CN107841328A - A kind of pulverized coal pyrolysis stove with homocline structure - Google Patents

A kind of pulverized coal pyrolysis stove with homocline structure Download PDF

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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
Application number
CN201711289719.1A
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Chinese (zh)
Inventor
彭远旺
林景龙
吴道洪
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Beijing Shenwu Power Technology Co Ltd
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Beijing Shenwu Power Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Shenwu Power Technology Co Ltd filed Critical Beijing Shenwu Power Technology Co Ltd
Priority to CN201711289719.1A priority Critical patent/CN107841328A/en
Publication of CN107841328A publication Critical patent/CN107841328A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/04Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B31/00Charging devices

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  • 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

A kind of pulverized coal pyrolysis stove with homocline structure
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.
CN201711289719.1A 2017-12-08 2017-12-08 A kind of pulverized coal pyrolysis stove with homocline structure Pending CN107841328A (en)

Priority Applications (1)

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CN201711289719.1A CN107841328A (en) 2017-12-08 2017-12-08 A kind of pulverized coal pyrolysis stove with homocline structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711289719.1A CN107841328A (en) 2017-12-08 2017-12-08 A kind of pulverized coal pyrolysis stove with homocline structure

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Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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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