CN106753492A - A kind of internal heat type roller accumulation of heat wall pulverized coal pyrolysis technique and device - Google Patents
A kind of internal heat type roller accumulation of heat wall pulverized coal pyrolysis technique and device Download PDFInfo
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- CN106753492A CN106753492A CN201710044053.7A CN201710044053A CN106753492A CN 106753492 A CN106753492 A CN 106753492A CN 201710044053 A CN201710044053 A CN 201710044053A CN 106753492 A CN106753492 A CN 106753492A
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- 239000003245 coal Substances 0.000 title claims abstract description 245
- 238000000197 pyrolysis Methods 0.000 title claims abstract description 136
- 238000009825 accumulation Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000004821 distillation Methods 0.000 claims abstract description 155
- 238000001035 drying Methods 0.000 claims abstract description 50
- 239000002994 raw material Substances 0.000 claims abstract description 32
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000008187 granular material Substances 0.000 claims abstract description 12
- 230000008676 import Effects 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 177
- 239000000428 dust Substances 0.000 claims description 49
- 239000007787 solid Substances 0.000 claims description 37
- 239000002245 particle Substances 0.000 claims description 31
- 239000002737 fuel gas Substances 0.000 claims description 29
- 238000012546 transfer Methods 0.000 claims description 27
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- 239000001301 oxygen Substances 0.000 claims description 23
- 229910052760 oxygen Inorganic materials 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
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- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000012159 carrier gas Substances 0.000 claims description 8
- 239000003034 coal gas Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 7
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- 239000000203 mixture Substances 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
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- 239000011280 coal tar Substances 0.000 description 2
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- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
-
- 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
- C10B47/20—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion with moving charge according to the moving bed type
-
- 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
- C10B47/28—Other processes
- C10B47/30—Other processes in rotary ovens or retorts
-
- 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
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
Abstract
The invention discloses a kind of internal heat type roller accumulation of heat wall pulverized coal pyrolysis device, including raw material drying system, pyrolysis system and semicoke cooling system；The raw material drying outlet of described raw material drying system is connected with the import of pyrolysis system, the outlet of pyrolysis system is connected with semicoke cooling system, semicoke cooling system is connected with raw material drying system, described pyrolysis system includes pre-distillation system and distillation system, and described pre-distillation system is connected with distillation system circulation.The internal heat type roller accumulation of heat wall pulverized coal pyrolysis technique and device so that pyrolysis oil gas dedusting is associated with process material, makes full use of the high temperature granular material of retort process itself, forms Bed Filtration system, complete pyrolysis oil gas self-cleaning process.
Description
Technical field
The invention belongs to Coal Chemical Industry (and oil shale) pyrolysis art, and in particular to a kind of internal heat type roller accumulation of heat wall fine coal heat
Solution technique and device.
Background technology
China is coal resources big country, and prerequisite resources supplIes determine that the energy strategy based on coal is selected, but I
State is relatively single to the utilization ways of coal resources, and coal fired power generation occupies the consumption of coal ratio umber one always, while before this in coal
It is improper to pollutant emission control during charcoal exploitation, processing, utilization, cause coal to become the main of China's environmental pollution
Source.Pyrolysis of coal is to realize coal resourcesization using the important means with coal clean utilization.Turned with the leading sub-prime of pyrolysis of coal
Change multi-production process technology, the chemical resource and clean coal of high added value with less energy consumption, can be obtained, realize coal sub-prime
High-efficiency comprehensive utilization.At present, the research both at home and abroad to pulverized coal pyrolysis technology is more, but the technique of maturation and is available for large-scale application
The technology of popularization is few, still in experiment or demonstration phase.
CN203976719U is disclosed in a kind of internal heat type fine coal destructive distillation rotary furnace and fine coal destructive distillation device, the device and installed
There is heat carrier, the heat carrier can store heat as heat storage, by the rotation of horizontal body of heater, fine coal is changed with heat carrier
Heat and then realize pulverized coal pyrolysis.The covering device includes two sets of duplicate above-mentioned pyrolysis rotary stoves, two sets of rotary furnaces work in turn
Make, when pulverized coal pyrolysis are carried out in wherein a set of internal heat type destructive distillation rotary furnace, in another set of internal heat type fine coal destructive distillation rotary furnace
Heat smoke is passed through, heat carrier is heated, by way of commutation, formation moves in circles, and realizes continuous feed, discharge.Should
Device internal structure is complicated, and production equipment cost is high, for the key issue-gas solid separation of pulverized coal pyrolysis, does not have proposition to be directed to
Property solution.
CN1066459A discloses a kind of low middle temperature fast pyrolysis process of external-heat in rotary furnace gas heat carrier.The technique
Principle is that drying, pyrolysis and the cooling of material coal are arranged in three rotary furnaces and are respectively carried out, and its drying is added using internal heat type
Heat, pyrolysis is using external-heat heating.The process equipment cost is high, and technological process is complicated, and can only process particle diameter for 3-
The material coal of 30mm, the fine coal for 0-3mm cannot be processed.
Above-mentioned patent make use of the rotary furnace to carry out pyrolysis of coal reaction, the heat storage rotation heating being respectively adopted or rotary furnace
, all there is complex process in external heat-exchanging technology, heat exchange efficiency is poor, and capacity usage ratio is low, the shortcoming of low production efficiency.It is same with this
When, existing process uses screw feeding device when destructive distillation feeds, and reaches the purpose of charging outlet dedusting, so
And screw feeding device when pushing solid particle by spiral organ level, can make solid particle phase due to own structural characteristics
Mutually extruding, produces friction, causes partial particulate fragmentation, produces more dust, directly affects the safety of pyrolytic process device
Stable operation.The dust collecting process device being adapted with process material characteristic is set, is that can pulverized coal pyrolysis technology into
The key point of work(application.
The content of the invention
In order to solve the problem and shortage of prior art presence, the invention provides a kind of internal heat type roller accumulation of heat wall fine coal
Pyrolytic process and device so that pyrolysis oil gas dedusting is associated with process material, makes full use of the height of retort process itself
Warm granule materials, form Bed Filtration system, complete pyrolysis oil gas self-cleaning process.
The present invention is to be achieved through the following technical solutions：
A kind of internal heat type roller accumulation of heat wall pulverized coal pyrolysis device, including the cooling of raw material drying system, pyrolysis system and semicoke
System；The raw material drying outlet of described raw material drying system is connected with the import of pyrolysis system, the outlet of pyrolysis system and half
Burnt cooling system is connected, and semicoke cooling system is connected with raw material drying system, described pyrolysis system including pre-distillation system with
Distillation system, described pre-distillation system is connected with distillation system circulation.
Described pre-distillation system includes pre-distillation device and pre-distillation coal batcher；Described pre-distillation device includes square-box-shaped
Cylinder；Square-box-shaped cylinder upper end is upper end cover, and lower end is bottom end cover, and square-box-shaped inner barrel is provided with multiple J-type hardwares,
J-type hardware parallel misalignment is arranged, and air-flow gateway is formd in the horizontal plane, on the vertical plane by pre-distillation device inside side
Box cavity, is separated into the gas passage of reciprocal alternate air-flow bar shaped and the solid tunnel of moisture-free coal bar shaped, in pre-distillation device
Portion top is additionally provided with tripper, and the raw material drying outlet of described raw material drying system is entered with pre-distillation device top dry feedstock
Mouth is connected, and the pre-distillation coal export of pre-distillation device is connected with pre-distillation coal batcher, and pre-distillation coal batcher enters with distillation system
Mouth is connected.
Hang down the side's of being all cone structure at the top and bottom of described square-box-shaped cylinder, the porch of air-flow bar shaped gas passage
Nogata is provided with collecting box to dispersion case, exit vertical direction is provided with.
Described distillation system includes dry distiller and inspissator；Dry distiller is the roller frame that horizontal tilt is placed, the rolling
Cylinder has onion model structure, and dry distiller includes the outer cylinder body that horizontal tilt is placed, and outer cylinder body inner surface closely attaches set successively
There are the thermal insulation layer for being incubated and the accumulation of heat wall for high-temperature heat accumulation, the round platform that concave inward structure is set on accumulation of heat wall inner surface is blind
Hole, round platform blind hole is in equilateral triangle arrangement, and the axis of round platform blind hole is perpendicular to accumulation of heat wall inner surface, round platform blind hole axial cross section
In the small trumpet type of outer imperial palace, in the fan-shaped uniform multiple short flamed burners of dry distiller circular cross-section top area, short flame
Burner be connected on fuel gas pipe row and oxygen hose row, fuel gas pipe row and oxygen hose arrange with from the next combustion in dry distiller outside
Material tracheae is connected with oxygen hose, and the charging aperture of dry distiller is connected with pre-distillation coal batcher, dry distiller gaseous phase outlet and inspissator
It is connected, inspissator is connected with the entrance of the gas passage of the air-flow bar shaped of pre-distillation device, inspissator inside sets multiple efficient rotaries
Stream deduster, the semicoke outlet of dry distiller is connected with semicoke cooling system.
Described raw material drying system includes feed coal surge bunker, feed coal batcher, drier and dries gas deduster；
The bottom discharge mouthful of feed coal surge bunker is connected with feed coal batcher entrance, and the outlet of feed coal batcher is connected with drier；
Described drier is connected with the dry feedstock import of pre-distillation device, and the outlet of drier one end is through drying gas deduster and semicoke
Cooling system entrance is connected, and the outlet of semicoke cooling system is connected with another end entrance of drier.
Described drier is the circular tube structure that horizontal tilt is placed, and drier includes outer cylinder body, moving plate and falls
Material hole；Outer cylinder body is internally provided with the moving plate of helical structure, is provided with material-dropping hole on moving plate, and material-dropping hole a diameter of 30~
60mm。
Described semicoke cooling system includes semicoke cooler, semicoke material discharging machine, hot blast sack cleaner, circulating air blower fan
And recycle gas cooler；Described semicoke cooler is connected with the semicoke outlet of dry distiller, and semicoke cooler bottom is provided with half
Burnt material discharging machine, dries gas deduster and is connected to circulating air fans entrance, and circulating air fan outlet is connected with recycle gas cooler, follows
Ring Gas Cooler is connected with semicoke cooler, and semicoke cooler is connected through hot blast sack cleaner with drier.
Described semicoke cooler is square-box-shaped structure, and top and bottom are square cone structure, and semicoke cooler includes upper
End cap, square-box-shaped cylinder, bottom end cover, gas flow tube, shutter board and collecting box；The upper end of square-box-shaped cylinder is provided with upper end cover, under
End is provided with bottom end cover, and horizontal direction is inserted with the gas flow tube through square-box-shaped cylinder, and gas flow tube radial level both sides are provided with out
Gas port, sets shutter board at gas outlet, shutter board both sides are provided with collecting box.
A kind of internal heat type roller accumulation of heat wall pulverized coal pyrolysis technique, comprises the following steps：
1) pre-distillation device (4) is entered by top entry through the moisture-free coal of dried 75~100 DEG C of raw material drying system, is entered
Enter the moisture-free coal inside pre-distillation device to be dispersed in each solid tunnel through tripper, into the moisture-free coal in solid tunnel along logical
Road is slowly moved down, and during moving down, 500~650 DEG C of pyrolysis oil gas sequentially pass through dispersion case, gas passage,
The bed solid particle gap of transverse crossing moisture-free coal, and moisture-free coal direct contact heat transfer, temperature is progressively from top to bottom for moisture-free coal
300~420 DEG C of concurrent first portion pyrolytic reactions, volatilization gas and pyrolysis air-fuel mixture are increased to, through gas passage in collecting box
Pre-distillation device is left after convergence, the temperature of the pyrolysis oil gas after its purification is 180~250 DEG C；At the same time pyrolysis oil gas entrainment
Dust be trapped within bed particulate interspaces；Arranged by discharging opening after 300~420 DEG C of final collections through bottom end cover of pre-distillation coal
Go out；
2) after the pre-distillation coal of pre-distillation device discharge is through pre-distillation batcher regulation flow, entered by dry distiller one end, done
The cylinder for evaporating device rotates under electric driving mechanism, and mean speed is 5~10r/min；Cylinder is located at when dry distiller cylinder rotates
The burner of the fan-shaped arrangement of internal upper part is 35 using the fuel gas and purity after purification with respect to cylinder transfixion, burner
~99.9% oxygen is burnt, and burning produces flame to directly heat the region covered by the accumulation of heat wall of burner, accumulation of heat
The temperature of wall is 950~1350 DEG C, and the high-temperature area of accumulation of heat wall is direct by the pre-distillation coal after rotation with dry distiller cylinder bottom
Contact, pre-distillation coal is subject to the radiant heat transfer of accumulation of heat wall, gradually high to 480~630 DEG C of temperature, pre-distillation coal that pyrolytic reaction occurs
Oil gas is volatilized, the flue gas produced with burner combustion mixes, and carry poor dust granules discharge dry distiller secretly；Discharge dry distiller
Pyrolysis oil gas enters inspissator, by after the cyclone removing part dust in inspissator, pyrolysis oil gas enters in pre-distillation device
As the hot carrier gas of pre-distillation process, rotated again to burner overlay area by the accumulation of heat wall after radiant heat transfer and added
Heat, and be pyrolyzed 550~650 DEG C of semicokes for producing and export discharge through cylinder body bottom；
3) the hot semicoke of 550~650 DEG C of discharge enters semicoke cooler by top entry, and hot semicoke is slow from top to bottom
Move down, circulating air into the gas flow tube being horizontally inserted is carried out from semicoke cooler, gas flow tube radial level both sides are provided with outlet
Hole, circulating air passes through the bed for moving from top to bottom by venthole, and heat exchange, the gas after heat exchange occur with hot semicoke directly contact
Flow and discharged after converging, discharge hot blast temperature is 200~250 DEG C, enter dry after removing semicoke dust by hot blast sack cleaner
Dry device after removing coal dust, increases into gas deduster is dried as Drying Source, the dry wind for having dried through recycle gas cooler
Pressure Posterior circle is used, and after the circulating air after supercharging is cooled to 32~45 DEG C with the nitrogen of new supplement through recycle gas cooler, is entered
Semicoke cooler is cooled to the semicoke discharge after 80~100 DEG C of semicokes are collected through bottom end cover by discharging opening as cooling medium
Discharged after machine regulation flow.
Step 1) it is further comprising the steps of before：
After 0~20mm feed coals are through feed coal surge bunker and feed coal batcher regulation feed coal inlet amount, by drier
One end enter, the cylinder of drier rotate under electric driving mechanism, and mean speed is 10~15r/min, dryer cartridge
Drive the moving plate in being arranged on to rotate together during rotation, make feed coal moving in drier, axially enter along dryer cartridge
The hot blast that enters and the feed coal of moving realize contact heat-exchanging, and take away the steam of volatilization, feed coal is heated to 75 by normal temperature~
100 DEG C turn into moisture-free coal, and pre-distillation device is entered by the other end of drier；
Step 3) also include afterwards：
The pyrolysis oil gas that pyrolysis installation is produced cold bulging tar recovery method treatment, the coal gas after treatment one known to
It is allocated as the fuel gas for dry distiller.
Compared with prior art, the present invention has following beneficial technique effect：
Internal heat type roller accumulation of heat wall pulverized coal pyrolysis technique and device that the present invention is provided so that pyrolysis oil gas dedusting and technique
Process materials are associated, and make full use of the high temperature granular material of retort process itself, form Bed Filtration system, complete pyrolysis
Oil gas self-cleaning process.
Brief description of the drawings
Fig. 1 is process chart of the invention, wherein 1 is feed coal surge bunker, 2 is feed coal batcher, and 3 is drying
Device, 4 is pre-distillation device, and 5 is pre-distillation coal batcher, and 6 is dry distiller, and 7 is inspissator, and 8 is semicoke cooler, and 9 arrange for semicoke
Material machine, 10 is hot blast sack cleaner, and 11 to dry gas deduster, and 12 is circulating air blower fan, and 13 is recycle gas cooler, and a is
Feed coal, b is moisture-free coal, and c is pre-distillation coal, and d is hot semicoke, and e is oxygen, and f is fuel gas, and g is pyrolysis oil gas, and h is purification
Pyrolysis oil gas afterwards, i is hot blast, and j is dry wind, and k is circulating air.
Fig. 2 is dryer configuration schematic diagram, and Fig. 3 is dryer cartridge cross section structure schematic diagram, and wherein 3-1 is outer cylinder body,
3-2 is moving plate, and 3-3 is material-dropping hole.
Fig. 4 is pre-distillation device structural representation, and wherein 4-1 is upper end cover, and 4-2 is square-box-shaped cylinder, and 4-3 is bottom end cover,
4-4 is tripper, and 4-5 is J-type hardware, and 4-6 is solid tunnel, and 4-7 is gas passage.
Fig. 5 is dry distiller cylinder cross section structure schematic diagram, and Fig. 6 is dry distiller accumulation of heat wall floor map, and wherein 6-1 is outer
Cylinder, 6-2 is thermal insulation layer, and 6-3 is accumulation of heat wall, and 6-4 is arranged for fuel gas pipe, and 6-5 is arranged for oxygen hose, and 6-6 is burner, and 6-7 is
Round platform blind hole.
Fig. 7 is semicoke cooler construction schematic diagram, and 8-1 is upper end cover, and 8-2 is square-box-shaped cylinder, 8-3 bottom end covers, and 8-4 is
Gas flow tube, 8-5 is shutter board, and 8-6 is collecting box.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Referring to Fig. 1 to Fig. 7, a kind of internal heat type roller accumulation of heat wall pulverized coal pyrolysis device, including raw material drying system, pyrolysis system
System and semicoke cooling system；The raw material drying outlet of described raw material drying system is connected with the import of pyrolysis system, pyrolysis system
The outlet of system is connected with semicoke cooling system, and semicoke cooling system is connected with raw material drying system, and described pyrolysis system includes
Pre-distillation system and distillation system, described pre-distillation system are connected with distillation system circulation.
Wherein, referring to 1,4, described pre-distillation system includes pre-distillation device 4 and pre-distillation coal batcher 5；Described is pre-
Dry distiller 4 includes square-box-shaped cylinder 4-2；Square-box-shaped cylinder 4-2 upper ends are upper end cover 4-1, and lower end is bottom end cover 4-3, square-box-shaped
Cylinder 4-2 is internally provided with multiple J-type hardware 4-5, and the arrangement of J-type hardware parallel misalignment is formd in the horizontal plane
Air-flow gateway, on the vertical plane by the inside square-box-shaped cavity of pre-distillation device 4, is separated into the gas of reciprocal alternate air-flow bar shaped
The passage 4-7 and solid tunnel 4-6 of moisture-free coal bar shaped, the inner tip of pre-distillation device 4 is additionally provided with tripper 4-4, described original
Expect that the raw material drying outlet of drying system is connected with the top dry feedstock import of pre-distillation device, the pre-distillation coal of pre-distillation device 4 goes out
Mouth is connected with pre-distillation coal batcher 5, and pre-distillation coal batcher 5 is connected with distillation system entrance.Wherein, described square chest type tube
The side's of being all cone structure at the top and bottom of body 4-2, the porch vertical direction of air-flow bar shaped gas passage 4-7 is provided with dispersion
Case, exit vertical direction is provided with collecting box.
Referring to Fig. 1, Fig. 5 and Fig. 6, described distillation system includes dry distiller 6 and inspissator 7；Dry distiller 6 is horizontal tilt
The roller frame of placement, the roller has onion model structure, and dry distiller 6 includes the outer cylinder body 6-1 that horizontal tilt is placed, outer barrel
Body 6-1 inner surfaces closely attach be provided with the thermal insulation layer 6-2 for the being incubated and accumulation of heat wall 6-3 for high-temperature heat accumulation successively, are storing
The round platform blind hole 6-7 of concave inward structure is set on hot wall inner surface, and round platform blind hole is in equilateral triangle arrangement, the axis of round platform blind hole
Perpendicular to accumulation of heat wall inner surface, round platform blind hole axial cross section is in the small trumpet type of outer imperial palace, in dry distiller circular cross-section top region
The fan-shaped uniform multiple short flamed burner 6-6 in domain, short flamed burner is connected to fuel gas pipe row 6-4 and oxygen hose row 6-
On 5, fuel gas pipe row 6-4 and oxygen hose row 6-5 is connected with the fuel gas pipe and oxygen hose that come from dry distiller outside, dry distiller 6
Charging aperture be connected with pre-distillation coal batcher 5, the gaseous phase outlet of dry distiller 6 is connected with inspissator 7, inspissator 7 and pre-distillation device 4
The entrance of gas passage 4-7 of air-flow bar shaped be connected, the inside of inspissator 7 sets multiple high-efficiency cyclone dust removers, dry distiller 6
Semicoke outlet is connected with semicoke cooling system.
Referring to Fig. 1 to Fig. 3, described raw material drying system includes feed coal surge bunker 1, feed coal batcher 2, drier
3 and dry gas deduster 11；The bottom discharge mouthful of feed coal surge bunker 1 is connected with the entrance of feed coal batcher 2, feed coal feed
The outlet of machine 2 is connected with drier 3；The dry feedstock import of described drier 3 with pre-distillation device 4 is connected, the one end of drier 3
Outlet is connected through drying gas deduster 11 with semicoke cooling system entrance, and the outlet of semicoke cooling system enters with the other end of drier 3
Mouth is connected.Wherein, described drier 3 be horizontal tilt place circular tube structure, drier 3 include outer cylinder body 3-1, around
Dynamic plate 3-2 and material-dropping hole 3-3；Outer cylinder body 3-1 is internally provided with the moving plate 3-2 of helical structure, and blanking is provided with moving plate 3-2
A diameter of 30~the 60mm of hole 3-3, material-dropping hole 3-3.
Referring to Fig. 1, Fig. 7, described semicoke cooling system includes that semicoke cooler 8, semicoke material discharging machine 9, hot blast pocket type are removed
Dirt device 10, circulating air blower fan 12 and recycle gas cooler 13；Described semicoke cooler 8 is connected with the semicoke outlet of dry distiller 6,
The bottom of semicoke cooler 8 is provided with semicoke material discharging machine 9, dries gas deduster 11 and is connected to the entrance of circulating air blower fan 12, circulating air
The outlet of blower fan 12 is connected with recycle gas cooler 13, and recycle gas cooler 13 is connected with semicoke cooler 8, and semicoke cooler 8 is passed through
Hot blast sack cleaner 10 is connected with drier 3.
Wherein, described semicoke cooler 8 is square-box-shaped structure, and top and bottom are square cone structure, semicoke cooler 8
Including upper end cover 8-1, square-box-shaped cylinder 8-2, bottom end cover 8-3, gas flow tube 8-4, shutter board 8-5 and collecting box 8-6；Square chest type tube
The upper end of body 8-2 is provided with upper end cover 8-1, and lower end is provided with bottom end cover 8-3, and horizontal direction is inserted with through square-box-shaped cylinder
Gas flow tube 8-4, gas flow tube radial level both sides are provided with gas outlet, and shutter board 8-5 is set at gas outlet, and shutter board 8-5 both sides set
It is equipped with collecting box 8-6.
Specifically, the present invention provide internal heat type roller accumulation of heat wall pulverized coal pyrolysis technique and device, by raw material drying system,
Pyrolysis system and semicoke cooling system are collectively constituted.Pyrolysis system includes pre-distillation system and distillation system；Both it was exactly that pyrolysis is anti-
Process is answered to be divided into two parts of pre-distillation and destructive distillation, two processes use different process and form；Retort process is used
Internal-combustion mode of heating, first combustion heating outer cylinder body accumulation of heat wall, secondly high-temperature heat accumulation wall radiation heat transfer pyrolysis, with heating
The characteristics of homogeneous product stabilization；Feed coal is dried and the cooling of hot semicoke is combined using gas complete alternation process, is realized
Waste Heat Reuse, reduces waste gas discharge.
Its process is：The feed coal of 0~20mm initially enters feed coal surge bunker, is fed through feed coal by bottom discharge mouthful
After machine regulation and control inlet amount, the one end via drier enters.Dryer configuration is：Circular tube structure is placed in horizontal tilt, interior
Portion is provided with the moving plate of helical structure, and material-dropping hole, a diameter of 30~60mm of material-dropping hole are provided with moving plate, and dryer cartridge is in
Rotate counterclockwise (the moisture-free coal port of export), is driven by motor or hydraulic mechanism, and mean speed is 10~15r/min.
Dryer cartridge bottom is deposited in into the feed coal in dryer cartridge, when drier rotates along tubular axis,
The moving plate being arranged on dryer cartridge inwall rotates with cylinder, and feed coal is lifted away from cylinder body bottom by moving plate, is lifted
Feed coal from cylinder body bottom falls first since the material-dropping hole of moving plate, and raw material coal particle forms waterfall shape in drier
Particle stream, after it is in 35~40 ° with horizontal sextant angle that feed coal is raised to cylinder section circle on moving plate, not under material-dropping hole
The particle for falling is left by moving plate, and in above process, raw material coal particle is fully dispersed in dryer cartridge, the specific surface of particle
Product increase considerably, with laterally across hot blast, one strand of little airflow is dispersed into the presence of moving plate material-dropping hole, it is scattered
Feed coal is fully contacted, realization exchanges heat, and takes away the steam of volatilization.The particle not being lifted away from by moving plate simultaneously is at drier bottom
Portion, because cylinder rotation makes its continuous rolling, due to the phase mutual friction of particle, shock causes to have inside raw material coal particle to be split
The particle of line is broken along cracks, or intensity coal particle not high is crushed in advance, prevents from bringing pyrolysis system into and causes dust accumulation.
Heat exchange is fully contacted with feed coal into the hot blast of drier by horizontal cross, feed coal is heated to 75~100 DEG C, while
The air velocity entered inside drier by optimal control in 10~15m/s, in can making feed coal≤the intrinsic coal dusts of 0.2mm and
The abrasion that drying process is produced newly produces coal dust to take away drier by dry-heat air, and the dusty gas for taking away drier is removed through pocket type
Dirt device removes coal dust Posterior circle to semicoke cooling system and is cooled down for semicoke.It should be noted that sack cleaner herein is
Dry gas deduster.
75~100 DEG C of moisture-free coal is entered by pre-distillation device top.The structure of pre-distillation device is：Square-box-shaped structure, top
With the bottom side of being all cone structure, the passage passed through for parallel current is internally provided with, inner passage is by multiple J-type metal structures
Part is formed, the arrangement of J-type hardware parallel misalignment, air-flow gateway is formd in the horizontal plane, on the vertical plane by pre-distillation
Device inside square-box-shaped cavity, is separated into the gas passage of reciprocal alternate air-flow bar shaped and the solid tunnel of moisture-free coal bar shaped.Enter
Enter air-flow in solid tunnel can transverse crossing moisture-free coal particulate interspaces, so as to realize mass transfer, heat transfer and react, while in air-flow
The gateway vertical direction of the gas passage of bar shaped sets collecting box and dispersion case, for passing in and out the distribution of air-flow and converging.
500~650 DEG C of pyrolysis oil gas initially enters the dispersion case of pre-distillation device, is dispersed into air-flow in dispersion case many
The vertical bar shaped air-flow band of stock, enters in the interior structure passage of horizontal parallel through each air inlet, and the air-flow into passage changes stream
To the moisture-free coal particle layers through horizontal direction enter, through moisture-free coal particulate interspaces, 500~650 DEG C of pyrolysis oil gas and dryings
Coal directly contact, moisture-free coal constant temperature is raised, volatile matter and water release in coal, and the pyrolysis oil gas come with dry distiller is mixed
Close, moisture-free coal particle layers outlet outflow from horizontal direction, and converge in interior structure passage.At the same time in pyrolysis oil gas
Heavy component oil condenses into the oil droplet absorption of liquid phase when being come in contact with moisture-free coal in the outer surface of moisture-free coal, when being heated again
The reaction of Shi Fasheng second pyrolysises produces light component oil gas.Converge in the gas flow collecting box in each passage, pyrolysis oil temperature
It is 180~250 DEG C to spend, and is finally delivered to outside device through pipeline, and follow-up purified treatment is carried out with well known tar recovery method.
Because moisture-free coal passes through pre-distillation device, through the tripper that top is set, moisture-free coal is dispersed in J-type gold
In the bar shaped solid tunnel that metal elements are formed, slowly moved down by deadweight.500~650 DEG C of pyrolysis oil gas are dispersed through case, horizontal
To moisture-free coal granular bed lamellar spacing is passed through, the bar shaped formed in J-type hardware is fully directly contacted with moisture-free coal and is consolidated
The temperature of destructive distillation coal gradually rises to 300~420 DEG C from top to bottom in body passage.It is vertical slow to moving down due to drying coal particle
It is dynamic, dry coal particle and moving and dust raising phenomenon do not occur, and due to the passage of alternating parallel structure, form surface higher
Product, and then speed when reducing air-flow by unit area, air-flow fail entrained particles dust when flowing out.Meanwhile, dry distiller
The pyrolysis oil gas for coming is entrained with dust when by moisture-free coal solid particle bed due to inertial collision, retention and diffusion etc.
Effect, makes dust be attached to moisture-free coal solid particles surface, that is, complete the heat transfer pre-distillation process of moisture-free coal and pyrolysis oil gas,
Effective filtering and removing has been carried out to the dust produced in retort process simultaneously.The distance between solid tunnel is converted simultaneously, so that
Change thickness, the pyrolysis penetrating resistance of oil gas of moisture-free coal solid particle layer, adjust pre-distillation heat-transfer effect, and then realize vertical
The pre-distillation technical process that side goes out is entered on girdle passage, hot carrier gas side.
The pre-distillation coal for completing pre-distillation process has only reached 300~420 DEG C due to temperature, could not destructive distillation completely, through pre-
After the predrying coal batcher regulation and control inlet amount of dry distiller bottom, enter via dry distiller one end.
Dry distiller structure is：The roller frame that horizontal tilt is placed, the roller has onion model structure, by metal outer cylinder
Body, inside holding thermal insulation layer, high-temperature heat accumulation wall is constituted successively, inside holding thermal insulation layer.Outer cylinder body is metallic material product, is whole dry
Evaporate the brace foundation of device；Thermal insulation layer is closely attached to outer cylinder body inner surface, and heat is scattered and disappeared in preventing retort process, and heat is reduced to the greatest extent
Loss improves the thermal efficiency, advantageously reduces the strength grade of outer cylinder body metal material；Accumulation of heat wall is high-purity silicon dioxide product, tool
There is wear-resistant, erosion-resisting characteristics, be the bridge of heat transfer in retort process.Preferred indent knot is set on accumulation of heat wall inner surface
The round platform blind hole of structure, round platform blind hole is in equilateral triangle arrangement, and the axis of round platform blind hole is perpendicular to accumulation of heat wall inner surface, and round platform is blind
Hole axial cross section is small in outer imperial palace, and round platform blind hole not only increases accumulation of heat wall external surface area, while reducing, to be trapped in round platform blind
The angle of repose during landing of the solid particle in hole, when dry distiller rotates, be trapped in solid particle in round platform blind hole by by
Gradually lift, the small trumpet type of outer imperial palace is very beneficial to solid particle and slides out in round platform blind hole pit-hole, prevents solid particle from shedding
Cause moving and airborne dust.In the fan-shaped uniform multiple short flame burners of dry distiller circular cross-section top area, burner is connected to
Fuel gas pipe is arranged with oxygen hose row, and fuel gas pipe row and oxygen hose are arranged and the fuel gas pipe and oxygen hose come from outside dry distiller
It is connected.When dry distiller roller is rotated, the burner transfixion of sector distribution, the flame of burner directly heat by accumulation of heat
Wall, forms high-temperature thermal storage body, and high-temperature thermal storage body rotates to during bottom and directly touched with pre-distillation coal, carries out heat radiation transmission, in advance
There is pyrolytic reaction after being heated in destructive distillation coal.Dry distiller cylinder is in rotate counterclockwise (the hot semicoke port of export), by motor or hydraulic pressure
Mechanism driving, mean speed is 5~10r/min.
Evenly laid out in dry distiller cylinder body bottom into the feed coal in dry distiller cylinder, dry distiller rotates along tubular axis
When, and radially constantly turned back along cylinder when being rotated with dry distiller cylinder.From fuel gas and oxygen that dry distiller outside enters, fuel
Gas is the coal gas reuse after self-produced purification, and oxygen then comes from oxygenerator, its purity 35%~99.9% (volume), in dry distiller
Circular cross-section top sector is distributed multiple short flame burners, on burner connection fuel gas pipe row and oxygen hose row, dry distiller
When roller is rotated, the burner of sector distribution is motionless, the accumulation of heat wall inner surface of the flame vertical heating process of burner, makes its temperature
Degree reaches 950~1350 DEG C, when high-temperature heat accumulation wall rotates bottom processed, heat exchange occurs with pre-distillation coal directly contact, in advance
Destructive distillation coal is gradually heated by the sonochemical activity to 480~630 DEG C, and organic matter is heated volatilization in pre-distillation coal, semicoke is ultimately generated, by dry distiller
One end outlet at bottom discharge.The accumulation of heat wall for completing radiant heat transfer is rotated during to top, is continued burned device and is heated again, so past
Multiple circulating-heating and heat transfer.The pyrolysis air-fuel mixture that the flue gas that burner is produced is escaped with pyrolysis, through dry distiller gaseous phase outlet
Into inspissator, the multiple preferred high-efficiency cyclone dust removers of inspissator inside setting, 5 μm~250 μm of dedusting particle size range,
The fuel gas and dust that dry distiller is produced only carries out partial removal in inspissator, and efficiency of dust collection is 95%~98% (quality), not by
The dust of removing enters in pre-distillation device, by pre-distillation device solid particle entrapment, dry distiller has been taken back again, takes back dry distiller
Dust granules are pyrolyzed oil gas and bring inspissator into again, and so on circulate, and dust granules have reached concentration, and the concentration of concentration reaches
The critical point of the cyclone dust set in inspissator, hereafter dust concentration be no longer raised and lowered, when dust content increases,
Cyclone dust removal efficiency increases, and when Dust Capacity is reduced, the efficiency of dust collection reduction of cyclone, dust granules further concentrate increasing
Plus.Inspissator makes the new dust discharger for producing in pre-distillation and retort process, and reaches the purpose for not being enriched with, not being detained.
550~650 DEG C of hot semicoke enters semicoke cooler by its top feed mouthful.Semicoke cooler is square-box-shaped structure,
Top and bottom are square cone structure, and bottom is provided with semicoke material discharging machine control coke discharge amount, in the horizontal direction of square-box-shaped cylinder
The gas flow tube of square-box-shaped cylinder is inserted through, gas flow tube radial level both sides are provided with gas outlet, into the cold wind inside gas flow tube,
The hot semicoke bed gap moved from top to bottom is passed through through gas flow tube gas outlet, heat transfer occurs with hot semicoke directly contact.Go out
Shutter board is set at gas port, and air-flow converges to the collecting box of semicoke cooler both sides through shutter board, is discharged by pipeline.
550~650 DEG C of hot semicoke is finally cooled to≤100 DEG C after semicoke cooler, for the cold of semicoke cooling
Wind is heated to 200 DEG C~250 DEG C, and hot blast delivers to the semicoke dust that sack cleaner removing gas is carried through pipeline, after dedusting
Hot blast enter drier as drying source, about 120 DEG C of dried gas, moisture be 8%~19% (volume), warp
After sack cleaner removing coal dust, >=6KPa is pressurized to by circulating fan, nitrogen is supplemented from outside device when tolerance is not enough, be pressurized
Gas afterwards is cooled to 32 DEG C~45 DEG C through water recirculator, is again introduced into semicoke cooler, and the cyclic process need not disappear
Substantial amounts of nitrogen is consumed, will be dried by carrier gas together with being closely connected with destructive distillation, while the moisture removed in drying process,
Adsorbed by semicoke during semicoke is cooled down, not only realize the recycling of waste vapour, and absorption of the semicoke to moisture,
The water vapor partial pressure of gas and hot air is reduced, hot blast is improve as the efficiency of drying source and the storage security of semicoke.
The present invention is described in further details with reference to specific embodiment, table 1 is to use in specific embodiment
Pyrolyzing coal property.
The pyrolysis feed coal analysis of table 1 and particle diameter table
Embodiment 1
0~20mm feed coals a that Shenmu County Yao Qu is produced is adjusted into raw material through feed coal surge bunker 1 and feed coal batcher 2
After coal inlet amount, entered by one end of drier 3, the cylinder of drier 3 rotates under electric driving mechanism, and mean speed is
8r/min.Drive the moving plate 3-2 in being arranged on to rotate together when dryer cartridge rotates, make feed coal a in the drier 3 around
It is dynamic.Along dryer cartridge axially into the feed coal a of hot blast i and moving realize contact heat-exchanging, and take away the steam of volatilization, it is former
Material coal a is heated to 85 DEG C by normal temperature turns into moisture-free coal b, and pre-distillation device 4 is entered by the other end of drier 3.
Moisture-free coal b enters pre-distillation device 4 by top entry, into the moisture-free coal b inside pre-distillation device 4 through tripper 4-4
It is dispersed in each solid tunnel 4-6, is slowly moved down along passage into the moisture-free coal b in solid tunnel 4-6.To moving down
In dynamic process, 580 DEG C of pyrolysis oil gas g sequentially pass through dispersion case, gas passage 4-7, the bed solid of transverse crossing moisture-free coal b
Particulate interspaces, with moisture-free coal b direct contact heat transfers, temperature is stepped up to 350 DEG C of concurrent first portion heat moisture-free coal b from top to bottom
Solution reaction, volatilization gas and pyrolysis air-fuel mixture, leave pre-distillation device 4, its pyrolysis through gas passage 4-7 after collecting box convergence
The temperature of oil gas h is 240 DEG C.At the same time the dust of pyrolysis oil gas g entrainments is trapped within bed particulate interspaces.350 DEG C pre-
Discharged by discharging opening after the final collections through bottom end cover 4-3 of destructive distillation coal c.
After the pre-distillation coal c of the discharge of pre-distillation device 4 is through the regulation flow of pre-distillation batcher 5, entered by the one end of dry distiller 6,
The cylinder of dry distiller 6 rotates under electric driving mechanism, and mean speed is 6r/min.It is located in cylinder when dry distiller cylinder rotates
The burner 6-6 of the fan-shaped arrangement on top is with respect to cylinder transfixion.Burner 6-6 uses the fuel gas f and pure after purification
The oxygen e spent for 85% is burnt, and burning produces flame to directly heat the region covered by the accumulation of heat wall 6-3 of burner,
The temperature of accumulation of heat wall 6-3 is 1250 DEG C, and the high-temperature area of accumulation of heat wall 6-3 is by the pre-distillation coal after rotation with dry distiller cylinder bottom
Directly contact, pre-distillation coal c be subject to accumulation of heat wall 6-3 radiant heat transfer, gradually high to 520 DEG C of temperature, pre-distillation coal c is pyrolyzed
Reaction volatilizes oil gas, and the flue gas produced with burner combustion mixes, and carries poor dust granules discharge dry distiller 6 secretly.Discharge is dry
The pyrolysis oil gas g for evaporating device 6 enters inspissator 7, by after the cyclone removing part dust in inspissator 7, pyrolysis oil gas g enters
As the hot carrier gas of pre-distillation process in pre-distillation device 4.Rotated again to burner 6- by the accumulation of heat wall 6-3 after radiant heat transfer
6 overlay areas are heated, and are pyrolyzed the 600 DEG C of semicokes for producing and are exported discharge through cylinder body bottom.
The hot semicoke of 520 DEG C of discharge enters semicoke cooler 8 by top entry, and hot semicoke d is slow downward from top to bottom
It is mobile.Carry out circulating air k into the gas flow tube being horizontally inserted from semicoke cooler 8, gas flow tube radial level both sides are provided with venthole,
Circulating air k passes through the bed for moving from top to bottom by venthole, and heat exchange occurs with hot semicoke d directly contacts.Gas after heat exchange
Flow and discharged after converging, discharge hot blast i temperature is 250 DEG C, drying is entered after removing semicoke dust by hot blast sack cleaner 10
Used as Drying Source, the dry wind j entrance for having dried dries gas deduster 11 to device 3, after removing coal dust, through recycle gas cooler
12 supercharging Posterior circles are used, and after the circulating air k after supercharging is cooled to 35 DEG C with the nitrogen of new supplement through recycle gas cooler, are entered
Semicoke cooler 8 is used as cooling medium.And it is cooled to the semicoke discharge after 80 DEG C of semicoke d are collected through bottom end cover 8-3 by discharging opening
Discharged after the regulation flow of machine 9.
The pyrolysis oil gas h that pyrolysis installation is produced cold bulging tar recovery method treatment, the coal gas one after treatment known to
Partly as the fuel gas of dry distiller 6.
Embodiment 2
0~20mm feed coals a of Shenmu County's cold water well production is adjusted into original through feed coal surge bunker 1 and feed coal batcher 2
After material coal inlet amount, entered by one end of drier 3, the cylinder of drier 3 rotates under electric driving mechanism, and mean speed is
10r/min.Drive the moving plate 3-2 in being arranged on to rotate together when dryer cartridge rotates, make feed coal a in drier 3
Moving.Along dryer cartridge axially into the feed coal a of hot blast i and moving realize contact heat-exchanging, and take away the steam of volatilization,
Feed coal a is heated to 92 DEG C by normal temperature turns into moisture-free coal b, and pre-distillation device 4 is entered by the other end of drier 3.
Moisture-free coal b enters pre-distillation device 4 by top entry, into the moisture-free coal b inside pre-distillation device 4 through tripper 4-4
It is dispersed in each solid tunnel 4-6, is slowly moved down along passage into the moisture-free coal b in solid tunnel 4-6.To moving down
In dynamic process, 610 DEG C of pyrolysis oil gas g sequentially pass through dispersion case, gas passage 4-7, the bed solid of transverse crossing moisture-free coal b
Particulate interspaces, with moisture-free coal b direct contact heat transfers, temperature is stepped up to 375 DEG C of concurrent first portion heat moisture-free coal b from top to bottom
Solution reaction, volatilization gas and pyrolysis air-fuel mixture, leave pre-distillation device 4, its pyrolysis through gas passage 4-7 after collecting box convergence
The temperature of oil gas h is 200 DEG C.At the same time the dust of pyrolysis oil gas g entrainments is trapped within bed particulate interspaces.375 DEG C pre-
Discharged by discharging opening after the final collections through bottom end cover 4-3 of destructive distillation coal c.
After the pre-distillation coal c of the discharge of pre-distillation device 4 is through the regulation flow of pre-distillation batcher 5, entered by the one end of dry distiller 6,
The cylinder of dry distiller 6 rotates under electric driving mechanism, and mean speed is 8r/min.It is located in cylinder when dry distiller cylinder rotates
The burner 6-6 of the fan-shaped arrangement on top is with respect to cylinder transfixion.Burner 6-6 uses the fuel gas f and pure after purification
The oxygen e spent for 90% is burnt, and burning produces flame to directly heat the region covered by the accumulation of heat wall 6-3 of burner,
The temperature of accumulation of heat wall 6-3 is 1100 DEG C, and the high-temperature area of accumulation of heat wall 6-3 is by the pre-distillation coal after rotation with dry distiller cylinder bottom
Directly contact, pre-distillation coal c be subject to accumulation of heat wall 6-3 radiant heat transfer, gradually high to 550 DEG C of temperature, pre-distillation coal c is pyrolyzed
Reaction volatilizes oil gas, and the flue gas produced with burner combustion mixes, and carries poor dust granules discharge dry distiller 6 secretly.Discharge is dry
The pyrolysis oil gas g for evaporating device 6 enters inspissator 7, by after the cyclone removing part dust in inspissator 7, pyrolysis oil gas g enters
As the hot carrier gas of pre-distillation process in pre-distillation device 4.Rotated again to burner 6- by the accumulation of heat wall 6-3 after radiant heat transfer
6 overlay areas are heated, and are pyrolyzed the 550 DEG C of semicokes for producing and are exported discharge through cylinder body bottom.
The hot semicoke of 550 DEG C of discharge enters semicoke cooler 8 by top entry, and hot semicoke d is slow downward from top to bottom
It is mobile.Carry out circulating air k into the gas flow tube being horizontally inserted from semicoke cooler 8, gas flow tube radial level both sides are provided with venthole,
Circulating air k passes through the bed for moving from top to bottom by venthole, and heat exchange occurs with hot semicoke d directly contacts.Gas after heat exchange
Flow and discharged after converging, discharge hot blast i temperature is 230 DEG C, drying is entered after removing semicoke dust by hot blast sack cleaner 10
Used as Drying Source, the dry wind j entrance for having dried dries gas deduster 11 to device 3, after removing coal dust, through recycle gas cooler
12 supercharging Posterior circles are used, and after the circulating air k after supercharging is cooled to 35 DEG C with the nitrogen of new supplement through recycle gas cooler, are entered
Semicoke cooler 8 is used as cooling medium.And it is cooled to the semicoke discharge after 90 DEG C of semicoke d are collected through bottom end cover 8-3 by discharging opening
Discharged after the regulation flow of machine 9.
The pyrolysis oil gas h that pyrolysis installation is produced cold bulging tar recovery method treatment, the coal gas one after treatment known to
Partly as the fuel gas of dry distiller 6.
Embodiment 3
0~20mm feed coals a that Shenmu County river bend produces is adjusted into raw material through feed coal surge bunker 1 and feed coal batcher 2
After coal inlet amount, entered by one end of drier 3, the cylinder of drier 3 rotates under electric driving mechanism, and mean speed is
13r/min.Drive the moving plate 3-2 in being arranged on to rotate together when dryer cartridge rotates, make feed coal a in drier 3
Moving.Along dryer cartridge axially into the feed coal a of hot blast i and moving realize contact heat-exchanging, and take away the steam of volatilization,
Feed coal a is heated to 95 DEG C by normal temperature turns into moisture-free coal b, and pre-distillation device 4 is entered by the other end of drier 3.
Moisture-free coal b enters pre-distillation device 4 by top entry, into the moisture-free coal b inside pre-distillation device 4 through tripper 4-4
It is dispersed in each solid tunnel 4-6, is slowly moved down along passage into the moisture-free coal b in solid tunnel 4-6.To moving down
In dynamic process, 640 DEG C of pyrolysis oil gas g sequentially pass through dispersion case, gas passage 4-7, the bed solid of transverse crossing moisture-free coal b
Particulate interspaces, with moisture-free coal b direct contact heat transfers, temperature is stepped up to 400 DEG C of concurrent first portion heat moisture-free coal b from top to bottom
Solution reaction, volatilization gas and pyrolysis air-fuel mixture, leave pre-distillation device 4, its pyrolysis through gas passage 4-7 after collecting box convergence
The temperature of oil gas h is 210 DEG C.At the same time the dust of pyrolysis oil gas g entrainments is trapped within bed particulate interspaces.400 DEG C pre-
Discharged by discharging opening after the final collections through bottom end cover 4-3 of destructive distillation coal c.
After the pre-distillation coal c of the discharge of pre-distillation device 4 is through the regulation flow of pre-distillation batcher 5, entered by the one end of dry distiller 6,
The cylinder of dry distiller 6 rotates under electric driving mechanism, and mean speed is 9r/min.It is located in cylinder when dry distiller cylinder rotates
The burner 6-6 of the fan-shaped arrangement on top is with respect to cylinder transfixion.Burner 6-6 uses the fuel gas f and pure after purification
The oxygen e spent for 88% is burnt, and burning produces flame to directly heat the region covered by the accumulation of heat wall 6-3 of burner,
The temperature of accumulation of heat wall 6-3 is 1150 DEG C, and the high-temperature area of accumulation of heat wall 6-3 is by the pre-distillation coal after rotation with dry distiller cylinder bottom
Directly contact, pre-distillation coal c be subject to accumulation of heat wall 6-3 radiant heat transfer, gradually high to 570 DEG C of temperature, pre-distillation coal c is pyrolyzed
Reaction volatilizes oil gas, and the flue gas produced with burner combustion mixes, and carries poor dust granules discharge dry distiller 6 secretly.Discharge is dry
The pyrolysis oil gas g for evaporating device 6 enters inspissator 7, by after the cyclone removing part dust in inspissator 7, pyrolysis oil gas g enters
As the hot carrier gas of pre-distillation process in pre-distillation device 4.Rotated again to burner 6- by the accumulation of heat wall 6-3 after radiant heat transfer
6 overlay areas are heated, and are pyrolyzed the 570 DEG C of semicokes for producing and are exported discharge through cylinder body bottom.
The hot semicoke of 570 DEG C of discharge enters semicoke cooler 8 by top entry, and hot semicoke d is slow downward from top to bottom
It is mobile.Carry out circulating air k into the gas flow tube being horizontally inserted from semicoke cooler 8, gas flow tube radial level both sides are provided with venthole,
Circulating air k passes through the bed for moving from top to bottom by venthole, and heat exchange occurs with hot semicoke d directly contacts.Gas after heat exchange
Flow and discharged after converging, discharge hot blast i temperature is 245 DEG C, drying is entered after removing semicoke dust by hot blast sack cleaner 10
Used as Drying Source, the dry wind j entrance for having dried dries gas deduster 11 to device 3, after removing coal dust, through recycle gas cooler
12 supercharging Posterior circles are used, and after the circulating air k after supercharging is cooled to 35 DEG C with the nitrogen of new supplement through recycle gas cooler, are entered
Semicoke cooler 8 is used as cooling medium.And it is cooled to the semicoke discharge after 86 DEG C of semicoke d are collected through bottom end cover 8-3 by discharging opening
Discharged after the regulation flow of machine 9.
The pyrolysis oil gas h that pyrolysis installation is produced cold bulging tar recovery method treatment, the coal gas one after treatment known to
Partly as the fuel gas of dry distiller 6.
Embodiment 4
0~20mm feed coals a of Zhao family of Shenmu County beam production is adjusted into original through feed coal surge bunker 1 and feed coal batcher 2
After material coal inlet amount, entered by one end of drier 3, the cylinder of drier 3 rotates under electric driving mechanism, and mean speed is
15r/min.Drive the moving plate 3-2 in being arranged on to rotate together when dryer cartridge rotates, make feed coal a in drier 3
Moving.Along dryer cartridge axially into the feed coal a of hot blast i and moving realize contact heat-exchanging, and take away the steam of volatilization,
Feed coal a is heated to 100 DEG C by normal temperature turns into moisture-free coal b, and pre-distillation device 4 is entered by the other end of drier 3.
Moisture-free coal b enters pre-distillation device 4 by top entry, into the moisture-free coal b inside pre-distillation device 4 through tripper 4-4
It is dispersed in each solid tunnel 4-6, is slowly moved down along passage into the moisture-free coal b in solid tunnel 4-6.To moving down
In dynamic process, 650 DEG C of pyrolysis oil gas g sequentially pass through dispersion case, gas passage 4-7, the bed solid of transverse crossing moisture-free coal b
Particulate interspaces, with moisture-free coal b direct contact heat transfers, temperature is stepped up to 410 DEG C of concurrent first portion heat moisture-free coal b from top to bottom
Solution reaction, volatilization gas and pyrolysis air-fuel mixture, leave pre-distillation device 4, its pyrolysis through gas passage 4-7 after collecting box convergence
The temperature of oil gas h is 230 DEG C.At the same time the dust of pyrolysis oil gas g entrainments is trapped within bed particulate interspaces.410 DEG C pre-
Discharged by discharging opening after the final collections through bottom end cover 4-3 of destructive distillation coal c.
After the pre-distillation coal c of the discharge of pre-distillation device 4 is through the regulation flow of pre-distillation batcher 5, entered by the one end of dry distiller 6,
The cylinder of dry distiller 6 rotates under electric driving mechanism, and mean speed is 10r/min.Cylinder is located at when dry distiller cylinder rotates
The burner 6-6 of the fan-shaped arrangement of internal upper part is with respect to cylinder transfixion.Burner 6-6 using purification after fuel gas f and
Purity is that 98% oxygen e is burnt, and burning produces flame to directly heat the area covered by the accumulation of heat wall 6-3 of burner
Domain, the temperature of accumulation of heat wall 6-3 is 1280 DEG C, and the high-temperature area of accumulation of heat wall 6-3 is by the predry after rotation with dry distiller cylinder bottom
Coal directly contact is evaporated, pre-distillation coal c is subject to the radiant heat transfer of accumulation of heat wall 6-3, gradually high to 600 DEG C of temperature, pre-distillation coal c to occur
Pyrolytic reaction volatilizes oil gas, and the flue gas produced with burner combustion mixes, and carries poor dust granules discharge dry distiller 6 secretly.Row
The pyrolysis oil gas g for going out dry distiller 6 enters inspissator 7, by after the cyclone removing part dust in inspissator 7, being pyrolyzed oil gas g
As the hot carrier gas of pre-distillation process in into pre-distillation device 4.Rotated again to burning by the accumulation of heat wall 6-3 after radiant heat transfer
Device 6-6 is heated overlay area, and is pyrolyzed the 600 DEG C of semicokes for producing and is exported discharge through cylinder body bottom.
The hot semicoke of 600 DEG C of discharge enters semicoke cooler 8 by top entry, and hot semicoke d is slow downward from top to bottom
It is mobile.Carry out circulating air k into the gas flow tube being horizontally inserted from semicoke cooler 8, gas flow tube radial level both sides are provided with venthole,
Circulating air k passes through the bed for moving from top to bottom by venthole, and heat exchange occurs with hot semicoke d directly contacts.Gas after heat exchange
Flow and discharged after converging, discharge hot blast i temperature is 250 DEG C, drying is entered after removing semicoke dust by hot blast sack cleaner 10
Used as Drying Source, the dry wind j entrance for having dried dries gas deduster 11 to device 3, after removing coal dust, through recycle gas cooler
12 supercharging Posterior circles are used, and after the circulating air k after supercharging is cooled to 35 DEG C with the nitrogen of new supplement through recycle gas cooler, are entered
Semicoke cooler 8 is used as cooling medium.And it is cooled to the semicoke discharge after 95 DEG C of semicoke d are collected through bottom end cover 8-3 by discharging opening
Discharged after the regulation flow of machine 9.
The pyrolysis oil gas h that pyrolysis installation is produced cold bulging tar recovery method treatment, the coal gas one after treatment known to
Partly as the fuel gas of dry distiller 6.
The coal tar of table 2, semicoke and gas characteristic
Thermal decomposition product (coal tar, semicoke and coal gas) property of the invention is shown in Table 2.
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (10)
1. a kind of internal heat type roller accumulation of heat wall pulverized coal pyrolysis device, it is characterised in that including raw material drying system, pyrolysis system and
Semicoke cooling system；The raw material drying outlet of described raw material drying system is connected with the import of pyrolysis system, pyrolysis system
Outlet is connected with semicoke cooling system, and semicoke cooling system is connected with raw material drying system, and described pyrolysis system includes predry
System and distillation system are evaporated, described pre-distillation system is connected with distillation system circulation.
2. internal heat type roller accumulation of heat wall pulverized coal pyrolysis device according to claim 1, it is characterised in that described pre-distillation
System includes pre-distillation device (4) and pre-distillation coal batcher (5)；Described pre-distillation device (4) includes square-box-shaped cylinder (4-2)；
Square-box-shaped cylinder (4-2) upper end is upper end cover (4-1), and lower end is bottom end cover (4-3), and square-box-shaped cylinder (4-2) is internally provided with
Multiple J-type hardwares (4-5), J-type hardware parallel misalignment arrangement, form air-flow gateway in the horizontal plane, are hanging down
Face directly the internal square-box-shaped cavity of pre-distillation device (4), be separated into the gas passage (4-7) of reciprocal alternate air-flow bar shaped and do
The solid tunnel (4-6) of dry coal bar shaped, pre-distillation device (4) inner tip is additionally provided with tripper (4-4), described raw material drying
System raw material drying outlet with pre-distillation device top dry feedstock import be connected, the pre-distillation coal export of pre-distillation device (4) and
Pre-distillation coal batcher (5) is connected, and pre-distillation coal batcher (5) is connected with distillation system entrance.
3. internal heat type roller accumulation of heat wall pulverized coal pyrolysis device according to claim 2, it is characterised in that described square-box-shaped
The side's of being all cone structure at the top and bottom of cylinder (4-2), the porch vertical direction of air-flow bar shaped gas passage (4-7) is set
There is dispersion case, exit vertical direction is provided with collecting box.
4. the internal heat type roller accumulation of heat wall pulverized coal pyrolysis device according to Claims 2 or 3, it is characterised in that described is dry
Evaporating system includes dry distiller (6) and inspissator (7)；The roller frame that dry distiller (6) is placed for horizontal tilt, the roller has green onion
Head model structure, the outer cylinder body (6-1) that dry distiller (6) is placed including horizontal tilt, outer cylinder body (6-1) inner surface is closely pasted successively
The thermal insulation layer (6-2) for being incubated and the accumulation of heat wall (6-3) for high-temperature heat accumulation are attached to, set interior on accumulation of heat wall inner surface
The round platform blind hole (6-7) of recessed structure, round platform blind hole is in equilateral triangle arrangement, the axis of the round platform blind hole table in accumulation of heat wall
Face, round platform blind hole axial cross section is fan-shaped uniform multiple short in dry distiller circular cross-section top area in the small trumpet type of outer imperial palace
The burner (6-6) of flame, short flamed burner is connected on fuel gas pipe row (6-4) and oxygen hose row (6-5), fuel gas
Pipe arranges (6-4) and oxygen hose row (6-5) and is connected with fuel gas pipe and oxygen hose outside the dry distiller, and dry distiller (6) are entered
Material mouth is connected with pre-distillation coal batcher (5), and dry distiller (6) gaseous phase outlet is connected with inspissator (7), inspissator (7) and predry
The entrance for evaporating the gas passage (4-7) of the air-flow bar shaped of device (4) is connected, and multiple high-efficiency cyclone dedustings are set inside inspissator (7)
Device, the semicoke outlet of dry distiller (6) is connected with semicoke cooling system.
5. internal heat type roller accumulation of heat wall pulverized coal pyrolysis device according to claim 4, it is characterised in that described raw material is done
Drying system includes feed coal surge bunker (1), feed coal batcher (2), drier (3) and dries gas deduster (11)；Feed coal
The bottom discharge mouthful of surge bunker (1) is connected with feed coal batcher (2) entrance, and feed coal batcher (2) is exported and drier (3)
It is connected；Described drier (3) is connected with the dry feedstock import of pre-distillation device (4), and the outlet of drier (3) one end is through drying
Gas deduster (11) is connected with semicoke cooling system entrance, and the outlet of semicoke cooling system is connected with drier (3) another end entrance.
6. internal heat type roller accumulation of heat wall pulverized coal pyrolysis device according to claim 5, it is characterised in that described drier
(3) it is circular tube structure that horizontal tilt is placed, drier (3) includes outer cylinder body (3-1), moving plate (3-2) and material-dropping hole
(3-3)；Outer cylinder body (3-1) is internally provided with the moving plate (3-2) of helical structure, and material-dropping hole (3- is provided with moving plate (3-2)
3), material-dropping hole (3-3) a diameter of 30~60mm.
7. the internal heat type roller accumulation of heat wall pulverized coal pyrolysis device according to claim 5 or 6, it is characterised in that described half
Burnt cooling system include semicoke cooler (8), semicoke material discharging machine (9), hot blast sack cleaner (10), circulating air blower fan (12) and
Recycle gas cooler (13)；Described semicoke cooler (8) is connected with the semicoke outlet of dry distiller (6), semicoke cooler (8) bottom
Portion is provided with semicoke material discharging machine (9), dries gas deduster (11) and is connected to circulating air blower fan (12) entrance, circulating air blower fan (12)
Outlet is connected with recycle gas cooler (13), and recycle gas cooler (13) is connected with semicoke cooler (8), semicoke cooler (8)
It is connected with drier (3) through hot blast sack cleaner (10).
8. internal heat type roller accumulation of heat wall pulverized coal pyrolysis device according to claim 7, it is characterised in that described semicoke is cold
But device (8) is square-box-shaped structure, and top and bottom are square cone structure, and semicoke cooler (8) includes upper end cover (8-1), square chest
Type tube body (8-2), bottom end cover (8-3), gas flow tube (8-4), shutter board (8-5) and collecting box (8-6)；Square-box-shaped cylinder (8-2)
Upper end be provided with upper end cover (8-1), lower end is provided with bottom end cover (8-3), and horizontal direction is inserted with through square-box-shaped cylinder
Gas flow tube (8-4), gas flow tube radial level both sides are provided with gas outlet, and shutter board (8-5), shutter board (8-5) are set at gas outlet
Both sides are provided with collecting box (8-6).
9. a kind of internal heat type roller accumulation of heat wall pulverized coal pyrolysis technique based on claim 1-8 any one described devices, it is special
Levy and be, comprise the following steps：
1) pre-distillation device (4) is entered by top entry through the moisture-free coal (b) of dried 75~100 DEG C of raw material drying system, is entered
Enter the internal moisture-free coal (b) of pre-distillation device (4) to be dispersed in each solid tunnel (4-6) through tripper (4-4), it is logical into solid
Moisture-free coal (b) in road (4-6) is slowly moved down along passage, during moving down, 500~650 DEG C of pyrolysis oil gas
G () sequentially passes through dispersion case, gas passage (4-7), the bed solid particle gap of transverse crossing moisture-free coal (b), with moisture-free coal
(b) direct contact heat transfer, temperature is stepped up to 300~420 DEG C of concurrent first portion pyrolytic reactions moisture-free coal (b) from top to bottom,
Volatilization gas and pyrolysis air-fuel mixture, leave pre-distillation device (4), after its purification through gas passage (4-7) after collecting box convergence
Pyrolysis oil gas (h) temperature be 180~250 DEG C；The dust of at the same time pyrolysis oil gas (g) entrainment is trapped within bed particle
In gap；Discharged by discharging opening after 300~420 DEG C of final collections through bottom end cover (4-3) of pre-distillation coal (c)；
2) after pre-distillation coal (c) of pre-distillation device (4) discharge is through pre-distillation batcher (5) regulation flow, by dry distiller (6) one end
Into the cylinder of dry distiller (6) rotates under electric driving mechanism, and mean speed is 5~10r/min；Dry distiller cylinder rotates
When positioned at cylinder internal upper part fan-shaped arrangement burner (6-6) with respect to cylinder transfixion, burner (6-6) uses purification
Rear fuel gas (f) and purity are that 35~99.9% oxygen (e) is burnt, and burning produces flame to directly heat by burning
The region of accumulation of heat wall (6-3) covering of device, the temperature of accumulation of heat wall (6-3) is 950~1350 DEG C, the high-temperature region of accumulation of heat wall (6-3)
Domain is subject to the radiation of accumulation of heat wall (6-3) by the pre-distillation coal directly contact after rotation with dry distiller cylinder bottom, pre-distillation coal (c)
There is pyrolytic reaction and volatilize oil gas in heat transfer, gradually high to 480~630 DEG C of temperature, pre-distillation coal (c), produced with burner combustion
Raw flue gas mixing, and carry poor dust granules discharge dry distiller (6) secretly；Pyrolysis oil gas (g) of discharge dry distiller (6) enters concentration
Device (7), by after the cyclone removing part dust in inspissator (7), pyrolysis oil gas (g) enters pre-distillation device (4) interior conduct
The hot carrier gas of pre-distillation process, rotates to burner (6-6) overlay area again by the accumulation of heat wall (6-3) after radiant heat transfer
Row heating, and be pyrolyzed 550~650 DEG C of semicokes for producing and discharged through cylinder body bottom outlet；
3) the hot semicoke of 550~650 DEG C of discharge enters semicoke cooler (8) by top entry, and hot semicoke (d) is delayed from top to bottom
Slowly move down, circulating air (k) into the gas flow tube being horizontally inserted, gas flow tube radial level both sides are come from semicoke cooler (8)
Venthole is provided with, circulating air (k) passes through the bed for moving from top to bottom by venthole, and heat occurs with hot semicoke (d) directly contact
Exchange, the air-flow after heat exchange is discharged after converging, discharge hot blast (i) temperature is 200~250 DEG C, by hot blast sack cleaner
(10) drier (3) is entered after removing semicoke dust as Drying Source, dry wind (j) entrance for having dried dries gas dedusting
Device (11), after removing coal dust, uses, the circulating air (k) after supercharging and newly supplement through recycle gas cooler (12) supercharging Posterior circle
Nitrogen be cooled to 32~45 DEG C through recycle gas cooler after, into semicoke cooler (8) as cooling medium, and be cooled to 80
~100 DEG C of semicokes (d) are discharged after adjusting flow by the semicoke material discharging machine (9) of discharging opening after being collected through bottom end cover (8-3).
10. internal heat type roller accumulation of heat wall pulverized coal pyrolysis technique according to claim 9, it is characterised in that step 1) before
It is further comprising the steps of：
After 0~20mm feed coals (a) is through feed coal surge bunker (1) and feed coal batcher (2) regulation feed coal inlet amount, by doing
One end of dry device (3) enters, and the cylinder of drier (3) rotates under electric driving mechanism, and mean speed is 10~15r/min,
Drive the moving plate (3-2) in being arranged on to rotate together when dryer cartridge rotates, make feed coal (a) in the drier (3) around
It is dynamic, along dryer cartridge axially into hot blast (i) realize contact heat-exchanging with the feed coal (a) of moving, and take away the water of volatilization
Vapour, feed coal (a) is heated to 75~100 DEG C by normal temperature turns into moisture-free coal (b), and predry is entered by the other end of drier (3)
Evaporate device (4)；
Step 3) also include afterwards：
Pyrolysis oil gas (h) that pyrolysis installation is produced cold bulging tar recovery method treatment, the coal gas after treatment one known to
It is the fuel gas of dry distiller (6) to be allocated as.
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| CN106753492B (en) | 2024-02-09 |
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