CN111043867B - System and method for treating household garbage by utilizing ironmaking waste heat - Google Patents
System and method for treating household garbage by utilizing ironmaking waste heat Download PDFInfo
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- CN111043867B CN111043867B CN201911031243.0A CN201911031243A CN111043867B CN 111043867 B CN111043867 B CN 111043867B CN 201911031243 A CN201911031243 A CN 201911031243A CN 111043867 B CN111043867 B CN 111043867B
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 59
- 239000002918 waste heat Substances 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 46
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000003546 flue gas Substances 0.000 claims abstract description 48
- 230000008569 process Effects 0.000 claims abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 20
- 238000005469 granulation Methods 0.000 claims abstract description 12
- 230000003179 granulation Effects 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims description 49
- 239000002245 particle Substances 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 claims description 8
- 238000010248 power generation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 230000000593 degrading effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000002309 gasification Methods 0.000 description 6
- 238000000197 pyrolysis Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000004056 waste incineration Methods 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 238000009776 industrial production Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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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
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
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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
-
- 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
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
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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
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a system and a method for treating domestic garbage by utilizing ironmaking waste heat, which comprises a rotary cup granulating device, a high-temperature dust remover, a waste heat boiler, a pressurized circulating fan, a blower, a hot blast stove, a rotary kiln and a fluidized furnace, wherein the blast furnace is connected with the rotary cup granulating device through a launder, the inlet of the rotary cup granulating device is connected with the blower through a pipeline, the high-temperature outlet of the rotary cup granulating device is connected with the waste heat boiler and a generator set through the high-temperature dust remover, the flue gas outlet of the waste heat boiler is connected with the pressurized circulating fan, and a chimney is arranged on the pipeline between the flue gas outlet of the waste heat boiler and the; the revolving cup granulation device is connected with the fluidized furnace through a pipeline; the hot blast stove is connected with the rotary kiln through a pipeline, and the outlet of the rotary kiln is connected with the fluidized furnace. The invention fully utilizes the waste heat resources of the blast furnace process to form an effective treatment process of the municipal refuse, and reduces pollutants generated by degrading the municipal refuse by a high-temperature fluidized incineration technology.
Description
Technical Field
The invention belongs to the field of household garbage treatment, and particularly relates to a system and a method for treating household garbage by utilizing ironmaking waste heat.
Background
With the rapid increase of population and the improvement of living standard in China, domestic garbage becomes an important problem influencing the environment in China increasingly. The garbage incineration treatment is the most common garbage treatment method applied abroad at present, and the method has the greatest advantage of high garbage recycling and reduction treatment degree, and becomes a main path for treating household garbage in developed countries and an important component part in the power industry. The garbage incineration process mainly comprises a furnace grate method, a circulating fluidized bed method, a pyrolysis method, a gasification method and the like, wherein the furnace grate method has the highest application proportion.
Iron and steel enterprises have a large amount of low-end waste heat resources, are limited by the use efficiency of low-temperature energy, have poor utilization effect, and lose a large amount of waste heat resources and cause environmental pollution of the iron and steel enterprises at the same time by large-scale emission. The main waste heat resources of the iron-making process are blast furnace slag waste heat and hot blast stove flue gas waste heat, the blast furnace slag is generally processed by an INBA water quenching method, high-quality waste heat resources are reduced to low-quality resource utilization, the low efficiency is generally below 10%, and a large amount of new water pollution is caused. The temperature of the flue gas discharged by the hot blast stove is about 250-300 ℃, and the flue gas is generally not recycled.
Patent application No.: 201510677347.4, a process for incinerating domestic garbage by a steel converter, which comprises the steps of adding scrap steel, molten iron, slagging materials and garbage into the steel converter to carry out incineration treatment by using the high temperature of 1300-1600 ℃ generated in the smelting process of the converter. The method adds carbon to the garbage in the converter, needs to improve smelting strength and oxygen consumption, and simultaneously, metal and other impurities in the garbage have great influence on the quality of molten steel.
Patent application No.: 200410014310.5A process for incinerating medical garbage includes such steps as loading the medical garbage in a feeder by a sealed transporting vehicle, automatically lifting the medical garbage by feeder, dewatering, drying, pyrolysis, gasifying, combustion, secondary combustion, settling fume, recovering afterheat and treating fume. The pyrolysis gasification type incinerator consists of a vertical pyrolysis furnace and a secondary combustion chamber, garbage moves from top to bottom by virtue of gravity, wind is blown into the incinerator from bottom to top by an air blower, a drying layer, a pyrolysis layer, an oxidation combustion layer and a slag layer from top to bottom are sequentially formed in the incinerator, and through dehydration and drying of the garbage, pyrolysis gasification, evaporation combustion of volatile gas and gradual staged reaction of fixed carbon combustion are carried out, so that the volume of the garbage is reduced by 99%, the generation of dioxin can be effectively prevented, the thermal ignition reduction rate of garbage residues is low, and the investment and operation cost is low. This mode uses the fluidizer to carry out waste incineration, does not realize the conversion of energy, and waste incineration produces waste gas and pollutant can't effective processing.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a system and a method for treating domestic garbage by utilizing ironmaking waste heat, wherein garbage incineration and waste heat recovery are integrated, the quality of waste heat resources of an ironmaking system is improved by utilizing blast furnace slag waste heat, hot blast furnace tail gas waste heat and municipal waste heat value, and the waste heat utilization efficiency of an ironmaking process is improved while municipal waste is treated by industrial production.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a system for treating domestic garbage by utilizing ironmaking waste heat comprises a rotary cup granulating device, a high-temperature dust remover, a waste heat boiler, a pressurized circulating fan, a blower, a hot blast stove, a rotary kiln and a fluidized furnace, wherein the blast furnace is connected with the rotary cup granulating device through a launder, the inlet of the rotary cup granulating device is connected with the blower through a pipeline, the high-temperature outlet of the rotary cup granulating device is connected with the waste heat boiler and a generator set through the high-temperature dust remover, the flue gas outlet of the waste heat boiler is connected with the pressurized circulating fan, and a chimney is arranged on the pipeline between the flue gas outlet of the waste heat boiler and the pressurized circulating fan; the revolving cup granulation device is connected with the fluidized furnace through a pipeline; the hot blast stove is connected with the rotary kiln through a pipeline, and the outlet of the rotary kiln is connected with the fluidized furnace.
The utility model provides a method for utilize ironmaking waste heat treatment domestic waste, utilizes ironmaking process blast furnace slag heat and hot-blast furnace flue gas waste heat to handle municipal refuse, retrieves hot-blast furnace flue gas waste heat, blast furnace slag sensible heat and latent heat and municipal refuse's heat simultaneously and produces high-temperature high-pressure steam power generation, passes through high temperature treatment with dry rubbish and rubbish burning's waste gas simultaneously, specifically includes following step:
1) blast furnace slag generated by a blast furnace is guided into a revolving cup granulating device through a chute, the blast furnace slag is crushed into slag particles through the revolving cup granulating device, latent heat and sensible heat of the blast furnace slag are brought out through a blower in the granulating process, the blast furnace slag particles cooled by the revolving cup granulating device enter a fluidized furnace from the top of a fluidized furnace, and hot air after heat exchange enters a high-temperature dust remover;
2) low-temperature flue gas generated by the hot blast stove enters the kiln head of the rotary kiln through a pipeline, municipal refuse entering from the kiln tail is dried, meanwhile, the refuse is fully loosened through the rolling of the rotary kiln, the dried refuse enters from the fluidized bed furnace, and the dried low-temperature waste gas enters a pressurized circulating fan;
3) mixed gas of waste heat boiler outlet air and dried air enters the fluidized bed furnace from a bottom high-pressure air inlet through a circulating fan, falling materials are preheated in a preheating zone, the mixed gas is divided by a grate plate to push the dried garbage entering from a garbage inlet to rise and mixed with high-temperature slag particles entering from a blast furnace slag inlet to be ignited to form a stable combustion zone, generated high-temperature flue gas flows out of the fluidized bed furnace from a high-temperature flue gas outlet and enters a high-temperature dust collector together with hot air after heat exchange with a revolving cup granulating device, and blast furnace slag and a small amount of dust after full heat exchange are discharged from a material outlet;
4) high-temperature air generated by high-temperature flue gas and the rotary cup granulation device enters a waste heat boiler to generate steam and then enters a generator set to generate power after being dedusted by a high-temperature deduster, discharged low-temperature air serving as a power source and a heat exchange medium enters a fluidized bed from the bottom through a pressurizing circulating fan, a diffusing chimney is added before the low-temperature flue gas enters the pressurizing fan, and the redundant flue gas is diffused to ensure the stable operation of a flue gas system.
The blast furnace slag generated by the blast furnace in the step 1) is 1400-1600 ℃.
Step 1), crushing blast furnace slag into slag particles with the diameter of 3-10 mm by using a transfer cup granulation device, and introducing 50000-100000 Nm3/t high-pressure air into a blower in the granulation process; the blast furnace slag particles with the temperature of 600-1000 ℃ after being cooled by the revolving cup granulation device enter the fluidized furnace from the top of the fluidized furnace.
The low-temperature flue gas in the step 2) is flue gas at 300-350 ℃.
And 2), the water content of the dried garbage is less than 5%.
The high-temperature flue gas in the step 3) is flue gas at 1000-1200 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the invention fully utilizes the waste heat resources of the blast furnace process to form an effective treatment process of the municipal refuse, reduces pollutants generated by degrading the municipal refuse by a high-temperature fluidized incineration technology, improves the quality of the waste heat resources of the blast furnace process by utilizing the heat provided by the municipal refuse, and improves the heat productivity of the waste heat resources.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
FIG. 2 is a schematic view of the operation of the fluidized furnace.
In the figure: 1-blast furnace 2-launder 3-revolving cup granulation device 4-high temperature dust collector 5-exhaust-heat boiler 6-generator set 7-chimney 8-pressurized circulating fan 9-fluidized furnace 10-rotary kiln 11-blower 12-hot blast furnace 13-blast furnace slag inlet 14-garbage inlet 15-grid plate 16-waste material discharge port 17-high pressure air inlet 18-high temperature flue gas outlet.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1, a system for treating domestic garbage by utilizing ironmaking waste heat comprises a rotary cup granulating device 3, a high-temperature dust remover 4, a waste heat boiler 5, a pressurized circulating fan 8, a blower 11, a hot blast stove 12, a rotary kiln 10 and a fluidized furnace 9, wherein a blast furnace 1 is connected with the rotary cup granulating device 3 through a launder 2, an inlet of the rotary cup granulating device 3 is connected with the blower 11 through a pipeline, a high-temperature outlet of the rotary cup granulating device 3 is connected with the waste heat boiler 5 and a generator set 6 through the high-temperature dust remover 4, a flue gas outlet of the waste heat boiler 5 is connected with the pressurized circulating fan 8, and a chimney 7 is arranged on the pipeline between the flue gas outlet of the waste heat boiler 5 and the pressurized circulating fan 8; the revolving cup granulation device 3 is simultaneously connected with the fluidized furnace 9 through a pipeline; the hot blast stove 12 is connected with the rotary kiln 10 through a pipeline, and the outlet of the rotary kiln 10 is connected with the fluidized furnace 9.
As shown in figure 1, the system and the method for treating domestic garbage by using iron-making waste heat aim at the problem of urban garbage treatment, the urban garbage is treated by using the heat of blast furnace 1 slag and the waste heat of hot blast furnace 12 flue gas in the iron-making process, and high-temperature and high-pressure steam power generation is generated by recycling the waste heat of hot blast furnace 12 flue gas, sensible heat and latent heat of blast furnace 1 slag and the heat of urban garbage, so that the utilization efficiency of waste heat resources is greatly improved, and the pollution of garbage incineration to the environment is reduced by performing high-temperature treatment on waste gas generated by burning dry garbage and garbage. The method specifically comprises the following steps:
1. the slag of the blast furnace 1, which is generated by the blast furnace 1 and has the temperature of 1400-1500 ℃, is guided into a revolving cup granulating device 3 through a launder 2, the slag of the blast furnace 1 is crushed into slag particles with the diameter of 3-10 mm through the high-speed rotation of a revolving cup in the revolving cup granulating device 3, and 50000-100000 Nm is introduced through a blower 11 in the granulating process3The/t high-pressure air of the slag brings out the latent heat and the sensible heat of the slag of the blast furnace 1, the slag particles of the blast furnace 1 with the temperature of 600-1000 ℃ cooled by the revolving cup granulation device 3 enter the fluidized furnace 9 from the top of the fluidized furnace 9, and the hot air after heat exchange enters the high-temperature dust remover 4.
2. The hot blast stove 12 (the generated low-temperature flue gas with the temperature of 300-350 ℃ enters the kiln head of the rotary kiln 10 through a pipeline, the municipal refuse entering from the kiln tail is dried, meanwhile, the refuse is fully loosened through the rolling of the rotary kiln 10, the dried refuse (the water content is less than 5%) enters from the furnace waist of the fluidized furnace 9, and the dried low-temperature waste gas enters the pressurizing circulating fan 8.
3. Mixed gas of air at an outlet of the waste heat boiler 5 and dried air enters the fluidized bed furnace 9 from a bottom high-pressure air inlet 17 through a circulating fan (with the pressure of 5-8 MPa), falling materials are preheated in a preheating zone, the mixed gas is shunted through a grate plate 15 to push dried garbage entering from a garbage inlet 14 to rise and to be mixed and ignited with high-temperature slag particles entering from a blast furnace slag inlet 13 to form a stable combustion zone, generated high-temperature flue gas with the temperature of 1000-1200 ℃ flows out of the fluidized bed furnace 9 from a high-temperature flue gas outlet 18 and enters a high-temperature dust collector 4 together with hot air after heat exchange of the rotary cup granulating device 3, and blast furnace 1 slag and a small amount of dust after sufficient heat exchange are discharged from a material outlet, which is shown in figure 2.
4. High-temperature air generated by high-temperature flue gas and the rotary cup granulating device 3 enters a high-temperature dust remover 4 for dust removal and then enters a waste heat boiler 5 for generating steam, the steam further enters a generator set 6 for power generation, discharged low-temperature air is used as a power source and a heat exchange medium and enters a gasification furnace 9 from the bottom through a pressurizing circulating fan 8, a diffusing chimney 7 is additionally arranged before the low-temperature flue gas enters the pressurizing fan, and the redundant flue gas is diffused to ensure the stable operation of a flue gas system.
Example 1
At 3200m3For example, the blast furnace 1 produces 7500t of iron per day and 103.13t/h of slag per hour, and 86337Nm is blown in3The normal temperature air and the blast furnace 1 slag at 1500 ℃ fully exchange heat, hot air at 1000 ℃ is taken out, 111.37GJ/h heat is recovered in hours, and slag particles at 850 ℃ enter a fluidized bed furnace 9 to be ignited into dried garbage; the hot blast stove 12 generates 230000Nm smoke at 300 DEG C3And h, drying 110t/h of urban garbage, wherein the heat value of the urban garbage is 4000kJ/kg, the hourly heat productivity is 330GJ/h, the heat is brought into the gasification furnace 9, flue gas at 1100 ℃ is generated, 99GJ/h heat is recycled hourly, the cogeneration efficiency is 21%, and the hourly power generation capacity is 12289.63 kWh.
Example 2
At 2580m3For example, the blast furnace 1 is produced at 5300t iron day, the slag yield in reduced hours is 72.85t/h, and the blast furnace is 61011Nm3The normal temperature air and the blast furnace 1 slag at 1500 ℃ fully exchange heat, hot air at 1050 ℃ is taken out, 78.71GJ/h heat is recovered in hours, and slag particles at 800 ℃ enter a fluidized bed furnace 9 to be ignited into dried garbage; the hot blast stove 12 generates smoke 115654Nm at 300 DEG C3And h, 82t/h of municipal waste can be dried, the heat value of the municipal waste is 4000kJ/kg, the hourly heat value is 246GJ/h, the heat is brought into the gasification furnace 9, flue gas at 1100 ℃ is generated, 73.8GJ/h of heat is recycled hourly, the waste heat power generation efficiency is 21%, and the hourly power generation amount is 8908.99 kWh.
Claims (6)
1. A method for utilizing ironmaking waste heat to process domestic garbage, the system for utilizing ironmaking waste heat to process domestic garbage of realizing said method includes the granulating device of the rotary cup, high-temperature dust remover, exhaust-heat boiler, pressurized circulation fan, air-blower, hot-blast furnace, rotary kiln, fluidized furnace, the blast furnace is connected with granulating device of the rotary cup through the launder, the inlet of granulating device of the rotary cup is connected with air-blower through the pipeline, the high-temperature outlet of the granulating device of the rotary cup is connected with exhaust-heat boiler, generator set through the high-temperature dust remover, the fume outlet of the exhaust-heat boiler is connected with pressurized circulation fan, and set up the chimney on the pipeline between fume outlet and pressurized circulation fan of the exhaust-heat boiler; the revolving cup granulation device is connected with the fluidized furnace through a pipeline; the hot blast stove is connected with the rotary kiln through a pipeline, and the outlet of the rotary kiln is connected with the fluidized furnace; the method for treating the household garbage by utilizing the ironmaking waste heat is characterized by comprising the following steps:
utilize ironmaking process blast furnace slag heat and hot-blast furnace flue gas waste heat to handle municipal refuse, retrieve the high-pressure steam power generation of heat production high temperature of hot-blast furnace flue gas waste heat, blast furnace slag sensible heat and latent heat and municipal refuse simultaneously, the waste gas that will dry rubbish and rubbish burning passes through high temperature treatment simultaneously, specifically includes following step:
1) blast furnace slag generated by a blast furnace is guided into a revolving cup granulating device through a chute, the blast furnace slag is crushed into slag particles through the revolving cup granulating device, latent heat and sensible heat of the blast furnace slag are brought out through a blower in the granulating process, the blast furnace slag particles cooled by the revolving cup granulating device enter a fluidized furnace from the top of a fluidized furnace, and hot air after heat exchange enters a high-temperature dust remover;
2) low-temperature flue gas generated by the hot blast stove enters the kiln head of the rotary kiln through a pipeline, municipal refuse entering from the kiln tail is dried, meanwhile, the refuse is fully loosened through the rolling of the rotary kiln, the dried refuse enters from the fluidized bed furnace, and the dried low-temperature waste gas enters a pressurized circulating fan;
3) the mixed gas of the air at the outlet of the waste heat boiler and the dried low-temperature waste gas enters the fluidized bed furnace from a high-pressure air inlet at the bottom through a pressurized circulating fan, the falling materials are preheated in a preheating zone, the mixed gas is divided by a grate plate to push the dried garbage entering from a garbage inlet to rise, and the dried garbage is mixed with high-temperature slag particles entering from a blast furnace slag inlet to be ignited to form a stable combustion zone, the generated high-temperature flue gas flows out of the fluidized bed furnace from a high-temperature flue gas outlet and enters a high-temperature dust remover together with hot air after heat exchange with a revolving cup granulating device, and blast furnace slag and a small amount of dust after full heat exchange are discharged from;
4) high-temperature flue gas and high-temperature air generated by the rotary cup granulation device are dedusted by a high-temperature deduster and then enter a waste heat boiler to generate steam, the steam enters a generator set to generate power, discharged low-temperature flue gas is used as a power source and a heat exchange medium and enters a fluidized bed from the bottom through a pressurized circulating fan, a diffusing chimney is added before the low-temperature flue gas enters the pressurized circulating fan, and the redundant flue gas is diffused to ensure the stable operation of a flue gas system.
2. The method for treating household garbage by using ironmaking waste heat according to claim 1, characterized in that the blast furnace produced in the step 1) has a temperature of 1400 ℃ to 1600 ℃.
3. The method for treating household garbage by using ironmaking waste heat according to claim 1, wherein the blast furnace slag is crushed into slag particles with the diameter of 3-10 mm by the rotor granulating device in the step 1), and 50000-100000 Nm is introduced into a blower in the granulating process3H high pressure air; and the blast furnace slag particles with the temperature of 600-1000 ℃ cooled by the revolving cup granulation device enter the fluidized furnace from the top of the fluidized furnace.
4. The method for treating household garbage by using ironmaking waste heat according to claim 1, characterized in that the low-temperature flue gas in the step 2) is flue gas at 300-350 ℃.
5. The method for treating domestic garbage by using ironmaking waste heat according to claim 1, wherein the moisture content of the garbage dried in step 2) is less than 5%.
6. The method for treating household garbage by using ironmaking waste heat according to claim 1, wherein the high-temperature flue gas in the step 3) is flue gas at 1000-1200 ℃.
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| CN114369691A (en) * | 2022-01-04 | 2022-04-19 | 中冶南方工程技术有限公司 | Urban solid waste and iron making cooperative system and method based on blast furnace slag waste heat utilization |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271074A (en) * | 1994-03-10 | 2000-10-25 | 株式会社荏原制作所 | Method and device for fluidized bed vaporization and smelting burning |
| JP3548994B2 (en) * | 1999-12-28 | 2004-08-04 | 川崎重工業株式会社 | Control method and apparatus for gasification melting processing plant |
| CN101402885A (en) * | 2008-11-14 | 2009-04-08 | 昆明理工大学 | Method for gasifying inflammable solid waste and producing liquid fuel with high-temperature metallurgy liquid slag |
| CN101660014A (en) * | 2009-09-24 | 2010-03-03 | 中钢集团鞍山热能研究院有限公司 | Molten blast furnace slag sensible heat recovery method and device |
| CN101786809A (en) * | 2009-12-31 | 2010-07-28 | 安徽海螺建材设计研究院 | Garbage disposal system used in cement dry kiln production and disposal method thereof |
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102851415A (en) * | 2012-09-24 | 2013-01-02 | 四川环能德美科技股份有限公司 | Recycling system of blast furnace slag heat |
| CN104344689A (en) * | 2014-10-16 | 2015-02-11 | 史金麟 | Method for heating domestic wastes by hot air to evaporate moisture and drying device of method |
| CN105258113A (en) * | 2015-10-26 | 2016-01-20 | 隋恒睿 | Low-heating-value liquid and solid fluidized bed boiler and combustion technology |
| CN109282661A (en) * | 2018-09-04 | 2019-01-29 | 鞍钢股份有限公司 | Method for treating household garbage by hot blast furnace slag |
| CN208998082U (en) * | 2018-10-10 | 2019-06-18 | 永清环保股份有限公司 | A kind of domestic garbage pyrolysis gasification process system and electricity generation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060157899A1 (en) * | 2005-01-15 | 2006-07-20 | Lew Holdings, Llc | Single vessel blast furnace and steel making/gasifying apparatus and process |
-
2019
- 2019-10-28 CN CN201911031243.0A patent/CN111043867B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271074A (en) * | 1994-03-10 | 2000-10-25 | 株式会社荏原制作所 | Method and device for fluidized bed vaporization and smelting burning |
| JP3548994B2 (en) * | 1999-12-28 | 2004-08-04 | 川崎重工業株式会社 | Control method and apparatus for gasification melting processing plant |
| CN101402885A (en) * | 2008-11-14 | 2009-04-08 | 昆明理工大学 | Method for gasifying inflammable solid waste and producing liquid fuel with high-temperature metallurgy liquid slag |
| CN101660014A (en) * | 2009-09-24 | 2010-03-03 | 中钢集团鞍山热能研究院有限公司 | Molten blast furnace slag sensible heat recovery method and device |
| CN101786809A (en) * | 2009-12-31 | 2010-07-28 | 安徽海螺建材设计研究院 | Garbage disposal system used in cement dry kiln production and disposal method thereof |
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102851415A (en) * | 2012-09-24 | 2013-01-02 | 四川环能德美科技股份有限公司 | Recycling system of blast furnace slag heat |
| CN104344689A (en) * | 2014-10-16 | 2015-02-11 | 史金麟 | Method for heating domestic wastes by hot air to evaporate moisture and drying device of method |
| CN105258113A (en) * | 2015-10-26 | 2016-01-20 | 隋恒睿 | Low-heating-value liquid and solid fluidized bed boiler and combustion technology |
| CN109282661A (en) * | 2018-09-04 | 2019-01-29 | 鞍钢股份有限公司 | Method for treating household garbage by hot blast furnace slag |
| CN208998082U (en) * | 2018-10-10 | 2019-06-18 | 永清环保股份有限公司 | A kind of domestic garbage pyrolysis gasification process system and electricity generation system |
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