CN115318056A - VOCs zeolite adsorption concentration catalytic combustion treatment system - Google Patents
VOCs zeolite adsorption concentration catalytic combustion treatment system Download PDFInfo
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- CN115318056A CN115318056A CN202210947353.7A CN202210947353A CN115318056A CN 115318056 A CN115318056 A CN 115318056A CN 202210947353 A CN202210947353 A CN 202210947353A CN 115318056 A CN115318056 A CN 115318056A
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- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 79
- 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 79
- 239000010457 zeolite Substances 0.000 title claims abstract description 79
- 238000007084 catalytic combustion reaction Methods 0.000 title claims abstract description 54
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 40
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 22
- 239000002912 waste gas Substances 0.000 claims abstract description 31
- 239000003054 catalyst Substances 0.000 claims abstract description 19
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002808 molecular sieve Substances 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 239000000428 dust Substances 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 41
- 239000000919 ceramic Substances 0.000 claims description 21
- 238000003795 desorption Methods 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000002203 pretreatment Methods 0.000 claims description 8
- 238000005338 heat storage Methods 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 6
- 230000002209 hydrophobic effect Effects 0.000 abstract description 3
- 239000010815 organic waste Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000003463 adsorbent Substances 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 7
- 238000011069 regeneration method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009290 primary effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B01D53/02—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
- B01D53/0407—Constructional details of adsorbing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- 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
- B01D53/0454—Controlling adsorption
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- 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
- 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
- B01D2259/403—Further details for adsorption processes and devices using three beds
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a VOCs zeolite adsorption concentration catalytic combustion treatment system, which belongs to the technical field of waste gas treatment and comprises a pretreatment chamber, an adsorption concentration chamber, an RCO catalytic combustion chamber and an exhaust pipe. The pretreatment chamber is provided with a filter material for capturing dust and sticky substances in the waste gas, the outlet of the pretreatment chamber is connected with the adsorption concentration chamber, the adsorption concentration chamber is provided with a hydrophobic zeolite molecular sieve for adsorbing and concentrating the large-air-volume low-concentration waste gas into small-air-volume high-concentration waste gas, and is matched with a nitrogen protection system, and the tail end of the adsorption concentration chamber is connected with the RCO catalytic combustion chamber. According to the invention, by controlling the structure of the adsorption concentration catalytic combustion device and the types of the adsorbent catalysts, the air quantity can be flexibly regulated and treated, the device is suitable for different types of organic waste gases, is matched with an efficient heat recovery system, fully recycles heat, reduces the operation cost, and has the advantages of higher automation degree and stronger safety when the waste gas treatment emission reaches the standard by adopting a full-automatic intelligent control system.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a VOCs zeolite adsorption concentration catalytic combustion treatment system.
Background
Volatile organic compounds VOCs are a general term for a class of organic compounds, which refer to organic compounds with saturated vapor pressure of more than 70Pa (at normal temperature) and boiling point of 50-260 ℃ (at normal pressure), and have various types, complex components and different properties, and mainly include ketones, hydrocarbons, aromatic hydrocarbons, aldehydes, alcohols, lipids, amines and the like.
The artificial emission of the VOCs mainly comes from industrial activities using organic solvents, fuel combustion and transportation engineering, the VOCs are important precursors for forming ozone and PM2.5, the natural environment and the human health are seriously harmed, the enhancement of the VOCs treatment is an effective way for controlling the pollution of the ozone and the PM2.5, and the method is also a powerful means for helping enterprises to save resources, improve benefits and reduce potential safety hazards.
The treatment methods of VOCs are mainly classified into two types: the widely used and mature technology is mainly classified into recovery and destruction technology. The traditional treatment method for VOCs waste gas with low concentration and large air volume has the problems of large occupied area of equipment, high operation cost, low removal efficiency and the like, for example, the efficiency of removing VOCs by a common activated carbon adsorption and CO combined process is still not very high, and the defects of difficult regeneration, poor hydrophobicity, easy combustion and the like of activated carbon cause unstable operation, frequent replacement of activated carbon is needed, the operation cost is increased, the universality of the process technology is enhanced, and the method is efficiently and safely applied to industries with large air volume and low concentration, such as coating, printing, petrochemical industry and the like, and becomes a research hotspot at present.
RCO (regenerative catalytic combustion) is a waste gas purification device, the waste gas purification efficiency can reach 96.5%, the thermal conversion efficiency can reach more than 97%, and the RCO can treat organic waste gas with large air volume and low concentration. When the organic components in the waste gas reach a certain concentration, the combustion heat is enough to maintain the normal operation of the whole equipment, no additional fuel is needed, the cost is saved to a great extent, and secondary pollution is basically avoided. The regenerative catalytic combustion furnace has the following advantages:
1. the operation is convenient: when the equipment works, automatic control is realized.
2. The energy consumption is low: the equipment is started, the temperature is raised to the ignition temperature within 15-30 minutes, the energy consumption is only the power of a fan, and the automatic compensation is performed when the concentration is low.
3. Safe and reliable: the equipment is provided with a fire-retardant dust-removing system, an explosion-proof pressure-relief system, an overtemperature alarm system and an advanced automatic control system.
4. Small resistance and high purification rate: the prior honeycomb ceramic carrier catalyst impregnated by noble metals of palladium and platinum has large specific surface area.
5. The waste heat can be recycled: the waste heat can return to the drying tunnel, so that the power consumption in the original drying tunnel is reduced; can also be used as a heat source in other aspects.
6. The occupied area is small: the product is only 70-80% of like products in the same industry, and the equipment foundation has no special requirements.
7. The service life is long: the catalyst was typically replaced over 16000 hours and the support was regenerable.
Therefore, the combined treatment mode of zeolite fixed bed concentration and regenerative catalytic combustion furnace is adopted, and VOCs can be treated with high efficiency and stability under the condition of low energy consumption.
Disclosure of Invention
The invention aims to solve the problems and provide a VOCs zeolite adsorption concentration catalytic combustion treatment system.
In order to realize the purpose, the invention adopts the technical scheme that:
the utility model provides a VOCs zeolite adsorption concentration catalytic combustion processing system, includes intake pipe, pre-treatment chamber, adsorption concentration chamber, RCO catalytic combustion chamber, blast pipe, and waste gas is through the pre-treatment chamber, the pre-treatment chamber is provided with the filter for detach dust and viscidity material in the waste gas, the pre-treatment chamber communicates with adsorption concentration chamber through transmission pipe No. one, be provided with the zeolite fixed bed in the adsorption concentration chamber, be provided with zeolite molecular sieve in the zeolite fixed bed, low concentration waste gas discharges through the blast pipe after the adsorption concentration chamber is handled, the blast pipe is connected with the zeolite fixed bed through No. two transmission pipes, RCO catalytic combustion unit sends into the zeolite fixed bed with hot-air through No. four transmission pipes and desorbs the organic matter, and the high concentration waste gas after desorption gets into RCO catalytic combustion chamber through No. three transmission pipes, RCO catalytic combustion chamber is provided with sweeping pipe and high temperature bypass pipe, and the high concentration waste gas after desorption discharges through the blast pipe after RCO catalytic combustion unit is handled.
The pretreatment chamber is connected with the RCO catalytic combustion chamber through an adsorption concentration chamber, and the front end of the pretreatment chamber is provided with an air inlet pipe.
The adsorption concentration chamber is internally provided with a zeolite fixed bed, the zeolite fixed bed is internally provided with a NaY type zeolite molecular sieve, and the NaY type zeolite molecular sieve adopts a double-layer filling mode.
The device is characterized in that a first transmission pipe and a second transmission pipe are respectively arranged at two ends of the zeolite fixed bed, the zeolite fixed bed is communicated with the pretreatment chamber through the first transmission pipe, the zeolite fixed bed is communicated with the exhaust pipe through the second transmission pipe, the number of the zeolite fixed beds is three, the zeolite fixed beds are mutually connected, and the zeolite fixed bed adopts a nitrogen protection system.
The zeolite fixed bed is connected with an RCO combustion device through a third transmission pipe, a honeycomb ceramic catalyst is arranged in the RCO catalytic combustion chamber, the honeycomb ceramic catalyst is filled in a drawer type mode, the RCO catalytic combustion chamber adopts a ceramic fiber heat preservation module, the RCO catalytic combustion chamber adopts heat storage ceramic for heat recovery, and meanwhile, the zeolite desorption is carried out by utilizing combustion heat, and the heat is fully recycled.
The RCO catalytic combustion device is characterized in that hot air is sent to the zeolite fixed bed through a fourth transmission pipe to desorb organic matters, desorbed high-concentration waste gas enters the RCO catalytic combustion chamber through a third transmission pipe, and the RCO catalytic combustion chamber is provided with a purging pipe and a high-temperature bypass pipe.
Further, a first fan, a second fan and a third fan are respectively arranged on the second transmission pipe, the third transmission pipe and the fourth transmission pipe.
Compared with the prior art, the invention has the following beneficial effects:
1) The pretreatment chamber adopts primary effect and intermediate effect filtration for catching dust and sticky substances in the waste gas and ensuring that the waste gas entering the zeolite adsorption concentration chamber is relatively clean. The pressure difference switch represents the pressure loss in real time, so that a user can conveniently and timely replace the filter material; high-efficient multistage filter is concentrated and is installed on the base, and the gag lever post of base both sides is used for high-efficient multistage filter to the rotatable regulation of gag lever post, when the user hoisted out the base through rings, but the gag lever post of both sides, the gag lever post of both sides was adjusted to the direction of keeping away from mutually, thereby makes the gag lever post of both sides expand, and gag lever post and base department same water flat line promptly can conveniently take off the filter this moment.
2) The adsorption capacity of the hydrophobic NaY type zeolite molecular sieve on VOCs is enhanced, the moisture resistance and anti-blocking capacity are good, the adaptability to the types of waste gas is strong, the dry-method efficient multistage filtering technology and the hydrophobic NaY type zeolite molecular sieve adsorption concentration and heat accumulation type catalytic combustion purification technologies are utilized for processing, compared with activated carbon adsorption concentration, the operation cost is low, the material is high-temperature resistant and non-combustible, the desorption regeneration effect is good, the service life is long, and the safety is good.
3) The zeolite molecular sieve is filled in two layers, one layer can be independently taken out for regeneration when being blocked, the regenerated zeolite can be continuously used, and the two layers are mutually independent and do not influence each other, thereby being convenient for loading, unloading and replacing.
4) The zeolite fixed bed adopts multi-bed combination, the air treatment amount is flexible and changeable, and the adsorption removal efficiency is higher;
5) The zeolite fixed bed adopts a nitrogen protection system, and nitrogen is injected intermittently when the temperature detection unit detects abnormality in desorption operation of the equipment to isolate air, so that the flame-retardant effect is achieved, and the safe operation of the equipment is ensured.
6) Compared with a common activated carbon adsorption bed, the zeolite adsorption fixed bed has the advantages of intermittent operation, low operation cost (regeneration can be carried out on the original equipment), high safety (the material is high temperature resistant and nonflammable), good desorption regeneration effect (high temperature desorption can be carried out), high removal rate, large treatment range and the like.
7) The RCO catalyst is TFJF/industrial waste gas VOC purification catalyst, and is a high-efficiency broad-spectrum catalyst for treating various different types of organic waste gases. The catalyst adopts a noble metal catalyst, honeycomb ceramics are used as a carrier, the catalyst comprises Pt, pd, au and the like, corresponding catalysts are selected according to different waste gas components, and the catalyst has the characteristics of high activity, high temperature resistance, long service life and the like.
8) The RCO honeycomb ceramic catalyst adopts a drawer type filling mode, an electric heating component is inserted in the middle of the RCO honeycomb ceramic catalyst, and the temperature of the RCO honeycomb ceramic catalyst reaches the reaction temperature by utilizing the infrared radiation principle, so that partial organic matters are decomposed to release energy.
9) The RCO main body adopts a ceramic fiber heat insulation module, so that the high temperature of the outer wall is avoided, and the heat efficiency can be improved; RCO adopts heat storage ceramic to recover heat, the exhaust waste heat of the catalytic furnace stores partial heat through the heat storage ceramic, and the heat absorbed by the heat storage ceramic is used for increasing the temperature of the next circulating inlet air and reducing the use of other energy sources; the heat energy exchange is directly carried out by using the heat storage ceramic and the gas, the radiation temperature and the pressure of the hearth are high, the heating speed is high, the heat utilization rate can reach more than 95 percent, zeolite desorption can be carried out by using combustion heat, the heat is fully recycled, and the operation cost is reduced.
10 RCO adopts a full-automatic intelligent control system to monitor the starting, stopping and faults of all power points, reflects the temperature rise and gas decomposition conditions of gas in the whole operation process, carries out all-around safe power protection on the whole process of equipment, and can be set according to the property of an exhaust gas source and the state of a production line; meanwhile, all faults occurring in the field equipment are analyzed and processed in time, fault information is reflected on the touch screen in real time, and corresponding alarm prompt is carried out.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure: 1. an air inlet pipe; 2. a pretreatment chamber; 3. a filter plate; 4. a first transmission pipe; 5. an adsorption concentration chamber; 6. a fixed bed of zeolite; 7. a NaY type zeolite molecular sieve; 8. a second transmission pipe; 9. a first fan; 10. an exhaust pipe; 11. a second fan; 12. a third transmission pipe; 13. an RCO catalytic combustor; 14. an RCO catalytic combustion device; 15. a purge tube; 16. a high temperature bypass pipe; 17. a third fan; 18. and a fourth conveying pipe.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in figure 1, a VOCs zeolite adsorption concentration catalytic combustion processing system comprises an air inlet pipe 1, a pretreatment chamber 2, an adsorption concentration chamber 5, an RCO catalytic combustion chamber 13 and an exhaust pipe 10, wherein waste gas passes through the pretreatment chamber 2, the pretreatment chamber is provided with a filter plate 3 for removing dust and sticky substances in the waste gas, the pretreatment chamber 2 is communicated with the adsorption concentration chamber 5 through a first transmission pipe 4, a zeolite fixed bed 6 is arranged in the adsorption concentration chamber 5, a zeolite molecular sieve 7 is arranged in the zeolite fixed bed 6, low-concentration waste gas is treated by the adsorption concentration chamber 5 and then is discharged through the exhaust pipe 10, the exhaust pipe 10 is connected with the zeolite fixed bed 6 through a second transmission pipe 8, the RCO catalytic combustion device 14 sends hot air into the zeolite fixed bed 6 through a fourth transmission pipe 18 to desorb organic matters, the desorbed high-concentration waste gas enters the RCO catalytic combustion chamber 13 through a third transmission pipe 12, the RCO catalytic combustion chamber 13 is provided with a purging pipe 15 and a high-temperature bypass pipe 16, and the desorbed high-concentration waste gas is treated by the RCO catalytic combustion device 14 and then is discharged through the exhaust pipe 10.
The pretreatment chamber 2 is connected with the RCO catalytic combustion chamber 13 through the adsorption concentration chamber 5, and the front end of the pretreatment chamber 2 is provided with an air inlet pipe 1.
A zeolite fixed bed 6 is arranged in the adsorption concentration chamber 5, a NaY type zeolite molecular sieve 7 is arranged in the zeolite fixed bed 6, and the NaY type zeolite molecular sieve 7 adopts a double-layer filling mode.
A first transmission pipe 4 and a second transmission pipe 8 are respectively arranged at two ends of a zeolite fixed bed 6, the zeolite fixed bed 6 is communicated with a pretreatment chamber 2 through the first transmission pipe 4, the zeolite fixed bed 6 is communicated with an exhaust pipe 10 through the second transmission pipe 8, the three zeolite fixed beds 6 are connected with each other, the zeolite fixed bed 6 adopts a nitrogen protection system, the zeolite fixed bed 6 is connected with an RCO combustion device 14 through a third transmission pipe 12, a honeycomb ceramic catalyst is arranged in the RCO catalytic combustion chamber 13 and adopts a drawer type filling mode, the RCO catalytic combustion chamber 13 adopts a ceramic fiber heat insulation module, the RCO catalytic combustion chamber 13 adopts heat storage ceramics to recover heat, and meanwhile, the combustion heat is utilized to desorb zeolite, and the heat is fully recovered and utilized.
The RCO catalytic combustion device 14 sends hot air into the zeolite fixed bed 6 through a fourth transmission pipe 18 to desorb organic matters, the desorbed high-concentration waste gas enters the RCO catalytic combustion chamber 13 through a third transmission pipe 12, the RCO catalytic combustion chamber is provided with a blowing pipe 15 and a high-temperature bypass pipe 16, and a first fan 9, a second fan 11 and a third fan 17 are respectively arranged on the second transmission pipe 8, the third transmission pipe 12 and the fourth transmission pipe 18.
The zeolite fixed bed adopts multi-bed combination, the treatment air quantity is flexible and changeable, the adsorption removal efficiency is higher, compared with a common activated carbon adsorption bed, the zeolite fixed bed has the advantages of intermittent operation, low operation cost (regeneration can be carried out on the original equipment), high safety (high temperature resistance and incombustibility of materials), good desorption regeneration effect (high temperature desorption), high removal rate, large treatment range and the like, and the RCO adopts a full-automatic intelligent control system to monitor the starting, stopping and faults of all power points, reflect the temperature rise and gas decomposition conditions of gas in the whole operation process, carry out all-around safe power protection on the whole process of the equipment, and can be set according to the property of an exhaust gas source and the state of a production line; meanwhile, all faults occurring in the field equipment are analyzed and processed in time, fault information is reflected on the touch screen in real time, and corresponding alarm prompt is carried out.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides a VOCs zeolite adsorbs concentrated catalytic combustion processing system, includes intake pipe (1), pre-treatment chamber (2), adsorbs concentrated room (5), RCO catalytic combustion chamber (13), blast pipe (10), and waste gas passes through pre-treatment chamber (2), the pre-treatment chamber is provided with filter (3) for dust and stickum in the desorption waste gas, pre-treatment chamber (2) are through a transmission pipe (4) and adsorb concentrated room (5) intercommunication, be provided with zeolite fixed bed (6) in the adsorption concentrated room (5), be provided with naY zeolite molecular sieve (7) in zeolite fixed bed (6), low concentration waste gas passes through blast pipe (10) and discharges after adsorbing concentrated room (5) and handling, blast pipe (10) are connected with zeolite fixed bed (6) through No. two transmission pipes (8), RCO catalytic combustion device (14) send into zeolite fixed bed (6) with hot-air through No. four transmission pipes (18) and desorb the organic matter, high concentration waste gas after desorption gets into RCO catalytic combustion chamber (13) through No. three transmission pipes (12) and get into RCO catalytic combustion chamber (15), high-concentration exhaust gas after the blowdown through RCO by-pass through bypass pipe (16) emission processing device (16).
2. The system of claim 1 for treating VOCs by zeolite adsorption, concentration and catalytic combustion, wherein: pretreatment chamber (2) are connected with RCO catalytic combustion room (13) through adsorbing concentration room (5), the front end of pretreatment chamber (2) is provided with intake pipe (1).
3. The system of claim 2, wherein the system comprises: a zeolite fixed bed (6) is arranged in the adsorption concentration chamber (5), a NaY type zeolite molecular sieve (7) is arranged in the zeolite fixed bed (6), and the NaY type zeolite molecular sieve (7) adopts a double-layer filling mode.
4. The system of claim 3 for treating VOCs by zeolite adsorption, concentration and catalytic combustion, wherein the system comprises: the two ends of the zeolite fixed bed (6) are respectively provided with a first conveying pipe (4) and a second conveying pipe (8), the zeolite fixed bed (6) is communicated with the pretreatment chamber (2) through the first conveying pipe (4), the zeolite fixed bed (6) is communicated with the exhaust pipe (10) through the second conveying pipe (8), the number of the zeolite fixed beds (6) is three, the zeolite fixed beds (6) are connected with each other, and the zeolite fixed beds (6) adopt a nitrogen protection system.
5. The system of claim 4 for treating VOCs by zeolite adsorption, concentration and catalytic combustion, wherein the system comprises: the zeolite fixed bed (6) is connected with an RCO combustion device (14) through a third transmission pipe (12), a honeycomb ceramic catalyst is arranged in the RCO catalytic combustion chamber (13), the honeycomb ceramic catalyst adopts a drawer type filling mode, the RCO catalytic combustion chamber (13) adopts a ceramic fiber heat insulation module, the RCO catalytic combustion chamber (13) adopts heat storage ceramic for heat recovery, and meanwhile, zeolite desorption is carried out by utilizing combustion heat, and the heat is fully recycled.
6. The system of claim 5, wherein the system comprises: the RCO catalytic combustion device (14) sends hot air into the zeolite fixed bed (6) through a fourth transmission pipe (18) to desorb organic matters, and the desorbed high-concentration waste gas enters the RCO catalytic combustion chamber (13) through a third transmission pipe (12), wherein the RCO catalytic combustion chamber is provided with a purging pipe (15) and a high-temperature bypass pipe (16).
7. The system of claim 6, wherein the system comprises: and a first fan (9), a second fan (11) and a third fan (17) are respectively arranged on the second transmission pipe (8), the third transmission pipe (12) and the fourth transmission pipe (18).
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| CN202210947353.7A CN115318056A (en) | 2022-08-09 | 2022-08-09 | VOCs zeolite adsorption concentration catalytic combustion treatment system |
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| CN117160187A (en) * | 2023-09-27 | 2023-12-05 | 昆山源和环保科技有限公司 | VOCs adsorption concentration catalytic combustion treatment process |
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