CN205974386U - Oil shale pyrolysis and cracking system - Google Patents

Oil shale pyrolysis and cracking system Download PDF

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Publication number
CN205974386U
CN205974386U CN201620456517.6U CN201620456517U CN205974386U CN 205974386 U CN205974386 U CN 205974386U CN 201620456517 U CN201620456517 U CN 201620456517U CN 205974386 U CN205974386 U CN 205974386U
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China
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pyrolysis
cracking
gas
heat
reactor
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CN201620456517.6U
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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 belongs to the technical field of the oil shale pyrolysis, concretely relates to granule oil shale pyrolysis and cracking system based on the regenerative radiant tube heating, this system includes: parts such as pyrolysis hopper, a feed arrangement, pyrolysis and cracking reactor, spray column and gas jar, wherein, pyrolysis and cracking reactor be including feed inlet, pyrolysis chamber, splitting chamber and cracked gas outlet, and: regenerative radiant tube, thermal -insulated brick wall and communication member. This reaction system simple structure, convenient operation, the distribution of temperature is even, heats effectually, and oil gas that the pyrolysis chamber produced can carry out deep cracking at splitting chamber, and the burnt oil molecules schizolysis of macromolecule be the gaseous hydrocarbons of micro molecule, and this reaction system can produce a large amount of cracking gas products, has avoided the problem of pyrolysis oil dust -laden, has really realized fossil fuel's clean high -efficient utilization.

Description

A kind of oil shale pyrolysis and cracking system
Technical field
This utility model belong to oil shale pyrolysis technical field and in particular to a kind of based on heat accumulation type radiant tube heating Grain oil shale pyrolysis and cracking system, are used for producing cleaning combustible gas.
Background technology
World petroleum resource is in short supply at present, increasingly reduces, and China is more so it is necessary to rely on substantial amounts of imported crude oil, this relation To the national economic development and national energy security problem.However, China has very abundant oil shale resources, current China Pyrolysis shale oil yield ranks first in the world, and has the trend increasing year by year.The existing oil shale retorting type of furnace is mainly comforted Along stove, three river gas combustion side stoves, Petro Se Kesi (Petrosix) stove of Brazil, the Ge Luote of Ai Shaniya(Galoter) ATP stove of stove and Australia etc..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 powdery oil shale, contain a large amount of dirt in pyrolysis oil, cause pyrolysis oil to be difficult to effectively utilizes, The problems such as pyrolysis oil value is high.Therefore, how to design all simple system of a kind of high-effective dust-removing, system structure and technological process Become the problem of this area urgent need to resolve.
Utility model content
This utility model is directed to the deficiencies in the prior art, design and develop a kind of pyrolysis of oil shale heat accumulating type down-flow fluidized bed using ECT and Cracking reaction 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 carries 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, the clean and effective being truly realized oil shale utilizes.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is:
In view of this, this utility model provides a kind of oil shale pyrolysis and cracking system.According to reality of the present utility model Apply example, this system includes: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 described pyrolysis On the roof of room, described cracking gas outlet is arranged on the side wall of described cracking room, and:Heat accumulation type radiant tube, described accumulation of heat Formula radial canal along described pyrolysis reactor short transverse multi-tier arrangement inside described pyrolysis chamber and described cracking room, every layer tool There are the many described heat accumulation type radiant tubes arranged in the horizontal direction;Heat-insulated brick wall, it is horizontal that described heat-insulated brick wall is arranged on reactor At the 2/3 of width, vertically through in described reactor, by the inner space of described reactor be 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 producing pyrolysis chamber Gas, by described communication member, is passed into described cracking room;Spray column, described spray column is connected with the outlet of described cracking gas;Combustion Gas tank, described fuel cartridge is connected with described spray column.
Inventor finds, simple according to this response system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good, the oil gas that pyrolysis chamber produces, and can carry out deep pyrolytic, the tar molecules cracking of macromole in cracking room For the gaseous hydrocarbons of small molecule, this response system can produce substantial amounts of cracking gas product, it is to avoid the problem of pyrolysis oil dust-laden, very The clean and effective just achieving Fossil fuel utilizes.Additionally, two kinds of operations can be carried out in a body of heater, unite two into one, shale profit High with rate, save construction cost and floor space.And this reactor employs heat accumulation type radiant tube heating technique without gas, solid Heat carrier heats, and simplifies system process while the thermal efficiency that improve reactor.
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.
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.
According to embodiment of the present utility model, described communication member is on described heat-insulated brick wall longitudinal length, positioned at bottom The opening of position is it is preferred that the height of described opening is 3-15cm.
According to embodiment of the present utility model, this system may further include:Gasification furnace, described gasification furnace one end and institute The fuel gas inlet stating heat accumulation type radiant tube is connected, and the other end is connected with described semicoke conveyer device.
According to embodiment of the present utility model, this system can further include:Loading hopper;Second feed arrangement, its It is connected with described loading hopper;Drying device, its respectively with described second feed arrangement and described heat accumulation type radiant tube on flue gas Outlet connects;Gas-solid separating device, it is connected with described drying device and described pyrolysis hopper respectively;Exhaust gas cleaner, It is connected with described gas-solid separating device.
According to embodiment of the present utility model, described pyrolysis hopper is by described first feed arrangement and described charging aperture phase Even;Further comprise semicoke outlet, it is arranged on the bottom of described pyrolysis chamber, described semicoke outlet and described semicoke conveying dress Put connection.
In other side of the present utility model, this utility model provides one kind and carries out heat using foregoing system Solution and the method for cracking.According to embodiment of the present utility model, the method comprises the following steps:A. Oil Shale Particles are passed through institute State the first feed arrangement and described charging aperture is added in described reactor, in the described pyrolysis chamber of described reactor, complete heat Solution preocess;B. it is pyrolyzed the described communication member by setting on the heat-insulated brick wall of described reactor for the oil gas of generation, enter into described The described cracking room of reactor;C. the oil gas being pyrolyzed generation enters into described cracking interior, completes cracking process, produces cracking Gas;D. described cracking gas is entered in described spray column by described cracking gas outlet, carries out purified treatment to described cracking gas; E. the net cracking gas through purifying enters in described fuel cartridge and stores.
According to embodiment of the present utility model, in described step a, described Oil Shale Particles are from the institute on described reactor top State charging aperture to be added in described reactor, and broken up by the described heat accumulation type radiant tube in described reactor, pyrolysis char from The semicoke outlet of described reactor bottom is discharged;In described step a, described Oil Shale Particles are by described reactor pyrolysis chamber Described heat accumulation type radiant tube is heated to 500-600 DEG C, and in described step b, described pyrolysis oil gas is by described reactor cracking room Described heat accumulation type radiant tube be heated to 650-900 DEG C.
According to embodiment of the present utility model, the granularity of described Oil Shale Particles is below 20mm.
This utility model at least has the advantages that:
1)System response device is divided into pyrolysis chamber and cracking room, the oil gas that pyrolysis chamber produces, and can carry out depth in cracking room and split Solution, the tar molecules of macromole are cracked into the gaseous hydrocarbons of small molecule, and this response system can produce substantial amounts of cracking gas product, keeps away Exempt from the problem of pyrolysis oil dust-laden, the clean and effective being truly realized Fossil fuel utilizes;
2)System takes heat accumulation type radiant tube moving bed process, and response system structure is simple, and easy to operate, Temperature Distribution is equal Even, heats are good;
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)20mm particles below oil shale can be processed, shale utilization rate is high, be suitable to promote.
Brief description
Fig. 1 is the structure chart of this utility model pyrolysis and cracking system.
Fig. 2 is the structure of reactor figure of this utility model pyrolysis and cracking system.
Fig. 3 is the front view of the heat-insulated brick wall of this utility model.
Wherein, 1, loading hopper;2nd, pneumatic conveyer dryer;3rd, thermal storage type moving bed reactor;4th, cyclone separator is dried;5th, heat Solution hopper;6th, tail gas air-introduced machine;7th, exhaust gas cleaner;8th, chimney;9th, feeding screw;10th, spray column;11st, combustion gas air inducing Machine;12nd, fuel cartridge;13rd, gasification furnace;14th, conveying worm;15th, heat accumulation type radiant tube;16th, heat-insulated brick wall;17th, communication member; 18th, pyrolysis chamber;19th, cracking room;20th, cracking gas outlet;21st, charging aperture;22nd, fuel gas inlet;23rd, exhanst gas outlet;24th, air enters Mouthful;25th, semicoke outlet.
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.
This utility model provides a kind of oil shale pyrolysis and cracking system.According to embodiment of the present utility model, reference Shown in Fig. 1, this system includes:Pyrolysis hopper 5;First feed arrangement 9, described first feed arrangement is with described pyrolysis hopper 5 even Connect;Pyrolysis and cracking reactor 3, it includes:Charging aperture 21, pyrolysis chamber 18, cracking room 19, cracking gas outlet 20, heat accumulating type spoke Penetrate pipe 15, heat-insulated brick wall 16 and communication member 17, wherein, described charging aperture is arranged on the roof of described pyrolysis chamber, described split Outlet of venting one's spleen is arranged on the side wall of described cracking room, and described heat-insulated brick wall, will be described vertically through in described reactor The inner space of reactor is separated into described pyrolysis chamber and described cracking room, and described communication member is arranged on described heat-insulated brick wall Bottom, for the oil gas producing pyrolysis chamber, by described communication member, is passed into described cracking room;Spray column 10, described spray Drench tower to be connected with the outlet of described cracking gas;Fuel cartridge 12, described fuel cartridge is connected with described spray column.
Inventor finds, simple according to this response system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good, the oil gas that pyrolysis chamber produces, and can carry out deep pyrolytic, the tar molecules cracking of macromole in cracking room For the gaseous hydrocarbons of small molecule, this response system can produce substantial amounts of cracking gas product, it is to avoid the problem of pyrolysis oil dust-laden, very The clean and effective just achieving Fossil fuel utilizes.Additionally, two kinds of operations can be carried out in a body of heater, unite two into one, shale profit High with rate, save construction cost and floor space.And this reactor employs heat accumulation type radiant tube heating technique without gas, solid Heat carrier heats, and simplifies system process while the thermal efficiency that improve reactor.
According to specific embodiment of the utility model it is adaptable to the particle diameter of the oil shale of this reactor is not particularly limited, In some preferred embodiments of the present utility model, the oil shale that this reactor adopts is particle diameter 20mm particles below and powdery Fossil fuel, thus, it is possible to make full use of granule wax shale, resource utilization is high, and can solve the problem that bulk deposition pollution ring The problem in border.
According to specific embodiment of the utility model it is adaptable to the type of furnace of this system is not particularly limited, it can be accumulation of heat Formula moving bed 3 can also be other types, such as non-heat accumulating type or non-moving type etc., as long as can dividing by heat-insulated brick wall integration It is segmented into pyrolysis chamber and cracking room.
According to specific embodiment of the utility model, with reference to shown in Fig. 2, inside reactor has along described pyrolysis reactor Heat accumulation type radiant tube within described pyrolysis chamber and described cracking room for the short transverse multi-tier arrangement, every layer of heat accumulation type radiant tube tool There are many heat accumulation type radiant tubes, and horizontally spaced arrangement.According to embodiment of the present utility model, described pyrolysis chamber and splitting Solution interior distributed at least one described heat accumulation type radiant tube respectively it is preferred that described at least one heat accumulation type radiant tube is uniform Distribution.Heat accumulation type radiant tube can be heated effective for the oil gas indoor to pyrolysis material and cracking so as to carried out pyrolysis and Cracking reaction, specifically, can be passed through combustible gas and air into heat accumulation type radiant tube, so that combustible gas is burnt and realize to pyrolysis material Heating function.This reactor employs heat accumulation type radiant tube heating technique without gas, solid heat carrier heating, and Temperature Distribution is equal Even, heats are good, and response system structure is simple, easy to operate, simplifies system while the thermal efficiency that improve reactor Technique.
In the reactor, oil shale moves from top to bottom, the unidirectional heat accumulating type radiation being evenly arranged of setting in pyrolysis chamber Oil shale can be broken up by pipe makes it be uniformly distributed, and oil shale stops 1-50 minute in the reactor from top to bottom, and is heated to 500-600 DEG C, tube wall temperature is controlled in 500~700 DEG C of scopes using gas control valve, completes pyrolytic process, and pyrolysis produces Oil gas, by the opening of reactor lower part checker brick, enters into cracking room, is provided with the unidirectional accumulation of heat being evenly arranged in cracking room Formula radial canal, and it is heated to 650-900 DEG C, tube wall temperature is controlled in 650~900 DEG C of scopes using gas control valve, completes to split Solution preocess, the tar molecules of macromole are cracked into the gaseous hydrocarbons of small molecule, produce substantial amounts of cracking gas, it is to avoid pyrolysis oil contains The problem of dirt, the clean and effective being truly realized oil shale utilizes.According to embodiment of the present utility model, heat accumulation type radiant tube Shape is not particularly limited, and in some embodiments of the present utility model, can be cylinder, thus be conducive to beating of oil shale Dissipate, realize mixing oil shale in the reactor dispersed.
According to specific embodiment of the utility model, heat-insulated brick wall is arranged in reactor it is preferred that being located at reactor horizontal stroke To at the 2/3 of width, the thickness of heat-insulated brick wall is 5-15cm, heat-insulated brick wall vertically through in reactor, by reactor Inner 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, pyrolysis The oil gas that room produces, can enter cracking room and carry out deep pyrolytic, the tar molecules of macromole are cracked into the gaseous state of small molecule Hydro carbons, produces substantial amounts of cracking gas, thus avoiding the problem producing pyrolysis oil dust-laden.And, two can be carried out in a body of heater Plant operation, unite two into one, save construction cost and floor space.
According to specific embodiment of the utility model, the concrete species of communication member is not particularly limited, as long as can be by Pyrolysis chamber connects with cracking room, thus the oil gas that pyrolysis chamber is produced is passed into cracking room.More of the present utility model In embodiment, 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 Be arranged on the pore area of the inclusion porous on heat-insulated brick wall, under preferable case, the height of described pore area is 3-15cm, described hole straight Footpath is 1-3cm.Communication member can also be on heat-insulated brick wall longitudinal length, positioned at the opening of lower position, under preferable case, institute The height stating opening is 3-15cm.
According to embodiment of the present utility model, this system may further include:Combustion gas with heat accumulation type radiant tube respectively The gasification furnace that entrance is connected with semicoke conveyer device.Thus, it is possible to using semicoke conveyer device, pyrolysis in pyrolysis chamber is produced Semicoke is delivered in gasification furnace, carries out gasification process to semicoke, and to obtain combustible gas and lime-ash, the combustible gas obtaining can be passed through In heat accumulation type radiant tube, it is passed through air in heat accumulation type radiant tube simultaneously, so that combustible gas is burnt and the material in pyrolysis chamber is carried out Heating.Thus, it is possible to sufficiently be utilized to semicoke, do not cause to waste, good economy performance.
According to specific embodiment of the utility model, described reactor is provided with fuel gas inlet 22, air intake 24 and cigarette Gas outlet 23, 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 and row Go out flue gas, air intake is connected with source of the gas and heat accumulation type radiant tube respectively, the air for producing source of the gas is passed through heat accumulating type spoke Penetrate in pipe.
According to specific embodiment of the utility model, this system may further include:Loading hopper 1;It is connected with loading hopper The second feed arrangement 9;It is connected with the exhanst gas outlet 23 on described second feed arrangement and described heat accumulation type radiant tube respectively Drying device 2;The gas-solid separating device 4 being connected with described drying device and described pyrolysis hopper respectively;Divide with described gas-solid The exhaust gas cleaner 7 being connected from device.Thus, it is possible to the oil shale in loading hopper be added by the second feed arrangement dry In dry device, in drying device, oil shale the heat accumulation type radiant tube in pyrolysis chamber flue gas (temperature be about 200~ 250 degrees Celsius) in the presence of be dried, then dried oil shale and flue gas mixture enter gas-solid separating device, Separate the flue gas (temperature is about 70~110 degrees Celsius) obtaining and enter in exhaust gas cleaner and carry out purified treatment, to realize reaching Mark discharge, separates the pyrolysis material obtaining and is delivered in pyrolysis hopper, be 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 Oil shale in loading hopper is delivered in drying device.In some embodiments of the present utility model, the second feeding dress Putting can be feeding screw 9.Thereby, it is possible to realize the Automatic Conveying to oil shale, and conveying capacity is controlled, device structure letter Single, easy to operate.
According to embodiment of the present utility model, the concrete species of drying device is not particularly limited, if be capable of right The drying of oil shale and the function of preheating.In some embodiments of the present utility model, drying device can be done for air-flow Dry device 2, thus, oil shale is dried in the presence of flue gas and is lifted, the mixture row of dried oil shale and flue gas Go out pneumatic conveyer dryer 2, be conducive to subsequent step to carry out.In drying device, while pyrolysis material is dried, also realize The function of preheating, is conducive to improving and adopts in the speed of follow-up pyrolytic reaction and efficiency, and pyrolysis chamber heat accumulation type radiant tube to arrange The flue gas going out is dried to oil shale and preheats the comprehensive utilization it is achieved that heat energy, effectively reduces energy consumption, has reached energy-conservation The purpose of environmental protection.
According to embodiment of the present utility model, the concrete species of gas-solid separating device is not particularly limited, as long as can be by Oil shale separates with flue gas.In some embodiments of the present utility model, gas-solid separating device 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 set further between gas-solid separating device and exhaust gas cleaner It is equipped with tail gas air-introduced machine 6, tail gas air-introduced machine can quickly and efficiently be delivered to separating the flue gas obtaining in gas-solid separating device In 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, this system can also include:Also may be used between spray column 10 and fuel cartridge 12 To be further provided with combustion gas air-introduced machine 11, combustion gas air-introduced machine quickly and efficiently can will pass through what purification obtained in spray column Natural gas transportation is stored to fuel cartridge, and further, the cracking gas obtaining can be further used for preparing LNG or LNP. Inventor finds, can significantly improve the yield of cracking gas using this system, have enough gas to be used for producing liquefied natural gas (LNG) or liquefied petroleum gas (LPG), good in economic efficiency.
According to specific embodiment of the utility model, described pyrolysis hopper is connected with charging aperture by the first feed arrangement; Further comprise semicoke outlet, it is arranged on the bottom of described pyrolysis chamber, described semicoke outlet and described semicoke conveyer device Connect.The concrete species of the first feed arrangement is not particularly limited, as long as can be effectively defeated by the oil shale in pyrolysis hopper Deliver in reactor.In some embodiments of the present utility model, the first feed arrangement can be with feeding screw.Thus, It is capable of the Automatic Conveying to oil shale, conveying capacity is controlled, and device structure is simple, easy to operate.Semicoke conveyer device Concrete species be not particularly limited, including but not limited to star or conveying worm, under preferable case, semicoke conveyer is permissible For conveying worm 14.Thereby, it is possible to realize the Automatic Conveying to semicoke, and conveying capacity is controlled, and device structure is simple, operation Convenient.
In other side of the present utility model, this utility model provides one kind and carries out heat using foregoing system Solution and the method for cracking.According to embodiment of the present utility model, the method may comprise steps of:
A. Oil Shale Particles are passed through described first feed arrangement and be arranged on the charging aperture on the roof of described pyrolysis chamber It is added in reactor, the described pyrolysis chamber of described reactor completes pyrolytic process, pyrolysis char is from reactor bottom Semicoke outlet is discharged, and discharges through semicoke conveyer device.
According to specific embodiment of the utility model it is adaptable to the particle diameter of the oil shale of this reactor is not particularly limited, In some preferred embodiments of the present utility model, the oil shale that this reactor adopts is particle diameter 20mm particles below and powdery Fossil fuel, thus, it is possible to make full use of granule wax shale, resource utilization is high, and can solve the problem that bulk deposition pollution ring The problem in border.
According to specific embodiment of the utility model, the concrete species of the first feed arrangement is not particularly limited, as long as can So that the oil shale in pyrolysis hopper to be effectively delivered in reactor.In some embodiments of the present utility model, the One feed arrangement can be with feeding screw.Thereby, it is possible to realize the Automatic Conveying to oil shale, conveying capacity is controlled, and equipment Structure is simple, easy to operate.
According to specific embodiment of the utility model, described pyrolysis interior distributed at least one described heat accumulating type radiation , it is preferred that described at least one heat accumulation type radiant tube is uniformly distributed, specifically, unidirectional heat accumulation type radiant tube can be by oily page for pipe Rock is broken up makes it be uniformly distributed, and oil shale stops 1-50 minute in the reactor from top to bottom, and is heated to 500-600 DEG C, pipe Wall temperature is controlled in 500~700 DEG C of scopes using gas control valve, completes pyrolytic process.
According to embodiment of the present utility model, before oil shale is added pyrolysis hopper, can also be in advance to oil shale It is dried process, it is for instance possible to use the flue gas that heat accumulation type radiant tube is discharged is dried to oil shale and the pre-heat treatment, by This, can remove the moisture in oil shale, is conducive to improving pyrolysis efficiency.According to embodiment of the present utility model, this pyrolysis side Method can also include the step carrying out purified treatment to dried flue gas, so that tail gas qualified discharge, reduces environmental pollution.
According to embodiment of the present utility model, the concrete species of semicoke conveyer device is not particularly limited, including but do not limit In star or conveying worm, under preferable case, semicoke conveyer can be conveying worm.Thereby, it is possible to realize to semicoke Automatic Conveying, and conveying capacity is controlled, and device structure is simple, easy to operate.
B. it is pyrolyzed the described communication member by setting on the heat-insulated brick wall of described reactor for the oil gas of generation, enter into described The described cracking room of reactor.
According to specific embodiment of the utility model, heat-insulated brick wall is arranged in reactor it is preferred that being located at reactor horizontal stroke To at the 2/3 of width, the thickness of heat-insulated brick wall is 5-15cm, heat-insulated brick wall vertically through in reactor, by reactor Inner 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, pyrolysis The oil gas that room produces, can enter cracking room and carry out deep pyrolytic, the tar molecules of macromole are cracked into the gaseous state of small molecule Hydro carbons, produces substantial amounts of cracking gas, thus avoiding the problem producing pyrolysis oil dust-laden.And, two can be carried out in a body of heater Plant operation, unite two into one, save construction cost and floor space.
According to specific embodiment of the utility model, the concrete species of communication member is not particularly limited, as long as can be by Pyrolysis chamber connects with cracking room, thus the oil gas that pyrolysis chamber is produced is passed into cracking room.More of the present utility model In embodiment, 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 Be arranged on the pore area of the inclusion porous on heat-insulated brick wall, under preferable case, the height of described pore area is 3-15cm, described hole straight Footpath is 1-3cm.Communication member can also be on heat-insulated brick wall longitudinal length, positioned at the opening of lower position, under preferable case, institute The height stating opening is 3-15cm.
C. the oil gas being pyrolyzed generation enters into described cracking interior, completes cracking process, produces cracking gas.
According to specific embodiment of the utility model, described cracking interior distributed at least one described heat accumulating type radiation Pipe, it is preferred that described at least one heat accumulation type radiant tube is uniformly distributed, specifically, and is heated to 650-900 DEG C, tube wall temperature Controlled in 650~900 DEG C of scopes using gas control valve, complete thermal cracking processes, the tar molecules of macromole are cracked into little point The gaseous hydrocarbons of son, produces substantial amounts of cracking gas, it is to avoid the problem of pyrolysis oil dust-laden, and the cleaning being truly realized oil shale is high Effect utilizes.
D. described cracking gas enters into described spray column by the cracking gas outlet being arranged on the side wall of described cracking room In, purified treatment is carried out to described cracking gas.
E. the net cracking gas through purifying enters in described fuel cartridge and stores.
According to embodiment of the present utility model, this system can also include:Can also enter between spray column and fuel cartridge One step is provided with combustion gas air-introduced machine 11, the sky that combustion gas air-introduced machine 11 can quickly and efficiently will obtain through purification in spray column So gas is delivered in fuel cartridge and is stored, and further, the cracking gas obtaining can be further used for preparing LNG or LNP.Send out A person of good sense finds, can significantly improve the yield of cracking gas using this system, have enough gas to be used for producing liquefied natural gas (LNG) or liquefied petroleum gas (LPG), good in economic efficiency.
Inventor finds, according to the method for this utility model embodiment, can process 20mm particles below oil shale, Shale utilization rate is high, is suitable to promote, and the oil gas that pyrolysis chamber produces, and can carry out deep pyrolytic, the tar of macromole in cracking room Molecular cleavage is the gaseous hydrocarbons of small molecule, produces substantial amounts of cracking gas product, it is to avoid the problem of pyrolysis oil dust-laden, really real The clean and effective having showed Fossil fuel utilizes.
Below the specific work process of oil shale pyrolysis of the present utility model and cracking system and method is retouched in detail State, specific as follows:
First, the raw shale oil of granularity≤20mm is added in loading hopper 1, will be stored in using the second feed arrangement and add Raw shale oil in hopper 1 adds in pneumatic conveyer dryer 2,200~250 degrees Celsius simultaneously discharging in heat accumulation type radiant tube 15 Flue gas be passed through in pneumatic conveyer dryer 2, raw shale oil is dried in the presence of flue gas and is lifted, then flue gas and raw material The mixture of oil shale discharges pneumatic conveyer dryer, enters in gas-solid separating device, separate obtain flue gas (temperature is about 70~ 110 degrees Celsius) discharge gas-solid separating device 4, and enter exhaust gas cleaner 7 in the presence of tail gas air-introduced machine 6, carry out net Change is processed, and purifies the flue gas meeting discharge standard obtaining and empties through chimney 8, separates the raw oil obtaining in gas-solid separating device Shale discharges gas-solid separating device, and enters in pyrolysis hopper, then will be stored in pyrolysis material using the first pay-off 9 Raw shale oil adds in pyrolysis reactor, moves from top to bottom, stops about 1~50 minute, in the heat accumulating type spoke being uniformly arranged Penetrate pipe (tube wall temperature be about 500~700 degrees Celsius) break up with heat effect under, oil shale thermally equivalent is warming up to 500~ 600 degrees Celsius, complete pyrolytic reaction, obtain being pyrolyzed oil gas and semicoke, the pyrolysis oil gas obtaining passes through the company on heat-insulated brick wall 16 Logical component 17 enters cracking room and carries out deep pyrolytic, and semicoke or other solid impurities are delivered to gasification by semicoke conveyer device 14 Carry out gasification process in stove, obtain combustible gas and be passed through heat accumulation type radiant tube for carrying out to the oil shale in pyrolysis reactor adding Heat, lime-ash that gasification process obtains discharges gasification furnace 13, crack in cracking room the cracked gas obtaining by cracking gas export into Enter spray column 10 to purify, purified gas enters fuel cartridge 12 and stored, can be further used for preparing LNG or LPG.
Embodiment of the present utility model is described below in detail.
Case study on implementation:Using thermal storage type moving bed pyrolysis and cracking system, Longkou oil shale is processed, the base of raw material Plinth data is shown in Table 1.
Table 1:Longkou oil shale basic data
Process Longkou oil shale using this system, the gas products yield obtaining is 15%, far above the pyrolysis of laboratory aluminum rice steamer Obtained factor of created gase, pyrolytic tar almost all is cracked into gaseous products, and factor of created gase is high.Cracking gas calorific value is up to 5000kcal/m3, quality height.
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 The feature of the different embodiments described in this specification or example and different embodiment or example can be carried out by technical staff In conjunction with and combination.
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 (8)

1. a kind of oil shale pyrolysis and cracking system:It is characterized in that, including:
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 pyrolysis reactor short transverse multi-tier arrangement in described pyrolysis Inside room 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 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 is arranged on the bottom of described heat-insulated brick wall, for the oil gas producing pyrolysis chamber, passes through Described communication member, is passed into described cracking room;
Spray column, described spray column is connected with the outlet of described cracking gas;
Fuel cartridge, described fuel cartridge is connected with described spray column.
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.
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.
4. system according to claim 1 is it is characterised in that described communication member is described heat-insulated brick wall longitudinal length On, positioned at the opening of lower position, the height of described opening is 3-15cm.
5. the system according to any one of claim 1-4 is it is characterised in that further include:Gasification furnace, described gasification Stove one end is connected with the fuel gas inlet of described heat accumulation type radiant tube, and the other end is connected with semicoke conveyer device.
6. the system according to any one of claim 1-4 is it is characterised in that 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 separating device, it is connected with described drying device and described pyrolysis hopper respectively;
Exhaust gas cleaner, it is connected with described gas-solid separating device.
7. the system according to any one of claim 1-4 is it is characterised in that described pyrolysis hopper enters by described first Material device is connected with described charging aperture.
8. system according to claim 5 is it is characterised in that further comprise semicoke outlet, it is arranged on described heat The bottom of solution room, described semicoke outlet is connected with described semicoke conveyer device.
CN201620456517.6U 2016-05-19 2016-05-19 Oil shale pyrolysis and cracking system Withdrawn - After Issue CN205974386U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105885900A (en) * 2016-05-19 2016-08-24 北京神雾环境能源科技集团股份有限公司 Oil shale pyrolysis and cracking system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105885900A (en) * 2016-05-19 2016-08-24 北京神雾环境能源科技集团股份有限公司 Oil shale pyrolysis and cracking system
CN105885900B (en) * 2016-05-19 2018-09-07 神雾科技集团股份有限公司 A kind of oil shale pyrolysis and cracking system

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