CN205974374U - Syngas system is produced in pyrolysis of coal and schizolysis - Google Patents

Syngas system is produced in pyrolysis of coal and schizolysis Download PDF

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Publication number
CN205974374U
CN205974374U CN201620456535.4U CN201620456535U CN205974374U CN 205974374 U CN205974374 U CN 205974374U CN 201620456535 U CN201620456535 U CN 201620456535U CN 205974374 U CN205974374 U CN 205974374U
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China
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gas
pyrolysis
cracking
heat
reactor
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CN201620456535.4U
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Chinese (zh)
Inventor
耿层层
陈水渺
肖磊
薛逊
吴道洪
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Shenwu Technology Group Corp Co Ltd
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Beijing Shenwu Environmental and Energy Technology Co Ltd
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Abstract

The utility model provides a syngas system is produced in pyrolysis of coal and schizolysis, include: the pyrolysis hopper, a feed arrangement, a feed arrangement with the pyrolysis hopper is connected, pyrolysis and cracking reactor include: thermal -insulated brick wall will the inside space separation of reactor becomes the pyrolysis chamber with splitting chamber, communication member, communication member sets up the lower part of thermal -insulated brick wall, the spray column, the spray column with cracked gas outlet connects, the reborner, the reborner with the spray column is connected, the gas jar, the gas jar with the reborner is connected. The oil gas that the pyrolysis chamber produced can get into splitting chamber and carry out deep cracking, be the gaseous hydrocarbons of micro molecule with the burnt oil molecules schizolysis of macromolecule, has really realized fossil fuel's clean high -efficient utilization. The cracking gas can be carbon monoxide and hydrogen with methane and a small number of many carbon gaseous state hydrocarbon conversion in getting into the reborner, synthetic multiple product, like methyl alcohol, ethylene glycol, acetic acid product etc.

Description

A kind of pyrolysis of coal and cracking production of synthetic gas system
Technical field
This utility model belongs to the pyrolysis of coal and cracks aerogenesis technical field and in particular to a kind of be based on heat accumulation type radiant tube Heated particle pyrolysis of coal and cracking system are with producing synthesis gas system.
Background technology
Rich coal resources in China, in addition to part is used for coking, conversion processing, the overwhelming majority is for directly firing for raw coal Burn.Coal directly burns, and leads to the petroleum resources being rich in coal also sufficiently not refined utilization, and the direct combustion heat Efficiency is low, serious to environmental disruption.The pyrolysis of coal is to heat coal under an inert atmosphere, produces semicoke, coal gas and tar etc. and produces Product, these products obtaining, the synthesis of coal with cascade utilization, while petroleum resources is fully extracted, can be improve again again Utilization ratio.Pyrolytic process of coal can be divided into external-heat and internal heat type two class.External heating type heat efficiency is low, and volatility product twice decomposition is tight Weight;Internal heat type technique overcomes the shortcoming of external-heat, by heat carrier(Solid thermal carriers and gas heat carrier)Heat transfer To coal., there are carbonization gas and rushed dilute, condensate recovery system is huge in gas heat carrier technique, gas heating value low it is difficult to comprehensive further Close the shortcoming utilizing.Comparatively solid thermal carriers technique have certain advantage, but there is complex process operation link too Many, the shortcomings of manufacturing cost is high.The existing pyrolysis type of furnace is all to produce oil product as main purpose, but is mostly pyrolyzed the type of furnace, Especially to process the type of furnace as raw material for the fine coal, contain a large amount of dirt in pyrolysis oil, cause pyrolysis oil to be difficult to effectively utilizes, pyrolysis oil The problems such as be worth high.Therefore, how to design all simple pyrolysis of coal of a kind of high-effective dust-removing, system structure and technological process and split Solution production of synthetic gas system becomes the problem of this area urgent need to resolve.
Utility model content
This utility model is directed to the deficiencies in the prior art, designs and develop a kind of pyrolysis of coal and cracking production of synthetic gas system System, this response system can be pyrolyzed and be cracked two kinds of operations, the oil gas that pyrolysis chamber produces, and can enter cracking room and carry out depth Cracking, the tar molecules of macromole is cracked into the gaseous hydrocarbons of small molecule, this reactor can produce substantial amounts of cracking gas, cracking Gas enters in reburner, can be carbon monoxide and hydrogen by methane and minority many carbon gaseous hydrocarbons, synthesis gas can do industrial Basic synthetic raw gas, produce methanol, ethylene glycol, acetate products.This system obviates the problem producing pyrolysis oil dust-laden, very The clean and effective just achieving coal utilizes.System that employs heat accumulation type radiant tube heating technique without gas, solid heat carrier heating, System process is simplified while the thermal efficiency that improve reactor.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is:This utility model provides a kind of coal Pyrolysis and cracking production of synthetic gas system.According to embodiment of the present utility model, this system includes:Pyrolysis hopper;First charging dress Put, described first feed arrangement is connected with described pyrolysis hopper;Pyrolysis and cracking reactor, including:Charging aperture, pyrolysis chamber, split Solution room and cracking gas outlet, described charging aperture is arranged on the roof of described pyrolysis chamber, and described cracking gas outlet is arranged on described On the side wall of cracking room, and:Heat accumulation type radiant tube, described heat accumulation type radiant tube is along the short transverse laminates of described reactor Put inside described pyrolysis chamber and described cracking room, every layer has the many described heat accumulation type radiant tubes arranged in the horizontal direction; Heat-insulated brick wall, described heat-insulated brick wall is arranged at the 2/3 of described reactor transverse width, vertically through in described reactor Interior, the inner space of described reactor is separated into described pyrolysis chamber and described cracking room;Communication member, described communication member sets Put the bottom in described heat-insulated brick wall, for the oil gas producing described pyrolysis chamber, by described communication member, be passed into described Cracking room;Spray column, described spray column is connected with the outlet of described cracking gas;Reburner, described reburner is with described spray column even Connect;Fuel cartridge, described fuel cartridge is connected with described reburner.
Inventor finds, simple according to the synthesis gas system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good.Reactor is divided into pyrolysis chamber and cracking room, the oil gas that pyrolysis chamber produces, and can enter cracking room and carry out Deep pyrolytic, the tar molecules of macromole is cracked into the gaseous hydrocarbons of small molecule, and this reactor can produce substantial amounts of cracking gas, Thus avoiding the problem producing pyrolysis oil dust-laden, combustion gas incendivity generates electricity, and is truly realized the clean and effective profit of Fossil fuel With.Additionally, two kinds of operations can be carried out in a body of heater, unite two into one, save construction cost and floor space, and, this reaction Device employs heat accumulation type radiant tube heating technique without gas, the heating of solid heat carrier, improve reactor the thermal efficiency while letter Change system process.And, cracking gas enters in reburner, can by methane and minority many carbon gaseous hydrocarbons be carbon monoxide and Hydrogen, synthesizes multiple product, such as methanol, ethylene glycol, acetate products etc..
According to embodiment of the present utility model, described communication member is the multiple hole of inclusion being arranged on described heat-insulated brick wall Pore area;Or described communication member is on described heat-insulated brick wall longitudinal length, positioned at the opening of lower position.
According to embodiment of the present utility model, the thickness of described heat-insulated brick wall is 5-15cm, and the height of described pore area is 3- 15cm, a diameter of 1-3cm in described hole, the height of described opening is 3-15cm.
According to embodiment of the present utility model, further include combustion gas pressure fan, wherein, one end of described combustion gas pressure fan Outlet with described spray column is connected, and the other end is connected with the fuel gas inlet of described heat accumulation type radiant tube.
According to embodiment of the present utility model, further include combustion gas air-introduced machine, wherein, described combustion gas air-introduced machine is arranged in Between described spray column and described reburner.
According to embodiment of the present utility model, also include loading hopper;Second feed arrangement, it is connected with described loading hopper; Drying device, it is connected with the exhanst gas outlet on described second feed arrangement and described heat accumulation type radiant tube respectively;Gas solid separation Device, it is connected with described drying device and described pyrolysis hopper respectively;Exhaust gas cleaner, it is filled with described gas solid separation Put and be connected.
According to embodiment of the present utility model, described pyrolysis hopper is by described first feed arrangement and described charging aperture phase Even, further include that semicoke exports, described semicoke outlet is arranged on the bottom of described pyrolysis chamber, described semicoke outlet and described half Burnt conveyer device connects.
In other side of the present utility model, this utility model provides one kind and carries out coal using foregoing system The method of pyrolysis and cracking production of synthetic gas is it is characterised in that comprise the following steps:A. particulate coal is added to instead by charging aperture Answer in device, in the pyrolysis chamber of described reactor, complete pyrolytic process;B. be pyrolyzed the oil gas of generation, by described reactor every On hot brick wall, the communication member of setting, enters into the cracking room of described reactor;C. the oil gas being pyrolyzed generation is in described cracking room Inside complete thermal cracking processes, produce cracking gas;D. described cracking gas is entered in spray column by cracking gas outlet, splits to described Vent one's spleen and carry out purified treatment;E. a purified net cracking gas part enters through the combustion gas that combustion gas pressure fan sends into heat accumulation type radiant tube Mouthful, net cracking gas another part sends into reburner, in described reburner, methane and many carbon hydrocarbon in cracking gas through combustion gas air-introduced machine It is converted into carbon monoxide and Hydrogen synthesis gas;F. described synthesis gas enters in fuel cartridge and stores.
According to embodiment of the present utility model, in described step a, described particulate coal is from the charging aperture on described reactor top It is added in described reactor, and is broken up by the described heat accumulation type radiant tube in described reactor, pyrolysis char is from described reaction The semicoke outlet of device bottom is discharged;In described step a, described particulate coal is by the described heat accumulating type spoke in described reactor pyrolysis chamber Penetrate pipe and be heated to 500-600 DEG C, in described step b, described pyrolysis oil gas is by the described heat accumulating type in described reactor cracking room Radial canal is heated to 650-900 DEG C.
According to embodiment of the present utility model, the granularity of described particulate coal is below 10mm.
The beneficial effects of the utility model are:
1)Take heat accumulation type radiant tube moving bed process heating 10mm particles below and powder coal, uniformity of temperature profile, Heats are good, and response system structure is simple, easy to operate.
2)Reactor is divided into pyrolysis chamber and cracking room, the oil gas that pyrolysis chamber produces, and can carry out deep pyrolytic in cracking room, greatly The tar molecules of molecule are cracked into the gaseous hydrocarbons of small molecule, it is to avoid the problem of pyrolysis oil dust-laden, and combustion gas incendivity generates electricity, very The clean and effective just achieving Fossil fuel utilizes.
3)Two kinds of operations can be carried out in one body of heater, unite two into one, save construction cost and floor space.
4)Cracking gas enters in reburner, can be carbon monoxide and hydrogen by methane and minority many carbon gaseous hydrocarbons, close Become multiple product.
Brief description
Fig. 1 is this utility model pyrolysis of coal and cracking production of synthetic gas system construction drawing.
Fig. 2 is this utility model pyrolysis of coal and the structure of reactor figure of cracking production of synthetic gas system.
Fig. 3 is the front view of the heat-insulated brick wall in this utility model reactor.
Wherein, 1. loading hopper;2. riser exsiccator;3. thermal storage type moving bed reactor;310th, cracking gas outlet;311、 Exhanst gas outlet;320th, charging aperture;321st, air intake;322nd, fuel gas inlet;330th, semicoke outlet;340th, cracking room;350th, heat Solution room;360th, communication member;370th, heat-insulated brick wall;380th, heat accumulation type radiant tube;4. cyclone separator is dried;5. it is pyrolyzed hopper; 6. tail gas air-introduced machine;7. exhaust gas cleaner;8. chimney;9. rotary feeder;10. spray column;11. combustion gas air-introduced machines;12. combustions Pneumatic transmission blower fan;13. reburners;14. conveying worms;15. fuel cartridges.
Specific embodiment
In order that those skilled in the art more fully understand the technical solution of the utility model, with reference to specific embodiment The utility model is described in further detail.The embodiments described below is exemplary, is only used for explaining that this practicality is new Type, and it is not intended that to restriction of the present utility model.Unreceipted particular technique or condition in embodiment, according in the art The technology described by document or condition or carry out according to product description.
According to one side of the present utility model, this utility model provides a kind of pyrolysis of coal and cracking production of synthetic gas system System, Fig. 1 is this pyrolysis of coal and the structure chart of cracking production of synthetic gas system, as shown in figure 1, pyrolysis of coal and cracking production of synthetic gas system Including:Pyrolysis hopper 5;First feed arrangement 9, described first feed arrangement 9 is connected with described pyrolysis hopper 5;Pyrolysis and cracking Reactor 3, including:Charging aperture 320, pyrolysis chamber 350, cracking room 340, cracking gas outlet 310, heat accumulation type radiant tube 380, heat-insulated Brick wall 370 and communication member 360, wherein, described charging aperture is arranged on the roof of described pyrolysis chamber, described cracking gas outlet Be arranged on the side wall of described cracking room, described heat-insulated brick wall vertically through in reactor, by the inner space of reactor It is separated into pyrolysis chamber and cracking room, described communication member is arranged on described heat-insulated brick wall, and pyrolysis chamber is connected with cracking room, excellent Choosing, described communication member is arranged on the bottom of heat-insulated brick wall, the oil gas that pyrolysis chamber is produced, and by communication member, is passed into Cracking room;Spray column 10, described spray column is connected with the outlet of described cracking gas;Reburner 13, described reburner and described spray Tower connects;Fuel cartridge 15, described fuel cartridge is connected with described reburner.
Inventor finds, simple according to the synthesis gas system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good.Reactor is divided into pyrolysis chamber and cracking room, the oil gas that pyrolysis chamber produces, and can enter cracking room and carry out Deep pyrolytic, the tar molecules of macromole is cracked into the gaseous hydrocarbons of small molecule, and this reactor can produce substantial amounts of cracking gas, Thus avoiding the problem producing pyrolysis oil dust-laden, combustion gas incendivity generates electricity, and is truly realized the clean and effective profit of Fossil fuel With.Additionally, two kinds of operations can be carried out in a body of heater, unite two into one, save construction cost and floor space, and, this reaction Device employs heat accumulation type radiant tube heating technique without gas, the heating of solid heat carrier, improve reactor the thermal efficiency while letter Change system process.And, cracking gas enters in reburner, can by methane and minority many carbon gaseous hydrocarbons be carbon monoxide and Hydrogen, synthesizes multiple product, such as methanol, ethylene glycol, acetate products etc..
According to specific embodiment of the utility model it is adaptable to the particle diameter of the coal of this synthesis gas system process is not especially limited System, can also be able to be small-particle coal for lumped coal, in some preferred embodiments of the present utility model, this synthesis gas system is adopted With particle diameter 10mm particles below coal, thus, it is possible to make full use of little particle pyrolysis material, resource utilization is high, and can solve the problem that Bulk deposition pollutes the problem of environment.
According to specific embodiment of the utility model it is adaptable to the type of furnace of the described reactor 3 of this synthesis gas system is not subject to Especially restriction, can be thermal storage type moving bed pyrolysis and cracking reactor 3 can also be other types, such as non-heat accumulating type or non-shifting Dynamic formula etc., as long as pyrolysis chamber and cracking room can be divided into by the integration of heat-insulated brick wall.
According to specific embodiment of the utility model, Fig. 2 is the pyrolysis of this pyrolysis of coal and cracking production of synthetic gas system and splits Solution reactor 3 structure chart, as shown in Fig. 2 described heat-insulated brick wall is arranged in reactor it is preferred that to be located at reactor laterally wide At the 2/3 of degree, the thickness of heat-insulated brick wall is 5-15cm, heat-insulated brick wall vertically through in reactor, by the inside of reactor Space is separated into pyrolysis chamber and cracking room, and this structure makes to be provided with pyrolysis chamber and cracking room in a body of heater, and is produced from pyrolysis chamber Raw oil gas, can enter cracking room and carry out deep pyrolytic, the tar molecules of macromole are cracked into the gaseous hydrocarbons of small molecule, Produce substantial amounts of cracking gas, thus avoiding the problem producing pyrolysis oil dust-laden.And, two kinds of works can be carried out in a body of heater Industry, unites two into one, and saves construction cost and floor space.
According to specific embodiment of the utility model, the concrete species of described communication member 360 is not particularly limited, as long as Pyrolysis chamber can be connected with cracking room, thus the oil gas that pyrolysis chamber is produced is passed into cracking room.In this utility model Some embodiments in, when Fig. 3 is in terms of the from left to right of reactor, the front view of heat-insulated brick wall, as shown in figure 3, communication member Can be for being arranged on the pore area in the multiple holes of inclusion on heat-insulated brick wall, under preferable case, the height of described pore area is 3-15cm, institute State a diameter of 1-3cm in hole.Communication member can also be on heat-insulated brick wall longitudinal length, positioned at the opening of lower position, preferably In the case of, the height of described opening is 3-15cm.
According to specific embodiment of the utility model, as shown in figure 1, described charging aperture is arranged on the roof on pyrolysis chamber top On, pyrolysis hopper is connected with described charging aperture by the first feed arrangement;The concrete species of the first feed arrangement is not especially limited System, as long as the pyrolysis material in pyrolysis hopper can be effectively delivered in reactor.In some realities of the present utility model Apply in example, the first feed arrangement 9 can be rotary feeder or conveying worm.Automatic to pyrolysis material thereby, it is possible to realize Change conveying, conveying capacity is controlled, and device structure is simple, easy to operate.
According to specific embodiment of the utility model, as shown in figure 1, described reactor further comprises semicoke outlet 330, described semicoke outlet is arranged on the bottom of described pyrolysis chamber, and described semicoke outlet is connected with described semicoke conveyer device 14. Thus, it is possible to the semicoke obtaining in reactor be conveyed using semicoke conveyer device.The concrete kind of semicoke conveyer device 14 Class is not particularly limited, including but not limited to star or conveying worm.Thereby, it is possible to realize the Automatic Conveying to semicoke, And conveying capacity is controlled, device structure is simple, easy to operate.
According to specific embodiment of the utility model, as shown in Fig. 2 described inside reactor has multilamellar along described reactor Short transverse be arranged in heat accumulation type radiant tube within described pyrolysis chamber and described cracking room, every layer of heat accumulation type radiant tube is permissible Heat accumulation type radiant tube including multiple parallel to each other and horizontally spaced distribution.According to embodiment of the present utility model, institute State pyrolysis chamber and cracking interior and distributed at least one described heat accumulation type radiant tube respectively it is preferred that described at least one accumulation of heat Formula radial canal is uniformly distributed.Heat accumulation type radiant tube can heat effective for the oil gas indoor to pyrolysis material and cracking, makes It is pyrolyzed and cracking reaction, specifically, can be passed through combustible gas and air into heat accumulation type radiant tube, so that combustible gas is burnt Realize the heating function to pyrolysis material.This equipment adopts heat accumulation type radiant tube heating technique, without gas, solid heat carrier heating, heat Vent one's spleen and will not be diluted, calorific value is high, and reactor temperature is evenly distributed, surface temperature difference is little, and exhaust gas temperature is low, the thermal efficiency is high, System process is simplified, response system structure is simple, easy to operate while the thermal efficiency that improve reactor.
In described reactor, pyrolysis material moves from top to bottom, and in described reactor, the heat accumulation type radiant tube of setting is permissible Pyrolysis material is broken up makes it be uniformly distributed, and pyrolysis material stops 1-50 minute in the reactor from top to bottom, and is heated to 500-600 ℃.According to embodiment of the present utility model, the shape of heat accumulation type radiant tube is not particularly limited, in some realities of the present utility model Apply in example, can be cylinder, thus be conducive to being pyrolyzed breaing up of material, realize uniform point in the reactor of mixed pyrolysis material Dissipate.The level interval of radial canal is 200-500mm, and vertical interval is 200-700mm, and the radial canal number of plies is 10-25 layer, reactor Width is 2-6m, and height for reactor is 3-20m.In addition, heat accumulation type radiant tube can be the unidirectional heat accumulating type radiation being evenly arranged Pipe, the temperature of tube wall can control in 450-1000 DEG C of scope by gas control valve, and heat accumulation type radiant tube can be taken periodically The combustion system of commutation, so that the surface temperature difference of single heat accumulation type radiant tube only has 30 DEG C about, does not have area of localized hyperthermia, by This, be conducive to improving the thermal efficiency.
According to specific embodiment of the utility model, described reactor be provided with fuel gas inlet 322, air intake 321 and Exhanst gas outlet 311, wherein, fuel gas inlet and exhanst gas outlet are connected with heat accumulation type radiant tube respectively, are respectively used to be passed through combustible gas With discharge flue gas, air intake is connected with source of the gas and heat accumulation type radiant tube respectively, and the air for producing source of the gas is passed through accumulation of heat In formula radial canal.
According to embodiment of the present utility model, as shown in figure 1, this synthesis gas system may further include:Loading hopper 1; The second feed arrangement being connected with loading hopper;It is connected with the exhanst gas outlet 311 of the second feed arrangement and heat accumulation type radiant tube respectively Drying device 2;The gas-solid separating device 4 being connected with drying device and pyrolysis hopper 5 respectively;It is connected with gas-solid separating device Exhaust gas cleaner 7.Thus, it is possible to the pyrolysis material in loading hopper be added in drying device by the second feed arrangement, dry In dry device, pyrolysis material is being dried in the presence of the flue gas (temperature is about 150-250 DEG C) of heat accumulation type radiant tube, so The mixture of dried pyrolysis material and flue gas enters gas-solid separating device afterwards, and (temperature is about 70-130 to separate the flue gas obtaining DEG C) enter in exhaust gas cleaner and carry out purified treatment, to realize qualified discharge, separate the pyrolysis material obtaining and be delivered to pyrolysis material In bucket, it is used for carrying out pyrolytic reaction.
According to embodiment of the present utility model, the concrete species of the second pay-off is not particularly limited, as long as being applied to Pyrolysis material in loading hopper is delivered in drying device.In some embodiments of the present utility model, the second feeding dress Putting can be star feeder or feed screw.Thereby, it is possible to realize the Automatic Conveying to pyrolysis material, and conveying capacity can Control, device structure is simple, easy to operate.
According to embodiment of the present utility model, the concrete species of drying device 2 is not particularly limited, if be capable of right The drying of pyrolysis material and the function of preheating.In some embodiments of the present utility model, drying device 2 can be riser Exsiccator 2, thus, pyrolysis material is dried in the presence of flue gas and is lifted, the mixture of dried pyrolysis material and flue gas Discharge riser exsiccator, be conducive to subsequent step to carry out.In drying device, while pyrolysis material is dried, also Achieve the function of preheating, be conducive to improving speed and the efficiency of follow-up pyrolytic reaction, and using heat accumulation type radiant tube discharge Flue gas is dried to pyrolysis material and preheats the comprehensive utilization it is achieved that heat energy, effectively reduces energy consumption, has reached energy-conserving and environment-protective Purpose.
According to embodiment of the present utility model, the concrete species of gas-solid separating device 4 is not particularly limited, as long as can be by Pyrolysis material separates with flue gas.In some embodiments of the present utility model, gas-solid separating device 4 can divide for whirlwind is dried From device 4, thus, it is possible to quickly and efficiently pyrolysis material and flue gas be carried out separating, and good separating effect, simple to operation, become This is relatively low.
According to embodiment of the present utility model, can also be further between gas-solid separating device 4 and exhaust gas cleaner 7 It is provided with tail gas air-introduced machine 6, tail gas air-introduced machine quickly and efficiently can will separate the flue gas conveying obtaining in gas-solid separating device To exhaust gas cleaner, be conducive to improving work efficiency.
According to embodiment of the present utility model, this pyrolysis plant is also provided with the chimney being connected with exhaust gas cleaner 8, the flue gas after exhaust gas cleaner purified treatment empties through chimney, thus, is conducive to environmental protection, reduces pollution.
According to embodiment of the present utility model, as shown in figure 1, this synthesis gas system further includes combustion gas pressure fan 12, Wherein, one end of described combustion gas pressure fan is connected with the outlet of described spray column, the combustion of the other end and described heat accumulation type radiant tube Gas entrance 322 connects.Thus, the fuel gas inlet of the radial canal of pyrolysis reactor sent into by a part of combustible gas through combustion gas pressure fan 322.
According to embodiment of the present utility model, as shown in figure 1, this synthesis gas system further includes combustion gas air-introduced machine 11, Wherein, described combustion gas air-introduced machine is arranged between described spray column and described reburner.The outlet of spray column and combustion gas air-introduced machine Entrance connects, and the outlet of combustion gas air-introduced machine is connected with reburner entrance, and conversion outlet of still is connected with fuel cartridge entrance.
In other side of the present utility model, this utility model provides one kind and carries out coal using foregoing system Pyrolysis and the method for cracking production of synthetic gas.According to embodiment of the present utility model, the method may comprise steps of:
A. particulate coal is added in reactor by charging aperture, completes to be pyrolyzed in the pyrolysis chamber of described reactor Journey.Wherein, described particulate coal is added to reactor from the charging aperture on reactor top, and is radiated by the heat accumulating type in reactor Pipe is broken up, and pyrolysis char is discharged from the semicoke outlet of reactor bottom, and through semicoke conveyer device(Preferably conveying worm)Row Go out.
According to specific embodiment of the utility model it is adaptable to the particle diameter of the coal of this synthesis gas system process is not especially limited System, can also be able to be small-particle coal for lumped coal, in some preferred embodiments of the present utility model, this synthesis gas system is adopted With particle diameter 10mm particles below coal, thus, it is possible to make full use of little particle pyrolysis material, resource utilization is high, and can solve the problem that Bulk deposition pollutes the problem of environment.
According to embodiment of the present utility model, in the pyrolysis chamber of reactor, the heat accumulation type radiant tube of setting can be by particulate coal Break up and so that it is uniformly distributed, particulate coal stops 1-50 minute in the reactor from top to bottom, and particulate coal is by reactor pyrolysis chamber Heat accumulation type radiant tube be heated to 500-600 DEG C, specifically, can by gas valve control heat accumulation type radiant tube tube wall temperature For 500-700 DEG C, particulate coal is heated to rapidly 500-600 DEG C in the reactor, completes pyrolytic process.
B. it is pyrolyzed the oil gas of generation, by the communication member of setting on the heat-insulated brick wall of described reactor, enter into described anti- Answer the cracking room of device.
According to embodiment of the present utility model, heat-insulated brick wall is arranged in reactor it is preferred that to be located at reactor laterally wide At the 2/3 of degree, the thickness of heat-insulated brick wall is 5-15cm, heat-insulated brick wall vertically through in reactor, by the inside of reactor Space is separated into pyrolysis chamber and cracking room, and this structure makes to be provided with pyrolysis chamber and cracking room in a body of heater, and is produced from pyrolysis chamber Raw oil gas, can enter cracking room and carry out deep pyrolytic, the tar molecules of macromole are cracked into the gaseous hydrocarbons of small molecule. Thus, two kinds of operations can be carried out in a body of heater, unite two into one, save construction cost and floor space.According to this utility model Embodiment, communication member can be the inclusion pore area in multiple holes being arranged on heat-insulated brick wall or heat-insulated brick wall is indulged To in length, positioned at the opening of lower position.Specifically, the oil gas that pyrolysis produces, by the hole of reactor heat-insulated brick wall bottom Band or opening, enter into cracking room.
C. the oil gas being pyrolyzed generation completes thermal cracking processes in described cracking interior, produces cracking gas.
According to embodiment of the present utility model, described cracking interior distributed at least one described heat accumulation type radiant tube, excellent Choosing, described at least one heat accumulation type radiant tube is uniformly distributed.Heat accumulation type radiant tube can be effective for the oil indoor to cracking Gas is heated so as to be carried out cracking reaction.Specifically, pyrolysis oil gas is heated by the heat accumulation type radiant tube in reactor cracking room To 650-900 DEG C, specifically, can be 650-900 DEG C by the temperature that gas valve controls heat accumulation type radiant tube tube wall, particulate coal It is heated to rapidly 650-900 DEG C in the reactor, completes thermal cracking processes, thus, the tar molecules of macromole are cracked into little The gaseous hydrocarbons of molecule, produces substantial amounts of cracking gas, it is to avoid the problem of pyrolysis oil dust-laden, is truly realized the clear of Fossil fuel Clean efficient utilization.
D. described cracking gas is entered in spray column by cracking gas outlet, carries out purified treatment to described cracking gas.
E. a purified net cracking gas part sends into the fuel gas inlet of heat accumulation type radiant tube, net cracking through combustion gas pressure fan Gas another part sends into reburner through combustion gas air-introduced machine, and in described reburner, in cracking gas, methane and many carbon hydrocarbon are converted into one Carbonoxide and Hydrogen synthesis gas.
F. described synthesis gas enters in fuel cartridge and stores.
Embodiment one:
(1)The particulate coal being crushed to granularity≤10mm enters riser exsiccator 2 by loading hopper 1, is dried in riser In device, the 150-250 DEG C of flue gas using the radial canal smoke outlet from thermal storage type moving bed reactor 3 is done to coal Dry and lifting, coal enter cyclone separator 4 is dried, the coal dust separating enter into pyrolysis hopper 5 in, 70-130 DEG C about Flue gas is then admitted to exhaust gas cleaner 7 through tail gas air-introduced machine 6, reaches the flue gas after discharge standard and discharges through chimney 8.
(2)Coal enters thermal storage type moving bed reactor 3, moving-burden bed reactor 3 through rotary feeder 9 in pyrolysis hopper 5 Pyrolysis chamber and cracking room are divided into by grid brick wall shape.
(3)It has been evenly arranged unidirectional heat accumulation type radiant tube, tube wall temperature is controlled 500 using gas control valve in pyrolysis chamber ~700 DEG C of scopes, material stops 1-50 minute in the reactor from top to bottom, and is heated to 500~600 DEG C, completes to be pyrolyzed Journey.
(4)The oil gas that pyrolysis produces, by the opening of reactor lower part grid brick wall, enters into cracking room, in cracking room It has been evenly arranged unidirectional heat accumulation type radiant tube, tube wall temperature is controlled in 650~900 DEG C of scopes, pyrolysis oil using gas control valve Gas is heated to 650-900 DEG C in cracking interior, completes thermal cracking processes, the tar molecules of macromole are cracked into the gas of small molecule State hydro carbons, produces substantial amounts of cracking gas, it is to avoid the problem of pyrolysis oil dust-laden, and the clean and effective being truly realized coal utilizes.
(5)Cracking gas passes through reactor outlet, enters in spray column 10 and washs, and the net cracking gas after washing is blown through combustion gas Reburner 13 sent into by machine 11, and in reburner 13 cracking gas, methane and minority many carbon hydrocarbon are converted into carbon monoxide and hydrogen synthesis Gas, synthesis gas enters in fuel cartridge 15 and stores, and can produce the multiple products such as methanol, ethylene glycol, acetic acid.
(6)A part of combustible gas sends into the heat accumulation type radiant tube fuel gas inlet of reactor 3 through combustion gas pressure fan 12.
(7)The semicoke that pyrolysis of coal produces is discharged by conveying worm 14, and semicoke can be used for combustion power generation or makes moulded coal.
Inventor finds, simple according to the synthesis gas system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good.Reactor is divided into pyrolysis chamber and cracking room, the oil gas that pyrolysis chamber produces, and can enter cracking room and carry out Deep pyrolytic, the tar molecules of macromole is cracked into the gaseous hydrocarbons of small molecule, and this reactor can produce substantial amounts of cracking gas, Thus avoiding the problem producing pyrolysis oil dust-laden, combustion gas incendivity generates electricity, and is truly realized the clean and effective profit of Fossil fuel With.Additionally, two kinds of operations can be carried out in a body of heater, unite two into one, save construction cost and floor space, and, this reaction Device employs heat accumulation type radiant tube heating technique without gas, the heating of solid heat carrier, improve reactor the thermal efficiency while letter Change system process.And, cracking gas enters in reburner, can by methane and minority many carbon gaseous hydrocarbons be carbon monoxide and Hydrogen, synthesizes multiple product, such as methanol, ethylene glycol, acetate products etc..
Using this utility model pyrolysis of coal and cracking production of synthetic gas system, brown coal are processed, the basic data of raw material is shown in Table 1.
Table 1:Brown coal basic data
Process brown coal using this system, the factor of created gase obtaining is up to 23%, far above the product obtained by the pyrolysis of laboratory aluminum rice steamer Gas rate, pyrolytic tar almost all is cracked into gaseous products, and factor of created gase is high.Synthesis gas purity reaches more than 95%.
It is to be understood that term " first ", " second " are only used for describing purpose in description of the present utility model, and It is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define The feature of " first ", " second " can be expressed or implicitly include one or more this feature.
In this utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " Gu Fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral;Can be It is mechanically connected or electrically connect;Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis Concrete condition understands concrete meaning in this utility model for the above-mentioned term.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score Can be the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, first is special Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term State that be not necessarily referring to is identical embodiment or example.And, the specific features of description, structure, material or feature can be Combine in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area Technical staff the feature of the different embodiments described in this specification or example and different embodiment or example can be entered Row combines and combines.
Although of the present utility model embodiment has been shown and described above it is to be understood that above-described embodiment is Exemplary it is impossible to be interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model Interior above-described embodiment can be changed, change, replacing and modification, simultaneously for one of ordinary skill in the art, foundation The thought of the application, all will change in specific embodiments and applications.

Claims (7)

1. a kind of pyrolysis of coal and cracking production of synthetic gas system are it is characterised in that include:
Pyrolysis hopper;
First feed arrangement, described first feed arrangement is connected with described pyrolysis hopper;
Pyrolysis and cracking reactor, including:Charging aperture, pyrolysis chamber, cracking room and cracking gas outlet, described charging aperture is arranged on institute State on the roof of pyrolysis chamber, described cracking gas outlet is arranged on the side wall of described cracking room;And:
Heat accumulation type radiant tube, described heat accumulation type radiant tube along described reactor short transverse multi-tier arrangement in described pyrolysis chamber and Inside described cracking room, every layer has the many described heat accumulation type radiant tubes arranged in the horizontal direction;
Heat-insulated brick wall, described heat-insulated brick wall is arranged at the 2/3 of described reactor transverse width, vertically through in described reaction In device, the inner space of described reactor is separated into described pyrolysis chamber and described cracking room;
Communication member, described communication member is arranged on the bottom of described heat-insulated brick wall, for the oil gas producing described pyrolysis chamber, By described communication member, it is passed into described cracking room;
Spray column, described spray column is connected with the outlet of described cracking gas;
Reburner, described reburner is connected with described spray column;
Fuel cartridge, described fuel cartridge is connected with described reburner.
2. system according to claim 1 is it is characterised in that described communication member is to be arranged on described heat-insulated brick wall Pore area including multiple holes;Or described communication member is on described heat-insulated brick wall longitudinal length, positioned at the opening of lower position.
3. system according to claim 2 it is characterised in that described heat-insulated brick wall thickness be 5-15cm, described pore area Height be 3-15cm, a diameter of 1-3cm in described hole, the height of described opening is 3-15cm.
4. the system according to any one of claim 1-3 is it is characterised in that further include combustion gas pressure fan, wherein, One end of described combustion gas pressure fan is connected with the outlet of described spray column, the fuel gas inlet of the other end and described heat accumulation type radiant tube Connect.
5. the system according to any one of claim 1-3 is it is characterised in that further include combustion gas air-introduced machine, wherein, Described combustion gas air-introduced machine is arranged between described spray column and described reburner.
6. the system according to any one of claim 1-3 is it is characterised in that also include loading hopper;Second feed arrangement, It is connected with described loading hopper;Drying device, its respectively with described second feed arrangement and described heat accumulation type radiant tube on cigarette Gas outlet connects;Gas-solid separating device, it is connected with described drying device and described pyrolysis hopper respectively;Tail gas clean-up fills Put, it is connected with described gas-solid separating device.
7. the system according to any one of claim 1-3 is it is characterised in that described pyrolysis hopper enters by described first Material device is connected with described charging aperture, further includes that semicoke exports, and described semicoke outlet is arranged on the bottom of described pyrolysis chamber, Described semicoke outlet is connected with described semicoke conveyer device.
CN201620456535.4U 2016-05-19 2016-05-19 Syngas system is produced in pyrolysis of coal and schizolysis Withdrawn - After Issue CN205974374U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105950196A (en) * 2016-05-19 2016-09-21 北京神雾环境能源科技集团股份有限公司 System using coal pyrolysis and splitting to produce synthesized gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105950196A (en) * 2016-05-19 2016-09-21 北京神雾环境能源科技集团股份有限公司 System using coal pyrolysis and splitting to produce synthesized gas
CN105950196B (en) * 2016-05-19 2019-02-01 神雾科技集团股份有限公司 A kind of pyrolysis of coal and cracking production of synthetic gas system

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