CN105402737B - Stoker fired grate formula rubbish list stove gasification burning boiler system - Google Patents

Stoker fired grate formula rubbish list stove gasification burning boiler system Download PDF

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Publication number
CN105402737B
CN105402737B CN201511017408.0A CN201511017408A CN105402737B CN 105402737 B CN105402737 B CN 105402737B CN 201511017408 A CN201511017408 A CN 201511017408A CN 105402737 B CN105402737 B CN 105402737B
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China
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air
water
furnace
combustion chamber
drum
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CN105402737A (en
Inventor
肖大志
严欣平
周雄
林顺洪
李长江
丁又青
徐�明
杨鲁
阳小燕
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44Details; Accessories

Abstract

The invention discloses a kind of transition heat efficiency losses are smaller, the higher stoker fired grate formula rubbish list stove gasification burning boiler system of the organic efficiency of heat, including incinerator, steam generator system, air feed system, incinerator includes feed hopper, body of heater, feed hopper, windrow seal section is provided between body of heater, arch upward and the first exhanst gas outlet is set in the upper end of body of heater, steam generator system includes boiler body, boiler body has interconnected cyclone combustion chamber, furnace chamber a, furnace chamber b, cyclone firing sets water-cooling wall in room, superheater is set in furnace chamber a, evaporator is set in furnace chamber b, the gas approach of cyclone combustion chamber connects the first exhanst gas outlet, the top of boiler body sets drum, drum is provided with carbonated drink import, drum connects water-cooling wall, the water inlet of evaporator is used to export water, water-cooling wall, the venthole connection drum air intake flowback steam of evaporator, the saturated vapor outlet of drum exports superheated steam by superheater.

Description

Stoker fired grate formula rubbish list stove gasification burning boiler system
Technical field
Burnt the invention belongs to solid waste incineration processing technology field, more particularly to stoker fired grate formula rubbish list furnace gas Enamelware pot furnace 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 summary, typical incinerator, respectively there is its own advantage, but needs what is solved in China's practical application Problem and shortage:
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.
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 produce steam shift steam turbine power generation onto, whole transition heat efficiency losses are larger, place Identical quantity of refuse is managed, relative reduction thermal losses and raising heat exchanger effectiveness can just 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 rubbish list stove gasification burning Steam generator system, rubbish is handled using stoker fired grate formula rubbish list stove gasification burning boiler system, and rubbish conveying capacity is stronger, rubbish Treating capacity is bigger, can reduce thermal losses and improve heat exchanger effectiveness, the organic efficiency of heat is higher, and can efficiently reduce Pollutant discharge amount.
The object of the present invention is achieved like this:
The incinerator includes grate, and set gradually on grate along feedstock direction feed hopper, body of heater, fall Cinder notch, the body of heater includes furnace shell, moving hearth, and the moving hearth uses stoker fired grate, and the furnace shell, moving hearth are surrounded The burner hearth of incinerator, the moving hearth is set to dryer section, gasification section, burning segment, moving hearth along feedstock direction successively Lower section be provided with least two air compartments being independently arranged, an air compartment of the lower section of moving hearth is divided into two groups, wherein one Dryer section, the gasification section of air compartment correspondence moving hearth of group, the burning segment of another group of air compartment correspondence moving hearth are described Windrow seal section is provided between feed hopper, body of heater, the grate is provided with pusher, and the pusher is located under feed hopper Side, for the rubbish in feed hopper to be pushed into burner hearth, the furnace shell sets the first flue gas to go out in the shape that arches upward, the vault of furnace shell Mouthful, secondary air feed mouthful is set respectively on the face arch of furnace shell, rear arch, and the secondary air feed mouthful is located at moving hearth dryer section, gasification The surface of section;
The steam generator system includes boiler body, and the boiler body has cyclone combustion chamber, furnace chamber a, furnace chamber b, described Cyclone combustion chamber is used for second-time burning, and the upper end of cyclone combustion chamber is provided with combustion chamber ignition combustion-supporting hole, the lower end of cyclone combustion chamber Slag notch is set, and the bottom of the cyclone combustion chamber circumferential wall sets smoke inlet, and the smoke inlet connects furnace shell by pipeline First exhanst gas outlet of vault, the top of the cyclone combustion chamber circumferential wall sets the second exhanst gas outlet, the cyclone combustion chamber Circumferential wall on be uniformly provided with some combustion air air feeds mouthful, each combustion air air feed mouthful is respectively positioned on smoke inlet, the second exhanst gas outlet Between, the second exhanst gas outlet of cyclone combustion chamber is connected with furnace chamber a upper end, the furnace chamber a, furnace chamber b lower end connection, described Circumferentially arranged with water-cooling wall in a ring in furnace chamber b upper end setting waste gas outlet, the cyclone firing room, in the furnace chamber a Be provided with superheater, furnace chamber b and be provided with evaporator, the top of boiler body sets drum, the cyclone combustion chamber, furnace chamber a, Furnace chamber b is respectively positioned on below drum, and the drum, which is provided with carbonated drink import, drum, is provided with water separator, for separating vapour Aqueous mixtures, drum connects the water inlet of water-cooling wall by the first down-comer, for exporting the water that water separator is isolated, Drum connects the water inlet of evaporator by the second down-comer, for exporting the water that water separator is isolated, the water cooling Wall, the venthole of evaporator connect the air intake of drum by steam pipe respectively, for the high-temperature steam that flows back, the saturation of the drum Steam (vapor) outlet connects the air intake of superheater by pipeline, for the high-temperature steam of backflow to be inputted in superheater, the overheat The venthole output superheated steam of device;
The air feed system includes air blower, the first manifold, the second manifold, and air inlet and the air of the air blower connect Logical, the gas outlet of the air blower connects the first manifold, the house steward of the second manifold respectively, the branch pipe of first manifold respectively with Secondary air feed mouthful connection on each air compartment and furnace shell face arch, rear arch below moving hearth dryer section, gasification section, first First regulating valve is set respectively on each branch pipe of manifold, the branch pipe of second manifold respectively with below moving hearth burning segment The second tune is set respectively on each combustion air air feed mouthful connection of each an air compartment and cyclone combustion chamber, each branch pipe of the second manifold Save valve.
Further, in addition to steam output device, to water input system, the venthole of the superheater by pipeline to Steam output device exports superheated steam, the condenser for including being sequentially connected in series by pipeline to water input system, water pump, removes Oxygen device, booster water pump, water source is connected between the water pump, oxygen-eliminating device by moisturizing pipeline, and the water inlet of the condenser passes through Pipeline connects the discharge outlet of steam output device, and the delivery port of the booster water pump connects the carbonated drink import of drum by pipeline.
Steam output device can not be all converted to water by condenser using complete steam, and absorb the heat of steam release Amount, the main function of oxygen-eliminating device is exactly that the oxygen and other gases in boiler feedwater are removed with it, it is ensured that the quality of feedwater, is increased Water pump can improve hydraulic pressure, it is ensured that, can be to steam output device to water input system to the water supply capacity of water input system The water of discharge carries out further heat recovery, improves heat recovery efficiency.
In order to utilize superheated steam generation, it is preferable that the steam output device is steam turbine.
In order to which the flue gas discharged to furnace chamber b carries out further heat recovery, heat recovery efficiency is improved, further Ground, the upper end that the boiler body 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 Waste gas outlet is set.
In order to which the flue gas discharged to furnace chamber b carries out further heat recovery, heat recovery efficiency is improved, it is further excellent Economizer is provided with selection of land, the furnace chamber c, the water inlet of the economizer is connected with the delivery port of booster water pump, the section heat The delivery port of device passes through pipeline and the carbonated drink inlet communication of drum.
In order to which the flue gas discharged to furnace chamber b carries out further heat recovery, heat recovery efficiency is improved, it is further excellent Air preheater is provided with selection of land, the furnace chamber c, the outlet side of second blower fan connects the air inlet of air preheater, empty The gas outlet of air preheater connects the first manifold, the house steward of the second manifold.
In order to make full use of the remaining waste heat of steam output device, it is preferable that also including a heat exchanger, the heat exchanger Heating passage is connected between the discharge outlet of steam output device, oxygen-eliminating device input by pipeline, the heat exchanger it is heated Passage is connected on the house steward of the first manifold.
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.
For the waste residue for discharging furnace chamber a, furnace chamber b, flue gas deposition is produced in cyclone firing room, and prevent waste residue effusion generation Pollution, it is preferable that common slag notch is provided with below the furnace chamber a, furnace chamber b, the slag notch of the cyclone combustion chamber lower end is in The taper that radius diminishes from top to bottom, the common slag notch, cyclone combustion chamber slag notch are connected with the burner hearth of gasification furnace respectively.
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 second exhanst gas outlet are located at the opposite side of cyclone combustion chamber circumferential wall;Second exhanst gas outlet is justified along cyclone combustion chamber Perisporium is radially or tangentially set.
In order to adapt to the installing space in factory, it is preferable that the face arch of the furnace shell is flat construction, or, the stove The face arch of shell is that rear end is inclined upwardly structure.
By adopting the above-described technical solution, the present invention has the advantages that:
The synthesizer that the present invention is produced using cyclone combustion chamber to incinerator carries out second-time burning, in combustion-supporting confession wind action Under, burn more abundant, the organic efficiency of heat is higher, and can reduce the discharge capacity of pollutant.To moving hearth dryer section, Gasification section carries out air feed respectively, can individually improve the wind-warm syndrome of moving hearth dryer section air feed, makes the dry of moving hearth dryer section Dry effect more preferably, is conducive to follow-up gasification, second-time burning step.Present inventive concept is novel, and garbage treatment quantity is big, adapts to China 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 by annular water-cooling wall be arranged on cyclone combustion chamber on, synthesis gas in cyclone firing Indoor Combustion more To be abundant, the temperature produced of burning is higher, relatively reduces thermal losses and improves heat exchanger effectiveness.What this steam generator system was reclaimed Origin of heat enters cyclone combustion chamber in the high-temperature synthesis gas flue gas of refuse gasification outlet of still, synthesis gas flue gas, while to whirlwind Tangential air-supplied combustion-supporting flammable synthesis gas in combustion chamber, flue gas sequentially passes through cyclone combustion chamber, furnace chamber a, furnace chamber b, section heat Device and air preheater.Recycle the pre- hot condensed water of economizer, pre- hot condensed water enters boiler part, condensed water in water-cooling wall and Heated in evaporator, formation saturated vapor enters saturated vapor after drum, steam-water separation and enters superheater, is thermally formed again Vapours is exported, available for generating electricity, heat supply, heating etc..The present invention utilizes cyclone-burning method, reduces flying dust in flue gas and contains Amount;Syngas combustion temperature is high, and gas residence time is long, and pollutant is effectively decomposed, and reduces pollutant emission, realizes rubbish Synthesis gas burning disposal and heat recovery and utilization after rubbish continuous gasification.
Brief description of the drawings
Fig. 1 is structural representation of the invention;
Fig. 2 is the structural representation of incinerator;
The structural representation of cyclone combustion chamber in Fig. 3;
Fig. 4 is Fig. 3 schematic top plan view;
Fig. 5 is steam output device, the structural representation to water input system;
Fig. 6 is the structural representation of flue gas purification system.
Reference
1 is incinerator, and 101 be grate, and 102 be feed hopper, and 103 be furnace shell, and 104 be burner hearth, and 105 be siege, 106 It is an air compartment for pusher, 107,108 be windrow seal section, and 112 be the first exhanst gas outlet, and 114 be igniting combustion supporting hole, 115 For secondary air feed mouthful, 116 be to fall cinder notch;
2 be air feed system, and 203 be air blower, and 204 be the first manifold, and 205 be the second manifold, and 207 be the first regulating valve, 208 be the second regulating valve;
3 be cyclone combustion chamber, and 301 be combustion chamber ignition combustion-supporting hole, and 302 be slag notch, and 303 be smoke inlet, and 304 be the Two exhanst gas outlets, 305 be combustion air air feed mouthful.
4 be boiler body, and 402 be furnace chamber a, and 403 be furnace chamber b, and 404 be furnace chamber c, and 405 be water-cooling wall, and 406 be superheater, 407 be evaporator, and 408 be drum, and 409 be the first down-comer, and 410 be the second down-comer, and 411 be steam output device, and 412 are To water input system, 413 be condenser, and 414 be water pump, and 415 be oxygen-eliminating device, and 416 be booster water pump, and 417 be moisturizing pipeline, 418 be economizer, and 419 be flue gas purification system, and 420 be aeration tower, and 421 be deduster, and 422 be air-introduced machine, and 423 be chimney, 424 be air preheater, and 425 be heat exchanger.
Embodiment
It is a kind of preferred embodiment of stoker fired grate formula rubbish list stove gasification burning boiler system referring to Fig. 1, including gas Change incinerator 1, cyclone combustion chamber 3, air feed system 2,
Referring to Fig. 2, the incinerator 1 includes grate 101, and is set gradually on grate 101 along feedstock direction Feed hopper 102, body of heater, fall cinder notch 116, the body of heater includes furnace shell 103, moving hearth 105, and the moving hearth 105 is adopted With the stoker fired grate formula moving hearth 105 of the independent driving of segmentation, the fire grate of stoker fired grate formula moving hearth 105 is by moving grate Plate forward laps with fixed grate plate, it is spaced collect form, adjacent multigroup moving grate plate is connected by pull bar, use A set of drive device driving.Stoker fired grate formula moving hearth 105 is as the carrier of conveying garbage, and embodiments thereof can be all kinds of Type moving hearth 105, such as chain-plate type, drum-type, multisection type fire grate system.The furnace shell 103, moving hearth 105 surround gas Change the burner hearth 104 of incinerator 1, the moving hearth 105 is set to dryer section, gasification section, burning segment along feedstock direction successively, it is mobile The lower section of siege 105 is provided with least two air compartments 107 being independently arranged, an air compartment 107 of the lower section of moving hearth 105 It is divided into two groups, dryer section, the gasification section of correspondence moving hearth 105 of air compartment 107 of one of which, another group of air compartment correspondence The burning segment of moving hearth 105, is provided with windrow seal section 108 between the feed hopper 102, body of heater, the grate 101 is provided with Pusher 106, the pusher 106 is located at the lower section of feed hopper 102, for the rubbish in feed hopper 102 to be pushed into burner hearth 104 It is interior, windrow seal section 108 is provided between the feed hopper 102, body of heater, the work of pusher 106 is entered in place in windrow seal section 108 Interior, garbage raw material is put into from feed hopper 102 and fallen, and pusher 106 is retreated, then is promoted, and pusher is in windrow seal section back and forth 108 form windrow, body of heater entrance is in windrow sealing state, strengthen furnace sealing effect, solve pusher 106 and feed hopper 102 easy leakage problems.When needing the complete prepurging to dispose all rubbish, the forward impelling half stroke again of pusher 106, by rubbish Rubbish is pushed completely into body of heater, body of heater entrance is lost windrow sealing effectiveness.The furnace shell 103 is in the shape that arches upward, the furnace shell 103 Face arch is flat construction, or, the face arch of the furnace shell 103 is inclined upwardly structure for rear end.The vault of furnace shell 103 sets first Secondary air feed mouthful 115 is set respectively on exhanst gas outlet 112, the face arch of furnace shell 103, rear arch, and each secondary air feed mouthful 115 is respectively positioned on shifting The dynamic dryer section of siege 105, the surface of gasification section.
The boiler body 4 has cyclone combustion chamber 3, furnace chamber a402, furnace chamber b403, furnace chamber c404, referring to Fig. 3, Fig. 4 institute The lower end for stating cyclone combustion chamber 3 sets smoke inlet 303, and the smoke inlet 303 of the cyclone combustion chamber 3 passes through pipeline and gasification First exhanst gas outlet 112 of stove 103 is connected, the upper end of cyclone combustion chamber 3 be the second exhanst gas outlet 304, the smoke inlet 303, Second exhanst gas outlet 304 is located at the opposite side of the circumferential wall of cyclone combustion chamber 3, and the top of cyclone combustion chamber 3 sets combustion chamber ignition Combustion-supporting hole 301.In order that flue gas, combustion air be sufficiently mixed, burn in cyclone combustion chamber 3 after from the row of the second exhanst gas outlet 304 Go out, the cyclone combustion chamber 3 is provided with some combustion air air feeds mouthful 305, and some combustion air air feeds mouthful 305 enter positioned at flue gas Between the 303, second exhanst gas outlet 304 of mouth.The smoke inlet 303, the second exhanst gas outlet 304, the edge rotation of combustion air air feed mouthful 305 The circumferential wall of wind combustion chamber 3 is radially or tangentially set.Second exhanst gas outlet 304 of the upper end of cyclone combustion chamber 3 is upper with furnace chamber a402's End connection, the furnace chamber a402, furnace chamber b403 lower end connection, the upper end of the furnace chamber b403 sets waste gas outlet, the rotation The lower end of wind combustion chamber 3 is provided with the taper slag notch 302 that radius diminishes from top to bottom, the taper slag notch 302 and gasification furnace 103 Burner hearth connection.Common slag notch, the common slag notch and gasification furnace are provided with below the furnace chamber a402, furnace chamber b403 103 burner hearth connection.In the present embodiment, the tail of the common slag notch and taper slag notch 302 with the burner hearth of gasification furnace 103 Portion's changeover portion connection.
It is provided with the interior water-cooling wall 405 being circumferentially with along inwall in a ring of the cyclone combustion chamber 3, the furnace chamber a402 Evaporator 407 is provided with superheater 406, furnace chamber b403, the top of boiler body 4 sets drum 408, the cyclone combustion chamber 3rd, furnace chamber a402, furnace chamber b403 are respectively positioned on the lower section of drum 408, and the drum 408 is provided with carbonated drink import, are mixed for inputting carbonated drink Water separator is provided with compound, drum 408, for separating steam water interface, drum 408 is connected by the first down-comer 409 The water inlet of water receiving cold wall 405, for exporting the water that water separator is isolated, drum 408 is connected by the second down-comer 410 The water inlet of evaporator 407 is connect, for exporting the water that water separator is isolated, the water-cooling wall 405, evaporator 407 Venthole connects the air intake of drum 408 by steam pipe respectively, for the high-temperature steam that flows back, the saturated vapor of the drum 408 The air intake that superheater 406 is connected by pipeline is exported, for the high-temperature steam of backflow to be inputted in superheater 406, the mistake The venthole output superheated steam of hot device 406.
Referring to Fig. 1, the air feed system 2 includes air blower 203, the first manifold 204, the second manifold 205, the air blower 203 air inlet and atmosphere, the gas outlet of the air blower 203 connects the first manifold 204, the second manifold 205 respectively House steward, the house steward of first manifold 204 is provided with air preheater 209.The air preheater 209 uses electric heater, Certainly, air preheater 209 can also directly use the air preheater 209 in boiler.The branch of first manifold 204 Pipe respectively with two on each air compartment 107 and the face arch of furnace shell 103, rear arch below the dryer section of moving hearth 105, gasification section Secondary air feed mouthful 115 is connected, and the first regulating valve 207 is set respectively on each branch pipe of the first manifold 204, second manifold 205 Each combustion air air feed mouthful of branch pipe respectively with each air compartment 107 below the burning segment of moving hearth 105 and cyclone combustion chamber 3 Second regulating valve 208 is set respectively on 305 connections, each branch pipe of the second manifold 205.
Referring to Fig. 5, in the present embodiment, steam generator system also includes steam output device 411, to water input system 412, this reality Apply in example, the steam output device 411 is steam turbine.The venthole of the superheater is by pipeline to steam output device 411 output superheated steams, the condenser 413 for including being sequentially connected in series by pipeline to water input system 412, water pump 414, are removed Oxygen device 415, booster water pump 416, water source, the condensation are connected between the water pump 414, oxygen-eliminating device 415 by moisturizing pipeline 417 The water inlet of device 413 connects the discharge outlet of steam output device 411 by pipeline, and the delivery port of the booster water pump 416 passes through Pipeline connects the carbonated drink import of drum 408.The upper end of the furnace chamber c404 is connected with the waste gas outlet of furnace chamber b403 upper ends, furnace chamber C404 lower end sets and economizer 418 is provided with Waste gas outlet, the furnace chamber c404, the water inlet of the economizer 418 with The delivery port connection of booster water pump 416, the delivery port of the economizer 418 and the carbonated drink inlet communication of drum 408.Referring to Fig. 6, 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.Air preheater 424 is provided with the furnace chamber c404, In the present embodiment, air preheater 424 is located at the downstream of economizer 418, the outlet side connection air of second blower fan 203 The air inlet of preheater 424, the gas outlet of air preheater 424 connects the first manifold, the house steward of the second manifold 206.Also include One heat exchanger 425, the heating passage of the heat exchanger is connected to the discharge outlet of steam output device, oxygen-eliminating device by pipeline and inputted Between end, the heated passage of the heat exchanger is connected on the house steward of the first manifold.
A kind of waste disposal method of stoker fired grate formula rubbish list stove gasification burning boiler system, this method is according to the following steps Carry out:
Step A, the gate for closing incinerator 1 and atmospheric vent, start incinerator 1, garbage raw material are put into The garbage raw material fallen from feed hopper 102 is pushed into feed hopper 102, gasification by feed hopper 102, the pusher back and forth of pusher 106 Windrow seal section 108 between incinerator 1, makes the formation windrow sealing state of windrow seal section 108, and unnecessary rubbish falls into gasification The moving hearth 105 of incinerator 1, the moving hearth 105 of incinerator 1 works, until rubbish is in the movement of incinerator 1 Siege 105 is accumulated to required thickness:0.6-0.8m, stops feeding intake to feed hopper 102, the moving hearth 105 of incinerator 1 It is stopped, then, burner hearth 104 is stretched into by the igniting combustion supporting hole 114 of gas incinerator with start-up burner, in start-up burner In the presence of, furnace lifting, baker are carried out to incinerator 1, during baker, the rubbish accumulated can protect moving hearth 105, prevented Only scaling loss siege 105.Treat that this process stabilization is completed, the burner hearth 104 of incinerator 1 is reached 600-700 DEG C of predetermined temperature;Dry The purpose of stove 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 big Amount 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.
Technological parameter (the pusher of step B, startup, regulation air feed system 2, regulation incinerator 1 and air feed system 2 The speed of device 106, fire grate speed, wind-warm syndrome, blast and air quantity, secondary air temperature, blast and air quantity, furnace temperature, negative pressure, the bed of material in stove Thickness etc.), fed intake to feed hopper 102, the work conveying garbage of moving hearth 105 in stove, rubbish is proceeded by burner hearth 104 Burning, makes burning state temperature in burner hearth 104 be stabilized to more than 850 DEG C.
Step C, each technological parameter for adjusting incinerator 1, cyclone combustion chamber 3 and air feed system 2, make siege 105 On rubbish heat treatment mode → burn → process transitions burnt to drying → pyrolytic gasification → process burnt, bottom from drying Slag is conveyed into cinder notch, and the stable synthesis gas for producing 10%-20% of the first exhanst gas outlet 112 makes the flue gas of cyclone combustion chamber 3 second 304 temperature stabilizations are exported to more than 850 DEG C, rubbish continuous gasification burning disposal is realized.
It step D, need to overhaul or during blowing out, stop feeding intake, regulation incinerator 1, cyclone combustion chamber 3 and air feed system 2 technological parameter, makes incinerator 1 be gradually restored to fired state, after rubbish and rubbish residue are burnt, and closes mechanical kiln Row's formula rubbish list stove incinerator 1 and air feed system 2.
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 stoker fired grate formula rubbish list stove gasification burning boiler system, it is characterised in that:Including incinerator, boiler system System, air feed system,
The incinerator includes grate, and set gradually on grate along feedstock direction feed hopper, body of heater, fall slag Mouthful, the body of heater includes furnace shell, moving hearth, and the moving hearth uses stoker fired grate, and the furnace shell, moving hearth surround gas Change the burner hearth of incinerator, the moving hearth is set to dryer section, gasification section, burning segment along feedstock direction successively, moving hearth Lower section is provided with least two air compartments being independently arranged, and an air compartment of the lower section of moving hearth is divided into two groups, one of which Dryer section, the gasification section of air compartment correspondence moving hearth, the burning segment of another group of air compartment correspondence moving hearth are described to give Windrow seal section is provided between feed bin, body of heater, the grate is provided with pusher, and the pusher is located at the lower section of feed hopper, For the rubbish in feed hopper to be pushed into burner hearth, the furnace shell sets the first exhanst gas outlet, stove in the shape that arches upward, the vault of furnace shell Secondary air feed mouthful is set respectively on the face arch of shell, rear arch, and the secondary air feed mouthful is being located at moving hearth dryer section, gasification section just Top;
The steam generator system includes boiler body, and the boiler body has cyclone combustion chamber, furnace chamber a, furnace chamber b, the whirlwind Combustion chamber is used for second-time burning, and the upper end of cyclone combustion chamber is provided with combustion chamber ignition combustion-supporting hole, and the lower end of cyclone combustion chamber is set Slag notch, the bottom of the cyclone combustion chamber circumferential wall sets smoke inlet, and the smoke inlet connects furnace shell vault by pipeline The first exhanst gas outlet, the top of the cyclone combustion chamber circumferential wall sets the second exhanst gas outlet, the circle of the cyclone combustion chamber Some combustion air air feeds mouthful are uniformly provided with perisporium, each combustion air air feed mouthful is respectively positioned between smoke inlet, the second exhanst gas outlet, Second exhanst gas outlet of cyclone combustion chamber is connected with furnace chamber a upper end, the furnace chamber a, furnace chamber b lower end connection, the furnace chamber b Upper end waste gas outlet is set, circumferentially arranged with water-cooling wall in a ring in the cyclone firing room, be provided with the furnace chamber a Evaporator is provided with superheater, furnace chamber b, the top of boiler body sets drum, the cyclone combustion chamber, furnace chamber a, furnace chamber b It is respectively positioned on below drum, the drum, which is provided with carbonated drink import, drum, is provided with water separator, is mixed for separating carbonated drink Compound, drum connects the water inlet of water-cooling wall by the first down-comer, for exporting the water that water separator is isolated, drum The water inlet of evaporator is connected by the second down-comer, for exporting the water that water separator is isolated, the water-cooling wall, steaming The venthole for sending out device connects the air intake of drum by steam pipe respectively, for the high-temperature steam that flows back, the saturated vapor of the drum The air intake that superheater is connected by pipeline is exported, for the high-temperature steam of backflow to be inputted in superheater, the superheater Venthole exports superheated steam;
The air feed system includes air blower, the first manifold, the second manifold, the air inlet and atmosphere of the air blower, institute The gas outlet for stating air blower connects the first manifold, the house steward of the second manifold respectively, the branch pipe of first manifold respectively with movement Secondary air feed mouthful connection on each air compartment and furnace shell face arch, rear arch below siege dryer section, gasification section, the first manifold Each branch pipe on the first regulating valve is set respectively, the branch pipe of second manifold respectively with each one below moving hearth burning segment The second regulation is set respectively on each combustion air air feed mouthful connection of secondary air compartment and cyclone combustion chamber, each branch pipe of the second manifold Valve.
2. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 1, it is characterised in that:Also include Steam output device, to water input system, the venthole of the superheater is steamed by pipeline to steam output device output overheat Vapour, condenser, water pump, oxygen-eliminating device, the booster water pump for including being sequentially connected in series by pipeline to water input system, the water Water source is connected by moisturizing pipeline between pump, oxygen-eliminating device, the water inlet of the condenser connects steam output device by pipeline Discharge outlet, the delivery port of the booster water pump passes through the carbonated drink import that pipeline connects drum.
3. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 2, it is characterised in that:The pot The upper end that furnace body 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 sets waste gas Floss hole.
4. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 3, it is characterised in that:It is described Economizer is provided with furnace chamber c, the water inlet of the economizer is connected with the delivery port of booster water pump, the delivery port of the economizer Pass through pipeline and the carbonated drink inlet communication of drum.
5. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 3, it is characterised in that:The stove Air preheater and the second blower fan are provided with the c of room, the outlet side of second blower fan connects the air inlet of air preheater, air The gas outlet of preheater connects the first manifold, the house steward of the second manifold.
6. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 2, it is characterised in that:Also include One heat exchanger, the heating passage of the heat exchanger is connected to discharge outlet, the oxygen-eliminating device input of steam output device by pipeline Between, the heated passage of the heat exchanger is connected on the house steward of the first manifold.
7. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 3, it is characterised in that:The stove Room c Waste gas outlet connection flue gas purification system, the flue gas purification system includes the gas washing being sequentially connected in series along discharge directions Tower, deduster, air-introduced machine, chimney.
8. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 1, it is characterised in that:The stove It is provided with common slag notch below room a, furnace chamber b, what the slag notch of the cyclone combustion chamber lower end diminished in radius from top to bottom Taper, the common slag notch, cyclone combustion chamber slag notch are connected with the burner hearth of gasification furnace respectively.
9. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 1, it is characterised in that:The cigarette Gas entrance, the second exhanst gas outlet are located at the opposite side of cyclone combustion chamber circumferential wall;Second exhanst gas outlet is along cyclone combustion chamber Circumferential wall is radially or tangentially set.
10. stoker fired grate formula rubbish list stove gasification burning boiler system according to claim 1, it is characterised in that:It is described The face arch of furnace shell is flat construction, or, the face arch of the furnace shell is inclined upwardly structure for rear end.
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