CN215939474U - Treatment device for sulfur-containing organic waste gas in phosphorization industry - Google Patents
Treatment device for sulfur-containing organic waste gas in phosphorization industry Download PDFInfo
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Abstract
The utility model discloses a sulfur-containing organic waste gas treatment methodThe technical field relates to a treatment device for sulfur-containing organic waste gas in the phosphorus chemical industry, which comprises a flue gas cooler, an alkaline washing tower, a water washing tower, a high-voltage electric tar precipitator, a dry filter, a zeolite rotating wheel, a desorption fan, a blower, a wind mixing box and a plant hot blast stove for incineration according to the flow direction of a medium; the flue gas cooler is communicated with the cooling tower through a circulating pump to form a loop; the washing tower is communicated with the washing pump to form a loop, the top of the washing tower is fixedly provided with a demister, and a plurality of groups of demisters are assembled together to form a combined high-efficiency demister; one branch of the zeolite rotating wheel forms a loop through a desorption fan and an electric heater; one branch of the zeolite rotating wheel is communicated with the chimney through an adsorption fan, and the device is used for cooperatively treating various pollutants and removing SO in waste gas2Dust and volatile organic compounds, and solves the technical problem that organic waste gas is difficult to treat at high temperature and high humidity.
Description
Technical Field
The utility model belongs to the technical field of phosphorus chemical industry, petrochemical industry and rubber environmental protection, relates to the technical field of sulfur-containing organic waste gas treatment, and particularly relates to a device for treating sulfur-containing organic waste gas in phosphorus chemical industry.
Background
VOCs become the fifth pollutant of national key management and control, and are precursors (haze, photochemical smog and polluted air) of PM2.5 and O3, and most of the pollutants are toxic, harmful and peculiar smell gases. Therefore, various laws and policies are issued by various departments of China, provinces and cities in succession, and VOCs pollutant treatment is promoted comprehensively.
At present, the mature organic waste gas treatment technologies reach dozens of technologies, including traditional adsorption method, absorption method, combustion method and condensation method, combined technologies including adsorption-condensation recovery, adsorption concentration-heat storage combustion, low-temperature plasma technology, photocatalytic oxidation, biological method and membrane separation technology, and most of the technologies are combined technologies of the technologies. In the phosphorus chemical industry, kerosene, gas, amines and SO are produced2Dust, ammonia and other pollutants, and is accompanied by high-temperature and high-humidity characteristics. New challenges are brought to organic exhaust gas purification.
The project is similar to the situation of the Ruissen asphalt project which is successfully operated by the company, and the project is oil-containing waste gas. However, the moisture content of the dry tail gas is up to 10.5%, the temperature is up to 75-120 ℃, the dry tail gas is close to saturated high-temperature organic waste gas, and the high temperature is not favorable for the absorption, absorption and purification treatment of VOCs. At present, the industry has no mature operation performance, and therefore, a device for treating sulfur-containing organic waste gas in the phosphorization industry is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for treating sulfur-containing organic waste gas in the phosphorus chemical industry, which aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: a treatment device for sulfur-containing organic waste gas in the industrial phosphorization industry comprises a flue gas cooler, an alkaline washing tower, a water washing tower, a high-voltage electrical tar precipitator, a dry filter, a zeolite rotating wheel, a desorption fan, a blower, a wind mixing box and a plant hot blast stove for incineration according to the flow direction of a medium;
the flue gas cooler is communicated with the cooling tower through a circulating pump to form a loop;
the alkaline tower and the alkaline pump are communicated to form a loop, a demister is fixedly assembled at the top of the alkaline tower, and a plurality of groups of demisters are assembled together to form a combined efficient demister;
the washing tower is communicated with the washing pump to form a loop, the top of the washing tower is fixedly provided with a demister, and a plurality of groups of demisters are assembled together to form a combined high-efficiency demister;
one branch of the zeolite rotating wheel forms a loop through a desorption fan and an electric heater;
one branch of the zeolite rotating wheel is communicated with a chimney through an adsorption fan.
Preferably, the flue gas cooler adopts a tubular heat exchanger and a cooling tower to carry out integrated heat exchange, cooling water is pumped to the cooling tower through a circulating pump, after being cooled by evaporation in the cooling tower, the cooling liquid returns to the tail end of the tubular heat exchanger, the part inside the heat exchanger is sequentially bent to flow through a low-temperature area, a medium-temperature area and a high-temperature area, cooling by countercurrent contact with high temperature flue gas, introducing the heated water into a circulating pump to form a cooling closed cycle, cooling the high temperature flue gas to below 45 deg.C to cool and liquefy gaseous organic matter and high moisture content water vapor, the waste liquid is collected and discharged in the liquid accumulating box and then is mixed with the extraction tail gas, the problem that the high-temperature waste gas is difficult to capture and adsorb is solved, the water is directly supplemented in a high-temperature area, a bypass adjusting pipeline is arranged at the outlet of the circulating pump, circulating water in the flue gas cooler enters the heat exchanger, and enters the circulating pump in a mode that the circulating water enters the heat exchanger from top to bottom, the circulating water enters the circulating pump from bottom to top in the low-temperature area, the circulating water enters the circulating pump from bottom to top in the medium-temperature area and enters the circulating pump from top to bottom in the high-temperature area.
Preferably, the alkali washing tower absorbs SO by using alkali liquor2Washing dust and oil gas, spraying liquid-gas ratio not less than 2L/m3The demister is made of random packing, and the alkaline tower is replenished with water through an external communication pipeline and a floating ball interlocking electromagnetic valve.
Preferably, the water scrubber adopts process water to wash waste gas, traps alkali washing carried liquid drops and washes residual pollutants, the combined efficient demister selects random packing, a baffle plate demister, a ridge demister, a wire mesh demister and the like, and the water scrubber supplements water through an external communicating pipeline and a floating ball interlocking solenoid valve.
Preferably, the high-voltage electric tar precipitator is arranged at the spraying rear end of the washing tower, can precipitate oil stains and water mist, and is provided with a safety explosion-proof sheet at the top of the washing tower.
Preferably, the dry filter comprises the filter modules with different multilayer filter effects, the filter modules are of a frame and a module structure, the filter modules are fixed on the frame through bolts and clamping pieces, each layer of filter modules is provided with a quick-opening and closing access door, waste gas enters from the upper side, the upper inlet is connected with the top outlet of the high-voltage electric tar precipitator, the side outlet is directly connected with the inlet of the zeolite rotating wheel, the bottom end of the frame is provided with a collecting box, a liquid pipeline is discharged into a pit in a liquid sealing mode, a pressure gauge is installed at the inlet end and the outlet end, and when the pressure is greater than 1000pa, the filter modules need to be checked and replaced.
Preferably, the zeolite rotating wheel is a water-resistant aluminum silicate coated zeolite molecular sieve material wheel, the rotating speed of the zeolite rotating wheel is 3-4 r/h, and the hot blast stove in the plant area can be replaced by an RTO regenerative combustion furnace and a CO/RCO catalytic oxidation furnace.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model has reasonable structural design, aims at the prior treatment technology, has no application performance in the potassium dihydrogen phosphate fertilizer industry by a phosphorus chemical extraction method, and has indefinite treatment effect, and designs a combined process of (dry tail gas) flue gas cooler, an alkaline washing tower, a water washing tower, a high-voltage electric tar precipitator, a dry filter, a zeolite rotating wheel, a desorption fan, a blower, an air mixing box and plant hot blast stove burning to purify and treat the organic waste gas and eliminate the VOCs waste gas step by fully communicating with an owner to monitor and collect operation data on site, and fully analyzing each pollutant removal measure2Dust and volatile organic compounds, and solves the technical problem that organic waste gas is difficult to treat at high temperature and high humidity.
Drawings
FIG. 1 is a cooling, scrubbing and demisting system according to the present invention;
FIG. 2 is a diagram of a filtration and concentration system according to the present invention.
In the figure: 1. a flue gas cooler; 2. a cooling tower; 3. a circulation pump; 4. an alkaline washing tower; 5. an alkaline washing pump; 6. a demister; 7. washing the tower with water; 8. a water washing pump; 9. a combined high-efficiency demister; 10. a high-voltage electrical tar precipitator; 11. a dry filter; 12. a zeolite wheel; 13. an adsorption fan; 14. a chimney; 15. a desorption fan; 16. an electric heater; 17. a blower; 18. and (4) an air mixing box.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: a treatment device for sulfur-containing organic waste gas in the industrial phosphorization industry comprises a flue gas cooler 1, an alkaline washing tower 4, a water washing tower 7, a high-voltage electric tar precipitator 10, a dry filter 11, a zeolite rotating wheel 12, a desorption fan 15, a blower 17, an air mixing box 18 and a plant hot blast stove for incineration according to the flow direction of a medium;
the flue gas cooler 1 is communicated with the cooling tower 2 through a circulating pump 3 to form a loop;
the alkaline tower 4 and the alkaline pump 5 are communicated to form a loop, the top of the alkaline tower 4 is fixedly provided with a demister 6, and a plurality of groups of demisters 6 are assembled together to form a combined high-efficiency demister 9;
the water washing tower 7 and the water washing pump 8 are communicated to form a loop, the top of the water washing tower 7 is fixedly provided with the demister 6, and a plurality of groups of demisters 6 are assembled together to form a combined high-efficiency demister 9;
one branch of the zeolite rotating wheel 12 forms a loop through a desorption fan 15 and an electric heater 16;
one branch of the zeolite rotating wheel 12 is communicated with a chimney 14 through an adsorption fan 13;
according to the process concept of 'condensing and capturing heavy components and heavy components of organic waste gas and concentrating and burning the light components later', the device is provided with control measures such as safe explosion-proof alarm, ultrahigh-temperature automatic cooling, explosion-proof sheets and the like, the technology is not limited to the phosphorus chemical industry, other industries such as petrochemical industry and rubber industry can be used for organic waste gas treatment, the investment and operation cost can be reduced, the device can stably operate for a long period, various pollutants are cooperatively treated, and SO in the waste gas is removed simultaneously2Dust and volatile organic compounds, and solves the technical problem that organic waste gas is difficult to treat at high temperature and high humidity.
The flue gas cooler 1 adopts a tubular heat exchanger and a cooling tower to exchange heat in an integrated manner, cooling water is sent to the cooling tower 2 through a circulating pump 3, after being cooled by evaporation in the cooling tower 2, the cooling water returns to the tail end (low temperature end of the flue gas) of the tubular heat exchanger, the cooling water is partially and sequentially bent to flow through a low temperature region, a medium temperature region and a high temperature region in the heat exchanger and is in countercurrent contact with the high temperature flue gas for cooling, the heated water enters the circulating pump 3 to form a cooling closed loop, the high temperature flue gas is cooled to be below 45 ℃, gaseous organic matters and high moisture-containing water are cooled and liquefied, collected and discharged in a effusion box and then mixed with extraction tail gas, the problems that the high temperature waste gas is difficult to capture and adsorb are solved, water is directly supplemented in the high temperature region, a bypass adjusting pipeline is arranged at the outlet of the circulating pump 3, the circulating water in the flue gas cooler 1 enters the heat exchanger, the low temperature region adopts an upper inlet and lower outlet, and the medium temperature region is a lower inlet and an upper outlet, The high-temperature area enters a circulating pump 3 in an upper inlet and lower outlet mode;
the alkaline washing tower 4 absorbs SO by adopting alkali liquor2Washing dust and oil gas, spraying liquid-gas ratio not less than 2L/m3The demister 6 adopts random packing, and the alkaline tower 4 is supplied with water through an external communication pipeline and a floating ball interlocking electromagnetic valve;
the water washing tower 7 adopts a process water to wash waste gas, collects alkali washing carried liquid drops and washes residual pollutants, the combined efficient demister 9 adopts random packing, a baffle demister, a ridge demister, a wire mesh demister and the like, and the water washing tower 7 supplements water through an external communicating pipeline and a floating ball interlocking solenoid valve;
the high-voltage electrical tar precipitator 10 is arranged at the spraying rear end of the washing tower 7, can collect oil stains and water mist, and a safety explosion-proof sheet is arranged at the top of the washing tower 7;
the dry filter 11 is composed of a plurality of layers of filter modules with different filter effects, the filter modules are of a frame and a module structure, the filter modules are fixed on the frame through bolts and clamping pieces, each layer is provided with a quick opening and closing access door, waste gas is discharged from the upper side, the upper inlet is connected with the top outlet of the high-voltage electrical tar precipitator 10, the side outlet is directly connected with the inlet of the zeolite rotating wheel 12, the bottom end of the frame is provided with a collecting box, a liquid pipeline is discharged into a pit in a liquid sealing mode, pressure gauges are installed at the inlet end and the outlet end, and when the pressure is more than 1000pa, the filter modules need to be checked and replaced;
the zeolite rotating wheel 12 is a water-resistant aluminum silicate coated zeolite molecular sieve material wheel, the rotating speed of the zeolite rotating wheel 12 is 3-4 r/h, and the hot blast stove in a plant area can be replaced by an RTO regenerative combustion furnace and a CO/RCO catalytic oxidation furnace.
Aiming at the prior treatment technology, the device has no application performance in the potassium dihydrogen phosphate fertilizer industry by a phosphorus chemical extraction method, and has undefined treatment effect, and the combined process of (dry tail gas) flue gas cooler, alkaline washing tower, water washing tower, high-voltage electric tar precipitator, dry filter, zeolite rotating wheel, desorption fan, air feeder, air mixing box and factory hot blast stove burning is designed to purify the organic waste gas by fully communicating with an owner to monitor and collect operation data on site, and fully analyzing each pollutant removal measure, SO that the device has the advantages of clear functional section, strong pertinence, high purification rate, investment saving and the like, the device in the method has negative pressure operation structure, can effectively ensure that the waste gas is not leaked, and can collaboratively treat multiple pollutants and simultaneously remove SO in the waste gas2Dust and volatile organic compounds, and solves the technical problem that organic waste gas is difficult to treat at high temperature and high humidity.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a processing apparatus of organic waste gas of phosphorus chemical industry sulphur which characterized in that: according to the medium flow direction, the treatment device comprises a flue gas cooler (1), an alkaline washing tower (4), a water washing tower (7), a high-voltage electrical tar precipitator (10), a dry filter (11), a zeolite rotating wheel (12), a desorption fan (15), a blower (17), a wind mixing box (18) and a factory hot blast stove for incineration;
the flue gas cooler (1) is communicated with the cooling tower (2) through a circulating pump (3) to form a loop;
the alkaline tower (4) is communicated with an alkaline washing pump (5) to form a loop, a demister (6) is fixedly assembled at the top of the alkaline tower (4), and a plurality of groups of demisters (6) are assembled together to form a combined efficient demister (9);
the washing tower (7) is communicated with the washing pump (8) to form a loop, the top of the washing tower (7) is fixedly provided with a demister (6), and a plurality of groups of demisters (6) are assembled together to form a combined efficient demister (9);
one branch of the zeolite rotating wheel (12) forms a loop through a desorption fan (15) and an electric heater (16);
one branch of the zeolite rotating wheel (12) is communicated with a chimney (14) through an adsorption fan (13).
2. The device for treating the sulfur-containing organic waste gas in the phosphorus chemical industry according to claim 1, wherein: the flue gas cooler (1) adopts a tubular heat exchanger and a cooling tower to realize integrated heat exchange, cooling water is conveyed to the cooling tower (2) through a circulating pump (3), after being cooled through evaporation cooling in the cooling tower (2), the cooling water returns to the tail end of the tubular heat exchanger, the inside of the heat exchanger is sequentially bent to flow through a low temperature region, a medium temperature region and a high temperature region, and is in countercurrent contact with high temperature flue gas for cooling, heated water enters the circulating pump (3) to form a cooling closed loop, the high temperature flue gas is cooled to a temperature below 45 ℃, gaseous organic matters and high moisture-containing water vapor are cooled and liquefied, the liquefied gas organic matters and the high moisture-containing water vapor are collected and discharged in a liquid accumulating box and then are mixed with extraction tail gas, the problem that the high temperature waste gas is difficult to capture and adsorb is solved, water is directly supplemented in the high temperature region, a bypass adjusting pipeline is arranged at the outlet of the circulating pump (3), the circulating water in the flue gas cooler (1) enters the heat exchanger, and the low temperature region is discharged from top to bottom, The medium temperature zone enters the circulating pump (3) in a mode of entering from the bottom and exiting from the top, and the high temperature zone enters from the top and exits from the bottom.
3. The device for treating the sulfur-containing organic waste gas in the phosphorus chemical industry according to claim 1, wherein: the alkaline washing tower (4) absorbs SO by adopting alkali liquor2Washing dust and oil gas, spraying liquid-gas ratio not less than 2L/m3The demister (6) is made of random packing, and the alkaline tower (4) is supplemented with water through an external communication pipeline and a floating ball interlocking electromagnetic valve.
4. The device for treating the sulfur-containing organic waste gas in the phosphorus chemical industry according to claim 1, wherein: the water washing tower (7) is used for washing waste gas by adopting process water, collecting alkali washing carried liquid drops and washing residual pollutants, the combined efficient demister (9) is a random packing, a baffle plate demister, a ridge demister and a wire mesh demister, and the water washing tower (7) is supplemented with water by an external communicating pipeline and a floating ball interlocking solenoid valve.
5. The device for treating the sulfur-containing organic waste gas in the phosphorus chemical industry according to claim 4, wherein: the high-voltage electrical tar precipitator (10) is arranged at the spraying rear end of the washing tower (7), can precipitate oil stains and water mist, and a safety explosion-proof sheet is arranged at the top of the washing tower (7).
6. The device for treating the sulfur-containing organic waste gas in the phosphorus chemical industry according to claim 1, wherein: the dry filter (11) is composed of a plurality of layers of filter modules with different filter effects, each filter module is of a frame and a module structure, each filter module is fixed on the frame through bolts and clamping pieces, each layer of filter modules is provided with a quick opening and closing access door, waste gas is discharged from the upper side of the filter modules, the upper inlet of the filter modules is connected with the top outlet of the high-voltage electric tar precipitator (10), the side outlet of the filter modules is directly connected with the inlet of the zeolite rotating wheel (12), the bottom end of the frame is provided with a collecting box, a liquid pipeline is discharged into a pit in a liquid sealing mode, pressure meters are installed at the inlet end and the outlet end, and when the pressure is greater than 1000pa, the filter modules are required to be checked and replaced.
7. The device for treating the sulfur-containing organic waste gas in the phosphorus chemical industry according to claim 1, wherein: the zeolite rotating wheel (12) is a water-resistant aluminum silicate coated zeolite molecular sieve material wheel, the rotating speed of the zeolite rotating wheel (12) is 3-4 r/h, and the hot blast stove in the plant area can be replaced by an RTO heat storage combustion furnace and a CO/RCO catalytic oxidation furnace.
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| CN202121623358.1U CN215939474U (en) | 2021-07-16 | 2021-07-16 | Treatment device for sulfur-containing organic waste gas in phosphorization industry |
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| CN202121623358.1U CN215939474U (en) | 2021-07-16 | 2021-07-16 | Treatment device for sulfur-containing organic waste gas in phosphorization industry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114748999A (en) * | 2022-05-07 | 2022-07-15 | 富滇环保科技股份有限公司 | Device and method for treating malodorous gas produced by gel in natural rubber industry |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114748999A (en) * | 2022-05-07 | 2022-07-15 | 富滇环保科技股份有限公司 | Device and method for treating malodorous gas produced by gel in natural rubber industry |
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