CN109185884A - Garbage derivatived fuel boiler high temperature combustion system - Google Patents
Garbage derivatived fuel boiler high temperature combustion system Download PDFInfo
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- CN109185884A CN109185884A CN201811099926.5A CN201811099926A CN109185884A CN 109185884 A CN109185884 A CN 109185884A CN 201811099926 A CN201811099926 A CN 201811099926A CN 109185884 A CN109185884 A CN 109185884A
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- Prior art keywords
- sand
- fuel
- fire grate
- high temperature
- layer
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 87
- 239000000446 fuel Substances 0.000 title claims abstract description 59
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 30
- 239000004576 sand Substances 0.000 claims abstract description 140
- 239000004744 fabric Substances 0.000 claims abstract description 79
- 239000002893 slag Substances 0.000 claims abstract description 28
- 238000012216 screening Methods 0.000 claims description 37
- 238000002309 gasification Methods 0.000 claims description 33
- 238000011068 loading method Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 18
- 239000003500 flue dust Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000002829 reductive effect Effects 0.000 abstract description 8
- 238000002679 ablation Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 55
- 239000007789 gas Substances 0.000 description 16
- 239000002956 ash Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 239000002957 persistent organic pollutant Substances 0.000 description 9
- 239000003245 coal Substances 0.000 description 8
- 241001282160 Percopsis transmontana Species 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000036961 partial effect Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 244000309464 bull Species 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000965 Duroplast Polymers 0.000 description 1
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 230000035935 pregnancy Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- -1 sandstone Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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
- F23G5/002—Incineration of waste; Incinerator constructions; Details, accessories or control therefor characterised by their grates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
-
- 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
-
- 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
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L5/00—Blast-producing apparatus before the fire
- F23L5/04—Blast-producing apparatus before the fire by induction of air for combustion, e.g. using steam jet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/106—Combustion in two or more stages with recirculation of unburned solid or gaseous matter into combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/105—Furnace arrangements with endless chain or travelling grate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/10—Waste feed arrangements using ram or pusher
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a kind of garbage derivatived fuel boiler high temperature combustion systems, including furnace body, burner hearth is equipped in the furnace body, the furnace body is equipped with slag outlet and exhanst gas outlet, the fire grate for stretching out the burner hearth setting is installed in the burner hearth, it is sequentially arranged uniform cloth sand device, fuel feeding device and gasified combustion apparatus along fire grate conveying direction above the fire grate outside the burner hearth, the uniform cloth sand device is connected with layer of sand cloth bucket；The present invention can increase layer of sand as bed course before charging on fire grate, on the one hand can play the role of being spaced ignition temperature, ablation of the high temperature in gasified combustion apparatus to fire grate is effectively reduced, on the other hand initial stage can be prevented to be fused into the fuel of liquid to fire grate gap leakage, improve fuel combustion utilization rate, it is therefore prevented that corrosion of the fuel to fire grate structure；The present invention has well solved problem of the existing technology, economic value and social value with higher.
Description
Technical field
The present invention relates to boiler technology field more particularly to a kind of garbage derivatived fuel boiler high temperature combustion systems.
Background technique
With the rapid raising of China's rapid development of economy and living standards of the people, domestic waste, industrial refuse
Equal yields sharply increase, caused by environmental pollution get worse.Processing rubbish achieves innoxious, recycling and decrement
Change, oneself becomes the significant problem that China must solve.
The maximum problem of garbage disposal is that its ingredient is heterogeneous and each ingredient properties differ greatly, as include in rubbish paper,
Timber, cloth, castoff of food and drink, rubber, plastics, metal, sandstone, glass etc., and because of the differences such as area and rubbish source, rubbish
The ratio of each ingredient is also not quite similar in rubbish.Multiple countries produce RDF (rubbish using combustable organic component in rubbish is extracted at present
Derivatived fuel) measure, RDF is used for the fields such as cement manufacture, Heat Supply Engineering and generation engineering, to realize the money of garbage disposal
Sourceization utilizes.
Inventor is dedicated to the research and application of incineration firing technology, has developed including rubbish is carried out magnetic separation, cutting, is washed in a pan
Wash flotation, cleaning, extrusion dehydration and etc. waste disposal method, wherein eluriate flotation step mainly utilize specific gravity different
Principle separates specific gravity in rubbish compared with the light and heavier ingredient of specific gravity, and the lighter ingredient of specific gravity is mainly above-mentioned combustable organic
Component, including paper, timber, cloth, rubber, plastics etc.；The heavier ingredient of specific gravity is mainly sand.Above-mentioned flammable organic component can
For producing RDF, inevitably there is organic pollutant (such as dioxin, polycyclic aromatic hydrocarbon and more chlorine in RDF in combustion
Biphenyl etc.) generation.Temperature (Temperature), residence time (Time) and turbulent (Turbulent) quilt are simultaneously known as " 3T ",
It is the key factor for inhibiting organic pollutant to generate in RDF combustion process, that is, combustion process is needed to guarantee sufficiently high temperature,
There are certain residence time in burning situation, organic pollutant can mix with air sufficiently organic pollutant.
Inventor, can be to fire grate structure in practice, it has been found that guarantee organic pollutant burning furnace combustion temperature totally
Cause very serious ablation, most of melt can occur first and be in a liquid state and lack for fire grate well damage, and when RDF burns
The phenomenon that part direct gasification, the fuel of liquid easily infiltrate into fire grate gap, are on the one hand difficult to be burned utilization again, on the other hand
Fuel easily corrodes fire grate structure, is further exacerbated by fire grate damage.And the ignition temperature in combustion furnace is reduced, RDF can not fire again
It burns down complete, it is difficult to avoid the generation of above-mentioned organic pollutant, above-mentioned contradictory problem, which becomes, promotes and applies RDF combustion technology
A great problem.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind to be effectively reduced furnace while guaranteeing furnace combustion temperature
Row's ablation and corrosion and the garbage derivatived fuel boiler high temperature combustion system for preventing liquid fuel from leaking.
In order to solve the above technical problems, the technical scheme is that garbage derivatived fuel boiler high temperature combustion system,
Including furnace body, burner hearth is equipped in the furnace body, the furnace body is equipped with slag outlet and exhanst gas outlet, is equipped in the burner hearth
The fire grate for stretching out the burner hearth setting, has been sequentially arranged above the fire grate outside the burner hearth along fire grate conveying direction
Even cloth sand device, fuel feeding device and gasified combustion apparatus, the uniform cloth sand device are connected with layer of sand cloth bucket.
The layer of sand cloth bucket is connected with placing sand screening circulation supply equipment and/or elutriation as a preferred technical solution,
Sand feedway.
The placing sand screening circulation supply equipment includes screening plant as a preferred technical solution, the screening plant
Feed end connect the slag outlet, the discharge end of the screening plant connects the layer of sand cloth bucket, the screening plant
It is connected with recrement output device.
The screening plant includes vibrating screen as a preferred technical solution, the vibrating screen be equipped with two layers of compass screen surface, two
The compass screen surface is in lateral V-arrangement arrangement, and the mesh number of compass screen surface described in upper layer is less than the mesh number of compass screen surface described in lower layer, compass screen surface described in upper layer
Feeding end connects the slag outlet, and the discharge end of compass screen surface described in lower layer connects the layer of sand cloth bucket.
The recrement output device includes the recrement output below compass screen surface described in lower layer as a preferred technical solution,
Belt, the recrement output belt stretch out the discharge end setting of compass screen surface described in upper layer.
The layer of sand cloth bucket is also connected with coal-fired feedway as a preferred technical solution,.
The uniform cloth sand device is connected with the fire grate as a preferred technical solution,.
The fuel feeding device includes the loading channel along fire grate conveying direction arrangement as a preferred technical solution,
It is equipped with the fuel cloth bucket connecting with the loading channel above the loading channel, it is closed in the loading channel to be slidably installed
There is expeller, the expeller is fixedly connected with several pusher connecting rods, the pusher far from one end of the gasified combustion apparatus
The outer end of connecting rod is connected with pusher connecting plate jointly, and the pusher connecting plate is connected with reciprocal material-pulling device；The charging is logical
It is equipped with bed course between road and the fire grate and passes through gap.
The exhanst gas outlet is connected with deduster as a preferred technical solution, the dust discharge end of the deduster with it is described
Flue dust back-burning device is connected between gasified combustion apparatus or the fuel feeding device.
The gasified combustion apparatus includes gasification, and combustion chamber as a preferred technical solution, is set on the gasification, and combustion chamber
Have and the corresponding bed course entrance of the uniform cloth sand device, charging entrance corresponding with the fuel feeding device and with the furnace
The corresponding flame slag-drip opening of thorax；The cavity wall of the gasification, and combustion chamber is equipped with heat insulation and heat control device, the chamber of the gasification, and combustion chamber
Top is equipped with the air lance of several directive fuel surfaces, and the chamber top that the air lance passes through the gasification, and combustion chamber is connected with
Air supply device；The lower end edge fuel conveying direction of the air lance gradually decreases.
By adopting the above-described technical solution, garbage derivatived fuel boiler high temperature combustion system, including furnace body, the furnace
It is equipped with burner hearth in vivo, the furnace body is equipped with slag outlet and exhanst gas outlet, and the stretching burner hearth is equipped in the burner hearth and is set
The fire grate set has been sequentially arranged uniform cloth sand device, combustion along fire grate conveying direction above the fire grate outside the burner hearth
Material feeding device and gasified combustion apparatus, the uniform cloth sand device are connected with layer of sand cloth bucket；The present invention can before charging
Increase layer of sand on fire grate as bed course, on the one hand can play the role of being spaced ignition temperature, be effectively reduced in gasified combustion apparatus
Ablation of the high temperature to fire grate, the fuel that initial stage on the other hand can be prevented to be fused into liquid improves fuel to fire grate gap leakage
Combustion utilization efficiency, it is therefore prevented that corrosion of the fuel to fire grate structure；The present invention has well solved problem of the existing technology, tool
There are higher economic value and social value.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the schematic cross-sectional view of the embodiment of the present invention one；
Fig. 2 is the left view enlarged structure schematic diagram in Fig. 1 at expeller and pusher connecting rod；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention two；
Fig. 4 is the enlarged diagram of placing sand screening circulation supply equipment in the A-A structure of Fig. 3；
Fig. 5 is the structural schematic diagram of the embodiment of the present invention three.
In figure: 1- furnace body；11- burner hearth；12- exhanst gas outlet；13- scraper slagging machine；14- slag outlet；2- fire grate；3- gas
Change burner；31- gasification, and combustion chamber；32- cooling jacket；33- air lance；34- cloth wind chamber；4- fuel feeding device；40-
Fuel cloth bucket；41- loading channel；42- expeller；43- pusher connecting rod；44- pusher connecting plate；The reciprocal bull stick of 45-；46- is past
Physical pendulum bar；The uniform cloth sand device of 5-；50- layer of sand cloth bucket；6- placing sand sieves circulation supply equipment；61- screening plant；611- vibration
Dynamic sieve；612- compass screen surface；613- recrement exports belt；62- screens conveyer；63- loopback conveyer；7- deduster.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes certain exemplary embodiments of the invention.Undoubtedly, those skilled in the art will recognize,
In the case where without departing from the spirit and scope of the present invention, described embodiment can be repaired with a variety of different modes
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
Embodiment one: as depicted in figs. 1 and 2, garbage derivatived fuel boiler high temperature combustion system, including furnace body 1, it is described
Burner hearth 11 is equipped in furnace body 1, the furnace body 1 is equipped with slag outlet 14 and exhanst gas outlet 12, is equipped with and stretches in the burner hearth 11
The fire grate 2 that the burner hearth 11 is arranged out.Scraper plate corresponding with the slag output end of the fire grate 2 is equipped with before certain slag outlet 14
Mucking machine 13, the exhanst gas outlet 12 connect exhaust gas processing device.The slag outlet 14, described is scraped the exhanst gas outlet 12
The well-known technique that plate mucking machine 13 and the exhaust gas processing device are well known to those skilled in the art, details are not described herein.
Uniform cloth sand device has been sequentially arranged along 2 conveying direction of fire grate above the fire grate 2 outside the burner hearth 11
5, fuel feeding device 4 and gasified combustion apparatus 3, the uniform cloth sand device 5 are connected with layer of sand cloth bucket 50.
The gasified combustion apparatus 3 includes gasification, and combustion chamber 31, and the gasification, and combustion chamber 31 is equipped with and the uniform cloth
The corresponding bed course entrance of the sand device 5 and corresponding charging entrance of the fuel feeding device 4 and spray corresponding with the burner hearth 11
Fire row cinder notch.The cavity wall of the gasification, and combustion chamber 31 is equipped with heat insulation and heat control device, and heat insulation and heat control device described in the present embodiment is
Cooling jacket 32 in 31 cavity wall of gasification, and combustion chamber is set, and the cooling jacket 32 can will be in the gasification, and combustion chamber 31
The heat progress that burning generates is initial to be absorbed and utilized, and can prevent the high temperature in the gasification, and combustion chamber 31 to cavity wall simultaneously
Ablation, the cooling jacket 32 connect circulating pump etc., what the circulating pump was well known to those skilled in the art, no longer superfluous herein
It states and is being not shown in the figure.Certain heat insulation and heat control device can also be to be fixed in the cavity wall of the gasification, and combustion chamber 31
Flame retardant coating.The chamber top of the gasification, and combustion chamber 31 is equipped with the air lance 33 of several directive fuel surfaces, the air spray
The chamber top that pipe 33 passes through the gasification, and combustion chamber 31 is connected with air supply device.The air supply device includes being arranged in the gasification combustion
The cloth wind chamber 34 outside the chamber top of chamber 31 is burnt, the cloth wind chamber 34 is connected with blower, and the blower is well-known technique, no longer superfluous herein
It states and is being not shown in the figure.The lower end edge fuel conveying direction of the air lance 33 gradually decreases.
The working principle of the gasified combustion apparatus 3 are as follows: combustible material is added to the fire grate by the fuel feeding device 4
After on 2, combustible material burns since surface layer, and the air lance 33 makes the combustion on surface to combustible material surface forced air supply
Layer oxygen-enriched combusting is burnt, a large amount of heat is generated and is blown to the internal layer of combustible material, the combustible material of internal layer is thermally decomposed, melted
Change the raw fuel gas of not stopping pregnancy, just includes dioxin, polycyclic aromatic hydrocarbon and Polychlorinated biphenyls etc. in fuel gas, fuel gas is by institute
It states fire grate 2 described in the wind band trend of air lance 33 to move, by the rebound of the fire grate 2, passes through combustible material surface layer again,
Fuel gas is further cracked in the process, and cracked gas can not escape, under the abundant oxygen supply of the air lance 33
Burning rapidly, above-mentioned entire combustion process generate higher temperature, and at these elevated temperatures, all macromolecular functional groups continue to crack
And burn, all pernicious gases such as dioxin is completely broken down, with the conveying of the fire grate 2, combustible material is constantly to institute
The movement of 11 direction of burner hearth is stated, material constantly burns until becoming the ashes of the carbon containing small part and falling from the slag output end of the fire grate 2
It is discharged on to the scraper slagging machine 13, the flame of high temperature is sprayed from the flame slag-drip opening, and benefit is carried out in the burner hearth 11
With.Can be seen that from those skilled in the art in above-mentioned principle can form ideal can decompose in the gasified combustion apparatus 3
The high temperature of organic pollutant, and because of the principle of downward air feed, organic pollutant residence time in burning situation is longer and can
It mixes well with air, so organic pollutant can be sufficiently burned in the gasified combustion apparatus 3, burning tail is greatly reduced
The content of harmful substance in gas, gasified combustion apparatus 3 described in the present embodiment can be carried out effectively for RDF and other combustable organic objects
Burning utilizes.
Sand in layer of sand cloth bucket 50 described in the present embodiment is will to eluriate separating step elutriation by eluriating sand feedway
Sand supply out, the elutriation sand feedway can be screw conveyor, or belt conveyor etc., it is described to wash in a pan
Washed-out sand feedway is well known to those skilled in the art, and details are not described herein and is being not shown in the figure.Certain the present embodiment
Sand in the layer of sand cloth bucket 50 can also be the addition of artificial or other sand loading machinery.
The uniform cloth sand device 5 includes that two lateral rotations are mounted on cloth sand roller fire grate 2 top and rotated towards each other,
It is circumferentially uniformly provided with several band sand plates in the cloth sand roller, is equipped with cloth sand shield at the lower port of the layer of sand cloth bucket 50.
At sand free accumulation to the two cloth sand rollers in the layer of sand cloth bucket 50, the cloth sand roller rotation, the band sand strip is moved
Sand rotation, and after turning an angle, sand is because self weight is gradually poured down from the end with sand plate, in the fire grate 2
One layer of bed course of upper formation, when the cloth sand roller does not rotate, the band sand plate in the two cloth sand rollers can be to the layer of sand cloth
Sand in hopper 50 plays the role of leakproof.What the uniform cloth sand device 5 was well known to those skilled in the art, structure and original
Details are not described herein for reason.The uniform cloth sand device 5 is connected with the fire grate 2, i.e., the described cloth sand roller and the fire grate 2
It can be with using transmission connection, the uniform cloth sand devices 5 described in this way such as gear drive, chain conveyer or belt transmissions between power end
With the synchronous speed for realizing cloth of the conveying speed of the fire grate 2, make the bed course being arranged on the fire grate 2 more evenly.
The fuel feeding device 4 includes the loading channel 41 along 2 conveying direction of fire grate arrangement, and the loading channel 41 connects
Connect the charging entrance.The fuel cloth bucket 40 connecting with the loading channel 41 is equipped with above the loading channel 41, it is described
Closed in loading channel 41 to be slidably fitted with expeller 42, the one end of the expeller 42 far from the gasified combustion apparatus 3 is solid
Surely several pusher connecting rods 43 are connected with, the outer end of the pusher connecting rod 43 is connected with pusher connecting plate 44 jointly.The present embodiment
The uniform cloth sand device 5 is located at 41 oblique upper of loading channel, so the pusher connecting rod 43 is across the uniform cloth
5 lower section of sand device, knockout gap is formed between the pusher connecting rod 43, is guaranteed that sand can normally be fallen on the fire grate 2 and is formed
Bed course.Bed course is equipped between the loading channel 41 and the fire grate 2 by gap, the bed course connects the pad by gap
Layer entrance.Certain uniform cloth sand device 5 may also be arranged on 41 obliquely downward of loading channel, and the pusher connecting rod 43 passes through
Above the uniform cloth sand device 5, knockout gap is also formed between the pusher connecting rod 43, knockout gap described herein guarantees sand
It can normally be fallen in the layer of sand cloth bucket 50 in the uniform cloth sand device 5.
The pusher connecting plate 44 is connected with reciprocal material-pulling device.The reciprocal material-pulling device includes what lateral rotation was installed
Reciprocating drive shaft, it is radially fixed on the reciprocating drive shaft to be connected with reciprocal bull stick 45, the end of the reciprocal bull stick 45 and institute
It states and is connected with reciprocal swing rod 46 between pusher connecting plate 44.The reciprocating drive shaft can also be driven with the power end of the fire grate 2
Connection.Certain reciprocal material-pulling device can also be the structure for including reciprocal drive cylinder, and the reciprocal drive cylinder connection is changed
To solenoid valve.
The working principle of the present embodiment are as follows: provide elutriation by the elutriation sand feedway in the layer of sand cloth bucket 50
The sand filtered out.Sand is uniformly laid on the fire grate 2 through the uniform cloth sand device 5 and forms bed course, and bed course is with the fire grate 2
It is reached in the gasification, and combustion chamber 31 through the bed course by gap；Combustible material, it is as organic in filtered out in RDF or rubbish
Combustible component etc. is sent into the gasification, and combustion chamber 31 by the fuel feeding device 4 and is present on bed course, and combustible material exists
Full combustion in the gasification, and combustion chamber 31, the theory of combustion have been illustrated before, and details are not described herein.Combustible material exists
Stopped when being fused into liquid in combustion process by bed course, be not easy to penetrate into the fire grate 2, and by high temperature and filled under the blocking of bed course
The effect of sufficient oxygen is sufficiently vaporized burning.The bed course of lime-ash and its underpart after burning falls into the scraper slagging machine jointly
13 send out, and submitting is the sand slag mixture that tailings and lime-ash are formed.Sand slag mixture is through described in scraper slag removing machine submitting
It is sent after slag outlet 14 to other processing equipments and is handled.In above process, the sand filtered out is eluriated to fire in the gasification
At a high temperature of burning chamber 31, the organic matter adhered on sand grains is also sufficiently pyrolyzed and is burnt, and reduces the intensity of subsequent sand cleaning, and same
When sterilization functions are played to sand, the processing difficulty of sewage after cleaning sand can be reduced, killed two birds with one stone.
On the one hand the present embodiment can play interval ignition temperature using layer of sand is increased on the fire grate 2 as bed course
Effect, is effectively reduced ablation of the high temperature to the fire grate 2 in the gasified combustion apparatus 3, and initial stage on the other hand can be prevented molten
The fuel of liquid is melted into the gap leakage of the fire grate 2, improves fuel combustion utilization rate, it is therefore prevented that fuel is to 2 structure of fire grate
Corrosion.The present embodiment is applicable to RDF and the burning of other combustable organic objects utilizes, and has very high economic value and society
It can be worth.
Layer of sand cloth bucket 50 described in the present embodiment is also connected with coal-fired feedway, and the fire coal feedway can be skin
Band conveyer, or drag conveyor.After the fire coal feedway is opened, it can be synchronized in the layer of sand cloth bucket 50
Storage is a large amount of coal-fired, and fire coal forms the mixing of coal sand under the action of uniform cloth sand device 5 together with sand on the fire grate 2
Bed course.Because there may be blocky combustible or combustible material itself the moisture contents such as such as duroplasts, onal band in combustible material
It is more, so quickly forming high-temp combustion environment, the present embodiment for the ignition temperature in gasification, and combustion chamber 31 described in fast lifting
It will be first laid on the fire grate 2 containing a large amount of coal-fired coal sand bedding courses, be utilized using the coal-fired feedway at the beginning of burning
Fire coal reaches combustion-supporting effect, has further widened the applicable surface of the present embodiment in this way.The fire coal feedway is this field skill
Known to art personnel, therefore it is being not shown in the figure.
Embodiment two: as shown in Figure 3 and Figure 4, the present embodiment and embodiment one the difference is that: the layer of sand cloth
Bucket 50 is connected with placing sand screening circulation supply equipment 6, and placing sand described in the present embodiment is sand, fire coal and biomass on the fire grate 2
The clinker generated after equal compounding substances burning.The placing sand screening circulation supply equipment 6 includes screening plant 61, the screening dress
The feed end for setting 61 connects the slag outlet 14, and the discharge end of the screening plant 61 connects the layer of sand cloth bucket 50, institute
It states screening plant 61 and is connected with recrement output device.The present embodiment signal is using the screening conveyer 62 that is obliquely installed by the furnace
The sand slag mixture of 14 discharge of slag outlet is transported to the feed end of the screening plant 61, is mentioned by loopback conveyer 63 and loopback
The available sand that the discharge end of the screening plant 61 sifts out is recycled to the layer of sand cloth bucket 50 and recycled by the machine of liter.When
The right screening plant 61 can also be placed directly at the slag outlet 14, i.e., the sand slag mixture that the described slag outlet 14 is discharged
The feed end of the screening plant 61 is directly fallen in, it then can by what is sifted out by the loopback conveyer 63 and loopback elevator
It is recycled with sand loopback.
The screening plant 61 includes vibrating screen 611, and the vibrating screen 611 is equipped with two layers of compass screen surface 612, two compass screen surfaces
612 arrange in lateral V-arrangement, and the mesh number of compass screen surface 612 described in upper layer is less than the mesh number of compass screen surface 612 described in lower layer, compass screen surface described in upper layer
612 feeding end connects the slag outlet 14 by the screening conveyer 62, and the discharge end of compass screen surface 612 described in lower layer passes through
The loopback conveyer 63 connects the layer of sand cloth bucket 50 with loopback elevator.Because the sand being routed on the fire grate 2 is wanted
Play the role of heat-insulated and prevents leakage two, so needing to screen out the biggish particle of partial size prevents layer of sand bed course gap larger,
The lesser lime-ash of partial size or fine sand, which are screened out, prevents layer of sand bed course itself from leaking into 2 gap of fire grate, so this implementation
Compass screen surface 612 described in example upper layer is for screening out the biggish particle of partial size, and mesh number is 8~14, and the small particle of partial size drops down onto lower layer
On the compass screen surface 612, compass screen surface 612 described in lower layer is 20~60 for screening out the smaller lime-ash of partial size, mesh number, will be available
It is transmitted back in the layer of sand cloth bucket 50 after sand grains screening.The present embodiment, which is shown on the same vibrating screen 611, is arranged two
The compass screen surface 612, certain screening plant 61 can also be two about 611 vibrating screens arrangements, the compass screen surface of two vibrating screens 611
612 also can also be used rotary screen etc. in lateral V-arrangement arrangement or the screening plant 61.
The vibrating screen 611 is connected with recrement output device, and the recrement output device includes being located at compass screen surface described in lower layer
The recrement of 612 lower sections exports belt 613, and the recrement output belt 613 stretches out the discharge end setting of compass screen surface 612 described in upper layer,
The biggish sand of partial size under the sieve of compass screen surface 612 described in lime-ash and the lesser sand grains of partial size, upper layer under the sieve of compass screen surface 612 described in lower layer
The substance of grain or other such as metals, glass is all dropped down onto and is exported on the recrement output belt 613.The present embodiment illustrates institute
It states recrement output belt 613 to be located at below 63 feed end of loopback conveyer, when the shutdown of loopback conveyer 63 or the vibrating screen
When the 611 available sand quantity sifted out are larger, the sand sifted out can be overflowed from the feed inlet of loopback conveyer 63, be exported by the recrement
Belt 613 is delivered to other equipment or place together.
The working principle of the present embodiment are as follows: be initially in the layer of sand cloth bucket 50 and fed by artificial or sand loading is mechanical etc.
Sand, sand are uniformly laid on the fire grate 2 through the uniform cloth sand device 5 and form bed course, and bed course is with the fire grate 2 through the pad
Layer is reached in the gasification, and combustion chamber 31 by gap；Combustible material is sent into the gasification, and combustion by the fuel feeding device 4
Chamber 31 is simultaneously present on bed course, combustible material full combustion in the gasification, and combustion chamber 31.Combustible material is in combustion process
In stopped when being fused into liquid by bed course, be not easy to penetrate into the fire grate 2, and by high temperature and sufficient oxygen under the blocking of bed course
Effect, is sufficiently vaporized burning.The bed course of lime-ash and its underpart after burning falls into the scraper slagging machine 13 jointly and sends out, and send
It is out the sand slag mixture that tailings and lime-ash are formed.The sand slag mixture is sieved through placing sand screening circulation supply equipment 6
After choosing, available sand is sent into the layer of sand cloth bucket 50 and is recycled, the bulky grain that the vibrating screen 611 sifts out
Solids and lime-ash are sent out by recrement output belt 613.
The present embodiment recycles sand, reduces the cost in addition purchasing sand, and the sand recycled is after screening, grain
More preferably, heat-insulated and antiseep effect is more preferable for degree.
Because of the presence of the screening plant 61, the missing of the total amount of having of the sand of circulation, so the present embodiment can also make institute
It states the connection of layer of sand cloth bucket 50 and eluriates sand feedway, the elutriation sand feedway also can be used as artificial, sand loading machinery etc. and mend
The source except sand as sand is filled, it is certainly described to eluriate sand feedway for next sand also by high temperature degerming.Described in the present embodiment
Layer of sand cloth bucket 50 can also connect coal-fired feedway, combustion-supporting to play the role of at the beginning to the fuel for being not easy to ignite.
Embodiment three: as shown in figure 5, the present embodiment and embodiment two the difference is that: the exhanst gas outlet 12 connects
It is connected to deduster 7, is connected between the dust discharge end of the deduster 7 and the gasified combustion apparatus 3 or the fuel feeding device 4
It is connected to flue dust back-burning device.The exhaust end of the deduster 7 connects the exhaust gas processing device.The flue dust back-burning device includes
Spiral transferring dirt machine.Because when incineration firing, there may be part metals in sand, metal switchs to gaseous state at high temperature, partially in institute
State on the wall of burner hearth 11 cooling condensation, be partially discharged with flue gas, at the same in the floating ash for generation of burning also containing a small amount of carbon and its
His solid matter, metal cooling in deduster 7 are mixed with flue dust.Flue dust mixture can be returned to institute by the flue dust back-burning device
It states gasification, and combustion chamber 31 to be rekindled, a small amount of carbon is completely burned off, other solids can have part and sand slag mixture one
It rises and carries out subsequent processing.The treatment process of flue dust, and smoke dust secondary burning can be not only reduced in this way, more reduce energy waste
It is remained with harmful substance.Certain exhanst gas outlet 12 can also be directly connected to blower, and pass through the cloth wind chamber 34 by blower
Flue dust is directly sprayed into the gasification, and combustion chamber 31 by the air duct.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. garbage derivatived fuel boiler high temperature combustion system, including furnace body, the furnace body is interior to be equipped with burner hearth, set on the furnace body
There are slag outlet and exhanst gas outlet, the fire grate for stretching out the burner hearth setting is installed, it is characterised in that: be located at institute in the burner hearth
It states and has been sequentially arranged uniform cloth sand device, fuel feeding device and gasification along fire grate conveying direction above the fire grate outside burner hearth
Burner, the uniform cloth sand device are connected with layer of sand cloth bucket.
2. garbage derivatived fuel as described in claim 1 boiler high temperature combustion system, it is characterised in that: the layer of sand cloth
Bucket is connected with placing sand screening circulation supply equipment and/or eluriates sand feedway.
3. garbage derivatived fuel as claimed in claim 2 boiler high temperature combustion system, it is characterised in that: the placing sand screening
Circulation supply equipment includes screening plant, and the feed end of the screening plant connects the slag outlet, the screening plant
Discharge end connects the layer of sand cloth bucket, and the screening plant is connected with recrement output device.
4. garbage derivatived fuel as claimed in claim 3 boiler high temperature combustion system, it is characterised in that: the screening plant
Including vibrating screen, the vibrating screen is equipped with two layers of compass screen surface, and two compass screen surfaces are in lateral V-arrangement arrangement, the mesh of compass screen surface described in upper layer
Number is less than the mesh number of compass screen surface described in lower layer, and the feeding end of compass screen surface described in upper layer connects the slag outlet, compass screen surface described in lower layer
Discharge end connects the layer of sand cloth bucket.
5. garbage derivatived fuel as claimed in claim 4 boiler high temperature combustion system, it is characterised in that: the recrement output
Device includes the recrement output belt below compass screen surface described in lower layer, and the recrement output belt stretches out compass screen surface described in upper layer
Discharge end setting.
6. garbage derivatived fuel as claimed in claim 2 boiler high temperature combustion system, it is characterised in that: the layer of sand cloth
Bucket is also connected with coal-fired feedway.
7. garbage derivatived fuel as described in claim 1 boiler high temperature combustion system, it is characterised in that: the uniform cloth sand
Device is connected with the fire grate.
8. garbage derivatived fuel as described in claim 1 boiler high temperature combustion system, it is characterised in that: the fuel charging
Device includes the loading channel along fire grate conveying direction arrangement, is equipped with above the loading channel and connect with the loading channel
Fuel cloth bucket, closed in the loading channel to be slidably fitted with expeller, the expeller is far from the gasified combustion apparatus
One end be fixedly connected with several pusher connecting rods, the outer end of the pusher connecting rod is connected with pusher connecting plate jointly, described to push away
Material connecting plate is connected with reciprocal material-pulling device；It is equipped with bed course between the loading channel and the fire grate and passes through gap.
9. garbage derivatived fuel as described in claim 1 boiler high temperature combustion system, it is characterised in that: the exhanst gas outlet
It is connected with deduster, is connected between the dust discharge end of the deduster and the gasified combustion apparatus or the fuel feeding device
There is flue dust back-burning device.
10. the garbage derivatived fuel boiler high temperature combustion system as described in claim 1 to 9 any claim, feature
Be: the gasified combustion apparatus includes gasification, and combustion chamber, and the gasification, and combustion chamber is equipped with and the uniform cloth sand device pair
The corresponding charging entrance of bed course entrance and the fuel feeding device answered and flame slag-drip opening corresponding with the burner hearth；Institute
The cavity wall for stating gasification, and combustion chamber is equipped with heat insulation and heat control device, and the chamber top of the gasification, and combustion chamber is equipped with several directive fuel quantity ga(u)ges
The air lance in face, the chamber top that the air lance passes through the gasification, and combustion chamber are connected with air supply device；The air lance
Lower end edge fuel conveying direction gradually decrease.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099926.5A CN109185884B (en) | 2018-09-20 | 2018-09-20 | High-temperature combustion system of boiler for refuse derived fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811099926.5A CN109185884B (en) | 2018-09-20 | 2018-09-20 | High-temperature combustion system of boiler for refuse derived fuel |
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| CN109185884A true CN109185884A (en) | 2019-01-11 |
| CN109185884B CN109185884B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2021076328A (en) * | 2019-11-12 | 2021-05-20 | 株式会社Ihi | Clinker treatment system and clinker treatment method |
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| JP2021076328A (en) * | 2019-11-12 | 2021-05-20 | 株式会社Ihi | Clinker treatment system and clinker treatment method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109185884B (en) | 2024-04-09 |
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