CN216131927U - Waste incineration equipment for decomposing dioxin by using catalyst - Google Patents
Waste incineration equipment for decomposing dioxin by using catalyst Download PDFInfo
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- CN216131927U CN216131927U CN202121827919.XU CN202121827919U CN216131927U CN 216131927 U CN216131927 U CN 216131927U CN 202121827919 U CN202121827919 U CN 202121827919U CN 216131927 U CN216131927 U CN 216131927U
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Abstract
The present invention relates to a waste incineration apparatus for decomposing dioxin with a catalyst, the apparatus comprising: the system comprises a temperature automatic control device, an air quantity automatic control device, a pressure alarm device, a feeding device, an incinerator, a blower, a draught fan, a garbage dryer, a dust remover, a clinker box, a catalytic fixed bed, an alkali liquor spray tower, an alkali liquor circulating pump, an activated carbon adsorption box, a chimney and an automatic control screen; the utility model can reduce the concentration of dioxin in the flue gas to be lower than the national standard of 0.1ngTEQ/m3The device belongs to industrially known devices, has the advantages of automatic control, reliable operation, mature technology, simple structure, convenient maintenance and low cost, can carry out large-scale harmless and reduction treatment on the garbage, and has good application prospect and industrial practicability.
Description
Technical Field
The utility model relates to a garbage incineration device, in particular to a garbage incineration device for decomposing dioxin in smoke by adopting a catalyst, and belongs to the field of environment-friendly devices.
Background
The domestic garbage and the organic waste inevitably generate dioxin harmful gas substances in the incineration; dioxin belongs to chloro tricyclic aromatic compounds, is a general name of polychlorinated dibenzodioxin (PCDD) and chlorinated dibenzofuran (PCDF), and is a mixture consisting of more than 200 isomers, homologs and the like; dioxin is very toxic, is a first-grade carcinogenic and teratogenic substance and has great harm to human bodies; dioxin is a main pollutant and toxic substance generated in waste incineration; the garbage incineration widely adopts a 3T + E technology to control the generation of dioxin (PCDD/F) in a hearth, and the 3T + E technology can only reduce the generation of dioxin due to the diversity of garbage raw materials in China and the nonuniformity of incineration temperature in the hearth; at present, dioxin is removed by a bag-type dust collector and activated carbon, the activated carbon adsorbing the dioxin and dust is also called household garbage incineration fly ash, belongs to HW18 hazardous wastes in national hazardous waste records, and has great harm to the environment and human health; the process flow for decomposing dioxin at high temperature by using 3T + E or treating dioxin by adopting activated carbon adsorption is long, the treatment equipment is complex, the cost is high, and the comprehensive operation cost of garbage treatment is greatly increased;
the prior art has disclosed some solutions to this problem, such as: the applicant of the utility model discloses that the domestic garbage is treated by adopting a dry distillation mode of a non-incineration method under the anaerobic condition in authorized USP6,133,491 method and equipment for preparing hydrocarbons from the domestic garbage and/or organic wastes, in authorized ZL200710130127.5 method for continuously treating the domestic garbage and in authorized ZL98117823.5 method and equipment for preparing hydrocarbons from the domestic garbage and/or the organic wastes, and the method has the advantage of no generation of dioxin, and has the following problems: the device belongs to an indirect heating mode of garbage, the heat transfer effect of indirect heating is poor, the energy consumption of garbage dry distillation is high, the garbage can be completely decomposed only by heating the dry distillation device by additional supplementary fuel, and the energy consumption and the operation cost of garbage treatment are greatly increased.
Disclosure of Invention
The utility model aims to make up for the deficiency of the prior art and provides a garbage incineration device which can thoroughly decompose dioxin in flue gas into carbon dioxide, water and hydrogen chloride under the action of a dioxin decomposition catalyst in a fixed bed and then remove the hydrogen chloride through an alkali liquor spray tower.
The present invention is realized in such a manner that a waste incineration apparatus for decomposing dioxin using a catalyst includes: the system comprises a temperature automatic control device, an air quantity automatic control device, a pressure alarm device, a feeding device, an incinerator, a blower, a draught fan, a garbage dryer, a dust remover, a clinker box, a catalytic fixed bed, an alkali liquor spray tower, an alkali liquor circulating pump, an activated carbon adsorption box, a chimney and an automatic control screen; wherein, a temperature self-control device (14), a pressure alarm device (12) and an air volume self-control device (11) are arranged in the automatic control screen (13); the temperature automatic control device (14) is connected with a temperature sensor (10) arranged in the incinerator (3) through a conducting wire; the pressure alarm device (12) is connected with a pressure sensor (6) arranged in the incinerator (3) through a conducting wire; the air volume self-control device (11) is connected with an electric wire of the blower (4) through a conducting wire; the temperature automatic control device (14) is connected with the air volume automatic control device (11) through a conducting wire; the feeding device (1) is arranged above a feeding hole (2) of the incinerator (3) and communicated with the feeding hole (2) of the incinerator, the outlet of the blower (4) is communicated with an air inlet chamber (41) at the lower part of the incinerator (3) through a pipeline, the air inlet chamber (41) at the bottom of the incinerator (3) is communicated with a feeding hole of a clinker box (9) through a clinker door valve (40), the flue gas outlet (5) of the incinerator is communicated with a gas inlet (36) of the catalytic fixed bed through a flue gas pipe, the gas outlet (31) of the catalytic fixed bed is communicated with a flue gas inlet (30) of the garbage dryer (37) through a flue pipe, and a dry garbage discharging port (38) of the garbage dryer (37) is communicated with a feeding bin of the feeding device (1) through a conventional material conveying device (15); garbage drying machine (37) exhanst gas outlet (39) are through air inlet (25) UNICOM of pipeline and alkali lye spray tower (28), garbage drying machine (37) upper portion steam outlet (42) are through steam pipe and alkali lye spray tower (28) lower part lateral wall steam inlet (43) UNICOM, gas vent (29) of alkali lye spray tower (28) are through pipeline and dust remover air inlet (23) UNICOM, dust remover gas outlet (21) are through pipeline and activated carbon adsorption case import (17) UNICOM, dispose honeycomb activated carbon (18) in activated carbon adsorption case (19), the gas vent of activated carbon adsorption case (19) is through pipeline and draught fan (20) import UNICOM, draught fan (20) export is through flue gas pipe and chimney (16) import UNICOM.
The feeding device (1) is a bucket type shell provided with a cover plate (44), the cover plate (44) is arranged on the bucket type shell, a control device (45) for opening or closing the cover plate (44) is arranged on the cover plate (44), and a button on the control device (45) is started to open or close the cover plate (44); the control device (45) can select a pneumatic hydraulic pump and belongs to a pneumatic hydraulic device;
the incinerator (3) is a vertical garbage incinerator, a grate furnace garbage incinerator or a fluidized bed garbage incinerator;
the catalytic fixed bed (35) belongs to a gas-solid catalytic reaction device, and comprises a cylindrical or square shell, wherein a catalytic fixed bed gas inlet (36) and a catalytic fixed bed gas outlet (31) are arranged on the shell, a sieve plate (32) is arranged in the shell, a granular or honeycomb-shaped dioxin decomposition catalyst (33) is placed on the sieve plate (32), flue gas passes through the catalytic fixed bed gas inlet (36) and passes through the granular or honeycomb-shaped dioxin decomposition catalyst (33) to generate catalytic reaction, and gas after the catalytic reaction is discharged through the catalytic fixed bed gas outlet (31).
The alkali liquor spray tower (28) belongs to an alkali liquor spray device for purifying flue gas, wherein alkali liquor is caustic soda solution and lime milk, an outlet of an alkali liquor circulating pump (24) is communicated with an inlet of a sprayer (27) at the middle upper part in the alkali liquor spray tower (28) through a water pipe (26), a sieve plate and a filler which are separated by gas and water are arranged at the upper part in the alkali liquor spray tower (28), and an exhaust port (29) is arranged at the top of the alkali liquor spray tower (28).
The activated carbon adsorption box (19) belongs to an activated carbon adsorption device (commodity) for purifying flue gas or organic waste gas, and activated carbon fibers or honeycomb activated carbon (18) are arranged in the activated carbon adsorption box and can adsorb and remove organic matters in the gas.
The granular or honeycomb-shaped dioxin decomposition catalyst (33) in the catalytic fixed bed (35) can be selected from dioxin decomposition catalysts (commodities) on the market or an MH-1 cocatalyst and an MH-2 catalyst, and is produced by environmental science and technology limited company of the Beijing Congji century.
The dust remover (22) belongs to a bag-type dust remover or an electric dust remover;
the garbage dryer (37) is solid material drying equipment, belongs to a drum dryer in which wet materials are in direct contact with high-temperature smoke gas for heat transfer to evaporate water, such as a livestock and poultry manure dryer, or a shell-and-tube spiral stirring dryer in which wet materials are in indirect contact with high-temperature smoke gas for heat transfer, namely, the wet materials in a tube are pushed by an in-tube spiral stirrer to move from a feed inlet in the tube to a discharge outlet (38) in the tube, a shell or smoke gas heating chamber (34) is arranged outside the tube, the high-temperature smoke gas enters the shell or smoke gas heating chamber (34) for indirect heat transfer of the wet materials in the tube, the water evaporation of the heated wet materials is changed into dry materials, water vapor is discharged from a steam outlet (42), enters an alkali liquor spraying tower (28) for treatment after passing through a steam pipe (44) and a steam inlet (43), and the smoke gas enters from a smoke gas inlet (30) at one end of the shell, and is discharged from a smoke outlet (39) at the other end of the shell.
The garbage comprises domestic garbage, medical garbage, kitchen garbage, agriculture and forestry organic garbage, waste plastics, waste rubber, waste electronic products, waste clothes, circuit boards, leather, waste medicinal materials, other organic wastes and industrial organic wastes.
In the utility model, dioxin in the flue gas is decomposed into carbon dioxide, water and hydrogen chloride under the action of a dioxin decomposition catalyst, which is one of the characteristics of the utility model, and the chemical reaction principle is as follows:
spraying a tower (28) with alkali liquor (caustic soda and lime milk) to remove acidic gas (NO) in the flue gas2、 H2S、SO3...) removing hydrogen chloride generated by decomposition of dioxin, and removing with alkaline solution to perform acid-base neutralization reaction;
HCL+Ca(OH)2→CaCL2+H2O
H2S+Ca(OH)2→CaS+H2O
NO2+Ca(OH)2→Ca(NO3)2+H2O
SO3++Ca(OH)2→CaSO4+H2O
SO2++Ca(OH)2→CaSO3+H2O
the garbage drying machine (37) is adopted to heat the wet garbage by the high-temperature flue gas released in the garbage incineration, so that the wet garbage is changed into dry garbage, the heat resource utilization in the garbage incineration is implemented, and the defect that the furnace temperature is increased by adding fuel oil in the traditional wet garbage incineration process is overcome, particularly, the garbage has more rainy seasons in the south of China and has large water content, the fuel oil needs to be added in the garbage incineration, the energy consumption is high, and the operation cost of the garbage incineration is high;
the utility model has the advantages that:
1. the utility model can reduce the concentration of dioxin in the flue gas to be less than the national standard 0.1TEQng/Nm3The catalytic activity of the catalyst reaches over 90 percent, and the catalyst has good industrial application prospect;
2. the utility model utilizes the waste heat in the garbage incineration to change wet garbage into dry garbage, thereby greatly reducing the energy consumption cost of the garbage incineration;
3. the equipment of the utility model belongs to the equipment known in the industry, has reliable operation, mature technology, simple structure, convenient maintenance and low cost;
4. the utility model can ensure that the concentration of dioxin discharged by flue gas in waste incineration reaches the national standard, can completely incinerate the waste to be full, implements the harmless treatment of the waste, and has good industrial practicability.
5. The utility model adopts the automatic control screen to automatically control and monitor the temperature, the ventilation quantity, the pressure of a pipeline system and the like in the waste incineration, thereby greatly maintaining the production stability and the safety of the waste incineration device.
Drawings
FIG. 1 is a flow chart diagram of the apparatus of the present invention;
in the figure, 1-a feeding device, 2-a feeding hole, 3-an incinerator, 4-a blower, 5-an incinerator flue gas outlet, 6-a pressure sensor, 7-an incinerator observation door, 8-a grate, 9-an ash box, 10-a temperature sensor, 11-an air quantity automatic control device, 12-a pressure alarm device, 13-an automatic control screen, 14-a temperature automatic control device, 15-a conveying device comprising a manual conveying device, a lifting machine or a conveying belt (dotted line), 16-a chimney, 17-an activated carbon adsorption box inlet, 18-honeycomb activated carbon, 19-an activated carbon adsorption box, 20-an induced draft fan, 21-a deduster air outlet, 22-a deduster, 23-a deduster air inlet, 24-an alkali liquor circulating pump and 25-an air inlet, 26-water pipe, 27-sprayer, 28-alkali liquor spray tower, 29-exhaust port, 30-flue gas inlet, 31-catalytic fixed bed gas outlet, 32-sieve plate, 33-dioxin decomposition catalyst, 34-flue gas heating chamber, 35-catalytic fixed bed, 36-catalytic fixed bed gas inlet, 37-garbage dryer, 38-dry garbage discharge port, 39-flue gas outlet, 40-ash discharge valve, 41-air inlet chamber, 42-steam outlet, 43-steam inlet, 44-cover plate of charging device, and 45-control device for opening or closing cover plate of charging device.
Detailed Description
The utility model is further illustrated, but not limited, by the following figures and examples.
Examples
As shown in fig. 1, 1500Kg of domestic garbage is pretreated by crushing or not crushing, and then is added into a garbage dryer (37) for dehydration and drying, and the dried dry garbage is loaded into a garbage can with the specification of 240 liters; starting a pneumatic hydraulic device (45), opening a cover plate (44), pouring garbage in a garbage can with the specification of 240 liters into a bin of a feeding device (1) through an electric hoist, and then operating the pneumatic hydraulic device (45) to close the cover plate (44); the garbage is added into an incinerator (3) (a vertical incinerator, a cylindrical furnace body, the inner diameter of a furnace chamber is 1500mm, the height is 2500mm, and the charging volume is 5.89 m) through a charging hole (2)3) Internal; starting the draught fan (20) and 5000m3The air blower (4) controls or sets the incineration temperature in the incinerator (3) by using a temperature automatic control device (14) on an automatic control screen (13) and a temperature sensor (10) on the incinerator (3), the temperature automatic control device (14) is connected with an air quantity automatic control device (11) by using a conducting wire, the temperature value in the incinerator (3) arranged on the temperature automatic control device (14) is transmitted to the air quantity automatic control device (11), the rotating speed and the ventilation quantity of the air blower (4) or a draught fan (20) are adjusted by using the air quantity automatic control device (11), the incineration temperature in the incinerator (3) is adjusted by using the ventilation quantity of cold air entering the incinerator (6), and the larger the flow of cold air conveyed to the incinerator (3) in unit time is, the faster the temperature in the incinerator (3) is reduced, and vice versa; sending a proper amount of air into a garbage incinerator (3) to incinerate garbage, and monitoring the smooth flow of flue gas from the incinerator (3) to a flue system or the condition of pressure rise caused by the blockage of a flue by foreign matters by adopting a pressure sensor (6) and a pressure alarm device (12) at any time; the temperature in the incinerator (3) is controlled at 550-750 ℃, the pressure is 0.02-0.08MPa, the garbage in the incinerator (3) is incinerated to ash after 152 minutes, the ash discharging valve (40) is opened periodically, and the garbage is incinerated to generateThe ash slag is discharged into an ash slag box (9) and is discharged regularly; the method comprises the steps that flue gas generated by waste incineration is discharged from an incinerator (3) and conveyed into a catalytic fixed bed (35), a honeycomb-shaped dioxin decomposition catalyst (33) is arranged in the catalytic fixed bed (35), the catalytic reaction temperature in the catalytic fixed bed (35) is controlled to be 210-350 ℃, the air speed of the flue gas is 2300/h, after the flue gas flows through the dioxin decomposition catalyst (33), the dioxin in the flue gas is decomposed into carbon dioxide, water and hydrogen chloride, the gas in the catalytic fixed bed (35) is discharged and conveyed into a shell of a waste dryer (37) or a flue gas heating chamber (34), and the waste heat of the flue gas is used for providing heat for dehydration and drying of wet waste; the heat required by the garbage drying is supplied by high-temperature flue gas entering a shell of a garbage dryer (37) or a flue gas heating chamber (34); under the driving action of a spiral stirring device (45) in the pipe, garbage moves from a feeding hole in the pipe to a dry garbage discharging hole (38) in the pipe, the garbage is heated, water is evaporated to be dry materials, water vapor is discharged from a steam outlet (42), the water vapor enters an alkali liquor spraying tower (28) through a steam pipe and a steam inlet (43) for treatment, 10 percent of calcium oxide liquid is conveyed to a sprayer (27) by an alkali liquor circulating pump (24) for spraying, the flue gas is subjected to neutralization reaction of deacidification and dust washing treatment by atomized alkali liquor, and HCL and CO in the flue gas are removed2、NO2、SO2、H2S and dust; the flue gas is subjected to gas-liquid separation in an alkali liquor spray tower (28) to carry out dehydration treatment on the flue gas, the dehydrated flue gas is introduced into an activated carbon adsorption box (22) to carry out purification treatment, activated carbon is used for adsorbing and removing organic waste gas in the flue gas, the flue gas is purified, the discharged gas reaching the standard is discharged into the atmosphere through a draught fan (20) and a chimney (16), inorganic residues generated after garbage incineration are discharged from an ash box (9), and the ash can be buried, or can be used as a building material raw material after metal recovery, crushing and purification through a magnetic separator;
in the process of 152 minutes of waste incineration, a gas discharged from a chimney was continuously sampled for 120 minutes in the field of dioxin production by using a krey ZR-3720 type dioxin flue gas sampler, and analyzed by using a Thermo DFS magnetic mass spectrometer (GC/MS), and analyzed and detected for dioxin according to the regulations of "isotope dilution high resolution gas chromatography-high resolution mass spectrometry for measuring dioxins in exhaust gas" (HJ 77. -2008).
The following main data and results are obtained through the process:
domestic garbage: 1500 KG:
physical properties of the garbage (Wt%): 36.6 percent of water, 63.4 percent of total solids (comprising carbohydrates, waste plastics, waste rubber, metals, inorganic matters and the like), 8.1 of pH value and 0.49 ton/m of garbage volume weight3；
1500kg of garbage occupies the volume: 3.06m3；
Hearth charge volume of incinerator 2: 5.89m3；
Analyzing garbage elements: h7.43% (wt%); c24.5% (wt%); o50.27% (wt%); 0.35 percent of S; n1.6% (wt%); 15.85% (wt%) of metal and inorganic matter;
in the incinerator (3): the incineration temperature is 280-3/h；
The garbage incineration treatment time is as follows: 152 minutes;
inorganic residues and metals: 237.8 kg;
average density of residue and metal: 2.12 ton/m3Or 0.47m3Per ton;
237.8kg residue and metals on volume: 0.11m3[ i.e., 0.47X 0.2378]；
The residual burning rate (V%) of the garbage slag is as follows: 3.65% [ (0.11 ÷ 3.06) × 100% ];
volume reduction rate of garbage (V%): 96.35% [ 100% -3.65% ];
catalyst parameters in the catalytic fixed bed (35):
dioxin decomposition catalyst (33): MH-1 cocatalyst and MH-2 catalyst, pore density: 21 holes/cm2，
Temperature of catalytic reaction: 220 ℃ and 350 ℃;
pressure in the catalytic fixed bed 5: 0.03-0.08 MPa;
space velocity of catalytic reaction: 1800 plus 2000h-1；
Dioxin test parameters in flue gas:
average oxygen content in flue gas: 6.5 percent;
dioxin sampling apparatus: a Zhongrui ZR-3720 type dioxin flue gas sampler;
dioxins analyzer: thermo DFS magnetic mass spectrometer (GC/MS);
sampling time of flue gas: 120 minutes;
and (3) testing results of dioxin in the discharged flue gas: 0.051ngTEQ/m3And the content of dioxin is less than 0.1TEQng/Nm below that specified in national standard (GB18485-2014) standard for controlling pollution of domestic waste incineration3。
Claims (3)
1. A waste incineration apparatus for decomposing dioxin with a catalyst, the apparatus comprising: the system comprises a temperature automatic control device, an air quantity automatic control device, a pressure alarm device, a feeding device, an incinerator, a blower, a draught fan, a garbage dryer, a dust remover, a clinker box, a catalytic fixed bed, an alkali liquor spray tower, an alkali liquor circulating pump, an activated carbon adsorption box, a chimney and an automatic control screen; the method is characterized in that: a temperature self-control device (14), a pressure alarm device (12) and an air volume self-control device (11) are arranged in the automatic control screen (13); the temperature automatic control device (14) is connected with a temperature sensor (10) arranged in the incinerator (3) through a conducting wire; the pressure alarm device (12) is connected with a pressure sensor (6) arranged in the incinerator (3) through a conducting wire; the air volume self-control device (11) is connected with an electric wire of the blower (4) through a conducting wire; the temperature automatic control device (14) is connected with the air volume automatic control device (11) through a conducting wire; the feeding device (1) is arranged above a feeding hole (2) of the incinerator (3) and communicated with the feeding hole (2) of the incinerator, the outlet of the blower (4) is communicated with an air inlet chamber (41) at the lower part of the incinerator (3) through a pipeline, the air inlet chamber (41) at the bottom of the incinerator (3) is communicated with a feeding hole of the ash box (9) through an ash discharge door valve (40), the flue gas outlet (5) of the incinerator is communicated with a gas inlet (36) of the catalytic fixed bed through a flue gas pipe, the gas outlet (31) of the catalytic fixed bed is communicated with a flue gas inlet (30) of the garbage dryer (37) through a flue pipe, and a dry garbage discharging port (38) of the garbage dryer (37) is communicated with a feeding bin of the feeding device (1) through a conventional material conveying device (15); garbage drying machine (37) exhanst gas outlet (39) are through air inlet (25) UNICOM of pipeline and alkali lye spray tower (28), garbage drying machine (37) upper portion steam outlet (42) are through steam pipe and alkali lye spray tower (28) lower part lateral wall steam inlet (43) UNICOM, gas vent (29) of alkali lye spray tower (28) are through pipeline and dust remover air inlet (23) UNICOM, dust remover gas outlet (21) are through pipeline and activated carbon adsorption case import (17) UNICOM, dispose honeycomb activated carbon (18) in activated carbon adsorption case (19), the gas vent of activated carbon adsorption case (19) is through pipeline and draught fan (20) import UNICOM, draught fan (20) export is through flue gas pipe and chimney (16) import UNICOM.
2. The waste incineration apparatus for decomposing dioxin with a catalyst according to claim 1, characterized in that: the feeding device (1) comprises a spiral feeder, a reciprocating feeder or a bucket type shell provided with a cover plate (44), wherein the cover plate (44) is arranged on the bucket type shell, a control device (45) for opening or closing the cover plate (44) is arranged on the cover plate (44), and a button on the control device (45) is started to open or close the cover plate (44); the control device (45) is a pneumatic hydraulic pump and belongs to a pneumatic hydraulic device.
3. The waste incineration apparatus for decomposing dioxin with a catalyst according to claim 1, characterized in that:
the garbage dryer (37) belongs to solid material drying equipment, and can adopt a drum dryer for directly contacting wet materials with high-temperature flue gas to transfer heat and evaporate water or a shell-and-tube spiral stirring dryer for indirectly contacting wet materials with high-temperature flue gas to transfer heat;
the incinerator (3) is a vertical garbage incinerator, a grate furnace garbage incinerator or a fluidized bed garbage incinerator;
the catalytic fixed bed (35) belongs to a gas-solid catalytic reaction device used in industry, and comprises a cylindrical or square shell, wherein a catalytic fixed bed gas inlet (36) and a catalytic fixed bed gas outlet (31) are arranged on the shell, a sieve plate (32) is arranged in the shell, and a granular or honeycomb-shaped dioxin decomposition catalyst (33) is placed on the sieve plate (32);
the alkali liquor spray tower (28) belongs to an alkali liquor spray device for purifying flue gas, an outlet of an alkali liquor circulating pump (24) is communicated with an inlet of a sprayer (27) at the middle upper part in the alkali liquor spray tower (28) through a water pipe (26), a sieve plate and a filler for separating gas from water are arranged at the upper part in the alkali liquor spray tower (28), and an exhaust port (29) is arranged at the top of the alkali liquor spray tower (28);
the dust remover (22) belongs to a bag-type dust remover or an electric dust remover;
the garbage dryer (37) is solid material drying equipment, belongs to a drum dryer in which wet materials are in direct contact with high-temperature flue gas to transfer heat so as to evaporate water, or is a shell-and-tube spiral stirring dryer in which wet materials are in indirect contact with high-temperature flue gas to transfer heat.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117046259A (en) * | 2023-08-21 | 2023-11-14 | 生态环境部南京环境科学研究所 | Device for low-temperature efficient desorption of dioxin by utilizing household garbage incineration fly ash |
-
2021
- 2021-08-06 CN CN202121827919.XU patent/CN216131927U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117046259A (en) * | 2023-08-21 | 2023-11-14 | 生态环境部南京环境科学研究所 | Device for low-temperature efficient desorption of dioxin by utilizing household garbage incineration fly ash |
| CN117046259B (en) * | 2023-08-21 | 2024-04-16 | 生态环境部南京环境科学研究所 | Device for low-temperature efficient desorption of dioxin by utilizing household garbage incineration fly ash |
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Effective date of registration: 20230518 Address after: 1st Floor, Building 52, No. 158 Dahongmen South Road, Fengtai District, Beijing, 100076 Patentee after: Beijing Zhongke Huiying Environmental Technology Co.,Ltd. Address before: 102445 Changyang Town, Fangshan District, Beijing, California, California, West 137 4 unit 703 Patentee before: Zhou Dingli |