CN214437892U - Flue gas purification device of hazardous waste incineration disposal system - Google Patents
Flue gas purification device of hazardous waste incineration disposal system Download PDFInfo
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- CN214437892U CN214437892U CN202120204545.XU CN202120204545U CN214437892U CN 214437892 U CN214437892 U CN 214437892U CN 202120204545 U CN202120204545 U CN 202120204545U CN 214437892 U CN214437892 U CN 214437892U
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Abstract
The utility model provides a flue gas purification device of a hazardous waste incineration disposal system, belonging to the technical field of industrial waste gas treatment and purification; including the purifying column, the purifying column bottom is equipped with the centrifugal pump, the centrifugal pump is connected with the spray header, the purifying column lower part is equipped with the intake pipe, the intake pipe lower part is equipped with the gas outlet, inside filler device one and the filler device two of being equipped with of purifying column, filler device one lower part is equipped with fixed grid tray one, the filler layer has been placed on fixed grid tray one upper portion, filler layer upper portion is equipped with fixed grid tray two, the structure of filler device two is the same with filler device one, the purifying column middle part is equipped with moisturizing pipe and sodium hydroxide pipe, the purifying column top is equipped with the outlet duct, outlet duct one end is connected with shell and tube heat exchanger, the shell and tube heat exchanger other end is connected with the chimney pipe, the chimney pipe is equipped with the fan. The utility model discloses a filler dust collector to introduced circulation cooling system, flue gas purification is effectual, and reacts into inorganic salt with sulfur dioxide and nitrogen oxide, easily processing on next step, low cost.
Description
Technical Field
The utility model provides a hazardous waste burns processing system gas cleaning device belongs to industrial waste gas treatment and purifies technical field.
Background
According to the regulations of the national State of the people's republic of China for preventing and treating the solid waste from polluting the environment, the hazardous waste refers to the solid waste with hazardous characteristics listed in the national records of hazardous waste or identified according to the national regulated hazardous waste identification standard and identification method. According to the definition of the national list of hazardous wastes, solid wastes and liquid wastes having one of the following conditions are included in the list: has one or more dangerous characteristics of corrosivity, toxicity, inflammability, reactivity or infectivity and the like; dangerous characteristics are not excluded, and may have harmful effects on the environment or human health, which need to be managed according to dangerous wastes. Hazard of hazardous waste: the ecological environment is destroyed, and the hazardous waste which is randomly discharged and stored pollutes water and soil under the long-term permeation and diffusion effects of rainwater and groundwater, so that the environmental function level of the area is reduced; the health of human beings is influenced, hazardous wastes are poisoned by ingestion, inhalation, skin absorption and eye contact, or dangerous events such as combustion and explosion are caused, and long-term hazards comprise long-term poisoning, carcinogenesis, teratogenesis and the like caused by repeated contact; the pollution of atmosphere, water source, soil and the like caused by the non-treatment or non-standard treatment of hazardous wastes can also become a bottleneck restricting economic activities. With the development of scientific technology, the treatment methods of hazardous wastes are gradually increased, including physical treatment, solidification treatment, incineration treatment, landfill treatment and other manners, the most common method with the best treatment effect is incineration treatment, but the flue gas generated by incineration contains sulfur dioxide, nitrogen oxides and smoke dust which cause great pollution to the environment and needs to be treated and discharged after reaching the standard, the flue gas treated by the prior art mostly adopts cloth bag dust removal and activated carbon adsorption, but the cloth bag and the activated carbon in the prior art have large loss and higher cost, the activated carbon has the risk of spontaneous combustion at a temperature of more than 30 ℃, and the flue gas generated by incineration has higher temperature and certain danger.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hazardous waste burns processing system gas cleaning device adopts filler dust collector to introduced circulation cooling system, the gas cleaning is effectual, and reacts into inorganic salt with sulfur dioxide and nitrogen oxide, easily handles on next step, low cost.
The utility model provides a hazardous waste burns processing system gas cleaning device, its characterized in that: the purification tower comprises a purification tower, wherein a blow-off pipe and a pump inlet pipe are arranged at the bottom of the purification tower, the blow-off pipe is provided with a blow-off valve, the pump inlet pipe is provided with a pump inlet valve and a filter, the tail end of the pump inlet pipe is connected with a centrifugal pump, the pump inlet pipe is connected with the inlet of the centrifugal pump, the outlet of the centrifugal pump is connected with a main spray pipe, the main spray pipe is provided with a main spray valve, the main spray pipe is connected with a first spray branch pipe and a second spray branch pipe, the first spray branch pipe penetrates through the middle part of the purification tower and extends into the purification tower, the first spray branch pipe is positioned inside the purification tower and is provided with a first spray head, the second spray branch pipe penetrates through the upper part of the purification tower and extends into the purification tower, the second spray branch pipe is positioned inside the purification tower and is provided with a second spray head, the lower part of the purification tower is provided with an air inlet pipe, the air inlet pipe penetrates through the purification tower and extends into the purification tower, the tail end of the air inlet pipe is closed, the purifying tower is characterized in that a fixed block is arranged on the inner wall of the purifying tower, the tail end of the air inlet pipe is connected with the purifying tower through the fixed block, an air outlet is formed in the lower portion of the air inlet pipe, a first filler device and a second filler device are arranged in the purifying tower, a first fixed grid plate is arranged on the lower portion of the first filler device, a filler layer is arranged on the upper portion of the first fixed grid plate, a second fixed grid plate is arranged on the upper portion of the filler layer, the first fixed grid plate and the second fixed grid plate are both fixedly connected with the inner wall of the purifying tower, the second filler device is identical to the first filler device in structure, a water replenishing pipe and a sodium hydroxide pipe are arranged in the middle of the purifying tower, an air outlet pipe is arranged at the top of the purifying tower, one end of the air outlet pipe is connected with a tubular heat exchanger, the air outlet pipe is connected with a tubular heat exchanger tube pass, the other end of the tubular heat exchanger tube pass is connected with a chimney pipe, the lower portion of the tubular heat exchanger is connected with a water return pipe, and a cooling water inlet pipe and a cooling water return pipe are connected with a shell pass of the tubular heat exchanger, the chimney pipe is provided with a fan.
The first spray branch pipe is positioned between the first filling device and the second filling device, and the second spray branch pipe is positioned at the upper part of the second filling device.
And the water replenishing pipe and the sodium hydroxide pipe are positioned between the first spraying branch pipe and the first filling device.
The lower part of the purification tower is provided with a thermometer, the lower part of the purification tower is provided with a liquid level meter, and the pump inlet pipe is provided with a PH meter.
The bottom of the purification tower is provided with a skirt.
The cooling water inlet pipe is provided with a cooling water inlet valve, and the cooling water return pipe is provided with a cooling water return valve.
The air inlet pipe is provided with an air inlet valve, the water supplementing pipe is provided with a water supplementing valve, the sodium hydroxide pipe is provided with a sodium hydroxide valve, the water return pipe is provided with a water return valve, the first spraying branch pipe is provided with a first spraying valve, and the second spraying branch pipe is provided with a second spraying valve.
The first fixed grid plate is provided with vertically staggered fixing rods, the fixing rods are of an integrated fixed connection structure, and the second fixed grid plate structure is the same as the first fixed grid plate.
The principle of the utility model is as follows:
and (3) filler dedusting: the structured packing is composed of a plurality of corrugated sheets which are mutually and parallelly superposed. The liquid is sprayed on the packing from the top of the tower through a liquid distributor and flows down along the surface of the packing. The gas is fed from the bottom of the tower, distributed by a gas distribution device (the small-diameter tower is not provided with the gas distribution device generally), and continuously passes through the gap of the packing layer in a countercurrent manner with the liquid, and the gas phase and the liquid phase are closely contacted on the surface of the packing for mass transfer. The packed tower belongs to continuous contact type gas-liquid mass transfer equipment, the composition of two phases continuously changes along the height of the tower, under the normal operation state, a gas phase is a continuous phase, a liquid phase is a dispersed phase, the gas phase and the liquid phase irregularly move in the packing, the contact area is increased, and dust in flue gas is easily absorbed by liquid.
The reaction mechanism of sodium hydroxide and nitrogen oxides is as follows: 2NO2+2NaOH＝NaNO3+NaNO2+H2O
NO+NO2+2NaOH＝2NaNO3+H2O
The reaction mechanism of sodium hydroxide and sulfur dioxide is as follows: SO (SO)2+2NaOH＝Na2SO3+H2O
Before use, a water supplementing valve and a sodium hydroxide valve are opened to supplement liquid level to a purification tower according to a certain proportion, a PH meter is used for displaying and adjusting the proportion to enable the solution to reach a certain PH value, a certain amount of liquid level is supplemented through the liquidometer, a cooling water inlet valve and a cooling water return valve are opened to use a tubular heat exchanger, a pump inlet valve is opened, a first spray valve and a second spray valve are opened, a centrifugal pump is started, a main spray valve is slowly opened, the purification tower is circularly sprayed, an air inlet valve is opened, smoke is introduced into the purification tower, a fan is started, dust particles in the smoke pass through a first filling device, the dust particles in the smoke are fully contacted with spray liquid flowing down from the upper part of the first filling device to be absorbed, nitric oxide and sulfur dioxide in the smoke react with the solution to generate inorganic salt which is easy to dissolve in water, the inorganic salt flows down to the bottom of the purification tower, the smoke continues to rise and continues to be contacted with a second filling device where the solution is redistributed, further reaction and absorption, the flue gas flows through the filler device and flows into the bottom of the purification tower, the flue gas continuously rises and enters the tubular heat exchanger through the gas outlet pipe, at the moment, gasified water and a small amount of dust are generated in the flue gas due to higher temperature, the flue gas which is qualified after being purified is discharged to the atmosphere through a chimney pipe, the thermometer displays the temperature in the purification tower, when the temperature is too high, the blowoff valve and the water replenishing valve are opened to replace the solution in the tower, the PH meter displays the PH value in the tower, when the PH value is too low, open the sodium hydroxide valve and supply sodium hydroxide solution, the effect of skirt is fixed purifying column, and the fan effect improves flue gas absorption efficiency, prevents to burn the too high effect of burning of flue gas content in the device, and the filter effect prevents that the solid particle in the solution from getting into the centrifugal pump and influencing the centrifugal pump operation.
The utility model has the advantages that:
the utility model provides a hazardous waste burns processing system gas cleaning device adopts filler dust collector to introduced circulation cooling system, the gas cleaning is effectual, and reacts into inorganic salt with sulfur dioxide and nitrogen oxide, easily handles on next step, low cost.
Drawings
FIG. 1 is a schematic structural diagram of a flue gas purification device of a hazardous waste incineration disposal system of the present invention.
Fig. 2 is the utility model relates to a hazardous waste burns processing system gas cleaning device's a fixed grid plate schematic structure.
(1, a purification tower, 2, a blow-off pipe, 3, a pump inlet pipe, 4, a blow-off valve, 5, a pump inlet valve, 6, a filter, 7, a centrifugal pump, 8, a spray main pipe, 9, a spray main valve, 10, a spray branch pipe I, 11, a spray branch pipe II, 12, a spray head I, 13, a spray head II, 14, an air inlet pipe, 15, a fixed block, 16, an air outlet, 17, a filler device I, 18, a filler device II, 19, a fixed grid plate I, 20, a filler layer, 21, a fixed grid plate II, 22, a water replenishing pipe, 23, a sodium hydroxide pipe, 24, an air outlet pipe, 25, a column pipe heat exchanger, 26, a chimney pipe, 27, a water returning pipe, 28, a cooling water inlet pipe, 29, a cooling water returning pipe, 30, a fan, 31, a thermometer, 32, a liquid level meter, 33, a PH meter, 34, a skirt, 35, a cooling water inlet valve, 36, a cooling water returning valve, 37, an air inlet valve, 38, a water replenishing valve, 39, a sodium hydroxide valve, 40. a water return valve 41, a first spray valve 42, a second spray valve 43 and a fixed rod)
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
The utility model provides a hazardous waste burns processing system gas cleaning device, its characterized in that: the purification device comprises a purification tower 1, wherein a sewage discharge pipe 2 and a pump inlet pipe 3 are arranged at the bottom of the purification tower 1, the sewage discharge pipe 2 is provided with a sewage discharge valve 4, the pump inlet pipe 3 is provided with a pump inlet valve 5 and a filter 6, the tail end of the pump inlet pipe 3 is connected with a centrifugal pump 7, the pump inlet pipe 3 is connected with the inlet of the centrifugal pump 7, the outlet of the centrifugal pump 7 is connected with a main spray pipe 8, the main spray pipe 8 is provided with a main spray valve 9, the main spray pipe 8 is connected with a first spray branch pipe 10 and a second spray branch pipe 11, the first spray branch pipe 10 penetrates through the middle part of the purification tower 1 and extends into the purification tower 1, the first spray branch pipe 10 is positioned inside the purification tower 1 and is provided with a first spray head 12, the second spray branch pipe 11 penetrates through the upper part of the purification tower 1 and extends into the purification tower 1, the second spray head 13 is positioned inside the purification tower 1, and an air inlet pipe 14 is arranged at the lower part of the purification tower 1, the air inlet pipe 14 penetrates through the purification tower 1 and extends into the purification tower 1, the tail end of the air inlet pipe 14 is sealed, a fixing block 15 is arranged on the inner wall of the purification tower 1, the tail end of the air inlet pipe 14 is connected with the purification tower 1 through the fixing block 15, an air outlet 16 is arranged at the lower part of the air inlet pipe 14, a first packing device 17 and a second packing device 18 are arranged in the purification tower 1, a first fixing grid plate 19 is arranged at the lower part of the first packing device 17, a packing layer 20 is placed on the upper part of the first fixing grid plate 19, a second fixing grid plate 21 is arranged at the upper part of the packing layer 20, the first fixing grid plate 19 and the second fixing grid plate 21 are both fixedly connected with the inner wall of the purification tower 1, the structure of the second packing device 18 is the same as that of the first packing device 17, a water replenishing pipe 22 and a sodium hydroxide pipe 23 are arranged in the middle part of the purification tower 1, an air outlet pipe 24 is arranged at the top of the purification tower 1, one end of the air outlet pipe 24 is connected with a pipe heat exchanger 25, the air outlet pipe 24 is connected with a tube pass of the tube heat exchanger 25, the other end of the tube pass of the tube heat exchanger 25 is connected with a chimney 26, the lower part of the tube heat exchanger 25 is connected with a water return pipe 27, the shell pass of the tube heat exchanger 25 is connected with a cooling water inlet pipe 28 and a cooling water return pipe 29, and the chimney 26 is provided with a fan 30.
The first spray branch pipe 10 is located between the first filling device 17 and the second filling device 18, and the second spray branch pipe 11 is located at the upper part of the second filling device 18.
And the water replenishing pipe 22 and the sodium hydroxide pipe 23 are positioned between the first spray branch pipe 10 and the first filling device 17.
The lower part of the purification tower 1 is provided with a thermometer 31, the lower part of the purification tower 1 is provided with a liquid level meter 32, and the pump inlet pipe 3 is provided with a PH meter 33.
The bottom of the purification tower 1 is provided with a skirt 34.
The cooling water inlet pipe 28 is provided with a cooling water inlet valve 35, and the cooling water return pipe 29 is provided with a cooling water return valve 36.
The air inlet pipe 14 is provided with an air inlet valve 37, the water supplementing pipe 22 is provided with a water supplementing valve 38, the sodium hydroxide pipe 23 is provided with a sodium hydroxide valve 39, the water returning pipe 27 is provided with a water returning valve 40, the first spraying branch pipe 10 is provided with a first spraying valve 41, and the second spraying branch pipe 11 is provided with a second spraying valve 42.
The first fixed grid plate 19 is provided with fixing rods 43 which are vertically staggered, the fixing rods 43 are of an integrated fixed connection structure, and the structure of the second fixed grid plate 21 is the same as that of the first fixed grid plate 19.
According to fig. 1 and 2: and (3) filler dedusting: the structured packing is composed of a plurality of corrugated sheets which are mutually and parallelly superposed. The liquid is sprayed on the packing from the top of the tower through a liquid distributor and flows down along the surface of the packing. The gas is fed from the bottom of the tower, distributed by a gas distribution device (the small-diameter tower is not provided with the gas distribution device generally), and continuously passes through the gap of the packing layer in a countercurrent manner with the liquid, and the gas phase and the liquid phase are closely contacted on the surface of the packing for mass transfer. The packed tower belongs to continuous contact type gas-liquid mass transfer equipment, the composition of two phases continuously changes along the height of the tower, under the normal operation state, a gas phase is a continuous phase, a liquid phase is a dispersed phase, the gas phase and the liquid phase irregularly move in the packing, the contact area is increased, and dust in flue gas is easily absorbed by liquid.
The reaction mechanism of sodium hydroxide and nitrogen oxides is as follows: 2NO2+2NaOH＝NaNO3+NaNO2+H2O
NO+NO2+2NaOH＝2NaNO3+H2O
The reaction mechanism of sodium hydroxide and sulfur dioxide is as follows: SO (SO)2+2NaOH＝Na2SO3+H2O
Before use, a water replenishing valve 38 and a sodium hydroxide valve 39 are opened to replenish liquid level to the purification tower 1 according to a certain proportion, a PH meter 33 displays and adjusts the proportion to enable the solution to reach a certain PH value, a certain amount of liquid level is replenished through a liquid level meter 32, a cooling water inlet valve 35 and a cooling water return valve 36 are opened to put in use a tubular heat exchanger 25, a pump inlet valve 5 is opened, a first spray valve 41 and a second spray valve 42 are opened, a centrifugal pump 7 is started, a main spray valve 9 is opened slowly, the purification tower 1 is sprayed circularly, an air inlet valve 37 is opened, flue gas is introduced into the purification tower 1, a fan 30 is started, the flue gas passes through a first filling device 17, dust particles in the flue gas are fully contacted with spray liquid flowing down from the upper part of the first filling device 17 to be absorbed, nitric oxide and sulfur dioxide in the flue gas react with the solution to generate inorganic salt which is easy to dissolve in water, the flue gas flows downwards into the bottom of the purification tower 1, and the flue gas continuously rises, the flue gas continuously contacts with the second filling device 18 with the redistributed solution for further reaction and absorption, flows through the first filling device 17 and flows into the bottom of the purification tower 1, the flue gas continuously rises through the air outlet pipe 24 and enters the tubular heat exchanger 25, at the moment, gasified water and a small amount of dust generated due to higher temperature in the flue gas are cooled into liquid water through the tubular heat exchanger 25 to further absorb the dust, the water return valve 40 is opened to return condensed water to the purification tower 1 to play a role of cooling the purification tower 1, the qualified purified flue gas is discharged to the atmosphere through the chimney pipe 26, the thermometer 31 displays the temperature in the purification tower 1, the blow-down valve 4 and the water replenishing valve 38 are opened to replace the solution in the tower when the temperature is too high, the PH meter 33 displays the PH value in the tower, the sodium hydroxide valve 39 is opened to replenish the sodium hydroxide solution when the PH value is too low, the skirt base 34 is used for fixing the purification tower 1, and the fan 30 is used for improving the flue gas absorption efficiency, the effect of burning is influenced to the too high flue gas content in preventing burning device, and filter 6 effect prevents that the solid particle in the solution from getting into centrifugal pump 7 and influencing centrifugal pump 7 operation.
The utility model discloses a filler dust collector to introduced circulation cooling system, flue gas purification is effectual, and reacts into inorganic salt with sulfur dioxide and nitrogen oxide, easily processing on next step, low cost.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a hazardous waste burns processing system gas cleaning device which characterized in that: comprises a purification tower (1), wherein a blow-off pipe (2) and a pump inlet pipe (3) are arranged at the bottom of the purification tower (1), the blow-off pipe (2) is provided with a blow-off valve (4), the pump inlet pipe (3) is provided with a pump inlet valve (5) and a filter (6), the tail end of the pump inlet pipe (3) is connected with a centrifugal pump (7), the pump inlet pipe (3) is connected with the inlet of the centrifugal pump (7), the outlet of the centrifugal pump (7) is connected with a spray header pipe (8), the spray header pipe (8) is provided with a spray header valve (9), the spray header pipe (8) is connected with a first spray branch pipe (10) and a second spray branch pipe (11), the first spray branch pipe (10) passes through the middle part of the purification tower (1) and extends to the inside of the purification tower (1), the first spray branch pipe (10) is positioned inside the purification tower (1) and is provided with a first spray head (12), and the second spray branch pipe (11) passes through the upper part of the purification tower (1) and extends to the inside of the purification tower (1), the spray branch pipe II (11) is positioned in the purification tower (1) and is provided with a spray head II (13), the lower part of the purification tower (1) is provided with an air inlet pipe (14), the air inlet pipe (14) penetrates through the purification tower (1) and extends into the purification tower (1), the tail end of the air inlet pipe (14) is sealed, the inner wall of the purification tower (1) is provided with a fixed block (15), the tail end of the air inlet pipe (14) is connected with the purification tower (1) through the fixed block (15), the lower part of the air inlet pipe (14) is provided with an air outlet (16), the purification tower (1) is internally provided with a first packing device (17) and a second packing device (18), the lower part of the first packing device (17) is provided with a first fixed grid plate (19), the upper part of the first fixed grid plate (19) is provided with a packing layer (20), the upper part of the packing layer (20) is provided with a second fixed grid plate (21), and both the first fixed grid plate (19) and the second fixed grid plate (21) are fixedly connected with the inner wall of the purification tower (1), the structure of filler device two (18) is the same as filler device one (17), purification tower (1) middle part is equipped with moisturizing pipe (22) and sodium hydroxide pipe (23), purification tower (1) top is equipped with outlet duct (24), outlet duct (24) one end is connected with shell and tube heat exchanger (25), shell and tube heat exchanger (25) tube side is connected in outlet duct (24), shell and tube heat exchanger (25) tube side other end is connected with chimney (26), shell and tube heat exchanger (25) sub-unit connection has wet return (27), shell and tube heat exchanger (25) shell side is connected with cooling inlet tube (28) and cooling wet return (29), chimney (26) are equipped with fan (30).
2. The flue gas purification device of a hazardous waste incineration disposal system according to claim 1, wherein: the first spray branch pipe (10) is positioned between the first filling device (17) and the second filling device (18), and the second spray branch pipe (11) is positioned at the upper part of the second filling device (18).
3. The flue gas purification device of a hazardous waste incineration disposal system according to claim 1, wherein: and the water replenishing pipe (22) and the sodium hydroxide pipe (23) are positioned between the first spray branch pipe (10) and the first filling device (17).
4. The flue gas purification device of a hazardous waste incineration disposal system according to claim 1, wherein: the purification tower is characterized in that a thermometer (31) is arranged on the lower portion of the purification tower (1), a liquid level meter (32) is arranged on the lower portion of the purification tower (1), and a pH meter (33) is arranged on the pump inlet pipe (3).
5. The flue gas purification device of a hazardous waste incineration disposal system according to claim 1, wherein: the bottom of the purification tower (1) is provided with a skirt (34).
6. The flue gas purification device of a hazardous waste incineration disposal system according to claim 1, wherein: the cooling water inlet pipe (28) is provided with a cooling water inlet valve (35), and the cooling water return pipe (29) is provided with a cooling water return valve (36).
7. The flue gas purification device of a hazardous waste incineration disposal system according to claim 1, wherein: intake pipe (14) are equipped with admission valve (37), moisturizing pipe (22) are equipped with water supplementing valve (38), sodium hydroxide pipe (23) are equipped with sodium hydroxide valve (39), wet return (27) are equipped with return valve (40), spray branch pipe (10) are equipped with spray valve (41), spray branch pipe two (11) are equipped with spray valve two (42).
8. The flue gas purification device of a hazardous waste incineration disposal system according to claim 1, wherein: the first fixed grid plate (19) is provided with fixing rods (43) which are vertically staggered, the fixing rods (43) are of an integrated fixed connection structure, and the second fixed grid plate (21) is of the same structure as the first fixed grid plate (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120204545.XU CN214437892U (en) | 2021-01-26 | 2021-01-26 | Flue gas purification device of hazardous waste incineration disposal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120204545.XU CN214437892U (en) | 2021-01-26 | 2021-01-26 | Flue gas purification device of hazardous waste incineration disposal system |
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| Publication Number | Publication Date |
|---|---|
| CN214437892U true CN214437892U (en) | 2021-10-22 |
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| CN202120204545.XU Active CN214437892U (en) | 2021-01-26 | 2021-01-26 | Flue gas purification device of hazardous waste incineration disposal system |
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| Country | Link |
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| CN (1) | CN214437892U (en) |
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2021
- 2021-01-26 CN CN202120204545.XU patent/CN214437892U/en active Active
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