CN106642138B - waste gasification melting furnace - Google Patents
waste gasification melting furnace Download PDFInfo
- Publication number
- CN106642138B CN106642138B CN201611252449.2A CN201611252449A CN106642138B CN 106642138 B CN106642138 B CN 106642138B CN 201611252449 A CN201611252449 A CN 201611252449A CN 106642138 B CN106642138 B CN 106642138B
- Authority
- CN
- China
- Prior art keywords
- gasification
- waste
- melting
- furnace
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/10—Drying by heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/40—Gasification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a kind of waste gasification melting furnaces, handle rubbish using the present invention, rubbish conveying capacity is stronger, garbage treatment quantity is bigger, thermal losses can be reduced and improve heat exchanger effectiveness, the recovery efficiency of heat is higher, and can efficiently reduce pollutant discharge amount.Including grate, and feed hopper, gasification furnace and the melting and solidification processing system set gradually on grate along feedstock direction, melting and solidification processing system includes the melting burner hearth set gradually along feedstock direction, laminar flow channel, water cooling crushing system and water seal slag removing system, melting burner hearth side wall is provided with high-temperature burner, gasification agent inlet, water cooling crushing system includes water-cooling system, waterway and vitreum pulverizer, and the discharge end of water seal slag removing system connects vitreum slag outlet.
Description
Technical field
The invention belongs to Waste Disposal Technology field more particularly to a kind of waste gasification melting furnaces.
Background technique
Existing Waste Disposal Technology mainly has burning, sanitary landfills, compost, waste recovery etc..In offal treatment
In routine techniques, burning disposal has reduced training obvious, and innoxious thorough, land occupation amount is small, and waste heat energy is utilized, secondary dirt
The advantages that dye is few, meets the strategic requirement of China's sustainable development.But with both at home and abroad to the continuous improvement of environmental requirement, how
Enhance particularly important to the control of secondary pollution.Therefore, pyrolysis of waste gasification burning technology is gradually shifted onto industrial applications
Road on, especially for domestic various wastes primarily now using all kinds of incineration technologies, gasification burning and gasification
Fusion technology, which widely industrializes, will bring the technological innovation of domestic offal treatment industry to regenerate.
For many years, China to biomass, house refuse, medical waste, the Changjiang river floating material, domestic sludge, oily sludge and
The scientific research of the gasification&melting technologies such as electronic product is in progress a lot of, and there are many basic research in laboratory, also there is application study,
Such as：Rotary kiln type, vertical and fluidized bed type destructive gasifying or temperature gasification and high fusion technology etc..But Technique Popularizing using it is upper still
There are certain restrictions, raw material type, offal treatment amount, secondary pollution control and economic benefit etc. are principal elements.
In existing burning process and equipment, fire grate type incinerator is various informative, and application accounts for the whole world and burns market
80% or more of total amount also has use wherein mainly using mechanical backstepping fire grate, forwards fire grate or combined fire grate in furnace body
The fire grates such as chain-plate type and drum-type.The domestic rapid development Jing Guo last decade, the popularization and application of fire grate type incinerator have obtained state
The attention of family and various circles of society, burning market at home has absolute predominance.
In conclusion typical incinerator and melting furnace, respectively have its own advantage, but in China's practical application
Middle problem to be solved and deficiency：
1. the technology of moving hearth uses, to rubbish for characteristics such as China's house refuse water content height, complicated components
Conveying capacity needs emphasis to consider.
2. pile up like a mountain with being increasing for waste yield, treating capacity must be effectively improved, Cai Nengshi
In response to the market demand.
3. secondary pollution control is the key problem for technically needing to solve in face of stringent pollutant emission requirement.
4. in heat treatment process, the recovery efficiency of heat needs to improve in order to effectively increase economic efficiency.It is existing useless
Gurry heat treatment technics generallys use burning release heat, and boiler conversion generates steam and shifts steam turbine power generation, entire transition heat onto
Efficiency losses are larger, handle identical quantity of refuse, and opposite reduction thermal losses and raising heat exchanger effectiveness can improve the thermal efficiency.
Existing incinerator such as following two patent of invention：Multiple row sectional drive combined type domestic garbage incinerator
(ZL200710092508.9) an open question and in two-stage garbage incinerator (ZL201010268376.2)：Castoff heat
Tupe is relatively backward, only dry-burns-burns, and solid combustion discharges the process of heat；Thermal chemical reaction is in furnace with oxygen
Change based on reaction, reduction reaction auxiliary is also easy to produce secondary pollution；When waste burns in furnace, oxygen quotient excessively is big, once
Wind, Secondary Air infeed amount are big, and dust content is higher in flue gas, are affected to heat reclaiming system and smoke processing system, hold
Easy dust stratification, exhaust gas volumn is larger, reduces thermal conversion efficiency；The gasification furnace and incinerator not being separately provided, can only be handled by several times
Rubbish, cannot achieve large-scale waste continuous gasification burning disposal, and garbage treatment quantity is smaller.
Existing melting furnace such as following two technology：
First, gasification and melting focuses on technology.Such as a kind of plasma asistance heating melting gasification reactor
(CN201410744643.7), waste gasification melting furnace (CN201280068994.X), domestic waste oxygen top blown are straight
Fusion and gasification, and combustion and its generation technology (CN01107088.9) and other pot type gasification and melting centralized processing technologies are connect, wherein not
It solves the problems, such as：Castoff heat tupe is more advanced, but mainly continues the thinking of fixed bed or fluidized bed, is done
Dry-pyrolysis-gasification-burning (can also without burning)-melting, heat treatment process continuity is bad, and each phase process rhythm is difficult to
Match, and the recycling link of heat considers that not enough economy is poor, cannot achieve large-scale waste continuous gasification melting
Processing, treating capacity is smaller, 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 unit 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 and fix
The thinking of bed or fluidized bed is dried-pyrolysis-and gasifies-burn (can also without burning)-melting, main gasification and melting rank
Section is separated in different equipment and carries out, and heat treatment process continuity is preferable, but the rhythm between separation phase is still difficult to
Match, and the recycling link of heat considers that not enough economy is poor, cannot achieve large-scale waste continuous gasification melting
Processing, treating capacity is smaller, and it is imperfect to melt Slag treatment.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of waste gasification melting furnaces, use this hair
Rubbish is managed in daylight, and rubbish conveying capacity is stronger, and garbage treatment quantity is bigger, can reduce thermal losses and improve heat exchanger effectiveness, heat
The recovery efficiency of amount is higher, and can efficiently reduce pollutant discharge amount.
The object of the present invention is achieved like this：
A kind of waste gasification melting furnace, the waste gasification melting furnace includes grate, and along charging on grate
Feed hopper, gasification furnace and the melting and solidification processing system that direction is set gradually, the melting and solidification processing system are located at gasification furnace
The lower section of discharge end, the melting and solidification processing system include melting burner hearth, laminar flow channel, the water set gradually along feedstock direction
Cold crushing system and water seal slag removing system, the melting burner hearth side wall are provided with high-temperature burner, gasification agent inlet, for make from
Gasification furnace enters the castoff fusing of melting burner hearth, and the laminar flow channel is located at below melting burner hearth discharge end, laminar flow channel bottom
Portion is that laminar flow tilts siege, and the water cooling crushing system includes water-cooling system, waterway and vitreum pulverizer, the water cooling
Chamber is located at laminar flow channel front lower place, and setting spray assemblies and steam (vapor) outlet, the water-cooling system will be used for water cooling at the top of waterway
Water input spray assemblies, the steam that steam (vapor) outlet output water cooling generates, the vitreum pulverizer is arranged in waterway
Middle part, for crushing the vitreum slag formed after liquid slag water cooling, the water seal slag removing system is set to the lower section of waterway, water seal
The discharge end of slag removing system connects vitreum slag outlet, and the water seal slag removing system prevents cigarette for sealing waterway lower end
Gas evolution, further cools down vitreum slag, and export vitreum slag.
In order to realize large-scale waste gasification melt process, it may be preferable that the melting burner hearth roof is equipped with water conservancy diversion
Rear arch and baffle pier, make flue gas horizontally enter into gasification hearth, increase the radiating surface of waste and the flue gas disturbance of gasification hearth.
In order to control the discharging speed of laminar flow channel, various operating conditions are successfully managed, it may be preferable that the laminar flow inclination siege goes out
Expect that liquid slag height controller is arranged in end, the height controller includes baffle and the driving for driving baffle flexible
Part.
In order to guarantee that the temperature in laminar flow channel controls, it is preferable that the laminar flow channel side wall setting calandria carries out auxiliary
Help heating and heat preservation.
Preferably, the grate is equipped with waste and promotes mainly glassware, and the waste is promoted mainly glassware and is located under feed hopper
Side, for being equipped with windrow seal section, institute between the feed hopper, gasification furnace in the waste push-in gasification furnace in feed hopper
State setting base material material inlet on the roof of windrow seal section, the base material material inlet connection base material feed dress
It sets, base material is pushed into windrow seal section through base material material inlet by the base material feeder, is used for waste
The element portions such as sulphur, copper, iron during gasification and melting are converted into stable compound, and fluxing to liquid slag.
In order to improve capacity usage ratio and reduce water resources consumption, it is preferable that the moving hearth of the gasification furnace along into
Material direction is divided into dryer section, gasification section, and dryer section, the gasification section of the gasification furnace are respectively arranged below at least one and are independently arranged
An air compartment, wherein an air compartment below dryer section is air-supplied, and an air compartment below gasification section feeds mixing gasifying
Agent, the gasification furnace in arching upward shape, be respectively set on the face arch of the gasification furnace, rear arch it is secondary for air port, the gasification furnace
The first exhanst gas outlet is arranged in vault；
Further include steam exhaust fan, for blower, gasifying agent mixer, the arrival end of the steam exhaust fan by pipeline with
Steam (vapor) outlet at the top of waterway connects, and the steam generated in the waterway, which injects the gasifying agent by steam exhaust fan, to be mixed
One air inlet of clutch, the air inlet for blower are communicated with the atmosphere, and the gas outlet for blower connects a manifold
General pipeline, the branch pipe of the manifold respectively with below gasifying agent mixer another air inlet, gasification furnace dryer section an air compartment,
The secondary of gasification furnace is connected to for air port, and the gasifying agent mixer is used for the steam of mixed vapour exhaust fan extraction and mentions for blower
The air of confession forms hybrid gasification agent, and the hybrid gasification agent feeds melting burner hearth from gasification agent inlet, and hybrid gasification agent is also made
An air compartment below gasification furnace gasification section is fed for gasification furnace First air.
In order to improve capacity usage ratio, residue discharge amount is reduced, it is preferable that one for melting burner hearth and connecting with gasification furnace
End is the waste main-inlet of melting burner hearth, and waste sub-inlet is arranged in the melting burner hearth side wall again, and the waste pair enters
Mouth connection waste pair material-pulling device, waste pair material-pulling device, which is used to for the residue of an air compartment each below gasification furnace being pushed into, to be melted
Melt in burner hearth.
In order to reduce water resources consumption amount, it is preferable that the condensed water that the hybrid gasification agent mixed process generates passes through pipe
Road inputs water-cooling system, and the extra cooling water of the water seal slag removing system is recycled using back water pump injection water-cooling system.
By adopting the above-described technical solution, the present invention has the advantages that：
The present invention is carried out in same equipment using stoker fired grate, refuse gasification and melt stage, and heat treatment process is continuous
Property preferable, the rhythm matching between each stage, the recycling link of heat fully considers, better economy, can be realized big
The rubbish continuous gasification melt process of scale, garbage treatment quantity is 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 undergoes dry, gasification and melting rank on stoker fired grate
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, it is effectively prevent secondary pollution, and can be realized large-scale rubbish continuous gasification melting
Processing guarantees refuse gasification melting effect and lime-ash clinker ignition loss, opposite to reduce thermal losses and improve heat exchanger effectiveness, improves
The thermal efficiency.
From the pressure change of the-the first exhanst gas outlet of melting furnace-gasification furnace, gasification furnace disturbance effect, baffle pier shape are enhanced
At split channel increase high-temperature flue gas radiating surface.
The present invention effectively carries out secondary pollutant control, realizes minimizing, Harmless and Comprehensive Disposal, specific method is such as
Under：
1 inhibits to reduce the secondary pollutions such as SOx, NOx from melting furnace source by base material (lime can be used)
The catalyst members such as Fe, Cu that generation and secondary pollution synthesize again are converted to stable compound；
2 high-temperature fusions decompose, solidifys toxicant in bottom ash and flying dust, and realization garbage incinerating power plant is without dangerous waste bottom ash
Discharge is laid a good foundation for directly landfill or resource utilization.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of melting and solidification processing system；
Fig. 3 is the A-A schematic cross-sectional view of Fig. 2；
Fig. 4 is the structural schematic diagram for moving towards section view in Fig. 2 at B along flue gas；
Fig. 5 is the C-C schematic cross-sectional view of Fig. 2；
Fig. 6 is the D-D schematic cross-sectional view of Fig. 2；
Fig. 7 is the structural schematic diagram of boiler system in Fig. 1；
Fig. 8 is cyclone combustion chamber structural schematic diagram in Fig. 7；
Fig. 9 is the schematic top plan view of Fig. 8.
Appended drawing reference
1 is incinerator, and 101 be grate, and 102 be feed hopper, and 103 be gasification furnace, and 105 be siege, and 106 be waste
Featured glassware, 107 be an air compartment, and 108 be windrow seal section, and 112 be the first exhanst gas outlet, and 115 be secondary for air port；
201 be steam exhaust fan, and 202 is, for blower, 203 are gasifying agent mixer, and 204 be manifold, and 205 add again for air
Hot device；
3 be cyclone combustion chamber, and 301 be combustion chamber ignition combustion-supporting hole, and 302 be cone cell slag notch, and 303 be smoke inlet, 304
It is combustion air for air port for third exhanst gas outlet, 305；
4 be boiler body, and 402 be furnace chamber a, and 404 be furnace chamber c, and 405 be water-cooling wall, and 406 be superheater, and 407 be evaporation
Device, 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 input for water supply
System, 418 be economizer, and 419 be flue gas purification system, and 420 be aeration tower, and 421 be bag filter, and 422 be air-introduced machine,
423 be chimney, and 424 be air preheater, and 425 be fine purifiation deduster, and 426 be depickling drug jetting device, and 427 spray into for active carbon
Device；
5 be melting and solidification processing system, and 51 be melting burner hearth, and 52 be laminar flow channel, and 53 be water-cooling system, and 54 remove for water seal
Slag system, 55 be high-temperature burner, and 56 be gasification agent inlet, and 57 tilt siege for laminar flow, and 58 be waterway, and 59 be vitreum powder
Broken machine, 510 be spray assemblies, and 511 be steam (vapor) outlet, and 512 be water conservancy diversion rear arch, and 513 be baffle pier, and 514 be height controller,
515 be calandria, and 516 be vitreum slag outlet, and 517 be base material feeder, and 518 be waste main-inlet, and 519 are
Waste sub-inlet, 520 be waste pair material-pulling device, and 521 inorganic waste entrances, 522 be inorganic waste material-pulling device,
523 be back water pump, and 524 be rewinding clinohedral, and 525 be maintenance door, and 526 be slag remover, and 527 be denitrfying agent jetting device, and 528 are
Gasification furnace side wall, 529 be shunting flue.
Specific embodiment
It is a kind of preferred embodiment of waste gasification melting furnace referring to Fig. 1 to Fig. 9.The present embodiment also adds pot
Furnace system, the waste gasification melting furnace includes grate, and the feed hopper, the gas that set gradually on grate along feedstock direction
Change furnace and melting and solidification processing system, the discharge end of melting and solidification processing system is vitreum slag outlet.
The grate is equipped with waste and promotes mainly glassware, and the waste is promoted mainly the lower section that glassware is located at feed hopper, is used for
By in the waste push-in gasification furnace in feed hopper, windrow seal section is equipped between the feed hopper, gasification furnace, the windrow is close
It seals and base material material inlet is set on the roof of section, 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 waste, subtracted by base material feeder
Of low pollution object enters in flue gas；The melting temperature of part residue can be suitably reduced simultaneously) windrow is pushed into through base material material inlet
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
To change section and is respectively arranged below at 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
It is respectively set secondary for air port, vault the first exhanst gas outlet of setting of the gasification furnace.
The discharge end of the gasification furnace is the slag mouth of gasification furnace, and melting and solidification processing system is located at gasification furnace slag mouth
Front lower place, the melting and solidification processing system include melting burner hearth, laminar flow channel, water cooling crushing system and water seal slag removing system,
Water cooling crushing system and water seal slag removing system are equipped with water charging system, be equipped at the top of the melting and solidification processing system water conservancy diversion rear arch and
Baffle pier, the water conservancy diversion rear arch of the melting roof of the furnace setting are that arc (can be arc-shaped, involute arc, realize flue gas
Smooth deflecting), melt that the flue gas in burner hearth is vertically moving to be entered on the inside of water conservancy diversion rear arch, cigarette after arc rear arch water conservancy diversion
The gas histogram that flattens (makes flue gas horizontally enter into gasification hearth with certain speed, increases the radiating surface and gasification furnace of waste to movement
The flue gas of thorax disturbs)；The baffle pier extends in the middle part of gasification furnace rear arch from water conservancy diversion rear arch flat segments, and is arranged multiple points
Flow pier, corresponding grate surface quantity formed multiple shuntings flues (be multiple (2 or more) grate surfaces for fire grate, melt burner hearth compared with
It is small, so that flue gas is radiated each grate surface, increase the radiating surface of waste and the flue gas disturbance of gasification hearth), the gasification
Furnace slag mouth is multiple rewinding clinohedrals composition of corresponding grate surface quantity.
The melting burner hearth side wall is provided with high-temperature burner, gasification agent inlet and waste sub-inlet (waste major-minor
It feeds organic and inorganic, need to it be gasified and be melted)；It is described melting burner hearth side wall setting high-temperature burner be 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), diagonally downward, 30-60 ° of angle with horizontal plane (utilizes melting furnace diameter, mounting height, flame to high-temperature burner entrance
The boundaries condition design such as length, number of burners and size, discarded species, treating capacity), (supplement is molten for the gasification agent inlet
Melt O2, H2O and CO2 needed for chemically reacting in burner hearth etc.) be set to below waste sub-inlet, and in castoff fusing slag it
On, diagonally downward, 10-30 ° of angle with horizontal plane (utilizes melting furnace diameter, mounting height, gasifying agent to the gasification agent inlet
Entry number and the boundaries condition design such as size, discarded species, treating capacity), the hybrid gasification agent is entered by adjusting
The air themperature of gasifying agent mixer stablizes hybrid gasification agent temperature at 400-500 DEG C.
The laminar flow channel bottom is that laminar flow tilts siege, and laminar flow tilts siege end setting liquid slag height and controls dress
It sets, calandria (auxiliary heating and heat preservation) is arranged in side wall, and setting inorganic waste in top (only melts) entrance to it；It is described
The laminar flow inclination siege of laminar flow channel bottom is set as along liquid slag flow direction diagonally downward, and angle with horizontal plane is 5-15 °
(the boundaries condition design such as discarded species, the mobility of liquid slag, viscosity, treating capacity, residence time), the liquid slag height
Control device and laminar flow inclination siege are vertically arranged (the scalable control liquid slag height of device)；Along liquid slag flow direction two sides
Wall is respectively provided with calandria, and the calandria is that high energy electric heater or plasma generator (assist heating and heat preservation, can maintain
1400-1600 DEG C of high temperature of melting zone)；The inorganic waste entrance inclined direction of the top setting is along liquid slag flowing side
To angle with horizontal plane is the 60-80 ° of (boundaries such as discarded species, the mobility of liquid slag, viscosity, treating capacity, residence time
Condition design, inorganic waste pressure squeeze into melting zone, can effectively decompose the pollutants such as bioxin, realize containing heavy metal
The melt process of bottom ash, flying dust etc.).
Maintenance door is arranged in setting spray assemblies and steam (vapor) outlet at the top of the waterway of the water cooling crushing system, side wall, in
Vitreum pulverizer is arranged in portion, and water seal slag removing system is arranged in bottom.The spray assemblies of the water cooling crushing system are set to melting
Slag outlet top, vertical direction face liquid slag outlet (can just water cooling to liquid slag ontology, curing heavy metal), spray assemblies
In the both walls setting spray inlet (strengthening boundary water cooling, prevent boundary cooling insufficient) of waterway, angle with horizontal plane is
30-60 ° (utilizes the perimeter strips such as water cooling chamber size, mounting height, spray length, quantity and size, discarded species, treating capacity
Part design), the steam (vapor) outlet is set to far from liquid slag outlet outside top (a large amount of high-temperature steams can exclude).It is described to set
The vitreum pulverizer being placed in the middle part of waterway is located at liquid slag outlet lower section, and vitreum pulverizer is embedded in laminar flow uphill furnace bed
Lower section, be embedded in having a size of two crushing wheel installation dimensions arranged side by side 1/4-3/4 (realize vitreum slag enter two crushing wheels it
Between), two crushing wheel energy positive and negative rotations work (preventing from getting stuck).
The steam utilization steam exhaust fan injection gasifying agent mixer generated in the waterway, the gasifying agent mixer
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 generates returns to water-cooling system.The extra cooling water of the water seal slag removing system injects water using back water pump
Cooling system is recycled.
The boiler system includes boiler body, circulation air feed system, and the boiler body has cyclone combustion chamber, furnace chamber
A, smoke inlet, the smoke inlet of cyclone combustion chamber and the first flue gas is arranged in the lower end of furnace chamber b, furnace chamber c, the cyclone combustion chamber
Denitrfying agent jetting device is arranged on the pipeline that the smoke inlet of cyclone combustion chamber is connect with the first exhanst gas outlet for outlet, uses
In carrying out denitration process to flue gas, liquefied ammonia is can be used in denitrfying agent, removes the NOx in flue gas, high temperature denitration；Cyclone combustion chamber upper end
For third exhanst gas outlet, the cyclone combustion chamber is equipped with several combustion airs for air port, and several combustion airs are located at for air port
Between smoke inlet, third exhanst gas outlet, the third exhanst gas outlet of cyclone combustion chamber upper end is connected to the upper end of furnace chamber a, described
The lower end connection of furnace chamber a, furnace chamber b, the upper end of the furnace chamber b are arranged waste gas outlet, in the cyclone firing room circumferentially arranged with
Water-cooling wall in a ring is provided with superheater in the furnace chamber a, and evaporator, the top setting of boiler body are provided in furnace chamber b
Drum, the cyclone combustion chamber, furnace chamber a, furnace chamber b are respectively positioned below drum, and the drum is equipped with carbonated drink import, are set in drum
There is water separator, for separating steam water interface, drum connects the water inlet of water-cooling wall by the first down-comer, for defeated
The water that water separator is isolated out, drum connect the water inlet of evaporator by the second down-comer, for exporting carbonated drink point
From the water that device is isolated, the water-cooling wall, evaporator venthole respectively by steam pipe connect drum air intake, be used for back
High-temperature steam is flowed, the saturated vapor outlet of the drum connects the air intake of superheater, the high temperature for will flow back by pipeline
Steam inputs in superheater, and the venthole connection steam output device of the superheater exports superheated steam, steam output device
It has utilized the condensed water of steam generation to input to water input system to recycle.
The circulation air feed system includes steam exhaust fan, for blower, gasifying agent mixer, and the steam exhaust fan enters
Mouth end is connect by pipeline with the steam (vapor) outlet at the top of waterway, and the steam generated in the waterway is infused by steam exhaust fan
Enter an air inlet of the gasifying agent mixer, the air inlet for blower is communicated with the atmosphere, the outlet for blower
The air preheater being arranged at mouth connection furnace chamber b waste gas outlet, the air preheater connect the general pipeline of a manifold, the manifold
Branch pipe respectively with below gasifying agent mixer another air inlet, gasification furnace dryer section an air compartment, gasification furnace it is secondary
It is connected to for the combustion air on air port and the cyclone combustion chamber for air port, in the present embodiment, is equipped with air again in the furnace chamber b
Heater, the gasifying agent mixer connect the manifold by pipeline again after connecting air reheater by pipeline.It is described
Gasifying agent mixer forms mixing gasifying for the steam of mixed vapour exhaust fan extraction and the high temperature air of boiler system discharge
Agent, the hybrid gasification agent feed melting burner hearth from gasification agent inlet, and hybrid gasification agent is also used as gasification furnace First air to feed gas
Change an air compartment below furnace gasification section.The condensed water that the hybrid gasification agent mixed process generates inputs water cooling system by pipeline
System, the extra cooling water of the water seal slag removing system are recycled using back water pump injection water-cooling system.
One end that the melting burner hearth is connect with gasification furnace is the waste main-inlet for melting burner hearth, the melting burner hearth side
Waste sub-inlet is arranged in wall again, and the waste sub-inlet connects waste pair material-pulling device, and waste pair material-pulling device is used
In in the residue push-in melting burner hearth by an air compartment each below gasification furnace, inorganic waste is set 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 used for pot
In the inorganic residues push-in laminar flow channel that furnace system is collected.
The upper end of the furnace chamber c is connected to the waste gas outlet of the upper end furnace chamber b, and Waste gas outlet, institute is arranged in the lower end of furnace chamber c
It states and is equipped with economizer in furnace chamber c, the water inlet of the economizer is connected to the water outlet to water input system, the economizer
The carbonated drink inlet communication of water outlet and drum.Flue gas purification system is also added in the present embodiment, the Waste gas outlet of furnace chamber c connects
Flue gas purification system is connect, the flue gas purification system includes the aeration tower, bag filter, air inducing being sequentially connected in series along discharge directions
Depickling drug jetting device is arranged in machine, fine purifiation deduster, chimney, the roof of the aeration tower, and active carbon is arranged in the side wall of aeration tower
Jetting device.
Depickling drug (lime white can be used) is sprayed into from aeration tower, removes the sour gas such as SOx, HCl, HF in flue gas, it is low
Warm neutralization reaction；Active carbon sprays into the heavy metal, bioxin etc. in absorption flue gas；Bag filter collects the flying dust in flue gas；
Fine purifiation deduster, which is quenched, washes flue gas formula pollutant, and collects micronic dust, realizes flue gas pollutant minimum discharge.
A kind of waste gasification melting furnace processing method, this method carry out according to the following steps：
Step A, furnace lifting, baker；
The gate of waste gasification melting furnace and atmospheric vent is closed, waste gasification melting furnace is started, by waste original
The waste materials fallen from feed hopper are pushed into feed hopper, gas by material investment feed hopper, waste pusher pusher back and forth
Change the windrow seal section between furnace, windrow seal section is made to form windrow sealing state, extra waste falls into the shifting of gasification furnace
Dynamic siege, the moving hearth work of gasification furnace, until waste is accumulated to required thickness 800- in the moving hearth of gasification furnace
1000mm stops feeding intake to feed hopper, and the moving hearth of waste pusher and gasification furnace stops working, and starts high-temperature burner
With the side wall calandria baking melting burner hearth and 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 set to reach 600-700 DEG C of predetermined temperature；
Step B, make waste pyrolytic gasification in gasification furnace, residue enters melting in melting burner hearth；
Waste gasification melting furnace fire box temperature is gradually risen using high-temperature burner and calandria, restores to throw to feed hopper
The moving hearth of material, waste pusher and gasification furnace is started to work, and gasifying agent is fed, and enters gasifying agent mixer by adjusting
Air themperature, make hybrid gasification agent temperature stablize at 400-500 DEG C, adjust each technological parameter of gasification furnace, waste made to exist
Pyrolytic gasification in gasification furnace, gasification furnace atmosphere temperature are stablized at 800-900 DEG C, gasification furnace slag mouth blanking, to pyrolysis of waste
Residue after gasifying is accumulated to required thickness, the i.e. 3/4-1 of laminar flow channel height on laminar flow inclination siege, utilizes high-temperature burner
Waste gasification melting furnace fire box temperature is gradually risen with calandria, reaches 1000 DEG C of residues and starts to melt, continue to heat up, is continued
It feeds intake to feed hopper, persistently carries out pyrolytic gasification process, while the secondary material-pulling device residue of collecting each air compartment is from discarding
The charging of object sub-inlet adjusts the gasification agent inlet infeed amount and gasification of melting burner hearth according to the first exhanst gas outlet synthesis gas components
Each technological parameter of furnace, temperature are increased to 1400-1600 DEG C, and waste is in molten state；
Step C, melt inorganic waste in laminar flow channel；
When molten state slag progresses into laminar flow channel, the side wall calandria control of laminar flow channel guarantees laminar flow channel temperature dimension
It holds at 1400-1600 DEG C, material is pressed into from inorganic waste entrance using inorganic waste material-pulling device, with high-temperature molten-state slag
Contact melting；
Step D, liquid slag water cooling is solidified into vitreum slag, and is crushed, deslagging；
Start water-cooling system and vitreum pulverizer, when molten state slag exports outflow laminar flow channel through liquid slag, melting
Slag obtains water cooling, forms vitreum slag, falls on vitreum pulverizer and is crushed, then fall into water seal slag removing system, through slag remover
Transport discharge, liquid slag water cooling generate steam, inject gasifying agent mixer using steam exhaust fan, steam and high temperature air are formed
Hybrid gasification agent feeds melting burner hearth from gasification agent inlet, and hybrid gasification agent is also used as gasification furnace First air to feed gasification hearth；
The condensed water that mixed process generates returns to water-cooling system, and liquid slag Cooling Process generates extra cooling water deposit water seal except slag system
System is recycled using back water pump injection water-cooling system；
Step E, after rolling to castoff fusing slag row, waste gasification melting furnace is closed.
It need to overhaul or when blowing out, feed hopper, gasification furnace slag mouth, waste sub-inlet and inorganic waste entrance stop
Charging adjusts each technological parameter of waste gasification melting furnace, after rolling to castoff fusing stream, closes high-temperature burner and laminar flow
The side wall calandria in channel, cleaning circulation air feed system, water cooling crushing system and water seal slag removing system, it is solid to close castoff fusing
Change processing system.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand 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 (8)
1. a kind of waste gasification melting furnace, it is characterised in that：The waste gasification melting furnace includes grate, and in grate
On the feed hopper, gasification furnace and the melting and solidification processing system that are set gradually along feedstock direction, melting and solidification processing system position
In the lower section of gasification furnace discharge end, the melting and solidification processing system includes melting burner hearth, the layer set gradually along feedstock direction
Circulation road, water cooling crushing system and water seal slag removing system, the melting burner hearth side wall is provided with high-temperature burner, gasifying agent enters
Mouthful, the castoff fusing for making to enter melting burner hearth from gasification furnace, the laminar flow channel is located at below melting burner hearth discharge end,
Laminar flow channel bottom is that laminar flow tilts siege, and the water cooling crushing system includes that water-cooling system, waterway and vitreum crush
Machine, the waterway are located at laminar flow channel front lower place, setting spray assemblies and steam (vapor) outlet at the top of waterway, the water-cooling system
The water for being used for water cooling is inputted into spray assemblies, the steam that the steam (vapor) outlet output water cooling generates, the vitreum pulverizer is set
It sets in the middle part of waterway, for crushing the vitreum slag formed after liquid slag water cooling, the water seal slag removing system is set to waterway
Lower section, the discharge end of water seal slag removing system connects vitreum slag outlet, and the water seal slag removing system is for sealing waterway
Lower end further cools down vitreum slag, and exports vitreum slag.
2. waste gasification melting furnace according to claim 1, it is characterised in that：The melting burner hearth roof is equipped with and leads
Rear arch and baffle pier are flowed, flue gas is made to horizontally enter into gasification hearth, increases the radiating surface of waste and the flue gas disturbance of gasification hearth.
3. waste gasification melting furnace according to claim 1, it is characterised in that：The laminar flow inclination siege discharge end is set
Liquid slag height controller is set, the height controller includes baffle and the actuator for driving baffle flexible.
4. waste gasification melting furnace according to claim 1, it is characterised in that：The laminar flow channel side wall setting heating
Body carries out auxiliary heating and heat preservation.
5. waste gasification melting furnace according to claim 1, it is characterised in that：The grate is featured equipped with waste
Glassware, the waste promote mainly the lower section that glassware is located at feed hopper, for the waste in feed hopper to be pushed into gasification furnace, institute
It states and is equipped with windrow seal section between feed hopper, gasification furnace, base material material inlet, institute are set on the roof of the windrow seal section
Base material material inlet connection base material feeder is stated, the base material feeder is by base material through base material
Material inlet is pushed into windrow seal section.
6. waste gasification melting furnace according to claim 5, it is characterised in that：The moving hearth of the gasification furnace along into
Material direction is divided into dryer section, gasification section, and dryer section, the gasification section of the gasification furnace are respectively arranged below at least one and are independently arranged
An air compartment, wherein an air compartment below dryer section is air-supplied, and an air compartment below gasification section feeds mixing gasifying
Agent, the gasification furnace in arching upward shape, be respectively set on the face arch of the gasification furnace, rear arch it is secondary for air port, the gasification furnace
The first exhanst gas outlet is arranged in vault；
It further include steam exhaust fan, for blower, gasifying agent mixer, the arrival end of the steam exhaust fan passes through pipeline and water cooling
The steam (vapor) outlet of top of chamber connects, and the steam generated in the waterway injects the gasifying agent mixer by steam exhaust fan
An air inlet, the air inlet for blower is communicated with the atmosphere, and the gas outlet for blower connects the general pipeline of a manifold,
The branch pipe of the manifold respectively with an air compartment below gasifying agent mixer another air inlet, gasification furnace dryer section, gasification
The secondary of furnace is connected to for air port, what the gasifying agent mixer was provided for the steam of mixed vapour exhaust fan extraction and for blower
Air forms hybrid gasification agent, and the hybrid gasification agent feeds melting burner hearth from gasification agent inlet, and hybrid gasification agent is also used as gas
Change an air compartment below furnace First air infeed gasification furnace gasification section.
7. waste gasification melting furnace according to claim 6, it is characterised in that：The melting burner hearth is connect with gasification furnace
One end be the waste main-inlet for melting burner hearth, waste sub-inlet, the waste is arranged in the melting burner hearth side wall again
Sub-inlet connects waste pair material-pulling device, and waste pair material-pulling device is used to push away the residue of an air compartment each below gasification furnace
Enter to melt in burner hearth.
8. waste gasification melting furnace according to claim 6, it is characterised in that：The hybrid gasification agent mixed process produces
Raw condensed water inputs water-cooling system by pipeline, and the extra cooling water of the water seal slag removing system injects water cooling using back water pump
System circulation uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252449.2A CN106642138B (en) | 2016-12-30 | 2016-12-30 | waste gasification melting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611252449.2A CN106642138B (en) | 2016-12-30 | 2016-12-30 | waste gasification melting furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106642138A CN106642138A (en) | 2017-05-10 |
| CN106642138B true CN106642138B (en) | 2018-11-27 |
Family
ID=58836800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611252449.2A Active CN106642138B (en) | 2016-12-30 | 2016-12-30 | waste gasification melting furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106642138B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036334A (en) * | 2017-11-28 | 2018-05-15 | 中广核研究院有限公司 | Danger wastes method for innocent treatment and device |
| CN110274246A (en) * | 2019-05-24 | 2019-09-24 | 中广核环境科技(深圳)有限责任公司 | A kind of gasification burning melting all-in-one oven |
| CN115261080B (en) * | 2022-09-01 | 2023-10-20 | 西安热工研究院有限公司 | Three-section type solid waste city household garbage gasifier and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08303756A (en) * | 1995-05-02 | 1996-11-22 | Chubu Electric Power Co Inc | Melting and combustion device |
| JPH11230517A (en) * | 1998-02-18 | 1999-08-27 | Takuma Co Ltd | Combustion treatment apparatus for waste |
| JP2007248007A (en) * | 2006-03-17 | 2007-09-27 | Nippon Steel Engineering Co Ltd | Waste melting treatment device |
| CN101705114A (en) * | 2009-11-20 | 2010-05-12 | 昆明理工大学 | Method for preparing combustible gas by using rotary kiln to melt and gasify household garbage |
| CN105402736A (en) * | 2015-12-29 | 2016-03-16 | 重庆科技学院 | Double-layer mechanical grate type garbage gasification and incineration system and treatment method adopting same |
-
2016
- 2016-12-30 CN CN201611252449.2A patent/CN106642138B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08303756A (en) * | 1995-05-02 | 1996-11-22 | Chubu Electric Power Co Inc | Melting and combustion device |
| JPH11230517A (en) * | 1998-02-18 | 1999-08-27 | Takuma Co Ltd | Combustion treatment apparatus for waste |
| JP2007248007A (en) * | 2006-03-17 | 2007-09-27 | Nippon Steel Engineering Co Ltd | Waste melting treatment device |
| CN101705114A (en) * | 2009-11-20 | 2010-05-12 | 昆明理工大学 | Method for preparing combustible gas by using rotary kiln to melt and gasify household garbage |
| CN105402736A (en) * | 2015-12-29 | 2016-03-16 | 重庆科技学院 | Double-layer mechanical grate type garbage gasification and incineration system and treatment method adopting same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106642138A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106524175B (en) | Castoff fusing curing process system and method | |
| CN206338815U (en) | Rotary kiln, plasma melting stove combined type dangerous waste disposal device | |
| CN106524176B (en) | Waste gasification melt-combustion system | |
| CN106224036B (en) | A kind of refuse gasification combustion gas of multi-stage heat exchanger and steam turbine combined generating system | |
| CN106642138B (en) | waste gasification melting furnace | |
| CN106224972A (en) | The refuse gasification combustion gas of high-moisture gas recycling and steam turbine combined generating system | |
| CN102878569B (en) | High-temperature air combustion intensifying device and method applicable to low heating value mixed garbage | |
| CN206051959U (en) | A kind of Novel medical rubbish plasma gasification processing system | |
| CN106122977A (en) | CO2 recovery system based on refuse gasification combustion gas and steam turbine cogeneration | |
| CN205560766U (en) | Double -deck mechanical stoker formula waste gasification incineration boiler system | |
| CN106224035B (en) | Humid air turbine electricity generation system based on the recovery of refuse gasification synthesis gas | |
| CN205560763U (en) | Mechanical stoker formula rubbish list stove gasification incineration boiler system | |
| CN108019759A (en) | A kind of refuse disposal system and processing method | |
| CN105402738B (en) | Double-deck stoker fired grate formula refuse gasification incinerator and its double boiler system | |
| CN106765146A (en) | Secondary pollutant control system based on waste gasification melt-combustion | |
| CN208671010U (en) | Waste gasification melt-combustion system | |
| CN104976621A (en) | Household garbage pyrolysis gasifier | |
| CN106287642A (en) | Combustion gas based on refuse gasification and the coaxial combined generating system of steam turbine | |
| CN205560762U (en) | Mechanical stoker formula waste gasification incineration boiler system | |
| CN205560764U (en) | Mechanical stoker formula waste gasification burns dual -boiler system | |
| CN113751471B (en) | Multi-fuel coupled system and method for online melting treatment of hazardous waste incineration fly ash | |
| CN205560759U (en) | Mechanical stoker formula waste gasification burns dual -boiler power generation system | |
| CN107166400A (en) | House refuse integration heat treatment system and method | |
| CN105465792B (en) | The circulation air feed system of stoker fired grate formula refuse gasification incinerator | |
| CN105423307B (en) | Stoker fired grate formula refuse gasification incinerator and its steam generator system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230321 Address after: No. 3, Jianqiao Avenue, Jianqiao Industrial Park, Dadukou District, Chongqing 401325 Patentee after: Chongqing Sanfeng Environment Group Co.,Ltd. Patentee after: Chongqing University of Science & Technology Address before: No. 20, East Road, University City, Chongqing, Shapingba District, Chongqing Patentee before: Chongqing University of Science & Technology |