CN105588131B - Stoker fired grate formula refuse gasification incinerator and its double boiler energy-saving power generation system - Google Patents

Stoker fired grate formula refuse gasification incinerator and its double boiler energy-saving power generation system Download PDF

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Publication number
CN105588131B
CN105588131B CN201511028025.3A CN201511028025A CN105588131B CN 105588131 B CN105588131 B CN 105588131B CN 201511028025 A CN201511028025 A CN 201511028025A CN 105588131 B CN105588131 B CN 105588131B
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China
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steam
incinerator
furnace
superheater
input
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CN105588131A (en
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周雄
林顺洪
李长江
丁又青
徐�明
杨鲁
柏继松
季炫宇
李伟
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Chongqing Sanfeng Environment Group Co ltd
Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/12Heat utilisation in combustion or incineration of waste

Abstract

The invention discloses a kind of transition heat efficiency losses are smaller, the organic efficiency of heat higher stoker fired grate formula refuse gasification incinerator and its double boiler energy-saving power generation system.Including incinerator, steam generator system, circulation air feed system, electricity generation system, incinerator includes the gasification furnace and incinerator that can be sealed or connect;Steam generator system includes boiler body a, b, boiler body a has cyclone combustion chamber, furnace chamber a, b, boiler body b has furnace chamber d, cyclone dust removal room, set to set in superheater, furnace chamber b in water-cooling wall, furnace chamber a in cyclone combustion chamber, cyclone dust removal room and set evaporator, superheater, evaporator are set in furnace chamber d, the top of two boiler bodies sets drum, cyclone combustion chamber smoke inlet connection gasification furnace exhanst gas outlet, cyclone dust removal room smoke inlet connection incinerator exhanst gas outlet;Electricity generation system includes steam input pipe, steam turbine, generator, steam input pipe connection superheater a, b and steam turbine.

Description

Stoker fired grate formula refuse gasification incinerator and its double boiler energy-saving power generation system
Technical field
The invention belongs to solid waste incineration processing technology field, more particularly to stoker fired grate formula refuse gasification incinerator And its double boiler energy-saving power generation system.
Background technology
Existing technology of garbage disposal mainly has burning, sanitary landfills, compost, waste recovery etc..It is conventional in garbage disposal In technology, burning disposal has reduced training substantially, and innoxious thorough, occupation of land amount is small, and waste heat energy is utilized, and secondary pollution is few The advantages of, meet the strategic requirement of China's sustainable development.But with continuous improvement both at home and abroad to environmental requirement, how to strengthen Control to secondary pollution is particularly important.Therefore, refuse pyrolysis gasification burning technology is gradually shifted onto the road of industrial applications On, primarily now use all kinds of incineration technologies especially for domestic rubbish, gasification burning technology widely industrialize by The technological innovation of domestic garbage disposal industry is brought to regenerate.
For many years, scientific research of the China to the gasification burning technology such as biomass, rubbish, be in progress a lot of, the base in laboratory Plinth research is a lot, also has application study, such as:Rotary kiln type, vertical and fluidized bed type destructive gasifying or temperature gasification and high melting skill Art etc..But Technique Popularizing is applied upper or there is a definite limitation, raw material type, garbage treatment quantity, secondary pollution control and economy Benefit etc. is principal element.
In existing burning process and equipment, fire grate type incinerator is various informative, and its application accounts for whole world waste incineration More than the 80% of the total market size, uses mechanical backstepping fire grate, forwards fire grate or combined fire grate wherein having in body of heater, also adopts With fire grates such as chain-plate type and drum-types.In boiler plant, boiler recovery heat methods are a lot of, technology maturation;Thermal source kind Class is also more, such as:The thermals source such as solar energy, smelting furnace waste heat, coal furnace, fluid bed, fixed bed, rotary kiln, heat is reclaimed using boiler Amount, for generating electricity, heat supply, heating etc..
In summary, typical gasification burning and boiler plant technology maturation, respectively there is its own advantage, but actual in China The problem of needing to solve in and deficiency:
1. for characteristics such as China's house refuse water content height, complicated components, the technology of moving hearth is used, to rubbish Conveying capacity needs emphasis to consider.Fly ash content is higher in flue gas burn simultaneously after, and collecting ash is heavier, deashing repair and maintenance Cycle is short.
2. with being on the increase for refuse production, sanitary fill such as mountain, garbage treatment quantity must be effectively improved, It can just meet the market requirement.
3. in face of strict pollutant emission requirement, secondary pollution control is the technical key problem for needing to solve.
4. in order to effectively increase economic efficiency, in rubbish heat treatment process, the organic efficiency of heat needs to improve.It is existing Rubbish heat treatment technics generally using boiler reclaim waste incineration after high-temperature flue gas heat, produce steam shift onto steam turbine hair Electricity, whole transition heat efficiency losses are larger, handle identical quantity of refuse, relative reduction thermal losses and raising heat exchanger effectiveness can To improve the thermal efficiency.
For example following two patents of invention of existing incinerator:Multiple row sectional drive combined type domestic garbage incinerator (ZL200710092508.9) an open question and in two-stage garbage incinerator (ZL201010268376.2):At rubbish heat Manage model comparision to fall behind, simply dry-burn-burn, solid combustion discharges the process of heat;Thermal chemical reaction is to aoxidize in stove Based on reaction, reduction reaction auxiliary is also easy to produce secondary pollution;When rubbish burns in stove, oxygen quotient is crossed greatly, First air, two Secondary wind infeed amount is big, and dust content is higher in flue gas, larger on heat reclaiming system and smoke processing system influence, easily product Ash, exhaust gas volumn is larger, reduces thermal conversion efficiency;The gasification furnace and incinerator not being separately provided, rubbish can only be handled by several times, Large-scale rubbish continuous gasification burning disposal can not be realized, garbage treatment quantity is smaller.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of stoker fired grate formula refuse gasification incinerator and Its double boiler energy-saving power generation system.Its rubbish conveying capacity is stronger, and garbage treatment quantity is bigger, can reduce thermal losses and raising 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 its double boiler energy-saving power generation system, including incinerator, pot Furnace system, circulation air feed system, electricity generation system,
The incinerator includes grate, and feed hopper, the gasification furnace set gradually on grate along feedstock direction And incinerator, the rear of gasification furnace is the cinder notch that falls of gasification furnace, and incinerator is located at the front lower place that gasification furnace falls cinder notch, incinerator Rear is the slag notch of incinerator, and the grate is provided with garbage pusher device, and the garbage pusher device is located at the lower section of feed hopper, For the rubbish in feed hopper to be pushed into gasification furnace, the lower section of gasification furnace moving hearth and the lower section of incinerator moving hearth At least one air compartment being independently arranged is respectively equipped with, windrow seal section, the gas are provided between the feed hopper, gasification furnace Transition is left on grate part between change stove and incinerator and falls slag section, the transition falls slag section and is provided with residue pusher, uses In the rubbish residue push-in incinerator fallen in by gasification furnace;The gasification furnace, incinerator include furnace shell, mobile stove respectively Bed, the forward and backward side of the gasification furnace falls slag section sealing by windrow seal section, transition respectively, and the transition falls slag section isolation gas Change stove, incinerator, make gasification furnace, incinerator separate;The gasification furnace, incinerator are respectively in arch upward shape, the gasification furnace Face arch, secondary air feed mouthful is set on rear arch respectively, the vault of the gasification furnace sets the first exhanst gas outlet, the incinerator Vault sets and is respectively equipped with igniting combustion supporting hole on the second exhanst gas outlet, the gasification furnace, incinerator;
The steam generator system, which includes boiler body a, boiler body b, the boiler body a, has cyclone combustion chamber, furnace chamber A, furnace chamber b, the lower end of the cyclone combustion chamber set smoke inlet, and the smoke inlet of cyclone combustion chamber and the first exhanst gas outlet connect Logical, cyclone combustion chamber upper end is the 3rd exhanst gas outlet, and the cyclone combustion chamber is described some provided with some combustion air air feeds mouthful Combustion air air feed mouthful is located between smoke inlet, the 3rd exhanst gas outlet, the 3rd exhanst gas outlet and the furnace chamber a of cyclone combustion chamber upper end Upper end connection, the furnace chamber a, furnace chamber b lower end connection, the upper end of the furnace chamber b sets waste gas outlet, the cyclone firing It is indoor circumferentially arranged with being provided with superheater a I, superheater a II, the superheater a in water-cooling wall a, the furnace chamber a in a ring I is provided with evaporator a in superheater a II top, furnace chamber b, and boiler body a top sets drum a, the whirlwind combustion Burning room, furnace chamber a, furnace chamber b are respectively positioned on below drum a, and the drum a is provided with carbonated drink import, and drum a passes through water separator Steam water interface is separated, drum a delivery port connects water-cooling wall a, evaporator a water inlet by pipeline respectively, for exporting The water that water separator is isolated, the water-cooling wall a, evaporator a venthole enter vapour by steam pipe connection drum a respectively Mouthful, for the high-temperature steam that flows back, the saturated vapor outlet of the drum a connects superheater a I, superheater a II by pipeline respectively Air intake, for the high-temperature steam of backflow to be inputted in superheater a I, superheater a II, the venthole of the superheater a I is defeated Go out high pressure superheated steam, vapours is pressed through in the venthole output of the superheater a II;
The boiler body b has cyclone dust removal room, furnace chamber d, the lower end of the cyclone dust collectors and the second exhanst gas outlet Connection, the upper end of cyclone dust removal room is connected with furnace chamber d upper end, circumferentially arranged with water cooling in a ring in the cyclone dust removal room Superheater b I, superheater b II, evaporator b are disposed with from top to bottom in wall b, the furnace chamber d, and boiler body b top is set Drum b is put, the cyclone dust removal room, furnace chamber d are respectively positioned on below drum b, and the drum b is provided with carbonated drink import, and drum b passes through Water separator separates steam water interface, and drum b delivery port by pipeline by connecting water-cooling wall b, evaporator b respectively Water inlet, for exporting the water that water separator is isolated, the water-cooling wall b, evaporator b venthole pass through steam pipe respectively Drum b air intake is connected, for the high-temperature steam that flows back, the saturated vapor outlet of the drum b was connected by pipeline respectively Hot device b I, superheater b II air intake, for the high-temperature steam of backflow to be inputted in superheater b I, superheater b II, the mistake Hot device b I venthole output high pressure superheated steam, vapours is pressed through in the venthole output of the superheater b II;
The circulation air feed system includes the first blower fan, the second blower fan, the inlet end of first blower fan by pipeline with Furnace chamber d lower end connection, the flue gas for extracting furnace chamber d discharges, the outlet side of first blower fan is connected by pipeline and furnace chamber b Logical, the air inlet and atmosphere of second blower fan, the gas outlet of second blower fan connect the first manifold, the second discrimination respectively The house steward of pipe, the branch pipe of first manifold respectively with each air compartment and gasification furnace below gasification furnace moving hearth Each secondary air feed mouthful connection, the branch pipe of second manifold respectively with each air compartment below incinerator moving hearth and rotation Some combustion air air feeds mouthful connection of wind combustion chamber;
The electricity generation system includes steam turbine and the generator being connected with turbine power, and the steam turbine includes High-pressure cylinder, intermediate cylinder, low-pressure cylinder,
First order steam trap, first order high pressure vapour vapour heater, institute are set between the high-pressure cylinder, intermediate cylinder The output end of the input and high-pressure cylinder of stating first order steam trap is connected by pipeline, the steaming of first order steam trap Vapour output end is connected with the heated input of first order high pressure vapour vapour heater by pipeline, the first order high pressure vapour vapour heating The steam input by hot output terminal and intermediate cylinder of device is connected by pipeline, and is set between intermediate cylinder, low-pressure cylinder Two grades of steam traps, second level high pressure vapour vapour heaters, the input and intermediate cylinder of the second level steam trap are defeated Go out end to connect by pipeline, the steam output end of second level steam trap and second level high pressure vapour vapour heater by heat input End is connected by pipeline, and the steam input by hot output terminal and low-pressure cylinder of the second level high pressure vapour vapour heater passes through Pipeline is connected;
The steam output end of low-pressure cylinder is sequentially connected condenser, water pump, low pressure vapor heater, deoxygenation by pipeline Device, booster water pump, high pressure steam water heater, the heated input of the low pressure vapor heater are connected with water pump, low pressure vapor Heater is connected by hot output terminal with oxygen-eliminating device, and the input of oxygen-eliminating device is provided with moisturizing pipeline, the high pressure steam water heater Heated input be connected with booster water pump, high pressure steam water heater is passed through pipeline by hot output terminal and connects drum a, drum b Carbonated drink import, the water output end of the first order steam trap, the water output end of second level steam trap pass through respectively Pipeline connects the input of oxygen-eliminating device;
Also include high steam input pipe, middle pressure steam input pipe, the input of medium pressure steam input pipe was connected Hot device a II, superheater b II venthole, the output end of middle pressure steam input pipe connect the input of intermediate cylinder, the high pressure Input connection superheater a I, superheater b I venthole of steam input pipe, the output end point of the high steam input pipe Do not pass through the input of pipeline connection high-pressure cylinder, heating input, the second level high pressure vapour of first order high pressure vapour vapour heater The heating input of vapour heater, the heating output end of first order high pressure vapour vapour heater connects the heating of high pressure steam water heater Input, the heating output end of high pressure steam water heater connects the input of oxygen-eliminating device, second level high pressure vapour vapour heater plus Hot output terminal connects the heating input of low pressure vapor heater, the heating output end connection oxygen-eliminating device of low pressure vapor heater Input;
The high-pressure cylinder takes pipe provided with the first steam, and the first steam takes pipe to take steam to the output end of high-pressure cylinder, First steam takes the output end of pipe to connect the heating input of high pressure steam water heater, and medium pressure cylinder is provided with the second steam Pipe is taken, second steam takes pipe to take steam to the output end of intermediate cylinder, and the second steam takes the output end of pipe to connect low-pressure steam The heating input of water heater;Also include high pressure vapour gas heat exchanger, low-pressure steam gas heat exchanger, the high pressure vapour gas heat exchanger Heating passage is connected to the first steam by pipeline and taken between pipe, oxygen-eliminating device input, the heating of the low-pressure steam gas heat exchanger Passage is connected to the second steam by pipeline and taken between pipe, oxygen-eliminating device input, heated passage, the high pressure of low-pressure steam gas heat exchanger The heated passage of vapour gas heat exchanger is series on the house steward of the first manifold, and the high pressure vapour gas heat exchanger exchanges heat positioned at low-pressure steam gas The downstream of device.
In order to adjust the air quantity on each branch pipe respectively, it is preferable that set first respectively on each branch pipe of first manifold The second regulating valve is set respectively on regulating valve, each branch pipe of second manifold.
In order to which the flue gas discharged to furnace chamber b carries out further heat recovery, heat recovery efficiency is improved, it is preferable that The upper end that the boiler body a has furnace chamber c, the furnace chamber c is connected with the waste gas outlet of furnace chamber b upper ends, and furnace chamber c lower end is set Put Waste gas outlet.
Further, air preheater, the outlet side connection air preheater of second blower fan are provided with the furnace chamber c Air inlet, the gas outlet of air preheater connects the first manifold, the house steward of the second manifold.
Further, economizer is provided with the furnace chamber c, the water inlet of the economizer and the delivery port of booster water pump connect Logical, the delivery port of the economizer passes through pipeline and drum a, drum b carbonated drink inlet communication respectively.
In order to which the flue gas discharged to furnace chamber c carries out harmless treatment, further, the Waste gas outlet of the furnace chamber c connects Connect flue gas purification system, aeration tower that the flue gas purification system includes being sequentially connected in series along discharge directions, deduster, air-introduced machine, Chimney.
In order to discharge the waste residue that flue gas deposition is produced in furnace chamber a, furnace chamber b, and prevent waste residue effusion from producing pollution, preferably Common slag notch is provided with below ground, the furnace chamber a, furnace chamber b, the common slag notch is connected with the burner hearth of gasification furnace.
In order to discharge the waste residue that flue gas deposition is produced in cyclone firing room, and prevent waste residue effusion from producing pollution, it is preferable that The lower end of the cyclone combustion chamber is provided with the stove of the taper slag notch that radius diminishes from top to bottom, the taper slag notch and gasification furnace Thorax is connected.
In order that the high-temperature flue gas produced after burning is easily drained, and beneficial to the installation of pipeline, it is preferable that the flue gas Entrance, the 3rd exhanst gas outlet are located at the opposite side of cyclone combustion chamber circumferential wall;3rd exhanst gas outlet is justified along cyclone combustion chamber Perisporium is radially or tangentially set.
In order to prevent that wind is altered between gasification furnace, incinerator, it is preferable that the transition fall slag section on be provided with it is to be opened/closed every From door, the isolating door is used to separate gasification furnace, incinerator.
By adopting the above-described technical solution, the present invention has the advantages that:
Gasification furnace, the incinerator of incinerator are provided separately, and the vault of gasification furnace sets the first exhanst gas outlet, incinerator Vault set the second exhanst gas outlet, beneficial to according to flue gas quality difference handle flue gas respectively, while being conducive to removing flue gas Dirt, can provide the flue gas of higher quality, make the utilization rate of flue gas higher, and the waste residue of discharge is less.
First blower fan extracts the waste gas discharged from furnace chamber d, is introduced into furnace chamber b, makes full use of boiler body b not utilize Complete waste heat, also reaches the purpose that dedusting prevents flue dust from overflowing by cyclone dust removal room;Second blower fan passes through air preheater profit With the waste gas discharged from furnace chamber c, the waste heat for making full use of boiler body a not utilize.The wind of second blower fan bulging passes through first Manifold provides First air, Secondary Air for gasification furnace, rubbish in gasification furnace is produced gasification, gasification furnace is interior to contain a certain amount of synthesis gas Flue gas, from the discharge of the first exhanst gas outlet, into cyclone combustion chamber processing links, cyclone combustion chamber provides high-temperature flue gas.Second The wind of blower fan bulging provides First air by the second manifold for incinerator, and provides combustion air for cyclone combustion chamber, makes to burn Stove residue is fully burnt, and the synthesis flue gas in cyclone firing room fully burns.The stoker fired grate formula refuse gasification of this structure is burned Stove garbage treatment quantity is big, and the rubbish bed of material can undergo the stage that burns of drying, gasification and residue, adaptation China on stoker fired grate The characteristics such as house refuse water content height, complicated component, improve the energy conversion efficiency and reduction flue gas in garbage processing procedure Middle pollutant discharge amount, effectively prevents secondary pollution, and can realize large-scale rubbish continuous gasification burning disposal, it is ensured that rubbish Rubbish gasification burning effect and lime-ash clinker ignition loss, it is relative to reduce thermal losses and improve heat exchanger effectiveness, improve the thermal efficiency.
This steam generator system employs the structure of two boilers, fully the synthesis flue gas of the first exhanst gas outlet of burning release, profit The heat discharged with smoke combustion, and the heat for making full use of the second exhanst gas outlet to discharge, heat transfer loss are less, recuperation of heat effect Rate is higher.Synthesis gas is more abundant in cyclone firing Indoor Combustion, and the temperature produced of burning is higher, and the water-cooling wall a of annular is pacified On cyclone combustion chamber, relatively reduce thermal losses and improve heat exchanger effectiveness.The origin of heat that this steam generator system is reclaimed In the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas enters cyclone combustion chamber, while into cyclone firing room Tangential air-supplied combustion-supporting flammable synthesis gas, flue gas sequentially passes through cyclone combustion chamber, furnace chamber a, furnace chamber b, economizer and air Preheater.The pre- hot condensed water of economizer is recycled, pre- hot condensed water enters two boilers, and condensed water is in two water-cooling walls and two Heated in evaporator, formation saturated vapor enters saturated vapor after two drums, steam-water separation and enters two superheaters, adds again Thermosetting superheated steam is exported, available for generating electricity, heat supply, heating etc..Present inventive concept is novel, using cyclone-burning method, subtracts Fly ash content in flue gas is lacked;Syngas combustion temperature is high, and gas residence time is long, and pollutant is effectively decomposed, and reduces dirty Thing discharge is contaminated, synthesis gas burning disposal and heat recovery and utilization after rubbish continuous gasification is realized.
Steam turbine can not be all converted to water by condenser using complete steam, and absorb the heat of steam release, be removed The main function of oxygen device is exactly that the oxygen and other gases in boiler feedwater are removed with it, it is ensured that the quality of feedwater, pressurized water Pump can improve hydraulic pressure, it is ensured that to the water supply capacity of water input system, and electricity generation system heats low-grade by using high-grade steam Steam and condensed water, improve utilization rate of waste heat, reduce thermal losses.Heat exchanger can make full use of steam output device remaining The wind of the blower fan of waste-heat second bulging.
Brief description of the drawings
Fig. 1 is structural representation of the invention;
Fig. 2 is the structural representation of cyclone combustion chamber;
Fig. 3 is Fig. 2 schematic top plan view;
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.
Reference
1 is incinerator, and 101 be grate, and 102 be feed hopper, and 103 be gasification furnace, and 104 be incinerator, and 105 be stove Bed, 106 be garbage pusher device, and 107 be an air compartment, and 108 be windrow seal section, and 109 be that transition falls slag section, and 110 push away for residue Glassware, 111 be isolating door, and 112 be the first exhanst gas outlet, and 113 be the second exhanst gas outlet, and 114 be igniting combustion supporting hole, and 115 be two Secondary air feed mouthful, 116 be slag notch, and 117 be to fall cinder notch;
202 be the first blower fan, and 203 be the second blower fan, and 204 be the first manifold, and 205 be the second manifold;
3 be cyclone combustion chamber, and 301 be combustion chamber ignition combustion-supporting hole, and 302 be taper slag notch, and 303 be smoke inlet, 304 It is combustion air air feed mouthful for the 3rd exhanst gas outlet, 305;
4 be boiler body a, and 402 be furnace chamber a, and 403 be furnace chamber b, and 404 be furnace chamber c, and 405 be water-cooling wall a, and 406 be overheat Device a I, 409 be superheater a II, and 407 be evaporator a, and 408 be drum a, and 418 be economizer, and 419 be flue gas purification system, 420 It is deduster for aeration tower, 421,422 be air-introduced machine, and 423 be chimney, and 424 be air preheater;
5 be boiler body b, and 501 be furnace chamber d, and 502 be cyclone dust removal room, and 503 be water-cooling wall b, and 504 be superheater b I, 507 be superheater b II, and 505 be evaporator b, and 506 be drum b;
6 be electricity generation system, and 601 be high-pressure cylinder, and 602 be intermediate cylinder, and 603 be low-pressure cylinder, and 604 be first order steam Separator, 605 be first order high pressure vapour vapour heater, and 606 be second level steam trap, and 607 be that second level high pressure vapour vapour adds Hot device, 608 be condenser, and 609 be water pump, and 610 be oxygen-eliminating device, and 611 be booster water pump, and 612 be moisturizing pipeline, and 613 be generating Machine, 614 be low pressure vapor heater, and 615 be high pressure steam water heater, and 616 be high steam input pipe, and 617 be middle pressure steam Input pipe, 618 be that the first steam takes pipe, and 619 be that the second steam takes pipe, and 620 be high pressure vapour gas heat exchanger, and 621 be low-pressure steam gas Heat exchanger.
Embodiment
Referring to Fig. 1 to Fig. 6, be stoker fired grate formula refuse gasification incinerator and its double boiler energy-saving power generation system it is a kind of compared with Good embodiment, including incinerator 1, steam generator system, circulation air feed system, electricity generation system 6.
It is stoker fired grate formula refuse gasification incinerator referring to Fig. 6, including grate 101, and along charging on grate 101 Feed hopper 102, gasification furnace 103 and incinerator 104 that direction is set gradually, rear the slagging tap for incinerator 104 of incinerator 104 Mouth 116, the incinerator 104 is provided with cinder notch 117, and the slag notch 116 of the incinerator 104 falls cinder notch positioned at incinerator 117 underface, this sealing structure effect is good, can effectively hold reduction pollutant discharge amount.Gasification furnace 103 is mainly to rubbish Carbon-containing part gasified, and discharge flammable gasification flue gas and rubbish residue, incinerator 104 is substantially carried out the burning of carbon residue Processing, and discharge innoxious lime-ash.The siege 105 of gasification furnace 103 and incinerator 104 is using the machinery of the independent driving of segmentation Grate-type moving hearth 105, the fire grate of stoker fired grate formula moving hearth 105 is the weight before and after moving grate plate and fixed grate plate It is folded, it is spaced collect form, adjacent multigroup moving grate plate is connected by pull bar, is driven using a set of drive device.Machine Tool grate-type moving hearth 105 is as the carrier of conveying garbage, and embodiments thereof can be all types of moving hearths 105, such as chain Board-like, drum-type, multisection type fire grate system etc..
The grate 101 is provided with garbage pusher device 106, and the garbage pusher device 106 is located at the lower section of feed hopper 102, For the rubbish in feed hopper 102 to be pushed into gasification furnace 103, the lower section of the moving hearth 105 of gasification furnace 103 and incinerator 104 moving hearths 105 are respectively arranged below with least one air compartment 107 being independently arranged, the present embodiment, with gasification furnace The corresponding fire grate of an air compartment 107 of 103 first halfs, drive device, as the dryer section of the siege 105 of gasification furnace 103, with gasification The latter half of corresponding fire grate of an air compartment 107 of stove 103, drive device as the siege 105 of gasification furnace 103 gasification section.Gasification The 1-2 independent air feeds of air compartment 107 can be respectively adopted in dryer section, the gasification section of the siege 105 of stove 103, can also distinguish Using the 3-4 independent air feeds of air compartment 107.Certainly, fire grate, drive device and an air compartment 107 can not be also correspondingly arranged, Preferably adjust bed of material movement and air distribution relation on moving hearth 105.Incinerator 104 can be using 1-4 independent First airs The air feed of room 107, burns rear lime-ash and is excluded from slag notch, into next step treatment process.
Windrow seal section 108 is provided between the feed hopper 102, gasification furnace 103, the work of garbage pusher device 106 is entered to be located in place In in windrow seal section 108, garbage raw material is put into from feed hopper 102 and fallen, and garbage pusher device 106 is retreated, then is promoted, reciprocal many Secondary pusher makes the entrance of gasification furnace 103 be in windrow sealing state in the formation windrow of windrow seal section 108, and enhancing gasification furnace 103 is close Effect is sealed, garbage pusher device 106 and the easy leakage problem of feed hopper 102 is solved.When needing the complete prepurging to dispose all rubbish, The forward impelling half stroke again of garbage pusher device 106, rubbish is pushed completely into gasification furnace 103, the entrance of gasification furnace 103 is lost Windrow sealing effectiveness.Transition is left on the part of grate 101 between the gasification furnace 103 and incinerator 104 and falls slag section 109, institute State transition and fall slag section and 109 be provided with residue pusher 110, the rubbish residue for will be fallen in gasification furnace 103 is pushed into incinerator In 104, transition falls slag section 109 and can be at windrow sealing state when accumulating rubbish residue, strengthens the sealing effectiveness of gasification furnace 103, The problem of solving string wind between gasification furnace 103, incinerator 104.In the present embodiment, the transition falls in slag section 109 that be provided with can The isolating door 111 of opening and closing, the isolating door 111 is used to separate gasification furnace 103, incinerator 104.Furnace lifting initial stage or need control When altering wind between gasification furnace 103 and incinerator processed, isolating door 111 is closed, a certain amount of residue formation windrow is stacked when falling slag section After sealing, isolating door 111 can be kept to open, coordinate to use with the residue pusher 110 that lower section is set, to realize that rubbish is continuous Gasification burning processing.
The upper end of the gasification furnace 103, the upper end of incinerator 104 are respectively in the shape that arches upward, and the face arch of the gasification furnace 103 is Flat construction, or, the face arch of gasification furnace 103 is inclined upwardly structure for rear end.The vault of the gasification furnace 103 sets the first cigarette Gas outlet 112, the vault of the incinerator 104 sets the second exhanst gas outlet 113, and the upper end of gasification furnace 103 is arched upward, burnt Igniting combustion supporting hole 114 is respectively equipped with the arching upward of the upper end of stove 104.Flue gas gasify from the first exhanst gas outlet 112, the second exhanst gas outlet 113 exclude, and the furnace cavity of gasification furnace 103 is relatively reduced compared with traditional waste incinerator;Forward and backward arch and moving hearth 105 Relative position diminishes, and reduces the space of incinerator occupancy, is also easier to insulation, reduces the amount of leakage of heat, be conducive to rubbish Rubbish fully gasifies.Secondary air feed mouthful 115 is set respectively on the face arch of the gasification furnace 103, rear arch.
Referring to Fig. 1 to Fig. 3, the steam generator system includes boiler body a4, boiler body b5, and the boiler body a4 has Cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403, furnace chamber c404, the lower end of the cyclone combustion chamber 3 set smoke inlet 303, The smoke inlet 303 of the cyclone combustion chamber 3 is connected by pipeline with the first exhanst gas outlet 112 of gasification furnace 103, cyclone firing The upper end of room 3 is the 3rd exhanst gas outlet 304, and the smoke inlet 303, the 3rd exhanst gas outlet 304 are located at the circumferential wall of cyclone combustion chamber 3 Opposite side, the top of cyclone combustion chamber 3 sets combustion chamber ignition combustion-supporting hole 301.In order that flue gas, combustion air are in cyclone firing Be sufficiently mixed in room 3, burn after discharged from the 3rd exhanst gas outlet 304, the cyclone combustion chamber 3 be provided with some combustion air air feeds Mouth 305, some combustion air air feeds mouthful 305 are located between smoke inlet 303, the 3rd exhanst gas outlet 304.The smoke inlet 303rd, the 3rd exhanst gas outlet 304, combustion air air feed mouthful 305 are radially or tangentially set along the circumferential wall of cyclone combustion chamber 3.Cyclone firing 3rd exhanst gas outlet 304 of the upper end of room 3 is connected with furnace chamber a402 upper end, the furnace chamber a402, furnace chamber b403 lower end connection, The upper end of the furnace chamber b403 sets waste gas outlet, and the lower end of the cyclone combustion chamber 3 is provided with the cone that radius diminishes from top to bottom Shape slag notch 302, the taper slag notch 302 is connected with the burner hearth of gasification furnace 103.Set below the furnace chamber a402, furnace chamber b403 There is common slag notch, the common slag notch is connected with the burner hearth of gasification furnace 103.In the present embodiment, the common slag notch And afterbody changeover portion of the taper slag notch 302 with the burner hearth of gasification furnace 103 is connected.
It is circumferentially with water-cooling wall a405, the furnace chamber a in a ring and was provided with along inwall in the cyclone combustion chamber 3 Hot device a I 406, superheater a II 409, the superheater a I 406, which is located in superheater a II 409 top, furnace chamber b403, to be provided with Evaporator a407, the top of boiler body 4 sets drum a408, the cyclone combustion chamber 3, furnace chamber a402, the equal positions of furnace chamber b403 Below drum a408, the drum a408 is provided with carbonated drink import, and vapour is provided with steam water interface, drum a408 for inputting Water separation device, for separating steam water interface, drum a408 delivery port by respectively by pipeline connect water-cooling wall a405, Evaporator a407 water inlet, for exporting the water that water separator is isolated, the water-cooling wall a405, evaporator a407 Venthole connects drum a408 air intake by steam pipe respectively, and for the high-temperature steam that flows back, the saturated vapor of the drum a goes out Mouth connects superheater a I 406, superheater a II 409 air intake by pipeline respectively, for the high-temperature steam of backflow to be inputted In hot device a I 406, superheater a II 409, the venthole output high pressure superheated steam of the superheater a I 406, the superheater a Vapours is pressed through in II 409 venthole output;
The boiler body b5 has cyclone dust removal room 502, furnace chamber d501, the lower end of the cyclone dust collectors and the second cigarette Gas outlet, the upper end of cyclone dust removal room 502 is connected with furnace chamber d501 upper end, in the cyclone dust removal room 502 circumferentially Provided be disposed with from top to bottom in water-cooling wall b503, the furnace chamber d in a ring superheater b I 504, superheater b II 507, Evaporator b, boiler body b5 top set drum b506, the cyclone dust removal room 502, furnace chamber d501 to be respectively positioned on drum b506 Lower section, the drum b506 is provided with carbonated drink import, and drum b506 separates steam water interface, drum by water separator B506 delivery port is by respectively by pipeline connection water-cooling wall b503, evaporator b505 water inlet, for exporting carbonated drink point The water isolated from device, the water-cooling wall b503, evaporator b505 venthole connect drum b506's by steam pipe respectively Air intake, for the high-temperature steam that flows back, the saturated vapor outlet of the drum b connects superheater b I 504, mistake by pipeline respectively Hot device b II 507 air intake, for the high-temperature steam of backflow to be inputted in superheater b I 504, superheater b II 507, the mistake Hot device b I 504 venthole output high pressure superheated steam, vapours is pressed through in the venthole output of the superheater b II 507.
Referring to Fig. 4, electricity generation system 6 includes steam turbine and the generator 613 being connected with turbine power, the steam turbine Including including high-pressure cylinder 601, intermediate cylinder 602, low-pressure cylinder 603, being set between the high-pressure cylinder 601, intermediate cylinder 602 Put first order steam trap 604, first order high pressure vapour vapour heater 605, the input of the first order steam trap 604 It is connected with the output end of high-pressure cylinder 601 by pipeline, steam output end and the first order high pressure of first order steam trap 604 The heated input of vapour vapour heater 605 is connected by pipeline, the first order high pressure vapour vapour heater 605 by hot output terminal It is connected with the steam input of intermediate cylinder 602 by pipeline, second level water is set between intermediate cylinder 602, low-pressure cylinder 603 Vapour separator 606, second level high pressure vapour vapour heater 607, the input and intermediate cylinder of the second level steam trap 606 602 output ends are connected by pipeline, steam output end and the second level high pressure vapour vapour heater of second level steam trap 606 607 heated input is connected by pipeline, the second level high pressure vapour vapour heater 607 by hot output terminal and low-pressure cylinder 603 steam input is connected by pipeline.
The steam input of low-pressure cylinder 603 is sequentially connected condenser 608, water pump 609, low pressure vapor by pipeline and heated Device 614, oxygen-eliminating device 610, booster water pump 611, high pressure steam water heater 615, the low pressure vapor heater 614 by heat input End is connected with water pump 609, and low pressure vapor heater 614 is connected by hot output terminal with oxygen-eliminating device 610, the input of oxygen-eliminating device 610 End is provided with moisturizing pipeline 612, and the heated input of the high pressure steam water heater 615 is connected with booster water pump 611, high pressure carbonated drink Heater 615 by hot output terminal export boiler feed water, the water output end of the first order steam trap 604, second level water The water output end of vapour separator 606 connects the input of oxygen-eliminating device 610 by pipeline respectively.
Also include high steam input pipe, middle pressure steam input pipe, the input of medium pressure steam input pipe 617 is connected Superheater a II 409, superheater b II 507 venthole, the output end of middle pressure steam input pipe connect the input of intermediate cylinder, Input connection superheater a I 406, superheater b I 504 venthole of the high steam input pipe, the high steam are defeated The heating for entering input, first order high pressure vapour vapour heater 605 that pipe 616 connects high-pressure cylinder 601 by pipeline respectively is inputted End, the heating input of second level high pressure vapour vapour heater 607, the heating output end of first order high pressure vapour vapour heater 605 connect The heating input of high pressure steam water heater 615 is connect, the heating output end connection oxygen-eliminating device 610 of high pressure steam water heater 615 Input, the heating input of the heating output end connection low pressure vapor heater 614 of second level high pressure vapour vapour heater 607, The heating output end of low pressure vapor heater 614 connects the input of oxygen-eliminating device 610.
The high-pressure cylinder 601 takes pipe 618 provided with the first steam, and the first steam takes pipe 618 to the defeated of high-pressure cylinder 601 Go out end and take steam, the first steam takes the output end of pipe 618 to connect the heating input of high pressure steam water heater 615 by pipeline, Medium pressure cylinder 602 takes pipe 619 provided with the second steam, and the second steam takes the output end of pipe 619 to intermediate cylinder 602 to take steaming Vapour, the second steam takes the output end of pipe 619 to connect the heating input of low pressure vapor heater 614 by pipeline.Also include height Vapour gas heat exchanger 620, low-pressure steam gas heat exchanger 621 are pressed, the heated passage of the high pressure vapour gas heat exchanger 620 is connected by pipeline Taken in the first steam between pipe 618, the input of oxygen-eliminating device 610, the heated passage of the low-pressure steam gas heat exchanger 621 passes through pipeline It is connected to the second steam to take between pipe 612, the input of oxygen-eliminating device 610, heating passage, the high pressure vapour of low-pressure steam gas heat exchanger 621 The heating Tandem of gas heat exchanger 620 is on the house steward of the first manifold, and the high pressure vapour gas heat exchanger 620 is located at low-pressure steam gas The downstream of heat exchanger 621.
Referring to Fig. 1, the circulation air feed system includes the first blower fan 202, the second blower fan 203, first blower fan 202 Inlet end is connected by pipeline with furnace chamber d lower end, and the outlet side of first blower fan 202 is connected by pipeline with furnace chamber b, institute The air inlet and atmosphere of the second blower fan 203 are stated, the gas outlet of second blower fan 203 connects the first manifold 204, respectively The house steward of two manifolds 205, the branch pipe of first manifold 204 respectively with each air compartment below gasification furnace moving hearth and Each secondary air feed mouthful connection on gasification furnace, the branch pipe of second manifold 205 respectively with it is each below incinerator moving hearth Set respectively on some combustion air air feeds mouthful connection of air compartment and cyclone combustion chamber, each branch pipe of first manifold 204 Put and second regulating valve is set respectively on the first regulating valve, each branch pipe of second manifold 205.
Referring to Fig. 1, Fig. 5, in the present embodiment, the upper end of the furnace chamber c404 connects with the waste gas outlet of furnace chamber b403 upper ends Logical, furnace chamber c404 lower end sets and economizer 418 is provided with Waste gas outlet, the furnace chamber c404, and the economizer 418 enters The mouth of a river is connected with the delivery port of booster water pump 416, the delivery port of the economizer 418 and drum a408 carbonated drink inlet communication. Furnace chamber c404 Waste gas outlet connection flue gas purification system 419, the flue gas purification system 419 is included along discharge directions successively Aeration tower 420, deduster 421, air-introduced machine 422, the chimney 423 of series connection.It is provided with air preheater in the furnace chamber c, described the The outlet sides of two blower fans 203 connects the air inlet of air preheater, and the gas outlet of air preheater connects the first manifold 204, the The house steward of two manifolds 205.
The origin of heat that boiler body a is reclaimed is in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, and synthesis gas flue gas enters Enter cyclone combustion chamber, while the tangential air-supplied combustion-supporting flammable synthesis gas into cyclone combustion chamber, flue gas sequentially passes through whirlwind Combustion chamber, furnace chamber a, furnace chamber b, economizer and air preheater.
The origin of heat that boiler body b is reclaimed is in the high-temperature flue gas after residual burning after refuse gasification, and flue gas enters whirlwind Dirt pocket, tangential to enter, tangential outlet, flue gas sequentially passes through cyclone dust removal room, furnace chamber d, then by high-temperature blower by flue gas Introduce furnace chamber b.
The pre- hot condensed water of economizer is recycled, pre- hot condensed water enters boiler a and boiler b, and condensed water is in water-cooling wall and steaming Send out in device and heat, formation saturated vapor enters saturated vapor after drum, steam-water separation and enters high-pressure superheater and middle pressure superheater, Superheated steam output generating is thermally formed again, also is available for heat, heating etc..
Steam turbine gradient energy-saving electricity generation system:High steam from Boiler High Pressure superheater enters high-pressure cylinder and promotes vapour Turbine generates electricity;High-pressure cylinder steam (vapor) outlet connects first order steam-water separator, and steam adds into first order high pressure vapour vapour after separation Hot device, outlet middle pressure steam is sent out with pressing the middle pressure steam of superheater to collect in boiler into intermediate cylinder pushing turbine Electricity;Intermediate cylinder steam (vapor) outlet connects second level steam-water separator, and steam enters second level high pressure vapour vapour heater after separation, goes out Mouth low-pressure steam generates electricity into low-pressure cylinder pushing turbine.
Take steam to collect with high steam of the first order high pressure vapour vapour heater after in high-pressure cylinder and enter high pressure Condensed water is formed after steam water heater and high pressure vapour hot-air heater, heating condensate water and air and returns oxygen-eliminating device;In intermediate cylinder Steam is taken to collect with high steam of the second level high pressure vapour vapour heater after into low pressure vapor heater and low-pressure steam gas Condensed water is formed after heater, heating condensate water and air and returns oxygen-eliminating device;The condensed water isolated in steam-water separator returns deoxygenation Device.
Low-pressure cylinder steam (vapor) outlet connects condenser, enters low pressure vapor heater by water pump pressurization after steam is condensed, Condensed water formation after heating enters oxygen-eliminating device;Utilization of condensed water booster water pump pressurizes after deoxygenation, feeds high pressure steam water heater, The condensed water of heating is heated again into economizer, enters back into boiler part.
Low-grade steam, condensation water and air are heated with high-grade steam, utilization rate of waste heat is improved, reduces loss.
Air feed system is circulated to the waste disposal method after stoker fired grate formula refuse gasification incinerator air feed, this method press with Lower step is carried out:
Step A, the gate for closing stoker fired grate formula refuse gasification incinerator 1 and atmospheric vent, start mechanical grate-type rubbish Rubbish incinerator 1, puts into feed hopper 102, the pusher back and forth of garbage pusher device 106 will be from feed hopper 102 by garbage raw material The garbage raw material fallen is pushed into the windrow seal section 108 between feed hopper 102, gasification furnace 103, forms windrow seal section 108 Windrow sealing state, unnecessary rubbish falls into the moving hearth 105 of gasification furnace 103, and the moving hearth 105 of gasification furnace 103 works, Rubbish is conveyed into transition and falls slag section 109, transition is fallen the rubbish in slag section 109 and pushed away by the pusher back and forth of residue pusher 110 Enter in incinerator 104, the work conveying garbage of moving hearth 105 of incinerator 104, until rubbish is in gasification furnace 103, incinerator 104 moving hearth 105 is accumulated to required thickness:0.6-0.8m, during baker, the rubbish accumulated can protect mobile stove Bed 105, prevents scaling loss siege 105.Stop feeding intake to feed hopper 102, the moving hearth 105 of gasification furnace 103 and incinerator 104 stops Only work, then, with start-up burner by the igniting combustion supporting hole 114 of gasification furnace 103 and incinerator 104 respectively with gasification furnace 103 and the burner hearth of incinerator 104 communicate, in the presence of start-up burner, gasification furnace 103 and incinerator 104 are carried out furnace lifting, Baker, treats that this process stabilization is completed, gasification furnace 103 and the burner hearth of incinerator 104 is reached 600-700 DEG C of predetermined temperature;Baker Purpose be in order to remove the Natural Water and the crystallization water in lining, in order to avoid when going into operation due to furnace temperature rise it is too fast, moisture content is a large amount of Expansion causes body of heater spalling, bubbling or deformation even furnace wall to collapse, and influences the intensity and service life of heating furnace furnace wall.
Step B, startup regulation circulation air feed system 2, regulation gasification furnace 103, incinerator 104 and circulation air feed system 2 Technological parameter (pusher speed, fire grate speed, wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, Negative pressure, thickness of feed layer etc. in stove), fed intake to feed hopper 102, the work conveying garbage of moving hearth 105 of gasification furnace 103, rubbish Burning is proceeded by the burner hearth of gasification furnace 103, rubbish residue falls in transition to be accumulated to form windrow sealing at slag section 109, is made The stove chamber inner combustion state temperature of gasification furnace 103 is stabilized to more than 850 DEG C, the work output combustion of moving hearth 105 of incinerator 104 Rubbish residue after cinder.
Step C, regulation gasification furnace 103, incinerator 104 and each technological parameter (the pusher speed for circulating air feed system 2 Degree, fire grate speed, wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, negative pressure, thickness of feed layer in stove Deng), gasification furnace 103 gradually gasifies to rubbish, and gasification temperature is stable between 700-800 DEG C, makes the stable production of gasification furnace 103 The high-temperature flue gas of the raw synthesis gas containing 10%-20%, the stable progress low temperature of the vaporized state of gasification furnace 103, middle temperature or high-temperature gasification are equal Can.Make the fired state temperature stabilization of incinerator 104 to more than 850 DEG C, realize rubbish continuous gasification burning disposal;It need to adjust simultaneously Each technological parameter of cyclone combustion chamber 3, makes the temperature stabilization of the 3rd exhanst gas outlet of cyclone combustion chamber 3 304 to more than 850 DEG C.
It step D, need to overhaul or during blowing out, stop feeding intake, regulation gasification furnace 103, incinerator 104 and circulation air feed system 2 technological parameter, makes gasification furnace 103 be gradually restored to fired state, after rubbish and rubbish residue are burnt, and closes 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 adjusted simultaneously, make gasification furnace 103 are gradually restored to fired state.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be Various changes are made to it in form and in details, without departing from claims of the present invention limited range.

Claims (10)

1. a kind of double boiler energy-saving power generation system based on stoker fired grate formula refuse gasification incinerator, including incinerator, pot Furnace system, circulation air feed system, electricity generation system, it is characterised in that:
The incinerator includes grate, and feed hopper, gasification furnace and the combustion set gradually on grate along feedstock direction Cinder stove, the rear of gasification furnace is the cinder notch that falls of gasification furnace, and incinerator is located at the front lower place that gasification furnace falls cinder notch, the rear of incinerator For the slag notch of incinerator, the grate is provided with garbage pusher device, and the garbage pusher device is located at the lower section of feed hopper, is used for By in the rubbish push-in gasification furnace in feed hopper, the lower section of gasification furnace moving hearth and the lower section of incinerator moving hearth are distinguished Provided with the air compartment that at least one is independently arranged, windrow seal section, the gasification furnace are provided between the feed hopper, gasification furnace Transition is left on grate part between incinerator and falls slag section, the transition falls slag section and is provided with residue pusher, for inciting somebody to action In the rubbish residue push-in incinerator fallen in gasification furnace;The gasification furnace, incinerator include furnace shell, moving hearth, institute respectively State the forward and backward side of gasification furnace and slag section sealing fallen by windrow seal section, transition respectively, the transition fall slag section isolation gasification furnace, Incinerator, makes gasification furnace, incinerator separate;The gasification furnace, incinerator are respectively in arching upward shape, before the gasification furnace Secondary air feed mouthful is set respectively on arch, rear arch, and the vault of the gasification furnace sets the first exhanst gas outlet, the vault of the incinerator Set and be respectively equipped with igniting combustion supporting hole on the second exhanst gas outlet, the gasification furnace, incinerator;
The steam generator system, which includes boiler body a, boiler body b, the boiler body a, has cyclone combustion chamber, furnace chamber a, stove Room b, the lower end of the cyclone combustion chamber sets smoke inlet, and the smoke inlet of cyclone combustion chamber is connected with the first exhanst gas outlet, Cyclone combustion chamber upper end is the 3rd exhanst gas outlet, and the cyclone combustion chamber is described some to help provided with some combustion air air feeds mouthful Fire wind air feed mouthful to be located between smoke inlet, the 3rd exhanst gas outlet, the 3rd exhanst gas outlet of cyclone combustion chamber upper end is with furnace chamber a's Upper end is connected, the furnace chamber a, furnace chamber b lower end connection, and the upper end of the furnace chamber b sets waste gas outlet, the cyclone combustion chamber It is interior circumferentially arranged with being provided with superheater a I, superheater a II, the superheater a I in water-cooling wall a, the furnace chamber a in a ring Positioned at superheater a II top, evaporator a is provided with furnace chamber b, boiler body a top sets drum a, the whirlwind combustion Burning room, furnace chamber a, furnace chamber b are respectively positioned on below drum a, and the drum a is provided with carbonated drink import, and drum a passes through water separator Steam water interface is separated, drum a delivery port connects water-cooling wall a, evaporator a water inlet by pipeline respectively, for exporting The water that water separator is isolated, the water-cooling wall a, evaporator a venthole enter vapour by steam pipe connection drum a respectively Mouthful, for the high-temperature steam that flows back, the saturated vapor outlet of the drum a connects superheater a I, superheater a II by pipeline respectively Air intake, for the high-temperature steam of backflow to be inputted in superheater a I, superheater a II, the venthole of the superheater a I is defeated Go out high pressure superheated steam, vapours is pressed through in the venthole output of the superheater a II;
The boiler body b has cyclone dust removal room, furnace chamber d, and the lower end of the cyclone dust collectors is connected with the second exhanst gas outlet, The upper end of cyclone dust removal room is connected with furnace chamber d upper end, circumferentially arranged with water-cooling wall b in a ring in the cyclone dust removal room, Superheater b I, superheater b II, evaporator b are disposed with the furnace chamber d from top to bottom, boiler body b top sets vapour B is wrapped, the cyclone dust removal room, furnace chamber d are respectively positioned on below drum b, and the drum b is provided with carbonated drink import, and drum b passes through carbonated drink Separator separates steam water interface, and drum b delivery port by passing through pipeline connection water-cooling wall b, evaporator b water inlet respectively Mouthful, for exporting the water that water separator is isolated, the water-cooling wall b, evaporator b venthole are connected by steam pipe respectively Drum b air intake, for the high-temperature steam that flows back, the saturated vapor outlet of the drum b connects superheater b by pipeline respectively Ith, superheater b II air intake, for the high-temperature steam of backflow to be inputted in superheater b I, superheater b II, the superheater b I Venthole output high pressure superheated steam, the superheater b II venthole output in press through vapours;
The circulation air feed system includes the first blower fan, the second blower fan, and the inlet end of first blower fan passes through pipeline and furnace chamber d Lower end connection, the flue gas for extracting furnace chamber d discharges, the outlet side of first blower fan connected by pipeline with furnace chamber b, institute State the air inlet and atmosphere of the second blower fan, the gas outlet of second blower fan connects the first manifold, the second manifold respectively House steward, the branch pipe of first manifold respectively with each two on each air compartment and gasification furnace below gasification furnace moving hearth Secondary air feed mouthful connection, the branch pipe of second manifold fires with each air compartment below incinerator moving hearth and whirlwind respectively Burn some combustion air air feeds mouthful connection of room;
The electricity generation system includes steam turbine and the generator being connected with turbine power, and the steam turbine includes high pressure Cylinder, intermediate cylinder, low-pressure cylinder,
First order steam trap, first order high pressure vapour vapour heater be set between the high-pressure cylinder, intermediate cylinder, described the The input of one-level steam trap and the output end of high-pressure cylinder are connected by pipeline, and the steam of first order steam trap is defeated Go out end to be connected by pipeline with the heated input of first order high pressure vapour vapour heater, the first order high pressure vapour vapour heater Connected by the steam input of hot output terminal and intermediate cylinder by pipeline, the second level is set between intermediate cylinder, low-pressure cylinder Steam trap, second level high pressure vapour vapour heater, input and the intermediate cylinder output end of the second level steam trap Connected by pipeline, the steam output end of second level steam trap leads to the heated input of second level high pressure vapour vapour heater Piping is connected, and the steam input by hot output terminal and low-pressure cylinder of the second level high pressure vapour vapour heater passes through pipeline Connection;
The steam output end of low-pressure cylinder is sequentially connected condenser, water pump, low pressure vapor heater, oxygen-eliminating device, increasing by pipeline Water pump, high pressure steam water heater, the heated input of the low pressure vapor heater are connected with water pump, low pressure vapor heater Be connected by hot output terminal with oxygen-eliminating device, the input of oxygen-eliminating device is provided with moisturizing pipeline, the high pressure steam water heater it is heated Input is connected with booster water pump, the carbonated drink for being connected drum a, drum b by pipeline by hot output terminal of high pressure steam water heater Import, the water output end of the first order steam trap, the water output end of second level steam trap are connected by pipeline respectively Connect the input of oxygen-eliminating device;
Also include high steam input pipe, middle pressure steam input pipe, the input connection superheater a of medium pressure steam input pipe IIth, superheater b II venthole, the output end of middle pressure steam input pipe connects the input of intermediate cylinder, the high steam Input connection superheater a I, superheater b I venthole of input pipe, the output end of the high steam input pipe are led to respectively Input, the heating input of first order high pressure vapour vapour heater, the second level high pressure vapour vapour of piping connection high-pressure cylinder add The heating input of hot device, the heating input of the heating output end connection high pressure steam water heater of first order high pressure vapour vapour heater End, the heating output end of high pressure steam water heater connects the input of oxygen-eliminating device, and the heating of second level high pressure vapour vapour heater is defeated Go out the heating input of end connection low pressure vapor heater, the heating output end of low pressure vapor heater connects the input of oxygen-eliminating device End;
The high-pressure cylinder takes pipe provided with the first steam, and the first steam takes pipe to take steam, first to the output end of high-pressure cylinder Steam takes the output end of pipe to connect the heating input of high pressure steam water heater, and medium pressure cylinder takes provided with the second steam Pipe, second steam takes pipe to take steam to the output end of intermediate cylinder, and the second steam takes the output end of pipe to connect low pressure vapor The heating input of heater;Also include high pressure vapour gas heat exchanger, low-pressure steam gas heat exchanger, the high pressure vapour gas heat exchanger plus The passage of heat is connected to the first steam by pipeline and taken between pipe, oxygen-eliminating device input, and the heating of the low-pressure steam gas heat exchanger is led to Road is connected to the second steam by pipeline and taken between pipe, oxygen-eliminating device input, the heated passage of low-pressure steam gas heat exchanger, high pressure vapour The heated passage of gas heat exchanger is series on the house steward of the first manifold, and the high pressure vapour gas heat exchanger is located at low-pressure steam gas heat exchanger Downstream.
2. the double boiler energy-saving power generation system according to claim 1 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:Set respectively on each branch pipe of first manifold on the first regulating valve, each branch pipe of second manifold respectively Second regulating valve is set.
3. the double boiler energy-saving power generation system according to claim 1 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:The upper end that the boiler body a has furnace chamber c, the furnace chamber c is connected with the waste gas outlet of furnace chamber b upper ends, furnace chamber C lower end sets Waste gas outlet.
4. the double boiler energy-saving power generation system according to claim 3 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:Air preheater is provided with the furnace chamber c, the outlet side of second blower fan connects the air inlet of air preheater Mouthful, the gas outlet of air preheater connects the first manifold, the house steward of the second manifold.
5. the double boiler energy-saving power generation system according to claim 3 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:Economizer is provided with the furnace chamber c, the water inlet of the economizer is connected with the delivery port of booster water pump, described The delivery port of economizer passes through pipeline and drum a, drum b carbonated drink inlet communication respectively.
6. the double boiler energy-saving power generation system according to claim 3 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:The Waste gas outlet connection flue gas purification system of the furnace chamber c, the flue gas purification system is included along discharge directions Aeration tower, deduster, air-introduced machine, the chimney being sequentially connected in series.
7. the double boiler energy-saving power generation system according to claim 1 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:The burner hearth company of common slag notch, the common slag notch and gasification furnace is provided with below the furnace chamber a, furnace chamber b It is logical.
8. the double boiler energy-saving power generation system according to claim 1 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:The lower end of the cyclone combustion chamber provided with radius diminishes from top to bottom taper slag notch, the taper slag notch with The burner hearth connection of gasification furnace.
9. the double boiler energy-saving power generation system according to claim 1 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:The smoke inlet, the 3rd exhanst gas outlet are located at the opposite side of cyclone combustion chamber circumferential wall;3rd flue gas goes out Opening's edge cyclone combustion chamber circumferential wall is radially or tangentially set.
10. the double boiler energy-saving power generation system according to claim 1 based on stoker fired grate formula refuse gasification incinerator, its It is characterised by:The transition falls is provided with isolating door to be opened/closed in slag section, the isolating door be used for by gasification furnace, incinerator every It is disconnected.
CN201511028025.3A 2015-12-31 2015-12-31 Stoker fired grate formula refuse gasification incinerator and its double boiler energy-saving power generation system Active CN105588131B (en)

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