CN205974391U - From oil shale pyrolysis of dust removal type and cracking system - Google Patents

From oil shale pyrolysis of dust removal type and cracking system Download PDF

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Publication number
CN205974391U
CN205974391U CN201620661491.9U CN201620661491U CN205974391U CN 205974391 U CN205974391 U CN 205974391U CN 201620661491 U CN201620661491 U CN 201620661491U CN 205974391 U CN205974391 U CN 205974391U
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China
Prior art keywords
pyrolysis
gas
cracking
oil
dust arrester
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CN201620661491.9U
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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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Priority to CN201620661491.9U priority Critical patent/CN205974391U/en
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Abstract

The utility model belongs to the technical field of the oil shale pyrolysis, mainly an oil shale pyrolysis of the granule of dust removal type certainly and the cracking system based on the regenerative radiant tube heating. This system includes: the pyrolysis hopper, a feed arrangement, pyrolysis and cracking reactor include: feed inlet, pyrolysis chamber, splitting chamber and cracked gas outlet, and: regenerative radiant tube, thermal -insulated brick wall, communication member, grain bed dust collector, spray column and gas jar. The utility model discloses a this reaction system simple structure, and convenient for operation, and the temperature is uniformly distributed, heat effectually, be equipped with the grain bed dust remover in pyrolysis chamber oil gas exit, the oil gas that the pyrolysis chamber produced, after the grain bed removes dust, the reentrant splitting chamber of uncontaminated oil gas carries out deep cracking, the burnt oil molecules schizolysis of macromolecule is the gaseous hydrocarbons of micro molecule, generate a large amount of uncontaminated cracking gas products, rear end dust removal pressure has been reduced, the problem of pyrolysis oil dust -laden has been avoided, fossil fuel's clean high -efficient the utilization has really been realized.

Description

One kind is from dedusting type oil shale pyrolysis and cracking system
Technical field
This utility model is created and is belonged to oil shale pyrolysis technical field, mainly a kind of based on heat accumulation type radiant tube heating From the pyrolysis of dedusting type Oil Shale Particles and cracking system, it is used for producing cleaning combustible gas.
Background technology
World's oil shale resources are enriched, and 37 national oil shale reserves summations of verifying are converted into shale oil about 4000 altogether Many hundred million tons, verify crude oil reserve greatly more than the world, also big than world crude resources.The oil shale proved reserves of China are converted into page Shale oil is hundred million tons about more than 400.Currently, for some countries such as China, the crude oil of production can not meet the demand of this country, and must Substantial amounts of imported crude oil must be relied on.Carbonization furnace can be divided into massive shale gas retort(Oil shale granularity typically in 8mm or More than 10mm), granule and powder carbonization furnace.At present block carbonization furnace have the Fushun stove of China, the three of Shenmu County Abel Kiviat (Kiviter) stove of Jiang Fanglu, Ai Shaniya, Petro Se Kesi (Petrosix) stove of Brazil.Oil Shale Particles Gas retort has the Ge Luote of Ai Shaniya(Galoter)Stove and the ATP stove of Australia.The existing pyrolysis type of furnace is all to produce oil Product are main purpose, but are mostly pyrolyzed the type of furnace, especially to process the type of furnace as raw material for the powdery oil shale, contain in pyrolysis oil A large amount of dirt, cause pyrolysis oil to be difficult to effectively utilizes, the problems such as pyrolysis oil value is high.Therefore, how to design a kind of high-effective dust-removing, System structure and technological process all simply systems 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, designs and develop one kind from dedusting type oil shale pyrolysis and cracking System, this response system can be pyrolyzed and be cracked two kinds of operations, the oil gas that pyrolysis chamber produces, and enters grain bed dedusting, passes through After grain bed dedusting, clean oil gas enters back into cracking room and carries out deep pyrolytic, reduces rear end dedusting pressure, by macromole Tar molecules are cracked into the gaseous hydrocarbons of small molecule, and this reactor can produce substantial amounts of cracking gas, thus avoiding production pyrolysis The problem of oily dust-laden, the clean and effective being truly realized oil shale utilizes.This reactor employs heat accumulation type radiant tube heating skill Art, without gas, solid heat carrier heating, simplifies system process while the thermal efficiency that improve reactor.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is:
In view of this, this utility model provides one kind from dedusting type oil shale pyrolysis and cracking system.According to this practicality New embodiment, this system includes:Pyrolysis hopper;First feed arrangement, described first feed arrangement and described pyrolysis hopper Connect;Pyrolysis and cracking reactor, including:Charging aperture, pyrolysis chamber, cracking room and cracking gas outlet, described charging aperture is arranged on On the roof of described 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 is indoor in described pyrolysis chamber and described cracking along the short transverse multi-tier arrangement of described pyrolysis reactor Portion, 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 on instead Answer at the 2/3 of device transverse width, vertically through in described reactor, the inner space of described reactor is separated into described Pyrolysis chamber and described cracking room;Communication member, described communication member is on described heat-insulated brick wall longitudinal length, positioned at lower position Opening, for described pyrolysis chamber is connected with described cracking room;Grain bed dust arrester, described grain bed dust arrester and institute The described opening stating heat-insulated brick wall is fixedly connected, and described grain bed dust arrester is located at the side of described pyrolysis chamber along level side To extending to, described pyrolysis is indoor, for the oil gas producing described pyrolysis chamber, by described grain bed dust arrester, 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 and described spray Tower connects.
Inventor finds, simple according to this response system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good, can carry out two kinds of operations, unite two into one in a body of heater, save construction cost and floor space, it is anti- Answer device to be divided into pyrolysis chamber and cracking room, be provided with grain bed cleaner unit at pyrolysis chamber's oil gas vent, the oil gas that pyrolysis chamber produces, warp After crossing grain bed dedusting, clean oil gas enters back into cracking room and carries out deep pyrolytic, and the tar molecules of macromole are cracked into little point The gaseous hydrocarbons of son, generate substantial amounts of clean cracking gas product, reduce rear end dedusting pressure, it is to avoid pyrolysis oil dust-laden Problem, the clean and effective being truly realized Fossil fuel utilizes.
According to embodiment of the present utility model, described grain bed dust arrester is located at setting tool on the side of pyrolysis chamber side There is the pore area in multiple holes, the bottom surface that described grain bed dust arrester is located at pyrolysis chamber side is provided with dust outlet, and described Grain bed dust arrester be located at cracking room side side surface upper part be provided with for described dust arrester is carried out with blowback blow valve port, Bottom is provided with pyrolysis gas outlet.
According to embodiment of the present utility model, described grain bed dust arrester is embedded in described opening.
According to embodiment of the present utility model, the thickness of described heat-insulated brick wall is 50-150mm, and the height of described pore area is 150-1500mm, a diameter of 1-30mm in described hole;The top that described grain bed dust arrester is located at pyrolysis chamber side is inclined-plane Design, the height of described grain bed dust arrester is 200-2000mm, and width is 100-500mm, described grain bed dust arrester Built with the high filter medium of 1mm-20mm;Preferably, described filter medium is perlite, sandstone or spherical ceramic particles.
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 also include:Loading hopper;Second feed arrangement, its with described Loading hopper is connected;Drying device, it is connected with the exhanst gas outlet on described second feed arrangement and described heat accumulation type radiant tube respectively Connect;Gas-solid separating device, it is connected with described drying device and described pyrolysis hopper respectively;Exhaust gas cleaner, itself and institute State gas-solid separating device to 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 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. the oil gas being pyrolyzed generation was carried out by the described grain bed dust arrester of setting on the heat-insulated brick wall of described reactor After filtering dust collecting, clean oil gas enters into described cracking interior, completes cracking process, produces cracking gas;C. described cracking gas leads to Cross described cracking gas outlet to enter in described spray column, purified treatment is carried out to described cracking gas;D. only split through purify Vent one's spleen to enter in described fuel cartridge and store.
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)Take heat accumulation type radiant tube moving bed process heating 20mm particles below and powder oil shale, Temperature Distribution is equal Even, 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;
3)This response system can produce substantial amounts of cracking gas product, it is to avoid the problem of pyrolysis oil dust-laden, is truly realized The clean and effective of Fossil fuel utilizes;
4)It is provided with grain bed cleaner unit at pyrolysis chamber's oil gas vent, the oil gas that pyrolysis chamber produces, after grain bed dedusting, Clean oil gas enters back into cracking room and carries out deep pyrolytic, reduces rear end dedusting pressure, generates clean cracking gas;
5)Two kinds of operations can be carried out in one body of heater, unite two into one, save construction cost and floor space.
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 being provided with grain bed dust arrester in this utility model.
Fig. 4 is the structure chart of the grain bed dust arrester in this utility model reactor.
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;26th, grain bed dust arrester;2601st, pore area;2602nd, dust outlet;2603rd, blow valve port;2604、 Pyrolysis gas 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 one kind from dedusting type oil shale pyrolysis and cracking system.According to enforcement of the present utility model Example, with reference to shown in Fig. 1, this system includes:Pyrolysis hopper 5;First feed arrangement 9, described first feed arrangement and described pyrolysis Hopper connects;Pyrolysis and cracking reactor 3, including:Charging aperture 21, pyrolysis chamber 18, cracking room 19, cracking gas outlet 20, accumulation of heat Formula radial canal 15, heat-insulated brick wall 16, communication member 17 and grain bed dust arrester 26, wherein, described charging aperture is arranged on described On the roof of pyrolysis chamber, the outlet of described cracking gas is arranged on the side wall of described cracking room, described heat-insulated brick wall vertically through In described reactor, the inner space of described reactor is separated into described pyrolysis chamber and described cracking room, described connection structure Part is on described heat-insulated brick wall longitudinal length, positioned at the opening of lower position, for connecting described pyrolysis chamber and described cracking room Logical;Described grain bed dust arrester is fixedly connected with the described opening of described heat-insulated brick wall, and described grain bed dust arrester position Extend horizontally and to described pyrolysis interior in the side of described pyrolysis chamber, for the oil gas producing described pyrolysis chamber, lead to Cross described grain bed dust arrester, be passed into described cracking room;Spray column 10, described spray column is with described cracking gas outlet even Connect;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, can carry out two kinds of operations, unite two into one in a body of heater, save construction cost and floor space, it is anti- Answer device to be divided into pyrolysis chamber and cracking room, be provided with grain bed cleaner unit at pyrolysis chamber's oil gas vent, the oil gas that pyrolysis chamber produces, warp After crossing grain bed dedusting, clean oil gas enters back into cracking room and carries out deep pyrolytic, and the tar molecules of macromole are cracked into little point The gaseous hydrocarbons of son, generate substantial amounts of clean cracking gas product, reduce rear end dedusting pressure, it is to avoid pyrolysis oil dust-laden Problem, the clean and effective being truly realized Fossil fuel utilizes.
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, enters described grain bed dust arrester, and after dust removal by filtration, clean oil gas enters into cracking room, in cracking room to oil gas It is provided with the unidirectional heat accumulation type radiant tube being evenly arranged, and is heated to 650-900 DEG C, tube wall temperature utilizes gas control valve to control In 650~900 DEG C of scopes, complete cracking process, the tar molecules of macromole are cracked into the gaseous hydrocarbons of small molecule, produce a large amount of Cracking gas, it is to avoid the problem of pyrolysis oil dust-laden, the clean and effective being truly realized oil shale utilizes.According to this utility model Embodiment, the shape of heat accumulation type radiant tube is not particularly limited, and in some embodiments of the present utility model, can be cylinder Shape, is thus conducive to breaing up of oil shale, realizes mixing oil shale in the reactor dispersed.
According to specific embodiment of the utility model, Fig. 3 is to install this utility model when in terms of the from left to right of reactor There is the front view of the heat-insulated brick wall of grain bed dust arrester, as shown in Figures 2 and 3, heat-insulated brick wall is arranged in reactor, preferably , at the 2/3 of reactor transverse width, the thickness of heat-insulated brick wall is 50-150mm, and heat-insulated brick wall is vertically through in anti- Answer in device, the inner space of reactor is separated into pyrolysis chamber and cracking room, this structure makes to be provided with heat in a body of heater Solution room and cracking room, the oil gas that pyrolysis chamber produces, the oil gas that pyrolysis produces passes through the institute of setting on the heat-insulated brick wall of described reactor State after grain bed dust arrester carries out dust removal by filtration, it is indoor that clean oil gas enters into described cracking, completes cracking process, will be big The tar molecules of molecule are cracked into the gaseous hydrocarbons of small molecule, produce substantial amounts of cracking gas, thus avoid production pyrolysis oil containing The problem of dirt.And, 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 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, as shown in Fig. 2 communication member is on described heat-insulated brick wall longitudinal length, positioned at the opening of lower position.
According to specific embodiment of the utility model, the concrete mounting means of described grain bed dust arrester is unrestricted, can Think welding, rivet or inlay, according to some embodiments of the present utility model, Fig. 4 is grain bed dedusting dress of the present utility model The structure chart put, as shown in Figure 1, Figure 2 and Figure 4, particle dust-collecting equipment is embedded in described by this utility model using mosaic mode In opening, grain bed dust arrester is located at the pore area 2601 that setting on the side of pyrolysis chamber side has multiple holes, described granule The bottom surface that bed dust arrester is located at pyrolysis chamber side is provided with dust outlet 2602, and described grain bed dust arrester is located at and splits The side surface upper part of solution room side is provided with for described dust arrester is carried out with the blow valve port 2603 of blowback, bottom is provided with pyrolysis gas row Outlet 2604.
According to specific embodiment of the utility model, as shown in Figure 3 and Figure 4, the height of described pore area is 150-1500mm, A diameter of 1-30mm in described hole;The top that described grain bed dust arrester is located at pyrolysis chamber side is inclined design, described The height of grain bed dust arrester is 200-2000mm, and width is 100-500mm, and described grain bed dust arrester is built with 1mm- The high filter medium of 20mm;According to some embodiments of the present utility model, it is perlite, sand that this utility model adopts filter medium Stone or spherical ceramic particles.
According to specific embodiment of the utility model, this system may further include:Respectively with heat accumulation type radiant tube The gasification furnace that fuel gas inlet is connected with semicoke conveyer device.Thus, it is possible to pyrolysis in pyrolysis chamber be produced using semicoke conveyer device Raw semicoke is delivered in gasification furnace, carries out gasification process to semicoke, to obtain combustible gas and lime-ash, the combustible gas obtaining is permissible It is passed through in heat accumulation type radiant tube, is passed through air in heat accumulation type radiant tube simultaneously, so that combustible gas is burnt to the material in pyrolysis chamber Heated.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 described reactor, the described pyrolysis chamber of described reactor completes pyrolytic process, pyrolysis char is from reactor bottom The semicoke outlet in portion 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. the oil gas being pyrolyzed generation is carried out by the described grain bed dust arrester of setting on the heat-insulated brick wall of described reactor After dust removal by filtration, clean oil gas enters into described cracking interior, completes cracking process, produces cracking gas.
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 50-150mm, heat-insulated brick wall vertically through in reactor, by reactor Inner space be separated into pyrolysis chamber and cracking room, this structure makes to be provided with pyrolysis chamber and cracking room in a body of heater, heat The oil gas that solution room produces, the oil gas that pyrolysis produces passes through the described grain bed dust arrester of setting on the heat-insulated brick wall of described reactor After carrying out dust removal by filtration, clean oil gas enters into described cracking interior, completes cracking process, the tar molecules of macromole are split Solve the gaseous hydrocarbons for small molecule, produce substantial amounts of cracking gas, thus avoiding the problem producing pyrolysis oil dust-laden.And, one Two kinds of operations can be carried out in individual body of heater, unite two into one, save construction cost and floor space.
According to specific embodiment of the utility model, the concrete mounting means of described grain bed dust arrester is unrestricted, can Think welding, rivet or inlay, according to some embodiments of the present utility model, granule is removed using mosaic mode by this utility model Dirt device is embedded in described opening, and grain bed dust arrester is located at the hole that setting on the side of pyrolysis chamber side has multiple holes Band, the bottom surface that described grain bed dust arrester is located at pyrolysis chamber side is provided with dust outlet, and described grain bed dedusting dress Setting in cracking room side side surface upper part be provided with for the blow valve port of blowback is carried out to described dust arrester, bottom is provided with pyrolysis Gas outlet.
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.
C. described cracking gas is entered in described spray column by described cracking gas outlet, and described cracking gas is purified Process.
D. 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, simple according to this response system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good, can process 20mm particles below oil shale, and shale utilization rate is high, are suitable to promote, in a body of heater Two kinds of operations can be carried out, unite two into one, save construction cost and floor space, its reactor is divided into pyrolysis chamber and cracking room, It is provided with grain bed cleaner unit at pyrolysis chamber's oil gas vent, the oil gas that pyrolysis chamber produces, after grain bed dedusting, the oil gas of cleaning Enter back into cracking room and carry out deep pyrolytic, the tar molecules of macromole are cracked into the gaseous hydrocarbons of small molecule, generate substantial amounts of clean Net cracking gas product, reduce rear end dedusting pressure, it is to avoid the problem of pyrolysis oil dust-laden, is truly realized Fossil fuel Clean and effective utilizes.
Below the specific work process from dedusting type oil shale pyrolysis and cracking system and method for the present utility model is entered Row describes in detail, 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 described reactor insulating brick On wall, the described grain bed dust arrester 26 of setting carries out dust removal by filtration, by blow valve port 2603, described dust arrester is entered simultaneously Row blowback, the dust of generation is discharged into described semicoke conveyer device 14 by dust outlet 2602, and clean oil gas passes through Pyrolysis gas outlet 2604 enters into described cracking interior, carries out deep pyrolytic, and semicoke or other solid impurities are defeated by semicoke Send device to be delivered in gasification furnace and carry out gasification process, obtain combustible gas and be passed through heat accumulation type radiant tube in pyrolysis reactor Oil shale heated, lime-ash that gasification process obtains discharges gasification furnace 13, cracks the cracked gas obtaining and lead in cracking room Cross cracking gas outlet entrance spray column 10 to purify, purified gas enters fuel cartridge 12 and stored, and can be further used for Preparation LNG or LPG.
Specific embodiment:
Using from dedusting type oil shale pyrolysis and cracking system, Longkou oil shale is processed, the basic data of raw material is shown in Table 1.
Table 1:Longkou oil shale basic data
Using this reactor for treatment Longkou oil shale, the gas products yield obtaining is 15%, far above laboratory aluminum rice steamer heat Factor of created gase obtained by solution, 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, in the cracking gas of this system output, dust content is less than 1%, and gas more cleans.
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. one kind is from dedusting type oil shale pyrolysis and cracking system it is characterised 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 On the roof of described 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 on described heat-insulated brick wall longitudinal length, positioned at the opening of lower position, for by institute State pyrolysis chamber to connect with described cracking room;
Grain bed dust arrester, described grain bed dust arrester is fixedly connected with the described opening of described heat-insulated brick wall, and described Grain bed dust arrester is located at the side of described pyrolysis chamber, and to extend horizontally and to described pyrolysis indoor, for by described pyrolysis The oil gas that room produces, by described grain bed dust arrester, 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 grain bed dust arrester is located at the side of pyrolysis chamber side On face, setting has the pore area in multiple holes, and the bottom surface that described grain bed dust arrester is located at pyrolysis chamber side is provided with dust discharge Mouthful, and described grain bed dust arrester be located at cracking room side side surface upper part be provided with for blowback is carried out to described dust arrester Blow valve port, bottom be provided with pyrolysis gas outlet.
3. system according to claim 1 is it is characterised in that described grain bed dust arrester is embedded in described opening.
4. system according to claim 2 it is characterised in that described heat-insulated brick wall thickness be 50-150mm, described hole The height of band is 150-1500mm, a diameter of 1-30mm in described hole;Described grain bed dust arrester is located at pyrolysis chamber side Top is inclined design, and the height of described grain bed dust arrester is 200-2000mm, and width is 100-500mm, described granule Bed dust arrester is built with the high filter medium of 1mm-20mm.
5. the system according to any one of claim 1-3 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 1-3 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 1-3 is it is characterised in that described pyrolysis hopper enters by described first Material device is connected with described charging aperture;Further comprise semicoke outlet, it is arranged on the bottom of described pyrolysis chamber, described semicoke Outlet is connected with described semicoke conveyer device.
8. system according to claim 4 it is characterised in that described filter medium be perlite, sandstone or ceramic variole Grain.
CN201620661491.9U 2016-06-29 2016-06-29 From oil shale pyrolysis of dust removal type and cracking system Withdrawn - After Issue CN205974391U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105925290A (en) * 2016-06-29 2016-09-07 北京神雾环境能源科技集团股份有限公司 Self-dust-removal type pyrolyzing and cracking system for oil shale
CN110878839A (en) * 2019-11-20 2020-03-13 中国科学院广州能源研究所 High-temperature-resistant valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105925290A (en) * 2016-06-29 2016-09-07 北京神雾环境能源科技集团股份有限公司 Self-dust-removal type pyrolyzing and cracking system for oil shale
CN105925290B (en) * 2016-06-29 2018-07-13 神雾科技集团股份有限公司 One kind is from dedusting type oil shale pyrolysis and cracking system
CN110878839A (en) * 2019-11-20 2020-03-13 中国科学院广州能源研究所 High-temperature-resistant valve

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Address after: 102200 Beijing City, Changping District science and Technology Park Chang Huai Lu No. 155

Patentee after: Shenwu science and technology group Limited by Share Ltd

Address before: 102200 Beijing city Changping District Machi Town cow Road No. 18

Patentee before: Beijing Shenwu Environment Energy Technology Group Co., Ltd.

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Denomination of utility model: Self-dust-removal type pyrolyzing and cracking system for oil shale

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