CN107815327A - A kind of superfine powder rapid pyrolysis apparatus - Google Patents
A kind of superfine powder rapid pyrolysis apparatus Download PDFInfo
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- CN107815327A CN107815327A CN201711190304.9A CN201711190304A CN107815327A CN 107815327 A CN107815327 A CN 107815327A CN 201711190304 A CN201711190304 A CN 201711190304A CN 107815327 A CN107815327 A CN 107815327A
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- heat accumulation
- radiant tube
- accumulation type
- type radiant
- heater
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Classifications
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- 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
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to a kind of superfine powder rapid pyrolysis apparatus, including：Body of heater and heat accumulation type radiant tube, wherein, the heat accumulation type radiant tube is vertically arranged at the inner chamber of the body of heater, and the heat accumulation type radiant tube includes：Center heat accumulation type radiant tube and circumferential layer heat accumulation type radiant tube, wherein, the center heat accumulation type radiant tube is arranged at the middle part of the inner chamber, and the circumferential layer heat accumulation type radiant tube is arranged circumferentially about around the center heat accumulation type radiant tube, and the circumferential layer heat accumulation type radiant tube includes：More heat accumulation type radiant tubes, adjacent two heat accumulation type radiant tubes have identical center of circle angle.The present invention can efficient process superfine powder coal, can effectively handle the coal of glutinous viscosity easily coking, widen the adaptability of coal.
Description
Technical field
The invention belongs to coal chemical industry, fossil fuel pyrolytic technique field, is related to a kind of superfine powder rapid pyrolysis apparatus,
To produce tar, pyrolysis gas and semicoke.
Background technology
The energy resource structure present situation in China is rich coal, oil-poor, gas, world today's petroleum resources gradually decrease less, increasingly deficient,
China's petroleum resources shortage is particularly acute, and substantial amounts of petroleum resources relies on import.The deficient serious China that governs of petroleum resources passes through
Ji and social development, while the burning of a large amount of fossil fuels, bring serious environmental problem, such as dust, PM2.5, acid rain, temperature again
Room gas etc.；Coal liquifaction, coal gas technology, pyrolysis, gasification, liquefaction technology etc. are greatly developed, on the one hand can effectively alleviate me
State's petroleum resources shortage, the poverty-stricken situation of heavy dependence import；On the other hand the utilization of the fossil fuels such as coal is reduced, can be effective
Solves problem of environmental pollution.At present, to realize the high-efficiency cleaning trans-utilization of the carbon-containing fuels such as low-order coal, developed a variety of comprehensive
Coal chemical technology is closed, fine coal fast pyrolysis technology is exactly one of them.The more existing pyrolytic technique phase of fine coal fast pyrolysis technology
Than solving the unserviceable problem of granular material, fine coal fast pyrolysis technology mainly has gas heat carrier and solid thermal carriers
Two kinds of mode of heatings, but the type of furnace using gas as heat carrier, because condensate recovery system is huge, pyrolysis gas calorific value is low, tar yield
Low problem, it is difficult to which further genralrlization is demonstrated；, then there is raw material in the type of furnace using solid as heat carrier and heat carrier uniformly mixes,
The problems such as separation, and limit it and further develop.
Existing heat accumulating type fast pyrogenation stove, as thermal source, has accomplished that temperature can be controlled individually using heat accumulation type radiant tube
Temperature, energy realization device trouble-free operation, but yet have defect, such as selected coal is limited in scope, and can only choose long flame
Coal, lignite etc. do not cohere coal, and to the bad adaptability of the high coal for sticking viscosity, caking coal is more easy to coking, coking meeting under high temperature
Make the reduction of the pyrolysis efficiency of furnace, shorten pyrolysis oven service life；Simultaneously because the radiant tube in existing heat accumulating type fast pyrogenation stove is general
All over using lateral arrangement, radiant tube quantity is more, and coking is easily into lime-ash bulk, if coking fuses into bulk, because gravity from
Top is fallen, and can be fallen and be pounded the radiant tube of arranged beneath, not only influences whether existing Uniformity of Temperature Field, can also cause to add
The impact wear of acute radiant tube, long-play bring potential safety hazard there is a possibility that radiant tube gas leakage；Other existing pyrolysis oven is not
Energy pressure-bearing etc., equipment is caused to take up an area big, the problems such as pyrolysis gas and char yeild are low.
The content of the invention
The present invention is in view of the shortcomings of the prior art, it is proposed that and a kind of superfine powder rapid pyrolysis apparatus, the apparatus structure is simple,
It is easy for installation, it is the fast pyrogenation type of furnace for being capable of efficient process superfine powder coal, can effectively handles the easily coking of glutinous viscosity
Coal, widen the adaptability of coal；Meanwhile reduce the usage quantity of heat accumulation type radiant tube, reduce manual operation, plant failure
Rate is low, using radiant tube reasonable Arrangement mode, the effective uniform temperature fields ensured in stove；In addition, the semicoke after fast pyrogenation
Available for the raw material of boiler of power plant, solve the processing problem of semicoke, by Proper Design into after pressurized equipment, add semicoke production
Rate；And after pressurizeing, gas pressure rise, volume is reduced, it is possible to is accomplished equipment miniaturization, is considerably reduced follow-up
The flow of tail gas clean-up technique, reduce equipment and technique cost.
It is at least to solve one of above-mentioned technical problem, the technical scheme that the present invention takes is：
The present invention proposes a kind of superfine powder rapid pyrolysis apparatus, including：Body of heater and heat accumulation type radiant tube, wherein,
The heat accumulation type radiant tube is vertically arranged at the inner chamber of the body of heater, and the heat accumulation type radiant tube includes：Center
Heat accumulation type radiant tube and circumferential layer heat accumulation type radiant tube, wherein, the center heat accumulation type radiant tube is arranged in the inner chamber
Portion, the circumferential layer heat accumulation type radiant tube is arranged circumferentially about around the center heat accumulation type radiant tube, and the circumferential layer accumulation of heat
Formula radiant tube includes：More heat accumulation type radiant tubes, there is 15 ° -60 ° of center of circle angle per adjacent two heat accumulation type radiant tubes.
Further, in addition to：Material inlet, pyrolysis gas outlet and the outlet of taper semicoke, wherein, the material inlet is set
The top of the body of heater is placed in, the pyrolysis gas outlet is arranged in the middle part of sliding channel of the body of heater, the taper semicoke outlet
It is arranged at the bottom of the body of heater.
Further, one end of the heat accumulation type radiant tube is arranged at the material inlet, and the other end is arranged on described
Taper semicoke exit, it is easy to control to light a fire.
Further, the heat accumulation type radiant tube is straight type heat accumulation type radiant tube；The body of heater is cylinder, and its height is
2-10m, residence time of the material in the body of heater are more than 2s.
Further, the radius for the circle that the circumferential layer heat accumulation type radiant tube is formed is r, and the radius of the body of heater is R, its
In, 1/4<r/R<4/5.
Further, the number of plies of the circumferential layer heat accumulation type radiant tube is 1-10 layers, and the spacing distance between every layer is equal.
Further, the number of plies of the circumferential layer heat accumulation type radiant tube is 1-3 layers.
Further, the center of circle angle is identical.
Further, the external diameter of the center heat accumulation type radiant tube is 10-40cm, the circumferential layer heat accumulation type radiant tube
External diameter is 10-60cm.
Further, the external diameter of the circumferential layer heat accumulation type radiant tube is the 1- of the external diameter of the center heat accumulation type radiant tube
1.5 again.
Beneficial effects of the present invention comprise at least：
1）The present invention is easy for installation to be a kind of simple in construction, is capable of the fast pyrogenation type of furnace of efficient process superfine powder coal；
2）The present invention can handle the coal of glutinous viscosity easily coking, widen the adaptability of coal；
3）The present invention reduces the quantity of heat accumulation type radiant tube, reduces manual operation, plant failure rate is low, reasonable using radiant tube
Arrangement, the effective uniform temperature fields ensured in stove；
4）Proper Design of the present invention is reduced into pressure resistant vessel, gas pressure rise, volume so that equipment miniaturization, is greatly subtracted
Lack the flow of follow-up tail gas clean-up technique, reduce equipment and technique cost；
5）The present invention is arranged using rational vertical tube, the wear extent of lower end radiant tube is reduced to almost nil, is reduced equipment
Maintenance cost, increase service life of equipment, bring economic benefit；
6）The coal that the present invention uses has a duff kind between the mesh of 100 mesh -200, the stop in stove at high temperature at fine breeze
Time is very short, and pyrolytic reaction is just quickly completed in very short height, reduces body of heater height.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is apparatus of the present invention front view.
Fig. 3 is apparatus of the present invention side view.
Fig. 4 is heat accumulation type radiant tube arrangement figure of the present invention.
Wherein, body of heater 1, material inlet 101, pyrolysis gas outlet 102, taper semicoke outlet 103, center heat accumulation type radiant tube
2nd, circumferential layer heat accumulation type radiant tube 3.
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 apparatus of the present invention structural representation, and Fig. 2 is apparatus of the present invention front view, figure
3 be apparatus of the present invention side view, and shown in reference picture 1-3, device of the present invention includes：Body of heater, material inlet, pyrolysis gas outlet
With taper semicoke outlet and heat accumulation type radiant tube, wherein, the material inlet is arranged at the top of the body of heater, the pyrolysis gas
Outlet is arranged in the middle part of sliding channel of the body of heater, and the taper semicoke outlet is arranged at the bottom of the body of heater.
According to some embodiments of the present invention, semicoke outlet of the present invention is preferably taper, and discharge velocity is fast, avoids
Caused semicoke is accumulated in stove, results in blockage.
According to some embodiments of the present invention, the cross section of body of heater of the present invention can be circular or square, be preferably
Circular cross section, its height are 2-10m, and residence time of the material in the body of heater is more than 2s；Apparatus of the present invention are fully examined
The reaction effect of material is under high pressure considered, the cross section of the body of heater is arranged into circle can bear bigger pressure, the present apparatus
Allowable stress be<0.5MPa, but according to material requirements, allowable stress can be properly increased；At ambient pressure, gas density
Constant, after being arranged to pressurized equipment, gas pressure rise, volume is reduced, equivalent to 1/5 of gas volume under normal pressure, so
Equipment miniaturization can be accomplished under identical treating capacity, considerably reduce the flow of follow-up tail gas clean-up technique, reduction is set
Standby and technique cost.
According to some embodiments of the present invention, pyrolysis yield of the furnace pressure to coal has an impact, pressure increase tar yield
Reduce, semicoke and the increase of pyrolysis gas yield, more semicoke may be selected pneumatic conveying mode and is sent into boiler of power plant as raw material, use
Generated electricity in boiler combustion, solve the outlet problem of pyrolysis char；Pressure increase simultaneously, not only char yeild increases, Er Qieqi
Intensity also improves, because volatile matter separates out difficulty, makes to act on reinforcement between liquid product, has developed thermal polycondensation reaction, this
Advantageously sold in the Geldart-D particle or be made outside moulded coal of semicoke.
According to an embodiment of the invention, shown in reference picture 1-3, heat accumulation type radiant tube of the present invention is vertically set
In the inner chamber of the body of heater, one end of the heat accumulation type radiant tube is arranged at the material inlet, and the other end is arranged on described
Taper semicoke exit, it is easy to control to light a fire.
According to an embodiment of the invention, Fig. 4 is heat accumulation type radiant tube arrangement figure of the present invention, described shown in reference picture 4
Heat accumulation type radiant tube includes：Center heat accumulation type radiant tube and circumferential layer heat accumulation type radiant tube, wherein, the center heat accumulating type radiation
Pipe is arranged at the middle part of the inner chamber, at the center of preferably described inner chamber.
According to an embodiment of the invention, shown in reference picture 4, circumferential layer heat accumulation type radiant tube of the present invention is in described
Heart heat accumulation type radiant tube is circumferentially evenly arranged, and the circumferential layer heat accumulation type radiant tube includes：More heat accumulation type radiant tubes, often
Adjacent two heat accumulation type radiant tubes have an identical center of circle angle α, and span is 15 ° -60 °, preferably 30 ° -60 °, α values
It is too small, it can not only make the increase of heat accumulation type radiant tube quantity, and local temperature rise is easily caused, cause temperature field uneven, α values
It is excessive, the inadequate phenomenon in temperature field can be caused to occur again.
According to some embodiments of the present invention, shown in reference picture 4, the half of the circle of the circumferential layer heat accumulation type radiant tube formation
Footpath is r, and the radius of the body of heater is R, wherein, 1/4<r/R<4/5, preferably 2/5<r/R<3/4, further preferred r/R are
1/2, suitable ratio makes temperature field in furnace evenly.
It is understood that when circumferential layer heat accumulation type radiant tube of the present invention is multilayer, the radius r of the circle of formation is
The radius of greatest circle.
,, can be in the constant bar of angle α to increase fine coal treating capacity shown in reference picture 4 according to some embodiments of the present invention
Under part, one layer, two layers or multilayer circumferential layer heat accumulation type radiant tube, the circumferential layer accumulation of heat are circumferentially added in the stove
The number of plies of formula radiant tube is 1-10 layers, preferably 1-3 layers, and the spacing distance between every layer of circumferential layer heat accumulation type radiant tube is equal,
It is to be understood that for example：When the circumferential layer heat accumulation type radiant tube is two layers, then the second layer circumferential layer heat accumulating type radiation
The interval of pipe and first layer circumferential layer heat accumulation type radiant tube is equal to the first layer circumferential layer heat accumulation type radiant tube and center accumulation of heat
The interval of formula radiant tube；When the circumferential layer heat accumulation type radiant tube is three layers, then the third layer circumferential layer heat accumulating type radiation
The interval of pipe and second layer circumferential layer heat accumulation type radiant tube is equal to the second layer circumferential layer heat accumulation type radiant tube and justified with first layer
The interval of perisphere heat accumulation type radiant tube is equal between the first layer circumferential layer heat accumulation type radiant tube and center heat accumulation type radiant tube
Every；When there is more numbers of plies, by that analogy.
According to some embodiments of the present invention, heat accumulation type radiant tube of the present invention is straight type heat accumulation type radiant tube, every
Heat accumulation type radiant tube can pass through the independent temperature control of gas control valve.
According to some embodiments of the present invention, the external diameter of center heat accumulation type radiant tube of the present invention is 10-40cm, preferably
For 15-30cm, the external diameter of the circumferential layer heat accumulation type radiant tube is 10-60cm, preferably 15-45cm, is being chosen in use, institute
State circumferential layer heat accumulation type radiant tube and take larger external diameter as far as possible, the external diameter of the circumferential layer heat accumulation type radiant tube stores for the center
1-1.5 times of the external diameter of hot type radiant tube so that temperature field around the circumferential layer heat accumulation type radiant tube is closer to the circle
The temperature on perisphere heat accumulation type radiant tube surface, it can reduce thermograde circumferentially, beneficial to the uniform and stable of temperature field.
According to some embodiments of the present invention, the present invention advantageously ensures that accumulation of heat by rational angle and state modulator
The uniform heat distribution that formula radiant tube provides, and can reduce the quantity of heat accumulation type radiant tube, increase treating capacity, and parameter is excessive and mistake
The small regional area that can all make heat accumulation type radiant tube overheats, and causes heat skewness.
According to an embodiment of the invention, the running of pyrolysis installation of the present invention specifically includes following steps.
（1）The material that body of heater is sent to by modes such as ton dress Bao Douti/risers through the dried fine coal of drier enters
Mouthful, dispersed pan feeding is carried out to material by the distributing device device above body of heater.
（2）Fine coal enters in stove from material inlet, and straight type heat accumulation type radiant tube, tube wall temperature profit have been evenly arranged in stove
With gas control valve control in 600-1200 DEG C of scope, in stove in stop 2-10s from top to bottom, fine coal is heated in stove
550-1100 DEG C, complete pyrolytic process.
According to some embodiments of the present invention, the temperature in temperature field can be adjusted in several ways in pyrolytic process, example
Such as, the radical of heat accumulation type radiant tube is adjusted；The number of plies of heat accumulation type radiant tube；Spacing between heat accumulation type radiant tube；It is each to store
The temperature of hot type radiant tube in itself.
（3）Caused pyrolysis gas is discharged by pyrolysis gas outlet, enters follow-up pyrolysis air purifying apparatus, caused pyrolysis
Semicoke exports discharge, the raw material available for boiler of power plant by the taper semicoke of pyrolysis furnace bottom.
According to some embodiments of the present invention, the present apparatus is simple in construction, easy for installation, can efficient process fine powder coal,
The adaptability of coal has been widened, the pyrolysis being specially adapted under hot conditions, such as heat accumulation type radiant tube temperature is heated to
At more than 1200 DEG C, in-furnace temperature can reach 1100 DEG C or so, and the producing cause of coking phenomenon is the ash deposition under molten state
On heating surface, the ash fusion point of quality raw materials coal is typically at 1250-1500 DEG C, and the ash fusion point of coal inferior is then less than 1100
DEG C, this coal inferior is just very easy to coking in pyrolytic process；And coking is easily into lime-ash bulk, if coking fuses into bulk
When, because gravity is fallen from top, it can fall and pound the heat accumulation type radiant tube of arranged beneath, not only influence whether existing temperature field
Uniformity, it can also cause to aggravate the impact wear of heat accumulation type radiant tube, long-play, easily make radiant tube gas leakage, bring peace
Full hidden danger.And the present apparatus will not also be carried out using vertical arrangement radiant tube mode even if normal coking to heat accumulation type radiant tube road
Impact, can guarantee that long-time safe operation.
More specifically, during long-play, during material is descending from the top to the bottom, speed is increasingly
Greatly, very big to the impact wear of heat accumulation type radiant tube when heat accumulation type radiant tube lateral arrangement, experiment shows, in material medium
For under Cr28Ni48w5 steel, 3-5mm particle for a long time during continuous operation, will reach more than 900 DEG C to the wear extent of steel
It is annual to 1-2.3mm, huge economic losses are caused, the present invention arranges solve the technical problem well using vertical tube, will
Wear extent reduction to lower end radiant tube is almost nil, reduces cost of equipment maintenance.
According to some embodiments of the present invention, strong adaptability of the present apparatus to caking coal：The cohesiveness of coal is that coal grain exists
Itself or inert substance can be bonded after isolation air heats（That is the material of soap-free emulsion polymeization power）Into the property of coke button；Coal is being pyrolyzed
During, typically through and softening, fuse, expand, solidify and shrink several stages.When temperature is equal to or higher than the softening point of coal
（Generally 315-350 DEG C）When, coal all softens plastic plastid, for caking coal, easily coheres itself or its within this range
There is coking by material in him, cause to occur in stove fluffy material, blocking, semicoke product can not blanking the problems such as, for the radiant tube of transverse direction
Arrangement, because material is directly contacted with radiant tube in material dropping process, the coking phenomenon of large area can make material
Blanking is obstructed, and causes furnace pressure to raise, and easily causes phenomena such as pyrolysis gas leaks outside, and uses the vertical tube mode cloth of the present invention
Postpone, reduce the contact area with material, coking phenomenon caused by cohesiveness is greatly improved.
According to some embodiments of the present invention, the coal that apparatus of the present invention use has the duff kind between the mesh of 100 mesh -200,
Applied also very generally on boiler of power plant for the coal in such a particle size range, coal wide material sources, fine breeze is in high temperature
Under stove in residence time it is very short, just quickly complete pyrolytic reaction in very short height, reduce body of heater height.
Embodiment 1：The radius of body of heater is 70cm, and the external diameter of center heat accumulation type radiant tube is 14cm, the circumferential layer accumulation of heat
The external diameter of formula radiant tube is 18.8cm, and the radius of the circle that one layer of circumferential layer heat accumulation type radiant tube is formed is 35cm, one layer of institute
The radical for stating circumferential layer heat accumulation type radiant tube is 8, and the center of circle angle α of adjacent two is 45 °.
The present apparatus is using the coal of Yulin colliery plant area as raw material, and particle diameter is the mesh of 100 mesh -200, using pyrolysis installation to it
Pyrolytic process is carried out, processing is dried in fine coal in advance, the Yulin coal basic data of fine coal is as shown in table 1 after drying.
Table 1：Yulin coal basic data
Pyrolysis oven is highly 2 meters, treating capacity 20kg/h, is run 100 hours, furnace pressure 0.6MPa；Heat accumulation type radiant tube
Temperature setting is into 1200 DEG C, the semicoke 1100kg, pyrolysis gas 740kg, the common 160kg of pyrolytic tar water that finally give；Compared with normal pressure
Same operation condition is compared, and semicoke improves 17% with pyrolysis gas gross production rate, and experiment is smoothed out to end, is not cohered
The problems such as putty builds the pressure.
Inventor has found that the present invention is easy for installation to be a kind of simple in construction, is capable of the quick of efficient process superfine powder coal
The type of furnace is pyrolyzed, the coal of glutinous viscosity easily coking can be handled, widens the adaptability of coal；Reduce the number of heat accumulation type radiant tube
Amount, manual operation is reduced, plant failure rate is low, and using radiant tube reasonable Arrangement mode, the temperature field in effective guarantee stove is equal
It is even；And Proper Design of the present invention is reduced into pressure resistant vessel, gas pressure rise, volume so that equipment miniaturization, is greatly subtracted
Lack the flow of follow-up tail gas clean-up technique, reduce equipment and technique cost；The present invention is arranged using rational vertical tube simultaneously,
Make the wear extent of lower end radiant tube very small, there's almost no, reduce cost of equipment maintenance, increase service life of equipment, band
Carry out economic benefit；In addition, the coal that the present invention uses has the duff kind between the mesh of 100 mesh -200, exist at high temperature at fine breeze
Residence time in stove is very short, and pyrolytic reaction is just quickly completed in very short height, reduces body of heater height.
In the description of the invention, it is to be understood that the orientation or position relationship of the instruction such as term " on ", " under " are base
In orientation shown in the drawings or position relationship, description description of the invention and simplified, rather than instruction or hint are for only for ease of
Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this
The limitation of 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)
- A kind of 1. superfine powder rapid pyrolysis apparatus, it is characterised in that including：Body of heater and heat accumulation type radiant tube, wherein,The heat accumulation type radiant tube is vertically arranged at the inner chamber of the body of heater, and the heat accumulation type radiant tube includes：Center Heat accumulation type radiant tube and circumferential layer heat accumulation type radiant tube, wherein, the center heat accumulation type radiant tube is arranged in the inner chamber Portion, the circumferential layer heat accumulation type radiant tube is arranged circumferentially about around the center heat accumulation type radiant tube, and the circumferential layer accumulation of heat Formula radiant tube includes：More heat accumulation type radiant tubes, there is 15 ° -60 ° of center of circle angle per adjacent two heat accumulation type radiant tubes.
- 2. superfine powder rapid pyrolysis apparatus according to claim 1, it is characterised in that also include：Material inlet, pyrolysis gas Outlet and the outlet of taper semicoke, wherein, the material inlet is arranged at the top of the body of heater, and the pyrolysis gas outlet is arranged at In the middle part of sliding channel of the body of heater, the taper semicoke outlet is arranged at the bottom of the body of heater.
- 3. superfine powder rapid pyrolysis apparatus according to claim 2, it is characterised in that one end of the heat accumulation type radiant tube It is arranged at the material inlet, the other end is arranged on the taper semicoke exit, is easy to control to light a fire.
- 4. superfine powder rapid pyrolysis apparatus according to claim 1, it is characterised in that the heat accumulation type radiant tube is straight type Heat accumulation type radiant tube；The body of heater is cylinder, and its height be 2-10m, residence time of the material in the body of heater for 2s with On.
- 5. superfine powder rapid pyrolysis apparatus according to claim 1, it is characterised in that the circumferential layer heat accumulation type radiant tube The radius of the circle of formation is r, and the radius of the body of heater is R, wherein, 1/4<r/R<4/5.
- 6. superfine powder rapid pyrolysis apparatus according to claim 5, it is characterised in that the circumferential layer heat accumulation type radiant tube The number of plies be 1-10 layers, the spacing distance between every layer is equal.
- 7. superfine powder rapid pyrolysis apparatus according to claim 6, it is characterised in that the circumferential layer heat accumulation type radiant tube The number of plies be 1-3 layers.
- 8. superfine powder rapid pyrolysis apparatus according to claim 1, it is characterised in that the center of circle angle is identical.
- 9. superfine powder rapid pyrolysis apparatus according to claim 1, it is characterised in that the center heat accumulation type radiant tube External diameter is 10-40cm, and the external diameter of the circumferential layer heat accumulation type radiant tube is 10-60cm.
- 10. superfine powder rapid pyrolysis apparatus according to claim 9, it is characterised in that the circumferential layer heat accumulating type radiation The external diameter of pipe is 1-1.5 times of the external diameter of the center heat accumulation type radiant tube.
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| CN110467939A (en) * | 2018-05-09 | 2019-11-19 | 张渊沧 | Tunnel type pyrolysis furnace |
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| CN205999332U (en) * | 2016-08-17 | 2017-03-08 | 华能国际电力股份有限公司 | A kind of pyrolytic reaction device |
| CN208104292U (en) * | 2017-11-24 | 2018-11-16 | 北京神雾电力科技有限公司 | A kind of superfine powder rapid pyrolysis apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205999332U (en) * | 2016-08-17 | 2017-03-08 | 华能国际电力股份有限公司 | A kind of pyrolytic reaction device |
| CN208104292U (en) * | 2017-11-24 | 2018-11-16 | 北京神雾电力科技有限公司 | A kind of superfine powder rapid pyrolysis apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110467939A (en) * | 2018-05-09 | 2019-11-19 | 张渊沧 | Tunnel type pyrolysis furnace |
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