CN105802647B - Thin layer pyrolysis oven, pyrolysis installation and method for pyrolysis for flour coal - Google Patents
Thin layer pyrolysis oven, pyrolysis installation and method for pyrolysis for flour coal Download PDFInfo
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- CN105802647B CN105802647B CN201610282574.1A CN201610282574A CN105802647B CN 105802647 B CN105802647 B CN 105802647B CN 201610282574 A CN201610282574 A CN 201610282574A CN 105802647 B CN105802647 B CN 105802647B
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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
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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
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/18—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge
Abstract
The present invention provides a kind of thin layer pyrolysis oven, pyrolysis installation and method for pyrolysis for flour coal, are related to coal chemical technology, solve the problems, such as that the heated heat transfer of coal charge is uneven and pyrolysis gas is not easy to be discharged.Being horizontally disposed in thin layer pyrolysis oven of the invention has semi open model gas to export channel, and structure is closed upper part and lower open；Semi open model gas export one end of the channel be connected to gas vent, and the other end and the opposite wall surface of furnace side wall surface where with gas vent connect, and upper part and furnace top surface are opposite and have spacing, and relatively and there is spacing in its underpart and furnace bottom face；Semi open model gas, which exports channel and heated wall, has horizontal space；When there is coal charge, the coal charge of the inner space of its underpart and the inner space of upper part form chamber, and chamber constitutes whole gas and exports channel, and pyrolysis gas is escaped along complete channels from gas vent.Thin layer pyrolysis furnace structure of the invention is simple, and the heated heat transfer of coal charge is uniform, pyrolysis gas emission effect is good.
Description
Technical field
The present invention relates to coal chemical technology more particularly to a kind of thin layer pyrolysis oven, pyrolysis installation and heat for flour coal
Solution method.
Background technique
Pyrolysis of coal is to heat coal in the absence of air conditions, generates the products such as coal gas, tar and semicoke.Pyrolysis of coal
Journey generally passes through warm-up phase (dehydration), pyrolysis phase (pyrolysis of coal) and pyrolysis later period (semicoke is cooling).Pyrolysis of coal is common to be added
Hot mode is internal heat type, external-heat and inside and outside heat and is pyrolyzed with formula；Wherein, external-heat is the combustion heating chamber by coal heat decomposition stove
Coal charge heat transfer of the heated wall into pyrolysis oven, coal charge layer is gradually warmed up from close to position to the furnace interior position of heated wall.
In the development process of pyrolysis of coal technology, primary focus studies the pyrolytic technique of small beans and fine coal, using outer
In the technology that hot type is pyrolyzed above-mentioned flour coal, since flour coal partial size is smaller, accumulated in pyrolysis plant closeer
Real, the heated wall of pyrolysis oven heats coal charge, and the heat source ecto-entad transmitting of heated wall is not easy to be heated to internal coal seam,
Easily cause coal charge uneven heating even, pyrolytic process is not easy to control, and the semicoke quality of generation is uneven, poor quality, the pyrolysis of generation
Gas is not easy to escape, and secondary pyrolytic reaction easily occurs, reduces tar yield, production efficiency is caused to decline.
To solve the above-mentioned problems, someone has investigated a kind of pyrolysis of coal method, the pyrolysis oven that this method uses mainly by
Two pieces of high temperature resistant plates form a lamella space, and feed coal is flowed from above to below in lamella space with the state of thin layer, thin layer
Two sides heating, thin layer centre are arranged two pieces of flase floors and form gas passages, and the pyrolysis gas that thin layer coal generates during heating is worn
The duct on flase floor is crossed to enter in flase floor gas passage.
Above-mentioned pyrolysis of coal method solves the problems, such as coal pyrolysis gas discharge, but its pyrolysis installation structure used is more multiple
It is miscellaneous, it is not easy to repair, and coal charge uneven heating when flowing from above to below is even, heat-transfer effect is poor；Particularly with flour coal,
Uneven heating is even, and pyrolysis gas discharge effect is poor, and pyrolysis of coal product qualities are poor, is not able to satisfy production needs, and the above problem has
It is to be solved.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of thin layer pyrolysis oven, pyrolysis installation and pyrolysis for flour coal
Method, main purpose be to provide it is a kind of it is simple for flour coal texture, be heated evenly and the thin layer pyrolysis oven of good exhaust effect.
In order to achieve the above objectives, invention broadly provides following technical solutions:
On the one hand, the embodiment of the invention provides a kind of thin layer pyrolysis ovens for flour coal, comprising: coal feed inlet,
Semicoke discharge port, gas vent and combustion heating chamber, being horizontally disposed in the thin layer pyrolysis oven has semi open model gas to export channel；
The one end in semi open model gas export channel is connected to the gas vent, the other end and with the gas vent institute
The opposite side wall surface of furnace side wall surface closely connect；
The top in semi open model gas export channel and furnace top surface where the coal feed inlet are opposite and have
Spacing, the lower part in semi open model gas export channel and furnace bottom face where the semicoke discharge port are opposite and between having
Away from；
The heated wall of the semi open model gas export channel and the combustion heating chamber has in the horizontal direction between level
Away from the horizontal space is flowed from above to below for coal charge；
The structure in semi open model gas export channel is closed upper part and lower open；
The coal charge layer deposited in the inner space of the lower part in semi open model gas export channel when there is coal charge and institute
The inner space for stating the top in semi open model gas export channel forms chamber, and the chamber constitutes whole gas and exports channel,
The gas that pyrolysis of coal generates is escaped along whole gas export channel from the gas vent.
Preferably, semi open model gas export channel be it is multiple, multiple semi open model gases export channels from furnace
Top surface to furnace bottom face, the direction along vertical furnace bottom surface are arranged successively；
The spacing in adjacent two semi open model gases export channel is 100mm-1000mm；
Have on the wall surface of furnace side and export channel one-to-one multiple gas vents respectively with the multiple semi open model gas,
Each semi open model gas export channel all has a gas vent and communicates therewith.
Preferably, the spacing in adjacent two semi open model gases export channel is 300mm-600mm.
Preferably, the shape of cross section of the semi open model gas export channel in vertical furnace top surface direction is V
Type, the extended of falling V or circular arc type.
Preferably, the heated wall of the combustion heating chamber is equipped with multiple baffle plates, the baffle plate is for strengthening height
One end of the mixing of warm coal charge and low temperature coal charge, the baffle plate is closely connect with heated wall, the other end with a baffling angle to
In lower insertion coal charge.
Preferably, in the direction of vertical furnace top surface, furnace top surface and semi open model gas adjacent thereto export channel it
Between heat exchanger tube is installed；In the direction of vertical furnace bottom surface, furnace bottom face and semi open model gas adjacent thereto export channel it
Between lower heat exchanger tube is installed；The upper heat exchanger tube is connected to the lower heat exchanger tube by the pipeline that thin layer is pyrolyzed outside furnace body；
All have flowable heat carrier in the upper heat exchanger tube and the lower heat exchanger tube, the heat carrier be gas and/
Or liquid, the heat carrier by and the upper heat exchanger tube and the lower heat exchanger tube internal circulation flow with coal charge cycle heat exchange；
The endless form of the heat carrier is forced circulation mode or the self-loopa as caused by the density contrast of the heat carrier
Mode.
On the other hand, the embodiment of the invention provides a kind of thin layer pyrolysis ovens for flour coal, comprising: coal charging
Mouth, semicoke discharge port, gas vent and combustion heating chamber, being horizontally disposed in the thin layer pyrolysis oven has a gas to export channel；
The one end in gas export channel is connected to the gas vent, the other end and the furnace side where with the gas vent
The opposite side wall surface of wall surface closely connects；
The top in gas export channel and furnace top surface where the coal feed inlet are opposite and have spacing, described
Gas exports the lower part in channel and the furnace bottom face where the semicoke discharge port relatively and with spacing；
The heated wall of the gas export channel and the combustion heating chamber has horizontal space, the water in the horizontal direction
Flat spacing is flowed from above to below for coal charge；
The upper vertical in gas export channel is provided with ventilation pipe；The ventilation pipe and furnace top surface it is opposite one
End seal is closed, and the other end of the ventilation pipe is open and is inserted into gas export channel；
Gas export channel is that the semi open model gas of closed upper part and lower open exports channel, when there is coal charge
When, the coal charge layer deposited in the inner space of the lower part in semi open model gas export channel is led with the semi open model gas
The inner space on the top in channel forms chamber out, and the chamber constitutes whole gas and exports channel；
Or gas export channel is closed conduit；
There are multiple holes, the gas that pyrolysis of coal generates passes through described in the entrance of tube wall hole on the tube wall of the ventilation pipe
It is escaped in ventilation pipe and along gas export channel from the gas vent.
Preferably, gas export channel is located at the lower end of the thin layer pyrolysis oven；The quantity of the ventilation pipe
To be multiple, multiple ventilation pipes are in same vertical plane.
Preferably, the shape of cross section of the semi open model gas export channel in vertical furnace top surface direction is V
Type, the extended of falling V or circular arc type.
Preferably, the heated wall of the combustion heating chamber is equipped with multiple baffle plates, the baffle plate is for strengthening height
One end of the mixing of warm coal charge and low temperature coal charge, the baffle plate is closely connect with heated wall.
On the other hand, the embodiment of the invention provides a kind of thin layer pyrolysis ovens for flour coal, comprising: coal charging
Mouth, semicoke discharge port, gas vent and combustion heating chamber, being horizontally disposed in the thin layer pyrolysis oven has a gas to export channel；
The one end in gas export channel is connected to the gas vent, the other end and the furnace side where with the gas vent
The opposite side wall surface of wall surface closely connects；
The top in gas export channel and furnace top surface where the coal feed inlet are opposite and have spacing, described
Gas exports the lower part in channel and the furnace bottom face where the semicoke discharge port relatively and with spacing；
The heated wall of the gas export channel and the combustion heating chamber has horizontal space, the water in the horizontal direction
Flat spacing is flowed from above to below for coal charge；
The upper vertical in gas export channel is provided with ventilation pipe；The ventilation pipe it is opposite with furnace top surface one
End is equipped with dust cap, and the other end of the ventilation pipe is inserted into gas export channel；On the tube body of the ventilation pipe
At least provided with a dust cap；
The ventilation pipe intersects with dust cap and the tube wall not contacted with coal charge is equipped with multiple holes；The snorkel
It is protected on road without dust cap and the tube wall contacted with coal charge is closed；
Gas export channel is that the semi open model gas of closed upper part and lower open exports channel, when there is coal charge
When, the coal charge layer deposited in the inner space of the lower part in semi open model gas export channel is led with the semi open model gas
The inner space on the top in channel forms chamber out, and the chamber constitutes whole gas and exports channel；
Or gas export channel is closed conduit；
The gas that pyrolysis of coal generates is entered in the ventilation pipe and along described by the tube wall hole of the ventilation pipe
Ventilation pipe enters the gas and exports channel, finally escapes from the gas vent.
Preferably, gas export channel is located at the lower end of the thin layer pyrolysis oven；The quantity of the ventilation pipe
To be multiple, multiple ventilation pipes are in same vertical plane；Multiple dust caps are equipped on the tube body of each ventilation pipe；It is described anti-
The shape of dirt cap is umbrella.
Preferably, the shape of cross section of the semi open model gas export channel in vertical furnace top surface direction is V
Type, the extended of falling V or circular arc type.
Preferably, the heated wall of the combustion heating chamber is equipped with multiple baffle plates, the baffle plate is for strengthening height
One end of the mixing of warm coal charge and low temperature coal charge, the baffle plate is closely connect with heated wall, the other end with a baffling angle to
In lower insertion coal charge.
Another aspect, the embodiment of the invention provides a kind of pyrolysis installation for flour coal, the pyrolysis installation be by
Above-mentioned thin layer pyrolysis oven is successively in parallel to be formed, the gas treatment outside gas vent and furnace body in the side wall surface of the thin layer pyrolysis oven
Total pipeline is connected to, and the semicoke discharge port on the furnace bottom face of the thin layer pyrolysis oven handles total equipment with the semicoke outside furnace body and is connected to.
In another aspect, the method for pyrolysis uses the embodiment of the invention provides a kind of method for pyrolysis for flour coal
Above-mentioned thin layer pyrolysis oven, the method for pyrolysis the following steps are included:
By feed coal out of coal feed inlet investment pyrolysis oven, feed coal flows from above to below under the effect of gravity, pyrolysis
The heated wall of furnace heats the coal charge of flowing；
For coal charge when flowing through semi open model gas export channel, semi open model gas export channel is to flowing downward
Coal charge is shunted and is mixed so that coal charge is heated evenly；
Coal charge is cooling by preheating, pyrolysis and semicoke, generates pyrolysis gas and solid product, the pyrolysis gas is along described complete
Gas exports channel and escapes from gas vent, and the solid product is discharged from semicoke discharge port.
On the other hand, the embodiment of the invention provides a kind of method for pyrolysis for flour coal, the method for pyrolysis is used
Above-mentioned thin layer pyrolysis oven, the method for pyrolysis the following steps are included:
By feed coal out of coal feed inlet investment pyrolysis oven, feed coal flows from above to below under the effect of gravity；
The heated wall of pyrolysis oven heats the coal charge of flowing, and coal charge is cooling by preheating, pyrolysis and semicoke, generates heat
It vents one's spleen and solid product；
The gas that pyrolysis of coal generates is entered in the ventilation pipe by the tube wall hole of ventilation pipe, further through described logical
Feed channel enters gas export channel and escapes from the gas vent, and the solid product is discharged from semicoke discharge port.
Compared with prior art, the beneficial effects of the present invention are:
The present invention is not easy discharge and pyrolysis oven for the heated uneven, pyrolysis gas that conducts heat of the coal charge occurred during pyrolysis of coal
Structure is complicated the technical problems such as is not easy to overhaul, and proposes a kind of thin layer pyrolysis oven for flour coal, setting in the pyrolysis oven
Having structure is the semi open model gas export channel of closed upper part and lower open formula, described when coal charge flows from above to below
Coal charge is exported corridor diversion and fallen by semi open model gas, and the coal charge for being conducive to all directions is mixed sufficiently so as to be heated in coal charge
Heat transfer is uniform；And the coal charge layer deposited in the inner space of the lower part in semi open model gas export channel with it is described half-open
The inner space for putting the top in formula gas export channel is formed by chamber and constitutes a whole gas export channel, is conducive to
Gas caused by during pyrolysis of coal exports channel along above-mentioned whole gas and escapes from gas vent；
The semi open model of closed upper part proposed by the present invention and lower open exports the mentality of designing in channel, can not only make to flow
Dynamic coal charge, which is sufficiently mixed, reaches the heated uniform purpose of heat transfer, and using the formed complete channels in coal seam in order to being pyrolyzed
Gas evolution, and semi open model gas export channel is in furnace, is not contacted with furnace bottom and furnace roof, is eliminated to a certain extent
Partial component saves material, and pyrolysis furnace structure of the invention is simply easy to repair, and preferably resolves by above-mentioned design
The problems such as uniform pyrolysis gas discharge effect of coal charge uneven heating is poor in the prior art.
Detailed description of the invention
Fig. 1 a is a kind of structural schematic diagram of thin layer pyrolysis oven provided in an embodiment of the present invention；
Fig. 1 b is structural schematic diagram when having coal charge in a kind of thin layer pyrolysis oven provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of another thin layer pyrolysis oven provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another thin layer pyrolysis oven provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of another thin layer pyrolysis oven provided in an embodiment of the present invention；
Fig. 5 a, Fig. 5 b and Fig. 5 c are that semi open model gas export channel is horizontal in thin layer pyrolysis oven provided in an embodiment of the present invention
The schematic diagram in section；
Fig. 6 a, Fig. 6 b and Fig. 6 c are the schematic diagrames of baffle plate in thin layer pyrolysis oven heated wall provided in an embodiment of the present invention；
Fig. 7 is structural schematic diagram of the thin layer pyrolysis oven with circulating heat exchange system provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram of pyrolysis installation provided in an embodiment of the present invention.
Description of symbols: 1. coal feed inlets, 2. semicoke outlets, 3. combustion heating chamber, 4. gas vents, 5. is semi-open
Formula gas export channel, 6. coal charge layers, the gas that 7. pyrolysiss of coal generate, 8. ventilation pipes, 9. tube wall holes, 10. dust caps,
11. baffle plate, heat exchanger tube on 12., 13. lower heat exchanger tubes.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to specific embodiment, technical solution, feature and its effect applied according to the present invention, specifically
It is bright as after.The special characteristic, structure or feature in multiple embodiments in following the description can be combined by any suitable form.
The embodiment of the invention provides a kind of thin layer pyrolysis ovens for flour coal, as shown in Figure 1a, comprising: coal charging
Mouthful 1, semicoke discharge port 2, gas vent 4 and combustion heating chamber 3, being horizontally disposed in above-mentioned thin layer pyrolysis oven has semi open model gas to lead
Channel 5 out；Above-mentioned thin layer pyrolysis oven is generally divided into preheating section, pyrolysis section and cold from furnace roof to furnace bottom according to in-furnace temperature height
But section, being horizontally disposed at least in pyrolysis section has semi open model gas to export channel；
The structure that semi open model gas exports channel 5 is closed upper part and lower open；
The one end in semi open model gas export channel 5 is connected to gas vent 4, the other end and the furnace side where with gas vent 4
The opposite side wall surface of wall surface closely connects；
Semi open model gas exports the top in channel 5 and the furnace top surface where coal feed inlet 1 relatively and with spacing, partly
Opening gas exports the lower part in channel 5 and the furnace bottom face where semicoke discharge port 2 relatively and with spacing；
The heated wall of semi open model gas export channel 5 and combustion heating chamber 3 has horizontal space in the horizontal direction, above-mentioned
Horizontal space is flowed from above to below for coal charge；
As shown in Figure 1 b, when there is coal charge, the coal that deposits in the inner space of the lower part in semi open model gas export channel 5
The inner space on the top in the bed of material 6 and semi open model gas export channel 5 forms chamber, and above-mentioned chamber constitutes whole gas export
Channel, the gas 7 that pyrolysis of coal generates export channel along above-mentioned whole gas and escape from gas vent 4.
The above-mentioned thin layer pyrolysis oven for flour coal provided by the invention, by above-mentioned pyrolysis oven setting structure be it is upper
The semi open model gas of portion's closing and lower open formula exports channel 5, and when coal charge flows from above to below, above-mentioned coal charge is split
And fall, the coal charge for being conducive to all directions is mixed sufficiently so that in the heated heat transfer of coal charge uniformly；Specifically, coal charge is from semi-open
Formula gas export channel two sides, which are fallen, imports semi open model gas export channel lower end coal seam position, can make the coal of heated wall two sides
The coal charge cross-mixing of material and furnace central part is to reach contact heat transfer, the purpose of coal charge thermally equivalent；And semi open model gas
The inside on the top of the coal charge layer 6 and semi open model gas export channel 5 that are deposited in the inner space of the lower part in body export channel 5
Space is formed by chamber and constitutes a whole gas export channel, and the gas for being conducive to generate during pyrolysis of coal is along above-mentioned
Whole gas exports channel and escapes from gas vent；Wherein, since coal charge is broken coal and/or fine coal, with certain partial size, coal seam
In there is a fixed gap, the level of coal charge layer 6 deposited in the inner space of the lower part in semi open model gas export channel 5 is
Concave surface, this my face and forms near-rhombic chamber with the lower part in semi open model gas export channel 5, and coal charge will not be by semi open model
Space in gas export channel 5 is filled up；Therefore, the phenomenon that being generated using above structure and above structure, makes coal charge layer 6 and half
Opening gas exports channel 6 and forms a whole gas export channel, and the gas 7 that pyrolysis of coal generates passes through the gap in coal seam
Whole gas export channel is escaped and entered from coal surface, and is escaped from gas vent 4 along whole gas export channel,
Achieve the purpose that pyrolysis gas is discharged.
Above structure proposed by the present invention not only solves the problems, such as that coal pyrolysis gas is not easy to be discharged, and it is uniform to be more advantageous to coal charge
Heated heat transfer, and eliminate furnace interior to a certain extent and divide component, material is saved, is convenient for the pyrolysis furnace structure simply
Maintenance.Above-mentioned thin layer pyrolysis oven is suitable for partial size about 10cm coal charge pyrolysis below, below in 10mm particularly with partial size
Coal charge pyrolysis, heat transfer and exhaust effect are best.
As the preferred of above-described embodiment, as shown in Fig. 2, the quantity in semi open model gas export channel 5 is settable multiple；
From furnace top surface to furnace bottom face, the direction along vertical furnace bottom surface is arranged successively, above-mentioned more in multiple a semi open model gas export channels
A semi open model gas export channel is in same vertical plane；Have on the wall surface of furnace side and is exported with above-mentioned multiple semi open model gases
One-to-one multiple gas vents, each semi open model gas export channel all have a gas vent and connect with it respectively in channel
It is logical；I.e. a corresponding gas vent in semi open model gas export channel, 10 semi open model gas export channels generate 10
A gas vent, fifty-fifty opening gas export the pyrolysis gas collected in channel and escape from corresponding gas vent；Adjacent two
The spacing in a semi open model gas export channel is 100mm-1000mm, preferably 300mm-600mm；
The setting quantity in above-mentioned semi open model gas export channel depending on furnace size and coal partial size, when coal charge partial size compared with
Hour can increase the setting quantity in semi open model gas export channel suitably to achieve the purpose that pyrolysis gas preferably is discharged；Work as coal
Material partial size can suitably reduce the setting quantity of semi open model gas export pain when larger, the gap that the coal charge of bulky grain is formed is larger
Conducive to the pyrolysis gas evolution in coal seam.
The embodiment of the invention also provides a kind of thin layer pyrolysis ovens for flour coal, as shown in Figure 3, comprising: coal into
Material mouth 1, semicoke discharge port 2, gas vent 4 and combustion heating chamber 3, being horizontally disposed in above-mentioned thin layer pyrolysis oven has gas export logical
Road；
The one end in above-mentioned gas export channel is connected to above-mentioned gas vent 4, the other end and the furnace where with above-mentioned gas vent 4
The opposite side wall surface of side wall surface closely connects；The top and the furnace roof where above-mentioned coal feed inlet 1 that above-mentioned gas exports channel
Face is opposite and has spacing, and above-mentioned gas exports the furnace bottom face at 2 place of lower part and above-mentioned semicoke discharge port in channel relatively and has
There is spacing；The heated wall of above-mentioned gas export channel and above-mentioned combustion heating chamber 3 has horizontal space, above-mentioned water in the horizontal direction
Flat spacing is flowed from above to below for coal charge；The upper vertical in above-mentioned gas export channel is provided with ventilation pipe 8；Above-mentioned ventilation
Closed at one end opposite with furnace top surface of pipeline 8, the other end of above-mentioned ventilation pipe 8 is open and to be inserted into above-mentioned gas export logical
In road；Above-mentioned gas exports the semi open model gas export channel 5 that channel is closed upper part and lower open, when there is coal charge,
The coal charge layer and above-mentioned semi open model gas deposited in the inner space of the lower part in above-mentioned semi open model gas export channel 5 exports
The inner space on the top in channel 5 forms chamber, and above-mentioned chamber constitutes whole gas and exports channel；Or above-mentioned gas exports channel
For closed conduit；On the tube wall of above-mentioned ventilation pipe have multiple holes, pyrolysis of coal generate gas by tube wall hole 9 into
Enter in above-mentioned ventilation pipe 8 and is escaped along above-mentioned gas export channel from above-mentioned gas vent 4.
As the preferred of above-described embodiment, above-mentioned gas export channel is located at the lower end of thin layer pyrolysis oven；Above-mentioned snorkel
The quantity in road 8 be it is multiple, multiple ventilation pipes 8 are in same vertical plane；The quantity of ventilation pipe is according to coal charge partial size and furnace ruler
Depending on very little.When coal charge partial size is smaller, such as fine coal, greater number of ventilation pipe 8 should be set in favor of the pyrolysis in coal seam
Gas enters in ventilation pipe；When coal charge partial size is larger, settable small number of ventilation pipe 8, large coal particles can form hole
Gap is conducive to pyrolysis gas evolution.
The embodiment of the invention also provides a kind of thin layer pyrolysis ovens for flour coal, as shown in Figure 4, comprising: coal into
Material mouth 1, semicoke discharge port 2, gas vent 4 and combustion heating chamber 3, being horizontally disposed in above-mentioned thin layer pyrolysis oven has gas export logical
Road；
The one end in above-mentioned gas export channel is connected to above-mentioned gas vent 4, the other end and the furnace where with above-mentioned gas vent 4
The opposite side wall surface of side wall surface closely connects；The top and the furnace roof where above-mentioned coal feed inlet 1 that above-mentioned gas exports channel
Face is opposite and has spacing, and above-mentioned gas exports the furnace bottom face at 2 place of lower part and above-mentioned semicoke discharge port in channel relatively and has
There is spacing；The heated wall of above-mentioned gas export channel and above-mentioned combustion heating chamber 3 has horizontal space, above-mentioned water in the horizontal direction
Flat spacing is flowed from above to below for coal charge；The upper vertical in above-mentioned gas export channel is provided with ventilation pipe 8；Above-mentioned ventilation
The one end opposite with furnace top surface of pipeline 8 is equipped with dust cap 10, and the other end insertion above-mentioned gas of above-mentioned ventilation pipe 8 exports channel
It is interior；At least provided with a dust cap 10 on the tube body of above-mentioned ventilation pipe；Above-mentioned ventilation pipe 8 intersect with dust cap 10 and not with
The tube wall of coal charge contact is equipped with multiple holes；The tube wall protected on above-mentioned ventilation pipe 8 without dust cap 10 and contacted with coal charge
It is closed；
Above-mentioned gas exports the semi open model gas that channel is closed upper part and lower open and exports channel 5, when there is coal charge
When, the coal charge layer and above-mentioned semi open model gas that deposit in the inner space of the lower part in above-mentioned semi open model gas export channel 5
The inner space for exporting the top in channel 5 forms chamber, and above-mentioned chamber constitutes whole gas and exports channel；Or above-mentioned gas export
Channel is closed conduit；There are multiple holes, the gas that pyrolysis of coal generates passes through snorkel on the tube wall of above-mentioned ventilation pipe 8
The tube wall hole 9 in road 8 enters in above-mentioned ventilation pipe 8 and escapes along above-mentioned gas export channel from above-mentioned gas vent 4.
As the preferred of above-described embodiment, as shown in figure 4, gas export channel is located at the lower end of thin layer pyrolysis oven；Ventilation
The quantity of pipeline 8 be it is multiple, multiple ventilation pipes 8 are in same vertical plane；2-5 are equipped on the tube body of each ventilation pipe
Dust cap 10；Dust cap is preferably shaped to umbrella, and coal charge is fallen along dust cap 10 when launching coal charge, protects in dust cap 10
Multiple holes are provided on the tube wall of ventilation pipe 8 in range, which enters logical for the gas 7 that pyrolysis of coal generates
In feed channel 8, due to the protection of dust cap, the coal charge fallen will not be entered in ventilation pipe 8 by tube wall hole 9, dust-proof
Ventilation pipe 8 outside 10 protection scope of cap is contacted with coal charge, and tube wall is closed to prevent coal charge from entering in ventilation pipe；Separately
The outer dust cap is that umbrella can also make the coal charge shunting of flowing fall conduct heat mutually to reach coal charge to be sufficiently mixed, is heated equal
Even purpose.
As the preferred of above-described embodiment, as shown in Fig. 5 a, Fig. 5 b and Fig. 5 c, above-mentioned semi open model gas exports channel 5
Shape in the cross section in vertical furnace top surface direction is inverted V type, the extended of falling V or circular arc type.Using above-mentioned shape, it is more advantageous to
It shunts, be sufficiently mixed with the heated heat transfer of coal charge uniformly when coal charge is fallen.
As the preferred of above-described embodiment, when the quantity in semi open model gas export channel is multiple, for example, 2-10
A, then shape of the semi open model gas export channel in the cross section in vertical furnace top surface direction is inverted V type, the extended of falling V and circle
At least one of camber；Multiple semi open model gases i.e. in the same pyrolysis oven export channel, and cross section can be entirely
Inverted V type, the extended of falling V or circular arc type can be any two wherein in three, or there are three types of the cross sections of shape for tool, often
A kind of quantity in corresponding semi open model gas export in cross section channel does not limit.Collocation using above-mentioned mixing shape is more advantageous
It is shunted in coal charge, mixing and heating heat transfer.
It is set in the heated wall of above-mentioned combustion heating chamber as shown in Fig. 6 a, Fig. 6 b and Fig. 6 c as the preferred of above-described embodiment
There are multiple baffle plates 11, for strengthening the mixing of high temperature coal charge Yu low temperature coal charge；One end of baffle plate 11 closely connects with heated wall
It connects, the other end is downwardly into coal charge with a baffling angle 14, and baffling angle 14 is greater than 0 ° less than 90 °, and baffling angle 14 is preferred
To be less than or equal to 60 ° more than or equal to 30 °.
Setting position of the baffle plate 11 in heated wall, density of setting and baffling angle 14 can according to the size of pyrolysis oven and
The partial size of coal charge is determined, and for coal charge partial size of the invention is about 10mm hereinafter, the present invention is uniformly arranged folding in heated wall
Flowing plate 11, and when the setting angle of baffle plate 11 is to be less than or equal to 60 ° more than or equal to 30 °, coal charge mixing is conducted heat by thermal effect
Fruit is best.
The purpose of baffle plate 11 is arranged in the present invention in heated wall: baffle plate 11 extends in coal seam, and baffle plate 11 is heated
Heat can be reached in coal seam, the coal seam on the inside of furnace is heated, prevent more, temperature of being heated close to the outside coal seam of heated wall
Height, and coal seam is heated few on the inside of the furnace far from heated wall, temperature is low, to cause coal charge heating from outside to inside uneven；Folding
Another significance of flowing plate 11 is, can also be to coal that flows from above to below other than thermally conductive and heat inside coal charge
Material carries out water conservancy diversion, that is, upsets the original sequence of flow of coal charge and direction, makes the coal charge close to heated wall side when falling along folding
The water conservancy diversion direction of flowing plate 11 falls on the coal seam on the inside of furnace and mixes with inside coal charge as to make all coal charges mutual as possible
Heat transfer, thermally equivalent, so that coal charge be made sufficiently to be pyrolyzed；Coal charge passes through multiple baffle plates 11, from top to bottom, close to the coal of heated wall
Material and the continuous contact heat transfer of coal charge far from heated wall, shunting fall, remix heat transfer, and coal charge is by repetitious mixed
Splitting or integrating stream is finally reached most coal charges and is heated evenly, and pyrolysis of coal is abundant, and thermal decomposition product is best in quality.
As the preferred of above-described embodiment, as shown in fig. 7, in the direction of vertical furnace top surface, above-mentioned furnace top surface and with its phase
Heat exchanger tube 12 is installed between adjacent semi open model gas export channel；In the direction of vertical furnace bottom surface, above-mentioned furnace bottom face and
Lower heat exchanger tube 13 is installed between semi open model gas export channel adjacent thereto；Above-mentioned upper heat exchanger tube 12 and above-mentioned lower heat exchange
Pipe 13 is pyrolyzed the pipeline outside furnace body by thin layer and is connected to；It all has and can flow in above-mentioned upper heat exchanger tube 12 and above-mentioned lower heat exchanger tube 13
Dynamic heat carrier, above-mentioned heat carrier be gas and/or liquid, above-mentioned heat carrier by above-mentioned upper heat exchanger tube 12 and it is above-mentioned under change
13 internal circulation flow of heat pipe and with coal charge cycle heat exchange；The endless form of above-mentioned heat carrier is for forced circulation mode or by above-mentioned heat
Self-circulation mode caused by the density contrast of carrier.
I.e. about coal warm-up phase and not set semi open model gas export channel region and semicoke cooling stage and
The region in not set semi open model gas export channel is respectively provided with circulating heat exchange system, probably pacifies in the preheating section of pyrolysis oven
Equipped with horizontal upper heat exchanger tube, it is used for preheating material coal, horizontal lower heat exchanger tube is installed in cooling section, for cooling half
It is burnt；The pipeline of heat exchanger tube 12 and lower heat exchanger tube 13 is located at outside furnace body in connection, and all heat exchange pipelines are not passed through semi open model gas
Export channel；It is lower in the coal charge temperature of warm-up phase, it is 400 DEG C -900 DEG C in the coal charge temperature of pyrolysis phase, it is cold in semicoke
But the temperature of stage solid product is with needing to control its temperature according to subsequent technique, in above-mentioned upper heat exchanger tube 12 and lower heat exchanger tube 13
Heat carrier is flowed, when heat carrier is recycled to the semicoke stage, heat carrier heat absorption, solid product such as semicoke is cooled down by heat exchange,
Absorb heat heat carrier along furnace body outside pipeline be recycled to upper heat exchanger tube, and exchange heat with the low temperature coal charge of warm-up phase, heat carrier is released
Thermal discharge, coal charge heat absorption heating, heat carrier are recycled to semicoke cooling stage further through furnace body Outer Tube and absorb heat and be recycled to again
Warm-up phase exchanges heat so on circulate, makes full use of heat, energy-saving, and solid product temperature control.
The embodiment of the invention also provides a kind of pyrolysis installations for flour coal, as shown in figure 8, above-mentioned pyrolysis installation is
It is formed by any of the above-described kind of thin layer pyrolysis oven is successively in parallel, outside the gas vent and furnace body in the side wall surface of above-mentioned thin layer pyrolysis oven
Gas treatment total pipeline is connected to, and the semicoke outside semicoke discharge port and furnace body on the furnace bottom face of above-mentioned thin layer pyrolysis oven handles general pipeline
Road is connected to and enters next process and handled.
Thin layer pyrolysis oven provided by the above embodiment is used below to specified raw material carrying out pyrolysis and is analyzed as a result, to test
The pyrolysis effect of the pyrolysis oven is demonstrate,proved, specific embodiment is as follows:
Embodiment 1
The inner thickness of the thin layer pyrolysis oven of the present embodiment design is 300mm, and pyrolysis oven height is 4000mm, is horizontally disposed with
The quantity in semi open model gas export channel be 4, vertical interval of 4 semi open model gases export channels in vertical direction
For 400mm, it is evenly provided with baffle plate in two heated walls, circulating heat exchange system is provided in furnace；The present embodiment
The structure of thin layer pyrolysis oven is composed of Fig. 2, Fig. 6 a and Fig. 7, referring specifically to Fig. 2, Fig. 6 a and Fig. 7；Test raw materials used coal
Composition be shown in Table 1；Combustion heating chamber is run, feed coal in furnace is pyrolyzed using its heated wall；
By feed coal out of coal feed inlet investment pyrolysis oven, feed coal flows from above to below under the effect of gravity, cocurrent
It is fallen into pyrolysis oven through semi open model gas export channel, in the inner space of the lower part in above-mentioned semi open model gas export channel
Deposited coal charge layer, the inner space that above-mentioned coal charge layer and above-mentioned semi open model gas export the top in channel forms chamber, on
It states chamber and forms whole gas export channel；
The heated wall of pyrolysis oven heats the coal charge of flowing, and coal charge generates after preheating, pyrolysis and semicoke are cooling
Pyrolysis gas and solid product, above-mentioned pyrolysis gas along above-mentioned whole gas export channel from gas vent escape, above-mentioned solid product from
The discharge of semicoke discharge port；
Wherein, 550 DEG C of the maximum temperature of pyrolysis section, pyrolysis time are 30 minutes, after pyrolytic process, are generated to pyrolysis
The content of gas-liquid solid product analyzed；
By analysis: the yield 4.1% of water, gas recovery ratio 8.4%, coal tar oil yield 10.2%, semicoke after pyrolysis
Yield 77.3%；Wherein, solid content is 0.2% in coal tar.
The composition of 1 feed coal of table
Embodiment 2
The present embodiment 2 difference from example 1 is that, pyrolysis maximum temperature be 600 DEG C；
The yield 4.5% of water, gas recovery ratio 10.2%, coal tar oil yield 9.8%, semi-coke yield 75.5%, coal after pyrolysis
Solid content is 0.3% in tar.
Embodiment 3
The present embodiment 3 difference from example 1 is that, be pyrolyzed 550 DEG C of maximum temperature；
The yield 4.2% of water, gas recovery ratio 8.1%, coal tar oil yield 11.1%, semi-coke yield 76.6%, coal after pyrolysis
Solid content is 0.5% in tar.
Embodiment 4
The present embodiment 4 difference from example 1 is that, the raw material of test is oil-sand, and oil-sand composition and property are shown in
Table 2；
The yield 1.0% of water after pyrolysis, gas recovery ratio 3.1% are pyrolyzed oil yield 8.5%, dry sand yield 87.4%, pyrolysis
Solid content is 0.1% in oil.
The composition and property of 2 oil-sand of table
Embodiment 5
The present embodiment 5 difference from example 1 is that, the raw material of test is oil shale, oil shale composition and property
Matter is shown in Table 3；
The yield 11.5% of water after pyrolysis, gas recovery ratio 1.9% are pyrolyzed oil yield 6.3%, tailings yield 80.3%, heat
Solid content is 0.1% in solution oil.
The composition and property of 3 oil shale of table
| Project | Unit | Index |
| Oil content | % | 8.5 |
| Surface water | % | 11.8 |
| Solid content | % | 79.7 |
| Bulk density | kg/m3 | 1180 |
By the thermal decomposition result of the coal charge of embodiment 1- embodiment 5, oil-sand and oil shale raw material it is found that using the present invention
The thin layer pyrolysis oven that embodiment provides is suitble to be pyrolyzed the raw materials such as flour coal, oil-sand and oil shale, the gas, liquid, solid of generation
Phase product yield is than conventional pyrolytic furnace pyrolysis feed products therefrom high income.Thin layer pyrolysis oven provided by the invention can be realized and will be flowed
Dynamic coal charge is sufficiently mixed, and coal charge heat transfer is uniform, is heated evenly, and pyrolysis gas is easier to be discharged, and coal charge can be sufficiently pyrolyzed, gained pyrolysis
Product qualities are preferable.
Place, those skilled in the art can not select from the prior art to the greatest extent in the embodiment of the present invention.
Disclosed above is only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, is appointed
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be with above-mentioned scope of protection of the claims.
Claims (16)
1. a kind of thin layer pyrolysis oven for flour coal, comprising: coal feed inlet, semicoke discharge port, gas vent and combustion heating
Room, which is characterized in that being horizontally disposed in the thin layer pyrolysis oven has semi open model gas to export channel；
The one end in semi open model gas export channel is connected to the gas vent, the other end and with where the gas vent
Wall surface opposite side wall surface in furnace side closely connects；
The top in semi open model gas export channel and furnace top surface where the coal feed inlet are opposite and have spacing,
The semi open model gas exports the lower part in channel and the furnace bottom face where the semicoke discharge port relatively and with spacing；
The heated wall of the semi open model gas export channel and the combustion heating chamber has horizontal space in the horizontal direction, institute
Horizontal space is stated to flow from above to below for coal charge；
The structure in semi open model gas export channel is closed upper part and lower open；
The coal charge layer deposited in the inner space of the lower part in semi open model gas export channel when there is coal charge and described half
The inner space that opening gas exports the top in channel forms chamber, and the chamber constitutes whole gas and exports channel, coal heat
The gas generated is solved to escape along whole gas export channel from the gas vent；
Semi open model gas export channel be it is multiple, multiple semi open model gases export channel from furnace top surface to furnace bottom face,
Direction along vertical furnace bottom surface is arranged successively；
Have on the wall surface of furnace side and export channel one-to-one multiple gas vents respectively with the multiple semi open model gas, each
Semi open model gas export channel all has a gas vent and communicates therewith.
2. a kind of thin layer pyrolysis oven for flour coal according to claim 1, which is characterized in that adjacent two are half-open
The spacing for putting formula gas export channel is 300mm-600mm.
3. a kind of thin layer pyrolysis oven for flour coal according to claim 1, which is characterized in that the semi open model gas
It is inverted V type, the extended of falling V or circular arc type that body, which exports shape of the channel in the cross section in vertical furnace top surface direction,.
4. a kind of thin layer pyrolysis oven for flour coal according to claim 1, which is characterized in that the combustion heating chamber
Heated wall be equipped with multiple baffle plates, the baffle plate is used to strengthen the mixing of high temperature coal charge Yu low temperature coal charge, the baffling
One end of plate is closely connect with heated wall, and the other end is downwardly into coal charge with a baffling angle.
5. a kind of thin layer pyrolysis oven for flour coal according to claim 1, which is characterized in that in vertical furnace top surface
Direction is equipped with heat exchanger tube between furnace top surface and semi open model gas adjacent thereto export channel；In vertical furnace bottom surface
Direction is equipped with lower heat exchanger tube between furnace bottom face and semi open model gas adjacent thereto export channel；The upper heat exchanger tube and
The lower heat exchanger tube is pyrolyzed the pipeline outside furnace body by thin layer and is connected to；
Flowable heat carrier is all had in the upper heat exchanger tube and the lower heat exchanger tube, the heat carrier is gas and/or liquid
Body, the heat carrier by and the upper heat exchanger tube and the lower heat exchanger tube internal circulation flow with coal charge cycle heat exchange；
The endless form of the heat carrier is forced circulation mode or the self-circulation mode as caused by the density contrast of the heat carrier.
6. a kind of thin layer pyrolysis oven for flour coal, comprising: coal feed inlet, semicoke discharge port, gas vent and combustion heating
Room, which is characterized in that being horizontally disposed in the thin layer pyrolysis oven has a gas to export channel；
The one end in gas export channel is connected to the gas vent, the other end and with the furnace side wall surface where the gas vent
Opposite side wall surface closely connects；
The gas exports the top in channel and the furnace top surface where the coal feed inlet relatively and with spacing, the gas
The lower part in channel and the furnace bottom face where the semicoke discharge port are exported relatively and with spacing；
The heated wall of gas export channel and the combustion heating chamber has a horizontal space in the horizontal direction, it is described it is horizontal between
Away from being flowed from above to below for coal charge；
The upper vertical in gas export channel is provided with ventilation pipe；The ventilation pipe and the opposite end seal of furnace top surface
It closes, the other end of the ventilation pipe is open and is inserted into gas export channel；
Gas export channel is the semi open model gas export channel of closed upper part and lower open, when there is coal charge, institute
It states the coal charge layer deposited in the inner space of the lower part in semi open model gas export channel and semi open model gas export is logical
The inner space on the top in road forms chamber, and the chamber constitutes whole gas and exports channel；
Or gas export channel is closed conduit；
There are multiple holes, the gas that pyrolysis of coal generates enters the ventilation by tube wall hole on the tube wall of the ventilation pipe
It is escaped in pipeline and along gas export channel from the gas vent.
7. a kind of thin layer pyrolysis oven for flour coal according to claim 6, which is characterized in that the gas export is logical
Road is located at the lower end of the thin layer pyrolysis oven；The quantity of the ventilation pipe be it is multiple, multiple ventilation pipes are in same vertical
Face.
8. a kind of thin layer pyrolysis oven for flour coal according to claim 6, which is characterized in that the semi open model gas
It is inverted V type, the extended of falling V or circular arc type that body, which exports shape of the channel in the cross section in vertical furnace top surface direction,.
9. a kind of thin layer pyrolysis oven for flour coal according to claim 6, which is characterized in that the combustion heating chamber
Heated wall be equipped with multiple baffle plates, the baffle plate is used to strengthen the mixing of high temperature coal charge Yu low temperature coal charge, the baffling
One end of plate is closely connect with heated wall, and the other end is downwardly into coal charge with a baffling angle.
10. a kind of thin layer pyrolysis oven for flour coal, comprising: coal feed inlet, semicoke discharge port, gas vent and combustion heating
Room, which is characterized in that being horizontally disposed in the thin layer pyrolysis oven has a gas to export channel；
The one end in gas export channel is connected to the gas vent, the other end and with the furnace side wall surface where the gas vent
Opposite side wall surface closely connects；
The gas exports the top in channel and the furnace top surface where the coal feed inlet relatively and with spacing, the gas
The lower part in channel and the furnace bottom face where the semicoke discharge port are exported relatively and with spacing；
The heated wall of gas export channel and the combustion heating chamber has a horizontal space in the horizontal direction, it is described it is horizontal between
Away from being flowed from above to below for coal charge；
The upper vertical in gas export channel is provided with ventilation pipe；Ventilation pipe one end opposite with furnace top surface is set
There is dust cap, the other end of the ventilation pipe is inserted into gas export channel；On the tube body of the ventilation pipe at least
Equipped with a dust cap；
The ventilation pipe intersects with dust cap and the tube wall not contacted with coal charge is equipped with multiple holes；On the ventilation pipe
No dust cap is protected and the tube wall contacted with coal charge is closed；
Gas export channel is the semi open model gas export channel of closed upper part and lower open, when there is coal charge, institute
It states the coal charge layer deposited in the inner space of the lower part in semi open model gas export channel and semi open model gas export is logical
The inner space on the top in road forms chamber, and the chamber constitutes whole gas and exports channel；
Or gas export channel is closed conduit；
The gas that pyrolysis of coal generates is entered in the ventilation pipe and along the ventilation by the tube wall hole of the ventilation pipe
Pipeline enters the gas and exports channel, finally escapes from the gas vent.
11. a kind of thin layer pyrolysis oven for flour coal according to claim 10, which is characterized in that the gas export
Channel is located at the lower end of the thin layer pyrolysis oven；The quantity of the ventilation pipe be it is multiple, multiple ventilation pipes be in it is same hang down
It faces directly；Multiple dust caps are equipped on the tube body of each ventilation pipe；The shape of the dust cap is umbrella.
12. a kind of thin layer pyrolysis oven for flour coal according to claim 10, which is characterized in that the semi open model
It is inverted V type, the extended of falling V or circular arc type that gas, which exports shape of the channel in the cross section in vertical furnace top surface direction,.
13. a kind of thin layer pyrolysis oven for flour coal according to claim 10, which is characterized in that the combustion heating
The heated wall of room is equipped with multiple baffle plates, and the baffle plate is used to strengthen the mixing of high temperature coal charge Yu low temperature coal charge, the folding
One end of flowing plate is closely connect with heated wall, and the other end is downwardly into coal charge with a baffling angle.
14. a kind of pyrolysis installation for flour coal, which is characterized in that the pyrolysis installation is by any one of claim 1-13
A kind of thin layer pyrolysis oven for flour coal is successively in parallel to be formed, the gas vent in the side wall surface of the thin layer pyrolysis oven
It is connected to the gas treatment total pipeline outside furnace body, half outside the semicoke discharge port on the furnace bottom face of the thin layer pyrolysis oven and furnace body
Coke handles total equipment connection.
15. a kind of method for pyrolysis for flour coal, which is characterized in that the method for pyrolysis uses described in claim 1
A kind of thin layer pyrolysis oven for flour coal, the method for pyrolysis the following steps are included:
By feed coal out of coal feed inlet investment pyrolysis oven, feed coal flows from above to below under the effect of gravity, pyrolysis oven
Heated wall heats the coal charge of flowing；
For coal charge when flowing through semi open model gas export channel, semi open model gas export channel is to the coal charge to flow downward
It is shunted and is mixed so that coal charge is heated evenly；
Coal charge is cooling by preheating, pyrolysis and semicoke, generates pyrolysis gas and solid product, the pyrolysis gas is along the whole gas
It exports channel to escape from gas vent, the solid product is discharged from semicoke discharge port.
16. a kind of method for pyrolysis for flour coal, which is characterized in that the method for pyrolysis uses as claimed in claim 6
A kind of thin layer pyrolysis oven for flour coal, the method for pyrolysis the following steps are included:
By feed coal out of coal feed inlet investment pyrolysis oven, feed coal flows from above to below under the effect of gravity；
The heated wall of pyrolysis oven heats the coal charge of flowing, and coal charge is cooling by preheating, pyrolysis and semicoke, generates pyrolysis gas
And solid product；
The gas that pyrolysis of coal generates is entered in the ventilation pipe by the tube wall hole of ventilation pipe, further through the snorkel
Road enters gas export channel and escapes from the gas vent, and the solid product is discharged from semicoke discharge port.
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| CN102703097A (en) * | 2012-03-16 | 2012-10-03 | 中国科学院过程工程研究所 | Dry distillation device for coal with wide particle size distribution and method |
| CN104017593A (en) * | 2014-06-16 | 2014-09-03 | 宋佰盈 | Thin-layer dry distillation gasification device, dry distillation equipment and dry distillation method |
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| CN104017593A (en) * | 2014-06-16 | 2014-09-03 | 宋佰盈 | Thin-layer dry distillation gasification device, dry distillation equipment and dry distillation method |
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