CN208087556U - A kind of high-pressure gasified thermal decomposition integrated makeup of fine coal is set - Google Patents
A kind of high-pressure gasified thermal decomposition integrated makeup of fine coal is set Download PDFInfo
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- CN208087556U CN208087556U CN201721584381.8U CN201721584381U CN208087556U CN 208087556 U CN208087556 U CN 208087556U CN 201721584381 U CN201721584381 U CN 201721584381U CN 208087556 U CN208087556 U CN 208087556U
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- 239000003245 coal Substances 0.000 title claims abstract description 105
- 238000005979 thermal decomposition reaction Methods 0.000 title claims abstract description 33
- 238000000197 pyrolysis Methods 0.000 claims abstract description 113
- 239000007789 gas Substances 0.000 claims abstract description 104
- 238000002309 gasification Methods 0.000 claims abstract description 91
- 238000010791 quenching Methods 0.000 claims abstract description 50
- 238000000926 separation method Methods 0.000 claims abstract description 33
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 14
- 239000001257 hydrogen Substances 0.000 claims abstract description 14
- 238000004064 recycling Methods 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 22
- 238000003786 synthesis reaction Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 239000003870 refractory metal Substances 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 206010030973 Oral discomfort Diseases 0.000 claims 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims 1
- 235000011613 Pinus brutia Nutrition 0.000 claims 1
- 241000018646 Pinus brutia Species 0.000 claims 1
- 238000000034 method Methods 0.000 description 13
- 239000003077 lignite Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000011269 tar Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000000571 coke Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005984 hydrogenation reaction Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000004021 humic acid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000001914 calming effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011286 gas tar Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Abstract
The utility model is related to a kind of high-pressure gasified thermal decomposition integrated makeups of fine coal to set, including be sequentially connected gasification section, Quench section, pyrolysis section, refrigerated separation section and the semicoke recycling section of the gasification furnace for constituting closed cycle structure；Gasification section includes gasification piece housing, gasification section refractory matter, steam jet, raw coal burner and lime-ash outlet；Quench section includes the Quench piece housing of the pressure-bearing positioned at outside and the Quench section refractory matter and at least two Quench gas jets for cooling down high-temperature gas for bearing high temperature inside Quench piece housing；Pyrolysis section includes pyrolysis piece housing, pyrolysis section refractory matter, one section of raw coal burner, pyrolysis section inner member and two sections of hydrogen nozzles；Refrigerated separation section includes pressure-bearing shell, refrigerated separation section refractory matter is provided in pressure-bearing shell, it includes semicoke sending cans that semicoke, which recycles section, semicoke delivery pipe is provided in semicoke sending cans, treating capacity is big, and tar yield is high, light oil content is high, and device height is low, and tar dustiness is small.
Description
Technical field
The utility model is related to bed pulverized coal gasification technology fields, are related to the sub-prime classification clean and effective comprehensive utilization technique of coal,
It is set more particularly to a kind of high-pressure gasified thermal decomposition integrated makeup of fine coal.
Background technology
Coal resources in China rich reserves, and oil, natural gas resource relative shortage, China's oil in 2010 it is external according to
Degree of depositing has been up to 55%.In addition, there are about 20% inside the oil that China consumes every year to be used as industrial chemicals production chemical industry production
Product.Therefore, produced using the coal resources of reserves relative abundance and substitute oil product, chemical products and coal gas, alleviate China's oil into
Mouth pressure and natural gas consumption pressure, have a very important significance.And worldwide using lignite, jet coal as representative
Low-order coal occupies prodigious ratio again.According to measuring and calculating, whole world lignite oil in place is about 4,000,000,000,000 tons, and lignite guarantor has verified in China
It is 1311.42 hundred million tons to have reserves, accounts for about the 13% of coal reserves.Chinese lignite resource is mainly distributed on Inner Mongolia Autonomous Region
East and Yunnan Province are domestic.Brown moisture in coal, ash content and oxygen content, oil content are higher, and phosphorus content, sulfur content are low, volatile matter one
As 45%~55%, no cohesiveness, thermal stability is poor, and chemical reaction is strong, the humic acid containing inequality, calorific value when burning
Low, easy-weathering spontaneous combustion when storage, unit energy transportation cost is high, is unfavorable for long-distance transportation and storage.Based on lignite property
Particularity, processing and utilization mode mainly have：Combustion power generation, liquefaction, pyrolysis, coking, produces chemical products humic acid at gasification
Deng.It is relatively low near coal-mine power generation calorific value since lignite moisture is high, generate a large amount of powder when reducing the utilization rate of lignite, and burning
Dirt and CO seriously pollute environment, therefore lignite upgrading becomes the primary premise that lignite utilizes.Especially to a large amount of in low-order coal
How fine coal realizes that comprehensive utilization more becomes insoluble problem.
The technology that lignite upgrading mainly uses in the prior art is using upright square stove, revolving bed and moving bed as the fixation of representative
Bed, this technology has had certain application case (such as good magnificent stove), but this kind of technology can only utilize the block of 3-8mm or more
Coal.And at present for the low-order coal of powdery, it is heat that main method, which includes using pulverized coal friring as heat source and with low pressure syn-gas, at present
Two methods of source.A certain amount of semicoke can be consumed using flue gas or by flue gas semicoke as the pulverized coal pyrolysis technology of heat source, and
And the semicoke after being pyrolyzed must also be cooled to room temperature, this process can cause the ash content in semicoke to greatly increase.And it is closed with low pressure
At the pyrolytic process that gas is heat source, since the size of capacity of low pressure gasifying stove is limited, cause the heat source of pyrolysis oven is limited can not increase
On a large scale, therefore the pyrolysis oven production capacity of this method is limited.
The Chinese utility model document of 203373318 U of Publication No. CN discloses a kind of pulverized coal fluidized bed pyrolysis system,
It includes fluidized bed pyrolysis stove, gas distributor, semicoke hopper, multi-cyclone, decontaminating separator, coke guidance tube, gas
Distributor is located in fluidized bed pyrolysis stove, and multi-cyclone is connect with gas distributor, semicoke hopper by coke guidance tube with
Gas distributor connects, and decontaminating separator is connect with multi-cyclone.The pulverized coal fluidized bed pyrolysis system utilizes High Temperature Gas
Heat source of the sensible heat of body as fluidized bed pyrolysis solves the problems, such as the utilization ratio of high-temperature gas sensible heat, while pulverized coal pyrolysis being divided
Grade upgrading is converted into coal gas, semicoke and coal tar.The pulverized coal fluidized bed pyrolysis system utilizes bottom by optimizing in fluid bed
Coal and oxygen generating unit divided combustion, are pyrolyzed using the sensible heat of flue gas, reduce high-temperature gas conveying problem, while passing through gas
Body is in direct contact with fine coal and increases heat exchange efficiency；But since the patent uses the partially combusted method combustion process of fine coal
In will produce a large amount of lime-ash, and these lime-ash mix common discharge with semicoke, can greatly increase the ash content in semicoke
Content, secondly because the higher grain size that can cause coke breeze of ignition temperature increases, to increase the utilization difficulty of later stage semicoke；Finally
Since burning will produce a large amount of flue gas, this can substantially reduce the quality of pyrolysis gas.
The Chinese invention patent document of Publication No. CN 106987281A discloses pulverized coal pyrolysis gasification integrated reactor
With the method for processing fine coal.Pulverized coal pyrolysis gasification integrated reactor include：It is pyrolyzed furnace body, inside defines more pyrolysis chambers,
Multiple radiant tubes are provided in pyrolysis chamber, the top for being pyrolyzed furnace body has fine coal entrance, and the bottom end for being pyrolyzed furnace body has semicoke
Outlet, being pyrolyzed on furnace body has syngas outlet, and there is the side wall for being pyrolyzed furnace body the fuel inlet of connection radiant tube and flue gas to go out
Mouthful；Gasify furnace body, inside defines gasification chamber, and there is gasification agent inlet, the top for the furnace body that gasifies to have half on the furnace body that gasifies
The bottom end of burnt entrance, the furnace body that gasifies is exported with lime-ash, and gasification furnace body is located at below pyrolysis furnace body, and semicoke entrance and outlet phase
Even.The semicoke that can be obtained pulverized coal pyrolysis using pulverized coal pyrolysis gasification integrated reactor is converted into synthesis gas, and
The sensible heat of synthesis gas is made full use of, while solving the Utilizing question of semicoke.Pulverized coal pyrolysis gasification integrated reactor is utilized
Pyrolysis oven and gasification furnace are coupled to have obtained integrated apparatus, be can make full use of the sensible heat of synthesis gas and are made full use of partly
It is burnt.But first, which causes the heat transfer efficiency of device relatively low using the mode of indirectly heat, single stove treating capacity by
To certain limitation, fast pyrogenation cannot achieve.Secondly, which passes through itself weight on the top of gasification furnace, material
Power, which is realized to fall, enters gasification furnace, and therefore, which cannot handle the foam coal that grain size reaches tens micron levels, this is also by rear
The Particle size requirements of 10mm are confirmed in the patent requirements in face；Finally, two furnace bodies are arranged up and down can cause single unit system very
High (overall height is in 100m or so) builds for frame and ensures that installation security increases difficulty.
Utility model content
The purpose of this utility model is to provide one kind capable of realizing the efficient cascade utilization of low-order coal output coal tar simultaneously
Fine coal high-pressure gasified thermal decomposition integrated makeup with gasification gas is set, to solve in the presence of the prior art with flue gas or pass through cigarette
Gas heating semicoke, which is the pulverized coal pyrolysis technology of heat source, can consume a certain amount of semicoke, and the semicoke after pyrolysis must also be cooled to
Room temperature, this process can cause the ash content in semicoke to greatly increase, or using low pressure syn-gas as the pyrolytic process of heat source, due to low
It presses the size of capacity of gasification furnace limited, causes the heat source of pyrolysis oven is limited can not increase scale, cause its pyrolysis oven production capacity limited
The problem of.
To achieve the above object, it is high to provide a kind of fine coal that can realize high pressure direct hydrogenation pyrolytic gasification for the utility model
The makeup of calming the anger thermal decomposition integrated is set, including is sequentially connected the gasification section, Quench section, pyrolysis of the gasification furnace for constituting closed cycle structure
Section, refrigerated separation section and semicoke recycle section；
The gasification section includes gasification piece housing, gasification section refractory matter, steam jet, raw coal burner and lime-ash outlet；
The gasification section refractory matter is arranged in the inside of the gasification piece housing, the steam jet, the raw coal burner and described
Lime-ash outlet is separately positioned on the gasification piece housing；
The Quench piece housing and the use inside the Quench piece housing that the Quench section includes the pressure-bearing positioned at outside
In the Quench section refractory matter for bearing high temperature and at least two Quench gas jets for cooling down high-temperature gas；The Quench gas blowout
Mouth is arranged on the Quench piece housing；
The pyrolysis section includes pyrolysis piece housing, pyrolysis section refractory matter, one section of raw coal burner, pyrolysis section inner member and two sections
Hydrogen nozzle；The pyrolysis section refractory matter is arranged in the pyrolysis piece housing, in one section of raw coal burner, the pyrolysis section
Component and two sections of hydrogen nozzles are from top to bottom successively set on the pyrolysis piece housing；
Refrigerated separation section includes pressure-bearing shell, and refrigerated separation section refractory matter, the pressure-bearing are provided in the pressure-bearing shell
The top trepanning of shell is connected with the inner cylinder of pyrolysis section bottom end, is divided into two chambers by partition board inside the pressure-bearing shell,
The chamber top is provided at least two internal cyclones being connected with the inner cylinder of pyrolysis section；The gas vent setting of internal cyclone exists
At chamber described in top, it is discharged by the gas vent of pyrolysis gas and synthesis gas after gas collection；The dipleg of internal cyclone is worn
The partition board is crossed to stretch into the bed of material of chamber described in lower part；Cloth on the indoor bed of material of chamber described in lower part as semicoke cooling
Equipped with coil pipe or comb cooler, to be cooled down indirectly to semicoke by the cooling water in pipe, with according to semicoke discharge valve
It is required that semicoke is cooled down, chamber described in lower part is connected with loosening gas by loosening gas entrance and loosening gas outlet；
The semicoke recycling section includes semicoke sending cans, and semicoke delivery pipe is provided in the semicoke sending cans, described
The top of semicoke sending cans is provided with semicoke entrance, and conveying gas entrance, the semicoke are provided in the middle part of the semicoke sending cans
The bottom of sending cans is provided with the emergent discharge port of semicoke.
Optionally, the gasification section of the gasification of high-pressure pulverized coal thermal decomposition integrated is used with pyrolysis section and is arranged in juxtaposition, gasification section
Using air upflow bed, pyrolysis section uses downlink air flow bed operative combination.
Optionally, the Quench section is arranged at the top position of the gasification section.
Optionally, the pyrolysis section is arranged in juxtaposition at the right positions of the Quench section with gasification section.
Optionally, the lower position in the pyrolysis section is arranged in the refrigerated separation section.
Optionally, the lower position in the refrigerated separation section is arranged in the semicoke recycling section.
Optionally, internal cyclone is set as refractory metal or ceramic material.
Optionally, the coil pipe or comb cooler cool down semicoke by the cooling water in pipe indirectly, by semicoke
It is cooled to DEG C.
Optionally, the steam jet and the raw coal burner are from top to bottom successively set on the gasification piece housing
Lower part.
Optionally, the lime-ash outlet is arranged in the bottom of the gasification piece housing.
The utility model has the following advantages that：
The high-pressure gasified thermal decomposition integrated makeup of the fine coal of the utility model is set, can solve in the presence of the prior art with cigarette
Gas can consume a certain amount of semicoke by the pulverized coal pyrolysis technology that flue gas semicoke is heat source, and the semicoke after pyrolysis is also
Room temperature is must be cooled to, this process can cause the ash content in semicoke to greatly increase, or using low pressure syn-gas as the pyrolysis of heat source
Process causes the heat source of pyrolysis oven is limited can not increase scale, leads to its pyrolysis since the size of capacity of low pressure gasifying stove is limited
The limited problem of stove production capacity；It is realized low by the way that the gasification of air upflow bed and the pyrolysis of downlink air flow bed are carried out organic assembling
Rank coal high-voltage high-speed is pyrolyzed and gasification integration, obtains the advantages that single stove treating capacity is high, and tar yield is high, and light oil constituents is more,
Simultaneously the big oily dirt of product gas dustiness is significantly reduced by adding the components such as gas solid separation and semicoke cooling inside equipment
The difficult difficulty with semicoke conveying of separation, the last present apparatus passes through pyrolysis oven and the unique mode of operation of gasification furnace combines so that
Pyrolysis oven and gasification furnace can be run side by side, greatly shortened the fed distance of high-temperature gas and semicoke, improved equipment
Safety, and reduce the height of integral device.
Description of the drawings
Fig. 1 is that the high-pressure gasified thermal decomposition integrated of fine coal of the utility model disguises the structural schematic diagram set.
Fig. 2 is the structural schematic diagram for the gasification section that the high-pressure gasified thermal decomposition integrated makeup of fine coal of the utility model is set.
Fig. 3 is the structural schematic diagram for the Quench section that the high-pressure gasified thermal decomposition integrated makeup of fine coal of the utility model is set.
Fig. 4 is the structural schematic diagram for the pyrolysis section that the high-pressure gasified thermal decomposition integrated makeup of fine coal of the utility model is set.
Fig. 5 is the structural schematic diagram for the refrigerated separation section that the high-pressure gasified thermal decomposition integrated makeup of fine coal of the utility model is set.
Fig. 6 is the structural representation for the semicoke recycling section that the high-pressure gasified thermal decomposition integrated makeup of fine coal of the utility model is set
Figure.
Fig. 7 is that the high-pressure gasified thermal decomposition integrated of fine coal of the utility model disguises the operation principle schematic diagram set.
In figure, 1 is gasification section, and 2 be Quench section, and 3 be pyrolysis section, and 4 be refrigerated separation section, and 5 recycle section for semicoke；1-1
For the piece housing that gasifies, 1-2 is gasification section refractory matter, and 1-3 is steam jet.1-4 is raw coal burner, and 1-5 exports for lime-ash；2-
1 is Quench piece housing, and 2-2 is Quench section refractory matter, and 2-3 is Quench gas jets；3-1 is pyrolysis piece housing, and 3-2 is that pyrolysis section is resistance to
Fire material, 3-3 are one section of raw coal burner, and 3-4 is pyrolysis section inner member, and 3-5 is two sections of hydrogen nozzles；4-1 is inner cylinder, and 4-2 is to hold
Pressure shell body, 4-3 are refrigerated separation section refractory matter, and 4-4 is internal cyclone, and 4-5 is partition board, and 4-6 is coil pipe or comb cooler, 4-7
To loosen gas entrance, 4-8 is semicoke discharge valve, and 4-9 is to loosen gas outlet, and 4-10 is gas vent, and 5-1 is semicoke entrance, 5-2
For semicoke sending cans, 5-3 is conveying gas entrance, and 5-4 is the emergent discharge port of semicoke, and 5-5 is semicoke delivery pipe.
Specific implementation mode
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
Embodiment
A kind of high-pressure gasified thermal decomposition integrated makeup of fine coal is set, and referring to Fig. 1, including is sequentially connected and is constituted closed cycle structure
Gasification section 1, Quench section 2, pyrolysis section 3, refrigerated separation section 4 and the semicoke of gasification furnace recycle section 5；
Referring to Fig. 2, the gasification section 1 includes gasification piece housing 1-1, gasification section refractory matter 1-2, steam jet 1-3, original
Coal burner 1-4 and lime-ash export 1-5；The gasification section refractory matter 1-2 is arranged in the inside of the gasification piece housing 1-1, described
Steam jet 1-3, the raw coal burner 1-4 and lime-ash outlet 1-5 are separately positioned on the gasification piece housing 1-1；
Referring to Fig. 3, the Quench section 2 include positioned at outside pressure-bearing Quench piece housing 2-1 and be located at the Quench section
The Quench section refractory matter 2-2 and at least two for bearing high temperature inside shell 2-1 is used to cool down the Quench gas of high-temperature gas
Nozzle 2-3；The Quench gas jets 2-3 is arranged on the Quench piece housing 2-1；
Referring to Fig. 4, the pyrolysis section 3 include pyrolysis piece housing 3-1, pyrolysis section refractory matter 3-2, one section of raw coal burner 3-3,
Pyrolysis section inner member 3-4 and two sections of hydrogen nozzle 3-5；The pyrolysis section refractory matter 3-2 is arranged in the pyrolysis piece housing 3-1
Interior, one section of raw coal burner 3-3, the pyrolysis section inner member 3-4 and two sections of hydrogen nozzles 3-5 are from top to bottom set successively
It sets on the pyrolysis piece housing 3-1；
Referring to Fig. 5, refrigerated separation section 4 includes being provided with refrigerated separation section in pressure-bearing shell 4-2, the pressure-bearing shell 4-2
The top trepanning of refractory matter 4-3, the pressure-bearing shell 4-2 are connected with the inner cylinder 4-1 of 3 bottom end of pyrolysis section, the pressure-bearing shell
It is two chambers to be divided by partition board 4-5 inside 4-2, and the chamber top is provided at least two inner cylinder 4-1 phases with pyrolysis section 3
The internal cyclone 4-4 of connection；The gas vent setting of internal cyclone 4-4 passes through pyrolysis gas at the chamber described in top after gas collection
It is discharged with the gas vent 4-10 of synthesis gas；The dipleg of internal cyclone 4-4 stretches into chamber described in lower part across the partition board 4-5
The bed of material in；It is laid with coil pipe or comb cooler 4-6 on the indoor bed of material of chamber described in lower part as semicoke cooling, with
Semicoke is cooled down indirectly by the cooling water in pipe, semicoke to be cooled down according to the requirement of semicoke discharge valve 4-8, lower part institute
It states chamber and is connected with loosening gas by loosening gas entrance 4-7 and loosening gas outlet 4-9；
Referring to Fig. 6, the semicoke recycling section 5 includes being provided on semicoke sending cans 5-2, the semicoke sending cans 5-2
The top of semicoke delivery pipe 5-5, the semicoke sending cans 5-2 are provided in semicoke entrance 5-1, the semicoke sending cans 5-2
The bottom that portion is provided with conveying gas entrance 5-3, the semicoke sending cans 5-2 is provided with the emergent discharge port 5-4 of semicoke.
The high-pressure gasified thermal decomposition integrated makeup of fine coal of the present embodiment is set, and gasification piece housing 1-1 is mainly used for bearing pressure, and
It is used to bear the high temperature and air flow bed of gasification reaction with certain thickness gasification section refractory material 1-2 inside gasification section 1
Quickly wash away.The Quench piece housing 2-1 of Quench section 2 be located at outside and be used for pressure-bearing, Quench section refractory matter 2-2 it is internally positioned and
For bearing high temperature, Quench gas jets 2-3 is for cooling down high-temperature gas.It is pyrolyzed the work of piece housing 3-1 and pyrolysis section refractory matter 3-2
It is washed away with the high temperature and fine coal of respectively pressure-bearing and tolerance pyrolysis, the effect of one section of raw coal burner 3-3 mainly sprays into raw coal, with
High-temperature synthesis gas mixing is pyrolyzed, and the effect of pyrolysis section inner member 3-4 mainly promotes mixing efficiency, improves heat-transfer effect,
The effect of two sections of hydrogen nozzle 3-5 is to improve hydrogen partial pressure, realizes high-temperature hydrogenation pyrolysis, improves light oil constituents content.Pyrolysis section 3
The refrigerated separation section 4 and semicoke of lower end connection recycle section 5, and main function is to realize gas and semicoke at high temperature and pressure
The pre-separation of fine coal and the cooling of semicoke.Internal cyclone 4-4 mainly plays gas solid separation, since whirlwind inside and outside differential pressure is little,
Therefore, internal cyclone 4-4 is not subject to pressure substantially, and refractory metal can be selected or ceramics are used as material.The lower part of refrigerated separation section 4
Chamber main function is the cooling of semicoke, coil pipe or comb cooler 4-6 is furnished in the indoor bed of material of lower chamber, by pipe
Cooling water semicoke is cooled down indirectly, semicoke is cooled to 300 DEG C or so to meet the requirement of semicoke discharge valve 4-8,
Simultaneously in order to improve the heat transfer coefficient and mobility of semicoke, 4-9 is exported by loosening gas entrance 4-7 and loosening gas in lower chamber
It is connected with loosening gas.
The high-pressure gasified thermal decomposition integrated makeup of fine coal of the present embodiment is set, and referring to Fig. 7, raw coal and oxygen pass through 1 side of gasification section
Multiple raw coal burner 1-4 of wall are entered, and high-temp combustion occurs in gasification section 1, to provide heat source for device, then unreacted
Raw coal and semicoke from semicoke delivery pipe and vapor gasification reaction occurs, generations high-temperature synthesis gas main component is CO
And H2, W-response carry out under the conditions of pressure 4MPa, 1100-1400 DEG C of temperature, the slag produced in gasification reaction is with liquid shape
Formula is discharged from outlet at bottom downwards, and 1300 DEG C or so high-temperature synthesis gas are upwardly into Quench section 2.High temperature into Quench section 2 closes
At gas 800 DEG C or so are gradually cooled to by being mixed with 200 DEG C or so of the Quench gas from multiple Quench gas jets 2-3
By entering pyrolysis section after top elbows.Pass through with one section of raw coal nozzle 3-3's in 800 DEG C or so of synthesis gas of pyrolysis section 3
Raw coal hybrid cooling occurs fast pyrogenation to 500 DEG C or so and reacts, and pyrolytic reaction is that gas-solid downlink cocurrent air flow bed is reacted, reaction
Residence time is about 4s, while being passed through high-temperature hydrogen in pyrolysis section 3 and hydrogenation reaction occurs, and carries out tar lighting.After reaction
Gas and semicoke carry out gas solid separation by the multiple internal cyclone 4-4 being connected with 3 lower end of pyrolysis section, and gas passes through internal cyclone 4-4
The gas vent on top is discharged after being pooled to 4 upper-part centralized gas chamber of refrigerated separation section from product gas outlet, carries out further gas-solid point
Clean synthesis gas and tar are obtained from tar cooling.The semicoke isolated is discharged into refrigerated separation by the dipleg of internal cyclone 4-4
4 lower part dust storage chambers of section then occur indirect heat exchange by the coil pipe or comb cooler 4-6 with embedment feed bin and are cooled down, cold
But the semicoke to about 300 DEG C is discharged into semicoke sending cans by semicoke discharge valve 4-8, and being conveyed into gasification furnace by conveying gas is used as gas
Change feed coal and carries out gasification reaction.
The high-pressure gasified thermal decomposition integrated makeup of the fine coal of the present embodiment is set, by by dry coal powder airflow bed uplink gasification furnace under
Promoting the circulation of qi fluidized bed fast pyrogenation is combined, and realizes the pyrolysis of fine coal high-voltage high-speed and the high-pressure gasified coupling integrated Poly-generation of semicoke.
The device has the characteristics that fine coal treating capacity is big, operation is mature and stable, hydrogen-rich fast pyrogenation, tar yield is high, light oil content is high,
The high-temperature semi-coke that can be especially generated using pyrolysis is carried out gasification reaction and generates high temperature and pressure synthesis gas, and the heat of this strand of synthesis gas
Amount directly can rationally utilize again as the heat source of low-order coal pyrolytic reaction, energy, and consumption is low.The present apparatus with upright square stove, revolve
Rotated bed and moving bed be the fixed bed of representative and compared with the fluidized bed pyrolysis of solid thermal carriers with gas, first by by gas
Change stove and pyrolysis oven has carried out organic assembling, by gasification furnace synthesis gas uplink, the scheme of pyrolysis oven raw coal downlink is realized to powder
The processing of coal and scale is big；Secondly, present apparatus product gas only has 5s or so in 3 residence time of pyrolysis section, and contains a large amount of hydrogen
The reaction of synthesis gas direct contact heat transfer, and synthesis pressure is higher (4MPa), realize plus hydrogen fast pyrogenation, therefore the present apparatus
Tar yield significantly improves, and light oil proportion greatly increases；Again, the present apparatus is adequately sharp by gasification furnace and pyrolysis oven combination
With the sensible heat of gasification synthesis gas and pyrolysis char, while the combination of two sections of different traffic directions, substantially reduce high-temperature semi-coke
Fed distance with high-temperature synthesis gas and whole device height, to realize integrated apparatus；Finally, in the present apparatus
The devices such as internal cyclone 4-4, built-in coil pipe or comb cooler 4-6 are additionally provided with, the gas of the present apparatus is thus greatly reduced out
Dustiness and semicoke temperature, in follow-up phase gas tar separation and semicoke conveying reduce difficulty.Present apparatus needle
To the insufficient fine coal high pressure pyrolytic gasification one using the gasification of air upflow bed and the pyrolysis of downlink pyrolysis oven proposed of current techniques
Body makeup is set, and can reach the requirement that processing grain size is less than the fine coal of 50um or so, device tool fully profit through the above scheme
With high-temperature synthesis gas and pyrolysis char sensible heat, unit capacity is big, and tar yield is high, and light oil content is high, low, the tar of device height
The advantages that content amount is small, integrated multi-connection production design.
In another specific embodiment, the setting of the gasification section 1 is set in the high-pressure gasified thermal decomposition integrated makeup of the fine coal
Left bottom position at.
In another specific embodiment, gasification section 1 and the pyrolysis section 3 of the gasification of high-pressure pulverized coal thermal decomposition integrated use
It is arranged in juxtaposition, gasification section 1 uses air upflow bed, pyrolysis section 3 to use downlink air flow bed operative combination；It is effectively reducing equipment
The fed distance that high-temperature gasification gas and high-temperature semi-coke are substantially reduced while height reduces the manufacture of high-temperature pipe and valve
Difficulty.
In another specific embodiment, the Quench section 2 is arranged at the top position of the gasification section 1.
In another specific embodiment, the pyrolysis section 3 at the right positions of the Quench section 2 with gasification section 1 simultaneously
Row arrangement.
In another specific embodiment, the lower position in the pyrolysis section 3 is arranged in the refrigerated separation section 4, and
The separation, dedusting, cooling that refrigerated separation section realizes semicoke are completed in same housing section, avoid the conveying of high temperature and pressure semicoke
Problem, while reducing the investment of shell.
In another specific embodiment, the lower position in the refrigerated separation section 4 is arranged in the semicoke recycling section 5
Place.
In another specific embodiment, internal cyclone 4-4 is set as refractory metal or ceramic material.
In another specific embodiment, the coil pipe or comb cooler 4-6 by the cooling water in pipe to semicoke into
Cooling is in the ranks connect, semicoke is cooled to 300 DEG C.
In another specific embodiment, the steam jet 1-3 and the raw coal burner 1-4 are from top to bottom set successively
It sets in the lower part of the gasification piece housing 1-1.
In another specific embodiment, the lime-ash outlet 1-5 is arranged in the bottom of the gasification piece housing 1-1.
The high-pressure gasified thermal decomposition integrated makeup of fine coal of the utility model is set, in another embodiment：Using straight
Diameter is 4 meters, and a height of 16 meters of gasification furnace exists with the integrated apparatus that a diameter of 2 meters a height of 20 meters of pyrolysis sections 3 are arranged side by side
4MPa, gasify to the semicoke of 28t/h and the raw coal of 12t/h at 1300 DEG C, 90000Nm can be obtained3The high―temperature nuclei of/h
Gas, by with 90000Nm3300 DEG C of low temperature synthesis gas of/h, which carry out Quench mixing, can obtain 180000Nm3800 DEG C of synthesis of/h
Gas.The drying brown coal of the synthesis gas and 40t/h are pyrolyzed when being blended in 500 DEG C, and the semicoke that can obtain 28t/h enters gasification
Stove, while obtaining 7500Nm3The pyrolysis gas of/h, the tar of 2.4t/h.Whole device is using 50 μm or so of mean particle diameter
Dry pulverized coal is fed, and handles lignite.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (10)
1. a kind of high-pressure gasified thermal decomposition integrated makeup of fine coal is set, including is sequentially connected the gas for the gasification furnace for constituting closed cycle structure
Change section (1), Quench section (2), pyrolysis section (3), refrigerated separation section (4) and semicoke recycling section (5)；It is characterized in that,
The gasification section (1) includes gasification piece housing (1-1), gasification section refractory matter (1-2), steam jet (1-3), raw coal burning
Mouth (1-4) and lime-ash outlet (1-5)；The gasification section refractory matter (1-2) is arranged in the inside of the gasification piece housing (1-1),
The steam jet (1-3), the raw coal burner (1-4) and lime-ash outlet (1-5) are separately positioned on the gasification section
On shell (1-1)；
The Quench section (2) include positioned at outside pressure-bearing Quench piece housing (2-1) and be located at the Quench piece housing (2-1)
The internal Quench section refractory matter (2-2) and at least two Quench gas jets for cooling down high-temperature gas for bearing high temperature
(2-3)；The Quench gas jets (2-3) are arranged on the Quench piece housing (2-1)；
The pyrolysis section (3) includes pyrolysis piece housing (3-1), pyrolysis section refractory matter (3-2), one section of raw coal burner (3-3), pyrolysis
Section inner member (3-4) and two sections of hydrogen nozzles (3-5)；The pyrolysis section refractory matter (3-2) is arranged in the pyrolysis piece housing (3-
1) in, one section of raw coal burner (3-3), the pyrolysis section inner member (3-4) and two sections of hydrogen nozzles (3-5) by up to
Under be successively set on the pyrolysis piece housing (3-1)；
Refrigerated separation section (4) includes pressure-bearing shell (4-2), and refrigerated separation section refractory matter is provided in the pressure-bearing shell (4-2)
The top trepanning of (4-3), the pressure-bearing shell (4-2) are connected with the inner cylinder (4-1) of pyrolysis section (3) bottom end, the pressure-bearing shell
Body (4-2) is internal to be divided into two chambers by partition board (4-5), and the chamber top is provided at least two and pyrolysis section (3)
The internal cyclone (4-4) that inner cylinder (4-1) is connected；At the chamber described in top, gas converges for the gas vent setting of internal cyclone (4-4)
It is discharged by the gas vent (4-10) of pyrolysis gas and synthesis gas after collection；The dipleg of internal cyclone (4-4) passes through the partition board
(4-5) is stretched into the bed of material of chamber described in lower part；It is laid on the indoor bed of material of chamber described in lower part as semicoke cooling
Coil pipe or comb cooler (4-6), to be cooled down indirectly to semicoke by the cooling water in pipe, with according to semicoke discharge valve
The requirement of (4-8) cools down semicoke, and chamber described in lower part is connected with pine by loosening gas entrance (4-7) and loosening gas outlet (4-9)
It takes offence；
The semicoke recycling section (5) includes semicoke sending cans (5-2), and it is defeated to be provided with semicoke on the semicoke sending cans (5-2)
Pipe (5-5), the top of the semicoke sending cans (5-2) is sent to be provided with semicoke entrance (5-1), the semicoke sending cans (5-2)
Middle part is provided with conveying gas entrance (5-3), and the bottom of the semicoke sending cans (5-2) is provided with the emergent discharge port (5-4) of semicoke.
2. the high-pressure gasified thermal decomposition integrated makeup of fine coal as described in claim 1 is set, which is characterized in that the fine coal is high-pressure gasified
For the gasification section (1) that thermal decomposition integrated makeup is set with pyrolysis section (3) using being arranged in juxtaposition, gasification section (1) uses air upflow bed, pyrolysis
Section (3) uses downlink air flow bed operative combination.
3. the high-pressure gasified thermal decomposition integrated makeup of fine coal as claimed in claim 2 is set, which is characterized in that the Quench section (2) sets
It sets at the top position of the gasification section (1).
4. the high-pressure gasified thermal decomposition integrated makeup of fine coal as claimed in claim 3 is set, which is characterized in that the pyrolysis section (3) exists
It is arranged in juxtaposition with gasification section (1) at the right positions of the Quench section (2).
5. the high-pressure gasified thermal decomposition integrated makeup of fine coal as claimed in claim 4 is set, which is characterized in that the refrigerated separation section
(4) lower position of the setting in the pyrolysis section (3).
6. the high-pressure gasified thermal decomposition integrated makeup of fine coal as claimed in claim 5 is set, which is characterized in that the semicoke recycles section
(5) lower position of the setting in the refrigerated separation section (4).
7. the high-pressure gasified thermal decomposition integrated makeup of fine coal as claimed in claim 6 is set, which is characterized in that internal cyclone (4-4) is arranged
For refractory metal or ceramic material.
8. the high-pressure gasified thermal decomposition integrated makeup of fine coal as claimed in claim 7 is set, which is characterized in that the coil pipe or comb are cold
But device (4-6) cools down semicoke by the cooling water in pipe indirectly, and semicoke is cooled to 300 DEG C.
9. the high-pressure gasified thermal decomposition integrated makeup of fine coal as claimed in claim 8 is set, which is characterized in that the steam jet
(1-3) and the raw coal burner (1-4) are from top to bottom successively set on the lower part of the gasification piece housing (1-1).
10. the high-pressure gasified thermal decomposition integrated makeup of fine coal as claimed in claim 9 is set, which is characterized in that the lime-ash exports (1-
5) setting is in the bottom of the gasification piece housing (1-1).
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| CN107723031A (en) * | 2017-11-23 | 2018-02-23 | 航天长征化学工程股份有限公司 | High-pressure gasification and pyrolysis integrated device for pulverized coal |
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