CN108224437A - A kind of rotary kiln incinerator and its operation method - Google Patents
A kind of rotary kiln incinerator and its operation method Download PDFInfo
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- CN108224437A CN108224437A CN201810350390.3A CN201810350390A CN108224437A CN 108224437 A CN108224437 A CN 108224437A CN 201810350390 A CN201810350390 A CN 201810350390A CN 108224437 A CN108224437 A CN 108224437A
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- rotary kiln
- combustion chamber
- fuel
- gas
- fire grate
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 100
- 238000002309 gasification Methods 0.000 claims abstract description 75
- 239000007789 gas Substances 0.000 claims abstract description 58
- 239000000446 fuel Substances 0.000 claims abstract description 53
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000002893 slag Substances 0.000 claims abstract description 18
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003546 flue gas Substances 0.000 claims abstract description 4
- 230000008676 import Effects 0.000 claims abstract description 4
- 239000002737 fuel gas Substances 0.000 claims description 30
- 239000008246 gaseous mixture Substances 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000000567 combustion gas Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 2
- 238000003756 stirring Methods 0.000 claims 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 230000011218 segmentation Effects 0.000 abstract description 2
- 239000010813 municipal solid waste Substances 0.000 description 11
- 239000002699 waste material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004056 waste incineration Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 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 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Classifications
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- 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
- F23G5/08—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
- F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
-
- 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
- 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
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/103—Combustion in two or more stages in separate chambers
Abstract
The invention discloses a kind of rotary kiln incinerator and its operation methods.Incinerator includes hopper, rotary kiln, the first combustion chamber, the second combustion chamber and secondary furnace, and hopper is arranged on rotary kiln front end, and rotary kiln front end is also associated with gasification gas channel, and gasification gas channel is connected with the second combustion chamber import.First combustion chamber is arranged on rotary kiln end, and the side that the first combustion chamber is located at turn around below kiln is provided with the fire grate of inclination arrangement, and fire grate is set with rotary kiln in staged.Fire grate bottom is provided with an air compartment for being passed through gasifying agent.First bottom of combustion chamber shrinks to form slag channel, and fire grate end is connected with slag channel.Second combustion chamber is arranged with secondary furnace horizontal alignment and its bottom is provided with cigarette wind channel and connects；After-flame air holes is provided in sidewall slope arrangement of first combustion chamber far from rotary kiln and side wall and after-flame air holes is set towards fire grate.Classification gasification of the present invention, fractional combustion and segmentation after-flame, have many advantages, such as fuel tolerance extensively and flue gas initial ejection are good.
Description
Technical field
The present invention relates to a kind of rotary kiln incinerator and its operation method, the refuse gasification for belonging to field of environment protection burns
Subdomains.
Background technology
With the expansion of urbanization process and scale, urban population increase, the opening in market, the change of residents consumption pattern
And the development of tourist industry, the yield and accumulating amount of municipal refuse increase year by year, 2005, the house refuse in China was cleared
1.56 hundred million tons are measured, and the house refuse amount of clearing in 2016 has reached 2.04 hundred million tons.The rate of rise of refuse collection amount is much larger than pre-
Phase.
Waste incineration is solid waste reducing, a kind of recycling/innoxious most preferred approach.For waste incineration
The type of furnace have grate furnace, rotary kiln, recirculating fluidized bed, pyrolysis oven etc..The exploitation of China's garbage incineration technology starts from 20th century 90
At the beginning of age, in Incineration in CFB field, by years of researches, very big achievement, domestic many R＆D institutions have been obtained
It is proposed the circulating fluid bed garbage technology for representing respective technical characteristic.The characteristics of for current domestic crude waste and
Technical barrier existing in terms of domestic and international waste incineration, state inside and outside are all actively carrying on technical development.Layer combustion and fluidized bed combustion
It is two kinds of main waste incineration modes, compared with fluidization, Grate-firing is more ripe, to the pre-processing requirements of rubbish
Low, the lime-ash burn decrement rate after burning is high, more demanding to the calorific value of rubbish；And fluidization exploitation is later, to the pre- of rubbish
Processing and deslagging requirement are high, and the clinker ignition loss of lime-ash is low, and high combustion efficiency, suitability of fuel is strong, and environmental pollution is small.It is more important
, high-moisture, waste of low heating value to China, if Grate-firing is not thrown, oil is combustion-supporting, and disposal of pollutants is very high, if oil is thrown
Operating cost is quite high, less economical.
Exploitation is suitble to the incineration technology of China's municipal refuse high-moisture, low heat value feature to be further genralrlization burning method and make
Its more environmentally friendly important measures.In this process, rubbish predrying adds the method for burning to be undoubtedly a kind of solution, and gas
Change moisture and a kind of selection scheme that burning is utilized in rubbish.
Invention content
The purpose of the present invention is to provide a kind of rotary kiln incinerator and its operation methods, using classification gasification, divide
Grade burning, the fuel such as the method for segmentation after-flame, the processing rubbish of recycling, it is especially suitable suitable for house refuse or industrial refuse
For high-moisture rubbish.
The present invention is achieved through the following technical solutions：
A kind of rotary kiln incinerator, the incinerator include hopper, rotary kiln, the first combustion chamber, the second combustion chamber and combustion
Room to the greatest extent, the hopper are arranged on the front end of the rotary kiln, and the rotary kiln front end is also associated with gasification gas channel, the gasification
Gas channel is connected between rotary kiln front end and second combustion chamber import；First combustion chamber is arranged on the rotary kiln
End, connect equipped with connector with the rotary kiln at the upper side of first combustion chamber, first combustion chamber is positioned at company
Side below interface is provided with the fire grate of inclination arrangement, and the fire grate is set with the rotary kiln in staged；The fire grate
Bottom is provided with an air compartment for being passed through gasifying agent；First bottom of combustion chamber shrinks to form slag channel, the fire grate
End is connected with the slag channel, and the slag channel bottom end is provided with water sealed tank；Second combustion chamber and the after-flame
Room horizontal alignment arrangement and its bottom are provided with cigarette wind channel and connect；.
After-flame air holes use is provided on first combustion chamber sidewall slope arrangement opposite with the connector and side wall
In penetrating air, and the after-flame air holes is set towards the fire grate so that by the air that after-flame air holes sprays into described in
Fire grate sprays.
The after-flame air holes sets several along the first combustion chamber side wall opposite with the connector, and it is described several
After-flame air holes is set towards the fire grate so that is sprayed by the air that after-flame air holes sprays into towards the fire grate.
Second combustion chamber and secondary furnace bottom opposite tilt arrange to form ash dropping hopper, and the ash dropping hopper bottom is set
Put ash tube.
Material-pulling device is provided with below the hopper, the material-pulling device is done back and forth along the rotary kiln central axis direction
Movement.
Second top of combustion chamber is provided with overfiren air port.
A kind of startup operation method of rotary kiln incinerator, the method includes：
Moisture content fuel is fed into rotary kiln from hopper, is slowly stirred and is transported to back by rotary kiln front end with the rotation of rotary kiln
Rotary kiln end is fallen to by connector on the fire grate of the first combustion chamber；Gasifying agent and point are passed through from an air compartment of fire grate bottom
Fire fuel so that gasification reaction generation gasification gas occurs for the fuel on fire grate, and part of fuel and/or residue after gasifying further burn
Generate combustion product gases and lime-ash；Gasification gas and combustion gas converge to the first combustion chamber top as gaseous mixture, and gaseous mixture is from connection
Mouth provides heat against fuel flowing into rotary kiln for fuel；
The partial gasification agent being passed through from an air compartment enters rotary kiln also by connector, utilizes the first combustion chamber gaseous mixture heat source
The heat of offer so that gasification reaction generation gasification gas occurs for the fuel in rotary kiln；The gas that gasifies becomes combustion together with gaseous mixture
Expect gas, the fuel gas that carry ash content enters the second combustion chambers burn by the gasification gas channel of rotary kiln front end；
The cigarette wind channel Zigzag type of fuel gas from the second combustion chamber and secondary furnace bottom of burning is made to enter secondary furnace burning completely,
And the ash content that fuel gas carries is caused to deposit to the second combustion chamber and secondary furnace bottom when fuel gas turns back flowing；
The lime-ash after burning is made to fall into slag channel from fire grate end, is cooled down in water sealed tank.
A kind of operation method of rotary kiln incinerator uses a kind of above-mentioned rotary kiln incinerator, the side
Method includes：
Moisture content fuel is fed into rotary kiln from hopper；
Make during rotation of the fuel with rotary kiln slowly stirred by rotary kiln front end and be transported to rotary kiln end, from returning
Rotary kiln end enters and the gasification gas of backfire stream and row, gasifying agent and the heating of combustion gas gaseous mixture under and mixed flue gas in
Gasification reaction generation gasification gas occurs for gasifying agent；The gasification gas of fuel gasification reaction generation is mixed into combustion with remaining gaseous mixture
Expect gas；The fuel gas that carry ash content enters the second combustion chamber by the gasification gas channel of rotary kiln front end；
Make fuel gas in the second combustion chambers burn, and the cigarette wind channel Zigzag type from the second combustion chamber and secondary furnace bottom enters combustion
Room burning to the greatest extent is complete；When fuel gas is turned back into secondary furnace, the ash content that fuel gas carries deposits to second under inertia force effect
Combustion chamber and secondary furnace bottom；
Make after gasification be not gasified totally fuel and residue after gasifying passes through connector and falls on the fire grate of the first combustion chamber；
Gasifying agent is passed through from an air compartment of fire grate bottom so that gasified reverse further occurs for the fuel that is not gasified totally on fire grate
Gasification gas and residue after gasifying should be generated, and the generation of residue after gasifying oxidizing fire is caused to carry the combustion gas of heat；Gasify gas and
The gaseous mixture of combustion gas converges to the first combustion chamber top, and enters rotary kiln from connector and provide heat for fuel against fuel flowing
Amount；
The partial gasification agent being passed through from an air compartment is also mixed with gaseous mixture enters rotary kiln by connector；
The lime-ash after burning is made to fall into slag channel from fire grate end, is cooled down in water sealed tank.
When in the rotary kiln by heating gasification reaction occurs for moisture content fuel, the moisture in fuel is precipitated by heating to be made
For gasifying agent.
One or more mixtures of the fuel including house refuse, industrial refuse.
The present invention has the following advantages and beneficial effects：By the way of after-combustion of first gasifying, rotary kiln burning is reduced
Calorific intensity, do not require completely burned off in rotary kiln, the scope of application of rubbish can be greatly expanded, it might even be possible to burning part
The industrial refuse of high heating value, such as waste plastics, waste sludge from paper mill；Burning is divided into two parts, first, gasification product fuel gas
Space combustion, ignition temperature can be improved（1000 °C of dangerous waste standard can be reached）, the discharge of dioxin is further reduced,
Being passed through air in the end of burn-out grate simultaneously makes the abundant after-flame of residue, and the heat for generation of burning is again the drying of front, is pyrolyzed
Heat is provided with gasification；The burning of the double classifications of Fuel-air under the conditions of rotary kiln-fire grate is realized, can extended
Initial ejection is substantially improved while rubbish use scope.
Description of the drawings
Fig. 1 is the rotary kiln incinerator schematic diagram of one of which embodiment involved in the present invention.
In figure：1- hoppers；2- rotary kilns；The first combustion chambers of 3-；4- fire grates；Air compartment of 5-；6- gasification gas leads to
Road；7- after-flame air holes；8- material-pulling devices；The second combustion chambers of 9-；10- secondary furnaces；11- overfiren air ports；12- water sealed tanks；
13- ash dropping hoppers；14- ash tubes.
Specific embodiment
The specific embodiment and the course of work of the present invention are further described below in conjunction with the accompanying drawings.
The orientation such as upper, lower, left, right, front and rear in present specification term be based on position relationship shown in the drawings and
It establishes.Attached drawing is different, then corresponding position relationship is also possible to change therewith, therefore cannot be interpreted as with this to protecting model
The restriction enclosed.
As shown in Figure 1, a kind of rotary kiln incinerator, including hopper 1, rotary kiln 2, the burning of the first combustion chamber 3, second
Room 9 and secondary furnace 10.In Fig. 1, A-A sections are the longitudinal direction connection signal of gasification gas channel 6 and the second combustion chamber 9.
Hopper 1 is arranged on the front end of rotary kiln 2, and 1 lower section of hopper is provided with material-pulling device 8, and material-pulling device 8 is along described time
2 central axis direction of rotary kiln moves reciprocatingly, and the fuel of hopper 1 is pushed into rotary kiln 2.
2 front end of rotary kiln is also associated with gasification gas channel 6, and gasification gas channel 6 is connected to 2 front end of rotary kiln and the second burning
Between 9 import of room.
First combustion chamber 3 is arranged on the end of rotary kiln 2, and 3 upper side of the first combustion chamber is equipped with connector and rotary kiln 2
Connection.The side that first combustion chamber 3 is located at below connector is provided with the fire grate 4 of inclination arrangement, fire grate 4 select drum grate or
Reciprocal grate.Fire grate 4 is set with rotary kiln 2 in staged.4 bottom of fire grate is provided with an air compartment 5 for being passed through gasifying agent.Gas
Agent includes air and/or water vapour.Persons skilled in the art should be appreciated that as needed, fire grate 4 could be provided as two
Grade even three-level fire grate, and adjacent two-stage fire grate is set in staged.
First combustion chamber, 3 bottom crimp forms slag channel, and 4 end of fire grate is connected with slag channel, slag channel bottom end
It is provided with water sealed tank 12.After-flame air holes 7 is provided in the first combustion chamber 3 sidewall slope arrangement opposite with connector and side wall to use
In penetrating air.After-flame air holes 7 is set towards fire grate 4 so that the air sprayed by after-flame air holes 7 is sprayed towards fire grate 4.Combustion
Air holes 7 to the greatest extent sets several, and several after-flame air holes 7 are towards fire grate 4 along the first combustion chamber 3 side wall opposite with connector
Setting so that the air sprayed by after-flame air holes 7 is sprayed towards fire grate 4.
As needed, 3 inner wall of the first combustion chamber can lay refractory material, and it is accumulation of heat gasification, and combustion to make the first combustion chamber 3
Room.
Second combustion chamber 9 is arranged with 10 horizontal alignment of secondary furnace and its bottom is provided with cigarette wind channel and connects.Second
Combustion chamber 9 and 10 bottom opposite tilt of secondary furnace arrange to form ash dropping hopper 13,13 bottom of ash dropping hopper setting ash tube 14.Ash tube
14 ends also use water seal.Second combustion chamber, 9 top is provided with overfiren air port 11.
When incinerator starts：
Moisture content fuel is fed into rotary kiln 2 from hopper 1, transport is slowly stirred by 2 front end of rotary kiln with the rotation of rotary kiln 2
It is fallen on the fire grate 4 of the first combustion chamber 3 by connector to 2 end of rotary kiln；It is passed through from an air compartment 5 of 4 bottom of fire grate
Gasifying agent simultaneously lights fuel so that gasification reaction generation gasification gas occurs for the fuel on fire grate 4, and part of fuel and/or gasification are residual
Slag, which further burns, generates combustion product gases and lime-ash；Gasification gas and combustion gas, which converge to 3 top of the first combustion chamber, becomes gaseous mixture,
Gaseous mixture enters rotary kiln 2 from connector and provides heat for fuel against fuel flowing；
The partial gasification agent being passed through from an air compartment 5 enters rotary kiln 2 also by connector, utilizes the first combustion chamber gaseous mixture heat
The heat that source provides so that gasification reaction generation gasification gas occurs for the fuel in rotary kiln 2；Gasification gas becomes together with gaseous mixture
Fuel gas, the fuel gas that carry ash content are burnt by the gasification gas channel 6 of 2 front end of rotary kiln into the second combustion chamber 9；
The cigarette wind channel Zigzag type of fuel gas from the second combustion chamber 9 and 10 bottom of secondary furnace of burning is made to enter secondary furnace 10 to burn
Completely, and the ash content that fuel gas carries is caused to deposit to 10 bottom of the second combustion chamber 9 and secondary furnace when fuel gas turns back flowing；
The lime-ash after burning is made to fall into slag channel from 4 end of fire grate, is cooled down in water sealed tank 12.
After incinerator starts during normal operation：
Moisture content fuel is fed into rotary kiln 2 from hopper 1；
Make during rotation of the fuel with rotary kiln 2 slowly stirred by 2 front end of rotary kiln and be transported to 2 end of rotary kiln,
Enter from 2 end of rotary kiln and under the gasification gas of backfire stream and row, gasifying agent and the heating of combustion gas gaseous mixture and mixed flue gas
In gasifying agent occur gasification reaction generation gasification gas；The gasification gas of fuel gasification reaction generation is mixed into remaining gaseous mixture
For fuel gas；The fuel gas that carry ash content enters the second combustion chamber 9 by the gasification gas channel 6 of 2 front end of rotary kiln；
Secondary Air is sprayed into from overfiren air port 11, fuel gas is made to burn in the second combustion chamber 9, and from the second combustion chamber 9 and secondary furnace
The cigarette wind channel Zigzag type of 10 bottoms enters secondary furnace 10 and burns completely；When fuel gas is turned back into secondary furnace 10, fuel gas is taken
The ash content of band deposits to 10 bottom of the second combustion chamber 9 and secondary furnace under inertia force effect；
Make after gasification be not gasified totally fuel and residue after gasifying passes through connector and falls on the fire grate 4 of the first combustion chamber 3；
Gasifying agent is passed through from an air compartment 5 of 4 bottom of fire grate so that gas further occurs for the fuel that is not gasified totally on fire grate 4
Change reaction generation gasification gas and residue after gasifying, and the generation of residue after gasifying oxidizing fire is caused to carry the combustion gas of heat；
Air is passed through from after-flame air holes 7, enhances the disturbance of the first combustion chamber 3, promotes the gas of the fuel that is not gasified totally on fire grate 4
Change the oxidizing fire with residue after gasifying, respectively generation gasification gas and combustion gas；During this, partial gasification gas is also fired by oxidation
Burn the combustion gas that generation carries heat；
Gasification gas and the gaseous mixture of combustion gas is made to converge to 3 top of the first combustion chamber, and enter 2 backfire material of rotary kiln from connector
It flows and provides heat for fuel；
The partial gasification agent being passed through from an air compartment 5 is also mixed with gaseous mixture enters rotary kiln 2 by connector；
The lime-ash after burning is made to fall into slag channel from 4 end of fire grate, is cooled down in water sealed tank 12.
When in rotary kiln 2 by heating gasification reaction occurs for moisture content fuel, conduct is precipitated by heating in the moisture in fuel
Gasifying agent.
One or more mixtures of the fuel including house refuse, industrial refuse.
When becoming ash dropping hopper 13 in the second combustion chamber 9 and 10 bottom opposite tilt of secondary furnace, ash dropping hopper 13 plays inertia point
Effect from device so that the ash separation that is carried in fuel gas is gathered in ash dropping hopper 13.The ash of ash dropping hopper 13 passes through ash tube
14 discharges.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of rotary kiln incinerator, it is characterised in that：The incinerator includes hopper（1）, rotary kiln（2）, first combustion
Burn room（3）, the second combustion chamber（9）And secondary furnace（10）, the hopper（1）It is arranged on the rotary kiln（2）Front end, described time
Rotary kiln（2）Front end is also associated with gasification gas channel（6）, the gasification gas channel（6）It is connected to rotary kiln（2）Front end and described the
Two combustion chambers（9）Between import；First combustion chamber（3）It is arranged on the rotary kiln（2）End, first combustion chamber
（3）Upper side is equipped with connector and the rotary kiln（2）Connection, first combustion chamber（3）One below connector
Side is provided with the fire grate of inclination arrangement（4）, the fire grate（4）With the rotary kiln（2）It is set in staged；The fire grate（4）
Bottom is provided with an air compartment（5）For being passed through gasifying agent；First combustion chamber（3）Bottom crimp forms slag channel, institute
State fire grate（4）End is connected with the slag channel, and the slag channel bottom end is provided with water sealed tank（12）；Second burning
Room（9）With the secondary furnace（10）Horizontal alignment is arranged and its bottom is provided with the connection of cigarette wind channel；.
2. a kind of rotary kiln incinerator according to claim 1, it is characterised in that：First combustion chamber（3）With
After-flame air holes is provided on the opposite sidewall slope arrangement of the connector and side wall（7）For spraying into air, and the after-flame
Air holes（7）Towards the fire grate（4）Setting so that pass through after-flame air holes（7）The air of penetrating is towards the fire grate（4）It sprays.
3. a kind of rotary kiln incinerator according to claim 2, it is characterised in that：The after-flame air holes（7）Along
One combustion chamber（3）The side wall opposite with the connector sets several, and several described after-flame air holes（7）Towards the stove
Row（4）Setting so that pass through after-flame air holes（7）The air of penetrating is towards the fire grate（4）It sprays.
4. a kind of rotary kiln incinerator according to claim 1, it is characterised in that：Second combustion chamber（9）With
The secondary furnace（10）Bottom opposite tilt is arranged to form ash dropping hopper（13）, the ash dropping hopper（13）Bottom sets ash tube
（14）.
5. a kind of rotary kiln incinerator according to claim 1, it is characterised in that：The hopper（1）Lower section is set
There is material-pulling device（8）.
6. a kind of rotary kiln incinerator according to claim 1, it is characterised in that：Second combustion chamber（9）Top
Portion is provided with overfiren air port（11）.
7. a kind of startup operation method of rotary kiln incinerator uses a kind of revolution kiln gas as described in claim 1
Change incinerator, it is characterised in that：The method includes
By moisture content fuel from hopper（1）Feed rotary kiln（2）, with rotary kiln（2）Rotation by rotary kiln（2）Front end is slow
It stirs and is transported to rotary kiln（2）End falls to the first combustion chamber by connector（3）Fire grate（4）On；From fire grate（4）Bottom
An air compartment（5）It is passed through gasifying agent and lights fuel so that fire grate（4）On fuel occur gasification reaction generation gasification gas,
Part of fuel and/or residue after gasifying, which further burn, generates combustion product gases and lime-ash；Gasification gas and combustion gas converge to the first combustion
Burn room（3）Top becomes gaseous mixture, and gaseous mixture enters rotary kiln from connector（2）Inverse fuel flowing provides heat for fuel；
From an air compartment（5）The partial gasification agent being passed through enters rotary kiln also by connector（2）, mixed using the first combustion chamber
The heat that gas heat source provides so that rotary kiln（2）Gasification reaction generation gasification gas occurs for interior fuel；Gasify gas and gaseous mixture one
Rising becomes fuel gas, and the fuel gas that carry ash content passes through rotary kiln（2）The gasification gas channel of front end（6）Into the second combustion chamber
（9）Burning；
Make the fuel gas of burning from the second combustion chamber（9）With secondary furnace（10）The cigarette wind channel Zigzag type of bottom enters secondary furnace
（10）Burning is complete, and the ash content that fuel gas carries is caused to deposit to the second combustion chamber when fuel gas turns back flowing（9）And combustion
Room to the greatest extent（10）Bottom；
Make the lime-ash after burning from fire grate（4）End falls into slag channel, in water sealed tank（12）Middle cooling.
8. a kind of operation method of rotary kiln incinerator is burnt using a kind of rotary kiln gasification as described in claim 1
Burn stove, it is characterised in that：The method includes
By moisture content fuel from hopper（1）Feed rotary kiln（2）；
Make fuel with rotary kiln（2）Rotation by rotary kiln（2）It slowly stirs and is transported to rotary kiln in front end（2）The process of end
In, from rotary kiln（2）End enters and the gasification gas of backfire stream and row, gasifying agent and the heating of combustion gas gaseous mixture under and
Gasification reaction generation gasification gas occurs for the gasifying agent in mixed flue gas；The gasification gas of fuel gasification reaction generation is mixed with remaining
Gas is mixed into fuel gas；The fuel gas that carry ash content passes through rotary kiln（2）The gasification gas channel of front end（6）Into the second combustion
Burn room（9）；
Make fuel gas in the second combustion chamber（9）Burning, and from the second combustion chamber（9）With secondary furnace（10）The cigarette wind channel folding of bottom
The formula of returning enters secondary furnace（10）Burning is complete；Fuel gas is turned back into secondary furnace（10）When, the ash content that fuel gas carries is in inertia
The second combustion chamber is deposited under power effect（9）And secondary furnace（10）Bottom；
Make after gasification be not gasified totally fuel and residue after gasifying passes through connector and falls to the first combustion chamber（3）Fire grate（4）
On；
From fire grate（4）Air compartment of bottom（5）It is passed through gasifying agent so that fire grate（4）On the fuel that is not gasified totally it is further
Gasification reaction generation gasification gas and residue after gasifying occurs, and the generation of residue after gasifying oxidizing fire is caused to carry the burning of heat
Gas；Gasification gas and the gaseous mixture of combustion gas converge to the first combustion chamber（3）Top, and enter rotary kiln from connector（2）Backfire
Stream is moved provides heat for fuel；
From an air compartment（5）The partial gasification agent being passed through also is mixed with gaseous mixture enters rotary kiln by connector（2）；
Make the lime-ash after burning from fire grate（4）End falls into slag channel, in water sealed tank（12）Middle cooling.
9. a kind of rotary kiln incinerator operation method according to claim 7 or 8, it is characterised in that：Moisture content fires
Material is in the rotary kiln（2）During the middle generation gasification reaction by heating, the moisture in fuel is precipitated by heating as gasifying agent.
10. a kind of rotary kiln incinerator operation method according to claim 7 or 8, it is characterised in that：The fuel
One or more mixtures including house refuse, industrial refuse.
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| CN201810350390.3A CN108224437A (en) | 2018-04-18 | 2018-04-18 | A kind of rotary kiln incinerator and its operation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112197271A (en) * | 2020-10-10 | 2021-01-08 | 泰州明锋资源再生科技有限公司 | Kiln head structure of hazardous waste incineration rotary kiln |
| CN113970101A (en) * | 2020-07-22 | 2022-01-25 | 中冶长天国际工程有限责任公司 | Hazardous waste pyrolysis incineration system and temperature control method thereof |
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Address after: Room A601, building a 79, Shuangqing Road, Haidian District, Beijing 100084 Applicant after: Beijing hengran Technology Co.,Ltd. Address before: Room A601, building a 79, Shuangqing Road, Haidian District, Beijing 100084 Applicant before: BEIJING ONE-A HI-TECH ENERGY TECHNOLOGY Co.,Ltd. |
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Application publication date: 20180629 |