CN105627320A - Mechanical grate type garbage gasification and incineration furnace and double-boiler power generation system - Google Patents
Mechanical grate type garbage gasification and incineration furnace and double-boiler power generation system Download PDFInfo
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- CN105627320A CN105627320A CN201511033826.9A CN201511033826A CN105627320A CN 105627320 A CN105627320 A CN 105627320A CN 201511033826 A CN201511033826 A CN 201511033826A CN 105627320 A CN105627320 A CN 105627320A
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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
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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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
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
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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
- 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
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a mechanical grate type garbage gasification and incineration furnace and double-boiler power generation system with relatively small heat conversion efficiency loss and higher heat recovery efficiency. The system comprises a gasification and incineration furnace, a boiler system, a circulating air supply system and a power generation system, wherein the gasification and incineration furnace comprises a gasifier and an incinerator, which can be sealed or communicated; the boiler system comprises boiler bodies a and b; the boiler body a comprises a cyclone combustion chamber and furnace chambers a and b; the boiler body b comprises a furnace chamber d and a cyclone dust chamber; water cooling walls are arranged in the cyclone combustion chamber and the cyclone dust chamber; a superheater is arranged in the furnace chamber a; an evaporator is arranged in the furnace chamber b; a superheater and an evaporator are arranged in the furnace chamber d; steam pockets are arranged at the top ends of the two boiler bodies; a smoke inlet of the cyclone combustion chamber is connected with a smoke outlet of the gasifier; a smoke inlet of the cyclone dust chamber is connected with a smoke outlet of the incinerator; the power generation system comprises a steam inlet pipe, a steam turbine and a power generator; and the steam inlet pipe is connected with the superheaters a and b and the steam turbine.
Description
Technical field
The invention belongs to solid waste incineration processing technology field, particularly relate to stoker fired grate formula refuse gasification incinerator and double boiler electricity generation system thereof.
Background technology
Existing technology of garbage disposal mainly has burning, sanitary landfills, compost, waste recovery etc. The advantages such as in garbage disposal routine techniques, it is obvious that burning disposal has reduced training, and innoxious thoroughly occupation of land amount is little, and waste heat energy is obtained by, and secondary pollution is few, meet the strategic requirement of China's sustainable development. But along with domestic and international improving constantly environmental requirement, how to strengthen the control to secondary pollution particularly important. Therefore, refuse pyrolysis gasification burning technology is by the road shifting industrial applications gradually onto, what primarily now adopt especially for domestic rubbish is all kinds of incineration technologies, and the technological innovation bringing domestic garbage disposal industry is regenerated by the industrialization widely of gasification burning technology.
For many years, China's scientific research to the gasification burning technology such as biomass, rubbish, it is in progress a lot of, the basic research of laboratory is a lot, also has applied research, such as: rotary kiln type, the destructive gasifying of vertical and fluidized bed type or temperature gasification and high fusion technology etc. But Technique Popularizing application is upper or there is a definite limitation, and raw material type, garbage treatment quantity, secondary pollution control and economic benefit etc. are principal elements.
In existing burning process and equipment, fire grate type incinerator is various informative, its application accounts for more than the 80% of the whole world waste incineration total market size, wherein has and adopts mechanical type backstepping fire grate, forwards fire grate or combined fire grate in body of heater, also has the employing fire grate such as chain-plate type and drum-type. In boiler plant, it is a lot of that boiler reclaims heat methods, technology maturation; Heating style is also many, such as: solar energy, smelting furnace waste heat, coal furnace, fluid bed, the fixing thermal source such as bed, rotary kiln, utilizes boiler to reclaim heat, be used for generating electricity, heat supply, heating etc.
In sum, typical gasification burning and boiler plant technology maturation, it is respectively arranged with himself advantage, but in China's practical application, needs the problem and shortage solved:
1., for characteristics such as China's house refuse water content height, complicated components, the technology of moving hearth uses, and needs emphasis to consider the conveying capacity of rubbish. In flue gas after simultaneously burning, fly ash content is higher, and collecting ash is heavier, and the deashing repair and maintenance cycle is short.
2. being on the increase along with refuse production, sanitary fill is mountain such as, and garbage treatment quantity must be effectively improved, could meeting the market requirement.
3., in the face of strict pollutant emission requirement, secondary pollution controls the key problem being technically need to solve.
4., in order to effectively increase economic efficiency, in rubbish heat treatment process, the organic efficiency of heat needs to improve. Existing rubbish heat treatment technics generally adopts the high-temperature flue gas heat after boiler recovery waste incineration, produce steam and shift steam turbine power generation onto, whole transition heat efficiency losses is relatively big, processes identical quantity of refuse, relatively reduces thermal losses and raising heat exchanger effectiveness just can improve the thermal efficiency.
Existing incinerator such as following two patent of invention: multiple row sectional drive combined type domestic garbage incinerator (ZL200710092508.9) and an open question in two-stage garbage incinerator (ZL201010268376.2): rubbish heat treatment mode is relatively backward, simply dry-burn-burn, the process of solid combustion release heat; In stove, thermal chemical reaction is based on oxidation reaction, and reduction reaction is assisted, and is easily generated secondary pollution; When rubbish burns in stove, crossing oxygen quotient big, First air, secondary wind infeed amount are big, and in flue gas, dust content is higher, affect bigger on heat reclaiming system and smoke processing system, it is easy to dust stratification, and exhaust gas volumn is relatively big, reduces thermal conversion efficiency; The gasification furnace not being separately provided and incinerator, gradation can only process rubbish, it is impossible to realizing large-scale rubbish continuous gasification burning disposal, garbage treatment quantity is less.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of stoker fired grate formula refuse gasification incinerator and double boiler electricity generation system thereof. Its rubbish conveying capacity is higher, and garbage treatment quantity is bigger, it is possible to reducing thermal losses and improve heat exchanger effectiveness, the organic efficiency of heat is higher, and can efficiently reduce pollutant discharge amount.
The object of the present invention is achieved like this:
A kind of stoker fired grate formula refuse gasification incinerator and double boiler electricity generation system thereof, including incinerator, steam generator system, circulation air feed system, electricity generation system,
Described incinerator includes grate, and the feed hopper set gradually along feedstock direction on grate, gasification furnace and incinerator, the rear of gasification furnace is the cinder notch that falls of gasification furnace, incinerator is positioned at gasification furnace and falls the front lower place of cinder notch, the rear of incinerator is the slag notch of incinerator, described grate is provided with garbage pusher device, described garbage pusher device is positioned at the lower section of feed hopper, for the rubbish in feed hopper is pushed in gasification furnace, the lower section of gasification furnace moving hearth and incinerator moving hearth be respectively arranged below with at least one air compartment being independently arranged, described feed hopper, windrow seal section it is provided with between gasification furnace, grate part between described gasification furnace and incinerator leaves transition fall slag section, the described transition slag section that falls is provided with residue pusher, for the rubbish fallen in gasification furnace residue is pushed in incinerator, described gasification furnace, incinerator include furnace shell, moving hearth respectively, and the forward and backward side of described gasification furnace seals respectively through windrow seal section, the transition slag section that falls, and described transition falls slag section isolation gasification furnace, incinerator, makes gasification furnace, incinerator separate, described gasification furnace, incinerator are respectively in arching upward shape, the face arch of described gasification furnace, rear arch are respectively provided with secondary for air port, the vault of described gasification furnace arranges the first exhanst gas outlet, the vault of described incinerator arranges the second exhanst gas outlet, and described gasification furnace, incinerator are respectively equipped with igniting combustion supporting hole,
Described steam generator system includes boiler body a, boiler body b, described boiler body a has cyclone combustion chamber, furnace chamber a, furnace chamber b, the lower end of described cyclone combustion chamber arranges smoke inlet, the smoke inlet of cyclone combustion chamber and the connection of the first exhanst gas outlet, cyclone combustion chamber upper end is the 3rd exhanst gas outlet, described cyclone combustion chamber is provided with some combustion airs for air port, described some combustion airs are positioned at smoke inlet for air port, between 3rd exhanst gas outlet, 3rd exhanst gas outlet of cyclone combustion chamber upper end connects with the upper end of furnace chamber a, described furnace chamber a, the lower end connection of furnace chamber b, the upper end of described furnace chamber b arranges waste gas outlet, described cyclone firing is indoor circumferentially arranged with ringwise water-cooling wall a, it is provided with superheater a in described furnace chamber a, vaporizer a it is provided with in furnace chamber b, the top of boiler body a arranges drum a, described cyclone combustion chamber, furnace chamber a, furnace chamber b is respectively positioned on below drum a, described drum a is provided with soda pop import, drum a passes through water separator separation steam water interface, the outlet of drum a connects water-cooling wall a respectively through pipeline, the water inlet of vaporizer a, for exporting the isolated water of water separator, described water-cooling wall a, the venthole of vaporizer a connects the air intake of drum a respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum a connects the air intake of superheater a by pipeline, for by the high-temperature steam input superheater a of backflow, the venthole output superheated steam of described superheater a,
Described boiler body b has cyclone dust removal room, furnace chamber d, the lower end of described cyclone dust extractor connects with the second exhanst gas outlet, the upper end of cyclone dust removal room connects with the upper end of furnace chamber d, described cyclone dust removal is indoor circumferentially arranged with ringwise water-cooling wall b, it is provided with superheater b in described furnace chamber d, vaporizer b, described superheater b is positioned at the top of vaporizer b, the top of boiler body b arranges drum b, described cyclone dust removal room, furnace chamber d is respectively positioned on below drum b, described drum b is provided with soda pop import, drum b passes through water separator separation steam water interface, the outlet of drum b is by connecting water-cooling wall b respectively through pipeline, the water inlet of vaporizer b, for exporting the isolated water of water separator, described water-cooling wall b, the venthole of vaporizer b connects the air intake of drum b respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum b connects the air intake of superheater b by pipeline, for by the high-temperature steam input superheater b of backflow, the venthole output superheated steam of described superheater b,
Described circulation air feed system includes the first blower fan, second blower fan, the inlet end of described first blower fan is connected with the lower end of furnace chamber d by pipeline, the outlet side of described first blower fan is connected with furnace chamber b by pipeline, the air inlet of described second blower fan and atmosphere, the gas outlet of described second blower fan connects the first manifold respectively, the house steward of the second manifold, the arm of described first manifold connects for air port with each air compartment below gasification furnace moving hearth and each secondary on gasification furnace respectively, the arm of described second manifold connects for air port with some combustion airs of each air compartment below incinerator moving hearth and cyclone combustion chamber respectively,
Described electricity generation system includes steam input pipe, steam turbine and the electromotor being connected with turbine power, described steam input pipe connects described superheater a respectively through pipeline, the venthole of superheater b, the outfan of steam input pipe connects the steam input of steam turbine, the steam output end of described steam turbine is sequentially connected with condenser by pipeline, water pump, low pressure vapor heater, oxygen-eliminating device, booster water pump, high pressure steam water heater, the input that is heated of described low pressure vapor heater is connected with water pump, being connected with oxygen-eliminating device by hot output terminal of low pressure vapor heater, the input of oxygen-eliminating device is provided with moisturizing pipeline, the input that is heated of described high pressure steam water heater is connected with booster water pump, the hot output terminal that is subject to of high pressure steam water heater connects drum a by pipeline, the soda pop import of drum b, described steam turbine is provided with the first steam and takes pipe, second steam takes pipe and takes steam to the steam output end of steam turbine respectively, described first steam takes the heating input of the outfan connection high pressure steam water heater of pipe, described second steam takes the heating input of the outfan connection low pressure vapor heater of pipe.
In order to make full use of the waste heat that steam turbine has not utilized, also include high pressure vapour gas heat exchanger, low-pressure steam gas heat exchanger, the heated passage of described high pressure vapour gas heat exchanger is connected to the first steam by pipeline and takes between pipe, oxygen-eliminating device input, the heated passage of described low-pressure steam gas heat exchanger is connected to the second steam by pipeline and takes between pipe, oxygen-eliminating device input, low-pressure steam gas heat exchanger add the passage of heat, high pressure vapour gas heat exchanger heating Tandem on the house steward of the first manifold, described high pressure vapour gas heat exchanger is positioned at the downstream of low-pressure steam gas heat exchanger.
In order to the furnace chamber b flue gas discharged being carried out further heat recovery, improve heat recovery efficiency, it is preferable that described boiler body a has furnace chamber c, and the upper end of described furnace chamber c connects with the waste gas outlet of furnace chamber b upper end, and the lower end of furnace chamber c arranges Waste gas outlet.
Further, being provided with air preheater in described furnace chamber c, the outlet side of described second blower fan connects the air inlet of air preheater, and the gas outlet of air preheater connects the house steward of the first manifold, the second manifold.
Further, being provided with economizer in described furnace chamber c, the water inlet of described economizer connects with the outlet of booster water pump, and the outlet of described economizer is respectively through the soda pop inlet communication of pipeline with drum a, drum b.
In order to the furnace chamber c flue gas discharged is carried out harmless treatment, further, the Waste gas outlet of described furnace chamber c connects flue gas purification system, aeration tower that described flue gas purification system includes being sequentially connected in series along discharge directions, cleaner unit, air-introduced machine, chimney.
In order to discharge the waste residue that in furnace chamber a, furnace chamber b, flue gas deposition produces, and prevent waste residue effusion from producing to pollute, it is preferable that described furnace chamber a, furnace chamber b are connected with common slag notch, and this common slag notch connects with the burner hearth of gasification furnace.
In order to discharge the waste residue that cyclone firing indoor flue gas deposition produces, and prevent waste residue effusion from producing to pollute, it is preferable that the lower end of described cyclone combustion chamber is provided with the taper slag notch that radius from top to bottom diminishes, and this taper slag notch connects with the burner hearth of gasification furnace.
High-temperature flue gas in order to produce after making burning is easily drained, and is beneficial to the installation of pipeline, it is preferable that described smoke inlet, the 3rd exhanst gas outlet are positioned at the opposition side of cyclone combustion chamber circumferential wall; Described 3rd exhanst gas outlet is radially or tangentially arranged along cyclone combustion chamber circumferential wall.
In order to prevent altering wind between gasification furnace, incinerator, it is preferable that described transition falls and is provided with isolating door to be opened/closed in slag section, described isolating door is for cutting off gasification furnace, incinerator.
Owing to have employed technique scheme, there is advantages that
The gasification furnace of incinerator, incinerator are provided separately, the vault of gasification furnace arranges the first exhanst gas outlet, the vault of incinerator arranges the second exhanst gas outlet, it is beneficial to the difference according to flue gas quality and processes flue gas respectively, be conducive to flue gas ash removal simultaneously, can providing the flue gas of more high-quality, the utilization rate making flue gas is higher, and the waste residue of discharge is less.
First blower fan extracts from the furnace chamber d waste gas discharged, and is introduced in furnace chamber b, makes full use of the boiler body b waste heat not utilized, reach, also by cyclone dust removal room, the purpose that dedusting prevents flue dust from overflowing; Second blower fan is utilized from the furnace chamber c waste gas discharged by air preheater, makes full use of the boiler body a waste heat not utilized. The wind that second blower fan bloats provides First air, secondary wind by the first manifold for gasification furnace, making rubbish in gasification furnace produce gasification, gasification furnace is contained within the flue gas of a certain amount of synthesis gas, discharges from the first exhanst gas outlet, entering cyclone combustion chamber processing links, cyclone combustion chamber provides high-temperature flue gas. The wind that second blower fan bloats provides First air by the second manifold for incinerator, and provides combustion air for cyclone combustion chamber, makes incinerator residue fully burn, and the synthesis flue gas of cyclone firing indoor fully burns. The stoker fired grate formula refuse gasification incinerator garbage treatment quantity of this structure is big, what the rubbish bed of material can experience dry, gasification and residue on stoker fired grate burns the stage, adapt to the characteristics such as China's house refuse water content height, complicated component, improve the energy conversion efficiency in garbage processing procedure and reduce pollutant discharge amount in flue gas, effectively prevent secondary pollution, and it is capable of large-scale rubbish continuous gasification burning disposal, ensure that refuse gasification burns effect and lime-ash clinker ignition loss, relatively reduce thermal losses and improve heat exchanger effectiveness, improve the thermal efficiency.
This steam generator system have employed the structure of two boilers, fully the synthesis flue gas of burning the first exhanst gas outlet release, utilizes the heat that smoke combustion discharges, and makes full use of the heat that the second exhanst gas outlet discharges, and hot slippages is less, and heat recovery efficiency is higher. Synthesis gas is more abundant in cyclone firing Indoor Combustion, and the temperature that burning produces is higher, is arranged on cyclone combustion chamber by the water-cooling wall a of annular, relatively reduces thermal losses and improve heat exchanger effectiveness. The origin of heat that this steam generator system reclaims is in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas enters cyclone combustion chamber, simultaneously to air-supplied combustion-supporting flammable synthesis gas tangential in cyclone combustion chamber, flue gas sequentially passes through cyclone combustion chamber, furnace chamber a, furnace chamber b, economizer and air preheater. Recycling economizer preheating condensed water, preheating condensed water enters two boilers, condensed water heats in two water-cooling walls and two vaporizers, form saturated vapor and enter two drums, after steam-water separation, saturated vapor enters two superheaters, again be thermally formed superheated steam output, can be used for generating electricity, heat supply, heating etc. Present inventive concept is novel, utilizes cyclone-burning method, decreases fly ash content in flue gas; Syngas combustion temperature is high, and gas residence time is long, and pollutant are effectively decomposed, and reduces pollutant emission, it is achieved that synthesis gas burning disposal after rubbish continuous gasification and heat recovery and utilization.
The steam that steam turbine can not utilized by condenser is all converted to water, and absorb the heat of steam release, the Main Function of oxygen-eliminating device is exactly the oxygen and other gas that remove in boiler feedwater with it, ensure the quality of feedwater, booster water pump can improve hydraulic pressure, it is ensured that to the water supply capacity of water input system, electricity generation system by heating low-grade steam and condensed water by high-grade steam, improve utilization rate of waste heat, reduce thermal losses.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation of cyclone combustion chamber;
Fig. 3 is the schematic top plan view of Fig. 2;
Fig. 4 is the structural representation of electricity generation system;
Fig. 5 is the structural representation of flue gas purification system;
Fig. 6 is the structural representation of incinerator.
Accompanying drawing labelling
1 is incinerator, and 101 is grate, and 102 is feed hopper, 103 is gasification furnace, and 104 is incinerator, and 105 is siege, 106 is garbage pusher device, and 107 is an air compartment, and 108 is windrow seal section, 109 fall slag section for transition, and 110 is residue pusher, and 111 is isolating door, 112 is the first exhanst gas outlet, and 113 is the second exhanst gas outlet, and 114 is igniting combustion supporting hole, 115 supply air port for secondary, and 116 is slag notch, and 117 is the cinder notch that falls;
202 is the first blower fan, and 203 is the second blower fan, and 204 is the first manifold, and 205 is the second manifold;
3 is cyclone combustion chamber, and 301 is combustion chamber ignition combustion-supporting hole, and 302 is taper slag notch, and 303 is smoke inlet, and 304 is the 3rd exhanst gas outlet, and 305 supply air port for combustion air;
4 is boiler body a, and 402 is furnace chamber a, and 403 is furnace chamber b, 404 is furnace chamber c, and 405 is water-cooling wall a, and 406 is superheater a, 407 is vaporizer a, and 408 is drum a, and 418 is economizer, 419 is flue gas purification system, 420 is aeration tower, and 421 is cleaner unit, and 422 is air-introduced machine, 423 is chimney, and 424 is air preheater;
5 is boiler body b, and 501 is furnace chamber d, and 502 is cyclone dust removal room, and 503 is water-cooling wall b, and 504 is superheater b, and 505 is vaporizer b, and 506 is drum b;
6 is electricity generation system, and 601 is steam input pipe, and 602 is steam turbine, 603 is electromotor, and 604 is condenser, and 605 is water pump, 606 is low pressure vapor heater, and 607 is oxygen-eliminating device, and 608 is booster water pump, 609 is high pressure steam water heater, 610 is moisturizing pipeline, and 611 is that the first steam takes pipe, and 612 is that the second steam takes pipe, 613 is high pressure vapour gas heat exchanger, and 614 is low-pressure steam gas heat exchanger.
Detailed description of the invention
Referring to Fig. 1 to Fig. 6, for a kind of preferred embodiment of stoker fired grate formula refuse gasification incinerator and double boiler electricity generation system thereof, including incinerator, steam generator system, circulation air feed system.
Referring to Fig. 6, for stoker fired grate formula refuse gasification incinerator, including grate 101, and the feed hopper 102, gasification furnace 103 and the incinerator 104 that set gradually along feedstock direction on grate 101, the rear of incinerator 104 is the slag notch 116 of incinerator 104, and described incinerator 104 is provided with cinder notch 117, and the slag notch 116 of described incinerator 104 is positioned at incinerator and falls the underface of cinder notch 117, this sealing structure is effective, it is possible to effectively holds and reduces pollutant discharge amount. The carbon-containing part of rubbish is mainly gasified by gasification furnace 103, and discharges flammable gasification flue gas and rubbish residue, and incinerator 104 is substantially carried out the burn processing of carbon residue, and discharges innoxious lime-ash. The siege 105 of gasification furnace 103 and incinerator 104 all adopts the stoker fired grate formula moving hearth 105 that segmentation independently drives, the fire grate of stoker fired grate formula moving hearth 105 is to be forward lapped by moving grate plate and fixed grate plate, collect alternately and form, adjacent many groups moving grate plate is connected by pull bar, adopts a set of driving device to drive. Stoker fired grate formula moving hearth 105 is as the carrier of conveying garbage, and its embodiment can be all types of moving hearths 105, such as chain-plate type, drum-type, multisection type fire grate system etc.
Described grate 101 is provided with garbage pusher device 106, described garbage pusher device 106 is positioned at the lower section of feed hopper 102, for the rubbish in feed hopper 102 is pushed in gasification furnace 103, the lower section of gasification furnace 103 moving hearth 105 and incinerator 104 moving hearth 105 be respectively arranged below with at least one air compartment 107 being independently arranged, in the present embodiment, the fire grate corresponding with an air compartment 107 of gasification furnace 103 first half, driving device, dryer section as gasification furnace 103 siege 105, one time latter half of with gasification furnace 103 fire grate that air compartment 107 is corresponding, driving device is as the gasification section of gasification furnace 103 siege 105. the dryer section of gasification furnace 103 siege 105, gasification section can be respectively adopted 1-2 independent air compartment 107 air feed, it is also possible to be respectively adopted 3-4 independent air compartment 107 air feed. certainly, fire grate, driving device and an air compartment 107 also can not be correspondingly arranged, and better regulate the bed of material on moving hearth 105 and move and air distribution relation. incinerator 104 can adopt 1-4 independent air compartment 107 air feed, burns rear lime-ash and gets rid of from slag notch, enters next step treatment process.
It is provided with windrow seal section 108 between described feed hopper 102, gasification furnace 103, garbage pusher device 106 work enters position and is in windrow seal section 108, garbage raw material is put into from feed hopper 102 and is fallen, garbage pusher device 106 retreats, advancing, pusher forms windrow at windrow seal section 108 back and forth again, makes gasification furnace 103 entrance be in windrow sealing state, strengthen gasification furnace 103 sealing effectiveness, solve garbage pusher device 106 and the easy leakage problem of feed hopper 102. When needing complete prepurging to dispose all rubbish, garbage pusher device 106 forward impelling half stroke again, rubbish is pushed completely in gasification furnace 103, makes gasification furnace 103 entrance lose windrow sealing effectiveness. Grate 101 part between described gasification furnace 103 and incinerator 104 leaves transition fall slag section 109, the described transition slag section 109 that falls is provided with residue pusher 110, for the rubbish residue fallen in gasification furnace 103 is pushed in incinerator 104, transition fall slag section 109 pile up rubbish residue time can be at windrow sealing state, strengthen gasification furnace 103 sealing effectiveness, solve to go here and there between gasification furnace 103, incinerator 104 problem of wind. In the present embodiment, described transition falls and is provided with isolating door 111 to be opened/closed in slag section 109, and described isolating door 111 is for cutting off gasification furnace 103, incinerator 104. At the furnace lifting initial stage or when needing to control to alter wind between gasification furnace 103 and incinerator, close isolating door 111, after the slag section that falls stacks the formation windrow sealing of a certain amount of residue, isolating door 111 can be kept to open, coordinate to use with the residue pusher 110 being arranged below, to realize rubbish continuous gasification burning disposal.
The upper end of described gasification furnace 103, incinerator 104 upper end respectively in arching upward shape, the face arch of described gasification furnace 103 is flat construction, or, the face arch of gasification furnace 103 is that rear end is inclined upwardly structure. The vault of described gasification furnace 103 arranges the first exhanst gas outlet 112, and the vault of described incinerator 104 arranges the second exhanst gas outlet 113, and the arching upward of described gasification furnace 103 upper end, the arching upward of incinerator 104 upper end are respectively equipped with igniting combustion supporting hole 114. Gasification flue gas is got rid of from first exhanst gas outlet the 112, second exhanst gas outlet 113, and gasification furnace 103 furnace cavity is compared with traditional incinerator, relatively reduced; Forward and backward arch and moving hearth 105 relative position diminish, and decrease the space that incinerator takies, and are also easier to insulation, decrease the amount of leakage of heat, be conducive to rubbish fully to gasify. The face arch of described gasification furnace 103, rear arch are respectively provided with secondary for air port 115.
Referring to Fig. 1 to Fig. 3, described steam generator system includes boiler body a4, boiler body b5, described boiler body a4 has cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403, furnace chamber c404, the lower end of described cyclone combustion chamber 3 arranges smoke inlet 303, the smoke inlet 303 of described cyclone combustion chamber 3 is connected with the first exhanst gas outlet 112 of gasification furnace 103 by pipeline, cyclone combustion chamber 3 upper end is the 3rd exhanst gas outlet 304, described smoke inlet 303, 3rd exhanst gas outlet 304 is positioned at the opposition side of cyclone combustion chamber 3 circumferential wall, the top of cyclone combustion chamber 3 arranges combustion chamber ignition combustion-supporting hole 301. in order to discharge from the 3rd exhanst gas outlet 304 after making flue gas, combustion air be sufficiently mixed in cyclone combustion chamber 3, burning, described cyclone combustion chamber 3 is provided with some combustion airs for air port 305, and described some combustion airs supply air port 305 between smoke inlet the 303, the 3rd exhanst gas outlet 304. described smoke inlet the 303, the 3rd exhanst gas outlet 304, combustion air are radially or tangentially arranged along cyclone combustion chamber 3 circumferential wall for air port 305. 3rd exhanst gas outlet 304 of cyclone combustion chamber 3 upper end connects with the upper end of furnace chamber a402, described furnace chamber a402, furnace chamber b403 lower end connection, the upper end of described furnace chamber b403 arranges waste gas outlet, the lower end of described cyclone combustion chamber 3 is provided with the taper slag notch 302 that radius from top to bottom diminishes, and this taper slag notch 302 connects with the burner hearth of gasification furnace 103. described furnace chamber a402, furnace chamber b403 are connected with common slag notch, and this common slag notch connects with the burner hearth of gasification furnace 103. in the present embodiment, this common slag notch and taper slag notch 302 all connect with the afterbody changeover portion of gasification furnace 103 burner hearth.
It is circumferentially with ringwise water-cooling wall a405 along inwall in described cyclone combustion chamber 3, it is provided with superheater a406 in described furnace chamber a402, vaporizer a407 it is provided with in furnace chamber b403, the top of boiler body 4 arranges drum a408, described cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403 is respectively positioned on below drum a408, described drum a408 is provided with soda pop import, for inputting steam water interface, it is provided with water separator in drum a408, for separating steam water interface, the outlet of drum a408 is by connecting water-cooling wall a405 respectively through pipeline, the water inlet of vaporizer a407, for exporting the isolated water of water separator, described water-cooling wall a405, the venthole of vaporizer a407 connects the air intake of drum a408 respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum a408 connects the air intake of superheater a406 by pipeline, for by the high-temperature steam input superheater a406 of backflow, the venthole output superheated steam of described superheater a406.
Described boiler body b5 has cyclone dust removal room 502, furnace chamber d501, the lower end of described cyclone dust extractor connects with the second exhanst gas outlet, the upper end of cyclone dust removal room 502 connects with the upper end of furnace chamber d501, circumferentially arranged with ringwise water-cooling wall b503 in described cyclone dust removal room 502, it is provided with superheater b504 in described furnace chamber d501, vaporizer b505, described superheater b504 is positioned at the top of vaporizer b505, the top of boiler body b5 arranges drum b506, described cyclone dust removal room 502, furnace chamber d501 is respectively positioned on below drum b506, described drum b506 is provided with soda pop import, drum b506 passes through water separator separation steam water interface, the outlet of drum b506 is by connecting water-cooling wall b503 respectively through pipeline, the water inlet of vaporizer b505, for exporting the isolated water of water separator, described water-cooling wall b503, the venthole of vaporizer b505 connects the air intake of drum b506 respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum b506 connects the air intake of superheater b504 by pipeline, for by the high-temperature steam input superheater b504 of backflow, the venthole output superheated steam of described superheater b504, described cyclone dust removal room 502, furnace chamber d501 lower end be provided with common slag notch, the cinder notch 117 that falls of this slag notch and incinerator passes through pipeline communication.
Referring to Fig. 4, described electricity generation system 6 includes steam input pipe 601, steam turbine 602 and the electromotor 603 being connected with steam turbine 602 power, described steam input pipe 601 connects described superheater a respectively through pipeline, the venthole of superheater b, the outfan of steam input pipe 601 connects the steam input of steam turbine 602, the steam output end of described steam turbine 602 is sequentially connected with condenser 604 by pipeline, water pump 605, low pressure vapor heater 606, oxygen-eliminating device 607, booster water pump 608, high pressure steam water heater 609, the input that is heated of described low pressure vapor heater 606 is connected with water pump 605, being connected with oxygen-eliminating device 607 by hot output terminal of low pressure vapor heater 606, the input of oxygen-eliminating device 607 is provided with moisturizing pipeline 610, the input that is heated of described high pressure steam water heater 609 is connected with booster water pump 608, the hot output terminal that is subject to of high pressure steam water heater 609 connects drum a by pipeline, the soda pop import of drum b, described steam turbine 602 is provided with the first steam and takes pipe 611, second steam takes pipe 612 and takes steam to the steam output end of steam turbine 602 respectively, described first steam takes the heating input of the outfan connection high pressure steam water heater 609 of pipe 611, described second steam takes the heating input of the outfan connection low pressure vapor heater 606 of pipe 612. also include high pressure vapour gas heat exchanger 613, low-pressure steam gas heat exchanger 614, the heated passage of described high pressure vapour gas heat exchanger 613 is connected to the first steam by pipeline and takes between pipe 611, oxygen-eliminating device 607 input, the heated passage of described low-pressure steam gas heat exchanger 614 is connected to the second steam by pipeline and takes between pipe 612, oxygen-eliminating device 607 input, low-pressure steam gas heat exchanger 614 add the passage of heat, high pressure vapour gas heat exchanger 613 heating Tandem on the house steward of the first manifold, described high pressure vapour gas heat exchanger 613 is positioned at the downstream of low-pressure steam gas heat exchanger 614.
Referring to Fig. 1, described circulation air feed system includes the first blower fan 202, second blower fan 203, the inlet end of described first blower fan 202 is connected with the lower end of furnace chamber d by pipeline, the outlet side of described first blower fan 202 is connected with furnace chamber b by pipeline, the air inlet of described second blower fan 203 and atmosphere, the gas outlet of described second blower fan 203 connects the first manifold 204 respectively, the house steward of the second manifold 205, the arm of described first manifold 204 connects for air port with each air compartment below gasification furnace moving hearth and each secondary on gasification furnace respectively, the arm of described second manifold 205 connects for air port with some combustion airs of each air compartment below incinerator moving hearth and cyclone combustion chamber respectively, each arm of described first manifold 204 is respectively provided with the first adjustment valve, each arm of described second manifold 205 is respectively provided with the second adjustment valve.
Referring to Fig. 1, Fig. 5, in the present embodiment, the upper end of described furnace chamber c404 connects with the waste gas outlet of furnace chamber b403 upper end, the lower end of furnace chamber c404 arranges Waste gas outlet, it is provided with economizer 418 in described furnace chamber c404, the water inlet of described economizer 418 connects with the outlet of booster water pump 416, the outlet of described economizer 418 and the soda pop inlet communication of drum a408. The Waste gas outlet of furnace chamber c404 connects flue gas purification system 419, aeration tower 420 that described flue gas purification system 419 includes being sequentially connected in series along discharge directions, cleaner unit 421, air-introduced machine 422, chimney 423. Being provided with air preheater in described furnace chamber c, the outlet side of described second blower fan 203 connects the air inlet of air preheater, and the gas outlet of air preheater connects the house steward of first manifold the 204, second manifold 205.
The origin of heat that boiler body a reclaims is in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas enters cyclone combustion chamber, simultaneously to air-supplied combustion-supporting flammable synthesis gas tangential in cyclone combustion chamber, flue gas sequentially passes through cyclone combustion chamber, furnace chamber a, furnace chamber b, economizer and air preheater.
The origin of heat that boiler body b reclaims high-temperature flue gas after residual burning after refuse gasification, flue gas enters cyclone dust removal room, tangentially enters, tangentially exports, and flue gas sequentially passes through cyclone dust removal room, furnace chamber d, then passes through high-temperature blower and flue gas introduces furnace chamber b.
Recycling economizer preheating condensed water, preheating condensed water enters boiler a and boiler b, and condensed water heats in water-cooling wall and vaporizer, form saturated vapor and enter drum, after steam-water separation, saturated vapor enters superheater, is again thermally formed superheated steam output generating, it is possible to heat supply, heating etc. )
Saving energy in Steam Turbine electricity generation system: the superheated steam from boiler superheater enters the generating of steam cylinder pushing turbine; Steam cylinder takes the first steam entrance high pressure steam water heater and high pressure vapour hot-air heater, heating condensate water and rear formation condensed water return oxygen-eliminating device; Steam cylinder takes the second steam and enters low pressure vapor heater and low-pressure steam hot-air heater, form condensed water after heating-condensing water and air and return oxygen-eliminating device.
Steam cylinder steam (vapor) outlet connects condenser, is entered low pressure vapor heater by water pump pressurization after steam is condensed, and the condensed water after heating is formed and enters oxygen-eliminating device; Utilization of condensed water booster water pump pressurization after deoxygenation, feeds high pressure steam water heater, and the condensed water of heating enters economizer and again heats, and enters back into boiler part.
Add hot-air and condensed water by high-grade steam, improve utilization rate of waste heat, reduce loss.
Circulation air feed system is to the waste disposal method after stoker fired grate formula refuse gasification incinerator air feed, and the method sequentially includes the following steps:
Step A, close the gate of stoker fired grate formula refuse gasification incinerator 1 and atmospheric vent, start machinery grate-type refuse gasification incinerator 1, garbage raw material is put into feed hopper 102, garbage pusher device 106 pusher back and forth, the garbage raw material fallen from feed hopper 102 is pushed feed hopper 102, windrow seal section 108 between gasification furnace 103, windrow seal section 108 is made to form windrow sealing state, unnecessary rubbish falls into the moving hearth 105 of gasification furnace 103, the moving hearth 105 of gasification furnace 103 works, rubbish is conveyed into transition fall slag section 109, residue pusher 110 pusher back and forth, the rubbish in slag section 109 that transition fallen pushes in incinerator 104, the moving hearth 105 of incinerator 104 works conveying garbage, until rubbish is at gasification furnace 103, the moving hearth 105 of incinerator 104 is accumulated to required thickness: 0.6-0.8m, , during baker, the rubbish piled up can protect moving hearth 105, prevent scaling loss siege 105. stop feeding intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 and incinerator 104 quits work, then, communicated with the burner hearth of gasification furnace 103 and incinerator 104 respectively by the igniting combustion supporting hole 114 of gasification furnace 103 and incinerator 104 with start-up burner, under the effect of start-up burner, gasification furnace 103 and incinerator 104 are carried out furnace lifting, baker, treats that this process stabilization completes, make gasification furnace 103 and incinerator 104 burner hearth reach predetermined temperature 600-700 DEG C, baker in order that Natural Water in elimination lining and water of crystallization, in order to avoid when going into operation owing to furnace temperature rises too fast, moisture content expands in a large number to cause body of heater spalling, bubbling or deform even furnace wall and collapses, and affects intensity and the service life of heating furnace furnace wall.
Step B, start and regulate circulation air feed system 2, regulate gasification furnace 103, technological parameter (the pusher speed of incinerator 104 and circulation air feed system 2, fire grate speed, pathogenic wind-warm, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, negative pressure in stove, thickness of feed layer etc.), feed intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 works conveying garbage, rubbish proceeds by burning in the burner hearth of gasification furnace 103, rubbish residue transition fall slag section 109 place pile up formed windrow seal, the stove chamber inner combustion state temperature making gasification furnace 103 is stabilized to more than 850 DEG C, moving hearth 105 work of incinerator 104 exports the rubbish residue after burning.
Step C, regulate each technological parameter (in pusher speed, fire grate speed, pathogenic wind-warm, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, stove negative pressure, thickness of feed layer etc.) of gasification furnace 103, incinerator 104 and circulation air feed system 2, rubbish is gasified by gasification furnace 103 gradually, gasification temperature is stable between 700-800 DEG C, making the stable high-temperature flue gas produced containing 10%-20% synthesis gas of gasification furnace 103, gasification furnace 103 vaporized state stably carries out low temperature, middle temperature or high-temperature gasification. Make incinerator 104 fired state temperature stabilization to more than 850 DEG C, it is achieved rubbish continuous gasification burning disposal; Each technological parameter of cyclone combustion chamber 3 need to be regulated simultaneously, make cyclone combustion chamber 3 the 3rd exhanst gas outlet 304 temperature stabilization to more than 850 DEG C.
Step D, need to overhaul or during blowing out, stopping feeds intake, regulate the technological parameter of gasification furnace 103, incinerator 104 and circulation air feed system 2, gasification furnace 103 is made to be gradually restored to fired state, after rubbish and rubbish residue burn, close stoker fired grate formula refuse gasification incinerator 1 and circulation air feed system 2. Each technological parameter of cyclone combustion chamber 3 need to be regulated simultaneously, make gasification furnace 103 be gradually restored to fired state.
What finally illustrate is, preferred embodiment above is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail by above preferred embodiment, but skilled artisan would appreciate that, in the form and details it can be made various change, without departing from claims of the present invention limited range.
Claims (10)
1. stoker fired grate formula refuse gasification incinerator and a double boiler electricity generation system thereof, including incinerator, steam generator system, circulation air feed system, electricity generation system, it is characterised in that:
Described incinerator includes grate, and the feed hopper set gradually along feedstock direction on grate, gasification furnace and incinerator, the rear of gasification furnace is the cinder notch that falls of gasification furnace, incinerator is positioned at gasification furnace and falls the front lower place of cinder notch, the rear of incinerator is the slag notch of incinerator, described grate is provided with garbage pusher device, described garbage pusher device is positioned at the lower section of feed hopper, for the rubbish in feed hopper is pushed in gasification furnace, the lower section of gasification furnace moving hearth and incinerator moving hearth be respectively arranged below with at least one air compartment being independently arranged, described feed hopper, windrow seal section it is provided with between gasification furnace, grate part between described gasification furnace and incinerator leaves transition fall slag section, the described transition slag section that falls is provided with residue pusher, for the rubbish fallen in gasification furnace residue is pushed in incinerator, described gasification furnace, incinerator include furnace shell, moving hearth respectively, and the forward and backward side of described gasification furnace seals respectively through windrow seal section, the transition slag section that falls, and described transition falls slag section isolation gasification furnace, incinerator, makes gasification furnace, incinerator separate, described gasification furnace, incinerator are respectively in arching upward shape, the face arch of described gasification furnace, rear arch are respectively provided with secondary for air port, the vault of described gasification furnace arranges the first exhanst gas outlet, the vault of described incinerator arranges the second exhanst gas outlet, and described gasification furnace, incinerator are respectively equipped with igniting combustion supporting hole,
Described steam generator system includes boiler body a, boiler body b, described boiler body a has cyclone combustion chamber, furnace chamber a, furnace chamber b, the lower end of described cyclone combustion chamber arranges smoke inlet, the smoke inlet of cyclone combustion chamber and the connection of the first exhanst gas outlet, cyclone combustion chamber upper end is the 3rd exhanst gas outlet, described cyclone combustion chamber is provided with some combustion airs for air port, described some combustion airs are positioned at smoke inlet for air port, between 3rd exhanst gas outlet, 3rd exhanst gas outlet of cyclone combustion chamber upper end connects with the upper end of furnace chamber a, described furnace chamber a, the lower end connection of furnace chamber b, the upper end of described furnace chamber b arranges waste gas outlet, described cyclone firing is indoor circumferentially arranged with ringwise water-cooling wall a, it is provided with superheater a in described furnace chamber a, vaporizer a it is provided with in furnace chamber b, the top of boiler body a arranges drum a, described cyclone combustion chamber, furnace chamber a, furnace chamber b is respectively positioned on below drum a, described drum a is provided with soda pop import, drum a passes through water separator separation steam water interface, the outlet of drum a connects water-cooling wall a respectively through pipeline, the water inlet of vaporizer a, for exporting the isolated water of water separator, described water-cooling wall a, the venthole of vaporizer a connects the air intake of drum a respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum a connects the air intake of superheater a by pipeline, for by the high-temperature steam input superheater a of backflow, the venthole output superheated steam of described superheater a,
Described boiler body b has cyclone dust removal room, furnace chamber d, the lower end of described cyclone dust extractor connects with the second exhanst gas outlet, the upper end of cyclone dust removal room connects with the upper end of furnace chamber d, described cyclone dust removal is indoor circumferentially arranged with ringwise water-cooling wall b, it is provided with superheater b in described furnace chamber d, vaporizer b, described superheater b is positioned at the top of vaporizer b, the top of boiler body b arranges drum b, described cyclone dust removal room, furnace chamber d is respectively positioned on below drum b, described drum b is provided with soda pop import, drum b passes through water separator separation steam water interface, the outlet of drum b is by connecting water-cooling wall b respectively through pipeline, the water inlet of vaporizer b, for exporting the isolated water of water separator, described water-cooling wall b, the venthole of vaporizer b connects the air intake of drum b respectively through steam pipe, for the high-temperature steam that refluxes, the saturated vapor outlet of described drum b connects the air intake of superheater b by pipeline, for by the high-temperature steam input superheater b of backflow, the venthole output superheated steam of described superheater b,
Described circulation air feed system includes the first blower fan, second blower fan, the inlet end of described first blower fan is connected with the lower end of furnace chamber d by pipeline, the outlet side of described first blower fan is connected with furnace chamber b by pipeline, the air inlet of described second blower fan and atmosphere, the gas outlet of described second blower fan connects the first manifold respectively, the house steward of the second manifold, the arm of described first manifold connects for air port with each air compartment below gasification furnace moving hearth and each secondary on gasification furnace respectively, the arm of described second manifold connects for air port with some combustion airs of each air compartment below incinerator moving hearth and cyclone combustion chamber respectively,
Described electricity generation system includes steam input pipe, steam turbine and the electromotor being connected with turbine power, described steam input pipe connects described superheater a respectively through pipeline, the venthole of superheater b, the outfan of steam input pipe connects the steam input of steam turbine, the steam output end of described steam turbine is sequentially connected with condenser by pipeline, water pump, low pressure vapor heater, oxygen-eliminating device, booster water pump, high pressure steam water heater, the input that is heated of described low pressure vapor heater is connected with water pump, being connected with oxygen-eliminating device by hot output terminal of low pressure vapor heater, the input of oxygen-eliminating device is provided with moisturizing pipeline, the input that is heated of described high pressure steam water heater is connected with booster water pump, the hot output terminal that is subject to of high pressure steam water heater connects drum a by pipeline, the soda pop import of drum b, described steam turbine is provided with the first steam and takes pipe, second steam takes pipe and takes steam to the steam output end of steam turbine respectively, described first steam takes the heating input of the outfan connection high pressure steam water heater of pipe, described second steam takes the heating input of the outfan connection low pressure vapor heater of pipe.
2. stoker fired grate formula refuse gasification incinerator according to claim 1 and double boiler electricity generation system thereof, it is characterized in that: also include high pressure vapour gas heat exchanger, low-pressure steam gas heat exchanger, the heated passage of described high pressure vapour gas heat exchanger is connected to the first steam by pipeline and takes pipe, between oxygen-eliminating device input, the heated passage of described low-pressure steam gas heat exchanger is connected to the second steam by pipeline and takes pipe, between oxygen-eliminating device input, low-pressure steam gas heat exchanger add the passage of heat, the heating Tandem of high pressure vapour gas heat exchanger is on the house steward of the first manifold, described high pressure vapour gas heat exchanger is positioned at the downstream of low-pressure steam gas heat exchanger.
3. stoker fired grate formula refuse gasification incinerator according to claim 1 and double boiler electricity generation system thereof, it is characterized in that: described boiler body a has furnace chamber c, the upper end of described furnace chamber c connects with the waste gas outlet of furnace chamber b upper end, and the lower end of furnace chamber c arranges Waste gas outlet.
4. stoker fired grate formula refuse gasification incinerator according to claim 3 and double boiler electricity generation system thereof, it is characterized in that: in described furnace chamber c, be provided with air preheater, the outlet side of described second blower fan connects the air inlet of air preheater, and the gas outlet of air preheater connects the house steward of the first manifold, the second manifold.
5. stoker fired grate formula refuse gasification incinerator according to claim 3 and double boiler electricity generation system thereof, it is characterized in that: in described furnace chamber c, be provided with economizer, the water inlet of described economizer connects with the outlet of booster water pump, and the outlet of described economizer is respectively through the soda pop inlet communication of pipeline with drum a, drum b.
6. stoker fired grate formula refuse gasification incinerator according to claim 3 and double boiler electricity generation system thereof, it is characterized in that: the Waste gas outlet of described furnace chamber c connects flue gas purification system, aeration tower that described flue gas purification system includes being sequentially connected in series along discharge directions, cleaner unit, air-introduced machine, chimney.
7. stoker fired grate formula refuse gasification incinerator according to claim 1 and double boiler electricity generation system thereof, it is characterised in that: described furnace chamber a, furnace chamber b are connected with common slag notch, and this common slag notch connects with the burner hearth of gasification furnace.
8. stoker fired grate formula refuse gasification incinerator according to claim 1 and double boiler electricity generation system thereof, it is characterized in that: the lower end of described cyclone combustion chamber is provided with the taper slag notch that radius from top to bottom diminishes, this taper slag notch connects with the burner hearth of gasification furnace.
9. stoker fired grate formula refuse gasification incinerator according to claim 1 and double boiler electricity generation system thereof, it is characterised in that: described smoke inlet, the 3rd exhanst gas outlet are positioned at the opposition side of cyclone combustion chamber circumferential wall; Described 3rd exhanst gas outlet is radially or tangentially arranged along cyclone combustion chamber circumferential wall.
10. stoker fired grate formula refuse gasification incinerator according to claim 1 and double boiler electricity generation system thereof, it is characterised in that: described transition falls and is provided with isolating door to be opened/closed in slag section, and described isolating door is for cutting off gasification furnace, incinerator.
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| CN105627320B (en) | 2017-10-31 |
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