CN107841329A - A kind of pulverized coal pyrolysis stove with homocline and bearing structure - Google Patents
A kind of pulverized coal pyrolysis stove with homocline and bearing structure Download PDFInfo
- Publication number
- CN107841329A CN107841329A CN201711289720.4A CN201711289720A CN107841329A CN 107841329 A CN107841329 A CN 107841329A CN 201711289720 A CN201711289720 A CN 201711289720A CN 107841329 A CN107841329 A CN 107841329A
- Authority
- CN
- China
- Prior art keywords
- material distributing
- distributing cap
- homocline
- pulverized coal
- bearing structure
- 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.)
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Links
- 239000003245 coal Substances 0.000 title claims abstract description 52
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 91
- 230000007935 neutral effect Effects 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
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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 and bearing structure, mainly include:Body of heater, radiant tube and homocline and bearing structure, wherein, radiant tube is arranged in furnace chamber described in multilayer, and forms neutral area, and the homocline and bearing structure are arranged at the neutral area, and the homocline and bearing structure include:Supporting part, material distributing cap and connecting portion, wherein, the supporting part is horizontally disposed;The head of the material distributing cap is arc-shaped, and the bottom of the material distributing cap is arranged on the supporting part;The connecting portion is fixed on the furnace wall, and is connected by both ends of the bearing pin respectively with the supporting part, and the supporting part is fixed on the furnace wall.The present invention serves respectively effect and cushioning effect to fine coal, alleviates fine coal and consume situation to the equipment collided and the collision of body of heater by setting sub-material and bearing structure in neutral area;Body of heater is strengthened to furnace maneuver pressure tolerance simultaneously, has the function that to stablize body of heater.
Description
Technical field
The present invention relates to pyrolytic technique field, and in particular to a kind of pulverized coal pyrolysis stove with homocline and bearing structure.
Background technology
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;3rd, neutral area is due to no radiation tubular construction so that bears in body of heater the part
The reduced capability of portion's operating pressure, so as to reduce ability to bear of the whole body of heater to internal operating pressures.
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 and bearing structure, passes through
Sub-material and bearing structure are set in neutral area, certain dividing equally not only is served to fine coal and is acted on, and to the decline of fine coal
Process serves certain cushioning effect, alleviates fine coal and consumes situation to the equipment collided and the collision of body of heater;Add simultaneously
Strong body of heater has the function that necessarily to stablize body of heater to furnace maneuver pressure tolerance;In addition, increase neutral area fine coal
Furnace outage time, make it within optimal furnace outage time;Neutral area fine coal is enabled effectively to be divided equally and sent out with radiant tube simultaneously
Raw contact well, enhance 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 and bearing structure, including:Body of heater, radiant tube and homocline and pressure-bearing
Structure, wherein, radiant tube is arranged in furnace chamber described in multilayer, and forms neutral area, and the homocline and bearing structure are arranged at institute
Neutral area is stated, the homocline and bearing structure include:Supporting part, material distributing cap and connecting portion, wherein, supporting part edge level side
To setting;The head of the material distributing cap is arc-shaped, and the bottom of the material distributing cap is arranged on the supporting part;The connecting portion
It is fixed on the furnace wall, and is connected by both ends of the bearing pin respectively with the supporting part, the supporting part is fixed on described
On 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/4<B<2 L/3, wherein, L represents the water of adjacent two radiant tube
Flat 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 and bearing structure also include:Gusset, it is welded on the material distributing cap, and the muscle
Plate on the length direction of the material distributing cap uniformly at intervals, spacing 0.2-0.6m.
Further, the supporting part is the round steel that caliber is 200-400mm, and its both ends is respectively equipped with and the bearing pin phase
The pin shaft hole of matching, is additionally provided with backing plate when being connected by bearing pin, strengthen the fastening effect of bearing pin.
Further, the bottom of the material distributing cap is welded on the round steel.
Further, the connecting portion is angle steel, and the angle steel is bolted on furnace wall, and institute on the angle steel
The perforate for having connecting portion is slotted hole, is easily installed and avoids to influence caused by high-temperature expansion.
Further, the material distributing cap, gusset and round steel are heat resisting steel material.
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 material has been buffered, has mitigated and even avoids washing away to crashing into equipment in material dropping process
Abrasion, so as to improve the bulk life time of stove;
2nd, after neutral area material contact material distributing cap, divided equally by material distributing cap to both sides and slide, material can be made to be sent out well with radiant tube
Raw contact, strengthens its heat-transfer effect;
3rd, slid after material contact material distributing cap, avoid material from influenceing product quality and plus material distributing cap after being accumulated in material distributing cap upper surface
The situation of load;
4th, the furnace outage time of material in neutral area is extended, strengthens the diabatic process of neutral area material, so that neutral area
Interior material pyrolytic reaction is strengthened, and obtained product quality is more preferable;
5th, round steel structure has shared the operating pressure of part stove interior, alleviates body of heater load, has certain stable body of heater
Effect so that body of heater bearing capacity is strengthened, and structure is more stable.
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 of the present invention and bearing structure scheme of installation.
Fig. 6 is Fig. 5 A-A to sectional view.
Fig. 7 is Fig. 5 C portions enlarged drawing.
Wherein, body of heater 1;Fine coal fall trajectory 2;Angular cap 3;Radiant tube 4;Material distributing cap 5;Round steel 6;Angle steel 7;Bearing pin 8;Stove
Wall 9;Gusset 10;Backing plate 11.
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, radiant tube tool is spaced with reference to shown in Fig. 1 and 2, described in multilayer is arranged in furnace chamber, and forms neutral area, it is possible to understand that
, the neutral area is the horizontal interval region of every layer of radiant tube, i.e., described neutral area is to be fitted without the radiation
The region of pipe;Every layer of radiant tube is multiple, angular cap is provided with the top of each radiant tube, for sub-material and reduction
The impulsive force of fine coal.Due to Proper Design feature, radiant tube increases the horizontal interval of regional area suddenly in burner hearth, there is
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 following
Problem:1st, because fine coal can not collide with radiant tube well, falling speed can not obtain the buffering of radiant tube so that powder
Coal is accelerated by the time of heating furnace, much smaller than the optimal furnace outage time of fine coal(5~10s);Secondly as it can not be connect with radiant tube
Touch, fine coal heating effect is deteriorated in the region, finally pyrolytic reaction can not sufficiently be carried out, product quality is bad;2nd, by
It can not well collide and contact with radiant tube in fine coal, falling speed can not be buffered effectively, and decrease speed accelerates,
The equipment and body of heater percussion collided is increased, increases the consume of equipment and body of heater;3rd, neutral area is not due to radiating
Tubular construction so that the reduced capability of furnace interior operating pressure is born in the part, so as to reduce whole body of heater to built-in function
The ability to bear of pressure.
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 and bearing structure includes:Body of heater, radiant tube and
Homocline and bearing structure, the homocline and bearing structure are arranged at the neutral area, more specifically, due to Proper Design feature,
Radiant tube increases the horizontal interval of regional area suddenly in burner hearth, there is the very big neutral area, when middle part in burner hearth
When very big neutral area be present in region, it is preferred that homocline of the present invention and bearing structure are arranged at into every layer of radiant tube
Middle part neutral area, after neutral area fine coal material contact material distributing cap, divided equally by material distributing cap to both sides and slide, material can be made very
Good is in contact with radiant tube, strengthens 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 of the present invention and bearing structure scheme of installation, and Fig. 6 is Fig. 5 A-A
To sectional view, Fig. 7 is Fig. 5 C portions enlarged drawing, and shown in reference picture 5-7, homocline of the present invention and bearing structure include:Support
Portion, material distributing cap, connecting portion and gusset, wherein, the material distributing cap has certain interval with the furnace wall in the longitudinal direction, has
Surplus is installed and avoids influenceing caused by the material distributing cap high-temperature expansion.
According to an embodiment of the invention, shown in reference picture 5-7, round steel that the supporting part is, and it is horizontally disposed,
Its both ends is respectively equipped with the pin shaft hole to match with the bearing pin, and backing plate is additionally provided with when being connected by bearing pin, strengthens the tight of bearing pin
Gu effect.
According to some embodiments of the present invention, the present invention rationally designs the round steel, is preferably 200- by its caliber
400mm, caliber is too small then can not effectively to fix material distributing cap, also can not effectively bear stove interior operating pressure, influence the stove longevity
Life and sub-material effect;The too big homocline effect that can then influence material distributing cap of caliber, causes powder to accumulate, works together because own wt increases
Add so that stove load increases.
According to an embodiment of the invention, shown in reference picture 5 and 6, the bottom of the material distributing cap is welded on the supporting part,
The head of the material distributing cap is arc-shaped, can not only reduce the impact wear of fine coal but also effectively can prevent coal dust from accumulating;Institute
The main body for stating material distributing cap is taper, and the cone angle of the taper is 40-120 °, and the angle is relevant with the angle of repose of fine coal material, is protected
Card 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/4<B<2 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
Respectively effect is undesirable so that fine coal can not be dispersed on radiant tube to both sides well;The width B is too big, can increase down
Impact of the junk 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 7, the connecting portion is angle steel, and the angle steel is consolidated by bolt
It is scheduled on furnace wall, and is connected by both ends of the bearing pin respectively with the supporting part, the supporting part is fixed on the furnace wall.
According to some embodiments of the present invention, the perforate of all connecting portions is slotted hole on the angle steel, is easy to pacify
Fill and avoid to influence caused by high-temperature expansion.
According to an embodiment of the invention, shown in reference picture 5 and 6, the gusset is welded on the material distributing cap, and the muscle
Plate on the length direction of the material distributing cap uniformly at intervals, spacing 0.2-0.6m, for being played to the intensity of the material distributing cap
Invigoration effect, extend the service life of material distributing cap.
According to some embodiments of the present invention, the material distributing cap, gusset and round steel 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 material, mitigates and even avoids material dropping process
In to crashing into the erosive wear of equipment, so as to improve the bulk life time of stove;And after neutral area material contact material distributing cap, quilt
Material distributing cap is divided equally to be slid to both sides, material can be made to be in contact well with radiant tube, be strengthened its heat-transfer effect;Material connects simultaneously
Slid after touching material distributing cap, avoid material from influenceing product quality after being accumulated in material distributing cap upper surface and add the situation of material distributing cap load;
The furnace outage time of material in neutral area is extended, strengthens the diabatic process of neutral area material, so that material in neutral area
Pyrolytic reaction is strengthened, and obtained product quality is more preferable;In addition, round steel structure has shared the operating pressure of part stove interior, subtract
Light body of heater load, has the function that necessarily to stablize body of heater so that body of heater bearing capacity is strengthened, and structure is more stable.
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 and bearing structure, including:Body of heater, radiant tube and homocline and bearing structure, wherein,
Radiant tube is arranged in furnace chamber described in multilayer, and forms neutral area, it is characterised in that
The homocline and bearing structure are arranged at the neutral area, and the homocline and bearing structure include:Supporting part, material distributing cap and
Connecting portion, wherein,
The supporting part is horizontally disposed;
The head of the material distributing cap is arc-shaped, and the bottom of the material distributing cap is arranged on the supporting part;
The connecting portion is fixed on the furnace wall, and is connected by both ends of the bearing pin respectively with the supporting part, by the branch
Support part 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 1, it is characterised in that the width B of the material distributing cap is L/4<B<2 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 and bearing structure also include:Gusset,
It is welded on the material distributing cap, and the gusset on the length direction of the material distributing cap uniformly at intervals, spacing 0.2-
0.6m。
6. pulverized coal pyrolysis stove according to claim 5, it is characterised in that the supporting part is that caliber is 200-400mm's
Round steel, its both ends are respectively equipped with the pin shaft hole to match with the bearing pin, and backing plate is additionally provided with when being connected by bearing pin, strengthen bearing pin
Fastening effect.
7. pulverized coal pyrolysis stove according to claim 6, it is characterised in that the bottom of the material distributing cap is welded on the round steel
On.
8. pulverized coal pyrolysis stove according to claim 1, it is characterised in that the connecting portion is angle steel, and the angle steel passes through
It is bolted on furnace wall, and the perforate of all connecting portions is slotted hole on the angle steel, is easily installed and avoids high temperature
Influenceed caused by expansion.
9. pulverized coal pyrolysis stove according to claim 7, it is characterised in that the material distributing cap, gusset and round steel are heat-resisting
Steel material.
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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CN201711289720.4A CN107841329A (en) | 2017-12-08 | 2017-12-08 | A kind of pulverized coal pyrolysis stove with homocline and bearing structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201711289720.4A CN107841329A (en) | 2017-12-08 | 2017-12-08 | A kind of pulverized coal pyrolysis stove with homocline and bearing structure |
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Publication Number | Publication Date |
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CN107841329A true CN107841329A (en) | 2018-03-27 |
Family
ID=61664048
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CN201711289720.4A Pending CN107841329A (en) | 2017-12-08 | 2017-12-08 | A kind of pulverized coal pyrolysis stove with homocline and bearing structure |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203108355U (en) * | 2013-01-15 | 2013-08-07 | 东莞市慧达环保有限公司 | Pressure reducer of material storage system |
CN104747715A (en) * | 2014-07-07 | 2015-07-01 | 季永东 | Explosion-proof pressure storage tank with heating device |
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 |
CN107011928A (en) * | 2017-05-05 | 2017-08-04 | 神雾科技集团股份有限公司 | Fast pyrogenation stove |
CN207811673U (en) * | 2017-12-08 | 2018-09-04 | 北京神雾电力科技有限公司 | A kind of pulverized coal pyrolysis stove with homocline and bearing structure |
-
2017
- 2017-12-08 CN CN201711289720.4A patent/CN107841329A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN203108355U (en) * | 2013-01-15 | 2013-08-07 | 东莞市慧达环保有限公司 | Pressure reducer of material storage system |
CN104747715A (en) * | 2014-07-07 | 2015-07-01 | 季永东 | Explosion-proof pressure storage tank with heating device |
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 |
CN107011928A (en) * | 2017-05-05 | 2017-08-04 | 神雾科技集团股份有限公司 | Fast pyrogenation stove |
CN207811673U (en) * | 2017-12-08 | 2018-09-04 | 北京神雾电力科技有限公司 | A kind of pulverized coal pyrolysis stove with homocline and bearing structure |
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