CN117085462A - Zeolite roller desorption mechanism and waste gas purifying integrated machine - Google Patents
Zeolite roller desorption mechanism and waste gas purifying integrated machine Download PDFInfo
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- CN117085462A CN117085462A CN202311132543.4A CN202311132543A CN117085462A CN 117085462 A CN117085462 A CN 117085462A CN 202311132543 A CN202311132543 A CN 202311132543A CN 117085462 A CN117085462 A CN 117085462A
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- 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 158
- 238000003795 desorption Methods 0.000 title claims abstract description 155
- 229910021536 Zeolite Inorganic materials 0.000 title claims abstract description 76
- 239000010457 zeolite Substances 0.000 title claims abstract description 76
- 239000002912 waste gas Substances 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 title claims abstract description 42
- 239000007789 gas Substances 0.000 claims abstract description 62
- 238000001816 cooling Methods 0.000 claims abstract description 32
- 238000000746 purification Methods 0.000 claims abstract description 21
- 238000001179 sorption measurement Methods 0.000 claims description 28
- 238000007254 oxidation reaction Methods 0.000 claims description 23
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 40
- 238000000034 method Methods 0.000 description 33
- 230000008569 process Effects 0.000 description 32
- 238000009434 installation Methods 0.000 description 20
- 229910052799 carbon Inorganic materials 0.000 description 14
- 238000007084 catalytic combustion reaction Methods 0.000 description 13
- 239000003973 paint Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 239000010815 organic waste Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000006864 oxidative decomposition reaction Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000010485 coping Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation 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
- B01D53/06—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
-
- 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
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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 relates to a zeolite roller desorption mechanism and an exhaust gas purification all-in-one machine, which comprises a zeolite roller module and a desorption module, wherein a plurality of mounting grooves are formed on the curved surface of the roller of the zeolite roller module around the roller axis, a zeolite unit is detachably arranged in each mounting groove, an exhaust gas discharge port is formed at a fixed position on the inner side of the zeolite roller module, and one side of the zeolite unit facing the roller axis is used for adsorbing organic matters in exhaust gas; the desorption module is clamped on the inner side and the outer side of the zeolite roller module, when cooling air passes through the zeolite unit from the inner side of the roller and enters the desorption module, the cooling air is guided to the heat exchanger by the desorption module to complete heat exchange and temperature rise, hot air formed by heat exchange is guided to pass through the zeolite unit by the desorption module and enters the inner side of the roller, and finally, the hot air is guided to a desorption waste gas pipeline by the desorption module. When facing the waste gas with large air quantity, the length of the roller can be lengthened to cope with the waste gas, so that the volume of the roller is not excessively large, and the movement, the use and the later maintenance are not influenced.
Description
Technical Field
The invention relates to the field of waste gas treatment equipment, in particular to a zeolite roller desorption mechanism and a waste gas purification integrated machine.
Background
Surface painting is the last ring among all the procedures of manufacturing processes of automobiles, engineering machinery, ships, aviation, railways and the like, and the surface treatment link determines the appearance quality of the product, and the appearance quality of the product depends on the painting effect.
The paint used in the current industrial field comprises two types of water paint and oil paint, wherein the water paint belongs to environment-friendly paint, if certain products have higher quality requirements on the appearance paint, the water paint cannot be used on the products, and the price of the water paint is higher than that of the traditional oil paint, so that the oil paint is still mainly used in the related industries at present.
Because a large amount of diluent is required to be added in the using process of the oil paint, a large amount of VOSs organic waste gas can be volatilized in the spraying process of the oil paint doped with the large amount of diluent, and the environment and staff can be greatly influenced.
At present, the treatment process of organic waste gas mainly uses an activated carbon and catalytic combustion process, as shown in fig. 1, the process is to pre-treat the waste gas firstly, so as to intercept particulate matters in the waste gas, the pre-treated flying matters can pass through an activated carbon adsorption device to finish the adsorption of the organic matters in the waste gas, the gas after reaching the adsorption standard is discharged through an adsorption fan, after a period of adsorption, the activated carbon is saturated with the adsorption of the organic matters, at the moment, the activated carbon is subjected to heating regeneration desorption treatment, hot air is adopted in the desorption process, the activated carbon adsorption bed is heated, the heating temperature is usually 80-120 ℃, the heated activated carbon is subjected to physical change, namely micropores on the activated carbon are expanded, the organic matters can be discharged along with the desorption air, the discharged high-concentration organic matters are sent into the catalytic combustion device through a desorption fan, the electric heating is heated, the high-concentration waste gas enters the catalytic bed when the desorption is heated to 300 ℃, a part of the gas after the reaction is discharged into the atmosphere, and a part of the gas is subjected to the desorption treatment through a mixing device and the regulation of the hot air, and the activated carbon is subjected to the desorption treatment.
Practical application proves that the process has lower organic matter treatment efficiency, easy spontaneous combustion in the running process, high safety hidden danger, high active carbon replacement frequency and relatively high use and maintenance cost.
Disclosure of Invention
Accordingly, it is desirable to provide a zeolite drum desorption mechanism and an exhaust gas purification integrated machine that are more flexible in use and that can be handled by lengthening the drum length in the face of large volume exhaust gas without causing excessive drum volume and affecting movement, use and post maintenance.
The invention provides a zeolite drum desorption mechanism, comprising:
the zeolite roller module is provided with a plurality of mounting grooves around the roller axis on the curved surface of the roller, each mounting groove is internally provided with a zeolite unit in a detachable way, a fixed position on the inner side of the zeolite roller module is provided with an exhaust gas discharge port, and one side of the zeolite unit facing the roller axis is used for adsorbing organic matters in exhaust gas;
the desorption module is clamped on the inner side and the outer side of the zeolite roller module, when cooling air passes through the zeolite unit from the inner side of the roller and enters the desorption module, the cooling air can be guided by the desorption module to the heat exchanger to complete heat exchange and temperature rise, hot air formed by heat exchange can be guided by the desorption module to pass through the zeolite unit and enter the inner side of the roller, and finally, the hot air is guided to a desorption waste gas pipeline by the desorption module.
In one embodiment, the roller comprises two side end plates and a plurality of first positioning blocks, the axes of the two side end plates coincide, the plurality of first positioning blocks are located between the two side end plates and distributed at intervals around the axes of the side end plates, one mounting groove is formed between every two adjacent first positioning blocks, and the mounting groove is in a rectangular structure.
In one embodiment, the ends of the zeolite units in the mounting groove are abutted against each other to form an air inlet channel for the exhaust gas to enter, and the exhaust gas must pass through the zeolite units by the edges of the air inlet channel.
In one embodiment, the first positioning block is hollow, the shell of the first positioning block is stressed and deformable, and can return when the force disappears, the two sides of the first positioning block are provided with second positioning grooves, and the two sides of the zeolite unit are provided with second positioning blocks matched with the second positioning grooves.
In one embodiment, the second positioning groove is located at the bottom of the mounting groove, and bottoms of two second positioning grooves located at the bottom of the mounting groove on the side face of the second positioning block are connected.
In one embodiment, the desorption module comprises a flow guiding member and a flow dividing member, the flow guiding member is located inside the roller, an opening of the flow guiding member is attached to the edge of the air inlet channel, the flow dividing member is located outside the roller, the flow dividing member is provided with a first air inlet, a second air inlet and an air outlet, the first air inlet is attached to the curved surface outside the roller, the air outlet is connected with the other end of the second air inlet, cold air passes through the edge of the air inlet channel and the zeolite unit sequentially to enter the first air inlet, then passes through the air outlet, the heat exchanger and the second air inlet sequentially, and then passes through the zeolite unit and the air inlet channel sequentially to enter the flow guiding member.
In one embodiment, the desorption module further comprises a connection pipe provided at one end of the drum, the connection pipe being rotatably connected with the guide member so that the guide member can rotate around the drum axis.
The invention also provides an exhaust gas purification all-in-one machine, which comprises a rectangular frame, a pretreatment module, an oxidation reaction module and the zeolite roller desorption mechanism in any one of the embodiments, wherein the rectangular frame is provided with at least two zeolite roller desorption mechanisms, the pretreatment module and the zeolite roller desorption mechanism are connected and installed in one rectangular frame, and the oxidation reaction module is installed in the other rectangular frame;
the zeolite roller desorption mechanism and the oxidation reaction module are arranged on the surface of the rectangular frame at the position which is required to be communicated, and are connected in a bonding way through two rectangular frames or are connected through a pipeline arranged on the surface of the rectangular frame;
the pretreatment module is used for filtering particulate matters in the waste gas, and the oxidation reaction module is used for desorbing the waste gas and carrying out high-temperature oxidation reaction.
In one embodiment, a purification exhaust pipeline is installed in the rectangular frame provided with the oxidation reaction module, the purification exhaust pipeline is arranged along the edge of the rectangular frame, one end of the purification exhaust pipeline is communicated with a purification air discharge port of the zeolite roller module, and the other end of the purification exhaust pipeline penetrates through the rectangular frame and is connected with an adsorption fan arranged outside the rectangular frame.
In one embodiment, the oxidation reaction module comprises a heat exchanger, combustion equipment, a wind mixing box and a desorption fan, wherein the heat exchanger is communicated with the air outlet through a cooling air pipeline, the heat exchanger is communicated with the second air inlet through a desorption air pipeline, the air inlet end of the desorption fan is communicated with the connecting pipe through a desorption waste gas pipeline, the air outlet end of the desorption fan is communicated with the inlet of the combustion equipment, the outlet of the combustion equipment is communicated with one end of the wind mixing box, and the other end of the wind mixing box penetrates out of the rectangular frame.
Above-mentioned zeolite cylinder desorption mechanism and exhaust gas purification all-in-one, waste gas gets into and passes cylinder surface mounting's zeolite unit from the cylinder inboard and enters into the purification exhaust duct, and discharge to the external world along the purification exhaust duct, in this process zeolite unit can adsorb the organic matter in the waste gas, afterwards the cooling air can get into and pass cylinder surface mounting's zeolite unit and enter into the desorption module and set up in the part outside the cylinder, and accomplish the heat transfer intensification along desorption module, wherein the cooling air is the waste gas that carries out the preliminary treatment (i.e. particulate matter filtration), after the cooling air intensification forms the desorption wind, the desorption wind can get into the part that desorption module is located the cylinder from the cylinder outside through cylinder surface mounting's zeolite unit, in this process, the inside micropore of zeolite unit that adsorbs the organic matter is increased under the influence of high temperature desorption wind, thereby make the organic matter can be taken away and be discharged along the part that desorption module is located the cylinder inboard when the desorption wind passes, this zeolite cylinder desorption mechanism can't in time or zeolite unit appears leading to carrying out the unusual desorption to can't carry out the zeolite unit to carry out the desorption to the organic matter in the normal use on the zeolite unit in the zeolite unit when the long-term use. According to the zeolite drum desorption mechanism, the zeolite units are modularized, so that the zeolite drum desorption mechanism can be replaced and maintained according to the use condition, the use and maintenance cost is low, and meanwhile, the zeolite units with different formulas can be replaced according to different working conditions. The desorption equipment with the traditional rotating wheel shape is set to be in the shape of the roller, so that the desorption equipment is more flexible in use, the maximum diameter of the roller can be controlled within 3 meters under the condition of ensuring transportation, and the desorption equipment can be used for coping with the condition of facing large-air-quantity waste gas by lengthening the length of the roller, so that the volume of the roller is not too large, and the movement, the use and the later maintenance are not influenced.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an organic waste gas treatment apparatus according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention for treating organic waste gas;
FIG. 3 is a schematic diagram of an exhaust gas purifying integrated machine according to the present invention;
FIG. 4 is a flow chart of the exhaust gas treatment of the exhaust gas purifying integrated machine according to the present invention;
FIG. 5 is a second schematic diagram of an exhaust gas purifying integrated machine according to the present invention;
FIG. 6 is a second flow chart of the exhaust gas treatment of the exhaust gas purifying integrated machine according to the present invention;
fig. 7 is a schematic structural diagram of a fixed puller according to the present invention;
FIG. 8 is a schematic view of a zeolite drum module according to the present invention;
FIG. 9 is a schematic diagram of the structure shown in FIG. 8A according to the present invention;
fig. 10 is a schematic structural diagram of a desorption module provided by the present invention;
fig. 11 is a flow chart of the waste gas treatment of the zeolite drum desorption mechanism provided by the invention.
Reference numerals:
100. a rectangular frame; 110. a first positioning groove; 200. fixing a puller; 300. a preprocessing module; 410. a zeolite drum module; 411. a side end plate; 412. a first positioning block; 4121. a second positioning groove; 413. zeolite units; 4131. a second positioning block; 414. an air intake passage; 420. a desorption module; 421. a flow guide; 422. a shunt; 4221. a first air inlet; 4222. an air outlet; 4223. a second air inlet; 423. a connecting pipe; 510. purifying an exhaust pipe; 520. a heat exchanger; 530. a desorption fan; 540. a combustion apparatus; 541. a flameless explosion venting device; 542. a switching valve; 550. a heat exchange exhaust duct; 560. a wind mixing box; 600. an adsorption fan; 710. a cooling air duct; 720. a desorption wind pipe; 730. a regulating valve; 740. and desorbing the waste gas pipeline.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The existing treatment process for organic waste gas mainly comprises an active carbon and catalytic combustion process and a zeolite rotating wheel and catalytic combustion process, wherein the active carbon and catalytic combustion process is shown in fig. 1, the process is used for firstly pretreating waste gas, so that particulate matters in the waste gas are intercepted, the pretreated waste gas can pass through an active carbon adsorption device to complete adsorption of the organic matters in the waste gas, the gas reaching the standard after adsorption is discharged through an adsorption fan, after a period of adsorption, the active carbon is saturated with the adsorption of the organic matters, at the moment, the active carbon is subjected to heating regeneration desorption treatment, hot air is adopted in the desorption process, the active carbon adsorption bed is heated, the heating temperature is generally 80-120 ℃, the heated active carbon is subjected to physical change, namely micropores on the active carbon are expanded, the organic matters with the desorption air are discharged, the discharged high-concentration organic matters are sent into the catalytic combustion device through the electric heating fan, the high-concentration waste gas is heated to 300 ℃, the catalytic bed enters the active carbon after the adsorption, part of the gas is discharged to the atmosphere, and the active carbon is subjected to the desorption through the air mixing valve after the part of the active carbon is subjected to the air mixing valve, and the active carbon is subjected to the desorption treatment.
It should be noted that the activated carbon used in the process is formed by carbon and adhesive, the ignition point is low, the activated carbon is exposed outdoors for a long time, and the spontaneous combustion phenomenon can be generated under the condition of not heating and desorbing. And the desorption temperature of the material is allowed to be 120 ℃ at most, the activated carbon is easy to ignite beyond the desorption temperature, the activated carbon has residues after each desorption, mainly high boiling point substances higher than 120 ℃ cannot be effectively desorbed, the adsorption capacity of the activated carbon is affected, and the adsorption efficiency is reduced.
The zeolite rotating wheel and catalytic combustion process shown in fig. 2 is characterized in that waste gas is pretreated firstly, so that particulate matters in the waste gas are intercepted, organic matters in the waste gas passing through the zeolite rotating wheel adsorption equipment are adsorbed, the gas reaching the standard is discharged through an adsorption fan, the zeolite rotating wheel is divided into three areas, an adsorption area, a desorption area and a cooling area, the rotating wheel rotates at a lower speed all the time during operation, desorption is carried out while the adsorption is carried out by hot air, the desorption temperature is between 180 and 200 ℃, the heated zeolite is subjected to physical change, namely zeolite micropores are expanded, so that the organic matters adsorbed in zeolite pore channels at normal temperature are discharged along with the desorption wind, the discharged high-concentration organic matters pass through the desorption fan, pass through a secondary heat exchanger and are sent into catalytic combustion equipment, the temperature is increased through electric heating, the high-concentration waste gas after the desorption is heated to 300 ℃ to a light-off temperature, then enters a catalytic bed, and the gas after the reaction passes through a primary heat exchanger and a secondary heat exchanger, and is discharged into the atmosphere. The zeolite rotating wheel desorption hot air is used for extracting pretreated air to cool a cooling area of the rotating wheel, and the cooled hot air is sent to a desorption area of the zeolite rotating wheel after being regulated by a proportional valve on the cold side of the secondary heat exchanger to desorb the rotating wheel.
It should be noted that, the zeolite runner process has a strong dependence on pretreatment, and the filtering material of the pretreatment equipment is damaged in the use process, so that the particulates block the site of the runner, or the surface of the runner is accumulated due to improper maintenance in the operation process, so that the adsorption efficiency and the service life of the zeolite runner are affected, the occurrence of the blocking of the runner may be local or integral, but the zeolite runner cannot be locally maintained or replaced under the condition of local blocking or breakage, and the runner needs to be integrally replaced no matter whether the local or integral damage occurs, so that the cost of replacement is relatively high due to the fact that the amount of money of the runner in the process is relatively large. Because the structure of the rotating wheel is circular, in the use of the rotating wheel for processing the air quantity, the diameter requirement of the rotating wheel is large, the transportation of the rotating wheel is required to be disassembled and then assembled on site, which is time-consuming, and the requirement on the installation precision is high, and is limited by the manufacturing process of the rotating wheel, the maximum diameter of the current wheel cake is 4.5 meters, the occupied area is too large when the large air quantity is processed on site in a combined mode, or the single processed air quantity is limited by the maximum diameter, so the rotating wheel is not flexible.
In addition, as some zeolite runner catalytic combustion equipment is developed in the industry in recent years, pretreatment, runners, heat exchangers, catalytic combustion, valves, pipelines and the like are integrated into one piece of equipment, but only the problems of integration and standardization are solved, the installation efficiency is improved, the installation period and the safety problem of materials are shortened, the maintenance defect of runner materials and the use defect of catalytic combustion are improved, the air quantity of the integrated machine is limited due to the constraint of the diameter of the runners, the integrated machine is not used in a combined mode, standard emission cannot be met when high-concentration waste gas is treated, the whole equipment is sealed by a shell, and the integrated equipment is very inconvenient to maintain in the use process.
Meanwhile, on-site pipelines, valves, equipment, heat exchangers, heat preservation and the like required by the two processes are not uniform in size and more in specification, and on-site installation is complicated. And the catalytic combustion used in the two processes mainly depends on the catalyst, the catalytic bed can be constrained by the temperature condition of the catalyst when treating high-concentration waste gas, the highest temperature of the catalytic bed cannot exceed 600 ℃, and the catalyst can be damaged when the highest temperature is higher than the highest temperature, so that equipment can often be prevented from operating normally or the service life of the catalyst can be influenced when treating high-energy waste gas, and the purification efficiency of waste gas is greatly reduced.
The zeolite drum desorption mechanism and the exhaust gas purification integrated machine of the present invention are described below with reference to fig. 3 to 11.
As shown in fig. 8 and 11, in one embodiment, a zeolite drum desorption mechanism includes a zeolite drum module 410 and a desorption module 420, wherein a plurality of mounting grooves are formed on a drum curved surface of the zeolite drum module 410 around a drum axis, a zeolite unit 413 is detachably mounted in each mounting groove, an exhaust gas discharge port is formed at a fixed position on the inner side of the zeolite drum module 410, and one side of the zeolite unit 413 facing the drum axis is used for adsorbing organic matters in exhaust gas; the desorption module 420 is clamped at the inner side and the outer side of the zeolite drum module 410, when cooling air passes through the zeolite unit 413 from the inner side of the drum and enters the desorption module 420, the cooling air is guided by the desorption module 420 to the heat exchanger 520 to complete heat exchange and temperature rise, hot air formed by heat exchange is guided by the desorption module 420 to pass through the zeolite unit 413 and enter the inner side of the drum, and finally, the hot air is guided by the desorption module 420 to the desorption waste gas pipeline 740.
In the zeolite drum desorption mechanism, exhaust gas enters the purifying exhaust pipe 510 from the inner side of the drum and passes through the zeolite unit 413 installed on the surface of the drum, and is discharged to the outside along the purifying exhaust pipe 510, in the process, the zeolite unit 413 adsorbs organic matters in the exhaust gas, then cooling air enters the part of the desorption module 420 arranged at the outer side of the drum from the inner side of the drum and passes through the zeolite unit 413 installed on the surface of the drum, and enters the heat exchanger 520 along the desorption module 420 to complete heat exchange and temperature rise, wherein the cooling air is the exhaust gas after pretreatment (i.e. particulate matter filtration), after the cooling air is heated to form desorption air, the desorption air enters the part of the desorption module 420 located at the inner side of the drum from the outer side of the drum through the zeolite unit 413 installed on the surface of the drum, and in the process, the zeolite unit 413 adsorbed with organic matters is increased in micropores under the influence of the high-temperature desorption air, so that the organic matters can be taken away when the desorption air passes through and are discharged along the part of the zeolite unit 420 located at the inner side, and if the organic matters 413 adsorbed on the zeolite unit 413 or the zeolite unit 413 cannot be removed normally in use for a long time, and the zeolite unit cannot be removed normally. The zeolite drum desorption mechanism is modularized, so that the zeolite units 413 can be replaced and maintained according to the use condition, the use and maintenance cost is low, and meanwhile, the zeolite units 413 with different formulas can be replaced according to different working conditions. The desorption equipment with the traditional rotating wheel shape is set to be in the shape of the roller, so that the desorption equipment is more flexible in use, the maximum diameter of the roller can be controlled within 3 meters under the condition of ensuring transportation, and the desorption equipment can be used for coping with the condition of facing large-air-quantity waste gas by lengthening the length of the roller, so that the volume of the roller is not too large, and the movement, the use and the later maintenance are not influenced.
It should be noted that, since the drum rotates at a low speed when in use, the desorption module 420 is always kept different during use, and the exhaust ports of the exhaust gas and the cooling air inside the drum are also kept different, and in order to ensure the normal operation of the zeolite drum desorption mechanism, the exhaust gas discharge port, the desorption position of the desorption module 420 and the cooling air discharge port are sequentially arranged along the rotation direction of the drum.
In one embodiment, the zeolite drum desorption mechanism provided by the invention comprises two side end plates 411 and a plurality of first positioning blocks 412, wherein the axes of the two side end plates 411 are coincident, the plurality of first positioning blocks 412 are positioned between the two side end plates 411 and are distributed at intervals around the axes of the side end plates 411, a mounting groove is formed between two adjacent first positioning blocks 412, and the mounting groove is arranged in a rectangular structure.
Specifically, the installation groove that rectangular structure set up is used for installing zeolite unit 413, and the structure of zeolite unit 413 is outer fixed frame in this embodiment, and fixed frame both ends link up, and the fixed frame is inside to integrate with cellular zeolite. The installation grooves provided in the rectangular structure are used for installing the zeolite units 413 in the rectangular structure, and the zeolite units 413 provided in the rectangular structure maintain the air pressure in the exhaust gas flowing process stable, and simultaneously optimize the ventilation quantity of the zeolite units 413.
In one embodiment, the zeolite drum desorption mechanism provided by the invention is characterized in that the ends of a plurality of zeolite units 413 in the installation groove are mutually abutted to form an air inlet channel 414 for the exhaust gas to enter, and the exhaust gas can pass through the zeolite units 413 only by passing through the edge of the air inlet channel 414.
Specifically, since the zeolite units 413 are all rectangular in structure with the same structure as the mounting grooves, and the setting directions of all the mounting grooves are all toward the roller axis, when the zeolite units 413 are mounted in the mounting grooves of the mounting box, the corners of two adjacent zeolite units 413 can be abutted to one place, and the structure can limit the zeolite units 413 on one hand, and can avoid the waste gas from contacting the inner side of the roller to cause the dirt on the inner side of the roller on the other hand.
As shown in fig. 9, in one embodiment, in the zeolite drum desorption mechanism provided by the invention, the first positioning block 412 is hollow, the shell of the first positioning block 412 is stressed and deformable, and can return when the force disappears, the two sides of the first positioning block 412 are provided with the second positioning grooves 4121, and the two sides of the zeolite unit 413 are provided with the second positioning blocks 4131 matched with the second positioning grooves 4121.
Specifically, the first positioning block 412 is formed by connecting three or four plates, and since the zeolite unit 413 is matched with the installation groove and the two are relatively attached, when the zeolite unit 413 is installed in the installation groove, the second positioning block 4131 on the side surface of the zeolite unit 413 presses the outer shell of the first positioning block 412 to deform, and is blocked into the second positioning groove 4121 when moving to the second positioning groove 4121, at this time, the outer shell of the first positioning block 412 is not pressed by the second positioning block 4131, and because the roller rotates at a low speed, the shallower blocking structure can also fix the zeolite unit 413. In addition, the zeolite unit 413 may be fixed in the installation groove by means of press-fastening, wherein the press-fastening is located on two opposite sides of the installation groove.
In one embodiment, in the zeolite drum desorption mechanism provided by the invention, the second positioning groove 4121 is positioned at the bottom of the installation groove, and the bottoms of the two second positioning grooves 4121 positioned at the bottom of the installation groove on the side surface of the second positioning block 4131 are connected.
Specifically, because the mounting groove is rectangular structure setting, and a plurality of mounting grooves all face the axis of cylinder, therefore the tangent plane of the first locating piece 412 that is located between two adjacent mounting grooves is triangle-shaped, the narrow structure of one end width one end such as trapezoidal, and the bottom of mounting groove both is the narrow one end of first locating piece 412, consequently set up second locating groove 4121 in the narrow one end of first locating piece 412, when second locating piece 4131 card income second locating groove 4121 and continue to remove to the mounting groove bottom, because the not enough of space, so two second locating grooves 4121 of two both sides of the narrow end of same locating piece can each other butt for two second locating grooves 4121 all can not produce deformation, consequently guaranteed zeolite unit 413 installation's stability, the problem of installation is not in place or installation too dark can not appear.
As shown in fig. 10, in an embodiment of the zeolite drum desorption mechanism provided by the present invention, the desorption module 420 includes a flow guiding member 421 and a flow dividing member 422, the flow guiding member 421 is located inside the drum, an opening of the flow guiding member 421 is attached to an edge of the air inlet channel 414, the flow dividing member 422 is located outside the drum, the flow dividing member 422 has a first air inlet 4221, a second air inlet 4223 and an air outlet 4222, the first air inlet 4221 is attached to a curved surface outside the drum, the other ends of the air outlet 4222 and the second air inlet 4223 are connected with a heat exchanger 520, and cold air enters the first air inlet 4221 through the edge of the air inlet channel 414 and the zeolite unit 413 in sequence, then passes through the air outlet 4222, the heat exchanger 520 and the second air inlet 4223 in sequence, and then passes through the zeolite unit 413 and the air inlet channel 414 in sequence and enters the flow guiding member 421 through the first air inlet 4221.
Specifically, the inside of the flow dividing member 422 is divided into two parts, and the two parts share one first air inlet 4221, when the cooling air passes through the edge of the air inlet channel 414 and the zeolite unit 413, the cooling air flows out of the air outlet 4222 through the first air inlet 4221, and when the cooling air forms high-temperature desorption air after heat exchange and temperature rise, the cooling air enters from the second air inlet 4223 and flows out of the first air inlet 4221, and then passes through the zeolite unit 413 to enter the flow guiding member 421.
In one embodiment, the zeolite drum desorption mechanism provided by the present invention, the desorption module 420 further comprises a connection pipe 423, wherein the connection pipe 423 is disposed at one end of the drum, and the connection pipe 423 is rotatably connected with the flow guiding member 421, so that the flow guiding member 421 can rotate around the axis of the drum.
Specifically, in actual use, whether maintenance is required to be performed inside the drum or the desorption area is required to be moved, the position of the desorption module 420 may need to be adjusted, and by rotationally connecting the flow guiding member 421 with the connecting pipe 423, the flow guiding member 421 can move along the inner side of the drum, so as to perform the position movement, and the flow dividing member 422 located on the outer side of the drum can also move along the outer side of the drum, so as to keep the opposite to the flow guiding member 421.
As shown in fig. 3 and 5, in one embodiment, an exhaust gas purifying integrated machine includes a rectangular frame 100, a pretreatment module 300, an oxidation reaction module, and a zeolite drum desorption mechanism of any one of the above embodiments, the rectangular frame 100 is provided with at least two, the pretreatment module 300 and the zeolite drum desorption mechanism are connected and installed in one rectangular frame 100, and the oxidation reaction module is installed in another rectangular frame 100; the zeolite roller desorption mechanism and the oxidation reaction module are arranged on the surface of the rectangular frame 100 at the position which is required to be communicated, and are connected through the two rectangular frames 100 in a bonding way or are connected through a pipeline arranged on the surface of the rectangular frame 100; the pretreatment module 300 is used for filtering particulate matters in the exhaust gas, and the oxidation reaction module is used for desorbing the exhaust gas to perform high-temperature oxidation reaction.
In the above-mentioned waste gas purification all-in-one machine, waste gas enters from the inner side of the drum and passes through the zeolite unit 413 installed on the surface of the drum into the purification exhaust pipe 510, and is discharged to the outside along the purification exhaust pipe 510, in this process, the zeolite unit 413 adsorbs organic matters in the waste gas, then cooling air enters from the inner side of the drum and passes through the zeolite unit 413 installed on the surface of the drum into a part of the desorption module 420 arranged on the outer side of the drum, and enters into the heat exchanger 520 along the desorption module 420 to complete heat exchange and temperature rise, wherein the cooling air is waste gas after pretreatment (i.e. particulate matter filtration), after the cooling air is heated to form desorption air, the desorption air enters from the outer side of the drum into the part of the desorption module 420 located on the inner side of the drum through the zeolite unit 413 installed on the surface of the drum, in this process, the zeolite unit 413 adsorbed with organic matters is increased in micropores under the influence of the high-temperature desorption air, so that the organic matters can be taken away when the desorption air passes through and discharged along the part of the zeolite unit 420 located on the inner side of the drum, and if the organic matters 413 adsorbed on the zeolite unit 413 or the zeolite unit cannot be removed normally in time, and the zeolite unit cannot be removed normally. The zeolite drum desorption mechanism is modularized, so that the zeolite units 413 can be replaced and maintained according to the use condition, the use and maintenance cost is low, and meanwhile, the zeolite units 413 with different formulas can be replaced according to different working conditions. The desorption equipment with the traditional rotating wheel shape is set to be in the shape of the roller, so that the desorption equipment is more flexible in use, the maximum diameter of the roller can be controlled within 3 meters under the condition of ensuring transportation, and the desorption equipment can be used for coping with the condition of facing large-air-quantity waste gas by lengthening the length of the roller, so that the volume of the roller is not too large, and the movement, the use and the later maintenance are not influenced. Since the pretreatment module 300, the oxidation reaction module, and the zeolite drum desorption mechanism are communicated with each other and the three are installed in the two rectangular frames 100, it is necessary to specially set the communication positions between the pretreatment module 300, the oxidation reaction module, and the zeolite drum desorption mechanism in order to realize the modularization of the apparatus. If the communication portions need to sequentially penetrate through the opposite ends of the two rectangular frames 100, the communication portions are respectively disposed at the opposite positions of the opposite ends of the two rectangular frames 100, and the two communication portions can be connected when the two rectangular frames 100 are spliced. If the communication parts are located at the sides of the two rectangular frames 100, respectively, the communication parts are connected using external pipes. This structure sets up and makes this exhaust purification all-in-one form the standardization, has reduced non-standard product's design cost, cost of manufacture and installation cost, has shortened installation cycle greatly, and the later maintenance is more convenient.
As shown in fig. 7, in one embodiment of the exhaust gas purifying integrated machine provided by the present invention, first positioning grooves 110 are formed at corners of side surfaces of rectangular frames 100, and two adjacent rectangular frames 100 are fixedly connected by fixing puller 200 installed in two first positioning grooves 110.
In one embodiment, the exhaust gas purifying integrated machine provided by the invention is provided with the purifying exhaust pipe 510 installed in the rectangular frame 100 provided with the oxidation reaction module, the purifying exhaust pipe 510 is arranged along the edge of the rectangular frame 100, one end of the purifying exhaust pipe 510 is communicated with the purifying air discharge port of the zeolite drum module 410, and the other end of the purifying exhaust pipe 510 penetrates through the rectangular frame 100 and is connected with the adsorption fan 600 arranged outside the rectangular frame 100.
Specifically, the purge exhaust duct 510 needs to extend from one end to the other end of the rectangular frame 100 for unification of exhaust emission positions, and thus, for installation of other devices within the rectangular frame 100, the purge exhaust duct 510 needs to be disposed along the edges of the rectangular frame 100, thereby providing space for installation of other devices. In this embodiment, the treatment process of the exhaust gas is shown in fig. 4.
In one embodiment, the oxidation reaction module of the exhaust gas purification integrated machine provided by the invention comprises a heat exchanger 520, combustion equipment 540, a wind mixing box 560 and a desorption fan 530, wherein the heat exchanger 520 is communicated with an air outlet 4222 through a cooling air pipeline 710, the heat exchanger 520 is communicated with a second air inlet 4223 through a desorption air pipeline 720, an air inlet end of the desorption fan 530 is communicated with a connecting pipe 423 through a desorption exhaust gas pipeline 740, an air outlet end of the desorption fan 530 is communicated with an inlet of the combustion equipment 540, an outlet of the combustion equipment 540 is communicated with one end of the wind mixing box 560, the other end of the wind mixing box 560 penetrates out of the rectangular frame 100, and the heat exchanger 520 is communicated with the wind mixing box 560 through a heat exchange exhaust pipeline 550.
Specifically, due to the size of the device and the sequential usage condition of the device, the combustion apparatus 540 is disposed at one end of one rectangular frame 100 far away from the other rectangular frame 100, and the heat exchanger 520 and the desorption fan 530 are disposed between the two in sequence from top to bottom. Wherein, the cooling air duct 710 and the desorption air duct 720 are connected to one end of the heat exchanger 520 through one duct, and the duct is installed with the adjusting valve 730. The flameless explosion venting device 541 and the switching valve 542 are respectively installed on the combustion apparatus 540. In this embodiment, the treatment process of the exhaust gas is shown in fig. 6. The adsorption blower 600 is used for providing adsorption wind, that is, the exhaust gas is adsorbed to the zeolite drum desorption module 420 to obtain clean air, the desorption blower 530 is used for providing driving force for cooling wind and desorption wind, that is, the pretreated gas is adsorbed to the cooling area of the drum, the gas subjected to heat exchange is adsorbed to the drum desorption area, so that organic matters in the desorption area are separated, and the organic matters are conveyed to the combustion equipment 540 (RTO) by wind power, the combustion equipment 540 comprises a combustion chamber and a regenerator, when the high-concentration inorganic matters enter the combustion equipment 540, the combustion chamber is heated and heated to 800 ℃ to realize oxidative decomposition, one part of the gas subjected to the oxidative decomposition reaction is released to the heat exchanger 520, and the other part of the gas subjected to the oxidative decomposition reaction is discharged to the atmosphere after being cooled by the regenerator. Because the oxidative decomposition module adopts the high temperature of 800 ℃ to oxidize the concentrated organic matters, the condition that the equipment cannot operate due to the fact that the catalyst is damaged like the catalytic combustion equipment 540 does not occur.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. A zeolite drum desorption mechanism comprising:
the zeolite roller module is provided with a plurality of mounting grooves around the roller axis on the curved surface of the roller, each mounting groove is internally provided with a zeolite unit in a detachable way, a fixed position on the inner side of the zeolite roller module is provided with an exhaust gas discharge port, and one side of the zeolite unit facing the roller axis is used for adsorbing organic matters in exhaust gas;
the desorption module is clamped on the inner side and the outer side of the zeolite roller module, when cooling air passes through the zeolite unit from the inner side of the roller and enters the desorption module, the cooling air can be guided by the desorption module to the heat exchanger to complete heat exchange and temperature rise, hot air formed by heat exchange can be guided by the desorption module to pass through the zeolite unit and enter the inner side of the roller, and finally, the hot air is guided to a desorption waste gas pipeline by the desorption module.
2. The zeolite drum desorbing mechanism as set forth in claim 1, wherein said drum includes two side end plates and a plurality of first positioning blocks, said two side end plates being axially coincident, said plurality of first positioning blocks being located between said two side end plates and being spaced about said side end plate axis, one of said mounting slots being formed between two adjacent first positioning blocks, said mounting slots being disposed in a rectangular configuration.
3. A zeolite cylinder desorbing mechanism as set forth in claim 2 wherein ends of said plurality of zeolite units in said mounting groove abut each other to form an inlet passage for the exhaust gas to enter and the exhaust gas must pass through the edges of said inlet passage to pass through said zeolite units.
4. A zeolite drum desorption mechanism according to claim 3, wherein the first positioning block is hollow, the housing of the first positioning block is deformable under force and can return when the force is lost, second positioning grooves are formed in two sides of the first positioning block, and second positioning blocks matched with the second positioning grooves are formed in two sides of the zeolite unit.
5. The zeolite cylinder desorbing mechanism as set forth in claim 4 wherein said second locating slot is located at a bottom position of said mounting slot and two second locating slot bottoms located at said bottom position of said mounting slot are joined at a side of said second locating block.
6. The zeolite drum desorbing mechanism as set forth in claim 5, wherein said desorbing module comprises a deflector and a splitter, said deflector being positioned inside said drum, an opening of said deflector being in contact with an edge of said air inlet channel, said splitter being positioned outside said drum, said splitter having a first air inlet, a second air inlet and an air outlet, said first air inlet being in contact with a curved surface outside said drum, said air outlet and the other end of said second air inlet being connected to said heat exchanger, cool air passing through said air inlet channel edge and said zeolite unit in sequence into said first air inlet, then passing through said air outlet, said heat exchanger and said second air inlet in sequence, and then passing through said zeolite unit and said air inlet channel in sequence into said deflector.
7. The zeolite drum desorbing mechanism as set forth in claim 6, further comprising a connecting tube disposed at one end of said drum, said connecting tube being rotatably connected to said deflector so that said deflector can rotate about said drum axis.
8. An exhaust gas purification integrated machine, characterized by comprising a rectangular frame, a pretreatment module, an oxidation reaction module and the zeolite cylinder desorption mechanism of any one of claims 1 to 7, wherein the rectangular frame is provided with at least two, the pretreatment module and the zeolite cylinder desorption mechanism are connected and installed in one rectangular frame, and the oxidation reaction module is installed in the other rectangular frame;
the zeolite roller desorption mechanism and the oxidation reaction module are arranged on the surface of the rectangular frame at the position which is required to be communicated, and are connected in a bonding way through two rectangular frames or are connected through a pipeline arranged on the surface of the rectangular frame;
the pretreatment module is used for filtering particulate matters in the waste gas, and the oxidation reaction module is used for desorbing the waste gas and carrying out high-temperature oxidation reaction.
9. The exhaust gas purifying integrated machine according to claim 8, wherein a purifying exhaust duct is installed in the rectangular frame provided with the oxidation reaction module, the purifying exhaust duct is provided along an edge of the rectangular frame, one end of the purifying exhaust duct is communicated with a purifying air discharge port of the zeolite drum module, and the other end of the purifying exhaust duct penetrates through the rectangular frame and is connected with an adsorption fan provided outside the rectangular frame.
10. The exhaust gas purification integrated machine according to claim 9, wherein the oxidation reaction module comprises a heat exchanger, combustion equipment, a wind mixing box and a desorption fan, the heat exchanger is communicated with the air outlet through a cooling air pipeline, the heat exchanger is communicated with the second air inlet through a desorption air pipeline, an air inlet end of the desorption fan is communicated with the connecting pipe through a desorption exhaust gas pipeline, an air outlet end of the desorption fan is communicated with an inlet of the combustion equipment, an outlet of the combustion equipment is communicated with one end of the wind mixing box, and the other end of the wind mixing box penetrates out of the rectangular frame.
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| CN202311132543.4A CN117085462A (en) | 2023-09-04 | 2023-09-04 | Zeolite roller desorption mechanism and waste gas purifying integrated machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311132543.4A CN117085462A (en) | 2023-09-04 | 2023-09-04 | Zeolite roller desorption mechanism and waste gas purifying integrated machine |
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| CN211913252U (en) * | 2020-03-04 | 2020-11-13 | 上海睿筑环境科技有限公司 | Zeolite piece bounding wall mechanism and zeolite runner |
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