CN111471503A - Coal-fired power plant co-processing domestic waste derived fuel processing system - Google Patents
Coal-fired power plant co-processing domestic waste derived fuel processing system Download PDFInfo
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- CN111471503A CN111471503A CN202010196187.2A CN202010196187A CN111471503A CN 111471503 A CN111471503 A CN 111471503A CN 202010196187 A CN202010196187 A CN 202010196187A CN 111471503 A CN111471503 A CN 111471503A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses a coal-fired power plant cooperative disposal domestic waste derived fuel treatment system, which comprises a domestic waste storage yard, a waste derived fuel preparation unit, a boiler of a coal-fired power plant and a denitration reactor, the electric dust remover, the desulfurization system, activated carbon injection device and chimney, domestic waste is sent into rubbish derived fuel preparation unit by the domestic waste storage yard, and send into the feed inlet of coal fired power plant boiler after rubbish derived fuel preparation unit handles, the exhanst gas outlet of boiler and denitration reactor's air inlet intercommunication, denitration reactor's gas vent passes through the air inlet intercommunication of pipeline with the electric dust remover, the gas vent of electric dust remover passes through the air inlet intercommunication of pipeline with the desulfurization system, the gas vent of desulfurization system sends into the chimney with waste gas through the pipeline, activated carbon injection device sets up on the pipeline between the air vent of electric dust remover and desulfurization system's air inlet. Through effective cooperation with a coal-fired power plant, harmless treatment of domestic garbage can be realized. The method utilizes the existing equipment and has low cost.
Description
Technical Field
The invention relates to the field of solid waste treatment, in particular to a domestic waste derived fuel treatment system for coal-fired power plants.
Background
With the continuous acceleration of the urbanization process in China, the problem of domestic garbage disposal is increasingly severe. The annual domestic garbage yield in China is about 4 hundred million tons at present, and the annual domestic garbage yield is increased by 8 percent. Since the domestic garbage is disposed in landfill mode in early city development, many cities face the urgent situation of 'refuse surrounding city'. The incineration method for disposing the household garbage is the technology with the most advantages in the aspects of reduction, recycling and harmless disposal, and the national requirement that the incineration proportion of the household garbage is more than 50 percent in 2020.
The construction of the waste incineration power station is a common method for disposing domestic waste by a current incineration method, the waste incineration power station has the problems of large construction investment, high operation cost, low efficiency and high difficulty in flue gas purification, if the domestic waste can be cooperatively disposed by a coal-fired power plant, the construction and operation costs can be greatly reduced through effective cooperation, and a high-energy-efficiency power generation and heat supply system and a high-standard environment-friendly treatment system are utilized to respectively realize reclamation and harmlessness. At the present stage, the technology of using the incineration of the domestic garbage for a coal-fired power plant does not appear.
Disclosure of Invention
The invention aims to provide a coal-fired power plant cooperative treatment domestic garbage derived fuel treatment system, and aims to solve the technical problems of difficult domestic garbage treatment, low domestic garbage utilization rate and great garbage incineration pollution at the present stage.
In order to achieve the purpose, the invention adopts the following technical scheme: the invention provides a coal-fired power plant co-processing household garbage derived fuel processing system, which comprises a household garbage storage yard, a garbage derived fuel preparation unit, a boiler of a coal-fired power plant, a denitration reactor, an electric dust remover, a desulfurization system, an active carbon injection device and a chimney, wherein the household garbage is sent into the garbage derived fuel preparation unit from the household garbage storage yard, processed by the garbage derived fuel preparation unit and then sent into a feed inlet of the boiler of the coal-fired power plant, a flue gas outlet of the boiler is communicated with a gas inlet of the denitration reactor, a gas outlet of the denitration reactor is communicated with a gas inlet of the electric dust remover through a pipeline, a gas outlet of the electric dust remover is communicated with a gas inlet of the desulfurization system through a pipeline, and a gas outlet of the desulfurization, the active carbon injection device is arranged on a pipeline between an exhaust port of the electric dust collector and an air inlet of the desulfurization system.
Further, before the household garbage is sent to the garbage derived fuel preparation unit, combustible waste with high calorific value needs to be screened out.
Further, the processing of the refuse derived fuel preparation unit comprises the following steps:
crushing and drying the fed combustible waste with high calorific value;
step two, adding an additive;
and step three, compressing and forming to prepare the refuse derived fuel particles.
Further, in the step one, after drying, the moisture in the combustible waste with high heat value is reduced to 15-25%.
Further, in the second step, the additive is CaO and Ca (OH)2、CaCO3One or more of them.
Furthermore, the particle size of the refuse derived fuel is 5-50mm in diameter and 20-100mm in length.
Furthermore, the blending proportion of the refuse derived fuel particles in the coal required by the boiler of the coal-fired power plant is 0.5-20%.
Further, the capacity of the unit of the coal-fired power plant is one of 30MW, 50MW, 100MW, 150MW, 200MW, 300MW, 350MW, 500MW, 600MW, 660MW and 1000 MW; the boiler type is one of a pulverized coal furnace, a circulating fluidized bed boiler, and a W flame furnace.
Further, the denitration reactor is one or more of SNCR and SCR.
Furthermore, the daily treatment capacity of the household garbage is at least 500 tons.
Further, the desulfurization system is one or more of dry desulfurization, semi-dry desulfurization and wet desulfurization.
The invention has the beneficial effects that:
the invention provides a coal-fired power plant cooperative disposal household garbage derived fuel processing system, which is characterized in that household garbage is crushed, dried, added with an additive and compressed and molded to prepare garbage derived fuel. Then the mixture is conveyed into a boiler of a coal-fired power plant and is co-combusted with coal. The flue gas after burning is purified by a denitration system, a dedusting system, an active carbon injection device and a desulfurization system, and then is discharged through a chimney.
And 2, mixing domestic garbage derived fuel into the feeding material of the coal-fired power plant, and treating waste water, waste gas and waste residues by using the existing environmental protection facilities of the coal-fired power plant, so that harmless treatment of the domestic garbage can be realized.
3, the method utilizes the existing equipment, has low cost, and has important significance for solving the existing domestic garbage disposal problem.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Reference numerals: the method comprises the following steps of 1-a household garbage storage yard, 2-a garbage derived fuel preparation unit, 3-a boiler, 4-a denitration reactor, 5-an electric dust remover, 6-an active carbon injection device, 7-a desulfurization system and 8-a chimney.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and illustrating the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
Examples
As shown in figure 1, a process for cooperatively disposing domestic garbage derived fuel in a coal-fired power plant relates to the field of domestic garbage disposal. Specifically, the daily treatment capacity of the treatment system for the domestic waste derived fuel cooperatively treated by the coal-fired power plant is at least 500 tons, and by mixing the domestic waste derived fuel into the feeding material of the coal-fired power plant and utilizing the existing environmental protection facilities of the coal-fired power plant to treat the waste water, the waste gas and the waste residues, the harmless treatment of the domestic waste can be realized.
The system comprises a household garbage storage yard 1, a garbage derived fuel preparation unit 2, a boiler 3 of a coal-fired power plant, a denitration reactor 4, an electric dust remover 5, a desulfurization system 7, an active carbon injection device 6 for removing dioxin in flue gas and a chimney 8. Wherein, the desulfurization system 7 is one or more of dry desulfurization, semi-dry desulfurization and wet desulfurization.
Before the household garbage is sent into the garbage derived fuel preparation unit 2, combustible waste with high calorific value needs to be screened out. The household garbage is sent into a garbage derived fuel preparation unit 2 from a household garbage storage yard 1, is treated by the garbage derived fuel preparation unit 2 and then is sent into a feed inlet of a boiler 3 of a coal-fired power plant, and the conveying of the garbage derived fuel to the boiler 3 can be pneumatic conveying or belt conveying. The mixing proportion of the refuse derived fuel particles in the fire coal required by the boiler 3 of the coal-fired power plant is 0.5-20%. The unit capacity of the coal-fired power plant is one of 30MW, 50MW, 100MW, 150MW, 200MW, 300MW, 350MW, 500MW, 600MW, 660MW and 1000 MW; the boiler 3 is one of a pulverized coal furnace, a circulating fluidized bed boiler 3, and a W flame furnace. Wherein, the denitration reactor 4 can remove nitrogen oxides, and can be one or more of SNCR and SCR.
The exhanst gas outlet of boiler 3 communicates with the air inlet of denitration reactor 4, and the gas vent of denitration reactor 4 passes through the air inlet intercommunication of pipeline and electrostatic precipitator 5, and the gas vent of electrostatic precipitator 5 passes through the air inlet intercommunication of pipeline and desulfurization system 7, and desulfurization system 7's gas vent will take off oxysulfide's waste gas through the pipeline and send into chimney 8, finally discharges through chimney 8. The activated carbon injection device 6 is arranged on a pipeline between the exhaust port of the electric dust collector 5 and the air inlet of the desulfurization system 7.
Specifically, the treatment of the refuse derived fuel preparation unit 2 comprises the following steps:
crushing and drying the fed combustible waste with high calorific value; after drying, the water content in the combustible waste with high calorific value is reduced to 15-25%.
Step two, adding an additive; the additive is calcium compound, such as CaO and CaOH2、CaCO3One or more of them.
And step three, compressing and forming to prepare the refuse derived fuel particles with the diameter of 5-50mm and the length of 20-100 mm.
Through high cooperation, the existing facilities of the coal-fired power plant are utilized, so that the cost of disposing the household garbage can be greatly reduced.
Example 2, the capacity of the coal-fired unit is 300MW, the boiler 3 is a circulating fluidized bed boiler 3 with subcritical parameters, the maximum continuous evaporation capacity of the boiler 3 is 1025t/h, and the combustion working temperature is 830-900-oC, the daily coal consumption is 3500 tons/day. The blending combustion amount of the domestic garbage derived fuel RDF is 5 percent of the coal consumption amount, and the blending combustion amount is 175 tons/day. The treatment capacity of the household garbage is 500 tons/day.
Example 3
The capacity of the coal-fired unit is 350MW, and the boiler 3 is a W flame furnace. The maximum continuous evaporation capacity of the boiler 3 is 1100t/h, and the combustion working temperature is 1200oC. The daily coal consumption is 4000 tons/day. The blending combustion amount of the domestic garbage derived fuel RDF is 15% of the coal consumption, and the blending combustion amount is 600 tons/day. The treatment capacity of the household garbage is 1000 tons/day.
The coal-fired power plant co-processing domestic waste derived fuel processing system provided by the invention can be used for efficiently processing high-calorific-value combustible waste in domestic waste by using the existing equipment, changes waste into valuable, has low cost, has important significance for solving the problem of processing the existing domestic waste, and has high popularization value.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.
Claims (10)
1. Coal fired power plant is in coordination with handling domestic waste derived fuel processing system, its characterized in that: the device comprises a household garbage storage yard (1), a garbage derived fuel preparation unit (2), a boiler (3) of a coal-fired power plant, a denitration reactor (4), an electric dust remover (5), a desulfurization system (7), an active carbon injection device (6) and a chimney (8), wherein the household garbage is sent into the garbage derived fuel preparation unit (2) from the household garbage storage yard (1) and is sent into a feed inlet of the boiler (3) of the coal-fired power plant after being processed by the garbage derived fuel preparation unit (2), a flue gas outlet of the boiler (3) is communicated with an air inlet of the denitration reactor (4), an air outlet of the denitration reactor (4) is communicated with an air inlet of the electric dust remover (5) through a pipeline, an air outlet of the electric dust remover (5) is communicated with an air inlet of the desulfurization system (7) through a pipeline, an air outlet of the desulfurization system (7) sends waste gas into the chimney (8) through a pipeline, and the active carbon injection device (6) is arranged at an air outlet On the pipe between the air inlets.
2. The coal-fired power plant co-disposed domestic waste derived fuel processing system of claim 1, wherein the high calorific value combustible waste needs to be screened before the domestic waste is fed into the waste derived fuel preparation unit (2).
3. The coal fired power plant co-disposed domestic waste fuel treatment system according to claim 2, wherein said waste fuel preparation unit (2) treatment comprises the steps of:
crushing and drying the fed combustible waste with high calorific value;
step two, adding an additive;
and step three, compressing and forming to prepare the refuse derived fuel particles.
4. The coal fired power plant co-disposed domestic waste derived fuel processing system of claim 3, wherein in step one, after drying, the moisture content in the high calorific value combustible waste is reduced to 15-25%.
5. The coal fired power plant co-disposed domestic waste derived fuel processing system of claim 3, wherein in step two, the additive is CaO, Ca (OH)2、CaCO3One or more of them.
6. The coal fired power plant co-disposed domestic waste derived fuel processing system of claim 3, wherein the refuse derived fuel particle size is 5-50mm in diameter and 20-100mm in length.
7. The coal-fired power plant co-disposed domestic waste derived fuel processing system of claim 3, wherein the blending proportion of the refuse derived fuel particles to the coal-fired required by the coal-fired power plant boiler (3) is 0.5% -20%.
8. The coal-fired power plant co-disposed domestic waste derived fuel processing system of claim 1, wherein the coal-fired power plant unit capacity is one of 30MW, 50MW, 100MW, 150MW, 200MW, 300MW, 350MW, 500MW, 600MW, 660MW, 1000 MW; the boiler (3) is one of a pulverized coal furnace, a circulating fluidized bed boiler and a W flame furnace.
9. The coal-fired power plant co-disposed domestic waste derived fuel processing system of claim 1, characterized in that, denitration reactor (4) is one or more of SNCR, SCR.
10. The coal fired power plant co-disposed of domestic waste derived fuel processing system of claim 1, wherein the daily domestic waste throughput is at least 500 tons.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010196187.2A CN111471503A (en) | 2020-03-19 | 2020-03-19 | Coal-fired power plant co-processing domestic waste derived fuel processing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010196187.2A CN111471503A (en) | 2020-03-19 | 2020-03-19 | Coal-fired power plant co-processing domestic waste derived fuel processing system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269418A (en) * | 2011-05-18 | 2011-12-07 | 桑洪忠 | Method for utilizing papermaking sludge to realize desulfuration, denitrification and coal conservation of circulating fluid bed |
| CN108278596A (en) * | 2018-02-02 | 2018-07-13 | 中国华能集团清洁能源技术研究院有限公司 | A kind of CFB boiler system and its operation method using garbage derivatived fuel |
| CN108413383A (en) * | 2018-03-06 | 2018-08-17 | 西安交通大学 | A kind of coal-burning boiler biomass coupling combustion system |
| CN109289516A (en) * | 2018-12-06 | 2019-02-01 | 刘鹏 | A kind of power plant's flue gas purification system |
| CN110715316A (en) * | 2018-07-12 | 2020-01-21 | 格林奔科（北京）贸易有限公司 | Method for coupling heterogeneous fuel direct-combustion power generation of large coal-fired boiler |
-
2020
- 2020-03-19 CN CN202010196187.2A patent/CN111471503A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269418A (en) * | 2011-05-18 | 2011-12-07 | 桑洪忠 | Method for utilizing papermaking sludge to realize desulfuration, denitrification and coal conservation of circulating fluid bed |
| CN108278596A (en) * | 2018-02-02 | 2018-07-13 | 中国华能集团清洁能源技术研究院有限公司 | A kind of CFB boiler system and its operation method using garbage derivatived fuel |
| CN108413383A (en) * | 2018-03-06 | 2018-08-17 | 西安交通大学 | A kind of coal-burning boiler biomass coupling combustion system |
| CN110715316A (en) * | 2018-07-12 | 2020-01-21 | 格林奔科（北京）贸易有限公司 | Method for coupling heterogeneous fuel direct-combustion power generation of large coal-fired boiler |
| CN109289516A (en) * | 2018-12-06 | 2019-02-01 | 刘鹏 | A kind of power plant's flue gas purification system |
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Application publication date: 20200731 |
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