CN108758638A - A kind of air classification regulation and control pyrolysis and combustion all-in-one oven - Google Patents

A kind of air classification regulation and control pyrolysis and combustion all-in-one oven Download PDF

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Publication number
CN108758638A
CN108758638A CN201810260362.2A CN201810260362A CN108758638A CN 108758638 A CN108758638 A CN 108758638A CN 201810260362 A CN201810260362 A CN 201810260362A CN 108758638 A CN108758638 A CN 108758638A
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CN
China
Prior art keywords
pyrolysis
combustion
screw rod
oven
main body
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Application number
CN201810260362.2A
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Chinese (zh)
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CN108758638B (en
Inventor
王伟
陈坦
王迪
王一迪
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Tsinghua University
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Tsinghua University
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F23G5/0276Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44Details; Accessories
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50Control or safety arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00Pretreatment
    • F23G2201/30Pyrolysing
    • F23G2201/304Burning pyrosolids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00Control
    • F23G2207/30Oxidant supply

Abstract

The invention discloses a kind of air classifications to regulate and control pyrolysis and combustion all-in-one oven, including a pyrolysis furnace main body, the pyrolysis furnace main body is enclosed a combustion heating area by flame retardant coating, the first air inlet is offered on the pyrolysis furnace main body, first air inlet is connected with burner, wherein, it is described pyrolysis furnace main body further include one obliquely through the combustion heating area screw rod solution heat pipe, the antipyretic tube top portion of screw rod is provided with stirring hopper, biomass waste enters after stirring hopper processing in screw rod solution heat pipe, the antipyretic tube top portion of screw rod is additionally provided with a synthesis airway, it is connected at the top of the synthesis gas tube at one end and the screw rod thermal decomposition tube, the other end stretches in the combustion heating area.The present invention solves the problems, such as that original pyrolysis plant easy tos produce tar in pyrolytic process and equipment is caused to condense.

Description

A kind of air classification regulation and control pyrolysis and combustion all-in-one oven
Technical field
The invention belongs to biomass waste processing disposition and recycling field, are related to a kind of biomass pyrolytic combustion integrative Equipment, systems which a kind of air classification regulates and controls pyrolysis and combustion all-in-one oven.
Background technology
Biomass waste yield is big, to prevent it from polluting environment, it is necessary to deal carefully with disposition or recycling.Pyrolysis It is heating biological matter waste under the conditions of anaerobic or control oxygen, obtains the treatment technology of the products such as synthesis gas, tar and charcoal.The skill Art handles biomass waste, and the secondary pollution of generation is small, can get the synthesis gas of high-energy grade, has higher using energy source Value and economic value;There is solid by-product charcoal preferable stability, heavy metal to be cured wherein.But it was pyrolyzed Journey can generate tar, will be condensed after cooling and block pipeline, easily cause operation troubles.
Therefore, in pyrolytic process, the generation of tar condensing how is reduced, is become for current urgent problem to be solved.
Invention content
It is an object of the present invention to provide a kind of air classifications to regulate and control pyrolysis and combustion all-in-one oven, is set with solving original pyrolysis It is standby that the problem of tar causes equipment to condense is easy tod produce in pyrolytic process.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows:
A kind of air classification regulation and control pyrolysis and combustion all-in-one oven, including a pyrolysis furnace main body, the pyrolysis furnace main body is by fire resisting Floor is enclosed a combustion heating area, and the first air inlet, first air inlet and burning are offered on the pyrolysis furnace main body Device is connected, wherein it is described pyrolysis furnace main body further include one obliquely through the combustion heating area screw rod solution heat pipe, the spiral shell The antipyretic tube top portion of bar is provided with stirring hopper, and biomass waste enters after stirring hopper processing in screw rod solution heat pipe, institute It states the antipyretic tube top portion of screw rod and is additionally provided with a synthesis airway, the synthesis gas tube at one end and phase at the top of the screw rod thermal decomposition tube Connection, the other end stretch in the combustion heating area.
Further, the screw rod thermal decomposition tube includes a screw rod and the metal tube on the outside of screw rod, the metal tube with The filling space of the biomass waste after the accommodating stirring is formed between screw rod, the screw tip is additionally provided with control The frequency modulator of the screw rod rotary speed.
Further, the burner also connects the combustion blower that air blast is carried out to the burner by a pipeline.
Further, the second air inlet is further opened in the combustion heating area, second air inlet passes through pipeline Connect temperature adjustment air blower.
Further, the screw rod pyrolysis bottom of the tube is also connected with water cooling residue outlet, and the water cooling residue outlet is located at described resistance to Outside fire bed.
Further, the pyrolysis furnace main body is further opened with flue gas discharge opening, and the flue gas discharge opening is located at pyrolysis oven master At the top of body and it is connected to internal combustion heating area.
Further, first, second air inlet is opened in the bottom sides of the pyrolysis furnace main body, the synthesis Airway stretches to combustion heating area bottom and close to first air inlet.
Further, the frequency modulator is manual frequency modulator.
Compared with prior art, air classification regulation and control pyrolysis and combustion all-in-one oven of the present invention is imitated with following technology Fruit:
(1) present invention realizes the synchronous pyrolysis and burning of biomass waste:For liquid product tar in pyrolytic process Condensation blocks pipeline, reduces the problem of thermal decomposition product energy recovery efficiency, using synthesis airway, thermal decomposition product is warm from spiral It solves pipe and all imports the burning of combustion heating area, reduce tar condensing problem caused by long pipe runs heat dissipation, while by thermal decomposition product Gaseous state and liquid form product all burn, greatly improve product capacity usage ratio.
(2) present invention realizes the classification regulation and control of air:The first order regulates and controls, and supplement fuel is in the burner with air blast of burning Air-breathing is added in machine;The second level regulates and controls, in combustion heating area by temperature adjustment air blower in combustion heating area oxygen deficiency, synthesis Air is blasted when the temperature is excessively high in gas incomplete combustion or pyrolysis furnace main body, realizes accurate air blast and temperature control.
Description of the drawings
Fig. 1 is the structural schematic diagram of the air classification regulation and control pyrolysis and combustion all-in-one oven described in the embodiment of the present invention one.
Fig. 2 is the structural schematic diagram of the air classification regulation and control pyrolysis and combustion all-in-one oven described in the embodiment of the present invention two.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail, but not as a limitation of the invention.
Pyrolysis plant operation is influenced to solve the problems, such as that biomass waste pyrolytic process generates tar, the present invention devises one Kind air classification regulates and controls pyrolysis and combustion all-in-one oven, realizes that pyrolysis is synchronous with burning in furnace body and carries out, and the cooling link of reduction prevents The condensation of tar, while the heat in tar is utilized, design air classification regulation and control, realize accurate air-blowing temperature control in addition.
Embodiment one
Shown in referring to Fig.1, a kind of air classification disclosed in the embodiment of the present invention regulates and controls pyrolysis and combustion all-in-one oven, including one It is pyrolyzed furnace main body 1, for the burning of anoxybiotic pyrolysis and thermal decomposition product after biomass waste heating, 1 bottom of pyrolysis furnace main body For supporting rack 2,2 top of support frame as described above is the flame retardant coating 3 constituted using refractory material laying, 3 inner hollow of the flame retardant coating The combustion heating area with certain space range is formed, the space structure in the combustion heating area can be rule or irregular Geometric figure.The first air inlet, pipe of first air inlet where with burner 8 are offered on the pyrolysis furnace main body 1 Road is connected, and the burner 8, which is used to supplement fuel (such as natural gas) into combustion heating area, to burn, and is biomass waste heat Solution provides heat, and the exhaust gas that combustion heating area generates is discharged from the flue gas discharge opening 11 positioned at 1 top of pyrolysis furnace main body.Institute State pyrolysis furnace main body 1 further include one obliquely through the combustion heating area screw rod solution heat pipe 4, be obliquely installed so that material is in spiral shell There is in bar thermal decomposition tube buffering, be also conducive to exhaust, inclination herein refers to the folder of 4 direction relative level of the screw rod thermal decomposition tube Angle, the acute angle formed with horizontal line is about between 45 degree to 90 degree.4 top of the screw rod solution heat pipe is provided with stirring Hopper 5, biomass waste enter in screw rod solution heat pipe after mixing through the stirring hopper 5, can be to the stirring hopper 5 Mixing speed is controlled, and then controls biomass waste in the lower leakage rate of bottom leakage hole, and the antipyretic tube top portion of screw rod is also It is provided with a synthesis airway 6, described 6 one end of synthesis airway is connected with 4 top of the screw rod thermal decomposition tube, and the other end stretches into In to the combustion heating area.
Please refer to Fig. 1 again, in the present embodiment, the screw rod thermal decomposition tube 4 includes a screw rod and the metal on the outside of screw rod Pipe, the metal tube and screw rod are all made of heat safe metal material and are made, and the appearance is formed between the metal tube and screw rod The filling space of the biomass waste after stirring is set, biomass waste fills a large amount of combustions being burned in space in heating zone herein Material carries out heating pyrolysis, the gaseous products of generation (containing be under high temperature gaseous state, room temperature it is condensable be liquid product) upward loss, It is collected by synthesizing airway 6, imports combustion heating area, be heated again pyrolysis.The screw tip is additionally provided with described in control The frequency modulator 12 of screw rod speed, the frequency modulator 12 can be manual frequency modulator or use electronic frequency modulator, and screw rod is not Disconnected rotation, the biomass waste that 5 bottom of stirring hopper is leak into gradually from the top of pyrolysis furnace main body 1 by screw rod thermal decomposition tube 4 to Bottom pushes, and controls screw speed and frequency by frequency modulator 12, stops in screw rod thermal decomposition tube 4 to control biomass waste The time is stayed, such as the biomass waste that pyrolysis is difficult, setting rotational frequency reduces, and can so control it and is pyrolyzed in screw rod Time in pipe 4 is slightly longer, and pyrolysis is more abundant.4 bottom of screw rod thermal decomposition tube is also connected with water cooling residue outlet 7, the water Cold residue outlet 7 is located at outside the flame retardant coating 3, and is fixed by support frame as described above 2.Remaining solid-state after the biomass waste pyrolysis After product charcoal is cooled down by water cooling residue outlet 7, it is discharged from 1 bottom of pyrolysis furnace main body.Wherein, it is discharged from screw rod thermal decomposition tube 4 High-temperature ash can first pass through pair roller type slag breaker and be broken into fritter, convenient for cooling and conveying, lime-ash after crushing It enters back into after water cooling residue outlet 7 fully exchanges heat and cools down and is discharged.
In the present embodiment, the synthesis airway 6 of stating is extended downwardly into along 3 inner wall of flame retardant coating to combustion heating area bottom Portion and close to first air inlet, since the first air inlet is the mouth that burner 8 send to combustion heating area heat, therefore the synthesis First air inlet that is located proximate to of airway 6 enables to the gas or gas-liquid mixture that are generated in screw rod thermal decomposition tube 4 Good combustion efficiency is obtained again, wherein 6 part of the synthesis airway is in the outer part of flame retardant coating 3 in flame retardant coating 3 It is interior, control valve can also be set in the synthesis airway 6, to control the speed to the air inlet of combustion heating area.
Pipeline is blocked for liquid product tar condensing in pyrolytic process, to reduce thermal decomposition product energy recovery efficiency Problem, the present invention all import combustion heating area from spiral thermal decomposition tube using synthesis airway 6, by thermal decomposition product and burn, reduce Tar condensing problem caused by long pipe runs heat dissipation, while gaseous state and liquid form product that thermal decomposition product is formed all burn, greatly Width improves product capacity usage ratio.
Embodiment two
With reference to shown in Fig. 2, in the present embodiment, the burner 8 is also connected by a pipeline and is carried out to the burner 8 The combustion blower 9 of air blast blasts air as combustion-supporting gas, so that combustion for burning in burner 8 for supplement fuel Material being capable of completely burned.
Since burner 8 constantly carries out heat supply to combustion heating area, combustion heating area can have oxygen deficiency, synthesis gas combustion It burns not exclusively or temperature is excessively high in pyrolysis furnace main body 1, be further opened with the second air inlet in the combustion heating area, described second Air inlet connects temperature adjustment air blower 10 by pipeline, and by the temperature adjustment air blower 10, air is blasted to combustion heating area, adjusts Temperature in combustion state and pyrolysis furnace main body 1.
Wherein, first, second air inlet is opened in the bottom sides of the pyrolysis furnace main body 1, so being capable of shape At maximized heating space, screw rod thermal decomposition tube 4 runs through combustion heating area to be oblique, and the installation requirement to screw rod thermal decomposition tube 4 is It is with maximum heated length and heating surface area.
1 structure of pyrolysis furnace main body in the present embodiment is identical as embodiment one, and details are not described herein.
The operation principle of the present embodiment is:The pyrolysis and burning of biomass waste are completed in pyrolysis furnace main body 1, naturally The supplement fuel such as gas is entered by burner 8, and the air mixing after-combustion blasted with combustion blower 9, supplement pyrolysis oven needs Heat;It is being pyrolyzed in furnace main body 1 combustion-supporting lack of air or when excessively high furnace body temperature, is starting temperature adjustment air blower 10 to pyrolysis furnace main body 1 blasts air, supplements combustion air or cools down for furnace body.
The present embodiment realizes air classification regulation and control when burning:The first order regulates and controls, and supplement fuel is in burner 8 with burning Air-breathing is added in air blower 9;The second level regulate and control, combustion heating area by temperature adjustment air blower 10 combustion heating area oxygen not Foot, syngas combustion not exclusively or in pyrolysis furnace main body 1 blast air when the temperature is excessively high, realize accurate air blast temperature control.
Several preferred embodiments of the present invention have shown and described in above description, but as previously described, it should be understood that the present invention Be not limited to form disclosed herein, be not to be taken as excluding other embodiments, and can be used for various other combinations, Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through in the scope of the invention is set forth herein It is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be in this hair In the protection domain of bright appended claims.

Claims (8)

1. a kind of air classification regulates and controls pyrolysis and combustion all-in-one oven, including a pyrolysis furnace main body, the pyrolysis furnace main body is by flame retardant coating It is enclosed a combustion heating area, the first air inlet, first air inlet and burner are offered on the pyrolysis furnace main body Be connected, which is characterized in that it is described pyrolysis furnace main body further include one obliquely through the combustion heating area screw rod solution heat pipe, institute It states the antipyretic tube top portion of screw rod and is provided with stirring hopper, biomass waste enters screw rod solution heat pipe after stirring hopper processing Interior, the antipyretic tube top portion of screw rod is additionally provided with a synthesis airway, the synthesis gas tube at one end and the screw rod thermal decomposition tube Top is connected, and the other end stretches in the combustion heating area.
2. pyrolysis and combustion all-in-one oven as described in claim 1, which is characterized in that the screw rod thermal decomposition tube includes a screw rod and position Metal tube on the outside of screw rod, the biomass waste formed between the metal tube and screw rod after the accommodating stirring are filled out Space is filled, the screw tip is additionally provided with the frequency modulator for controlling the screw rod rotary speed.
3. pyrolysis and combustion all-in-one oven as claimed in claim 2, which is characterized in that the burner also by a pipeline connect to The burner carries out the combustion blower of air blast.
4. pyrolysis and combustion all-in-one oven as claimed in claim 3, which is characterized in that be further opened in the combustion heating area Two air inlets, second air inlet connect temperature adjustment air blower by pipeline.
5. pyrolysis and combustion all-in-one oven as claimed in claim 2, which is characterized in that the screw rod pyrolysis bottom of the tube is also connected with water cooling Residue outlet, the water cooling residue outlet are located at outside the flame retardant coating.
6. pyrolysis and combustion all-in-one oven as claimed in claim 3, which is characterized in that the pyrolysis furnace main body is further opened with flue gas row Outlet, the flue gas discharge opening are located at pyrolysis oven body top and are connected to internal combustion heating area.
7. pyrolysis and combustion all-in-one oven as claimed in claim 4, which is characterized in that first, second air inlet is opened in The bottom sides of the pyrolysis furnace main body, the synthesis airway stretch to combustion heating area bottom and close to described first Air inlet.
8. pyrolysis and combustion all-in-one oven as claimed in claim 2, which is characterized in that the frequency modulator is manual frequency modulator.
CN201810260362.2A 2018-03-27 2018-03-27 Air-classified regulation and control pyrolysis and combustion integrated furnace Active CN108758638B (en)

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CN108758638B CN108758638B (en) 2020-04-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115405918A (en) * 2022-08-11 2022-11-29 湖北鑫星节能炉具有限公司 Biomass particle combustion furnace with bottom ventilation structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101134899A (en) * 2006-08-28 2008-03-05 李延韬 Biomass energy converter
CN102199451A (en) * 2011-04-07 2011-09-28 北京联合创业环保工程有限公司 Biomass destructive distillation and cracking integrated equipment and biomass destructive distillation and cracking system
CN102517054A (en) * 2011-11-29 2012-06-27 华南农业大学 Device and method for continuous pyrolysis of agricultural and forestry biomass and fractional collection and purification of product
CN105623685A (en) * 2015-12-09 2016-06-01 华中师范大学 Method and equipment for continuous co-production of gas and charcoal through biomass material in-situ catalytic cracking
CN106322362A (en) * 2016-08-31 2017-01-11 北京北方永邦科技股份有限公司 Biomass combustor and biomass fuel combustion method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101134899A (en) * 2006-08-28 2008-03-05 李延韬 Biomass energy converter
CN102199451A (en) * 2011-04-07 2011-09-28 北京联合创业环保工程有限公司 Biomass destructive distillation and cracking integrated equipment and biomass destructive distillation and cracking system
CN102517054A (en) * 2011-11-29 2012-06-27 华南农业大学 Device and method for continuous pyrolysis of agricultural and forestry biomass and fractional collection and purification of product
CN105623685A (en) * 2015-12-09 2016-06-01 华中师范大学 Method and equipment for continuous co-production of gas and charcoal through biomass material in-situ catalytic cracking
CN106322362A (en) * 2016-08-31 2017-01-11 北京北方永邦科技股份有限公司 Biomass combustor and biomass fuel combustion method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115405918A (en) * 2022-08-11 2022-11-29 湖北鑫星节能炉具有限公司 Biomass particle combustion furnace with bottom ventilation structure

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