CN110986054A - Sulfate rectification residue incineration and reduction integrated device and process - Google Patents
Sulfate rectification residue incineration and reduction integrated device and process Download PDFInfo
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- CN110986054A CN110986054A CN201911308421.XA CN201911308421A CN110986054A CN 110986054 A CN110986054 A CN 110986054A CN 201911308421 A CN201911308421 A CN 201911308421A CN 110986054 A CN110986054 A CN 110986054A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
- F23G5/165—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/008—Incineration of waste; Incinerator constructions; Details, accessories or control therefor adapted for burning two or more kinds, e.g. liquid and solid, of waste being fed through separate inlets
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/02—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of bagasse, megasse or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a sulfate rectification residue incineration and reduction integrated device which comprises a furnace body, wherein the furnace body is divided into a cyclone incineration area and a boiling reduction area; the cyclone incineration area is provided with a waste liquid combustor and a secondary air distribution device, and the waste liquid combustor is provided with a waste liquid inlet and a waste liquid primary air inlet; the boiling reduction zone is provided with a reducing gas injection device, an air distribution nozzle and a furnace bottom slag cooling device; the cyclone incineration area and the boiling reduction area are of an integrated structure; the invention also discloses a sulfate rectification residue incineration and reduction integrated process; the solid waste, the waste liquid and the waste gas in the device can be independently sprayed and incinerated, secondary air and primary air form reverse direction rotational flow, so that a high-temperature area in the furnace is vigorously stirred, the incineration efficiency is improved, and the removal rate of organic waste residues in sulfate rectification residues is improved; the strong heat radiation of the burning area is used for reducing the metal oxide, so that the fuel and equipment investment required by the reduction reaction are saved.
Description
Technical Field
The invention relates to the field of hazardous waste environment protection, in particular to a sulfate rectification residue incineration and reduction integrated device and a sulfate rectification residue incineration and reduction integrated process.
Background
In the industrial production process of organic chemistry, while useful products or intermediate products are obtained by a rectification separation technology, a certain amount of residue or residual liquid is mostly generated in a tower kettle, wherein the residue or residual liquid often contains more impurities and toxic and harmful substances, and the residue or residual liquid is often called as rectification residue in the management of dangerous waste in China. With the development of the organic chemical industry and the improvement of the refinement rate, the generation amount of the rectification residues is continuously increased. The rectification residue is mostly viscous tar-like liquid or solid, and the composition is complicated, still contain the inorganic salt who contains metallic element except containing main pollutant in the residue, main pollutant generally can be divided into benzene series thing, polycyclic aromatic hydrocarbon, halide, heavy metal and other types, it is the hazardous waste to have inflammability, corrosivity and high toxicity more, and inorganic salt in the rectification residue can be retrieved, if can not obtain effectual utilization and processing in the rectification residue, can cause the waste of resource and the pollution of environment.
Organic waste residue which can not be recycled in rectification residues is usually treated by high-temperature incineration, some heavy metals and sulfates containing metal elements in the rectification residues can be recycled, part of the sulfates are decomposed into metal oxides, sulfur dioxide and sulfur trioxide at high temperature, the metal oxides are recycled, if the metal simple substance is required to be used in the industry, the recycled metal oxides are required to be reduced into the metal simple substance under the high-temperature condition, reaction equipment needs to be introduced again in the process, the high-temperature condition needs to be provided, and the problems of complex operation and fuel waste exist.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an integrated incineration and reduction device for sulfate rectification residues, which adopts an integrated structure of a cyclone incineration zone and a boiling reduction zone, wherein waste solids, waste liquid and waste gas in the cyclone incineration zone can be independently sprayed and incinerated, and secondary air and primary air form a rotational flow in opposite directions, such that a high temperature zone in a furnace is vigorously agitated, the incineration efficiency is improved, and the removal rate of organic waste residues in the sulfate rectification residues is improved; the strong heat radiation of the burning area is used for reducing the metal oxide, so that the fuel and equipment investment required by the reduction reaction are saved.
The second purpose of the invention is to provide the integrated process for incinerating and reducing the sulfate rectification residues, which is characterized in that reducing gas is introduced, the strong heat radiation of an incineration area is utilized to reduce metal oxides into metal simple substances, the metal simple substances are recovered from the sulfate rectification residues, and metal mineral resources are saved.
The first technical scheme adopted by the invention is that the sulfate rectification residue incineration and reduction integrated device comprises a furnace body, wherein the furnace body is divided into a cyclone incineration area and a boiling reduction area; the cyclone incineration area is provided with a waste liquid combustor and a secondary air distribution device, and the waste liquid combustor is provided with a waste liquid inlet and a waste liquid primary air inlet; the boiling reduction zone is provided with a reducing gas injection device, an air distribution nozzle and a furnace bottom slag cooling device; the cyclone incineration area and the boiling reduction area are of an integrated structure.
Preferably, the cyclone incineration area is also provided with a waste solid combustor, and the waste solid combustor is provided with a waste solid inlet, a combustion improver inlet, a primary combustion-supporting air inlet and an auxiliary combustion device.
Preferably, the cyclone incineration area is also provided with two waste gas burners, the waste gas burners are provided with a waste gas inlet and a waste gas primary air inlet, and the two waste gas burners are symmetrically arranged.
Preferably, the waste solid burner, the waste liquid burner and the waste gas burner are arranged in layers from top to bottom; the cyclone incineration area can simultaneously treat and incinerate three wastes of solid waste, waste liquid and waste gas, and the solid waste, the waste liquid and the waste gas are independently sprayed and incinerated.
Preferably, the number of the waste liquid burners is two, and the two waste liquid burners are symmetrically arranged;
preferably, the waste liquid burner and the waste gas burner are arranged tangentially, and are used for ensuring the rotary combustion state of the waste materials in the device and a specific air flow speed.
Preferably, the cyclone incineration zone is positioned at the upper part, the boiling reduction zone is positioned at the lower part, and the sulfate rectification residue incineration and reduction integrated device is of a vertical structure.
Preferably, the secondary air distribution device is used for secondary air auxiliary combustion.
The second technical scheme adopted by the invention is that a sulfate rectification residue incineration and reduction integrated process comprises the following steps:
1) mixing the liquefied sulfate rectification residues with the primary air of the waste liquid in a waste liquid combustor, and spraying the mixture into a cyclone incineration area for incineration;
2) waste solid residues in the sulfate rectification residues are fed into a waste solid combustor, a combustion improver is combusted in an auxiliary combustion device to provide heat for the waste solid combustor, and the waste solid residues and primary combustion-supporting air are mixed and sprayed into a cyclone incineration area for incineration;
3) waste gas in the sulfate rectification residues is introduced into a waste gas combustor (13) to be mixed with primary air of the waste gas and blown into a cyclone incineration area for incineration;
4) incinerating the sulfate rectification residues in a cyclone incineration zone to remove organic wastes, decomposing sulfate into metal oxides, sulfur dioxide and sulfur trioxide, and making the metal oxides in a molten state flow into a boiling reduction zone;
5) introducing reducing gas into the boiling reduction zone, and reducing the metal oxide into a metal simple substance;
6) the reacted reducing gas and the incineration flue gas enter subsequent treatment equipment through a high-temperature flue gas discharge port;
7) the metal simple substance is recovered by a furnace bottom slag cooling device.
Preferably, the sulfate rectification residue comprises one or more of ferrous sulfate rectification residue, ferric sulfate rectification residue and copper sulfate rectification residue; the reducing gas comprises carbon monoxide or hydrogen; the combustion improver comprises natural gas or gas.
Preferably, the temperature in the cyclone incineration area is more than or equal to 1100 ℃, and the temperature of the incineration flue gas outlet is more than or equal to 1100 ℃.
Preferably, the reducing gas is introduced to raise the space between the layers of metal oxide material from 200mm to 300mm to form a reduction cell.
Preferably, the temperature in the reduction tank is 1100-1150 ℃, and the oxidation-reduction reaction time of the metal oxide and the reducing gas is more than 2 s.
Preferably, the boiling combustion regime in the boiling reduction zone is intermediate between stratified charge combustion and suspension combustion.
The beneficial effects of the technical scheme are as follows:
(1) the waste solids, the waste liquid and the waste gas can be independently sprayed and incinerated, secondary air and primary air form rotational flow in opposite directions, so that a high-temperature area in the furnace is vigorously stirred, the incineration efficiency is improved, the removal rate of organic waste residues in sulfate rectification residues is improved, meanwhile, the corrosion of mixed combustion of the waste solids, the waste liquid and the waste gas to a furnace body is reduced, and the service life of the furnace body is prolonged.
(2) The cyclone burning zone and the boiling reduction zone are integrated, so that organic waste residues in the sulfate rectification residues are removed, and meanwhile, the strong heat radiation of the burning zone is utilized to reduce metal oxides, so that the fuel and equipment investment required by reduction reaction are saved.
(3) The integrated design saves the occupied space of the equipment and the construction cost.
(4) The metal simple substance in the sulfate rectification residue after incineration reduction is recycled, and metal mineral resources are saved.
Drawings
FIG. 1 is a schematic diagram of a sulfate rectification residue incineration and reduction integrated device.
Among them are: 1-cyclone burning zone, 11-waste solid burner, 12-waste liquid burner, 13-waste gas burner, 14-secondary air distribution device, 111-waste solid inlet, 112-combustion improver inlet, 113-primary combustion-supporting air inlet, 2-boiling reduction zone, 21-reducing gas injection device, 22-air distribution nozzle, 23-furnace bottom slag cooling device and 24-high temperature flue gas discharge outlet.
Detailed Description
The present invention is further illustrated by the following specific examples, it should be noted that, for those skilled in the art, variations and modifications can be made without departing from the principle of the present invention, and these should also be construed as falling within the scope of the present invention.
Example 1
As shown in fig. 1, the sulfate rectification residue incineration and reduction integrated device provided by the invention comprises a furnace body, wherein the furnace body is divided into a cyclone incineration area 1 and a boiling reduction area 2; the cyclone incineration area 1 is provided with a waste liquid combustor 12 and a secondary air distribution device 14, and the waste liquid combustor 12 is provided with a waste liquid inlet and a waste liquid primary air inlet; the boiling reduction zone 2 comprises a reducing gas injection device 21, an air distribution nozzle 22 and a furnace bottom slag cooling device 23; the cyclone incineration zone 1 and the boiling reduction zone 2 are of an integrated structure.
The liquefied ferrous sulfate rectification residues are mixed with waste liquid primary air in a waste liquid combustor 12 and sprayed into a cyclone incineration area 1 for incineration, secondary air blown in by a secondary air distribution device 14 and the primary air form reverse-direction rotational flow, so that a high-temperature area in the furnace is stirred violently, and the incineration efficiency is improved. Burning the ferrous sulfate rectification residues to remove organic wastes, decomposing the ferrous sulfate into ferric oxide, sulfur dioxide and sulfur trioxide at 500 ℃, and making the ferric oxide into a molten state and flowing into a boiling reduction zone 2; in the boiling reduction zone 2, carbon monoxide as a reducing gas is introduced, the reducing gas with certain wind pressure is changed into a static pressure head which is uniformly distributed from a dynamic pressure head of primary wind through a wind equalizing pipe, and the reducing gas is blown into the furnace at high speed from micropores on a blast cap through a throttle valve, so that an air cushion layer is formed on a boiling bed to blow up and turn over ferrous oxide powder. Because the gas increases the gaps among the powders, the material layer expands to generate violent movement and continuously overturns, so that the original iron oxide material layer with the thickness of 200mm is lifted to 300mm to form a reduction pool. The carbon monoxide is introduced into the rectification residue in an amount of 270 Nm/kg3(ii) a Carrying out redox reaction on the iron oxide and carbon monoxide, wherein the iron oxide is reduced into an iron simple substance, and the carbon monoxide is oxidized into carbon dioxide; the generated carbon dioxide and incineration flue gas enter the subsequent part through the high-temperature flue gas discharge port 24Managing the equipment; the iron simple substance is recovered by a furnace bottom slag cooling device 23, the reaction time of the ferric oxide and the carbon monoxide is 2s, and the temperature of a reduction pool is 1100 ℃.
The sulfate rectification residue incineration and reduction integrated device solves the problems of environmental protection treatment of ferrous sulfate rectification residues and reduction and utilization of iron oxide in the ferrous sulfate rectification residues after recovery; the device is an integrated device, so that space and fuel are saved; in the process, the organic waste residue in the ferrous sulfate rectification residue can be treated, the iron simple substance can be recycled, and the metal mineral resources are saved.
Example 2
As shown in fig. 1, the sulfate rectification residue incineration and reduction integrated device provided by the invention comprises a furnace body, wherein the furnace body is divided into a cyclone incineration area 1 and a boiling reduction area 2; the cyclone incineration area 1 is provided with a waste liquid combustor 12 and a secondary air distribution device 14, and the waste liquid combustor 12 is provided with a waste liquid inlet and a waste liquid primary air inlet; the boiling reduction zone 2 comprises a reducing gas injection device 21, an air distribution nozzle 22 and a furnace bottom slag cooling device 23; the cyclone incineration zone 1 and the boiling reduction zone 2 are of an integrated structure.
The liquefied copper sulfate rectification residues are mixed with waste liquid primary air in a waste liquid combustor 12 and sprayed into a cyclone incineration area 1 for incineration, secondary air blown in by a secondary air distribution device 14 and the primary air form reverse-direction rotational flow, so that a high-temperature area in the furnace is stirred violently, and the incineration efficiency is improved. The copper sulfate rectification residues are incinerated to remove organic wastes, copper sulfate is decomposed into copper oxide, sulfur dioxide and sulfur trioxide at 1200 ℃, and the copper oxide flows into a boiling reduction zone 2 in a molten state; introducing reducing gas carbon monoxide into the boiling reduction zone 2, wherein the clearance between copper oxide material layers is increased from 200mm to 300mm to form a reduction pool, and the introduction amount of the carbon monoxide is 180Nm3 per kg of rectification residues; carrying out oxidation-reduction reaction on copper oxide and carbon monoxide, wherein the copper oxide is reduced into a copper simple substance, and the carbon monoxide is oxidized into carbon dioxide; the generated carbon dioxide and incineration flue gas enter subsequent treatment equipment through a high-temperature flue gas discharge port 24; the copper simple substance is recovered by a furnace bottom slag cooling device 23, the reaction time of the copper oxide and the carbon monoxide is 3s, and the temperature of a reduction pool is 1150 ℃.
The sulfate rectification residue incineration and reduction integrated device simultaneously solves the problems of environmental protection treatment of the copper sulfate rectification residue and reduction and utilization of the copper oxide in the copper sulfate rectification residue after recovery; the device is an integrated device, so that space and fuel are saved; in the process, the organic waste residue in the copper sulfate rectification residue can be treated, the copper simple substance can be recycled, and the metal mineral resources are saved.
Example 3
As shown in fig. 1, the sulfate rectification residue incineration and reduction integrated device provided by the invention comprises a furnace body, wherein the furnace body is divided into a cyclone incineration area 1 and a boiling reduction area 2; the cyclone incineration area 1 is provided with a waste liquid combustor 12 and a secondary air distribution device 14, and the waste liquid combustor 12 is provided with a waste liquid inlet and a waste liquid primary air inlet; the boiling reduction zone 2 comprises a reducing gas injection device 21, an air distribution nozzle 22 and a furnace bottom slag cooling device 23; the cyclone incineration zone 1 and the boiling reduction zone 2 are of an integrated structure.
The cyclone incineration area 1 is also provided with a waste solid combustor 11, and the waste solid combustor 11 is provided with a waste solid inlet 111, a combustion improver inlet 112, a primary combustion-supporting air inlet 113 and an auxiliary combustion device.
The cyclone incineration area 1 is also provided with a waste gas combustor 13, and the waste gas combustor 13 is provided with a waste gas inlet and a waste gas primary air inlet.
The waste solid burner, the waste liquid burner and the waste gas burner are arranged in layers from top to bottom; the cyclone incineration area can independently treat three wastes of waste solid, waste liquid and waste gas at the same time.
Mixing waste solids in the rectification residues of ferric sulfate and copper sulfate and primary combustion-supporting air in a waste solids combustor 11, and then spraying the mixture into a cyclone incineration area 1, wherein a combustion-supporting agent is combusted in an auxiliary combustor through a combustion-supporting agent inlet 112 to provide heat for the waste solids combustor; mixing the liquefied ferric sulfate and copper sulfate rectification residue waste liquid and the waste liquid primary air in the waste liquid combustor 12 and then spraying the mixture into the cyclone incineration area 1, mixing the waste gas and the waste gas primary air in the ferric sulfate and copper sulfate rectification residue in the waste gas combustor 13 and then blowing the mixture into the cyclone incineration area 1; the waste solid, the waste liquid and the waste gas are respectively sprayed into the cyclone incineration area 1 through a waste solid combustor 11, a waste liquid combustor 12 and a waste gas combustor 13 to be incinerated; the secondary air blown in by the secondary air distribution device 14 and the primary air form reverse rotational flows, so that a high-temperature area in the furnace is stirred violently, and the incineration efficiency is improved; waste solid, waste liquid and waste in the waste gas are removed by incineration; inorganic salts containing metals in the waste solid and the waste liquid flow into the boiling reduction area 2, and the metals in the inorganic salts are reduced and recovered.
The utility model provides a sulfate rectification residue burns reduction integrated device realizes that useless solid, waste liquid, waste gas independently spout into burning, and secondary air forms opposite direction whirl with the primary air, makes the interior high temperature zone of stove stir violently, improves incineration efficiency, improves organic waste residue clearance in the sulfate rectification residue.
Claims (10)
1. A sulfate rectification residue incineration and reduction integrated device is characterized by comprising a furnace body, wherein the furnace body is divided into a cyclone incineration area (1) and a boiling reduction area (2); the cyclone incineration area (1) is provided with a waste liquid combustor (12) and a secondary air distribution device (14), and the waste liquid combustor (12) is provided with a waste liquid inlet and a waste liquid primary air inlet; the boiling reduction zone (2) is provided with a reducing gas injection device (21), an air distribution nozzle (22) and a furnace bottom slag cooling device (23); the cyclone incineration zone (1) and the boiling reduction zone (2) are of an integrated structure.
2. The sulfate rectification residue incineration and reduction integrated device as claimed in claim 1, wherein the cyclone incineration zone (1) is further provided with a waste solid combustor (11), and the waste solid combustor (11) is provided with a waste solid inlet (111), a combustion improver inlet (112), a primary combustion-supporting air inlet (113) and an auxiliary combustion device.
3. The sulfate rectification residue incineration and reduction integrated device as claimed in claim 2, wherein the cyclone incineration zone (1) is further provided with a waste gas burner (13), the waste gas burner (13) is provided with a waste gas inlet and a waste gas primary air inlet, and the number of the waste gas burners (13) is two.
4. The sulfate rectification residue incineration and reduction integrated device as claimed in claim 3, wherein the waste solid burner, the waste liquid burner and the waste gas burner are arranged in layers from top to bottom; the cyclone incineration area can independently treat three wastes of waste solid, waste liquid and waste gas at the same time.
5. A sulfate rectification residue incineration and reduction integrated device according to any one of claims 1 to 4, characterized in that two waste liquor burners (12) are provided, the waste liquor burners (12) being arranged tangentially.
6. The sulfate rectification residue incineration and reduction integrated process is characterized by comprising the following steps of:
1) the liquefied sulfate rectification residues are mixed with waste liquid primary air in a waste liquid combustor (12) and sprayed into a cyclone incineration area (1) for incineration;
2) waste solid residues in the sulfate rectification residues are put into a waste solid combustor (11), a combustion improver is combusted in an auxiliary combustion device to provide heat for the waste solid combustor, and the waste solid residues and primary combustion-supporting air are mixed and sprayed into a cyclone incineration zone (1) for incineration;
3) waste gas in the sulfate rectification residues is introduced into a waste gas combustor (13) to be mixed with primary air of the waste gas and blown into a cyclone incineration area (1) for incineration;
4) the sulfate rectification residues are incinerated in a cyclone incineration zone (1) to remove organic wastes, sulfate is decomposed into metal oxide, sulfur dioxide and sulfur trioxide, and the metal oxide flows into a boiling reduction zone (2) in a molten state;
5) in the boiling reduction zone (2), reducing gas is introduced, and the metal oxide is reduced into a metal simple substance;
6) the reacted reducing gas and the incineration flue gas enter subsequent treatment equipment through a high-temperature flue gas discharge port (24);
7) the metal simple substance is recovered by a furnace bottom slag cooling device (23).
7. The integrated sulfate distillation residue incineration and reduction process as claimed in claim 6, wherein the sulfate distillation residue comprises one or more of ferrous sulfate distillation residue, ferric sulfate distillation residue and copper sulfate distillation residue; the reducing gas comprises carbon monoxide or hydrogen; the combustion improver comprises natural gas or gas.
8. The sulfate rectification residue incineration and reduction integrated process as claimed in claim 6, wherein the temperature in the cyclone incineration zone (1) is more than or equal to 1100 ℃, and the incineration flue gas outlet temperature is more than or equal to 1100 ℃.
9. The sulfate rectification residue incineration and reduction integrated process as claimed in claim 6, wherein the reducing gas is introduced, and a gap between metal oxide material layers is 300mm, so that a reduction pool is formed.
10. The sulfate rectification residue incineration and reduction integrated process as claimed in claim 9, wherein the temperature in the reduction tank is 1100-1150 ℃, and the oxidation-reduction reaction time of the metal oxide and the reducing gas is more than 2 s.
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| CN109931615A (en) * | 2019-04-23 | 2019-06-25 | 宝钢工程技术集团有限公司 | A kind of industrial and municipal solid waste melt pyrolysis system |
| CN109974009A (en) * | 2019-04-26 | 2019-07-05 | 北京科太亚洲生态科技股份有限公司 | A kind of three wastes integrated reactor and the method for nitrous gas disposal |
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Effective date of registration: 20210122 Address after: 100081 2803-1, 24 / F, building 1, courtyard B 12, Zhongguancun South Street, Haidian District, Beijing Patentee after: ECOTEC ECO-TEC ASIA (BEIJING) Co.,Ltd. Patentee after: JIANGSU AEROSPACE HEWLETT ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 100022 1301, yuanjialong building, No.1, South East Third Ring Road, Chaoyang District, Beijing Patentee before: ECOTEC ECO-TEC ASIA (BEIJING) Co.,Ltd. |