CN106524176A - Waste gasification melting combustion system - Google Patents

Abstract

The invention discloses a waste gasification melting combustion system. The system is used for treating garbage, is higher in garbage conveying capacity, is higher in garbage treatment quantity, can reduce the heat loss and improve the heat exchange efficiency, is higher in heat recovery efficiency, and can effectively reduce the pollutant discharge. The waste gasification melting combustion system comprises a waste gasification melting furnace and a boiler system; the waste gasification melting furnace includes a furnace frame, and a feeding bin, a gasification furnace and a melting curing system arranged on the furnace frame in the feeding direction in sequence; the melting curing system includes a melting hearth, a laminar channel, a water cooling crushing system and a water seal deslagging system arranged in sequence in the feeding direction; a high-temperature combustor and a gasifying agent inlet are arranged on the side wall of the melting hearth; the water cooling crushing system includes a water cooling system, a water cooling cavity and a glass body crusher; and a discharge end of the water seal deslagging system is connected with a glass body slag discharge port.

Description

Waste gasification melt-combustion system

Technical field

A kind of the invention belongs to Waste Disposal Technology field, more particularly to waste gasification melt-combustion system.

Background technology

Existing Waste Disposal Technology mainly has burning, sanitary landfills, compost, waste recovery etc..In offal treatment In routine techniquess, burning disposal has reduced training substantially, and innoxious thorough, occupation of land amount is little, and waste heat energy is obtained by, secondary dirt The advantages of dye is few, meets the strategic requirement of China's sustainable development.But with continuous improvement both at home and abroad to environmental requirement, how Strengthen particularly important to the control of secondary pollution.Therefore, pyrolysis of waste gasification burning technology is gradually shifted onto industrial applications Road on, primarily now use all kinds of incineration technologies, gasification burning and gasification especially for domestic various garbages The technological innovation for bringing domestic offal treatment industry is regenerated by the extensive industrialization of fusion technology.

For many years, China to biomass, house refuse, medical waste, the Changjiang river floating thing, domestic sludge, oily sludge and The scientific research of the gasification＆melting technologies such as electronic product, is in progress a lot of, and the basic research of laboratory is a lot, also has applied research, Such as：Rotary kiln type, the destructive gasifying of vertical and fluidized bed type or temperature gasification and high fusion technology etc..But in Technique Popularizing application still There is a definite limitation, raw material type, offal treatment amount, secondary pollution control and economic benefit etc. is principal element.

In existing burning process and equipment, fire grate type incinerator is various informative, and its application accounts for the whole world and burns market More than the 80% of total amount, wherein in body of heater mainly adopts mechanical type backstepping fire grate, forwards fire grate or combined fire grate, also has employing The fire grate such as chain-plate type and drum-type.Domestic developing rapidly through last decade, the popularization and application of fire grate type incinerator have obtained state Family and the attention of various circles of society, burn market at home and have absolute advantagess.

In sum, typical incinerator and melting furnace, respectively have its own advantage, but in China's practical application The middle problem and shortage for needing to solve：

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. being on the increase with garbage yield, pile up like a mountain, and treating capacity must be effectively improved, Cai Nengshi Answer the market demand.

3. require in the face of strict pollutant emission, secondary pollution control is the key problem for technically needing to solve.

4., in order to effectively increase economic efficiency, in heat treatment process, the organic efficiency of heat needs to improve.It is existing useless Generally using release heat is burned, boiler conversion produces steam and shifts steam turbine power generation, whole transition heat onto gurry heat treatment technics Efficiency losses are larger, process identical quantity of refuse, and relative thermal losses and the raising heat exchanger effectiveness of reducing can just improve the thermal efficiency.

The 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)：Castoff heat Tupe is relatively backward, be simply dried-burns-burns, and solid combustion discharges the process of heat；In stove, thermal chemical reaction is with oxygen Change based on reaction, reduction reaction auxiliary is also easy to produce secondary pollution；When garbage burns in the stove, it is big to cross oxygen quotient, once Wind, secondary wind infeed amount are big, and in flue gas, dust content is higher, affect larger to heat reclaiming system and smoke processing system, hold Easy dust stratification, exhaust gas volumn are larger, reduce thermal conversion efficiency；The gasification furnace not being separately provided and incinerator, can only be processed by several times Rubbish, it is impossible to realize large-scale garbage continuous gasification burning disposal, garbage treatment quantity is less.

The for example following two technologies of existing melting furnace：

First, gasification and melting focuses on technology.As a kind of plasma asistance heats fusion and gasification reactor (CN201410744643.7), waste gasification melting furnace (CN201280068994.X), domestic waste oxygen top blown are straight Connect fusion and gasification, and combustion and its generation technology (CN01107088.9) and other pot type gasification and meltings focus on technology, wherein not The problem of solution：Castoff heat tupe is more advanced, but mainly continues the thinking of fixed bed or fluid bed, is done Dry-pyrolysis-gasification-burning (also can without burning)-melting, heat treatment process seriality are bad, and each phase process rhythm is difficult to Match somebody with somebody, and the recycling link of heat considers inadequate, economy is poor, it is impossible to realize large-scale garbage continuous gasification melting Process, treating capacity is less, and it is imperfect to melt Slag treatment.

Second, gasification+melting separating treatment technology.Such as a kind of gasification of rotary kiln, the house refuse classification of plasma melting The method that gasification system (CN201520578876.4), a kind of rotary kiln to melt gasification house refuse produce combustible gas (CN200910218227.2), refuse gasification and flying dust high-temperature fusion processing meanss and method (CN200710144924.9) and its Its pot type separating treatment technology, wherein an open question：Castoff heat tupe is more advanced, but mainly continues fixation The thinking of bed or fluid bed, is dried-is pyrolyzed-gasify-burn (also can be without burning)-melting, main gasification and melting rank Section is carried out in being separated to different equipment, and preferably, but the rhythm between separation phase is still difficult to heat treatment process seriality Match somebody with somebody, and the recycling link of heat considers inadequate, economy is poor, it is impossible to realize large-scale garbage continuous gasification melting Process, treating capacity is less, and it is imperfect to melt Slag treatment.

The content of the invention

It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of waste gasification melt-combustion system, make Rubbish is processed with the system, rubbish conveying capacity is higher, and garbage treatment quantity is bigger, thermal losses can be reduced and heat exchange effect is improved Rate, the organic efficiency of heat are higher, and can efficiently reduce pollutant discharge amount.

The object of the present invention is achieved like this：

A kind of waste gasification melt-combustion system, including waste gasification melting furnace, steam generator system, the garbage gas Changing melting furnace includes grate, and processes along feed hopper, gasification furnace and the melting and solidification that feedstock direction sets gradually on grate System, the melting and solidification processing system are located at the lower section of gasification furnace discharge end, and the melting and solidification processing system includes that edge is entered Melting burner hearth, laminar flow channel, water-cooled crushing system and water seal slag removing system that material direction sets gradually, the melting burner hearth side wall High-temperature burner, gasification agent inlet is provided with, for making from gasification furnace to enter the castoff fusing of melting burner hearth, the laminar flow leads to Road is located at below melting burner hearth discharge end, and laminar flow channel bottom is that laminar flow inclines siege, and the water-cooled crushing system includes water-cooled System, waterway and vitreous body pulverizer, the waterway are located at laminar flow channel front lower place, arrange spray group at the top of waterway Water input spray assemblies for water-cooled, the steam (vapor) outlet output water-cooled are produced by part and steam (vapor) outlet, the water-cooling system Steam, the vitreous body pulverizer is arranged in the middle part of waterway, for the vitreous body slag formed after crushing liquid slag water-cooled, institute Water seal slag removing system is stated located at the lower section of waterway, the discharge end connection vitreous body slag outlet of water seal slag removing system, the water Envelope slag removing system is used for sealing waterway lower end, prevents flue gas from escaping, vitreous body slag is further cooled down, and exports vitreous body Slag.

In order to realize large-scale waste gasification melt process, it may be preferable that the melting burner hearth roof is provided with water conservancy diversion Rear arch and baffle pier, make flue gas horizontally enter into gasification hearth, increase the radiating surface of garbage and the flue gas disturbance of gasification hearth.

In order to control the discharging speed of laminar flow channel, various operating modes are successfully managed, it may be preferable that the laminar flow inclines siege and goes out Material end arranges liquid slag height controller, and the height controller includes baffle plate and the driving for driving baffle plate flexible Part.

In order to ensure the temperature control in laminar flow channel, it is preferable that the laminar flow channel side wall setting calandria carries out auxiliary Help heating and be incubated.

Preferably, the grate is provided with garbage and promotes mainly glassware, and the garbage promotes mainly glassware under feed hopper Side, for the garbage in feed hopper is pushed in gasification furnace, is provided with windrow seal section, institute between the feed hopper, gasification furnace State setting base material material inlet on the roof of windrow seal section, the base material material inlet connection base material feed dress Put, base material Jing base material material inlets are pushed windrow seal section by the base material feeder, for by garbage The element portions such as sulfur, copper, ferrum during gasification and melting are converted into stable compound, and liquid slag is fluxed.

In order to improve capacity usage ratio and reduce water resources consumption, it is preferable that the moving hearth edge of the gasification furnace is entered Material direction is divided into dryer section, gasification section, and the dryer section of the gasification furnace, gasification section are respectively arranged below with least one and are independently arranged An air compartment, wherein, an air compartment below dryer section is air-supplied, and air compartment below gasification section feeds mixing gasifying Agent, the gasification furnace are respectively provided with secondary confession air port in the shape that arches upward on the face arch of the gasification furnace, rear arch, the gasification furnace Vault arranges the first exhanst gas outlet；

The steam generator system includes boiler body, circulation air feed system, and the boiler body has cyclone combustion chamber, furnace chamber A, furnace chamber b, the lower end of the cyclone combustion chamber arrange smoke inlet, and the smoke inlet of cyclone combustion chamber and the first exhanst gas outlet connect It is logical, denitrfying agent jetting device is set on the pipeline that the smoke inlet of cyclone combustion chamber is connected with the first exhanst gas outlet, for cigarette Gas carries out denitration process, and cyclone combustion chamber upper end is the 3rd exhanst gas outlet, and the cyclone combustion chamber is provided with some combustion airs and supplies Air port, some combustion airs are located between smoke inlet, the 3rd exhanst gas outlet for air port, the 3rd cigarette of cyclone combustion chamber upper end Gas outlet is connected with the upper end of furnace chamber a, the furnace chamber a, the lower end connection of furnace chamber b, and the upper end of the furnace chamber b arranges waste gas and goes out Mouthful, circumferentially arranged with water-cooling wall in a ring in the cyclone firing room, superheater is provided with the furnace chamber a, is set in furnace chamber b Vaporizer is equipped with, the top of boiler body arranges drum, and the cyclone combustion chamber, furnace chamber a, furnace chamber b are respectively positioned on below drum, institute State drum and be provided with soda pop import, in drum, be provided with water separator, for separating steam water interface, drum passes through under first Drop pipe connects the water inlet of water-cooling wall, and for exporting the water that water separator is isolated, drum is connected by the second down-comer The water inlet of vaporizer, for exporting the water that water separator is isolated, the water-cooling wall, the venthole of vaporizer lead to respectively The air intake that steam pipe connects drum is crossed, for the high-temperature steam that flows back, the saturated vapor outlet of the drum was connected by pipeline The air intake of hot device, for, in the high-temperature steam input superheater by backflow, the venthole of the superheater exports superheated steam；

The circulation air feed system includes steam air exhauster, for blower fan, gasifying agent blender, the steam air exhauster enters Mouth end is connected with the steam (vapor) outlet at the top of waterway by pipeline, and the steam produced in the waterway is noted by steam air exhauster Enter an air inlet of the gasifying agent blender, the air inlet and atmosphere of the confession blower fan, the outlet of the confession blower fan The air preheater arranged at mouth connection furnace chamber b waste gas outlets, the air preheater connect the house steward of a manifold, the manifold Arm respectively with gasifying agent blender another air inlet, gasification furnace dryer section below an air compartment, gasification furnace it is secondary Connect for air port for the combustion air on air port and the cyclone combustion chamber, the gasifying agent blender is used for mixed vapour convulsion The high temperature air that the steam and steam generator system that machine is extracted out is discharged forms hybrid gasification agent, and the hybrid gasification agent is from gasification agent inlet Melting burner hearth is fed, hybrid gasification agent also serves as gasification furnace First air and feeds an air compartment below gasification furnace gasification section.

In order to improve capacity usage ratio, it is preferable that be provided with air reheater, the gasifying agent mixing in the furnace chamber b Device connects the manifold by pipeline after pipeline connects air reheater again.

In order to improve capacity usage ratio, reduce residue discharge capacity, it is preferable that the melting burner hearth be connected with gasification furnace one Hold the garbage main-inlet for melting burner hearth, the melting burner hearth side wall that garbage sub-inlet is set again, the garbage pair enters Mouth connection garbage pair material-pulling device, garbage pair material-pulling device are molten for the residue of each air compartment below gasification furnace is pushed Melt in burner hearth, inorganic waste entrance is set on the laminar flow channel roof, the inorganic waste entrance connection is inorganic discarded Thing material-pulling device, the inorganic waste material-pulling device are pushed in laminar flow channel for the inorganic residues for collecting steam generator system.

In order to reduce water resources consumption amount, it is preferable that the condensed water that the hybrid gasification agent mixed process is produced is by pipe Road is input into water-cooling system, and the unnecessary cooling water of the water seal slag removing system is recycled using back water pump injection water-cooling system.

As a result of above-mentioned technical proposal, the present invention has the advantages that：

The present invention adopts stoker fired grate, refuse gasification and melt stage to carry out in same equipment, and heat treatment process is continuous Property preferably, the rhythm matching between each stage, the recycling link of heat take into full account, better economy, can realize big The rubbish continuous gasification melt process of scale, garbage treatment quantity are larger, and liquid slag carries out harmless treatment.

Present inventive concept is novel, and garbage treatment quantity is big, and the rubbish bed of material experiences on stoker fired grate and is dried, gasifies and melt rank Section, adapts to the characteristics such as China's house refuse water content height, complicated component, improves the energy conversion efficiency in garbage processing procedure With pollutant discharge amount in reduction flue gas, secondary pollution is effectively prevented, and large-scale rubbish continuous gasification melting can be realized Process, it is ensured that refuse gasification melts effect and lime-ash clinker ignition loss, relative to reduce thermal losses and improve heat exchanger effectiveness, improves The thermal efficiency.

From the pressure change of melting furnace-gasification furnace-cyclone combustion chamber, gasification furnace and cyclone combustion chamber disturbance effect is enhanced Really, the split channel increase high-temperature flue gas radiating surface that baffle pier is formed.

The present invention effectively carries out secondary pollutant control, realizes minimizing, Harmless and Comprehensive Disposal, and concrete grammar is such as Under：

1 suppresses to reduce the secondary pollutions such as SOx, NOx from melting furnace source by base material (can adopt Calx) Produce, and the catalyst member such as Fe, Cu of secondary pollution resynthesis changes into stable compound；

2 spray into denitrfying agent (can adopt liquefied ammonia) from cyclone firing chamber inlet, remove the NOx in flue gas, high temperature denitration；

3 high-temperature fusions decompose, solidify bottom ash and the toxicant in flying dust, realize garbage incinerating power plant without the useless bottom ash of danger Discharge, be that directly landfill or recycling are laid a good foundation.

Description of the drawings

Fig. 1 is the structural representation of the present invention；

Structural representations of the Fig. 2 for melting and solidification processing system；

A-A cross section structure diagrams of the Fig. 3 for Fig. 2；

Fig. 4 is the structural representation for moving towards section view in Fig. 2 at B along flue gas；

C-C cross section structure diagrams of the Fig. 5 for Fig. 2；

D-D cross section structure diagrams of the Fig. 6 for Fig. 2；

Fig. 7 is the structural representation of steam generator system in Fig. 1；

Fig. 8 is cyclone combustion chamber structural representation in Fig. 7；

Schematic top plan views of the Fig. 9 for Fig. 8.

Reference

1 is incinerator, and 101 is grate, and 102 is feed hopper, and 103 is gasification furnace, and 105 is siege, and 106 is garbage Glassware is promoted mainly, 107 is an air compartment, and 108 is windrow seal section, and 112 is the first exhanst gas outlet, and 115 is secondary confession air port；

201 is steam air exhauster, and 202 is to supply blower fan, and 203 is gasifying agent blender, and 204 is manifold, and 205 add again for air Hot device；

3 is cyclone combustion chamber, and 301 is combustion chamber ignition combustion-supporting hole, and 302 is taper slag notch, and 303 is smoke inlet, 304 For the 3rd exhanst gas outlet, 305 supply air port for combustion air；

4 is boiler body, and 402 is furnace chamber a, and 403 is furnace chamber b, and 404 is furnace chamber c, and 405 is water-cooling wall, and 406 is superheater, 407 is vaporizer, and 408 is drum, and 409 is the first down-comer, and 410 is the second down-comer, and 411 is steam output device, and 412 are Feedwater input system, 418 is economizer, and 419 is flue gas purification system, and 420 is aeration tower, and 421 is sack cleaner, and 422 are Air-introduced machine, 423 is chimney, and 424 is air preheater, and 425 is fine purifiation cleaner unit, and 426 is deacidification jetting device, and 427 are work Property charcoal jetting device；

5 is melting and solidification processing system, and 51 are melting burner hearth, and 52 is laminar flow channel, and 53 is water-cooling system, and 54 remove for water seal Slag system, 55 is high-temperature burner, and 56 is gasification agent inlet, and 57 is that laminar flow inclines siege, and 58 is waterway, and 59 is vitreous body powder Broken machine, 510 is spray assemblies, and 511 is steam (vapor) outlet, and 512 is water conservancy diversion rear arch, and 513 is baffle pier, and 514 is height controller, 515 is calandria, and 516 is vitreous body slag outlet, and 517 is base material feeder, and 518 is garbage main-inlet, and 519 are Garbage sub-inlet, 520 be garbage pair material-pulling device, 521 inorganic waste entrances, 522 be inorganic waste material-pulling device, 523 is back water pump, and 524 is rewinding clinohedral, and 525 is maintenance door, and 526 is slag remover, and 527 is denitrfying agent jetting device, and 528 are Gasification furnace side wall, 529 are shunting flue.

Specific embodiment

Referring to Fig. 1 to Fig. 9, it is a kind of preferred embodiment of waste gasification melt-combustion system.The present embodiment includes Waste gasification melting furnace, steam generator system, the waste gasification melting furnace include grate, and along feedstock direction on grate Feed hopper, gasification furnace and the melting and solidification processing system for setting gradually, the discharge end of melting and solidification processing system is vitreous body slag Outlet.

The grate is provided with garbage and promotes mainly glassware, and the garbage is promoted mainly glassware positioned at the lower section of feed hopper, is used for Garbage in feed hopper is pushed in gasification furnace, windrow seal section between the feed hopper, gasification furnace, is provided with, the windrow is close Base material material inlet is set on the roof of envelope section, and the base material material inlet connects base material feeder, the alkali Base material (during gasification and melting, is formed stable compound with the Partial Elements in garbage, is subtracted by base material feeder Of low pollution thing is entered in flue gas；The melt temperature of part residue can be suitably reduced simultaneously) Jing base material material inlets push windrow Seal section.

The moving hearth of the gasification furnace is divided into dryer section, gasification section, the dryer section of the gasification furnace, gas along feedstock direction Change section and be respectively arranged below with least one air compartment being independently arranged, wherein, an air compartment below dryer section is air-supplied, An air compartment below gasification section feeds hybrid gasification agent, and the gasification furnace is in the shape that arches upward, on the face arch of the gasification furnace, rear arch Secondary confession air port is respectively provided with, the vault of the gasification furnace arranges the first exhanst gas outlet.

Fall cinder notch of the discharge end of the gasification furnace for gasification furnace, melting and solidification processing system fall cinder notch positioned at gasification furnace Front lower place, the melting and solidification processing system include melting burner hearth, laminar flow channel, water-cooled crushing system and water seal slag removing system, Water-cooled crushing system and water seal slag removing system are provided with water charging system, be provided with the top of the melting and solidification processing system water conservancy diversion rear arch and Baffle pier, the water conservancy diversion rear arch that the melting roof of the furnace is arranged (can be circular arc, involute arc, realize flue gas for arc Smooth break-in), melt burner hearth in the vertically moving entrance water conservancy diversion rear arch of flue gas on the inside of, cigarette after arc rear arch water conservancy diversion The gas Nogata that flattens (makes flue gas with certain speed and horizontally enters into gasification hearth, increase the radiating surface and gasification furnace of garbage to motion The flue gas disturbance of thorax)；The baffle pier is extended in the middle part of gasification furnace rear arch from water conservancy diversion rear arch flat segments, and arranges multiple points Stream pier, correspondence grate surface quantity formed it is multiple shunting flues (for fire grate be multiple (more than 2) grate surfaces, melting burner hearth compared with It is little, enable flue gas to be radiated each grate surface, increase the radiating surface of garbage and the flue gas disturbance of gasification hearth), the gasification Stove falls multiple rewinding clinohedrals compositions that cinder notch is correspondence grate surface quantity.

The melting burner hearth side wall is provided with high-temperature burner, gasification agent inlet and garbage sub-inlet (garbage major-minor Charging is organic and inorganic, which need to be gasified and be melted)；The high-temperature burner that the melting burner hearth side wall is arranged for etc. Plasma generator or heavy oil burner or pure oxygen combustor (can maintain the burner of 1400-1600 DEG C of high temperature of melting zone equal Can), high-temperature burner entrance diagonally downward, with 30-60 ° of horizontal plane angle (using melting furnace diameter, setting height(from bottom), flame The border condition design such as length, number of burners and size, discarded species, treating capacity), the gasification agent inlet (supplements molten Melt O2, H2O and CO2 needed for chemical reaction etc. in burner hearth) be arranged at below garbage sub-inlet, and in castoff fusing slag it On, the gasification agent inlet diagonally downward, with 10-30 ° of horizontal plane angle (using melting furnace diameter, setting height(from bottom), gasifying agent Entry number and the border condition design such as size, discarded species, treating capacity), the hybrid gasification agent is by adjusting entrance The air themperature of gasifying agent blender, makes hybrid gasification agent temperature stabilization at 400-500 DEG C.

The laminar flow channel bottom is that laminar flow inclines siege, and laminar flow inclines siege end setting liquid slag and highly controls dress Put, side wall arranges calandria (auxiliary heating and insulation), top arranges inorganic waste (only melting to which) entrance；It is described The laminar flow of laminar flow channel bottom inclines siege and is set to along liquid slag flow direction diagonally downward, is 5-15 ° with horizontal plane angle (the border condition design such as discarded species, the mobility of liquid slag, viscosity, treating capacity, time of staying), the liquid slag height Control device inclines siege with laminar flow and is vertically arranged (the scalable control liquid slag height of device)；Along liquid slag flow direction both sides Wall is respectively provided with calandria, and the calandria is that high energy electric heater or plasma generator (aid in heating and are incubated, can maintain 1400-1600 DEG C of high temperature of melting zone)；The inorganic waste entrance incline direction that the top is arranged is along liquid slag flowing side To being the 60-80 ° of (border such as discarded species, the mobility of liquid slag, viscosity, treating capacity, time of staying with horizontal plane angle Condition design, inorganic waste pressure clamp-on melting zone, can effectively decompose the pollutant such as two English, realize containing heavy metal The melt process of bottom ash, flying dust etc.).

Spray assemblies and steam (vapor) outlet are set at the top of the waterway of the water-cooled crushing system, and side wall arranges maintenance door, in Portion arranges vitreous body pulverizer, and bottom arranges water seal slag removing system.The spray assemblies of the water-cooled crushing system are arranged at melting Slag outlet top, vertical direction is just to liquid slag outlet (can just water-cooled to liquid slag body, curing heavy metal), spray assemblies Spray inlet (reinforcing border water-cooled prevents border from cooling down insufficient) is set in the both walls of waterway, with horizontal plane angle is 30-60 ° (using the perimeter strip such as water-cooled chamber size, setting height(from bottom), spray length, quantity and size, discarded species, treating capacity Part is designed), the steam (vapor) outlet is arranged at away from liquid slag outlet outside top (a large amount of high-temperature steams can be excluded).It is described to set The vitreous body pulverizer being placed in the middle part of waterway is located at liquid slag outlet lower section, and the embedded laminar flow uphill furnace bed of vitreous body pulverizer Lower section, embedded size be two crushing wheels installation dimension arranged side by side 1/4-3/4 (realize vitreous body slag into two crushing wheels it Between), two crushing wheel energy rotatings work (preventing from getting stuck).

The steam utilization steam air exhauster injection gasifying agent blender produced in the waterway, the gasifying agent blender Hybrid gasification agent is formed for mixing high temperature air and steam, the hybrid gasification agent feeds melting burner hearth from gasification agent inlet, The condensed water that mixed process is produced returns water-cooling system.The unnecessary cooling water of the water seal slag removing system injects water using back water pump Cooling system is recycled.

The steam generator system includes boiler body, circulation air feed system, and the boiler body has cyclone combustion chamber, furnace chamber A, furnace chamber b, furnace chamber c, the lower end of the cyclone combustion chamber arrange smoke inlet, the smoke inlet of cyclone combustion chamber and the first flue gas Outlet, arranges denitrfying agent jetting device, uses on the pipeline that the smoke inlet of cyclone combustion chamber is connected with the first exhanst gas outlet In carrying out denitration process to flue gas, cyclone combustion chamber upper end is the 3rd exhanst gas outlet, and the cyclone combustion chamber is provided with some helping Combustion wind supplies air port, some combustion airs to be located between smoke inlet, the 3rd exhanst gas outlet for air port, cyclone combustion chamber upper end 3rd exhanst gas outlet is connected with the upper end of furnace chamber a, the furnace chamber a, the lower end connection of furnace chamber b, and the upper end of the furnace chamber b arranges useless Gas is exported, and circumferentially arranged with water-cooling wall in a ring in the cyclone firing room, is provided with superheater, furnace chamber b in the furnace chamber a Vaporizer is provided with inside, the top of boiler body arranges drum, and the cyclone combustion chamber, furnace chamber a, furnace chamber b are respectively positioned under drum Side, the drum are provided with soda pop import, are provided with water separator in drum, and for separating steam water interface, drum passes through First down-comer connects the water inlet of water-cooling wall, and for exporting the water that water separator is isolated, drum declines by second Pipe connects the water inlet of vaporizer, for exporting the water that water separator is isolated, the water-cooling wall, the venthole of vaporizer Connect the air intake of drum respectively by steam pipe, for the high-temperature steam that flows back, the saturated vapor outlet of the drum is by pipeline The air intake of connection superheater, for, in the high-temperature steam input superheater by backflow, the venthole connection of the superheater is steamed Vapour output device exports superheated steam, and steam output device inputs to water input system circulation using the condensed water that complete steam is produced Utilize.

The circulation air feed system includes steam air exhauster, for blower fan, gasifying agent blender, the steam air exhauster enters Mouth end is connected with the steam (vapor) outlet at the top of waterway by pipeline, and the steam produced in the waterway is noted by steam air exhauster Enter an air inlet of the gasifying agent blender, the air inlet and atmosphere of the confession blower fan, the outlet of the confession blower fan The air preheater arranged at mouth connection furnace chamber b waste gas outlets, the air preheater connect the house steward of a manifold, the manifold Arm respectively with gasifying agent blender another air inlet, gasification furnace dryer section below an air compartment, gasification furnace it is secondary Connect for air port for the combustion air on air port and the cyclone combustion chamber, in the present embodiment, in the furnace chamber b, be provided with air again Heater, the gasifying agent blender connect the manifold by pipeline after pipeline connects air reheater again.It is described Gasifying agent blender is used for the high temperature air formation mixing gasifying that the steam and steam generator system of mixed vapour air exhauster extraction is discharged Agent, the hybrid gasification agent feed melting burner hearth from gasification agent inlet, and hybrid gasification agent also serves as gasification furnace First air and feeds gas Change an air compartment below stove gasification section.The condensed water that the hybrid gasification agent mixed process is produced is input into water-cooled system by pipeline System, the unnecessary cooling water of the water seal slag removing system are recycled using back water pump injection water-cooling system.

Described one end for being connected with gasification furnace of melting burner hearth is the garbage main-inlet of melting burner hearth, the melting burner hearth side Wall arranges garbage sub-inlet again, and the garbage sub-inlet connection garbage pair material-pulling device, garbage pair material-pulling device are used Below by gasification furnace, the residue of each air compartment is pushed in melting burner hearth, arranges inorganic waste on the laminar flow channel roof Entrance, the inorganic waste entrance connect inorganic waste material-pulling device, and the inorganic waste material-pulling device is for by pot The inorganic residues that furnace system is collected are pushed in laminar flow channel.

The upper end of the furnace chamber c is connected with the waste gas outlet of furnace chamber b upper ends, and the lower end of furnace chamber c arranges Waste gas outlet, institute State and in furnace chamber c, be provided with economizer, the water inlet of the economizer is connected with the outlet of feedwater input system, the economizer The soda pop inlet communication of outlet and drum.Flue gas purification system is also add in the present embodiment, and the Waste gas outlet of 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, sack cleaner, air inducing Machine, fine purifiation cleaner unit, chimney, the roof of the aeration tower arrange deacidification jetting device, and the side wall of aeration tower arranges activated carbon Jetting device.

The sour gas such as deacidification (lime white can be adopted), SOx, HCl, the HF in removing flue gas are sprayed into from aeration tower, it is low Warm neutralization reaction；Heavy metal, two English in activated carbon penetrating absorption flue gas etc.；Sack cleaner collects the flying dust in flue gas； Fine purifiation cleaner unit is quenched and washes flue gas formula pollutant, and collects micronic dust, realizes flue gas pollutant minimum discharge.

A kind of waste gasification melting furnace processing method, the method are carried out according to the following steps：

Step A, furnace lifting, baker；

The gate of waste gasification melting furnace and atmospheric vent is closed, starts waste gasification melting furnace, garbage is former The waste materials fallen from feed hopper are pushed feed hopper, gas by material input feed hopper, garbage pusher pusher back and forth Change the windrow seal section between stove, make windrow seal section form windrow sealing state, unnecessary garbage falls into the shifting of gasification furnace Dynamic siege, the moving hearth work of gasification furnace, until thickness 800- of the garbage needed for the moving hearth of gasification furnace is accumulated to 1000mm, stops to feed hopper feeding intake, and the moving hearth of garbage pusher and gasification furnace quits work, and starts high-temperature burner With side wall calandria baking melting burner hearth and the laminar flow channel of laminar flow channel, furnace lifting, baker are carried out to waste gasification melting furnace, Waste gasification melting furnace burner hearth is made to reach 600-700 DEG C of predetermined temperature；

Step B, garbage pyrolytic gasification in gasification furnace is made, residue enters melting in melting burner hearth；

Waste gasification melting furnace fire box temperature is gradually risen using high-temperature burner and calandria, recovers to feed hopper to throw The moving hearth of material, garbage pusher and gasification furnace is started working, and feeds gasifying agent, by adjusting into gasifying agent blender Air themperature, make hybrid gasification agent temperature stabilization at 400-500 DEG C, adjust gasification furnace each technological parameter, make garbage exist Pyrolytic gasification in gasification furnace, gasification furnace atmosphere temperature are stable at 800-900 DEG C, and gasification furnace falls cinder notch blanking, treats pyrolysis of waste Residue after gasifying inclines the thickness needed for being accumulated on siege in laminar flow, i.e. the 3/4-1 of laminar flow channel height, using high-temperature burner Waste gasification melting furnace fire box temperature is gradually risen with calandria, 1000 DEG C of residues is reached and is started melting, continued to heat up, continue Feed intake to feed hopper, persistently carry out pyrolytic gasification process, while the secondary material-pulling device residue of collecting each air compartment is from discarding Thing sub-inlet feeds, and according to the first exhanst gas outlet synthesis gas componentses, adjusts gasification agent inlet infeed amount and the gasification of melting burner hearth Each technological parameter of stove, temperature are increased to 1400-1600 DEG C, and garbage is in molten state；

Step C, inorganic waste is made to melt in the laminar flow channel；

When molten state slag progresses into laminar flow channel, the side wall calandria control of laminar flow channel ensures laminar flow channel temperature dimension Hold at 1400-1600 DEG C, material is pressed into using inorganic waste material-pulling device from inorganic waste entrance, with high-temperature molten-state slag Contact melting；

Step D, liquid slag water-cooled are solidified into vitreous body slag, and crush, deslagging；

Start water-cooling system and vitreous body pulverizer, when laminar flow channel is flowed out in the outlet of molten state slag Jing liquid slags, melting Slag obtains water-cooled, forms vitreous body slag, drops to, then falls into water seal slag removing system, Jing slag removers Transport is discharged, and liquid slag water-cooled produces steam, injects gasifying agent blender using steam air exhauster, and steam and high temperature air are formed Hybrid gasification agent, feeds melting burner hearth from gasification agent inlet, and hybrid gasification agent also serves as gasification furnace First air and feeds gasification hearth； The condensed water that mixed process is produced returns water-cooling system, and liquid slag Cooling Process produces unnecessary cooling water and is stored in water seal except slag system System, is recycled using back water pump injection water-cooling system；

Step E, treat castoff fusing slag arrange after rolling, close waste gasification melting furnace.

Need to overhaul or during blowing out, fall cinder notch, garbage sub-inlet and inorganic waste entrance of feed hopper, gasification furnace stops Charging, adjusts each technological parameter of waste gasification melting furnace, treats castoff fusing stream after rolling, close high-temperature burner and laminar flow The side wall calandria of passage, cleaning circulation air feed system, water-cooled crushing system and water seal slag removing system, closes castoff fusing solid Change processing system.

Finally illustrate, preferred embodiment above is only unrestricted to illustrate technical scheme, although logical Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be Various changes are made in form and to which in details, without departing from claims of the present invention limited range.

Claims (9)

1. a kind of waste gasification melt-combustion system, it is characterised in that：Including waste gasification melting furnace, steam generator system, institute Stating waste gasification melting furnace includes grate, and set gradually along feedstock direction on grate feed hopper, gasification furnace and molten Melt cured system, the melting and solidification processing system is located at the lower section of gasification furnace discharge end, the melting and solidification processing system System includes melting burner hearth, laminar flow channel, water-cooled crushing system and the water seal slag removing system set gradually along feedstock direction, described molten Melt burner hearth side wall and be provided with high-temperature burner, gasification agent inlet, for making from gasification furnace to enter the castoff fusing of melting burner hearth, The laminar flow channel is located at below melting burner hearth discharge end, and laminar flow channel bottom is that laminar flow inclines siege, the broken system of the water-cooled System includes water-cooling system, waterway and vitreous body pulverizer, and the waterway is located at laminar flow channel front lower place, at the top of waterway Spray assemblies and steam (vapor) outlet are set, and, by the water input spray assemblies for water-cooled, the steam (vapor) outlet is defeated for the water-cooling system Go out the steam of water-cooled generation, the vitreous body pulverizer is arranged in the middle part of waterway, for what is formed after crushing liquid slag water-cooled Vitreous body slag, the water seal slag removing system is located at the lower section of waterway, the discharge end connection vitreous body slag row of water seal slag removing system Outlet, the water seal slag removing system are used for sealing waterway lower end, vitreous body slag is further cooled down, and exports vitreous body slag.

2. waste gasification melt-combustion system according to claim 1, it is characterised in that：On the melting burner hearth roof Water conservancy diversion rear arch and baffle pier is provided with, makes flue gas horizontally enter into gasification hearth, increase the radiating surface of garbage and the cigarette of gasification hearth Gas disturbance.

3. waste gasification melt-combustion system according to claim 1, it is characterised in that：The laminar flow inclines siege and goes out Material end arranges liquid slag height controller, and the height controller includes baffle plate and the driving for driving baffle plate flexible Part.

4. waste gasification melt-combustion system according to claim 1, it is characterised in that：The laminar flow channel side wall sets Putting calandria carries out aiding in heating and insulation.

5. waste gasification melt-combustion system according to claim 1, it is characterised in that：The grate is provided with discarded Owner's pusher, the garbage promote mainly glassware positioned at the lower section of feed hopper, for the garbage in feed hopper is pushed gasification In stove, windrow seal section between the feed hopper, gasification furnace, is provided with, base material is set on the roof of the windrow seal section and is given Material mouth, the base material material inlet connect base material feeder, and the base material feeder is by base material Jing Base material material inlet pushes windrow seal section.

6. waste gasification melt-combustion system according to claim 5, it is characterised in that：The mobile stove of the gasification furnace Edge of bed feedstock direction is divided into dryer section, gasification section, and the dryer section of the gasification furnace, that gasification section is respectively arranged below with least one is only The air compartment put is erected, wherein, an air compartment below dryer section is air-supplied, an air compartment below gasification section feeds mixed Gasifying agent is closed, the gasification furnace is respectively provided with secondary confession air port, the gas in the shape that arches upward on the face arch of the gasification furnace, rear arch The vault for changing stove arranges the first exhanst gas outlet；

The steam generator system includes boiler body, circulation air feed system, and the boiler body has cyclone combustion chamber, furnace chamber a, stove Room b, the lower end of the cyclone combustion chamber arrange smoke inlet, and the smoke inlet of cyclone combustion chamber is connected with the first exhanst gas outlet, Denitrfying agent jetting device is set on the pipeline that the smoke inlet of cyclone combustion chamber is connected with the first exhanst gas outlet, for entering to flue gas Row denitration process, cyclone combustion chamber upper end are the 3rd exhanst gas outlet, and the cyclone combustion chamber is provided with some combustion airs and supplies air port, Some combustion airs are located between smoke inlet, the 3rd exhanst gas outlet for air port, and the 3rd flue gas of cyclone combustion chamber upper end goes out Mouth is connected with the upper end of furnace chamber a, the furnace chamber a, the lower end connection of furnace chamber b, and the upper end of the furnace chamber b arranges waste gas outlet, institute State in cyclone firing room circumferentially arranged with water-cooling wall in a ring, be provided with superheater in the furnace chamber a, be provided with furnace chamber b Vaporizer, the top of boiler body arrange drum, and the cyclone combustion chamber, furnace chamber a, furnace chamber b are respectively positioned on below drum, the vapour Wrap and be provided with soda pop import, in drum, be provided with water separator, for separating steam water interface, drum passes through the first down-comer The water inlet of connection water-cooling wall, for exporting the water that water separator is isolated, drum is by the connection evaporation of the second down-comer The water inlet of device, for exporting the water that water separator is isolated, the water-cooling wall, the venthole of vaporizer pass through vapour respectively Pipe connects the air intake of drum, and for the high-temperature steam that flows back, the saturated vapor outlet of the drum connects superheater by pipeline Air intake, for will be in the high-temperature steam input superheater of backflow, the venthole of superheater output superheated steam；

It is described circulation air feed system include steam air exhauster, for blower fan, gasifying agent blender, the arrival end of the steam air exhauster It is connected with the steam (vapor) outlet at the top of waterway by pipeline, the steam produced in the waterway injects institute by steam air exhauster An air inlet of gasifying agent blender is stated, the air inlet and atmosphere of the confession blower fan, the gas outlet of the confession blower fan connect Connect the air preheater arranged at furnace chamber b waste gas outlets, the air preheater connects the house steward of a manifold, the manifold Pipe respectively with gasifying agent blender another air inlet, gasification furnace dryer section below an air compartment, gasification furnace secondary air feed Combustion air on mouth and the cyclone combustion chamber is connected for air port, and the gasifying agent blender is taken out for mixed vapour air exhauster The high temperature air that the steam for going out and steam generator system are discharged forms hybrid gasification agent, and the hybrid gasification agent is fed from gasification agent inlet Melting burner hearth, hybrid gasification agent also serve as gasification furnace First air and feed an air compartment below gasification furnace gasification section.

7. waste gasification melt-combustion system according to claim 6, it is characterised in that：Sky is provided with the furnace chamber b Gas reheater, the gasifying agent blender connect the manifold by pipeline after pipeline connects air reheater again.

8. waste gasification melt-combustion system according to claim 6, it is characterised in that：The melting burner hearth and gasification One end of stove connection is the garbage main-inlet for melting burner hearth, and the melting burner hearth side wall arranges garbage sub-inlet again, described Garbage sub-inlet connection garbage pair material-pulling device, garbage pair material-pulling device is for by each air compartment below gasification furnace Residue is pushed in melting burner hearth, arranges inorganic waste entrance on the laminar flow channel roof, and the inorganic waste entrance connects Inorganic waste material-pulling device is connect, the inorganic waste material-pulling device pushes layer for the inorganic residues for collecting steam generator system In circulation road.

9. waste gasification melt-combustion system according to claim 6, it is characterised in that：The hybrid gasification agent mixing The condensed water that process is produced is input into water-cooling system by pipeline, and the unnecessary cooling water of the water seal slag removing system utilizes backwater infusion Enter water-cooling system recycling.