CN107841328A - A kind of pulverized coal pyrolysis stove with homocline structure - Google Patents
A kind of pulverized coal pyrolysis stove with homocline structure Download PDFInfo
- Publication number
- CN107841328A CN107841328A CN201711289719.1A CN201711289719A CN107841328A CN 107841328 A CN107841328 A CN 107841328A CN 201711289719 A CN201711289719 A CN 201711289719A CN 107841328 A CN107841328 A CN 107841328A
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- CN
- China
- Prior art keywords
- material distributing
- distributing cap
- fine coal
- pulverized coal
- radiant tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000003245 coal Substances 0.000 title claims abstract description 71
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 96
- 230000007935 neutral effect Effects 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 230000005855 radiation Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 230000007423 decrease Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B31/00—Charging devices
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to a kind of pulverized coal pyrolysis stove with homocline structure, mainly include:Body of heater, radiant tube and homocline structure, wherein, radiant tube is arranged in furnace chamber described in multilayer, and forms neutral area, and the homocline structure setting includes in the neutral area, the homocline structure:Material distributing cap and connecting portion, wherein, the head of the material distributing cap is arc-shaped;The connecting portion is arranged on the wing plate of the material distributing cap, and is connected with furnace wall, and the material distributing cap is fixed on the furnace wall.The present invention not only serves certain dividing equally to fine coal and acted on by setting distributing structure in neutral area, and the decline process to fine coal serves certain cushioning effect, while alleviates fine coal and consume situation to the equipment collided and the collision of body of heater;Increase the furnace outage time of neutral area fine coal;In addition so that neutral area fine coal can effectively be divided equally and occur to contact well with radiant tube, enhance the pyrolysis effect of the part fine coal so that product quality is guaranteed.
Description
Technical field
The present invention relates to pyrolytic technique field, and in particular to a kind of pulverized coal pyrolysis stove with homocline structure.
Background technology
Heat transfer(Or make heat biography, heat transfer)It is a physical phenomenon physically, is heat energy from high temperature to low temperature part
The process of transfer, heat transfer have three kinds of modes:Heat transfer, thermal convection current and heat radiation;Wherein, heat transfer refers in material without relative position
In the case of shifting, heat energy transmission that interior of articles is occurred when there is the object of different temperatures or different temperatures directly to contact
Phenomenon;Convection heat transfer' heat-transfer by convection, also known as thermal convection current, refer to relative due to occurring between fluid each several part caused by the macroscopic motion of fluid
Displacement, cold fluid and hot fluid mutually blend caused heat transfer process;Heat radiation, it is a kind of form handle of object electromagnetic radiation
The heat transfer type that heat energy outwards distributes, it is carried out independent of any external condition, is heat transfer side maximally efficient in a vacuum
Formula.In without heat carrier radiant tube type fast pyrogenation equipment, falling particles material(Fine coal)It is heated to during whereabouts
Reaction temperature, its heating process are to be heated without heat carrier, and main heat transfer mode is heat transfer and heat radiation, and falling material is falling
During mainly conducted heat by heat radiation when not contacted with furnace wall or radiant tube, being heated when furnace wall or radiant tube are touched in whereabouts passes
Conduction heat transfer.
With reference to shown in Fig. 1 and 2, granule materials(Fine coal)Fall on radiant tube upper surface under directly or touch and wash away radiant tube quilt
Be heated to reaction temperature, so as to which pyrolytic reaction occur, during main heat transfer mode be heat transfer and heat radiation.Because body of heater is set
Meter feature, radiant tube increase the horizontal interval of regional area suddenly in burner hearth, and there is very big neutral area so that drops down onto this
The fine coal at place can not well collide with radiant tube and contact, and will bring problems with:1st, due to fine coal can not well with
Radiant tube collides, and falling speed can not obtain the buffering of radiant tube so that fine coal is accelerated by the time of heating furnace, remote small
In the optimal furnace outage time of fine coal(5~10s);Secondly as can not be contacted with radiant tube, fine coal heating effect becomes in the region
Difference, finally pyrolytic reaction can not sufficiently be carried out, product quality is bad;2nd, because fine coal can not be sent out well with radiant tube
Raw making contact, falling speed can not be buffered effectively, and decrease speed accelerates, and the equipment and body of heater collided is impacted and made
With increase, the consume of equipment and body of heater is increased.
The content of the invention
The present invention is in view of the shortcomings of the prior art, it is proposed that a kind of pulverized coal pyrolysis stove with homocline structure, by neutral gear
Distributing structure is set in area, certain dividing equally not only is served to fine coal and is acted on, and the decline process to fine coal serves one
Fixed cushioning effect, while alleviate fine coal and situation is consumed to the equipment collided and the collision of body of heater;Increase neutral area powder
The furnace outage time of coal, make it within optimal furnace outage time;In addition so that neutral area fine coal can by effectively divide equally and with radiation
Contact well occurs for pipe, enhances the pyrolysis effect of the part fine coal so that product quality is guaranteed.
In order to solve the above technical problems, the technical scheme that the present invention takes is:
The present invention proposes a kind of pulverized coal pyrolysis stove with homocline structure, including:Body of heater, radiant tube and homocline structure, wherein, it is more
The layer radiant tube is arranged in furnace chamber, and forms neutral area, and the homocline structure setting extends the sky in the neutral area
The furnace outage time of fine coal, the homocline structure include in shelves area:Material distributing cap and connecting portion, wherein, the head of the material distributing cap is
Arc-shaped, for reducing the impact wear of fine coal and preventing fine coal from accumulating;The connecting portion is arranged at the wing plate of the material distributing cap
On, and be connected with furnace wall, the material distributing cap is fixed on the furnace wall.
Further, every layer of radiant tube is multiple that the neutral area is the horizontal interval area of every layer of radiant tube
Domain.
Further, the width B of the material distributing cap is L/8<B<L/3, wherein, L represents the level of adjacent two radiant tube
Interval, enhancing sub-material effect and the impact wear for reducing fine coal.
Further, the main body of the material distributing cap is taper, and the cone angle of the taper is 40-120 °, prevents fine coal from accumulating;
The material distributing cap has certain interval with the furnace wall in the longitudinal direction, is easily installed and avoids shadow caused by high-temperature expansion
Ring.
Further, the homocline structure also includes:Gusset, it is welded with the material distributing cap, and the gusset with it is described
Material distributing cap is heat resisting steel material.
Further, the gusset on the length direction of the material distributing cap uniformly at intervals, spacing 0.2-0.6m.
Further, the connecting portion is angle steel, and the angle steel is arranged at two on the length direction of the material distributing cap
Port position, the angle steel is connected on the wing plate of port both sides.
Further, the wing plate of the angle steel and material distributing cap is bolted, and the angle steel is connected with furnace wall by bolt
Connect.
Further, the angle steel is provided with the oval bolt hole being engaged with the bolt, is easily installed and avoids height
Influenceed caused by temperature expansion.
Further, feed opening, discharging opening and pyrolysis oil gas vent are provided with the body of heater, wherein, from the blanking
Mouth charging, from the discharge hole for discharge, it is pyrolyzed caused pyrolysis oil gas and is pyrolyzed oil gas vent discharge through described.
Beneficial effects of the present invention comprise at least:
1st, the decrease speed of neutral area fine coal material has been buffered, has mitigated and even avoids setting to crashing into the material dropping process
Standby erosive wear, so as to improve the bulk life time of pyrolysis oven;
2nd, neutral area fine coal material contact material distributing cap after, by material distributing cap divide equally to both sides slide, can make material well with radiation
Pipe is in contact, and strengthens its heat-transfer effect;
3rd, slid after fine coal material contact material distributing cap, avoid material from influenceing product quality and bonus point after being accumulated in material distributing cap upper surface
Expect the situation of cap load;
4th, the furnace outage time of fine coal material in neutral area is extended, strengthens the diabatic process of neutral area material, so that having leisure
Material pyrolytic reaction is strengthened in shelves area, and obtained product quality is more preferable;
5th, distributing structure absorbing thermal expansion of the present invention, will not be brought by high-temperature expansion is influenceed.
Brief description of the drawings
Fig. 1 is the pyrolysis oven structural representation of prior art.
Fig. 2 is Fig. 1 partial enlarged drawing.
Fig. 3 is the structural representation of pulverized coal pyrolysis stove of the present invention.
Fig. 4 is Fig. 3 partial enlarged drawing.
Fig. 5 is homocline structural representation of the present invention.
Fig. 6 is Fig. 5 A to enlarged drawing.
Wherein, body of heater 1;Burner hearth 2;Angular cap 3;Radiant tube 4;Fine coal fall trajectory 5;Material distributing cap 6;Gusset 7;Angle steel 8;Stove
Wall 9.
Embodiment
In order that those skilled in the art more fully understand technical scheme, below in conjunction with specific embodiment pair
The present invention is described in further detail.The embodiments described below is exemplary, is only used for explaining the present invention, and can not be managed
Solve as limitation of the present invention.Unreceipted particular technique or condition in embodiment, according to described by document in the art
Technology or condition are carried out according to product description.
According to an embodiment of the invention, Fig. 1 is the pyrolysis oven structural representation of prior art, and Fig. 2 is Fig. 1 partial enlargement
Figure, with reference to shown in Fig. 1 and 2, radiant tube described in multilayer has being arranged in the furnace chamber of spacing, and forms neutral area, can be with
Understand, every layer of radiant tube is multiple, and the neutral area is the horizontal interval region of every layer of radiant tube, i.e., described
Neutral area is the region for being fitted without the radiant tube;Be provided with angular cap at the top of each radiant tube, for sub-material and
Reduce the impulsive force of fine coal.Due to Proper Design feature, radiant tube increases the horizontal interval of regional area suddenly in burner hearth, deposits
In the very big neutral area so that the fine coal dropped down onto herein can not collide well with radiant tube to be contacted, and will be brought
Problems with:1st, because fine coal can not collide with radiant tube well, falling speed can not obtain the buffering of radiant tube, make
Obtain fine coal by the time of heating furnace to accelerate, much smaller than the optimal furnace outage time of fine coal(5~10s);Secondly as can not be with radiation
Pipe contacts, and fine coal heating effect is deteriorated in the region, finally pyrolytic reaction can not sufficiently be carried out, product quality is bad;
2nd, contacted because fine coal can not collide well with radiant tube, falling speed can not be buffered effectively, decrease speed
Accelerate, the equipment and body of heater percussion collided is increased, increases the consume of equipment and body of heater.
According to an embodiment of the invention, Fig. 3 is the structural representation of pulverized coal pyrolysis stove of the present invention, and the part that Fig. 4 is Fig. 3 is put
Big figure, shown in reference picture 3 and 4, the pulverized coal pyrolysis stove of the present invention with homocline structure, including:Body of heater, radiant tube and homocline knot
Structure, wherein, the homocline structure setting is in the neutral area, and more specifically, due to Proper Design feature, radiant tube is in burner hearth
The horizontal interval of regional area increases suddenly, there is the very big neutral area, when central region presence is very big in burner hearth
During neutral area, it is preferred that by homocline structure setting of the present invention in the middle part neutral area of every layer of radiant tube, the neutral gear
After area's fine coal material contact material distributing cap, divided equally by material distributing cap to both sides and slide, material can be made to be in contact well with radiant tube,
Strengthen its heat-transfer effect;Extend the furnace outage time of fine coal in the neutral area simultaneously, strengthen the diabatic process of neutral area material,
So that material pyrolytic reaction is strengthened in neutral area, obtained product quality is more preferable.
According to some embodiments of the present invention, feed opening, discharging opening and pyrolysis oil gas vent are provided with the body of heater, its
In, fed from the feed opening, from the discharge hole for discharge, be pyrolyzed caused pyrolysis oil gas through the pyrolysis oil gas vent row
Go out.
According to an embodiment of the invention, Fig. 5 is homocline structural representation of the present invention, and the A that Fig. 6 is Fig. 5 is to enlarged drawing, reference
Shown in Fig. 5 and 6, the homocline structure includes:Material distributing cap, connecting portion and gusset, wherein, the material distributing cap in the longitudinal direction with
The furnace wall has certain interval, has installation surplus and avoids influenceing caused by the material distributing cap high-temperature expansion.
According to an embodiment of the invention, shown in reference picture 6, the head of material distributing cap of the present invention is arc-shaped, both can be with
Reduce the impact wear of fine coal effectively can prevent coal dust from accumulating again;The main body of the material distributing cap is taper, the taper
Cone angle is 40-120 °, and the angle is relevant with the angle of repose of fine coal material, ensures that fine coal is not accumulated on the material distributing cap.
More specifically, the present invention rationally designs the width B of the material distributing cap, and the width B is preferably L/8<B<L/3,
Wherein, L represents the horizontal interval of adjacent two radiant tube;The width B is too small, will influence the using effect of material distributing cap so that
Divide effect undesirable so that fine coal can not be dispersed on radiant tube to both sides well;The width B is too big, can increase whereabouts
Impact of the material to material distributing cap, material distributing cap itself load is aggravated, influences the life-span.
According to an embodiment of the invention, shown in reference picture 5 and 6, connecting portion of the present invention is angle steel, and the angle steel is set
In connecting the angle steel in two port positions on the length direction of the material distributing cap, the wing plate of port both sides, more specifically,
The wing plate of the angle steel and material distributing cap is bolted, and the angle steel is bolted with furnace wall, and the material distributing cap is consolidated
Due on the furnace wall.
According to some embodiments of the present invention, it is contemplated that high-temperature expansion and installation surplus, be provided with the angle steel and institute
State the oval bolt hole that bolt is engaged.
According to an embodiment of the invention, shown in reference picture 6, the gusset welds with the material distributing cap, and the gusset is in institute
State on the length direction of material distributing cap uniformly at intervals, spacing is preferably 0.2-0.6m, for being played by force to the intensity of the material distributing cap
Change acts on, and extends the service life of material distributing cap.
According to some embodiments of the present invention, the gusset and the material distributing cap are heat resisting steel material, and the sub-material
The steel plate thickness of cap leaves corrosive wear surplus.
Inventor has found that the present invention has buffered the decrease speed of neutral area fine coal material, mitigates and even avoids the material
To crashing into the erosive wear of equipment in dropping process, so as to improve the bulk life time of pyrolysis oven;And neutral area fine coal thing
After material contact material distributing cap, divided equally by material distributing cap to both sides and slide, material can be made to be in contact well with radiant tube, strengthen its biography
Thermal effect;And slid after fine coal material contact material distributing cap, avoid material from influenceing product quality after being accumulated in material distributing cap upper surface
With the situation for adding material distributing cap load;The furnace outage time of fine coal material in neutral area is extended simultaneously, strengthens neutral area material
Diabatic process, so that material pyrolytic reaction is strengthened in neutral area, obtained product quality is more preferable;In addition, sub-material of the present invention
Structure absorbing thermal expansion, will not be brought by high-temperature expansion is influenceed.
In the present invention, unless otherwise clearly defined and limited, the term such as term " connected ", " connection " should do broad sense reason
Solution, for example, it may be fixedly connected or be detachably connected, or integrally;Can be mechanical connection or electricity
Connection;Can be joined directly together, can also be indirectly connected by intermediary, can be two element internals connection or two
The interaction relationship of element.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be any
Combined in an appropriate manner in individual or multiple embodiments or example.In addition, in the case of not conflicting, the technology of this area
Different embodiments or example and the feature of different embodiments or example described in this specification can be combined by personnel
And combination.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification, meanwhile, for those of ordinary skill in the art, the think of according to the application
Think, in specific embodiments and applications there will be changes.
Claims (10)
1. a kind of pulverized coal pyrolysis stove with homocline structure, including:Body of heater, radiant tube and homocline structure, wherein, radiation described in multilayer
Pipe is arranged in furnace chamber, and forms neutral area, it is characterised in that
The homocline structure setting extends the furnace outage time of fine coal in the neutral area, the homocline structure in the neutral area
Including:Material distributing cap and connecting portion, wherein,
The head of the material distributing cap is arc-shaped, for reducing the impact wear of fine coal and preventing fine coal from accumulating;The connecting portion
It is arranged on the wing plate of the material distributing cap, and is connected with furnace wall, the material distributing cap is fixed on the furnace wall.
2. pulverized coal pyrolysis stove according to claim 1, it is characterised in that every layer of radiant tube is multiple, the neutral gear
Area is the horizontal interval region of every layer of radiant tube.
3. pulverized coal pyrolysis stove according to claim 2, it is characterised in that the width B of the material distributing cap is L/8<B< L
/ 3, wherein, L represents the horizontal interval of adjacent two radiant tube, enhancing sub-material effect and the impact wear for reducing fine coal.
4. pulverized coal pyrolysis stove according to claim 3, it is characterised in that the main body of the material distributing cap is taper, the cone
The cone angle of shape is 40-120 °, prevents fine coal from accumulating;The material distributing cap has certain interval with the furnace wall in the longitudinal direction,
It is easily installed and avoids to influence caused by high-temperature expansion.
5. pulverized coal pyrolysis stove according to claim 1, it is characterised in that the homocline structure also includes:Gusset, itself and institute
Material distributing cap welding is stated, and the gusset and the material distributing cap are heat resisting steel material.
6. pulverized coal pyrolysis stove according to claim 5, it is characterised in that length direction of the gusset in the material distributing cap
On uniformly at intervals, spacing 0.2-0.6m.
7. pulverized coal pyrolysis stove according to claim 1, it is characterised in that the connecting portion is angle steel, and the angle steel is set
In connecting the angle steel in two port positions on the length direction of the material distributing cap, the wing plate of port both sides.
8. pulverized coal pyrolysis stove according to claim 7, it is characterised in that the wing plate of the angle steel and material distributing cap passes through bolt
Connection, the angle steel are bolted with furnace wall.
9. pulverized coal pyrolysis stove according to claim 8, it is characterised in that the angle steel is provided with and is engaged with the bolt
Oval bolt hole, be easily installed and avoid to influence caused by high-temperature expansion.
10. pulverized coal pyrolysis stove according to claim 1, it is characterised in that feed opening, discharging opening are provided with the body of heater
With pyrolysis oil gas vent, wherein, fed from the feed opening, from the discharge hole for discharge, be pyrolyzed caused by pyrolysis oil gas through institute
State pyrolysis oil gas vent discharge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201711289719.1A CN107841328A (en) | 2017-12-08 | 2017-12-08 | A kind of pulverized coal pyrolysis stove with homocline structure |
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CN201711289719.1A CN107841328A (en) | 2017-12-08 | 2017-12-08 | A kind of pulverized coal pyrolysis stove with homocline structure |
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CN201711289719.1A Pending CN107841328A (en) | 2017-12-08 | 2017-12-08 | A kind of pulverized coal pyrolysis stove with homocline structure |
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Citations (5)
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CN105419843A (en) * | 2015-12-29 | 2016-03-23 | 北京神雾环境能源科技集团股份有限公司 | Moving bed catalysis rapid pyrolysis reactor |
CN105861080A (en) * | 2016-05-05 | 2016-08-17 | 北京神雾环境能源科技集团股份有限公司 | Rapid catalytic pyrolysis system of biomass downward bed and biomass pyrolysis method |
CN106479545A (en) * | 2016-12-02 | 2017-03-08 | 北京神雾环境能源科技集团股份有限公司 | A kind of moving bed pyrolysis reactor |
CN106753487A (en) * | 2016-12-02 | 2017-05-31 | 北京神雾环境能源科技集团股份有限公司 | A kind of heat storage type pyrolysis reactor |
CN207659392U (en) * | 2017-12-08 | 2018-07-27 | 北京神雾电力科技有限公司 | A kind of pulverized coal pyrolysis stove with homocline structure |
-
2017
- 2017-12-08 CN CN201711289719.1A patent/CN107841328A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105419843A (en) * | 2015-12-29 | 2016-03-23 | 北京神雾环境能源科技集团股份有限公司 | Moving bed catalysis rapid pyrolysis reactor |
CN105861080A (en) * | 2016-05-05 | 2016-08-17 | 北京神雾环境能源科技集团股份有限公司 | Rapid catalytic pyrolysis system of biomass downward bed and biomass pyrolysis method |
CN106479545A (en) * | 2016-12-02 | 2017-03-08 | 北京神雾环境能源科技集团股份有限公司 | A kind of moving bed pyrolysis reactor |
CN106753487A (en) * | 2016-12-02 | 2017-05-31 | 北京神雾环境能源科技集团股份有限公司 | A kind of heat storage type pyrolysis reactor |
CN207659392U (en) * | 2017-12-08 | 2018-07-27 | 北京神雾电力科技有限公司 | A kind of pulverized coal pyrolysis stove with homocline structure |
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