；
Described runner is connected with motor by conveyer belt；Described runner is arranged at inside circular housing by axle；Described
One pump is connected with circular housing；Described second pump is connected with circular housing；Described heater is connected with circular housing；Described runner
On be uniformly attached with difunctional adsorption catalyst；Wherein, described first pump and circular housing junction are just trivial to runner absorption
Territory, described second pump and circular housing junction are just to runner catalysis zoneofoxidation region, and described heater is connected with circular housing
Place is just catalyzed zoneofoxidation to runner.
Further, the area ratio of described runner adsorption zone and runner catalysis zoneofoxidation is 1/7～1/2.
Further, the material morphology of described difunctional adsorption catalyst is honeycomb fashion, corrugated or particle type；Substrate material
Material is cordierite, aluminium oxide, pure silicon molecular sieve, HTS or Si-Al molecular sieve；Load active component is metal-oxide
Or mixed-metal oxides；Preparation method is infusion process, coprecipitation.
Further, in described difunctional adsorption catalyst, metal-oxide mass percent is 0.5～20wt.%, than
Surface area is 25～1000m2/ g range, aperture size is in 1.2～4.0nm scopes, and pore volume is 0.2～0.8cm3/ g range.
A kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner, its structure is:
A) runner is divided into two fan sections, runner adsorption zone and runner catalysis zoneofoxidation composition；Runner at room temperature adsorbs
District realizes the Adsorption Concentration of VOCs, and the runner catalysis zoneofoxidation in heating realizes concentrating the catalysis of VOCs and aoxidizes degradable one-tenth
CO2And water, meanwhile, the difunctional adsorption catalyst itself in runner catalysis zoneofoxidation is regenerated, and rotates back into runner and inhales
Attached district recycles；
B) difunctional adsorption catalyst uniformly it is attached with on runner.
A kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner technique, comprises the steps:
A) organic exhaust gas is brought into runner adsorption zone by pump, and the VOCs in waste gas adsorbs in runner adsorption zone, discharges clean
Activating QI body；
B), when the material on runner adsorption zone tends to adsorbing saturated, runner catalysis zoneofoxidation is proceeded to, in high temperature air atmosphere
Under, the VOCs that runner concentrates is adsorbed the be catalyzed oxidation of catalytic sites of catalyst surface, generates CO2Discharge with water；Runner is urged
The difunctional adsorption catalyst itself changed in zoneofoxidation (2) is regenerated；
C) adsorption catalyst through regeneration rotates back into the recycling of runner adsorption zone.
In above-mentioned technique, the temperature of described runner adsorption zone is 20～30 DEG C, and the temperature of described runner catalysis zoneofoxidation is
150～300 DEG C.
In above-mentioned technique, the concentration of described organic exhaust gas is 100～2000mg/m3。
VOCs Adsorption Concentration-catalyzing oxidizing degrading rotaring wheel structure of the present invention is simple, and in conjunction with Fig. 1, its operation principle is:
1. organic exhaust gas is brought into runner adsorption zone 1 by pump, and the VOCs in waste gas is by adsoption catalysis material in runner adsorption zone 1
The adsorption potential on surface is adsorbed, thus is purified, and the air after purification is then sent by pressure fan 3.Along with absorption VOCs's
Increase, runner adsorption zone 1 gradually saturation.In order to maintain the performance of its stable adsorbing and removing VOCs, it is necessary to right
Adsorption catalyst in runner regenerates, and now, tends to saturated runner under the driving of motor 6, slowly proceeds to renewing zone
Territory, starts regenerative process.
2. air forward after heater 4 heats is blown into runner catalysis zoneofoxidation 2, at high operating temperatures, dense on runner
The VOCs of contracting is adsorbed the be catalyzed oxidation of catalytic sites of catalyst surface, generates CO2And water, guided discharge by blower fan 5；Same with this
Time, the difunctional adsorption catalyst itself in runner catalysis zoneofoxidation 2 is regenerated, and has recovered absorbability, driving of motor 6
Under Dong, rotate back into runner adsorption zone 1 and recycle.
3. adsorption catalyst is difunctional absorption-catalysis material, and its surface configures VOCs adsorption potential and catalytic sites simultaneously: inhale
Attached position can adsorb the VOCs in waste gas at normal temperatures；Catalytic sites can be catalyzed oxidized surface Adsorption Concentration under high temperature air atmosphere
VOCs；Catalytic sites and adsorption potential can be identical or different.
The present invention, relative to existing VOCs adsorption-regeneration pinwheel technique, has such advantages as and effect:
1. compact conformation, energy consumption and cost all can reduce: existing VOCs adsorption-regeneration runner is only capable of realizing VOCs in waste gas
Concentration, follow-up still need to concentrate VOCs carry out post processing, as increase catalytic combustion reactor；And integral type VOCs of the present invention
Adsorption Concentration-catalyzing oxidizing degrading runner, under adsorption-regeneration cycles operates, is only achieved that in industrial tail gas by runner
The seriality of VOCs purifies, it is not necessary to carry out follow-up reprocessing；
2. recycle performance continuously stable: during existing VOCs adsorption-regeneration rotary wheel regeneration, VOCs is difficult to take off completely
Removing, when causing runner to recycle, adsorption efficiency the most constantly declines；And integral type VOCs Adsorption Concentration of the present invention-catalysis oxidation fall
During solving rotary wheel regeneration, VOCs can be fully converted into CO2And water, easily it is desorbed, thus ensure that the property that runner recycles continuously
Stabilizability, reaches the discharging standards of industrial tail gas.
Accompanying drawing explanation
Fig. 1 is integrated Formula V OCs Adsorption Concentration-catalyzing oxidizing degrading runner schematic diagram；
Fig. 2 is integrated Formula V OCs Adsorption Concentration-catalyzing oxidizing degrading runner front schematic view；
Fig. 3 is the connection diagram solving runner with motor.
In figure, all parts is as follows:
Runner adsorption zone 1, runner catalysis zoneofoxidation the 2, first pump 3, heater the 4, second pump 5, motor 6, circular housing 7,
Axle 8.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described further, but embodiments of the present invention are not limited to
This.
A kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device, including runner, circular housing, the first pump
3, heater the 4, second pump 5, motor 6, circular housing 7 and axle 8；Described runner includes runner adsorption zone 1 and runner catalysis oxidation
District 2；Described runner is connected with motor 6 by conveyer belt；It is internal that described runner is arranged at circular housing 7 by axle 8；Described first
Pump 3 is connected with circular housing 7；Described second pump 5 is connected with circular housing 7；Described heater 4 is connected with circular housing 7；Described
Difunctional adsorption catalyst uniformly it is attached with on runner；Wherein, runner is just inhaled by described first pump 3 with circular housing 7 junction
Region, attached district 1, described second pump 5 is just being catalyzed zoneofoxidation 2 region, described heater 4 and circle with circular housing 7 junction to runner
Shape shell 7 junction is just catalyzed zoneofoxidation 2 to runner.The area ratio of described runner adsorption zone 1 and runner catalysis zoneofoxidation 2 is
1/7～1/2.The material morphology of described difunctional adsorption catalyst is honeycomb fashion, corrugated or particle type；Base material is that violet is blue or green
Stone, aluminium oxide, pure silicon molecular sieve, HTS or Si-Al molecular sieve；Load active component is metal-oxide or mixing gold
Belong to oxide；Preparation method is infusion process, colloidal sol fixation, coprecipitation.In described difunctional adsorption catalyst, burning
Thing mass percent is 0.5～20wt.%, and specific surface area is 25～1000m2/ g, aperture size is 1.2～4.0nm, and pore volume exists
0.2～0.8cm3/g。
Embodiment 1
(1) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device:
Runner is divided into two fan sections, runner adsorption zone 1 and runner catalysis zoneofoxidation 2 and forms, runner adsorption zone 1 and runner
The area ratio of catalysis zoneofoxidation 2 is 1/3；Uniformly being attached with difunctional adsorption catalyst on runner, its material morphology is honeycomb
Formula；Base material is cordierite；Load active component is Pd-Ce mixed-metal oxides；Preparation method is infusion process.Concrete system
Preparation Method is: by Ce (NO3)3·6H2O 20ml, 0.35mol/L aqueous impregnation in cordierite 10g, 120 DEG C of dry 10h,
400 DEG C of calcining 4h；Then by acidity PdCl2(pH=2.5) solution 5ml, 0.19mol/L impregnated in above-mentioned carrier, do for 120 DEG C
Dry 10h, 400 DEG C of calcining 4h, prepare the difunctional adsorption catalyst of Pd-Ce/ cordierite.
(2) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner technique:
Concentration is 500mg/m3Organic exhaust gas brought into the runner adsorption zone 1 that temperature is 25 DEG C, the VOCs in waste gas by pump
Adsorb in runner adsorption zone 1, discharge and purify gas；When material on runner adsorption zone 1 tends to adsorbing saturated, slowly proceed to
Temperature is the runner catalysis zoneofoxidation 2 of 200 DEG C, and at 200 DEG C, the VOCs that runner concentrates is adsorbed the catalysis of catalyst surface
Position is catalyzed oxidation, generates CO2Discharge with water；Difunctional adsorption catalyst itself in runner catalysis zoneofoxidation 2 is regenerated；
Adsorption catalyst through regenerating rotates back into runner adsorption zone 1 and recycles.VOCs clearance > 98%, reach the state of industrial tail gas
Family's discharge standard.
Embodiment 2
(1) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device:
Runner is divided into two fan sections, runner adsorption zone 1 and runner catalysis zoneofoxidation 2 and forms, runner adsorption zone 1 and runner
The area ratio of catalysis zoneofoxidation 2 is 1/7；Uniformly being attached with difunctional adsorption catalyst on runner, its material morphology is granule
Formula；Base material is gama-alumina；Load active component is Cu-Mn-Ce-Zr mixed-metal oxides；Preparation method is coprecipitated
Shallow lake method.Concrete preparation method is: by Cu (NO3)21.05g, Mn (NO3)21.26g, CeO20.88g, Zr (OH)41.65g it is molten
Solution, in 100ml deionized water, is made into saline solution, adds in gama-alumina 10g, slowly adds people using ammonia as precipitant anti-
Answering in solution, regulation pH value is 12, is aged 12h, filters, washing, is dried 2h, 400 DEG C of calcining 4h, prepares Cu-Mn-at 90 DEG C
The difunctional adsorption catalyst of Ce-Zr/ gama-alumina.
(2) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner technique:
Concentration is 200mg/m3Organic exhaust gas brought into the runner adsorption zone 1 that temperature is 20 DEG C, the VOCs in waste gas by pump
Adsorb in runner adsorption zone 1, discharge and purify gas；When material on runner adsorption zone 1 tends to adsorbing saturated, slowly proceed to
Temperature is the runner catalysis zoneofoxidation 2 of 300 DEG C, and under 300 DEG C of air atmospheres, the VOCs that runner concentrates is adsorbed catalyst table
The be catalyzed oxidation of catalytic sites in face, generates CO2Discharge with water；Difunctional adsorption catalyst itself in runner catalysis zoneofoxidation 2
Regenerated；Adsorption catalyst through regenerating rotates back into runner adsorption zone 1 and recycles.VOCs clearance > 95%, reach industry
The discharging standards of tail gas.
Embodiment 3
(1) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device:
Runner is divided into two fan sections, runner adsorption zone 1 and runner catalysis zoneofoxidation 2 and forms, runner adsorption zone 1 and runner
The area ratio of catalysis zoneofoxidation 2 is 1/2；Uniformly being attached with difunctional adsorption catalyst on runner, its material morphology is Concha Arcae
Formula；Base material is pure silicon molecular sieve；Load active component is Pt-Ce mixed-metal oxides；Preparation method is coprecipitation.
Concrete preparation method is: by H2PtCl6·6H2O 5ml, 0.19mol/L and Ce (NO3)3·6H2O 20ml, 0.35mol/L are water-soluble
The mixed solution of liquid adds pure silicon molecular sieve 10g, with 0.1mol/L NaOH aqueous solution regulation pH value to about 8.5, at 80 DEG C
Stirring 1h, filters, washing, 100 DEG C of dry 10h, 400 DEG C of calcining 2h, prepares the Pt-Ce/ difunctional adsoption catalysis of pure silicon molecular sieve
Agent.
(2) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner technique:
Concentration is 500mg/m3Organic exhaust gas brought into the runner adsorption zone 1 that temperature is 28 DEG C, the VOCs in waste gas by pump
Adsorb in runner adsorption zone 1, discharge and purify gas；When material on runner adsorption zone 1 tends to adsorbing saturated, slowly proceed to
Temperature is the runner catalysis zoneofoxidation 2 of 150 DEG C, and under 150 DEG C of air atmospheres, the VOCs that runner concentrates is adsorbed catalyst table
The be catalyzed oxidation of catalytic sites in face, generates CO2Discharge with water；Difunctional adsorption catalyst itself in runner catalysis zoneofoxidation 2
Regenerated；Adsorption catalyst through regenerating rotates back into runner adsorption zone 1 and recycles.VOCs clearance > 95%, reach industry
The discharging standards of tail gas.
Embodiment 4
(1) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device:
Runner is divided into two fan sections, runner adsorption zone 1 and runner catalysis zoneofoxidation 2 and forms, runner adsorption zone 1 and runner
The area ratio of catalysis zoneofoxidation 2 is 1/4；Uniformly being attached with difunctional adsorption catalyst on runner, its material morphology is granule
Formula；Base material is HTS；Load active component is Ag-Fe mixed-metal oxides；Preparation method is coprecipitation.
Concrete preparation method is: by AgNO35ml, 0.19mol/L and Fe (NO3)2The mixed solution of aqueous solution 20ml, 1.05mol/L
Middle addition HTS, with 0.1mol/L NaOH aqueous solution regulation pH value to 12, precipitates aging 5h, filters, washing, 100 DEG C
It is dried 10h, 400 DEG C of calcining 2h, prepares the difunctional adsorption catalyst of Ag-Fe/ HTS.
(2) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner technique:
Concentration is 100mg/m3Organic exhaust gas brought into the runner adsorption zone 1 that temperature is 25 DEG C, the VOCs in waste gas by pump
Adsorb in runner adsorption zone 1, discharge and purify gas；When material on runner adsorption zone 1 tends to adsorbing saturated, slowly proceed to
Temperature is the runner catalysis zoneofoxidation 2 of 250 DEG C, and under 250 DEG C of air atmospheres, the VOCs that runner concentrates is adsorbed catalyst table
The be catalyzed oxidation of catalytic sites in face, generates CO2Discharge with water；Difunctional adsorption catalyst itself in runner catalysis zoneofoxidation 2
Regenerated；Adsorption catalyst through regenerating rotates back into runner adsorption zone 1 and recycles.VOCs clearance > 98%, reach industry
The discharging standards of tail gas.
Embodiment 5
(1) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device:
Runner is divided into two fan sections, runner adsorption zone 1 and runner catalysis zoneofoxidation 2 and forms, runner adsorption zone 1 and runner
The area ratio of catalysis zoneofoxidation 2 is 1/5；Uniformly being attached with difunctional adsorption catalyst on runner, its material morphology is honeycomb
Formula；Base material is Si-Al molecular sieve；Load active component is Pd-Ni mixed-metal oxides；Preparation method is infusion process.Tool
Preparation is: by Ni (NO3)2Aqueous solution 20ml, 0.70mol/L are immersed in 10g Si-Al molecular sieve, 120 DEG C of dry 10h,
400 DEG C of calcining 4h；Then by acidity PdCl2 (pH=2.5) solution 5ml, 0.19mol/L impregnated in above-mentioned carrier, does for 120 DEG C
Dry 10h, 400 DEG C of calcining 4h, prepare the difunctional adsorption catalyst of Pd-Ni/ Si-Al molecular sieve.
(2) a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner technique:
Concentration is 1500mg/m3Organic exhaust gas brought into the runner adsorption zone 1 that temperature is 30 DEG C, the VOCs in waste gas by pump
Adsorb in runner adsorption zone 1, discharge and purify gas；When material on runner adsorption zone 1 tends to adsorbing saturated, slowly proceed to
Temperature is the runner catalysis zoneofoxidation 2 of 200 DEG C, and under 200 DEG C of air atmospheres, the VOCs that runner concentrates is adsorbed catalyst table
The be catalyzed oxidation of catalytic sites in face, generates CO2Discharge with water；Difunctional adsorption catalyst itself in runner catalysis zoneofoxidation 2
Regenerated；Adsorption catalyst through regenerating rotates back into runner adsorption zone 1 and recycles.VOCs clearance > 95%, reach industry
The discharging standards of tail gas.
The present invention proposes a kind of integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading runner technique, and it uses adsoption catalysis
The pore structure of agent, VOCs degradation property are as follows:
(1) pore structure
U.S.'s Micromeritics ASAP 2010 type specific surface area and distribution of pores tester is used to test the present invention
Specific surface area (the S of the serial adsorption catalyst of preparationBET), pore-size distribution (Pore size) and pore volume (VTotal), result such as table 1
Shown in.Table 1 illustrates, the specific surface area of adsorption catalyst is 25～1000m2/ g range, aperture size in 1.2～4.0nm scopes,
Pore volume is 0.2～0.8cm3/ g range.
The pore structure parameter of 5 kinds of adsorption catalysts in table 1 embodiment of the present invention
(2) mensuration of VOCs concentration
Application portable V OCs detector measures the import and export concentration of VOCs in tail gas, is calculated VOCs clearance.Five
The VOCs clearance of individual embodiment is respectively 98, and 95,95,98,95%, reach the discharging standards of industrial tail gas.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment
Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (7)
1. integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device, it is characterised in that include outside runner, circle
Shell, the first pump (3), heater (4), the second pump (5), motor (6), circular housing (7) and axle (8)；Described runner includes runner
Adsorption zone (1) and runner catalysis zoneofoxidation (2)；
Described runner is connected with motor (6) by conveyer belt；It is internal that described runner is arranged at circular housing (7) by axle (8)；Institute
State the first pump (3) to be connected with circular housing (7)；Described second pump (5) is connected with circular housing (7)；Described heater (4) and circle
Shape shell (7) connects；Difunctional adsorption catalyst uniformly it is attached with on described runner；Wherein, outside described first pump (3) is with circle
Shell (7) junction is just to runner adsorption zone (1) region, and runner is just catalyzed by described second pump (5) and circular housing (7) junction
Zoneofoxidation (2) region, described heater (4) and circular housing (7) junction are just to runner catalysis zoneofoxidation (2).
Integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device the most according to claim 1, it is characterised in that institute
The area ratio stating runner adsorption zone (1) and runner catalysis zoneofoxidation (2) is 1/7 ~ 1/2.
Integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device the most according to claim 1, it is characterised in that institute
The material morphology stating difunctional adsorption catalyst is honeycomb fashion, corrugated or particle type；Base material be cordierite, aluminium oxide,
Pure silicon molecular sieve, HTS or Si-Al molecular sieve；Load active component is metal-oxide or mixed-metal oxides；System
Preparation Method is infusion process, colloidal sol fixation, coprecipitation.
Integral type VOCs Adsorption Concentration-catalyzing oxidizing degrading rotary wheel device the most according to claim 1, it is characterised in that institute
Stating in difunctional adsorption catalyst, metal-oxide mass percent is 0.5 ~ 20 wt.%, and specific surface area is at 25 ~ 1000 m2/
G, aperture size is at 1.2 ~ 4.0 nm, and pore volume is at 0.2 ~ 0.8 cm3/g。
5. one kind utilizes the technique of device Adsorption Concentration-catalyzing oxidizing degrading VOCs described in claim 1, it is characterised in that bag
Include following steps:
A) organic exhaust gas is brought into runner adsorption zone (1) by the first pump (3), and the VOCs in waste gas inhales in runner adsorption zone (1)
Attached, discharge and purify gas；
B), when the material on runner adsorption zone (1) tends to adsorbing saturated, runner catalysis zoneofoxidation (2) is proceeded to, at high temperature air gas
Under atmosphere, the VOCs that runner concentrates is adsorbed the be catalyzed oxidation of catalytic sites of catalyst surface, generates CO2Discharge with water；Runner
Difunctional adsorption catalyst itself in catalysis zoneofoxidation (2) is regenerated；
C) adsorption catalyst through regeneration rotates back into runner adsorption zone (1) recycling.
Technique the most according to claim 5, it is characterised in that the temperature of described runner adsorption zone (1) is 20 ~ 30 DEG C, institute
The temperature stating runner catalysis zoneofoxidation (2) is 150 ~ 300 DEG C.
Technique the most according to claim 5, it is characterised in that the concentration of described organic exhaust gas is 100 ~ 2000 mg/m3。
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| CN106669417A (en) * | 2017-01-04 | 2017-05-17 | 佛山市顺德区阿波罗环保器材有限公司 | Device for removing gaseous pollutants through heating |
| CN111495187A (en) * | 2020-04-26 | 2020-08-07 | 安徽顺达环保科技股份有限公司 | Non-stop replacement device and method for dry desulfurization and denitrification catalyst |
| CN112973436A (en) * | 2021-02-03 | 2021-06-18 | 浙江天蓝环保技术股份有限公司 | Device and process for in-situ degradation of VOCs (volatile organic compounds) by cooperation of rotating wheel adsorption concentration and high-energy ionization and photocatalysis |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106669417A (en) * | 2017-01-04 | 2017-05-17 | 佛山市顺德区阿波罗环保器材有限公司 | Device for removing gaseous pollutants through heating |
| CN111495187A (en) * | 2020-04-26 | 2020-08-07 | 安徽顺达环保科技股份有限公司 | Non-stop replacement device and method for dry desulfurization and denitrification catalyst |
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| CN112973436A (en) * | 2021-02-03 | 2021-06-18 | 浙江天蓝环保技术股份有限公司 | Device and process for in-situ degradation of VOCs (volatile organic compounds) by cooperation of rotating wheel adsorption concentration and high-energy ionization and photocatalysis |
| CN112973436B (en) * | 2021-02-03 | 2023-01-24 | 浙江天蓝环保技术股份有限公司 | Device and process for in-situ degradation of VOCs (volatile organic compounds) by cooperation of rotating wheel adsorption concentration and high-energy ionization and photocatalysis |
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