CN105861013A - Pulverized coal pyrolysis dust collecting system internally provided with cyclone dust collector and particle sortable particle bed - Google Patents
Pulverized coal pyrolysis dust collecting system internally provided with cyclone dust collector and particle sortable particle bed Download PDFInfo
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- CN105861013A CN105861013A CN201610453630.3A CN201610453630A CN105861013A CN 105861013 A CN105861013 A CN 105861013A CN 201610453630 A CN201610453630 A CN 201610453630A CN 105861013 A CN105861013 A CN 105861013A
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- pyrolysis
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/024—Dust removal by filtration
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/026—Dust removal by centrifugal forces
Abstract
The invention relates to a pulverized coal pyrolysis dust collecting system internally provided with a cyclone dust collector and a particle sortable particle bed. The dust collecting system comprises a pyrolysis reactor, the cyclone dust collector and the particle bed, wherein the cyclone dust collector and the particle bed are internally arranged in the pyrolysis reactor; the particle bed is arranged at the lower part of the pyrolysis reactor, is fixedly connected on the side wall of the pyrolysis reactor and is arranged at the front end of a pyrolysis gas outlet of the pyrolysis reactor; the particle bed comprises a feed collector, an air inlet end, an air outlet end and a lower discharge hole; an air inlet grid plate structure is arranged at the air inlet end and comprises an air inlet grid plate and a plurality of first baffle plates; an air outlet grid plate structure is arranged at the air outlet end and comprises an air outlet grid plate and a plurality of second baffle plates. The system has the beneficial effects that the system utilizes pyrolytic semi-coke as the filter material; being combined with other dust collecting equipment, the system can achieve the effects of efficiently solving the problem of dust collection of the pulverized coal pyrolysis gas at low cost, reducing the dust content of the pyrolysis gas and ensuring that the dust content of the pyrolysis gas is lower than 50mg/Nm<3>, thus meeting the follow-up treatment requirements of tar.
Description
Technical field
The invention belongs to coal sub-prime cascade utilization field, be specifically related to the dust pelletizing system during pulverized coal pyrolysis, especially
It is that a kind of built-in cyclone dust extractor and granule can the pulverized coal pyrolysis dust pelletizing systems of sorting type grain bed.
Background technology
Low-order coal sub-prime cascade utilization is the key areas of China 13 Coal Chemical Industry, substantial amounts of low especially for China
Rank fine coal, the most effectively utilizes the emphasis becoming research.Taking pyrolytic technique that low-order coal oil gas is taken out, remaining semicoke is again
Going generating or as gasified raw material, contrast with Coal Gasification Technology, invest little, water consumption is low, is that the Coal Clean that China advocates is efficient
The Technology Ways utilized.But during pulverized coal pyrolysis, pyrolysis gas carries substantial amounts of dust granules, during pulverized coal pyrolysis, it is pyrolyzed powder
Burnt and pyrolysis oil gas high temperature ON-LINE SEPARATION is one of main difficult technical of running into of this technique.Fine coal in, low temperature pyrogenation mistake
The dust-laden pyrolysis gas temperature phase transformation high, easy produced in journey.Pyrolysis coke breeze and pyrolysis oil-gas high-temperature ON-LINE SEPARATION effect are undesirable,
Ultimately resulting in the solid content in coal tar higher, oil quality is poor, it is impossible to the quality meeting the further deep processing of coal tar refers to
Mark.
Meanwhile, during pulverized coal pyrolysis, dust-laden pyrolysis gas high-temperature gas-solid ON-LINE SEPARATION is harsher to the requirement of cleaner,
Mainly should meet following condition: (1) is high temperature resistant (500～600 DEG C)；(2) there is good heat insulation effect and corrosion resistance.As
Really heat insulation effect is bad or temperature changes, and in pyrolysis gas, condensible gas knows from experience the tar generating band dust, is attached on and removes
On dirt equipment, acceleration equipment is aging under the high temperature conditions even makes it ineffective；(3) time of staying in cleaner unit is wanted
Short, within the shortest time, remove the dust carried secretly in pyrolysis gas, it is to avoid pyrolysis gas occurs second pyrolysis etc. in cleaner
Side reaction, affects tar quality；(4) under hot conditions, filter material or equipment life to be grown, and easily regenerate, and filter efficiency is high.Therefore,
During pulverized coal pyrolysis, the dust collection method of dust-laden pyrolysis gas and the research and development of key equipment, have become as low temperature pyrogenation field in coal
The problem needing solution badly.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, design and develop a kind of built-in cyclone dust extractor and granule can sorting type
The pulverized coal pyrolysis dust pelletizing system of grain bed, the feature of this system binding reactor itself, utilize pyrolysis char as filter material, and
In conjunction with other cleaners, it is possible to low cost, a dedusting difficult problem for high efficiency solution pulverized coal pyrolysis gas, reduce pyrolysis gas dust-laden
Amount, makes pyrolysis gas dust-laden less than 50mg/Nm3, thus it is low to realize the dust-laden in tar, reaches tar subsequent treatment requirement.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
The invention provides a kind of pulverized coal pyrolysis dust pelletizing system.According to embodiments of the invention, this system includes: pyrolytic reaction
Device, cyclone dust extractor and grain bed, it is characterised in that: described cyclone dust extractor and grain bed are built in described pyrolysis reactor
In, described grain bed is positioned at described pyrolysis reactor bottom and is fixedly connected on the sidewall of described pyrolysis reactor, and cloth
Put the front end of pyrolysis gas outlet at described pyrolysis reactor, wherein: described grain bed includes loading head, inlet end, outlet side
With bottom discharging opening, wherein, described loading head is inclined in described pyrolysis reactor, and the upper end of described loading head is with described
The sidewall of pyrolysis reactor connects, and the lower end of described loading head is connected with screen of giving vent to anger, and described loading head is positioned at described grain bed
Top, for being collected by semicoke granule in inflow grain bed, the bottom of described loading head is provided with grain sorting plate, sorts source of the gas
Being connected with described grain sorting plate by gas passage, described inlet end is air inlet grid plate structure, described air inlet grid plate structure bag
Including air inlet grid plate and multiple first deflection plate, one end of described first deflection plate is connected with described air inlet grid plate, and the other end is along right
Direction, lower section extends as free end, and the interval between adjacent described first deflection plate free end forms described air inlet grid plate
Opening so that the baffling that the opening part at described air inlet grid plate is formed flows toward direction, lower right, and described outlet side is grid of giving vent to anger
Plate structure, described in grid plate structure of giving vent to anger include give vent to anger screen and multiple second deflection plate, one end of described second deflection plate and institute
Stating screen of giving vent to anger to connect, the other end extends as free end along direction, lower left, adjacent described second deflection plate free end it
Between interval formed described in give vent to anger the opening of screen so that the baffling that the opening part at described screen of giving vent to anger is formed is toward upper right side side
To flowing；Described cyclone dust extractor includes that inlet end, gas outlet and discharge nozzle, described inlet end are used for being passed through described pyrolytic reaction
The pyrolysis gas carrying semicoke granule produced in device, the gas outlet of described cyclone dust extractor is by interface channel and described grain bed
Described inlet end connect, for by the pyrolysis gas final dusting through described cyclone dust extractor, wherein, in described interface channel
It is provided with air inlet distribution grid.
Inventor finds, pulverized coal pyrolysis dust pelletizing system according to embodiments of the present invention, takes the heat produced in pyrolytic process
Semicoke carries out dedusting as the filter material of grain bed, and dust collecting process is simple, energy-conservation, and devises the inlet end of grid plate structure and go out
Gas end, controls air inlet, speed of giving vent to anger, and dedusting pressure drop is little, good dedusting effect；And, in conjunction with other cleaners, carry out secondary and remove
Dirt, it is possible to low cost, a dedusting difficult problem for high efficiency solution pulverized coal pyrolysis gas, reduces pyrolysis gas dustiness, makes pyrolysis gas dust-laden
Less than 50mg/Nm3, thus it is low to realize the dust-laden in tar, reaches tar subsequent treatment requirement.
According to embodiments of the invention, described first deflection plate is 15-60 degree with the angle of vertical curve, described second baffling
Plate is 15-60 degree with the angle of vertical curve.
According to embodiments of the invention, described grain bed is plate armature, and described loading head is collection flitch.
According to embodiments of the invention, described grain sorting plate has multiple hole, the sorting that described sorting source of the gas provides
The gas described hole by grain sorting plate, takes away the fine grained in the semicoke on described loading head, and coarse granule enters described
Grain bed.
According to embodiments of the invention, the described bottom discharging opening of described grain bed inserts going out of described pyrolysis gas reactor
In the discharging semicoke of material system, and, control semicoke granule in described grain bed by described pyrolysis reactor load
Translational speed；In the discharging semicoke of the discharge system that the discharge nozzle of described cyclone dust extractor is inserted into described pyrolysis gas reactor.
According to embodiments of the invention, described air inlet distribution grid uses folded plate type distributed architecture, makes pyrolysis gas enter uniformly
Enter grain bed.
According to embodiments of the invention, the gas speed of described sorting gas is 0.5-3m/s, wherein the semicoke granule less than 0.5mm
It is separated.
According to embodiments of the invention, pyrolysis gas is through described air inlet grid plate structure and the flow velocity of described grid plate structure of giving vent to anger
For 0.05-0.5m/s, the spacing of described inlet end and described outlet side is 50-300mm.
According to embodiments of the invention, described pyrolysis reactor includes: charging aperture, pyrolysis gas outlet, discharging opening and accumulation of heat
Formula radial canal, described charging aperture is arranged on the roof of described pyrolysis reactor, and described pyrolysis gas outlet is arranged on described pyrolysis
On the sidewall of room, described heat accumulation type radiant tube is along the short transverse multi-tier arrangement of described reactor, and every layer has many along level
The described heat accumulation type radiant tube that direction is arranged.
In another aspect of the present invention, invention further provides one and utilize pulverized coal pyrolysis dust pelletizing system to carry out powder
Fine coal is added by the method for pyrolysis of coal dedusting, it is characterised in that comprise the following steps: a. by the charging aperture of pyrolysis reactor
In described pyrolysis reactor, in described pyrolysis reactor, complete pyrolytic process；B. the semicoke of generation it is pyrolyzed, by gathering materials
Device, enters grain bed, is piled into filter material；Described filter material in described grain bed is arranged by described grain bed bottom discharging opening
Go out, and discharged by the discharging opening of described pyrolysis reactor；C. the pyrolysis gas being pyrolyzed generation enters cyclone dust extractor from inlet end
In, described pyrolysis gas is carried out rough dusting；D. the pyrolysis gas through rough dusting enters described grain bed from inlet end, to described
Pyrolysis gas carries out further dedusting；E. the pyrolysis gas through further dedusting is discharged through the pyrolysis gas outlet of described pyrolysis reactor.
The beneficial effects of the present invention is:
1) taking the hot semicoke produced in pyrolytic process to carry out dedusting as the filter material of grain bed, dust collecting process is simple, energy-conservation.
2) devising inlet end and the outlet side of grid plate structure, control air inlet, speed of giving vent to anger, dedusting pressure drop is little, and dedusting is imitated
The best.
3) combine built-in cyclone dust extractor, carry out final dusting, it is possible to low cost, high efficiency solution pulverized coal pyrolysis gas
A dedusting difficult problem, reduce pyrolysis gas dustiness, make pyrolysis gas dust-laden less than 50mg/Nm3, thus it is low to realize the dust-laden in tar,
Reach tar subsequent treatment requirement.
4) arranging grain sorting plate on loading head, sorting gas passes through grain sorting plate after uniform, in loading head
In hot semicoke, fine grained is taken away, and thicker granule enters grain bed, reduces the fine grained impact on dust removing effects in semicoke.
Accompanying drawing explanation
Fig. 1 is the overall structure figure of pulverized coal pyrolysis dust pelletizing system of the present invention.
Fig. 2 is the structural representation of cyclone dust extractor of the present invention and grain bed.
Wherein, 1, pyrolysis reactor；2, cyclone dust extractor；21, inlet end；22, gas outlet；23, discharge nozzle；3, granule
Bed；31, loading head；32, inlet end；321, air inlet grid plate；322, the first deflection plate；33, outlet side；331, give vent to anger screen；
332, the second deflection plate；34, bottom discharging opening；35, grain sorting plate；351, sorting gas passage；36, air inlet distribution grid；41, enter
Material mouth；42, pyrolysis gas outlet；43, discharging opening；5, radial canal.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that technical scheme, below in conjunction with specific embodiment to this
Invention is described in further detail.The embodiments described below is exemplary, is only used for explaining the present invention, and is not understood that
For limitation of the present invention.Unreceipted concrete technology or condition in embodiment, according to the skill described by the document in this area
Art or condition or carry out according to product description.
According to an aspect of the present invention, the invention provides a kind of built-in cyclone dust extractor and granule can sorting type granule
The pulverized coal pyrolysis dust pelletizing system of bed, Fig. 1 is the overall structure figure of this pulverized coal pyrolysis dust pelletizing system, as it is shown in figure 1, include that pyrolysis is anti-
Answering device 1, cyclone dust extractor 2 and grain bed 3, wherein, described cyclone dust extractor and grain bed are built in described pyrolysis reactor,
Described grain bed is positioned at described pyrolysis reactor bottom and is fixedly connected on the sidewall of described pyrolysis reactor, and is arranged in
The front end of the pyrolysis gas outlet 42 of described pyrolysis reactor.According to a particular embodiment of the invention, this grain bed profile and with
" the fixing connected mode " of described pyrolytic reaction implement body is not particularly limited, as long as ensureing that what grain bed can be stable is connected to
In pyrolysis reactor.Preferably, described grain bed profile can be body structure, and before and after this body structure, sidewall is along warm
The inner chamber solving reactor extends, and the two ends of described front-rear side walls are fixed with sidewall weld with reactor respectively.Thus, this dedusting
System utilizes built-in cyclone dust extractor in pyrolysis reactor and utilizes the hot semicoke produced in pyrolytic process as filter material
The mode that grain bed combines, and semicoke that granule is bigger, as grain bed bed, solves pulverized coal pyrolysis to utilize sorting to be so incensed that
During the difficult problem of pyrolysis gas dedusting.
According to a particular embodiment of the invention, Fig. 2 is the structural representation of cyclone dust extractor of the present invention and grain bed, such as figure
Shown in 2, described grain bed includes loading head 31, inlet end 32, outlet side 33 and bottom discharging opening 34, the structure of described grain bed
It is not particularly limited, as long as the sidewall within pyrolysis reactor can be fixedly connected on.According to some specific embodiments,
Described grain bed can be plate armature.Wherein, described loading head is inclined in described pyrolysis reactor, described in gather materials
The upper end of device is connected with the sidewall of described pyrolysis reactor, and the lower end of described loading head is connected with screen of giving vent to anger, described loading head
Being positioned at the top of described grain bed, for being collected by semicoke granule in inflow grain bed, the structure of described loading head is not by especially
Limit, as long as the semicoke granule that pyrolysis reactor produces can be collected.According to some specific embodiments, described loading head
Material can be heating resisting metal material, such as steel plate, iron plate etc.；The shape of described loading head can be tabular or disk
Shape, it is preferred that for collection flitch.The bottom of described loading head is provided with grain sorting plate 35, and sorting source of the gas (not shown) passes through gas
Passage is connected with described grain sorting plate.Described inlet end is air inlet grid plate structure, and described air inlet grid plate structure includes air inlet grill
Plate 321 and multiple first deflection plate 322, one end of described first deflection plate is connected with described air inlet grid plate, and the other end is along bottom right
Fang Fangxiang extends as free end, and the interval between adjacent described first deflection plate free end forms opening of described air inlet grid plate
Mouthful so that the baffling that the opening part at described air inlet grid plate is formed flows toward direction, lower right；Described outlet side is screen of giving vent to anger
Structure, described in grid plate structure of giving vent to anger include give vent to anger screen 331 and multiple second deflection plate 332, one end of described second deflection plate
Being connected with described screen of giving vent to anger, the other end extends along direction, lower left as free end, and adjacent described second deflection plate is freely
The opening being spaced described in formation screen of giving vent to anger between end so that the baffling that the opening part at described screen of giving vent to anger is formed is toward upper right
Fang Fangxiang flows.The inlet end of this grid plate structure and outlet side, it is simple to controlling air inlet and speed of giving vent to anger, dedusting pressure drop is little, dedusting
Effective.
According to a particular embodiment of the invention, as in figure 2 it is shown, described cyclone dust extractor includes inlet end 21, gas outlet 22
With discharge nozzle 23, described inlet end is the pyrolysis gas carrying semicoke granule of generation in being passed through described pyrolysis reactor, described
The gas outlet of cyclone dust extractor is connected with the described inlet end 32 of described grain bed by interface channel, and being used for will be through described rotation
The pyrolysis gas final dusting of wind cleaner unit, wherein, is provided with air inlet distribution grid 36 in described interface channel, it is preferred that air inlet is distributed
Folded plate type distributed architecture taked by plate, makes pyrolysis gas more uniform entrance grain bed entrance.Thus, the high temperature produced in pyrolytic process
Pyrolysis gas carries short grained semicoke and enters dedusting at the beginning of built-in cyclone dust extractor is carried out, the pyrolysis gas after cyclone dust extractor together
Enter grain bed and carry out final dusting.
Inventor finds, this pulverized coal pyrolysis dust pelletizing system according to embodiments of the present invention, takes generation in pyrolytic process
Hot semicoke carries out dedusting as the filter material of grain bed, and dust collecting process is simple, energy-conservation, and devise grid plate structure inlet end and
Outlet side, controls air inlet, speed of giving vent to anger, and dedusting pressure drop is little, good dedusting effect；And, in conjunction with other cleaners, carry out secondary
Dedusting, it is possible to low cost, a dedusting difficult problem for high efficiency solution pulverized coal pyrolysis gas, reduces pyrolysis gas dustiness, makes pyrolysis gas contain
Dirt is less than 50mg/Nm3, thus it is low to realize the dust-laden in tar, reaches tar subsequent treatment requirement.
According to a particular embodiment of the invention, the material of described first and second deflection plates, connected mode are the most specifically limited
System, as long as the pyrolysis gas after dedusting can be made to discharge grain bed, according to some specific embodiments, described deflection plate is permissible
For resistant to elevated temperatures material, preferably steel plate；Described deflection plate can be in the way of using fixing connection with described screen of giving vent to anger, preferably
For welding.Described first deflection plate is not particularly limited with the angle of vertical curve, preferably 15-60 degree, described second deflection plate
It is not particularly limited with the angle of vertical curve, preferably 15-60 degree.Thus, screen aperture area ensure that pyrolysis gas passes through
The flow velocity of grid plate structure is the speed of 0.05-0.5m/s, and, the spacing of inlet end and outlet side is preferably 50-300mm, protects
Barrier pyrolysis gas dust removing effects, the furnace pressure of pyrolysis reactor will not be the highest simultaneously.
According to a particular embodiment of the invention, owing in pyrolytic process, semicoke particle diameter is distributed more widely, little granule semicoke enters
After grain bed, both having brought the problem that grain bed pressure drop is big, part fine grained may be pyrolyzed gas and brings out again simultaneously, reduces and removes
Dirt effect.In order to solve this problem, as in figure 2 it is shown, the bottom of loading head of the present invention is provided with grain sorting plate 35, sort gas
Source (not shown) is connected with described grain sorting plate by gas passage 351.There is on described grain sorting plate multiple hole, described
The sorting gas that sorting source of the gas the provides described hole by grain sorting plate, the fine grained band in the semicoke on described loading head
Walking, coarse granule enters described grain bed.Thus, sorting gas passes through grain sorting plate after uniform, the hot semicoke in loading head
Middle fine grained is taken away.Sorting gas gas speed be not particularly limited, it is preferred that by arrange sorting gas gas speed be 0.5-3m/s, by little
Semicoke granule in 0.5mm can be separated, and improves dust removing effects.
According to a particular embodiment of the invention, in order to not make the pyrolysis gas through rough dusting mix with dust-laden pyrolysis gas,
After asking pyrolysis gas to enter cyclonic separation, the material pipe of each dust pelletizing system is all inserted in discharging semicoke.As it is shown in figure 1, described granule
In the discharging semicoke of the discharge system that the described bottom discharging opening 34 of bed inserts described pyrolysis gas reactor, and, by described
Pyrolysis reactor load controls the translational speed of semicoke granule in described grain bed；The discharge nozzle 23 of described cyclone dust extractor
In the discharging semicoke of the discharge system being inserted into described pyrolysis gas reactor.Thus, the high-temperature semi-coke produced in pyrolytic process is led to
Cross loading head and enter accumulation in grain bed, and by the translational speed of pyrolysis reactor load control grain bed, dust-laden
Pyrolysis gas enters from the inlet end of grain bed, by after baffling and particle filtering from the outlet side of grain bed out, it is achieved that heat
The dedusting vented one's spleen.
According to a particular embodiment of the invention, as it is shown in figure 1, described pyrolysis reactor also includes: charging aperture 41, pyrolysis gas
Outlet 42, discharging opening 43 and heat accumulation type radiant tube 5, described charging aperture is arranged on the roof of described pyrolysis reactor, described heat
Outlet of venting one's spleen is arranged on the sidewall of described pyrolysis chamber, and described heat accumulation type radiant tube is along the short transverse laminates of described reactor
Putting, every layer has the many described heat accumulation type radiant tubes arranged in the horizontal direction.Thus, raw material enters from the top of pyrolysis reactor
Material mouth enters, and utilizes descending from gravity, is heated by radial canal, pyrolytic reaction occurs, discharges pyrolysis gas and semicoke.
In another aspect of the present invention, the invention provides one and utilize foregoing pulverized coal pyrolysis dust pelletizing system to enter
The method of row pulverized coal pyrolysis dedusting.According to embodiments of the invention, the method may comprise steps of:
A. fine coal is joined in described pyrolysis reactor by the charging aperture of pyrolysis reactor, in described pyrolysis reactor
Complete pyrolytic process.According to embodiments of the invention, described fine coal enters in described pyrolysis reactor by described charging aperture,
After described heat accumulation type radiant tube heats, there is pyrolytic reaction in heated fine coal in pyrolysis reactor, produce pyrolysis gas with
Semicoke granule.
B. it is pyrolyzed the semicoke of generation, by loading head, enters grain bed, be piled into filter material；Institute in described grain bed
State filter material to be discharged by described grain bed bottom discharging opening, and discharged by the discharging opening of described pyrolysis reactor.According to this
Inventive embodiment, the semicoke granule that described pyrolysis reactor produces is collected through the loading head of described grain bed, enters into described
Grain bed, and pile up in described grain bed, for the pyrolysis gas in described grain bed being carried out dust removal and filtration, wherein,
The sorting gas that described sorting source of the gas the provides described hole by grain sorting plate, the fine grained in the semicoke on described loading head
Taking away, coarse granule enters described grain bed.Thus, sorting gas passes through grain sorting plate after uniform, the heat in loading head half
In Jiao, fine grained is taken away.Semicoke granule in described grain bed gradually moves down along described grain bed, by described grain bed
Bottom discharging opening enters described pyrolysis reactor, is then discharged by the discharging opening of described pyrolysis reactor, and can pass through
The load of described pyrolysis reactor controls the translational speed of semicoke granule in described grain bed.
C. the pyrolysis gas being pyrolyzed generation enters cyclone dust extractor from inlet end, and described pyrolysis gas is carried out rough dusting.
According to embodiments of the invention, described cyclone dust extractor includes inlet end 21, gas outlet 22 and discharge nozzle 23, and described inlet end is used
The pyrolysis gas carrying semicoke granule produced in being passed through described pyrolysis reactor, the gas outlet of described cyclone dust extractor is by even
Connect road to be connected with the described inlet end of described grain bed, be used for the pyrolysis gas final dusting through described cyclone dust extractor,
Wherein, it is provided with air inlet distribution grid in described interface channel, it is preferred that air inlet distribution grid takes folded plate type distributed architecture, makes pyrolysis
Gas more uniform entrance grain bed entrance.Thus, the high-temperature hot produced in pyrolytic process is vented one's spleen and is carried short grained semicoke together
Enter built-in cyclone dust extractor and carry out just dedusting.
D. the pyrolysis gas through rough dusting enters described grain bed from inlet end, removes described pyrolysis gas further
Dirt.According to embodiments of the invention, described grain bed includes loading head 31, inlet end 32, outlet side 33 and bottom discharging opening 34,
Wherein, described loading head is inclined in described pyrolysis reactor, the upper end of described loading head and described pyrolysis reactor
Sidewall connects, and the lower end of described loading head is connected with screen of giving vent to anger, and described loading head is positioned at the top of described grain bed, and being used for will
Semicoke granule collects in inflow grain bed, and the bottom of described loading head is provided with grain sorting plate, and sorting source of the gas passes through gas passage
It is connected with described grain sorting plate.Described inlet end is air inlet grid plate structure, and described air inlet grid plate structure includes air inlet grid plate 321
With multiple first deflection plates 322, one end of described first deflection plate is connected with described air inlet grid plate, and the other end is along direction, lower right
Extending as free end, the interval between adjacent described first deflection plate free end forms the opening of described air inlet grid plate, makes
Must flow toward direction, lower right at the baffling that the opening part of described air inlet grid plate is formed；Described outlet side is grid plate structure of giving vent to anger,
Described grid plate structure of giving vent to anger includes give vent to anger screen 331 and multiple second deflection plate 332, and one end of described second deflection plate is with described
Screen of giving vent to anger connects, and the other end extends as free end along direction, lower left, between adjacent described second deflection plate free end
Interval formed described in give vent to anger the opening of screen so that the baffling that the opening part at described screen of giving vent to anger is formed is toward direction, upper right side
Flowing.Thus, the pyrolysis gas of rough dusting passes through interface channel and the institute being input to grain bed through the gas outlet of cyclone dust extractor
State inlet end, and in grain bed, carry out final dusting, it is preferred that screen aperture area ensure that pyrolysis gas is tied through screen
The flow velocity of structure is the speed of 0.05-0.5m/s, to ensure pyrolysis gas dust removing effects.
E. the pyrolysis gas through further dedusting is discharged through the pyrolysis gas outlet of described pyrolysis reactor.
Utilize pyrolytic reaction system that Australia's brown coal are processed, add grain bed dedusting and remove with only taking whirlwind
The contrast of dirt device is shown in Table 1.
Table 1: Australia's brown coal pyrolysis processing dedusting contrast table
| Sequence number | Pyrolysis gas dedusting method | Dustiness after dedusting |
| 1 | Cyclone dust removal | 125mg/Nm3 |
| 2 | Whirlwind+grain bed dedusting | 37mg/Nm3 |
Utilize pyrolytic reaction system that Indonesia's brown coal are processed, add grain bed dedusting and only take the right of cyclone dust extractor
Ratio is shown in Table 2.
Table 2: Indonesia's brown coal pyrolysis processing dedusting contrast table
| Sequence number | Pyrolysis gas dedusting method | Dustiness after dedusting |
| 1 | Cyclone dust removal | 132mg/Nm3 |
| 2 | Whirlwind+grain bed dedusting | 34mg/Nm3 |
In describing the invention, it is to be understood that term " first ", " second " are only used for describing purpose, and are not understood that
For indicating or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can express or implicitly include one or more this feature.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, in can being two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the 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.And, the specific features of description, structure, material or feature can be arbitrary
Individual or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification, simultaneously for one of ordinary skill in the art, according to the think of of the application
Think, the most all will change.
Claims (10)
1. a pulverized coal pyrolysis dust pelletizing system, including pyrolysis reactor, cyclone dust extractor and grain bed, it is characterised in that: described
Cyclone dust extractor and grain bed are built in described pyrolysis reactor, and described grain bed is positioned at described pyrolysis reactor bottom and consolidates
Surely it is connected on the sidewall of described pyrolysis reactor, and is arranged in the front end of the pyrolysis gas outlet of described pyrolysis reactor, its
In:
Described grain bed includes loading head, inlet end, outlet side and bottom discharging opening；Wherein, described loading head is inclined at
In described pyrolysis reactor, the upper end of described loading head is connected with the sidewall of described pyrolysis reactor, the lower end of described loading head
Screen is connected with giving vent to anger, and described loading head is positioned at the top of described grain bed, for semicoke granule being collected in inflow grain bed,
The bottom of described loading head is provided with grain sorting plate, and sorting source of the gas is connected with described grain sorting plate by gas passage；Described
Inlet end is air inlet grid plate structure, and described air inlet grid plate structure includes air inlet grid plate and multiple first deflection plate, described first folding
One end of stream plate is connected with described air inlet grid plate, and the other end extends as free end, adjacent described first along direction, lower right
Interval between deflection plate free end forms the opening of described air inlet grid plate so that the opening part at described air inlet grid plate is formed
Baffling flows toward direction, lower right；Described outlet side is grid plate structure of giving vent to anger, described in give vent to anger grid plate structure include giving vent to anger screen and
Multiple second deflection plates, one end of described second deflection plate is connected with described screen of giving vent to anger, and the other end extends along direction, lower left
As free end, the opening being spaced described in formation screen of giving vent to anger between adjacent described second deflection plate free end so that
The baffling that the opening part of described screen of giving vent to anger is formed flows toward direction, upper right side；
Described cyclone dust extractor includes that inlet end, gas outlet and discharge nozzle, described inlet end are used for being passed through described pyrolysis reactor
The pyrolysis gas carrying semicoke granule of interior generation, the gas outlet of described cyclone dust extractor is by interface channel and described grain bed
Described inlet end connects, and for by the pyrolysis gas final dusting through described cyclone dust extractor, wherein, sets in described interface channel
There is air inlet distribution grid.
Pulverized coal pyrolysis dust pelletizing system the most according to claim 1, it is characterised in that: described first deflection plate and vertical curve
Angle is 15-60 degree, and described second deflection plate is 15-60 degree with the angle of vertical curve.
Pulverized coal pyrolysis dust pelletizing system the most according to claim 1, it is characterised in that: described grain bed is plate armature,
Described loading head is collection flitch.
4. according to the pulverized coal pyrolysis dust pelletizing system according to any one of claim 1-3, it is characterised in that: described grain sorting plate
On there is multiple hole, the sorting gas that described sorting source of the gas the provides described hole by grain sorting plate, on described loading head
Fine grained in semicoke is taken away, and coarse granule enters described grain bed.
5. according to the pulverized coal pyrolysis dust pelletizing system according to any one of claim 1-3, it is characterised in that: the institute of described grain bed
State in the discharging semicoke of the discharge system that bottom discharging opening inserts described pyrolysis gas reactor, and, by described pyrolytic reaction
Device load controls the translational speed of semicoke granule in described grain bed；The discharge nozzle of described cyclone dust extractor is inserted into described
In the discharging semicoke of the discharge system of pyrolysis gas reactor.
6. according to the pulverized coal pyrolysis dust pelletizing system according to any one of claim 1-3, it is characterised in that: described air inlet distribution grid
Use folded plate type distributed architecture, make pyrolysis gas uniformly enter grain bed.
Pulverized coal pyrolysis dust pelletizing system the most according to claim 4, it is characterised in that: the gas speed of described sorting gas is 0.5-
3m/s, wherein the semicoke granule less than 0.5mm is separated.
8. according to the pulverized coal pyrolysis dust pelletizing system according to any one of claim 1-3, it is characterised in that: pyrolysis gas is through described
The flow velocity of air inlet grid plate structure and described grid plate structure of giving vent to anger is 0.05-0.5m/s, between described inlet end and described outlet side
Away from for 50-300mm.
9. according to the pulverized coal pyrolysis dust pelletizing system according to any one of claim 1-3, it is characterised in that: described pyrolysis reactor
Including: charging aperture, pyrolysis gas outlet, discharging opening and heat accumulation type radiant tube, described charging aperture is arranged on described pyrolysis reactor
On roof, described pyrolysis gas outlet is arranged on the sidewall of described pyrolysis chamber, and described heat accumulation type radiant tube is along described reactor
Short transverse multi-tier arrangement, every layer has the many described heat accumulation type radiant tubes arranged in the horizontal direction.
10. the pulverized coal pyrolysis dust pelletizing system that a kind utilizes according to any one of claim 1-9 carries out the side of pulverized coal pyrolysis dedusting
Method, it is characterised in that comprise the following steps:
A. fine coal is joined in described pyrolysis reactor by the charging aperture of pyrolysis reactor, in described pyrolysis reactor
Complete pyrolytic process；
B. it is pyrolyzed the semicoke of generation, by loading head, enters grain bed, be piled into filter material；Described mistake in described grain bed
Filtrate is discharged by described grain bed bottom discharging opening, and is discharged by the discharging opening of described pyrolysis reactor；
C. the pyrolysis gas being pyrolyzed generation enters cyclone dust extractor from inlet end, and described pyrolysis gas is carried out rough dusting；
D. the pyrolysis gas through rough dusting enters described grain bed from inlet end, and described pyrolysis gas is carried out further dedusting；
E. the pyrolysis gas through further dedusting is discharged through the pyrolysis gas outlet of described pyrolysis reactor.
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| CN201610453630.3A CN105861013A (en) | 2016-06-22 | 2016-06-22 | Pulverized coal pyrolysis dust collecting system internally provided with cyclone dust collector and particle sortable particle bed |
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| CN201610453630.3A CN105861013A (en) | 2016-06-22 | 2016-06-22 | Pulverized coal pyrolysis dust collecting system internally provided with cyclone dust collector and particle sortable particle bed |
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