CN105464727A - Boiler power generation system utilizing rubbish gasification and incineration synthesis gas - Google Patents

Boiler power generation system utilizing rubbish gasification and incineration synthesis gas Download PDF

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Publication number
CN105464727A
CN105464727A CN201511031101.6A CN201511031101A CN105464727A CN 105464727 A CN105464727 A CN 105464727A CN 201511031101 A CN201511031101 A CN 201511031101A CN 105464727 A CN105464727 A CN 105464727A
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China
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steam
pressure
heater
water
furnace chamber
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CN201511031101.6A
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CN105464727B (en
Inventor
严欣平
肖大志
周雄
林顺洪
李长江
丁又青
徐�明
季炫宇
田野
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22BMETHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
    • F22B31/08Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/50Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water

Abstract

The invention discloses a boiler power generation system utilizing rubbish gasification and incineration synthesis gas. The boiler power generation system is small in heat conversion efficiency loss and higher in heat recovery efficiency. The boiler power generation system comprises a steam turbine, a generator, a high-pressure steam input pipe and a medium-pressure steam input pipe. The steam turbine comprises a high-pressure steam cylinder, a medium-pressure steam cylinder and a low-pressure steam cylinder. A first-stage water-steam separator and a first-stage high-pressure steam-steam heater are connected between the high-pressure steam cylinder and the medium-pressure steam cylinder. A second-stage water-steam separator and a second-stage high-pressure steam-steam heater are connected between the medium-pressure steam cylinder and the low-pressure steam cylinder. The steam output end of the low-pressure steam cylinder is connected with a condenser, a water pump, a low-pressure steam-water heater, a deaerator, a booster water pump and a high-pressure steam-water heater in sequence through a pipeline. The high-pressure steam input pipe is connected with the high-pressure steam cylinder and is connected with the deaerator through the heating end of the first-stage high-pressure steam-steam heater, the heating end of the high-pressure steam-water heater, the heating end of the second-stage high-pressure steam-steam heater and the heating end of the low-pressure steam-water heater.

Description

Garbage gasifying is utilized to burn the boiler power generation system of synthetic gas
Technical field
The invention belongs to solid waste incineration processing technology field, particularly relate to the boiler power generation system utilizing garbage gasifying to burn synthetic gas.
Background technique
Existing technology of garbage disposal mainly contains burning, sanitary landfills, compost, waste recovery etc.The advantages such as in waste processing routine techniques, it is obvious that burning disposal has reduced training, and thoroughly innoxious, occupation of land amount is little, and waste heat energy is utilized, 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 of secondary pollution particularly important.Therefore, rubbish pyrolysis gasification burning technology is shifted onto on the road of industrial applications gradually, what particularly mainly adopt now for domestic rubbish is all kinds of incinerating technologies, and the industrialization widely of gasification burning technology is regenerated bringing the technological innovation of domestic waste processing industry.
For many years, China, to the scientific research of the gasification burning such as living beings, rubbish technology, is in progress a lot of, and the fundamental research in laboratory is a lot, also has application study, as the destructive gasifying of: rotary kiln type, vertical and fluid 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 80% of the whole world waste incineration total market size, wherein has and adopt mechanical type backstepping fire grate, forwards fire grate or combined fire grate in body of heater, also has and adopts the fire grate such as chain-plate type and roller type.In boiler equipment, it is a lot of that boiler reclaims heat methods, technology maturation; Heating style is also many, as: the thermals source such as solar energy, smelting furnace waste heat, coal stove, fluidized bed, fixed bed, rotary kiln, utilize boiler to reclaim heat, for generating, heat supply, heating etc.
In sum, typical gasification burning and boiler equipment technology maturation, respectively have himself advantage, but in China's practical application, need the problem and shortage of solution:
1. the characteristic such as, complicated component high for China's domestic garbage water content, the technology of moving hearth uses, and needs emphasis to consider to 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 as mountain, 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 to be the key problem technically needing to solve.
4., in order to effectively increase economic efficiency, in rubbish heat treatment process, the reuse efficiency of heat needs to improve.High-temperature flue gas heat after existing rubbish heat treatment technology adopts boiler to reclaim waste incineration usually, produce steam and shift steam turbine power generation onto, whole transition heat efficiency losses is comparatively large, processes identical quantity of refuse, relatively reduces heat loss and improves heat exchange efficiency and just can improve the thermal efficiency.
Existing incinerator is as following two patent of invention: multiple row sectional drive combined type domestic garbage incinerator (ZL200710092508.9) and the middle an open question of two-stage garbage incinerator (ZL201010268376.2): rubbish heat treatment mode is relatively backward, just drying-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 easily produces secondary pollution; Rubbish, when stove combustion, crosses oxygen quotient large, and First air, Secondary Air infeed amount are large, and in flue gas, dust content is higher, and affect comparatively large on heat reclaiming system and smoke processing system, easy dust stratification, exhaust gas volumn is comparatively large, reduces thermal conversion efficiency; The gasification oven arranged separately and incinerator, can only gradation disposal of refuse, and cannot realize large-scale rubbish continuous gasification burning disposal, garbage treatment quantity is less.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of transition heat efficiency losses less, the garbage gasifying that utilizes that the reuse efficiency of heat is higher burns the boiler power generation system of synthetic gas.
The object of the present invention is achieved like this:
Utilize garbage gasifying to burn the boiler power generation system of synthetic gas, the generator comprising steam turbine and be connected with turbine power, described steam turbine comprises high pressure cylinder, intermediate cylinder, low pressure cylinder,
Described high pressure cylinder, first order steam trap is set between intermediate cylinder, first order high pressure vapour vapour heater, the described input end of first order steam trap is connected by pipeline with the output terminal of high pressure cylinder, the steam output end of first order steam trap is connected by pipeline with the input end that is heated of first order high pressure vapour vapour heater, being connected by pipeline with the steam input end of intermediate cylinder by hot output terminal of described first order high pressure vapour vapour heater, intermediate cylinder, second level steam trap is set between low pressure cylinder, second level high pressure vapour vapour heater, the input end of described second level steam trap is connected by pipeline with intermediate cylinder output terminal, the steam output end of second level steam trap is connected by pipeline with the input end that is heated of second level high pressure vapour vapour heater, being connected by pipeline with the steam input end of low pressure cylinder by hot output terminal of described second level high pressure vapour vapour heater,
The steam output end of low pressure cylinder connects condenser successively by pipeline, water pump, low pressure vapor heater, oxygen-eliminating device, booster water pump, high pressure steam water heater, the input end 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 end of oxygen-eliminating device is provided with moisturizing pipeline, the input end 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 exports boiler feed water, the water output terminal of described first order steam trap, the water output terminal of second level steam trap connects the input end of oxygen-eliminating device respectively by pipeline,
Also comprise high pressure steam supplying tube, medium pressure steam supplying tube, described medium pressure steam supplying tube connects the input end of intermediate cylinder, described high pressure steam supplying tube connects the input end of high pressure cylinder respectively by pipeline, the heating input end of first order high pressure vapour vapour heater, the heating input end of second level high pressure vapour vapour heater, the heating input end adding hot output terminal connection high pressure steam water heater of first order high pressure vapour vapour heater, the input end adding hot output terminal connection oxygen-eliminating device of high pressure steam water heater, the heating input end adding hot output terminal connection low pressure vapor heater of second level high pressure vapour vapour heater, the input end adding hot output terminal connection oxygen-eliminating device of low pressure vapor heater.
Described high pressure cylinder is provided with the first steam and gets pipe, first steam is got pipe and is got steam to the output terminal of high pressure cylinder, first steam gets the heating input end of the output terminal connection high pressure steam water heater of pipe, described intermediate cylinder is provided with the second steam and gets pipe, second steam is got pipe and is got steam to the output terminal of intermediate cylinder, and the second steam gets the heating input end of the output terminal connection low pressure vapor heater of pipe.
Also comprise boiler body, described boiler body has cyclone combustion chamber, furnace chamber a, furnace chamber b, the lower end of described cyclone combustion chamber arranges smoke inlet, cyclone combustion chamber upper end is the 3rd smoke outlet, 3rd smoke outlet of cyclone combustion chamber upper end is communicated with the upper end of furnace chamber a, described furnace chamber a, the lower end of furnace chamber b is communicated with, the upper end of described furnace chamber b arranges waste gas outlet, described cyclone combustion indoor are circumferentially provided with ringwise water cooled furnace wall, superheater I is provided with in described furnace chamber a, superheater II, described superheater I is positioned at the top of superheater II, vaporizer is provided with in furnace chamber b, the top of boiler body arranges drum, described cyclone combustion chamber, furnace chamber a, furnace chamber b is all positioned at below drum, described drum is provided with carbonated drink import, carbonated drink import is connected by hot output terminal by pipeline and high pressure steam water heater, water separator is provided with in drum, for separating of steam water interface, drum connects the water intake of water cooled furnace wall by the first falling tube, for exporting the isolated water of water separator, drum connects the water intake of vaporizer by the second falling tube, for exporting the isolated water of water separator, described water cooled furnace wall, the steam ouput of vaporizer connects the steam inlet of drum respectively by steam pipe, for the high-temperature steam that refluxes, the saturated vapour outlet of described drum connects superheater I respectively by pipeline, the steam inlet of superheater II, for the high-temperature steam of backflow is inputted in superheater, the steam ouput of described superheater I connects high pressure steam supplying tube and exports high pressure superheated steam, hot steam is pressed through in the steam ouput connection medium pressure steam supplying tube output of described superheater II.
In order to the flue gas of discharging furnace chamber b carries out further heat recovery, improve heat recovery efficiency, further, described boiler body has furnace chamber c, the upper end of described furnace chamber c is communicated with the waste gas outlet of furnace chamber b upper end, and the lower end of furnace chamber c arranges Waste gas outlet, is provided with vapor economizer in described furnace chamber c, the water intake of described vapor economizer and being communicated with by hot output terminal of high pressure steam water heater, the water outlet of described vapor economizer and the carbonated drink inlet communication of drum.
In order to the flue gas of discharging furnace chamber c carries out innocuity treatment, preferably, the Waste gas outlet of furnace chamber c connects flue gas purification system, and described flue gas purification system comprises aeration tower, deduster, induced draught fan, the chimney of connecting successively along discharge directions.
Further, also comprise the gasification oven of stoker fired grate formula refuse gasification incinerator, incinerator and circulation air feed system thereof, can seal or be communicated with between gasification oven and incinerator, the below of gasification oven siege and the below of incinerator siege are respectively equipped with at least one independently air compartment, the face arch of described gasification oven, rear arch are arranged respectively secondary for air port, the vault of described gasification oven arranges the first smoke outlet, the smoke inlet of described cyclone combustion chamber is communicated with the first smoke outlet by pipeline, and the vault of described incinerator arranges the second smoke outlet;
Described circulation air feed system comprises dust removal apparatus, first blower fan, second blower fan, the inlet end of described dust removal apparatus is connected with the second smoke outlet by pipeline, the outlet side of described dust removal apparatus is connected by the inlet end of pipeline with the first blower fan, the outlet side of described first blower fan connects the house steward of the first manifold, the arm of described first manifold respectively with each air compartment of the below of gasification oven moving hearth, each secondary on gasification oven is communicated with for the smoke inlet of air port and cyclone combustion chamber, each arm of described first manifold arranges the first modulating valve respectively, the suction port of described second blower fan is communicated with air, the air outlet of described second blower fan connects the house steward of the second manifold, the arm of described second manifold respectively with incinerator moving hearth below each air compartment and the inlet end of dust removal apparatus, outlet side is communicated with, each arm of described second manifold arranges the second modulating valve respectively.
In order to the flue gas of discharging furnace chamber b carries out further heat recovery, improve heat recovery efficiency, preferably, described boiler body has furnace chamber c, the upper end of described furnace chamber c is communicated with the waste gas outlet of furnace chamber b upper end, and the lower end of furnace chamber c arranges Waste gas outlet, is provided with air preheater in described furnace chamber c, the outlet side of described second blower fan connects the suction port of air preheater, and the air outlet of air preheater connects the house steward of the second manifold.
In order to reduce heat loss and improve heat exchange efficiency, make the reuse efficiency of heat higher, utilize the wind that the second blower fan bloats more fully, and be beneficial to the air output of meticulousr adjustment cyclone combustion chamber each several part, preferably, 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 smoke outlet, also comprise the 3rd manifold, the house steward of described 3rd manifold is communicated with the air outlet of the second blower fan, each arm of described 3rd manifold is communicated with for air port with some combustion airs respectively, each arm of the 3rd manifold is arranged respectively the 3rd modulating valve.
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 pollution, preferably, be provided with common taphole below described furnace chamber a, furnace chamber b, this common taphole is communicated with the burner hearth of gasification oven.
In order to discharge the waste residue that the indoor flue gas deposition of cyclone combustion produces, and prevent from waste residue from overflowing producing polluting, preferably, the lower end of described cyclone combustion chamber is provided with the taper taphole that radius from top to bottom diminishes, and this taper taphole is communicated with the burner hearth of gasification oven.
Owing to have employed technique scheme, the present invention has following beneficial effect:
The steam that steam turbine has not utilized all can be converted to water by condenser, and absorb the heat of steam release, the Main Function of oxygen-eliminating device is exactly remove oxygen in boiler feed water and other gas with it, ensure the quality of feedwater, booster water pump can improve hydraulic pressure, ensures to the water supply capacity of water input system, and power generation system is by heating low-grade steam and condensed water by high-grade steam, improve utilization rate of waste heat, reduce thermal losses.
The water cooled furnace wall of annular is arranged on cyclone combustion chamber by this steam generator system, and synthetic gas is more abundant in cyclone combustion Indoor Combustion, and the temperature that burning produces is higher, relatively reduces heat loss and improves heat exchange efficiency.The origin of heat that this steam generator system reclaims is in the high-temperature synthesis gas flue gas of garbage gasifying outlet of still, synthetic gas flue gas enters cyclone combustion chamber, tangential air-supplied combustion-supporting flammable synthetic gas in cyclone combustion chamber simultaneously, flue gas is successively through cyclone combustion chamber, furnace chamber a, furnace chamber b, vapor economizer and air preheater.Recycling vapor economizer preheating condensed water, preheating condensed water enters boiler part, and condensed water heats in water cooled furnace wall and vaporizer, form saturated vapour and enter drum, after carbonated drink is separated, saturated vapour enters superheater, again adds thermosetting superheated vapor and exports, for generating.The present invention 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 is effectively decomposed, and decreasing pollution thing discharges, and achieves the synthetic gas burning disposal after rubbish continuous gasification and heat recovery and utilization.
Gasification oven, the incinerator of incinerator are provided separately, the vault of gasification oven arranges the first smoke outlet, the vault of incinerator arranges the second smoke outlet, be beneficial to the difference smoke treatment respectively according to flue gas quality, be conducive to flue gas ash removal simultaneously, can provide the flue gas of more high-quality, make the utilization ratio of flue gas higher, the waste residue of discharge is less.
Second blower fan blasts air and provides First air for incinerator and provide temperature adjustment air feed for cyclone separator, the first blower fan, regulates wind supply quantity, incinerator residue is fully burnt by the second modulating valve on corresponding pipeline, then, first blower fan extracts the flue gas of incinerator, after temperature adjustment and cyclone collection flying dust, form First air and the Secondary Air of the flue gas supply gasification oven of certain pressure, wind supply quantity is regulated by the first modulating valve on corresponding pipeline, rubbish in gasification oven is made to produce gasification, flue gas containing a certain amount of synthetic gas in gasification oven, discharge from the first smoke outlet, enter cyclone combustion chamber processing links, the unnecessary flue gas that first blower fan extracts also enters cyclone combustion chamber simultaneously, take full advantage of the high-temperature flue gas that incinerator is discharged, put forward high-octane utilization ratio, cyclone combustion chamber provides high-temperature flue gas.The stoker fired grate formula refuse gasification incinerator garbage treatment quantity of this structure is large, 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 domestic garbage water content is high, complicated component, improve the energy conversion efficiency in garbage processing procedure and reduce pollutant discharge amount in flue gas, effectively prevent secondary pollution, and large-scale rubbish continuous gasification burning disposal can be realized, ensure that garbage gasifying burns effect and lime-ash clinker ignition loss, relative minimizing heat loss and raising heat exchange efficiency, improve the thermal efficiency.
Accompanying drawing explanation
Fig. 1 is 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 power generation system;
Fig. 5 is the structural representation of flue gas purification system;
Fig. 6 is the structural representation of incinerator;
Fig. 7 is the structural representation of circulation air feed system.
Reference character
1 is incinerator, and 101 is grate, and 102 is feed hopper, 103 is gasification oven, 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 to fall slag section for transition, and 110 is residue material pusher, and 111 is isolating door, 112 is the first smoke outlet, and 113 is the second smoke outlet, and 114 is igniting combustion supporting hole, 115 for secondary is for air port, and 116 is taphole, and 117 is the cinder notch that falls;
201 is dust removal apparatus, and 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, and 206 is the 3rd manifold, and 207 is the first modulating valve, and 208 is the second modulating valve, and 209 is the 3rd modulating valve;
3 is cyclone combustion chamber, and 301 is combustion chamber ignition combustion-supporting hole, and 302 is taper taphole, and 303 is smoke inlet, and 304 is the 3rd smoke outlet, and 305 for combustion air is for air port;
4 is boiler body, and 401 is superheater I, and 402 is furnace chamber a, 403 is furnace chamber b, and 404 is furnace chamber c, and 405 is water cooled furnace wall, 406 is superheater II, and 407 is vaporizer, and 408 is drum, 409 is the first falling tube, and 410 is the second falling tube, and 418 is vapor economizer, 419 is flue gas purification system, and 420 is aeration tower, and 421 is deduster, 422 is induced draught fan, and 423 is chimney, and 424 is air preheater;
601 is high pressure cylinder, 602 is intermediate cylinder, 603 is low pressure cylinder, and 604 is first order steam trap, and 605 is first order high pressure vapour vapour heater, 606 is second level steam trap, 607 is second level high pressure vapour vapour heater, and 608 is condenser, and 609 is water pump, 610 is oxygen-eliminating device, 611 is booster water pump, and 612 is moisturizing pipeline, and 613 is generator, 614 is low pressure vapor heater, 615 is high pressure steam water heater, and 616 is high pressure steam supplying tube, and 617 is medium pressure steam supplying tube, 618 is that the first steam gets pipe, and 619 is that the second steam gets pipe.
Embodiment
See Fig. 1 to Fig. 7, it is a kind of preferred embodiment utilizing garbage gasifying to burn the boiler power generation system of synthetic gas.
See Fig. 4, the generator 613 that power generation system comprises steam turbine and is connected with turbine power, described steam turbine comprises high pressure cylinder 601, intermediate cylinder 602, low pressure cylinder 603, described high pressure cylinder 601, first order steam trap 604 is set between intermediate cylinder 602, first order high pressure vapour vapour heater 605, the input end of described first order steam trap 604 is connected by pipeline with the output terminal of high pressure cylinder 601, the steam output end of first order steam trap 604 is connected by pipeline with the input end that is heated of first order high pressure vapour vapour heater 605, being connected by pipeline with the steam input end of intermediate cylinder 602 by hot output terminal of described first order high pressure vapour vapour heater 605, intermediate cylinder 602, second level steam trap 606 is set between low pressure cylinder 603, second level high pressure vapour vapour heater 607, the input end of described second level steam trap 606 is connected by pipeline with intermediate cylinder 602 output terminal, the steam output end of second level steam trap 606 is connected by pipeline with the input end that is heated of second level high pressure vapour vapour heater 607, being connected by pipeline with the steam input end of low pressure cylinder 603 by hot output terminal of described second level high pressure vapour vapour heater 607.
The steam input end of low pressure cylinder 603 connects condenser 608 successively by pipeline, water pump 609, low pressure vapor heater 614, oxygen-eliminating device 610, booster water pump 611, high pressure steam water heater 615, the input end that is heated of described low pressure vapor heater 614 is connected with water pump 609, being connected with oxygen-eliminating device 610 by hot output terminal of low pressure vapor heater 614, the input end of oxygen-eliminating device 610 is provided with moisturizing pipeline 612, the input end that is heated of described high pressure steam water heater 615 is connected with booster water pump 611, the hot output terminal that is subject to of high pressure steam water heater 615 exports boiler feed water, the water output terminal of described first order steam trap 604, the water output terminal of second level steam trap 606 connects the input end of oxygen-eliminating device 610 respectively by pipeline.
Also comprise high pressure steam supplying tube 616, medium pressure steam supplying tube 617, described medium pressure steam supplying tube 617 connects the input end of intermediate cylinder 602, described high pressure steam supplying tube 616 connects the input end of high pressure cylinder 601 respectively by pipeline, the heating input end of first order high pressure vapour vapour heater 605, the heating input end of second level high pressure vapour vapour heater 607, the heating input end adding hot output terminal connection high pressure steam water heater 615 of first order high pressure vapour vapour heater 605, the input end adding hot output terminal connection oxygen-eliminating device 610 of high pressure steam water heater 615, the heating input end adding hot output terminal connection low pressure vapor heater 614 of second level high pressure vapour vapour heater 607, the input end adding hot output terminal connection oxygen-eliminating device 610 of low pressure vapor heater 614.
Described high pressure cylinder 601 is provided with the first steam and gets pipe 618, first steam is got pipe 618 and is got steam to the output terminal of high pressure cylinder 601, first steam gets the heating input end of the output terminal connection high pressure steam water heater 615 of pipe 618, described intermediate cylinder 602 is provided with the second steam and gets pipe 619, second steam is got pipe 619 and is got steam to the output terminal of intermediate cylinder 602, and the second steam gets the heating input end of the output terminal connection low pressure vapor heater 614 of pipe 619.
See Fig. 1, also comprise the gasification oven 103 of stoker fired grate formula refuse gasification incinerator, incinerator 104 and circulation air feed system thereof, can seal or be communicated with between gasification oven 103 and incinerator 104, the below of gasification oven 103 siege and the below of incinerator 104 siege are respectively equipped with two independently air compartments 107, the face arch of described gasification oven 103, rear arch are arranged respectively secondary for air port 115, the vault of described gasification oven 103 arranges the first smoke outlet 112, and the vault of described incinerator 104 arranges the second smoke outlet 113.
See Fig. 1, Fig. 2, Fig. 3, also comprise boiler body, described boiler body 4 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 communicated with the first smoke outlet 112 of gasification oven 103 by pipeline, cyclone combustion chamber 3 upper end is the 3rd smoke outlet 304, described smoke inlet 303, the 3rd smoke outlet 304 are positioned at the opposition side of cyclone combustion chamber 3 peripheral wall, and the top of cyclone combustion chamber 3 arranges combustion chamber ignition combustion-supporting hole 301.Discharge from the 3rd smoke outlet 304 after fully mixing, burning in cyclone combustion chamber 3 to make flue gas, combustion air, 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 303, the 3rd smoke outlet 304.Described smoke inlet 303, the 3rd smoke outlet 304, combustion air supply air port 305 along cyclone combustion chamber 3 peripheral wall radial direction or tangentially arrange.3rd smoke outlet 304 of cyclone combustion chamber 3 upper end is communicated with the upper end of furnace chamber a402, the lower end of described furnace chamber a402, furnace chamber b403 is communicated with, 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 taphole 302 that radius from top to bottom diminishes, and this taper taphole 302 is communicated with the burner hearth of gasification oven 103.Be provided with common taphole below described furnace chamber a402, furnace chamber b403, this common taphole is communicated with the burner hearth of gasification oven 103.
Ringwise water cooled furnace wall 405 is circumferentially with along inwall in described cyclone combustion chamber 3, superheater I 401 is provided with in described furnace chamber a402, superheater II 406, described superheater I 401 is positioned at the top of superheater II 406, vaporizer 407 is provided with in furnace chamber b403, the top of boiler body 4 arranges drum 408, described cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403 is all positioned at below drum 408, described drum 408 is provided with carbonated drink import, for inputting steam water interface, carbonated drink import is connected by hot output terminal by pipeline and high pressure steam water heater, water separator is provided with in drum 408, for separating of steam water interface, drum 408 connects the water intake of water cooled furnace wall 405 by the first falling tube 409, for exporting the isolated water of water separator, drum 408 connects the steam inlet of vaporizer 407 by the second falling tube 410, for exporting the isolated steam of water separator, described water cooled furnace wall 405, the steam ouput of vaporizer 407 connects the steam inlet of drum 408 respectively by steam pipe, for the high-temperature steam that refluxes, the saturated vapour outlet of described drum 408 connects superheater I 401 respectively by pipeline, the steam inlet of superheater II 406, for the high-temperature steam of backflow is inputted in superheater 406, the steam ouput of described superheater I 401 connects high pressure steam supplying tube and exports high pressure superheated steam, hot steam is pressed through in the steam ouput connection medium pressure steam supplying tube output of described superheater II 406.
The upper end of described furnace chamber c404 is communicated with the smoke outlet of furnace chamber b403 upper end, the lower end of furnace chamber c404 arranges smoke outlet, vapor economizer 418 is provided with in described furnace chamber c404, the water intake of described vapor economizer 418 is communicated with the water outlet of booster water pump 416, the water outlet of described vapor economizer 418 and the carbonated drink inlet communication of drum 408.The smoke outlet of furnace chamber c404 connects flue gas purification system 419, and described flue gas purification system 419 comprises aeration tower 420, deduster 421, induced draught fan 422, the chimney 423 of connecting successively along discharge directions.
Described circulation air feed system comprises dust removal apparatus 201, first blower fan 202, second blower fan 203, in the present embodiment, described dust removal apparatus 201 is cyclone separator or hot precipitator 421, and described first blower fan 202 is high-temperature blower, and described second blower fan 203 is blower.The inlet end of described dust removal apparatus 201 is connected with the second smoke outlet 113 by pipeline, the outlet side of described dust removal apparatus 201 is connected by the inlet end of pipeline with the first blower fan 202, the outlet side of described first blower fan 202 connects the house steward of the first manifold 204, the arm of described first manifold 204 respectively with each air compartment 107 of the below of gasification oven 103 moving hearth, each secondary on gasification oven 103 is communicated with for the smoke inlet 303 of air port 115 and cyclone combustion chamber 3, each arm of described first manifold 204 arranges the first modulating valve 207 respectively, the suction port of described second blower fan 203 is communicated with air, the air outlet of described second blower fan 203 connects the house steward of the second manifold 205, the arm of described second manifold 205 respectively with incinerator 104 moving hearth below each air compartment 107 and the inlet end of dust removal apparatus 201, outlet side is communicated with, each arm of described second manifold 205 arranges the second modulating valve 208 respectively.Also comprise the 3rd manifold 206, the house steward of described 3rd manifold 206 is communicated with the air outlet of the second blower fan 203, each arm of described 3rd manifold 206 is communicated with for air port 305 with some combustion airs respectively, each arm of the 3rd manifold 206 is arranged respectively the 3rd modulating valve 209.Be provided with air preheater 424 in described furnace chamber c404, in the present embodiment, air preheater 424 is positioned at the downstream of vapor economizer 418.The outlet side of described first blower fan 202 connects the suction port of air preheater 424, and the air outlet of air preheater 424 connects the house steward of the first manifold 204.
The origin of heat that steam generator system reclaims is in the high-temperature synthesis gas flue gas of garbage gasifying outlet of still, synthetic gas flue gas enters cyclone combustion chamber, tangential air-supplied combustion-supporting flammable synthetic gas in cyclone combustion chamber simultaneously, flue gas is successively through cyclone combustion chamber, furnace chamber a, furnace chamber b, vapor economizer and air preheater.
Recycling vapor economizer preheating condensed water, preheating condensed water enters boiler part, condensed water heats in water cooled furnace wall and vaporizer, form saturated vapour and enter drum, after carbonated drink is separated, saturated vapour enters high-pressure superheater and middle pressure superheater, again add thermosetting superheated vapor and export generating, also can heat supply, heating etc.
Steam turbine gradient energy-saving power generation system: the high pressure steam from Boiler High Pressure superheater enters the generating of high pressure cylinder pushing turbine; High pressure cylinder steam (vapor) outlet connects first order steam-water separator, and after being separated, steam enters first order high pressure vapour vapour heater, and outlet medium pressure steam generates electricity with from pressing the medium pressure steam of superheater to collect in boiler to enter intermediate cylinder pushing turbine; Intermediate cylinder steam (vapor) outlet connects second level steam-water separator, and after being separated, steam enters second level high pressure vapour vapour heater, and outlet low pressure steam enters the generating of low pressure cylinder pushing turbine.
Low pressure cylinder steam (vapor) outlet connects condenser, and steam is pressurizeed by water pump and enters low pressure vapor heater after condensation, and the condensed water after heating is formed and enters oxygen-eliminating device; Utilization of condensed water booster water pump pressurization after deoxygenation, feed high pressure steam water heater, the condensed water of heating enters vapor economizer and again heats, then enters boiler part.
Get in high pressure cylinder steam and first order high pressure vapour vapour heater use after high pressure steam collect and enter high pressure steam water heater, form condensed water after heating condensate water and return oxygen-eliminating device; Get in intermediate cylinder steam and second level high pressure vapour vapour heater use after high pressure steam collect and enter low pressure vapor heater, form condensed water after heating condensate water and return oxygen-eliminating device; In steam-water separator, isolated condensed water returns oxygen-eliminating device.
Heat low-grade steam and condensed water by high-grade steam, improve utilization rate of waste heat, Loss reducing.
See Fig. 6, Fig. 7, for concrete structure and the circulation air feed system thereof of stoker fired grate formula refuse gasification incinerator 1, comprise grate 101, and along feed hopper 102, gasification oven 103 and incinerator 104 that feedstock direction sets gradually on grate 101, the rear of incinerator 104 is the taphole 116 of incinerator 104, described incinerator 104 is provided with cinder notch 117, the taphole 116 of described incinerator 104 is positioned at incinerator and falls immediately below cinder notch 117, described in the cinder notch 117 that falls be communicated with by the taphole of pipeline with dust removal apparatus 201.This sealing structure is effective, effectively can hold decreasing pollution thing discharge amount.Gasification oven 103 gasifying containing charcoal part mainly to rubbish, and discharge flammable gasification flue gas and rubbish residue, incinerator 104 mainly carries out the burning process of carbon residue, and discharges innoxious lime-ash.The siege 105 of gasification oven 103 and incinerator 104 all adopts the stoker fired grate formula moving hearth 105 of segmentation drive, the fire grate of stoker fired grate formula moving hearth 105 is 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 drive unit to drive.Stoker fired grate formula moving hearth 105 is as the carrier of conveying garbage, and its mode of execution can be all types of moving hearths 105, as chain-plate type, roller type, multi-section type fire grate system etc.
Described grate 101 is provided with garbage pusher device 106, described garbage pusher device 106 is positioned at the below of feed hopper 102, for the rubbish in feed hopper 102 is pushed in gasification oven 103, the below of gasification oven 103 moving hearth 105 and the below of incinerator 104 moving hearth 105 are respectively equipped with at least one air compartment 107 independently arranged, in the present embodiment, the fire grate corresponding with an air compartment 107 of gasification oven 103 first half, drive unit, as the dryer section of gasification oven 103 siege 105, the fire grate that an air compartment 107 latter half of with gasification oven 103 is corresponding, drive unit is as the gasification section of gasification oven 103 siege 105.The dryer section of gasification oven 103 siege 105, gasification section can adopt 1-2 independently air compartment 107 air feed respectively, also can adopt 3-4 independently air compartment 107 air feed respectively.Certainly, fire grate, drive unit and air compartment 107 also can not corresponding settings, better regulate the bed of material on moving hearth 105 to move and air distribution relation.Incinerator 104 can adopt 1-4 independently air compartment 107 air feed, burns rear lime-ash and gets rid of from taphole, enter next step treating process.
Windrow seal section 108 is provided with between described feed hopper 102, gasification oven 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, advance, pusher forms windrow at windrow seal section 108 back and forth again, makes gasification oven 103 entrance be in windrow sealing state, strengthen gasification oven 103 sealing effect, solve garbage pusher device 106 and feed hopper 102 easily leakage problem.When needing complete prepurging to dispose all rubbish, garbage pusher device 106 is forward impelling half stroke again, is pushed completely in gasification oven 103 by rubbish, makes gasification oven 103 entrance lose windrow sealing effect.Grate 101 part between described gasification oven 103 and incinerator 104 leaves transition to fall slag section 109, the described transition slag section 109 that falls is provided with residue material pusher 110, for the rubbish fallen in gasification oven 103 residue is pushed in incinerator 104, transition fall slag section 109 pile up rubbish residue time can be in windrow sealing state, strengthen gasification oven 103 sealing effect, solve the problem of wind of going here and there between gasification oven 103, incinerator 104.In the present embodiment, described transition falls in slag section 109 and is provided with isolating door 111 to be opened/closed, and described isolating door 111 is for cutting off gasification oven 103, incinerator 104.At the furnace lifting initial stage or when needing to control to alter wind between gasification oven 103 and incinerator, close isolating door 111, after the slag section that falls stacks the sealing of a certain amount of residue formation windrow, isolating door 111 can be kept to open, the residue material pusher 110 arranged with below is coordinated to use, to realize rubbish continuous gasification burning disposal.
The upper end of described gasification oven 103, the upper end of incinerator 104 are respectively in the shape that arches upward, and the face arch of described gasification oven 103 is flat construction, or the face arch of gasification oven 103 is that rear end is inclined upwardly structure.The vault of described gasification oven 103 arranges the first smoke outlet 112, and the vault of described incinerator 104 arranges the second smoke outlet 113, and the arching upward of described gasification oven 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 the first smoke outlet 112, second smoke outlet 113, and gasification oven 103 furnace cavity, compared with traditional refuse incinerator, reduces relatively; 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 and fully gasify.The face arch of described gasification oven 103, rear arch are arranged respectively secondary for air port 115.
Gasification oven 103 First air is that the flue gas generation certain pressure of high-temperature blower extraction incinerator 104 blasts in an air compartment 107 corresponding below gasification oven 103 stoker fired grate formula moving hearth 105, again by an air holes spray penetration rubbish on moving hearth 105, gasify, regulate wind supply quantity by the first modulating valve 207 on each arm of correspondence.Gasification oven 103 Secondary Air is that the flue gas generation certain pressure of high-temperature blower extraction incinerator 104 blasts gasification oven 103 burner hearth, and its spray-hole is arranged on gasification oven 103 face arch and rear arch.Forward and backward arch is provided with secondary for air port 115, improves gasification efficiency, strengthen polymer substance in flue gas and decompose.Rear arch has igniting combustion supporting hole 114, in furnace lifting, baker and stable gasification oven 103, temperature uses, and regulates wind supply quantity by the first modulating valve 207 on each arm of correspondence.The suction port of described second blower fan 203 is communicated with air, and the air that the second blower fan 203 blasts can be cold wind or the hot blast after heating.The air outlet of described second blower fan 203 connects the house steward of the second manifold 205, the arm of described second manifold 205 is communicated with the inlet end of each air compartment 107 below incinerator 104 moving hearth 105 and dust removal apparatus 201, outlet side respectively, and each arm of described second manifold 205 arranges the second modulating valve 208 respectively.Incinerator 104 First air is that the air of certain pressure blasts in an air compartment 107 corresponding below stoker fired grate formula moving hearth 105 by blower, again by an air holes spray penetration residue on moving hearth 105, carry out residual burning, regulate wind supply quantity by the first modulating valve 207 on each arm of correspondence.The inlet end of dust removal apparatus 201, the air intake of outlet side are temperature adjustment air feed, temperature adjustment air feed is that the air of certain pressure is blasted incinerator 104 and exports (i.e. cyclone inlet) and carry out temperature adjustment by blower, simultaneously, Cyclone outlet (i.e. high-temperature blower entrance) blasts further temperature adjustment, regulates wind supply quantity by the first modulating valve 207 on each arm of correspondence.
Circulation air feed system is to the waste disposal method after stoker fired grate formula refuse gasification incinerator air feed, and the method is carried out according to the following steps:
Steps A, close the gate that stoker fired grate formula refuse gasification incinerator 1 ventilates with air, start mechanical grate type refuse gasification incinerator 1, garbage raw material is dropped 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 oven 103, windrow seal section 108 is made to form windrow sealing state, unnecessary rubbish falls into the moving hearth 105 of gasification oven 103, the moving hearth 105 of gasification oven 103 works, rubbish is conveyed into transition to fall slag section 109, residue material pusher 110 pusher back and forth, rubbish transition fallen in slag section 109 pushes in incinerator 104, the moving hearth 105 of incinerator 104 works conveying garbage, until rubbish is at gasification oven 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 oven 103 and incinerator 104 quits work, then, communicate with the burner hearth of gasification oven 103 and incinerator 104 respectively with the igniting combustion supporting hole 114 of start-up burner by gasification oven 103 and incinerator 104, under the effect of start-up burner, furnace lifting, baker are carried out to gasification oven 103 and incinerator 104, treats that this process stabilization completes, make gasification oven 103 and incinerator 104 burner hearth reach predetermined temperature 600-700 DEG C; The object of baker is to remove Natural Water in lining and water of crystallization, in order to avoid when going into operation because furnace temperature rises too fast, moisture content expands in a large number to cause body of heater spalling, bubbling or be out of shape even furnace wall and collapses, and affects intensity and the working life of oven furnace wall.
Step B, start and regulate circulation air feed system 2, regulate gasification oven 103, process parameter (the material pusher speed of incinerator 104 and circulation air feed system 2, fire grate speed, a wind-warm syndrome, 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 oven 103 works conveying garbage, rubbish starts to burn in the burner hearth of gasification oven 103, rubbish residue transition fall slag section 109 place pile up formed windrow sealing, the burner hearth combustion state temperature of gasification oven 103 is made to be stabilized to more than 850 DEG C, the moving hearth 105 of incinerator 104 works and exports the rubbish residue after burning.
Step C, regulate each process parameter (in material pusher speed, fire grate speed, wind-warm syndrome, blast and an air quantity, secondary air temperature, blast and air quantity, furnace temperature, stove negative pressure, thickness of feed layer etc.) of gasification oven 103, incinerator 104 and circulation air feed system 2, gasification oven 103 gasifies to rubbish gradually, gasification temperature is stabilized between 700-800 DEG C, make the stable high-temperature flue gas produced containing 10%-20% synthetic gas of gasification oven 103, gasification oven 103 vaporized state is stable carries out low temperature, middle temperature or high-temperature gasification.Make incinerator 104 combustion regime temperature stabilization to more than 850 DEG C, realize rubbish continuous gasification burning disposal; Each process parameter of cyclone combustion chamber 3 need be regulated simultaneously, make cyclone combustion chamber 3 the 3rd smoke outlet 304 temperature stabilization to more than 850 DEG C.
Step D, need overhaul or blowing out time, stopping feeds intake, regulate the process parameter of gasification oven 103, incinerator 104 and circulation air feed system 2, gasification oven 103 is made to return to combustion regime gradually, after rubbish and rubbish residue burn, close stoker fired grate formula refuse gasification incinerator 1 and circulation air feed system 2.Each process parameter of cyclone combustion chamber 3 need be regulated simultaneously, make gasification oven 103 return to combustion regime gradually.
What finally illustrate is, above preferred embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.

Claims (10)

1. utilize garbage gasifying to burn the boiler power generation system of synthetic gas, the generator comprising steam turbine and be connected with turbine power, described steam turbine comprises high pressure cylinder, intermediate cylinder, low pressure cylinder, it is characterized in that:
Described high pressure cylinder, first order steam trap is set between intermediate cylinder, first order high pressure vapour vapour heater, the described input end of first order steam trap is connected by pipeline with the output terminal of high pressure cylinder, the steam output end of first order steam trap is connected by pipeline with the input end that is heated of first order high pressure vapour vapour heater, being connected by pipeline with the steam input end of intermediate cylinder by hot output terminal of described first order high pressure vapour vapour heater, intermediate cylinder, second level steam trap is set between low pressure cylinder, second level high pressure vapour vapour heater, the input end of described second level steam trap is connected by pipeline with intermediate cylinder output terminal, the steam output end of second level steam trap is connected by pipeline with the input end that is heated of second level high pressure vapour vapour heater, being connected by pipeline with the steam input end of low pressure cylinder by hot output terminal of described second level high pressure vapour vapour heater,
The steam output end of low pressure cylinder connects condenser successively by pipeline, water pump, low pressure vapor heater, oxygen-eliminating device, booster water pump, high pressure steam water heater, the input end 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 end of oxygen-eliminating device is provided with moisturizing pipeline, the input end 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 exports boiler feed water, the water output terminal of described first order steam trap, the water output terminal of second level steam trap connects the input end of oxygen-eliminating device respectively by pipeline,
Also comprise high pressure steam supplying tube, medium pressure steam supplying tube, described medium pressure steam supplying tube connects the input end of intermediate cylinder, described high pressure steam supplying tube connects the input end of high pressure cylinder respectively by pipeline, the heating input end of first order high pressure vapour vapour heater, the heating input end of second level high pressure vapour vapour heater, the heating input end adding hot output terminal connection high pressure steam water heater of first order high pressure vapour vapour heater, the input end adding hot output terminal connection oxygen-eliminating device of high pressure steam water heater, the heating input end adding hot output terminal connection low pressure vapor heater of second level high pressure vapour vapour heater, the input end adding hot output terminal connection oxygen-eliminating device of low pressure vapor heater.
2. the boiler power generation system utilizing garbage gasifying to burn synthetic gas according to claim 1, it is characterized in that: described high pressure cylinder is provided with the first steam and gets pipe, first steam is got pipe and is got steam to the output terminal of high pressure cylinder, first steam gets the heating input end of the output terminal connection high pressure steam water heater of pipe, described intermediate cylinder is provided with the second steam and gets pipe, described second steam is got pipe and is got steam to the output terminal of intermediate cylinder, and the second steam gets the heating input end of the output terminal connection low pressure vapor heater of pipe.
3. the boiler power generation system utilizing garbage gasifying to burn synthetic gas according to claim 1, it is characterized in that: also comprise boiler body, described boiler body has cyclone combustion chamber, furnace chamber a, furnace chamber b, the lower end of described cyclone combustion chamber arranges smoke inlet, cyclone combustion chamber upper end is the 3rd smoke outlet, 3rd smoke outlet of cyclone combustion chamber upper end is communicated with the upper end of furnace chamber a, described furnace chamber a, the lower end of furnace chamber b is communicated with, the upper end of described furnace chamber b arranges waste gas outlet, described cyclone combustion indoor are circumferentially provided with ringwise water cooled furnace wall, superheater I is provided with in described furnace chamber a, superheater II, described superheater I is positioned at the top of superheater II, vaporizer is provided with in furnace chamber b, the top of boiler body arranges drum, described cyclone combustion chamber, furnace chamber a, furnace chamber b is all positioned at below drum, described drum is provided with carbonated drink import, carbonated drink import is connected by hot output terminal by pipeline and high pressure steam water heater, water separator is provided with in drum, for separating of steam water interface, drum connects the water intake of water cooled furnace wall by the first falling tube, for exporting the isolated water of water separator, drum connects the water intake of vaporizer by the second falling tube, for exporting the isolated water of water separator, described water cooled furnace wall, the steam ouput of vaporizer connects the steam inlet of drum respectively by steam pipe, for the high-temperature steam that refluxes, the saturated vapour outlet of described drum connects superheater I respectively by pipeline, the steam inlet of superheater II, for the high-temperature steam of backflow is inputted in superheater, the steam ouput of described superheater I connects high pressure steam supplying tube and exports high pressure superheated steam, hot steam is pressed through in the steam ouput connection medium pressure steam supplying tube output of described superheater II.
4. the boiler power generation system utilizing garbage gasifying to burn synthetic gas according to claim 2, it is characterized in that: described boiler body has furnace chamber c, the upper end of described furnace chamber c is communicated with the waste gas outlet of furnace chamber b upper end, the lower end of furnace chamber c arranges Waste gas outlet, vapor economizer is provided with in described furnace chamber c, the water intake of described vapor economizer and being communicated with by hot output terminal of high pressure steam water heater, the water outlet of described vapor economizer and the carbonated drink inlet communication of drum.
5. the boiler power generation system utilizing garbage gasifying to burn synthetic gas according to claim 4, it is characterized in that: the Waste gas outlet of furnace chamber c connects flue gas purification system, and described flue gas purification system comprises aeration tower, deduster, induced draught fan, the chimney of connecting successively along discharge directions.
6. the boiler power generation system utilizing garbage gasifying to burn synthetic gas according to claim 1, it is characterized in that: the gasification oven also comprising stoker fired grate formula refuse gasification incinerator, incinerator and circulation air feed system thereof, can seal or be communicated with between gasification oven and incinerator, the below of gasification oven siege and the below of incinerator siege are respectively equipped with at least one independently air compartment, the face arch of described gasification oven, rear arch is arranged respectively secondary for air port, the vault of described gasification oven arranges the first smoke outlet, the smoke inlet of described cyclone combustion chamber is communicated with the first smoke outlet by pipeline, the vault of described incinerator arranges the second smoke outlet,
Described circulation air feed system comprises dust removal apparatus, first blower fan, second blower fan, the inlet end of described dust removal apparatus is connected with the second smoke outlet by pipeline, the outlet side of described dust removal apparatus is connected by the inlet end of pipeline with the first blower fan, the outlet side of described first blower fan connects the house steward of the first manifold, the arm of described first manifold respectively with each air compartment of the below of gasification oven moving hearth, each secondary on gasification oven is communicated with for the smoke inlet of air port and cyclone combustion chamber, each arm of described first manifold arranges the first modulating valve respectively, the suction port of described second blower fan is communicated with air, the air outlet of described second blower fan connects the house steward of the second manifold, the arm of described second manifold respectively with incinerator moving hearth below each air compartment and the inlet end of dust removal apparatus, outlet side is communicated with, each arm of described second manifold arranges the second modulating valve respectively.
7. the boiler power generation system utilizing garbage gasifying to burn synthetic gas according to claim 6, it is characterized in that: described boiler body has furnace chamber c, the upper end of described furnace chamber c is communicated with the waste gas outlet of furnace chamber b upper end, the lower end of furnace chamber c arranges Waste gas outlet, air preheater is provided with in described furnace chamber c, the outlet side of described second blower fan connects the suction port of air preheater, and the air outlet of air preheater connects the house steward of the second manifold.
8. the boiler power generation system utilizing garbage gasifying to burn synthetic gas according to claim 6, it is characterized in that: described cyclone combustion chamber is provided with some combustion airs for air port, described some combustion airs supply air port between smoke inlet, the 3rd smoke outlet, also comprise the 3rd manifold, the house steward of described 3rd manifold is communicated with the air outlet of the second blower fan, each arm of described 3rd manifold is communicated with for air port with some combustion airs respectively, each arm of the 3rd manifold is arranged respectively the 3rd modulating valve.
9. the boiler power generation system utilizing garbage gasifying to burn synthetic gas according to claim 6, it is characterized in that: be provided with common taphole below described furnace chamber a, furnace chamber b, this common taphole is communicated with the burner hearth of gasification oven.
10. the garbage gasifying that utilizes according to claim 6 burns the boiler power generation system of synthetic gas, it is characterized in that: the lower end of described cyclone combustion chamber is provided with the taper taphole that radius from top to bottom diminishes, and this taper taphole is communicated with the burner hearth of gasification oven.
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