CN108758638B - Air-classified regulation and control pyrolysis and combustion integrated furnace - Google Patents
Air-classified regulation and control pyrolysis and combustion integrated furnace Download PDFInfo
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- CN108758638B CN108758638B CN201810260362.2A CN201810260362A CN108758638B CN 108758638 B CN108758638 B CN 108758638B CN 201810260362 A CN201810260362 A CN 201810260362A CN 108758638 B CN108758638 B CN 108758638B
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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
- F23G5/0276—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using direct heating
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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
- F23G5/44—Details; Accessories
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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
- F23G5/50—Control or safety arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/304—Burning pyrosolids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2207/00—Control
- F23G2207/30—Oxidant supply
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses an air-staged-regulation pyrolysis-combustion integrated furnace which comprises a pyrolysis furnace main body, wherein the pyrolysis furnace main body is surrounded by a flame retardant coating to form a combustion heating zone, a first air inlet is formed in the pyrolysis furnace main body and is communicated with a combustor, the pyrolysis furnace main body further comprises a screw pyrolysis tube which obliquely penetrates through the combustion heating zone, a stirring hopper is arranged at the top of the screw pyrolysis tube, biomass waste enters the screw pyrolysis tube after being treated by the stirring hopper, a synthesis gas guide tube is further arranged at the top of the screw pyrolysis tube, one end of the synthesis gas guide tube is communicated with the top of the screw pyrolysis tube, and the other end of the synthesis gas guide tube extends into the combustion heating zone. The invention solves the problem that the original pyrolysis equipment is easy to generate tar to cause equipment condensation in the pyrolysis process.
Description
Technical Field
The invention belongs to the field of biomass waste treatment and recycling, relates to biomass pyrolysis and combustion integrated equipment, and particularly relates to an air-classification regulation and control pyrolysis and combustion integrated furnace.
Background
The biomass waste has a large production amount, and must be properly treated and disposed or recycled in order to prevent the biomass waste from polluting the environment. Pyrolysis is a treatment technique for heating biomass waste under oxygen-free or oxygen-controlled conditions to obtain products such as synthesis gas, tar, biochar and the like. The technology treats the biomass waste, generates little secondary pollution, can obtain high-energy-grade synthesis gas, and has higher energy utilization value and economic value; the solid by-product biochar has better stability, and heavy metals are solidified in the biochar. However, tar can be produced in the pyrolysis process, and after cooling, the tar will be condensed to block the pipeline, which is easy to cause operation failure.
Therefore, how to reduce the generation of tar condensation in the pyrolysis process becomes a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide an air-staged-regulation pyrolysis-combustion integrated furnace to solve the problem that tar is easily generated in the pyrolysis process of original pyrolysis equipment to cause equipment condensation.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides an integrative stove of air classification regulation and control pyrolysis burning, includes a pyrolysis oven main part, the pyrolysis oven main part is enclosed by the flame retardant coating and closes the formation zone of heating of burning, first air inlet has been seted up in the pyrolysis oven main part, first air inlet is linked together with the combustor, wherein, the pyrolysis oven main part still includes that an slant passes the screw rod pyrolysis tube of the zone of heating of burning, screw rod pyrolysis tube top is provided with the stirring hopper, and the living beings wastes material warp it is intraductal to get into the screw rod pyrolysis after the stirring hopper is handled, screw rod pyrolysis tube top still is provided with a synthetic gas pipe, synthetic gas pipe one end with screw rod pyrolysis tube top is linked together, and the other end stretches into to in the zone of heating of burning.
Further, the screw pyrolysis tube comprises a screw and a metal tube positioned outside the screw, a filling space for accommodating the stirred biomass waste is formed between the metal tube and the screw, and a frequency modulator for controlling the rotation speed of the screw is further arranged at the top end of the screw.
Further, the burner is also connected to a combustion blower for blowing air to the burner through a pipe.
Furthermore, a second air inlet is formed in the combustion heating area and is connected with a temperature adjusting air blower through a pipeline.
Further, the screw rod pyrolysis tube bottom still connects the water-cooling pipe of slagging tap, the water-cooling pipe of slagging tap is located outside the refractory layer.
Furthermore, the pyrolysis furnace main body is also provided with a flue gas outlet, and the flue gas outlet is positioned at the top of the pyrolysis furnace main body and is communicated with the internal combustion heating zone.
Furthermore, the first air inlet and the second air inlet are both arranged on the side face of the bottom of the pyrolysis furnace main body, and the synthesis gas guide pipe extends into the bottom of the combustion heating area and is close to the first air inlet.
Further, the frequency modulator is a manual frequency modulator.
Compared with the prior art, the air-grading regulation and control pyrolysis and combustion integrated stove has the following technical effects:
the invention realizes the synchronous pyrolysis and combustion of biomass waste: to the problem that pyrolysis in-process liquid product tar condensation blocks up the pipeline, reduces pyrolysis product energy recuperation efficiency, adopt the synthetic gas pipe, follow the burning of the whole leading-in burning zone of heating of spiral pyrolysis pipe with the pyrolysis product, reduced the tar condensation problem that long pipeline heat dissipation leads to, all burn the gaseous state and the liquid product of pyrolysis product simultaneously, improve product energy utilization by a wide margin.
The invention realizes the graded regulation and control of air: the first stage of regulation and control, supplementary fuel is added into the combustor by a combustion blower to support combustion; and in the second-stage regulation, air is blown in when the oxygen in the combustion heating area is insufficient, the synthesis gas is not completely combusted or the temperature in the pyrolysis furnace main body is overhigh by the temperature regulating blower in the combustion heating area, so that accurate air blowing and temperature control are realized.
Drawings
FIG. 1 is a schematic structural diagram of an air-staged-control pyrolysis-combustion integrated furnace according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an air-staged-regulation pyrolysis-combustion integrated furnace according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the problem that tar generated in the biomass waste pyrolysis process affects the operation of pyrolysis equipment, the invention designs the air-staged-regulation pyrolysis-combustion integrated furnace, which realizes synchronous pyrolysis and combustion in the furnace body, reduces cooling links, prevents tar from condensing, simultaneously utilizes heat in tar, and realizes accurate air blowing temperature control by designing air-staged regulation.
Example one
Referring to fig. 1, the air-staged-regulation pyrolysis-combustion integrated furnace disclosed by the embodiment of the invention comprises a pyrolysis furnace main body 1, wherein the pyrolysis furnace main body is used for anaerobic pyrolysis and combustion of pyrolysis products after biomass waste is heated, a support frame 2 is arranged at the bottom of the pyrolysis furnace main body 1, a refractory layer 3 formed by building refractory materials is arranged at the upper part of the support frame 2, a combustion heating area with a certain spatial range is formed in the refractory layer 3 in a hollow mode, and the spatial structure of the combustion heating area can be a regular or irregular geometric figure. First air inlet has been seted up on the pyrolysis oven main part 1, first air inlet is linked together with the pipeline at combustor 8 place, combustor 8 is used for supplying fuel (for example natural gas) burning in the zone of heating to the burning, provides the heat for biomass waste pyrolysis, and the waste gas that the zone of heating of burning produced is outwards discharged from the flue gas discharge port 11 that is located pyrolysis oven main part 1 top. The pyrolysis furnace main part 1 still includes a slant and passes the screw rod pyrolysis tube 4 of the burning zone of heating, and the slope setting makes the material have the buffering in the screw rod pyrolysis tube, also does benefit to the exhaust, and the slope here refers to the contained angle of 4 orientations of screw rod pyrolysis tube relative horizontal plane, and its acute angle contained angle that forms with the water flat line is roughly between 45 degrees to 90 degrees. 4 tops of screw rod pyrolysis tube are provided with stirring hopper 5, and the living beings wastes material warp get into in the screw rod pyrolysis tube behind the 5 misce benes of stirring hopper, can be right the stirring speed of stirring hopper 5 is controlled, and then control living beings wastes material leak the speed under the bottom small opening, screw rod pyrolysis tube top still is provided with a synthetic gas pipe 6, synthetic gas pipe 6 one end with 4 tops of screw rod pyrolysis tube are linked together, and the other end stretches into extremely in the burning zone of heating.
Referring to fig. 1 again, in the present embodiment, the screw pyrolysis tube 4 includes a screw and a metal tube located outside the screw, the metal tube and the screw are both made of high temperature resistant metal materials, a filling space for accommodating the stirred biomass waste is formed between the metal tube and the screw, the biomass waste is heated and pyrolyzed by a large amount of fuel in the combustion heating area in the filling space, and the generated gaseous products (including products which are gaseous at high temperature and liquid at normal temperature) escape upwards and are collected by the syngas conduit 6, guided into the combustion heating area, and heated and pyrolyzed again. The screw rod top still is provided with control screw rod rotational frequency's frequency modulator 12, frequency modulator 12 can be for manual frequency modulator or adopt electronic frequency modulator, the screw rod is constantly rotatory, 5 biomass waste that leak into in the bottom of stirring hopper passes through screw rod pyrolysis pipe 4 to bottom promotion gradually by the top of pyrolysis oven main part 1, through 12 control screw rod rotational speeds of frequency modulator and frequency to control biomass waste's dwell time in screw rod pyrolysis pipe 4, for example to the biomass waste of pyrolysis difficulty, set up the rotational frequency and reduce, so can control its time in screw rod pyrolysis pipe 4 and be a little longer, the pyrolysis is more abundant. The bottom of the screw pyrolysis tube 4 is also connected with a water-cooling slag discharging tube 7, and the water-cooling slag discharging tube 7 is positioned outside the refractory layer 3 and is fixed by the support frame 2. And the residual solid product biochar after the biomass waste is pyrolyzed is cooled by a water-cooling slag discharging pipe 7 and then is discharged from the bottom of the pyrolyzing furnace main body 1. The high-temperature ash discharged from the screw pyrolysis pipe 4 can be broken into small blocks by the double-roller type slag breaker, so that the high-temperature ash is convenient to cool and convey, and the broken ash enters the water-cooling slag discharging pipe 7 for sufficient heat exchange and is discharged after cooling.
In this embodiment, the synthesis gas conduit 6 extends downward to the bottom of the combustion heating zone along the inner wall of the flame retardant coating 3 and is close to the first inlet, and since the first inlet is a port through which the burner 8 sends heat to the combustion heating zone, the synthesis gas conduit 6 is close to the first inlet, so that the gas or gas-liquid mixture generated in the screw pyrolysis tube 4 can obtain a good combustion effect again, wherein a part of the synthesis gas conduit 6 is outside the flame retardant coating 3 and a part of the synthesis gas conduit 6 is inside the flame retardant coating 3, and an adjusting valve may be disposed in the synthesis gas conduit 6 to control the speed of gas inlet to the combustion heating zone.
Aiming at the problem that the energy recovery efficiency of the pyrolysis product is reduced because the liquid product tar is condensed to block a pipeline in the pyrolysis process, the invention adopts the synthesis gas guide pipe 6 to guide the pyrolysis product from the spiral pyrolysis pipe into the combustion heating area for combustion, thereby reducing the tar condensation problem caused by heat dissipation of a long pipeline, simultaneously burning all gaseous and liquid products formed by the pyrolysis product, and greatly improving the energy utilization rate of the product.
Example two
Referring to fig. 2, in the present embodiment, the burner 8 is further connected to a combustion blower 9 for blowing air to the burner 8 through a pipe for blowing air as combustion-supporting gas for combustion of supplementary fuel in the burner 8 so that the fuel can be completely combusted.
Because combustor 8 constantly supplies heat to the burning zone of heating, the burning zone of heating can have oxygen not enough, the synthetic gas burning is incomplete or pyrolysis furnace main part 1 in the high temperature still seted up the second air inlet in the burning zone of heating, the second air inlet passes through pipe connection air-blower 10 that adjusts the temperature, through air-blower 10 adjusts the temperature, to the burning zone of heating drum income air, adjusts the combustion state and the pyrolysis furnace main part 1 in the temperature.
Wherein, first, second air inlet all set up in the bottom side of pyrolysis oven main part 1 so can form the heating space of maximize, and the screw rod pyrolysis tube 4 runs through the burning zone of heating for the slant, and it has the biggest length of being heated and the area of being heated to the installation requirement of screw rod pyrolysis tube 4.
The structure of the pyrolysis furnace main body 1 in this embodiment is the same as that in the first embodiment, and is not described herein again.
The working principle of the embodiment is as follows: pyrolysis and combustion of biomass waste are completed in the pyrolysis furnace main body 1, supplementary fuel such as natural gas enters from the combustor 8, is mixed with air blown by the combustion blower 9 and then is combusted, and heat required by the pyrolysis furnace is supplemented; when the combustion-supporting air in the pyrolysis furnace main body 1 is insufficient or the temperature of the furnace body is too high, the temperature-adjusting blower 10 is started to blow air into the pyrolysis furnace main body 1, so that the combustion-supporting air is supplemented or the temperature of the furnace body is reduced.
The embodiment realizes air classification regulation and control during combustion: the first stage of regulation and control, supplementary fuel is added into the combustor 8 to support combustion by the combustion blower 9; and in the second-stage regulation, air is blown in when the oxygen in the combustion heating area is insufficient, the synthesis gas is not completely combusted or the temperature in the pyrolysis furnace main body 1 is overhigh by the temperature regulating blower 10 in the combustion heating area, so that the accurate blowing temperature control is realized.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. An air-staged-regulation pyrolysis-combustion integrated furnace comprises a pyrolysis furnace main body, wherein the pyrolysis furnace main body is surrounded by a fire-resistant layer to form a combustion heating zone, a first air inlet is formed in the pyrolysis furnace main body and is communicated with a combustor, and the pyrolysis furnace main body is characterized by further comprising a screw pyrolysis tube which obliquely penetrates through the combustion heating zone, a stirring hopper is arranged at the top of the screw pyrolysis tube, biomass waste is treated by the stirring hopper and then enters the screw pyrolysis tube, a synthesis gas guide tube is further arranged at the top of the screw pyrolysis tube, one end of the synthesis gas guide tube is communicated with the top of the screw pyrolysis tube, and the other end of the synthesis gas guide tube extends into the combustion heating zone;
a second air inlet is also formed in the combustion heating area and is connected with a temperature-adjusting blower through a pipeline;
the first air inlet and the second air inlet are both arranged on the side surface of the bottom of the pyrolysis furnace main body; the synthesis gas conduit extends into the bottom of the combustion heating zone and is close to the first gas inlet.
2. The pyrolysis and combustion integrated furnace according to claim 1, wherein the screw pyrolysis tube comprises a screw and a metal tube located outside the screw, a filling space for accommodating the biomass waste after stirring is formed between the metal tube and the screw, and a frequency modulator for controlling the rotation speed of the screw is further arranged at the top end of the screw.
3. The pyrolysis-combustion integrated furnace of claim 2, wherein the burner is further connected to a combustion blower for blowing air to the burner through a pipe.
4. The pyrolysis and combustion integrated furnace according to claim 2, wherein a water-cooling slag discharging pipe is further connected to the bottom of the screw pyrolysis pipe, and the water-cooling slag discharging pipe is located outside the refractory layer.
5. The pyrolysis and combustion integrated furnace of claim 3, wherein the pyrolysis furnace body is further provided with a flue gas outlet, and the flue gas outlet is positioned at the top of the pyrolysis furnace body and is communicated with the combustion heating zone inside.
6. The pyrolysis-combustion integrated furnace of claim 2, wherein the frequency modulator is a manual frequency modulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810260362.2A CN108758638B (en) | 2018-03-27 | 2018-03-27 | Air-classified regulation and control pyrolysis and combustion integrated furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810260362.2A CN108758638B (en) | 2018-03-27 | 2018-03-27 | Air-classified regulation and control pyrolysis and combustion integrated furnace |
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| Publication Number | Publication Date |
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| CN108758638A CN108758638A (en) | 2018-11-06 |
| CN108758638B true CN108758638B (en) | 2020-04-17 |
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| CN201810260362.2A Active CN108758638B (en) | 2018-03-27 | 2018-03-27 | Air-classified regulation and control pyrolysis and combustion integrated furnace |
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| CN115405918B (en) * | 2022-08-11 | 2023-06-27 | 湖北鑫星节能炉具有限公司 | Biomass particle combustion furnace with bottom ventilation structure |
Citations (5)
| 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 |
-
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- 2018-03-27 CN CN201810260362.2A patent/CN108758638B/en active Active
Patent Citations (5)
| 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 |
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