CN112933900A - Volatile organic compound trapping and treating system - Google Patents
Volatile organic compound trapping and treating system Download PDFInfo
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- CN112933900A CN112933900A CN202110067104.4A CN202110067104A CN112933900A CN 112933900 A CN112933900 A CN 112933900A CN 202110067104 A CN202110067104 A CN 202110067104A CN 112933900 A CN112933900 A CN 112933900A
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 97
- 239000007788 liquid Substances 0.000 claims abstract description 162
- 239000002699 waste material Substances 0.000 claims abstract description 73
- 238000006243 chemical reaction Methods 0.000 claims abstract description 48
- 238000011282 treatment Methods 0.000 claims abstract description 48
- 239000007921 spray Substances 0.000 claims abstract description 36
- 238000003860 storage Methods 0.000 claims abstract description 27
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 11
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/05—Separating dispersed particles from gases, air or vapours by liquid as separating agent by condensation of the separating agent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- 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
- F23G7/008—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for liquid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/20—Supplementary heating arrangements using electric energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/20—Waste feed arrangements using airblast or pneumatic feeding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/10—Liquid waste
- F23G2209/101—Waste liquor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/508—Providing additional energy for combustion, e.g. by using supplementary heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a volatile organic compound trapping and treating system, which comprises a fan, an atomizing spray room, a gas-liquid conversion tank and a waste liquid storage tank which are connected in sequence, the waste liquid incinerator and the tail gas filter are characterized in that a temperature control device is arranged at the position near an air inlet and an air outlet of the fan respectively, the air outlet of the fan is connected with the atomizing spray chamber, the atomizing spray chamber is further connected with the gas-liquid conversion tank and the ozone generator, a liquid outlet on the gas-liquid conversion tank is connected with a liquid inlet of the waste liquid storage tank, the liquid outlet of the waste liquid storage tank sequentially passes through the first valve, the first booster pump is connected with the waste liquid incinerator, the gas-liquid conversion tank is further connected with one end of the filter through the second valve, the other end of the filter is connected with one end of the three-way valve through the second booster pump, and the other two ends of the three-way valve are connected with a. The system has the advantages of low waste gas treatment cost, high treatment efficiency, simple system structure and simple waste gas treatment method.
Description
Technical Field
The invention relates to the technical field of waste gas treatment systems, in particular to a volatile organic compound trapping and treating system.
Background
The general term of VOC is the Total Volatile Organic Compounds (TVOC) defined by the world health organization as volatile organic compounds with a melting point lower than room temperature and a boiling point between 50 ℃ and 260 ℃. In the process of high polymer materials and engineering, due to the combined action of heating and shearing, low molecular weight components (namely VOC) in the materials can volatilize into the air, thereby influencing the production environment.
The Chinese patent numbers are: 202010218333.7 discloses a VOCs waste gas treatment method and a VOCs waste gas treatment system, the VOCs waste gas treatment method is: and (3) adopting silicone oil as a poor absorbent in the absorption tower to absorb the VOCs in the VOCs waste gas, wherein the silicone oil which absorbs the VOCs becomes a rich absorbent and enters the desorption tower for desorption, so that the VOCs in the silicone oil are heated and evaporated out for recovery. The silicone oil after desorption enters a biological treatment unit to degrade residual VOCs in the silicone oil, and the silicone oil without the VOCs is used as a poor absorbent and enters an absorption tower again to absorb the VOCs; and the waste gas from which the VOCs are removed in the absorption tower also enters the biological treatment unit to degrade the VOCs in the waste gas, and the treated purified gas is discharged. The method can improve the regeneration level of the absorbent, reduce the content of VOCs in the lean absorbent, and is suitable for the recovery treatment of waste gas with medium and high concentration and recovery value, particularly hydrophobic VOCs. However, the VOCs waste gas treatment method and the VOCs waste gas treatment system are complex in structure, the VOCs waste gas treatment cost is high, and the treatment result is not ideal.
The Chinese patent numbers are: 201620800373.1 discloses an air processing tube for VOC gas processing system, which comprises a tube body and a plurality of ultraviolet devices installed in the tube body, wherein two ends of the ultraviolet devices penetrate through the tube body, the ultraviolet devices comprise ultraviolet lamp tubes and grid sleeves sleeved on the peripheries of the ultraviolet lamp tubes, and the peripheries of the grid sleeves are coated with nickel nets. The utility model discloses an air treatment simple structure, the air current of being convenient for passes through, and is effectual to VOC's decomposition. The utility model discloses a still provide and have the VOC gas processing system of air treatment pipe can be fully handled the organic composition in the VOC gas. But the system is only suitable for treating waste gas in a small space range and is not suitable for treating the problem of air pollution in a larger space range.
The Chinese patent numbers are: 201811435736.6 discloses a method and a system for the biological treatment of VOC. The cooperative VOC biological treatment method comprises the following specific operation steps: 1) carrying out primary treatment on the VOC waste gas, spraying circulating water in the primary treatment process, and injecting nutrient solution into the circulating water while spraying the circulating water; 2) and carrying out secondary treatment on the treated VOC waste gas, and carrying out intermittent water spraying in the secondary treatment process. The cooperative VOC biological treatment system comprises a cooperative biological treatment system, a circulating spray device and an intermittent irrigation device, wherein the cooperative biological treatment system comprises a biological trickling filter unit and a biological filter unit which are communicated with each other, the biological trickling filter unit is connected with the circulating spray device, and the biological filter unit is connected with the intermittent irrigation device; the circulating spraying device is also connected with a nutrient solution injection device. The present invention can save land, reduce investment and has no secondary pollution. However, the system has a complicated structure and the cost for treating the waste gas is high.
The Chinese patent numbers are: 201710063656.1 discloses a VOC waste gas treatment method and a VOC waste gas treatment process. The VOC waste gas treatment method comprises the step of physically cooling the VOC waste gas through a cold trap to remove high-concentration high-boiling-point components, so as to obtain a first gas. And (3) mixing the first gas with hydrogen peroxide vapor and water vapor to obtain a second gas, and contacting and reacting the second gas with electrons with high energy to obtain a third gas. And introducing a third gas into the detection tube for detection. And introducing the third gas which is unqualified in detection into a catalytic device with a catalyst for catalytic reaction, and introducing the gas subjected to catalytic reaction into the detection tube again for detection. The method has the advantages of large processing capacity, high efficiency, low material consumption and high automation degree. However, the VOC waste gas treatment method and the VOC waste gas treatment process are complex in treatment process, the VOC waste gas treatment cost is high, and the treatment result is not ideal.
In summary, the prior art generally has the problems of insufficient gas treatment, high energy consumption of waste gas collection in the treatment process, and the like, so that a technical scheme for further solving the problems in the prior art is needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a volatile organic compound trapping and treating system which has the advantages of lower waste gas treatment cost, higher treatment efficiency, simple system structure and simple waste gas treatment method. Mainly aims at purifying the air mixed with VOC in a closed factory building in the field of processing high polymer materials.
In order to achieve the above object, the invention provides a volatile organic compound trapping and processing system, the system comprises a fan, an atomization spray room, a gas-liquid conversion tank, a waste liquid storage tank, a waste liquid incinerator and a tail gas filter which are sequentially connected, wherein a temperature control device is arranged at a position near an air inlet and an air outlet of the fan respectively, the air outlet of the fan is connected with the atomization spray room, the atomization spray room is also connected with the gas-liquid conversion tank and an ozone generator, a liquid discharge port in the gas-liquid conversion tank is connected with a liquid inlet of the waste liquid storage tank, the liquid discharge port of the waste liquid storage tank is sequentially connected with the waste liquid incinerator through a first valve and a first booster pump, the gas-liquid conversion tank is also connected with one end of the filter through a second valve, the other end of the filter is connected with one end of a three-way valve through the second booster pump, and the other two ends of the three.
In order to prevent the condensation of the components with relatively low boiling points in the VOC waste gas at the position of the fan and to perform necessary cooling to reduce the temperature after the VOC waste gas passes through the fan, the preferred technical scheme is that an air inlet pipe is connected to an air inlet of the fan, an exhaust pipe is arranged between an air outlet of the fan and the atomizing spray chamber, a temperature rising or heat preservation regulating and controlling device is arranged on the air inlet pipe, and a temperature lowering regulating and controlling device is arranged on the air outlet pipe.
In order to prevent the relatively low boiling point components in the VOC exhaust gas from condensing at the position of the fan and control the temperature near the air inlet of the fan within a set temperature range, a further preferred technical scheme is that the temperature-raising or heat-preserving control device comprises a hot air inlet pipe connected to the air inlet, or an air heater connected to the air inlet, and/or a heat-preserving sleeve additionally arranged outside the air inlet pipe.
In order to ensure that the VOC waste gas needs to be cooled to reduce the temperature after passing through the fan, the further preferable technical scheme is that the cooling regulation and control device comprises a cold air inlet pipe connected to the air outlet pipe or an air cooler arranged on the air outlet pipe.
In order to facilitate the cooling water to be atomized into micron-sized atomized water mist, the VOC particles are effectively condensed into cooling water mist cores, so that the cooling water-coated VOC particles taking the VOC particles as the center are effectively formed.
In order to convert water-coated VOC particles coated with cooling water in a water mist state into steam, carbon dioxide and granular carbon deposition by heating and burning, the preferred technical scheme is that the waste liquid incinerator comprises an incinerator shell, a fan motor is arranged on the incinerator shell, fan blades of a fan are arranged in the incinerator shell, an incinerator inner container is arranged in the incinerator shell, an electromagnetic heating component is arranged on the outer wall of the incinerator shell, a waste liquid inlet pipe is arranged at the upper part of the incinerator shell, an air inlet and an air outlet are arranged on the side wall of the incinerator shell, and a tail gas filter is connected to the air outlet.
In order to convert the water-coated VOC particles coated with the cooling water in the water mist state into water vapor, carbon dioxide and granular carbon deposition by heating and burning, the further preferable technical scheme is that the electromagnetic heating component comprises an electromagnetic coil arranged outside the incinerator shell, the electromagnetic coil is connected with a high-frequency electromagnetic oscillator, and the high-frequency electromagnetic oscillator is connected with a controller.
In order to facilitate the control of the opening and closing time of the valve and the opening size of the valve, the preferable technical scheme is that the first valve, the second valve and the three-way valve comprise electromagnetic valves.
In order to facilitate the control of the waste water storage amount of the waste water storage tank and the state of the waste water entering the waste water incinerator, the preferable technical scheme is that a liquid level sensor is installed in the gas-liquid conversion tank and connected with a controller, and the controller is connected with an electromagnetic valve.
In order to control the inflow and outflow of the waste liquid and control the temperature of the waste liquid in the waste liquid storage tank, the bottom in the gas-liquid conversion tank is provided with a cooling coil pipe which is connected with a cooling machine, an adjustable flow pump is arranged outside the gas-liquid conversion storage tank, a waste liquid inlet of the adjustable flow pump is connected with a circulating liquid outlet at the bottom of the gas-liquid conversion tank through a circulating liquid outlet pipe, the circulating liquid outlet of the adjustable flow pump connects a liquid pipe with an atomizing spray head in an atomizing spray chamber through the waste liquid, a water outlet on the gas-liquid conversion tank is arranged at the bottom of the tank body and is connected with the waste liquid storage tank through a water outlet pipe, a third valve is arranged on the water outlet pipe, an exhaust pipe connected with an air outlet of a fan is further arranged on the gas.
The invention has the advantages and beneficial effects that: the volatile organic compound trapping and treating system has the advantages of low waste gas treatment cost and high treatment efficiency, and is a volatile organic compound trapping and treating system with simple system structure and waste gas treatment method. Can be mainly used for purifying the air containing VOC mixed in a closed factory building in the field of processing high polymer materials.
The system comprises a VOC gas catcher, a waste liquid incinerator and an incineration tail gas purifier. Mainly aims at purifying the air mixed with VOC in a closed factory building in the field of processing high polymer materials. The VOC gas trap has the function of converting VOC gas into a liquid state by utilizing comprehensive methods such as cooling, spraying, chemical reaction and the like. Specifically, form the gaseous relative concentrated position installation updraft ventilator of VOC in the factory building, certain temperature need be guaranteed to VOC gas when the fan, prevents that the gaseous relatively lower component of boiling point of VOC from condensing in the fan position. Therefore, a heating or heat-insulating device is required to be installed at the position from the air inlet to the fan. After the VOC gas passes through the blower, the necessary cooling is required to reduce the temperature. The VOC gas is cooled and then enters the atomization spraying chamber, and meanwhile, in order to improve the collection effect of the VOC, a certain amount of ozone is introduced into the atomization spraying chamber. The ozone reacts with the organic components in the VOC gas to form liquid-fire-solid reaction products.
And a plurality of groups of atomizing nozzles are arranged in the atomized spray water to atomize the cooling water into micron-sized atomized water mist. The VOC particles become effective condensation nuclei of the cooling water mist, thereby effectively forming cooling water-coated VOC particles centered around the VOC particles. Along with the increase of the water-coated VOC particles, the water-coated VOC particles are settled under the action of gravity, the settled liquid flows into the gas-liquid conversion tank, and in order to control the total amount of waste liquid in the gas-liquid conversion tank, two ways of methods are adopted for atomizing and supplying water, a liquid level sensor is arranged in the gas-liquid conversion tank, when the liquid level does not reach the position of the liquid level sensor, the source of the atomized water is pure water, when the liquid level reaches the position of the liquid level sensor, the source of the atomized water is switched to the storage liquid in the gas-liquid conversion tank for circulation, and the waste liquid needs to be filtered before being atomized, in order to prevent to block up atomizing nozzle, under general circumstances, the time control that the waste liquid circulation sprayed is within 48 hours, and the gas-liquid conversion jar waste liquid of recycling gets into the waste liquid storage tank afterwards, is squeezed into the waste liquid incinerator by first valve and first booster pump by the waste liquid storage tank and is burned in.
The waste liquid incinerator adopts electromagnetic radiation heating, and when electromagnetic radiation heating can guarantee to burn the steady operation of burning furnace, effectively reduced because adopt fuels such as fuel, natural gas directly to burn the probability that leads to the fact to burn burning furnace putty problem emergence. Moreover, the incinerator adopts the liner structure, so that the incinerator is more beneficial to cleaning the incinerated substances in the hearth. In addition, VOC waste liquid atomizing receives the atomization of fan leaf after getting into furnace, can greatly increase the specific surface area of waste liquid, fully mixes with hot air in the furnace, improves incineration efficiency. The VOC waste liquid after the atomizing is insufflated the incinerator inner bag by the fan simultaneously, can guarantee to burn the deposit and accumulate to burning in the incinerator inner bag, become with furnace clearance.
In order to ensure the purification degree of the burned gas products, the burned tail gas is purified by a burned tail gas evolutionary device. The incineration tail gas purifier has the function of purifying the incineration tail gas. The tail gas treatment can be carried out by adopting methods such as activated carbon filtration, porous ceramic sintered medium filtration, sludge filtration and the like.
Drawings
FIG. 1 is a block diagram of a volatile organic compound capture processing system of the present invention;
FIG. 2 is a schematic sectional view of the incinerator in FIG. 1;
fig. 3 is a schematic sectional structure view of the waste liquid tank of fig. 1.
In the figure: 1. a fan; 2. an atomizing spray chamber; 3. a gas-liquid conversion tank; 3.1, cooling a coil pipe; 3.2, a cooling machine; 3.3, a flow-adjustable pump; 3.4, a circulating liquid discharge pipe; 3.5, a circulating liquid outlet; 3.6, a waste liquid inlet pipe; 3.7, a water outlet; 4. a waste liquid storage tank; 5, a waste liquid incinerator; 5.1, incinerator shell; 5.2, a fan motor; 5.3, fan blades; 5.4, an incinerator inner container; 5.5, an electromagnetic heating component; 5.6, a waste liquid inlet pipe; 5.7, an air inlet; 5.8, an exhaust port; 6. an exhaust gas filter; 7. an ozone generator; 8. a first valve; 9. a first booster pump; 10. a second valve; 11. a filter; 12. a second booster pump; 13. a three-way valve; 14. a cold water inlet pipe; 15. a temperature rise or preservation control device; 16. a temperature reduction regulation device; 17. an atomizing spray head; 18. a spherical net; 19. a drain pipe; 20. a third valve; 21. an exhaust pipe; 22. a one-way valve.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 3, the invention is a volatile organic compound trapping treatment system, which comprises a fan 1, an atomizing spray chamber 2, a gas-liquid conversion tank 3, a waste liquid storage tank 4, a waste liquid incinerator 5 and a tail gas filter 6 which are connected in sequence, wherein a temperature control device is respectively arranged at the positions near an air inlet and an air outlet of the fan 1, the air outlet of the fan 1 is connected with the atomizing spray chamber 2, the atomizing spray chamber 2 is also connected with the gas-liquid conversion tank 3 and an ozone generator 7, a liquid discharge port on the gas-liquid conversion tank 3 is connected with a liquid inlet of the waste liquid storage tank 4, a liquid discharge port of the waste liquid storage tank 4 is connected with the waste liquid incinerator 5 through a first valve 8 and a first booster pump 9 in sequence, the gas-liquid conversion tank 3 is also connected with one end of a filter 11 through a second valve 10, the other end of the filter 11 is, the other two ends of the three-way valve 13 are respectively connected with a circulating liquid inlet pipe and a cold water inlet pipe 14 of the atomization spray chamber 2.
In order to prevent the condensation of the relatively low boiling point components in the VOC exhaust gas at the position of the fan 1 and to perform necessary cooling to reduce the temperature after the VOC exhaust gas passes through the fan 1, the preferred embodiment of the present invention is that an air inlet pipe is connected to the air inlet of the fan 1, an exhaust pipe is arranged between the air outlet of the fan 1 and the atomizing spray chamber 2, a temperature raising or preserving control device 15 is arranged on the air inlet pipe, and a temperature lowering control device 16 is arranged on the exhaust pipe.
In order to prevent the condensation of the relatively low boiling point components in the VOC exhaust gas at the position of the blower and control the temperature near the air inlet of the blower 1 within a set temperature range, a further preferred embodiment of the present invention is that the temperature-raising or temperature-maintaining control device comprises a hot air inlet pipe connected to the air inlet, or an air heater connected to the air inlet, and/or a temperature-maintaining jacket (not shown) attached to the outside of the air inlet pipe.
In order to ensure that the VOC exhaust gas is cooled as necessary after passing through the blower to reduce the temperature, a further preferred embodiment of the present invention is that the cooling regulation device comprises a cool air inlet pipe connected to the air outlet pipe, or an air cooler (not shown) installed on the air outlet pipe.
In order to facilitate the cooling water to be atomized into micron-sized atomized water mist, the VOC particles are effectively condensed into cooling water mist nuclei, so that the cooling water-coated VOC particles with the VOC particles as the center are effectively formed, the preferred embodiment of the invention is also that a plurality of atomizing spray heads 17 are arranged in the atomizing spray chamber 2, the atomizing spray heads 17 are connected with a circulating liquid inlet pipe and a cold water inlet pipe 14 of the atomizing spray chamber 2, the upper part of the atomizing spray heads 17 is provided with a spherical net 18, the water mist and the ozone are mixed in the spherical net 18, and the bottom of the atomizing spray chamber 2 is connected with the upper part of the gas-liquid conversion tank 3.
In order to convert the water-coated VOC particles coated with the cooling water in a water mist state into steam, carbon dioxide and granular carbon deposition by heating and burning, the preferred embodiment of the invention is that the waste liquid incinerator 5 comprises an incinerator shell 5.1, a fan motor 5.2 is arranged on the incinerator shell 5.1, fan blades 5.3 of the fan are arranged in the incinerator shell 5.1, an incinerator inner container 5.4 is arranged in the incinerator shell 5.1, an electromagnetic heating component 5.5 is arranged on the outer wall of the incinerator shell 5.1, a waste liquid inlet pipe 5.6 is arranged at the upper part of the incinerator shell 5.1, an air inlet 5.7 and an air outlet 5.8 are arranged on the side wall of the incinerator shell 5.1, and a tail gas filter 6 is connected to the air outlet 5.8.
In order to be able to burn the water-coated VOC particles coated with cooling water in the form of water mist into water vapor, carbon dioxide and carbon deposits in the form of particles by heating, it is a further preferred embodiment of the present invention that the electromagnetic heating means 5.5 comprise an electromagnetic coil disposed outside the incinerator housing 5.1, the electromagnetic coil being connected to a high-frequency electromagnetic oscillator, the high-frequency electromagnetic oscillator being connected to a controller (not shown).
In order to control the opening and closing time of the valve and the opening amount of the valve, the first valve 8, the second valve 10 and the three-way valve 13 comprise electromagnetic valves.
In order to facilitate the control of the waste water storage amount of the waste water storage tank 3 and the state of the waste water entering the waste water incinerator 4, the preferred embodiment of the present invention is that a liquid level sensor is installed in the gas-liquid conversion tank 3, the liquid level sensor is connected with a controller, and the controller is connected with an electromagnetic valve (not shown in the figure).
In order to facilitate the control of the inflow and outflow amounts of the waste liquid and the control of the temperature of the waste liquid in the gas-liquid conversion tank 3, in a preferred embodiment of the present invention, a cooling coil 3.1 is arranged at the bottom in the gas-liquid conversion tank 3, the cooling coil 3.1 is connected with a cooler 3.2, an adjustable flow pump 3.3 is arranged outside the gas-liquid conversion storage tank 3, a waste liquid inlet of the adjustable flow pump 3.3 is connected with a circulating liquid outlet 3.5 at the bottom of the gas-liquid conversion tank 3 through a circulating liquid outlet pipe 3.4, the circulation liquid outlet of the adjustable flow pump 3.3 is connected with the atomizing spray head 17 in the atomizing spray room 2 through a waste liquid inlet pipe 3.6, a water outlet 3.7 on the gas-liquid conversion tank 3 is arranged at the bottom of the tank body, the water outlet 3.7 is connected with the waste liquid storage tank 4 through a water outlet pipe 19, a third valve 20 is arranged on the water outlet pipe 19, an exhaust pipe 21 connected with an air outlet of the fan 1 is further arranged on the gas-liquid conversion tank 3, and a one-way valve 22 is connected on the exhaust pipe 21.
For example, the VOC gas in a factory enters the atomizing spray chamber 2 through the fan 1 and ozone at the same time, and organic components in the VOC gas react with the ozone to obtain liquid fire solid particles, namely, VOC particles. The liquid source of the atomization spray chamber 2 is pure water or waste liquid, when the liquid level of the waste liquid in the gas-liquid conversion tank 3 is lower than a set position, the three-way electromagnetic valve 13 is communicated with a pure cold water passage, and the pure cold water needs a certain common supply pressure; when the liquid level of the waste liquid in the gas-liquid conversion tank 3 is higher than the set position, the three-way electromagnetic valve is communicated with the second booster pump 12, the waste liquid in the gas-liquid conversion tank 3 is pumped into the atomization spraying chamber 2 by the second booster pump 12, and the waste liquid or pure cold water is atomized and then combined with the VOC particles to form water-coated VOC particles. Under the action of gravity, the water is coated with VOC particles and is settled in the gas-liquid conversion tank, after the operation is carried out for a period of time, the third valve 20 is opened, the waste liquid in the gas-liquid conversion tank 3 is transferred into the waste liquid storage tank 4, then the first valve 8 is opened, the second valve 10 is closed, and the waste liquid is pumped into the waste liquid incinerator 5 through the first booster pump 9.
The waste liquid incinerator 5 structurally comprises an incinerator shell 5.1, an incinerator inner container 5.4, a fan motor 5.2, fan blades 5.3, a VOC waste liquid inlet pipe 5.6, an electromagnetic heating component 5.5 and the like. The left side gate is communicated with the grading column and introduces air. The gasoline measuring pipe orifice is communicated with the tail gas filter 6 to discharge combustion tail gas. In operation, two waste liquid inlet pipes 5.6 are adopted, one is opened, and the other is reserved. After the VOC waste liquid enters the waste liquid incinerator 5, the VOC waste liquid is smashed and atomized by the fan blades 5.3 rotating at a high speed, and the VOC waste liquid is fully contacted with hot air in the hearth and is combusted. The combustion sediment sinks to the bottom of the combustion furnace inner container 5.4, and the incinerated tail gas leaves from the right measuring pipe orifice and enters the tail gas filter 6. After working for a plurality of hours, the incinerator is opened, the inner container 5.4 of the incinerator is taken out, and the incineration sediment is cleaned.
Tests show that the VOC gas treatment is carried out on the rubber scouring workshop by utilizing the trapping and treatment provided by the invention, and the non-methane total hydrocarbon discharged after final purification can be controlled to be 2mg/m2About 10mg/m which is obviously lower than the national standard2And (4) indexes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A volatile organic compound trapping and treating system is characterized by comprising a fan, an atomizing spray room, a gas-liquid conversion tank and a waste liquid storage tank which are sequentially connected, the waste liquid incinerator and the tail gas filter are characterized in that a temperature control device is arranged at the position near an air inlet and an air outlet of the fan respectively, the air outlet of the fan is connected with the atomizing spray chamber, the atomizing spray chamber is further connected with the gas-liquid conversion tank and the ozone generator, a liquid outlet on the gas-liquid conversion tank is connected with a liquid inlet of the waste liquid storage tank, the liquid outlet of the waste liquid storage tank sequentially passes through the first valve, the first booster pump is connected with the waste liquid incinerator, the gas-liquid conversion tank is further connected with one end of the filter through the second valve, the other end of the filter is connected with one end of the three-way valve through the second booster pump, and the other two ends of the three-way valve are connected with a.
2. The voc trapping treatment system according to claim 1, wherein an air inlet pipe is connected to an air inlet of the fan, an exhaust pipe is provided between an air outlet of the fan and the atomizing spray chamber, a temperature raising or maintaining control device is provided on the air inlet pipe, and a temperature lowering control device is provided on the exhaust pipe.
3. The voc trapping treatment system according to claim 2, wherein the temperature raising or maintaining control means comprises a hot air inlet duct connected to the air inlet, an air heater connected to the air inlet, and/or a thermal insulating jacket attached to the outside of the air inlet duct.
4. The voc trapping treatment system according to claim 2, wherein the temperature-lowering control means comprises a cold air inlet duct connected to the air outlet duct, or an air cooler installed on the air outlet duct.
5. The voc trapping and processing system according to claim 1, wherein a plurality of atomizing nozzles are arranged in the atomizing spray chamber, the atomizing nozzles are connected with the water inlet pipe and the cold water inlet pipe of the atomizing spray chamber, the upper part of the atomizing nozzles is provided with a spherical net, water mist is mixed with ozone in the spherical net, and the bottom of the atomizing spray chamber is connected with the upper part of the gas-liquid conversion tank.
6. The voc trapping and treating system according to claim 1, wherein the waste liquid incinerator comprises an incinerator housing, a fan motor is provided on the incinerator housing, fan blades are provided in the incinerator housing, an incinerator inner container is provided in the incinerator housing, an electromagnetic heating member is provided on an outer wall of the incinerator housing, a waste liquid inlet pipe is provided on an upper portion of the incinerator housing, an air inlet and an air outlet are provided on a side wall of the incinerator housing, and a tail gas filter is connected to the air outlet.
7. The voc trapping treatment system according to claim 6, wherein the electromagnetic heating means comprises an electromagnetic coil disposed outside the incinerator housing, the electromagnetic coil being connected to a high-frequency electromagnetic oscillator, the high-frequency electromagnetic oscillator being connected to the controller.
8. The voc trap processing system of claim 1, wherein the first valve, second valve, and three-way valve each comprise a solenoid valve.
9. The voc trapping treatment system according to claim 8, wherein a level sensor is installed in the gas-liquid conversion tank, and the level sensor is connected to a controller, and the controller is connected to the solenoid valve.
10. The voc trapping and processing system according to claim 8, wherein a cooling coil is disposed at the bottom of the gas-liquid conversion tank, the cooling coil is connected to the cooling machine, an adjustable flow pump is disposed outside the gas-liquid conversion tank, a waste liquid inlet of the adjustable flow pump is connected to a circulating liquid outlet at the bottom of the gas-liquid conversion tank through a circulating liquid outlet pipe, the circulating liquid outlet of the adjustable flow pump connects a liquid pipe to the atomizer in the atomizer chamber through waste liquid, a water outlet of the gas-liquid conversion tank is disposed at the bottom of the tank body, the water outlet is connected to the waste liquid storage tank through a water outlet pipe, a third valve is disposed on the water outlet pipe, a gas outlet pipe connected to an air outlet of the fan is further disposed on the gas-liquid conversion tank, and a check valve.
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| CN202110067104.4A CN112933900A (en) | 2021-01-19 | 2021-01-19 | Volatile organic compound trapping and treating system |
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Application publication date: 20210611 |