VOCs (volatile organic compounds) treatment device

Abstract

The invention belongs to the technical field of organic waste gas treatment, and particularly relates to a VOCs (volatile organic compounds) treatment device which comprises an upper box filled with cooling liquid; the lower box body is arranged at the bottom end of the upper box body; the air inlet spinning cooling mechanism is arranged in the upper box body, the air inlet end of the air inlet spinning cooling mechanism is located at the top end of the exterior of the upper box body, the air outlet end of the air inlet spinning cooling mechanism is located in the lower box body, the dust removal adsorption mechanism is detachably arranged on the upper portion of the interior of the lower box body, and the dust removal adsorption mechanism is located below the air outlet end of the air inlet spinning cooling mechanism. The dust removal and adsorption mechanism is used for filtering and adsorbing the cooled VOCs gas; the rotary spraying mechanism is fixedly arranged at the lower part in the lower box body, and the rotary spraying mechanism is used for spraying the filtered and adsorbed VOCs gas; and the exhaust pipe is fixedly communicated with the side wall of the lower box body. The treatment effect of the VOCs can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of organic waste gas treatment, and in particular relates to a VOCs treatment device. Background Art

[0002] Atmospheric environmental problems are becoming increasingly severe, and waste gas emission control is receiving more and more attention from the government and all sectors of society. Organic waste gas, as the main component of industrial waste gas, has a great impact on the atmospheric environment and human body. Therefore, during the industrial production process, the organic waste gas generated by industrial equipment needs to be filtered and purified with treatment equipment to avoid environmental pollution.

[0003] Since the sources and components of organic waste gas generated by different industrial equipment are complex, the difficulty of treatment and the treatment methods adopted are also different. The treatment method of conventional organic waste gas treatment devices is relatively single, and it is not possible to perform multi-stage treatment on organic waste gas with more complex components at the same time. Therefore, for organic waste gas with more complex components, it is necessary to use a combination of multiple treatment devices to purify it, which has poor practicality. Since the organic waste gas generated by industrial equipment is mostly at a high temperature, the continuous high temperature of the waste gas can easily cause damage to the internal parts of the device, and the conventional waste gas treatment device cannot quickly and effectively cool down the organic waste gas during operation, and thus cannot guarantee the stability and safety of the subsequent treatment of the organic waste gas, and has poor safety.

[0004] Therefore, it is necessary to design a VOCs treatment device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a VOCs treatment device to solve the above problems and achieve the purpose of improving the treatment effect of organic waste gas.

[0006] To achieve the above object, the present invention provides the following solution: a VOCs treatment device, comprising:

[0007] An upper box body, the interior of which is filled with coolant;

[0008] A lower box body, arranged at the bottom end of the upper box body;

[0009] An air intake spin cooling mechanism is arranged inside the upper box, an air intake end of the air intake spin cooling mechanism is located at the top of the outer side of the upper box, and an air outlet end of the air intake spin cooling mechanism is located inside the lower box. The VOCs gas to be treated enters the air intake spin cooling mechanism and exchanges heat with the coolant inside the upper box to cool down. The cooled VOCs gas enters the lower box. The force generated by the VOCs gas when flowing in the air intake spin cooling mechanism drives the air intake spin cooling mechanism to rotate and stir the coolant.

[0010] A dust removal and adsorption mechanism is detachably arranged above the interior of the lower box, the dust removal and adsorption mechanism is located below the outlet end of the air intake spin cooling mechanism, and the dust removal and adsorption mechanism is used to filter and adsorb the VOCs gas after the temperature is reduced;

[0011] A rotary spray mechanism is fixedly arranged at the lower part of the lower box body, and is used to spray the VOCs gas after filtering and adsorption;

[0012] The exhaust pipe is fixedly connected to the side wall of the lower box body.

[0013] A VOCs processing device based on the present invention, the air intake spin cooling mechanism includes an air compressor, the air compressor is fixedly arranged at the top end of the outer side of the upper box body, the air inlet of the air compressor is fixedly connected to an air intake pipe, the air outlet of the air compressor is fixedly connected to one end of a connecting pipe, the other end of the connecting pipe passes through the top wall of the upper box body and is fixedly connected to the middle part of a branch pipe, the two ends of the branch pipe are respectively connected to the air intake end of the spin cooling component, and the air outlet end of the spin cooling component is located inside the lower box body.

[0014] A VOCs processing device based on the present invention, the spin cooling component includes a sealed bearing, the inner ring of the sealed bearing is sealed and connected to the end of the branch pipe, the outer ring of the sealed bearing is fixedly connected to one end of a connecting pipe, the other end of the connecting pipe is fixedly connected to the top of a gas distribution plate, the gas distribution plate is hollow inside, the bottom end of the gas distribution plate is fixedly connected to the top of a plurality of inclined air pipes, the plurality of air pipes are arranged at equal intervals along the circumference of the gas distribution plate, the bottom ends of the plurality of air pipes are fixedly connected to sealing covers, the sealing covers are rotatably and sealingly arranged on the top of an air box, the air box is fixedly connected to the inner bottom wall of the upper box body, the bottom wall of the air box is fixedly connected to a nozzle, and the nozzle end of the nozzle is located inside the lower box body.

[0015] According to a VOCs treatment device of the present invention, a liquid inlet pipe is fixedly connected to the bottom of one side wall of the upper box body, a valve is provided on the liquid inlet pipe, and a liquid outlet pipe is fixedly connected to the top of the other opposite side wall of the upper box body.

[0016] A VOCs processing device based on the present invention, the dust removal and adsorption mechanism includes a first magnetic plate and a second magnetic plate, one end of a filter plate is fixedly connected to the middle of the side wall of the first magnetic plate, the filter plate is slidably arranged inside the lower box body, one end of an adsorption plate is fixedly connected to the middle of the side wall of the second magnetic plate, the adsorption plate is slidably arranged inside the lower box body and is located below the filter plate, a plurality of dust collecting grooves are opened on the top of the filter plate, a scraping assembly is fixedly connected to the top wall of the lower box body, and the action end of the scraping assembly is in sliding contact with the top of the filter plate.

[0017] A VOCs processing device based on the present invention, the scraping assembly includes a first motor, the first motor is fixedly connected to the top wall of the lower box body, the output end of the first motor is fixedly connected to a scraper bar, and the bottom end of the scraper bar is in sliding contact with the top end of the filter plate.

[0018] A VOCs treatment device based on the present invention, the inner wall of the lower box body is fixedly connected to a partition, the partition is located below the exhaust pipe, the rotary spray mechanism includes a circulation pump, the circulation pump is fixedly connected to the inner bottom wall of the lower box body, the liquid outlet of the circulation pump is rotatably connected to one end of a hollow shaft, the hollow shaft rotates through the partition, the other end of the hollow shaft is fixedly connected to the middle of a liquid dispensing tube, the bottom wall of the liquid dispensing tube is fixedly connected to a plurality of atomizing nozzles arranged at equal intervals, the outer wall of the hollow shaft is fixedly connected to a rotation drive unit, and the rotation drive unit is fixedly connected to the bottom end of the partition.

[0019] A VOCs processing device based on the present invention, the rotating drive unit includes a second motor, the second motor is fixedly connected to the bottom end of the partition, the output shaft of the second motor is fixedly connected to a driving gear, the outer wall of the hollow rotating shaft is fixedly sleeved with a driven gear, the driven gear is meshed with the driving gear, and the outer wall of the hollow rotating shaft is also fixedly connected to a stirring blade.

[0020] According to a VOCs treatment device of the present invention, a drain plug is detachably connected to the bottom of one side wall of the lower box body, and a filling plug is detachably connected to the other opposite side wall of the lower box body, and the filling plug is located below the partition.

[0021] In a VOCs processing device according to the present invention, the side wall of the upper box body is hinged with two sealed doors, and the sealed doors are provided with handles.

[0022] Compared with the prior art, the present invention has the following advantages and technical effects:

[0023] The present invention can introduce VOCs gas that needs to be treated into the upper box body through the air intake spin cooling mechanism, and cool the VOCs gas by filling the upper box body with continuously circulating coolant. When the VOCs gas flows in the air intake spin cooling mechanism, the reverse thrust pushes the air intake spin cooling mechanism to continuously rotate and stirs the coolant, thereby improving the cooling effect of the coolant on the VOCs gas. The cooled VOCs gas enters the lower box body, first undergoes filtering and dust removal treatment and the first adsorption treatment by the dust removal and adsorption mechanism, and then the rotary spray mechanism sprays the treatment liquid to perform a second adsorption treatment on the VOCs gas. The gas after the two adsorption treatments is discharged from the lower box body through the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0025] Figure 1 It is an overall schematic diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0027] Among them, 1. upper box body; 2. lower box body; 3. air compressor; 4. air inlet pipe; 5. liquid inlet pipe; 6. valve; 7. liquid outlet pipe; 8. first magnetic plate; 9. second magnetic plate; 10. exhaust pipe; 11. sealed door; 12. handle; 13. connecting pipe; 14. branch pipe; 15. sealed bearing; 16. connecting pipe; 17. air distribution plate; 18. air pipe; 19. sealing cover; 20. air box; 21. jet head; 22. first motor; 23. scraper; 24. filter plate; 25. dust collecting tank; 26. adsorption plate; 27. partition; 28. circulating pump; 29. ​​hollow shaft; 30. liquid distribution pipe; 31. atomizing nozzle; 32. second motor; 33. driving gear; 34. driven gear; 35. stirring blade; 36. drain plug; 37. filling plug. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] VOCs is the abbreviation of volatile organic compounds, which refers to organic compounds with a saturated vapor pressure greater than 70 Pa at room temperature and a boiling point below 260°C at normal pressure, or all organic compounds with corresponding volatility and a vapor pressure greater than or equal to 10 Pa at 20°C.

[0030] VOCs outdoors mainly come from fuel combustion and transportation; indoors they mainly come from combustion products such as coal and natural gas, smoke from smoking, heating and cooking, emissions from building and decoration materials, furniture, household appliances, cleaning agents and the human body. Tobacco industry: inks, organic solvents; textile industry: glue used in footwear products; toy industry: correction fluid, scented toys, etc.; furniture decoration materials: coatings, paints, adhesives, etc.; automotive parts materials: glue, paints, etc.; electrical and electronic industry: VOCs that evaporate when used at higher temperatures, cleaning solvents for electronic hardware, etc.; others: detergents, cleaners, fabric softeners, cosmetics, office supplies, wallpaper and other decorations.

[0031] There are several definitions of VOCs. For example, the American ASTM further standard D3960-98 defines VOC as any organic compound that can participate in atmospheric photochemical reactions. The definition of the US Federal Environmental Protection Agency (EPA): Volatile organic compounds are any carbon compounds that participate in atmospheric photochemical reactions, except CO, CO2, H2CO3, metal carbides, metal carbonates and ammonium carbonate. The World Health Organization (WHO, 1989) defines total volatile organic compounds (TVOC) as a general term for volatile organic compounds with a melting point below room temperature and a boiling point between 50 and 260°C. The international standard ISO 4618 / 1-1998 on general terms for paints and varnishes and the German DIN further standard 55649-2000 define VOC as, in principle, any organic liquid and / or solid that can spontaneously evaporate at normal temperature and pressure. At the same time, the German DIN 55649-2000 standard further defines VOC content as any organic compound with a boiling point or initial distillation point lower than or equal to 250°C under normal pressure conditions. BASF believes that the most convenient and common method is to define which substances belong to VOC based on boiling point, and the most common consensus is that VOC refers to chemical substances with a boiling point equal to or lower than 250°C. Therefore, substances with a boiling point exceeding 250°C are not classified as VOCs and are often called plasticizers.

[0032] These definitions have similarities, but they also have different focuses. For example, the US definition does not limit the boiling point and initial distillation point, and emphasizes participating in atmospheric photochemical reactions. Solvents that do not participate in atmospheric photochemical reactions are called exempt solvents, such as acetone and tetrachloroethane. The World Health Organization and BASF define the boiling point or initial distillation point, regardless of whether it participates in atmospheric photochemical reactions. The international standard ISO further 4618 / 1-1998 and the German DIN further 55649-2000 standard do not limit the boiling point and initial distillation point, regardless of whether it participates in atmospheric photochemical reactions, but only emphasize that it can spontaneously evaporate at normal temperature and pressure.

[0033] These VOC definitions can be divided into two categories. One is the VOC definition in the ordinary sense, which only explains what volatile organic compounds are, or under what conditions they are volatile organic compounds; the other is the definition in the environmental sense, that is, the active type of volatile organic compounds, that is, the type of volatile organic compounds that will cause harm. Obviously, from the environmental sense, volatilization and participation in atmospheric photochemical reactions are very important. If they do not volatilize or do not participate in atmospheric photochemical reactions, they will not cause harm. This is why Europe classifies solvents according to their potential to produce photochemical ozone.

[0034] According to the WHO definition, volatile organic compounds (VOC) refer to various organic compounds with a boiling point of 50°C to 260°C at room temperature. VOCs can be further divided into alkanes, aromatic hydrocarbons, esters, aldehydes and others according to their further chemical structure, and more than 300 types have been identified. The most common ones are benzene, further toluene, further xylene, further styrene, further trichloroethylene, further trichloromethane, trichloroethane, further diisocyanate (TDI), diisocyanatotoluene, etc.

[0035] Formaldehyde is also a volatile organic compound, but it is more soluble in water, which is different from other volatile organic compounds. It has a wide range of indoor sources and releases high concentrations. Therefore, formaldehyde is often described separately from other volatile organic compounds.

[0036] Except for formaldehyde, most volatile organic compounds are generally insoluble in water but soluble in organic solvents. Their individual concentrations are often not very high indoors, but when several VOCs coexist in the indoor air, their combined effect cannot be ignored. Due to their variety and low concentration of individual components, TVOC is often used to represent the total amount of volatile organic compounds in the room. TVOC is an important indicator to measure the degree of influence of indoor items such as decoration and furniture in buildings on further indoor air quality.

[0037] The VOC in wood paint is a volatile substance. Harmful substances such as formaldehyde, benzene, and xylene will slowly evaporate. The damage process is slow and not easy to attract people's attention. By the time people find that they are seriously uncomfortable, the degree of damage to the human body by harmful substances has become quite serious.

[0038] The main hazards are as follows:

[0039] According to the latest research data, toluene and xylene will produce certain photoelectric reactions after entering the atmosphere, which will have a certain destructive effect on the ozone layer.

[0040] In polyurethane (PUR) wood paint, only when the free TDI is less than 0.5% will it not cause toxicity to the human body; because at low concentrations, free TDI is not easy to escape from the system and does not form TDI vapor that is toxic to the human body. In the current national standard, the free TDI is stipulated to be less than 0.7% after the oil-based paint is prepared. In fact, the curing agent group alone is still highly toxic. Because the level of the domestic TDI polymerization industry is far behind that of developed countries, the national standard range is relatively wide from the perspective of protecting the national industry.

[0041] In summary, VOC in wood paint has a significant impact on human health and the earth's environment. Since VOC itself is extremely harmful, it has been described as the "invisible killer" of mankind. How to reduce and eliminate VOC in wood paint has also become a new development goal of the coatings industry.

[0042] VOCs are organic (carbon-based) gases, also known as hydrocarbons, emitted by many different products. The evaporation of VOCs is caused by sufficient pressure.

[0043] Common sources of indoor volatile organic compounds are building materials, carpets, printers, furniture, paint thinners, glues, cosmetics and certain sprays, as well as plastic products. According to the Environmental Protection Agency, if there is not enough ventilation to circulate the air and VOCs are present indoors, the indoor air pollution will be 10 times more serious than the outdoor air.

[0044] The main components of VOC are: hydrocarbons, halogenated hydrocarbons, oxygen hydrocarbons and nitrogen hydrocarbons, including: benzene series, organic chlorides, Freon series, organic ketones, amines, alcohols, ethers, esters, acids and petroleum hydrocarbon compounds. VOC is the English abbreviation of volatile organic compounds. The chemical substances in wall paint that are harmful to the human body (except heavy metals) usually refer to VOC. These volatile organic compounds include ethylene glycol, esters and other substances. When the VOC in the room reaches a certain concentration, it will cause symptoms such as headache, nausea, vomiting, fatigue, and even convulsions and coma in severe cases, damage the liver, kidneys, brain and nervous system, and cause serious consequences such as memory loss.

[0045] When the concentration of volatile organic compounds in indoor air is too high, it can easily cause acute poisoning. In mild cases, patients may experience headaches, dizziness, coughing, nausea, vomiting, or drunkenness; in severe cases, patients may suffer from liver poisoning and even quickly fall into a coma, and some may even be life-threatening.

[0046] Long-term living in a room polluted by volatile organic compounds can cause chronic poisoning, damage the liver and nervous system, cause general weakness, drowsiness, skin itching, etc. Some may also cause endocrine disorders and affect sexual function; benzene and xylene can also damage the body and even cause leukemia.

[0047] Foreign medical research has confirmed that pregnant women living in an environment polluted by volatile organic compounds have a much higher chance of fetal malformation than ordinary people, and may affect the child's future intellectual development. At the same time, volatile organic compounds in indoor air are an important cause of children's nervous system, further blood system, and children's acquired diseases.

[0048] VOCs Pollution Prevention and Control

[0049] A further source and process control

[0050] (1) In the oil refining and petrochemical industries, we encourage the use of advanced clean production technologies to improve the conversion and utilization efficiency of crude oil. Technical measures for the prevention and control of VOCs-containing waste gas pollution generated by equipment and pipeline components, process exhaust, waste gas combustion towers (flares), and wastewater treatment processes include:

[0051] 1. For equipment and pipeline components prone to leakage, such as pumps, compressors, valves, flanges, etc., formulate a leak detection and repair (LDAR) plan, conduct regular inspections and timely repairs to prevent or reduce leakage;

[0052] 2. The VOCs-containing process exhaust gas emitted by the production equipment should be recycled first. If it cannot be (or cannot be completely) recycled, it should be treated and discharged in compliance with the standards. The vented gas in emergency situations can be introduced into the combustion tower (torch) and discharged after being fully burned.

[0053] 3. The VOCs-containing waste gas generated during the wastewater collection and treatment process is collected and treated before being discharged in compliance with emission standards.

[0054] (2) In the coal processing and conversion industry, we encourage the use of advanced clean production technologies to achieve efficient and clean coal conversion, focus on identifying and troubleshooting locations prone to VOCs leakage in process equipment and pipeline components, and formulate measures to prevent VOCs leakage and deal with emergencies.

[0055] (3) Technical measures for the prevention and control of VOCs pollution during the storage, transportation and sales of oils (fuels, solvents) include:

[0056] 1. Oil storage depots, gas stations and oil tankers should be equipped with corresponding oil and gas collection systems, and oil storage depots and gas stations should be equipped with corresponding oil and gas recovery systems;

[0057] 2. Oil (fuel, solvent, etc.) storage tanks should use highly efficient sealed internal (external) floating roof tanks. When fixed roof tanks are used, the VOCs-containing gas should be transported to the recovery equipment through a closed exhaust system;

[0058] 3. VOCs emitted by oil (fuel, solvent, etc.) carriers (truck tankers, railway tank cars, tankers, etc.) during the loading process are collected and transported to recovery equipment in a closed manner. They can also be returned to storage tanks or sent to the gas pipeline network.

[0059] (4) Technical measures for the prevention and control of VOCs pollution in production industries such as coatings, inks, adhesives, and pesticides that use VOCs as raw materials include:

[0060] 1. Encourage the production and sale of water-based, organic solvent-free, low-organic solvent coatings, inks and adhesives that meet the technical requirements of environmental labeling products;

[0061] 2. Encourage the use of closed integrated production technology, and classify and collect waste gas generated during the production process for post-treatment.

[0062] (5) Technical measures for the prevention and control of VOCs pollution during the use of VOCs-containing products such as painting, printing, bonding, and industrial cleaning include:

[0063] 1. Encourage the use of environmentally friendly coatings, inks, adhesives and cleaning agents that have passed the environmental labeling product certification;

[0064] 2. According to different coating processes, the use of environmentally friendly coatings such as water-based coatings, high-solid coatings, powder coatings, and ultraviolet curing (UV) coatings is encouraged; the use of more efficient coating processes such as electrostatic spraying, curtain coating, roller coating, and dipping coating is promoted; open-air spraying operations without VOCs purification and recycling measures should be avoided as much as possible;

[0065] 3. Promote the use of water-based inks in printing processes, encourage the use of ultraviolet curing (UV) inks in the tinplate and canning industries, and encourage the use of pre-coating technology in the book and magazine printing industry;

[0066] 4. Encourage the use of environmentally friendly adhesives such as water-based and hot-melt adhesives in the bonding process of artificial boards, shoes, leather products, packaging materials, etc., and promote solvent-free lamination and co-extrusion lamination technology in the production of composite films;

[0067] 5. Eliminate production processes that use trifluorotrichloroethane, methyl chloroform and carbon tetrachloride as cleaning agents or solvents. Waste solvents generated during the cleaning process should be collected in a closed manner, and waste solvents with recycling value should be reused after treatment, and other waste solvents should be properly disposed of;

[0068] 6. During the use of products containing VOCs, waste gas collection measures should be taken to improve waste gas collection efficiency, reduce unorganized emissions and escape of waste gas, and recycle or treat the collected waste gas to meet emission standards.

[0069] (6) Technical measures for the prevention and control of VOCs pollution from living sources such as building decoration, clothing dry cleaning, and restaurant fumes include:

[0070] 1. Promote the use of architectural coatings, low-organic solvent wood paints and adhesives that meet the technical requirements of environmental labeling products in the building decoration industry, and gradually reduce the use of organic solvent coatings;

[0071] 2. In the clothing dry cleaning industry, the production and use of open dry cleaning machines should be eliminated, and the use of closed dry cleaning machines equipped with compressor refrigeration solvent recovery systems should be promoted, and the use of dry cleaning machines equipped with activated carbon adsorption devices should be encouraged;

[0072] 3. In the catering service industry, we encourage the use of clean energy such as pipeline gas, natural gas, electricity, etc.; and advocate a low-fume, low-pollution, and low-energy eating style.

[0073] 2. Further end-of-pipe treatment and comprehensive utilization

[0074] (1) Encourage the recycling of VOCs in industrial production processes, and give priority to reuse within the production system.

[0075] (2) For waste gas containing high concentrations of VOCs, condensation recovery and adsorption recovery technologies should be used for recycling and utilization, and other treatment technologies should be used to assist in achieving standard emissions.

[0076] (3) For waste gas containing medium concentrations of VOCs, adsorption technology can be used to recover organic solvents, or catalytic combustion and thermal incineration technology can be used to purify the waste gas and ensure that it meets emission standards. When catalytic combustion and thermal incineration technology are used for purification, waste heat should be recovered and utilized.

[0077] (4) For waste gas containing low concentrations of VOCs, if there is recovery value, adsorption technology or absorption technology can be used to recover the organic solvent and then meet the emission standards; if it is not suitable for recovery, adsorption concentration combustion technology, biotechnology, absorption technology, plasma technology or ultraviolet advanced oxidation technology can be used for purification and then meet the emission standards.

[0078] (5) Waste gas containing organic halogen components (VOCs) should be treated using non-incineration technology.

[0079] (6) Malodorous gas pollution sources can be purified by biotechnology, plasma technology, adsorption technology, absorption technology, ultraviolet advanced oxidation technology or a combination of technologies. In addition to meeting the requirements for emission standards, the purified malodorous gas should also be discharged at high altitudes to avoid nuisance to the public.

[0080] (7) Promote the use of oil fume extraction devices with oil mist recovery function in the catering service industry, and use high-efficiency oil fume and VOCs purification devices to purify the fume and VOCs to meet emission standards according to the scale, site and climatic conditions.

[0081] (8) Strictly control the secondary pollution generated during the VOCs treatment process. For inorganic waste gases containing sulfur, nitrogen, chlorine, etc. generated during catalytic combustion and thermal incineration, as well as organic wastewater generated during adsorption, absorption, condensation, biological and other treatment processes, they should be treated and discharged in compliance with the standards.

[0082] (9) Non-regenerable purification materials such as filter materials, adsorbents and catalysts should be handled and disposed of in accordance with relevant national regulations on solid waste management.

[0083] III. Encourage the development of new technologies, new materials and new equipment

[0084] Encourage the research, development and promotion of the following new technologies, new materials and new equipment:

[0085] (1) Clean production technologies that can reduce the formation and volatilization of VOCs during industrial production processes.

[0086] (2) Rotating molecular sieve adsorption concentration technology, high-efficiency regenerative catalytic combustion technology (RCO) and regenerative thermal combustion technology (RTO), nitrogen cycle desorption adsorption recovery technology, high-efficiency water-based enhanced absorption technology, and other biological purification technologies and low-temperature plasma purification technologies for specific organic pollutants.

[0087] (3) High-efficiency adsorption materials (such as special-purpose activated carbon, high-strength activated carbon fiber, modified hydrophobic molecular sieve and silica gel, etc.), catalytic materials (such as broad-spectrum VOCs oxidation catalysts, etc.), high-efficiency biological fillers and absorbents, etc.

[0088] (4) Equipment for recovery and comprehensive utilization of volatile organic compounds.

[0089] IV. Operation and Monitoring

[0090] (1) Enterprises are encouraged to conduct VOCs monitoring of Biomedicon on their own and report the monitoring results to the local environmental protection administrative department in a timely and proactive manner.

[0091] (2) Enterprises should establish and improve daily management systems such as operation and maintenance procedures and records for VOCs treatment facilities, and regularly inspect and maintain various equipment, electrical and automatic control instruments according to process requirements to ensure the stable operation of the facilities.

[0092] (3) When using methods such as adsorption recovery (concentration), catalytic combustion, thermal incineration, plasma, etc. for end-of-pipe treatment, an emergency rescue plan for accidental fire, explosion, etc. should be prepared, emergency rescue personnel and equipment should be deployed, and emergency drills should be conducted.

[0093] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0094] Reference Figure 1 to Figure 2 As shown, the present invention provides a VOCs treatment device, comprising

[0095] The upper box 1 is filled with coolant;

[0096] The lower box body 2 is arranged at the bottom end of the upper box body 1;

[0097] The air intake spin cooling mechanism is arranged inside the upper box body 1, the air intake end of the air intake spin cooling mechanism is located at the top of the upper box body 1, and the air outlet end of the air intake spin cooling mechanism is located inside the lower box body 2. The VOCs gas to be treated enters the air intake spin cooling mechanism and exchanges heat with the coolant inside the upper box body 1 to cool down. The cooled VOCs gas enters the lower box body 2. The force generated by the VOCs gas when flowing in the air intake spin cooling mechanism drives the air intake spin cooling mechanism to rotate and stir the coolant.

[0098] The dust removal and adsorption mechanism is detachably arranged on the upper part of the lower box body 2, and the dust removal and adsorption mechanism is located below the outlet end of the air inlet spin cooling mechanism, and the dust removal and adsorption mechanism is used to filter and adsorb the VOCs gas after the temperature is reduced;

[0099] The rotary spray mechanism is fixedly arranged at the lower part of the lower box 2, and is used to spray the VOCs gas after filtering and adsorption;

[0100] The exhaust pipe 10 is fixedly connected to the side wall of the lower box body 2 .

[0101] Furthermore, the air intake spin cooling mechanism includes an air compressor 3, which is fixedly arranged at the top end of the outer upper box body 1, and the air inlet of the air compressor 3 is fixedly connected to the air intake pipe 4, and the air outlet of the air compressor 3 is fixedly connected to one end of the connecting pipe 13, and the other end of the connecting pipe 13 passes through the top wall of the upper box body 1 and is fixedly connected to the middle part of the branch pipe 14, and the two ends of the branch pipe 14 are respectively connected to the air intake end of the spin cooling component, and the air outlet end of the spin cooling component is located inside the lower box body 2.

[0102] Furthermore, the spin cooling component includes a sealed bearing 15, the inner ring of the sealed bearing 15 is sealed and connected to the end of the branch pipe 14, the outer ring of the sealed bearing 15 is fixedly connected to one end of a connecting pipe 16, the other end of the connecting pipe 16 is fixedly connected to the top of an air distribution plate 17, the interior of the air distribution plate 17 is hollow, the bottom end of the air distribution plate 17 is fixedly connected to the top of a plurality of inclined air pipes 18, the plurality of air pipes 18 are arranged at equal intervals along the circumference of the air distribution plate 17, the bottom ends of the plurality of air pipes 18 are fixedly connected to a sealing cover 19, the sealing cover 19 is rotatably and sealingly arranged at the top of an air box 20, the air box 20 is fixedly connected to the inner bottom wall of the upper box body 1, the bottom wall of the air box 20 is fixedly connected to a nozzle 21, and the nozzle end of the nozzle 21 is located inside the lower box body 2.

[0103] Furthermore, a liquid inlet pipe 5 is fixedly connected to the bottom of one side wall of the upper box body 1 , and a valve 6 is provided on the liquid inlet pipe 5 . A liquid outlet pipe 7 is fixedly connected to the top of another opposite side wall of the upper box body 1 .

[0104] Furthermore, the dust removal and adsorption mechanism includes a first magnetic plate 8 and a second magnetic plate 9. One end of a filter plate 24 is fixedly connected to the middle of the side wall of the first magnetic plate 8, and the filter plate 24 is slidably arranged inside the lower box body 2. One end of an adsorption plate 26 is fixedly connected to the middle of the side wall of the second magnetic plate 9, and the adsorption plate 26 is slidably arranged inside the lower box body 2 and is located below the filter plate 24. A plurality of dust collecting grooves 25 are provided at the top of the filter plate 24. A scraping assembly is fixedly connected to the top wall of the lower box body 2, and the action end of the scraping assembly is in sliding contact with the top of the filter plate 24.

[0105] Furthermore, the scraping assembly includes a first motor 22, which is fixedly connected to the top wall of the lower box body 2, and a scraper bar 23 is fixedly connected to the output end of the first motor 22, and the bottom end of the scraper bar 23 is in sliding contact with the top end of the filter plate 24.

[0106] Furthermore, a partition 27 is fixedly connected to the inner wall of the lower box body 2, and the partition 27 is located below the exhaust pipe 10. The rotary spray mechanism includes a circulation pump 28, which is fixedly connected to the inner bottom wall of the lower box body 2. The liquid outlet of the circulation pump 28 is rotatably connected to one end of a hollow shaft 29, and the hollow shaft 29 rotates through the partition 27. The other end of the hollow shaft 29 is fixedly connected to the middle part of a liquid dispensing tube 30. The bottom wall of the liquid dispensing tube 30 is fixedly connected to a plurality of equally spaced atomizing nozzles 31. The outer wall of the hollow shaft 29 is fixedly connected to a rotary drive unit, and the rotary drive unit is fixedly connected to the bottom end of the partition 27.

[0107] Furthermore, the rotating drive unit includes a second motor 32, which is fixedly connected to the bottom end of the partition 27. The output shaft of the second motor 32 is fixedly connected to a driving gear 33. A driven gear 34 is fixedly sleeved on the outer wall of the hollow rotating shaft 29. The driven gear 34 is meshed with the driving gear 33. A stirring blade 35 is also fixedly connected to the outer wall of the hollow rotating shaft 29.

[0108] Furthermore, a drain plug 36 is detachably connected to the bottom of one side wall of the lower box body 2 , and a filling plug 37 is detachably connected to the other opposite side wall of the lower box body 2 , and the filling plug 37 is located below the partition 27 .

[0109] Furthermore, two sealed doors 11 are hinged on the side walls of the upper box body 1 , and handles 12 are provided on the sealed doors 11 .

[0110] The working process of the present invention is as follows:

[0111] When it is necessary to treat the organic waste gas, first, coolant is filled into the upper box body 1 through the liquid inlet pipe 5. The valve 6 is a one-way valve to prevent the coolant from flowing back. When the upper box body 1 is filled with coolant, it overflows from the liquid outlet pipe 7. The liquid inlet pipe 5 is continuously filled with coolant, so that the coolant in the upper box body 1 can be continuously circulated. Then, the organic waste gas is passed into the air compressor 3 through the air inlet pipe 4. The air compressor 3 compresses the organic waste gas to form high-pressure gas. The high-pressure gas enters the gas distribution plate 17 through the branch pipe 14, and further enters the inside of a plurality of air pipes 18. Since the air pipe 18 is arranged at an angle, when the high-pressure gas is ejected from the bottom end of the air pipe 18, a reverse thrust is generated on the air pipe 18. , and because the air pipe 18 is rotatably connected to the branch pipe 14 and the air box 20 through the sealed bearing 15 and the sealed cover 19, the air pipe 18 will rotate under the continuous action of the reverse thrust, and the air pipe 18 will produce a stirring effect on the coolant during the rotation process, which can increase the heat exchange effect between the high-temperature gas inside the air pipe 18 and the coolant, thereby improving the cooling effect of the high-temperature gas. The cooled gas enters the lower box 2 through the nozzle 21, and passes through the filter plate 24 and the adsorption plate 26 in turn. When passing through the filter plate 24, the dust contained in the gas is filtered out, and the filtered dust is accumulated on the filter plate 24. When a lot of dust is accumulated on the filter plate 24 and affects the filtering effect, the first motor 22 is started, and the first motor 2 2 drives the scraper 23 to rotate continuously, cleans the accumulated dust into the dust collecting tank 25, ensures the filtering effect of the filter plate 24, and when the filtered gas passes through the adsorption plate 26, it is adsorbed by the activated carbon on the adsorption plate 26, and the acid-base neutralizer and oxidant are added into the lower box 2 through the liquid adding plug 37. The liquid level of the acid-base neutralizer and oxidant is maintained between the stirring blade 35 and the second motor 32. After the organic gas enters the lower part of the adsorption plate 26, the circulation pump 28 works to pump the acid-base neutralizer and oxidant into the liquid dispensing pipe 30, and sprays them out from the atomizing nozzle 31, so as to further process the organic gas. In the process of spraying the acid-base neutralizer and oxidant, the second motor 32 works, and the driving gear 33 and the driven gear 33 are connected to the second motor 32. 4 drives the atomizing nozzle 31 and the stirring blade 35 to rotate continuously. The rotation of the atomizing nozzle 31 can improve the treatment effect of the organic gas. A plurality of leakage holes are opened on the partition 27. The acid-base neutralizer and the oxidant after treating the organic gas fall back to the bottom of the partition 27 through the leakage holes. The rotation of the stirring blade 35 can ensure the mixing effect of the acid-base neutralizer and the oxidant to prevent them from precipitating. The circulation pump 28 can realize the recycling of the acid-base neutralizer and the oxidant. When the acid-base neutralizer and the oxidant are used for a certain period of time and the effect is reduced, they are discharged through the drain plug 36, and then new acid-base neutralizer and oxidant are refilled into the lower box 2. The gas after spraying reaches the emission standard and is discharged through the exhaust pipe 10.

[0112] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0113] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope of the present invention.

Claims

1. A VOCs treatment device, characterized in that: include An upper box (1) filled with coolant; A lower box body (2) is arranged at the bottom end of the upper box body (1); An air intake spin cooling mechanism is arranged inside the upper box (1), an air intake end of the air intake spin cooling mechanism is located at the top end of the outer side of the upper box (1), and an air outlet end of the air intake spin cooling mechanism is located inside the lower box (2). VOCs gas to be treated enters the air intake spin cooling mechanism and exchanges heat with the coolant inside the upper box (1) to reduce its temperature. The cooled VOCs gas enters the lower box (2). The force generated by the VOCs gas when flowing in the air intake spin cooling mechanism drives the air intake spin cooling mechanism to rotate and stir the coolant. A dust removal and adsorption mechanism is detachably arranged above the interior of the lower box (2), the dust removal and adsorption mechanism is located below the outlet end of the air intake spin cooling mechanism, and the dust removal and adsorption mechanism is used to filter and adsorb the VOCs gas after the temperature is reduced; A rotary spray mechanism, fixedly arranged at the lower part of the lower box (2), the rotary spray mechanism being used to spray the VOCs gas after filtering and adsorption; An exhaust pipe (10) is fixedly connected to the side wall of the lower box body (2).

2. A VOCs treatment device according to claim 1, characterized in that: The air intake auto-spin cooling mechanism comprises an air compressor (3), the air compressor (3) is fixedly arranged at the top end of the outer side of the upper housing (1), the air intake of the air compressor (3) is fixedly connected to an air intake pipe (4), the air outlet of the air compressor (3) is fixedly connected to one end of a connecting pipe (13), the other end of the connecting pipe (13) passes through the top wall of the upper housing (1) and is fixedly connected to the middle part of a branch pipe (14), the two ends of the branch pipe (14) are respectively connected to the air intake end of the auto-spin cooling component, and the air outlet end of the auto-spin cooling component is located inside the lower housing (2).

3. A VOCs treatment device according to claim 2, characterized in that: The spin cooling component comprises a sealed bearing (15), the inner ring of the sealed bearing (15) is sealedly connected to the end of the branch pipe (14), the outer ring of the sealed bearing (15) is fixedly connected to one end of a connecting pipe (16), the other end of the connecting pipe (16) is fixedly connected to the top of a gas distribution plate (17), the gas distribution plate (17) is hollow inside, the bottom end of the gas distribution plate (17) is fixedly connected to the top of a plurality of inclined air pipes (18), the plurality of air pipes (18) are arranged at equal intervals along the circumference of the gas distribution plate (17), the bottom ends of the plurality of air pipes (18) are fixedly connected to a sealing cover (19), the sealing cover (19) is rotatably and sealingly arranged at the top of an air box (20), the air box (20) is fixedly connected to the inner bottom wall of the upper box body (1), the bottom wall of the air box (20) is fixedly connected to a nozzle (21), and the nozzle end of the nozzle (21) is located inside the lower box body (2).

4. A VOCs treatment device according to claim 1, characterized in that: A liquid inlet pipe (5) is fixedly connected to the bottom of one side wall of the upper box body (1), and a valve (6) is provided on the liquid inlet pipe (5). A liquid outlet pipe (7) is fixedly connected to the top of the other opposite side wall of the upper box body (1).

5. A VOCs treatment device according to claim 1, characterized in that: The dust removal and adsorption mechanism comprises a first magnetic plate (8) and a second magnetic plate (9); one end of a filter plate (24) is fixedly connected to the middle of a side wall of the first magnetic plate (8); the filter plate (24) is slidably arranged inside the lower box body (2); one end of an adsorption plate (26) is fixedly connected to the middle of a side wall of the second magnetic plate (9); the adsorption plate (26) is slidably arranged inside the lower box body (2) and is located below the filter plate (24); a plurality of dust collecting grooves (25) are provided at the top of the filter plate (24); a scraping component is fixedly connected to the inner top wall of the lower box body (2); and an actuating end of the scraping component is in sliding contact with the top of the filter plate (24).

6. A VOCs treatment device according to claim 5, characterized in that: The scraping assembly comprises a first motor (22), the first motor (22) being fixedly connected to the inner top wall of the lower box (2), the output end of the first motor (22) being fixedly connected to a scraping strip (23), the bottom end of the scraping strip (23) being in sliding contact with the top end of the filter plate (24).

7. A VOCs treatment device according to claim 1, characterized in that: The inner wall of the lower box body (2) is fixedly connected with a partition (27), and the partition (27) is located below the exhaust pipe (10). The rotary spray mechanism comprises a circulation pump (28), and the circulation pump (28) is fixedly connected to the inner bottom wall of the lower box body (2). The liquid outlet of the circulation pump (28) is rotatably connected to one end of a hollow rotating shaft (29), and the hollow rotating shaft (29) rotates through the partition (27). The other end of the hollow rotating shaft (29) is fixedly connected to the middle part of a liquid dispensing tube (30), and the bottom wall of the liquid dispensing tube (30) is fixedly connected to a plurality of atomizing nozzles (31) arranged at equal intervals. The outer wall of the hollow rotating shaft (29) is fixedly connected with a rotary drive unit, and the rotary drive unit is fixedly connected to the bottom end of the partition (27).

8. A VOCs treatment device according to claim 7, characterized in that: The rotary drive unit comprises a second motor (32), the second motor (32) is fixedly connected to the bottom end of the partition (27), the output shaft of the second motor (32) is fixedly connected to a driving gear (33), the outer wall of the hollow rotating shaft (29) is fixedly sleeved with a driven gear (34), the driven gear (34) is meshed with the driving gear (33), and the outer wall of the hollow rotating shaft (29) is also fixedly connected to a stirring blade (35).

9. A VOCs treatment device according to claim 7, characterized in that: A drain plug (36) is detachably connected to the bottom of one side wall of the lower box body (2), and a filling plug (37) is detachably connected to the other opposite side wall of the lower box body (2), wherein the filling plug (37) is located below the partition (27).

10. The VOCs treatment device according to claim 1, characterized in that: Two sealed doors (11) are hingedly connected to the side walls of the upper box body (1), and handles (12) are provided on the sealed doors (11).

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