CN205974388U - Oil shale pyrolysis and catalytic cracking system - Google Patents

Oil shale pyrolysis and catalytic cracking system Download PDF

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Publication number
CN205974388U
CN205974388U CN201620456519.5U CN201620456519U CN205974388U CN 205974388 U CN205974388 U CN 205974388U CN 201620456519 U CN201620456519 U CN 201620456519U CN 205974388 U CN205974388 U CN 205974388U
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China
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pyrolysis
catalyst
gas
cracking
heat
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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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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

The utility model belongs to the technical field of the oil shale pyrolysis, concretely relates to granule oil shale pyrolysis and catalytic cracking system based on the regenerative radiant tube heating, this system includes: pyrolysis hopper, a feed arrangement, pyrolysis and parts such as the anti - ware of catalytic cracking, spray column and gas jar, wherein, the anti - ware of pyrolysis and catalytic cracking is including feed inlet, pyrolysis chamber, splitting chamber and cracked gas outlet, and: regenerative radiant tube, thermal -insulated brick wall, catalyst joining device and communication member. This reaction system simple structure, convenient operation, the distribution of temperature is even, heat effectual, the shale high -usage, in addition, the reactor divide into pyrolysis chamber and splitting chamber, oil gas that the pyrolysis chamber produced can carry out degree of depth catalytic cracking at splitting chamber, the burnt oil molecules schizolysis of macromolecule be the gaseous hydrocarbons of micro molecule, the combustible gas productivity is high, has avoided the problem of production pyrolysis oil dust -laden, has really realized fossil fuel's clean high -efficient utilization.

Description

A kind of oil shale pyrolysis and catalytic 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 catalytic 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 Catalytic cracking reaction system, this response system structure is simple, easy to operate, uniformity of temperature profile, and heats are good, can carry out heat Solution and two kinds of operations of cracking, the oil gas that pyrolysis chamber produces, can enter cracking room and carry out Deep catalytic cracking, by Jiao of macromole Oil molecule is cracked into the gaseous hydrocarbons of small molecule, and this reactor can produce substantial amounts of cracking gas, thus avoiding production pyrolysis oil The problem of 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 catalytic cracking system.According to this utility model Embodiment, this system includes:Pyrolysis hopper;First feed arrangement, described first feed arrangement is connected with described pyrolysis hopper; Pyrolysis and catalytic cracking reaction device, 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;Catalyst-adding device, it is connected with described cracking room, for catalyst for cracking is put on institute State in cracking room;Communication member, described communication member is arranged on the bottom of described heat-insulated brick wall, for producing described pyrolysis chamber Oil gas, by described communication member, be passed into described cracking room;Spray column, described spray column is with described cracking gas outlet even Connect;Fuel cartridge, described fuel cartridge is connected with spray column.
Inventor finds, takes heat accumulation type radiant tube moving bed work according to this response system of this utility model embodiment Skill, response system structure is simple, easy to operate, uniformity of temperature profile, and heats are good, and can process 20mm particles below Oil shale, shale utilization rate is high, is suitable to promote, additionally, can carry out two kinds of operations in a body of heater, unites two into one, saves and build Cost and floor space, reactor is divided into pyrolysis chamber and cracking room, the oil gas that pyrolysis chamber produces, and can carry out depth in cracking room and urge Change cracking, the tar molecules of macromole are cracked into the gaseous hydrocarbons of small molecule, fuel gas yield is high, it is to avoid production pyrolysis oil The problem of dust-laden, the clean and effective being truly realized Fossil fuel utilizes;Wherein in cracking gas, hydrogen content is high, quality better.
According to embodiment of the present utility model, described communication member is the multiple hole of inclusion being arranged on described heat-insulated brick wall Pore area;Or, described communication member is on described heat-insulated brick wall longitudinal length, positioned at the opening of lower position.
According to embodiment of the present utility model, the thickness of described heat-insulated brick wall is 5-15cm, and the height of described pore area is 3- 15cm, a diameter of 1-3cm in described hole, the height of described opening is 3-15cm.
According to embodiment of the present utility model, this system further includes:Gasification furnace, described gasification furnace one end and described storage The fuel gas inlet of hot type radial canal 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 catalyst-adding device includes:Catalyst hooper;Catalyst is responsible for, Described catalyst supervisor is connected with described catalyst hooper;Catalyst arm, described catalyst arm and described catalyst supervisor It is connected, described catalyst arm passes through the wall of described reactor cracking room and extends to inside described cracking room;At least one Catalyst ejector part, described catalyst ejector part is arranged on described catalyst arm, and is located inside described cracking room;Preferably , described catalyst arm is multiple and arranged parallel to each other along the length direction of described catalyst supervisor, and described catalyst props up Pipe is arranged on the interlayer of described heat accumulation type radiant tube;Preferably, described catalyst ejector part includes catalyst ejection passage and sets Put the nozzle on described catalyst ejection passage, described nozzle is provided with regulating valve.
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 catalytic pyrolysiss.According to embodiment of the present utility model, the method comprises the following steps:A. Oil Shale Particles are led to Cross described first feed arrangement and described charging aperture is added in described reactor, complete in the described pyrolysis chamber of described reactor Become pyrolytic process;B. the oil gas being pyrolyzed generation, by the described communication member of setting on the heat-insulated brick wall of described reactor, enters into The described cracking room of described reactor;C. the oil gas being pyrolyzed generation enters into described cracking interior, described catalyst-adding device Catalyst is sprayed in described cracking room, described pyrolysis oil gas completes catalytic pyrolysis process in described cracking interior, and generation is split Vent one's spleen;D. described cracking gas is entered in described spray column by described cracking gas outlet, and described cracking gas is carried out at purification Reason;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 enter from described reactor top Material mouth is added in described reactor, and is broken up by the described heat accumulation type radiant tube in described reactor, and pyrolysis char is from described The semicoke outlet of reactor bottom is discharged;In described step a, Oil Shale Particles are by the described accumulation of heat in described reactor pyrolysis chamber Formula radial canal is heated to 500-600 DEG C, and in described step b, pyrolysis oil gas is by the described heat accumulating type in described reactor cracking room Radial canal is heated to 600-900 DEG C, and in described step c, described catalyst is equably sprayed on by described catalyst ejector part In described cracking room.
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)Two kinds of operations can be carried out in one body of heater, unite two into one, save construction cost and floor space;
2)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;
3)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;
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 catalytic cracking system.
Fig. 2 is the structure of reactor figure of this utility model pyrolysis and catalytic 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, catalyst hooper;16th, catalyst ejection passage;17th, accumulation of heat Formula radial canal;18th, heat-insulated brick wall;19th, communication member;20th, catalyst supervisor;21st, catalyst arm;22nd, pyrolysis chamber;23rd, split Solution;24th, cracking gas outlet;25th, charging aperture;26th, fuel gas inlet;27th, exhanst gas outlet;28th, air intake;29th, 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 catalytic cracking system.According to embodiment of the present utility model, With reference to 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 catalytic cracking reaction device 3, it includes:Charging aperture 25, pyrolysis chamber 22, cracking room 23, cracking gas outlet 24, accumulation of heat Formula radial canal 17, heat-insulated brick wall 18, catalyst-adding device and communication member 19, wherein, described charging aperture is arranged on described heat On the roof of solution room, the outlet of described cracking gas is arranged on the side wall of described cracking room, described heat-insulated brick wall vertically through in In described reactor, the inner space of described reactor is separated into described pyrolysis chamber and described cracking room, described catalyst adds It is connected with described cracking room to enter device, for catalyst for cracking is put in described cracking room, described communication member setting In the bottom of described heat-insulated brick wall, for the oil gas producing pyrolysis chamber, by described communication member, it is passed into described cracking Room;Spray column 10, described spray column is connected with the outlet of described cracking gas;Fuel cartridge 12, described fuel cartridge 12 and described spray column Connect.
Inventor finds, simple according to this response system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good, can be pyrolyzed and be cracked two kinds of operations, and the oil gas that pyrolysis chamber produces can enter cracking room and carry out Deep catalytic cracks, and the tar molecules of macromole is cracked into the gaseous hydrocarbons of small molecule, this reactor can produce substantial amounts of splitting Vent one's spleen, thus avoiding the problem producing pyrolysis oil dust-laden, the clean and effective being truly realized oil shale 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.
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, and is heated to 600-900 DEG C, and tube wall temperature is using combustion Gas governor valve control is sprayed by catalyst ejection passage in 600~900 DEG C of scopes, the simultaneously catalyst in catalyst-adding device Spill entrance cracking room, be provided with the unidirectional heat accumulation type radiant tube being evenly arranged in cracking room, complete catalytic pyrolysis process, macromole Tar molecules be cracked into the gaseous hydrocarbons of small molecule, produce substantial amounts of cracking gas, it is to avoid the problem of pyrolysis oil dust-laden, really The clean and effective achieving oil shale utilizes.According to embodiment of the present utility model, the shape of heat accumulation type radiant tube is not subject to especially Limit, in some embodiments of the present utility model, can be cylinder, thus be conducive to breaing up of oil shale, realize mixing Oil shale in the reactor dispersed.
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 18, as shown in figure 3, communication member is permissible For being 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 A diameter of 1-3cm.Communication member can also be on heat-insulated brick wall longitudinal length, positioned at the opening of lower position, under preferable case, The height of described opening is 3-15cm.
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 catalytic cracking, the tar molecules of macromole are cracked into small molecule Gaseous hydrocarbons, produces substantial amounts of cracking gas, thus avoiding the problem producing pyrolysis oil dust-laden.And, can enter in a body of heater Two kinds of operations of row, unite two into one, and save construction cost and floor space.
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 13 that entrance is connected with semicoke conveyer device.Thus, it is possible to pyrolysis in pyrolysis chamber be produced using semicoke conveyer device Semicoke be delivered in gasification furnace, gasification process is carried out to semicoke, to obtain combustible gas and lime-ash, the combustible gas obtaining can lead to Enter in heat accumulation type radiant tube, be passed through air in heat accumulation type radiant tube simultaneously, make combustible gas burn the material in pyrolysis chamber is entered Row 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 26, air intake 28 and cigarette Gas outlet 27, 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 1 The second feed arrangement 9;Be connected with the exhanst gas outlet on described second feed arrangement and described heat accumulation type radiant tube respectively is dry Dry device 2;The gas-solid separating device 4 being connected with described drying device and described pyrolysis hopper respectively;With described gas solid separation The exhaust gas cleaner 7 that device is connected.Thus, it is possible to the oil shale in loading hopper is added by drying by the second feed arrangement In device, in drying device, in the flue gas of the heat accumulation type radiant tube in pyrolysis chamber, (temperature is about 200~250 to oil shale Degree 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 enters in exhaust gas cleaner and carries out purified treatment, to realize row up to standard Put, separate the pyrolysis material obtaining and be 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, thus, oil shale is dried in the presence of flue gas and is lifted, and the mixture of dried oil shale and flue gas is discharged Pneumatic conveyer dryer, is conducive to subsequent step to carry out.In drying device, while pyrolysis material is dried, also achieve The function of preheating, is conducive to improving in the speed of follow-up pyrolytic reaction and efficiency, and pyrolysis chamber and is discharged using heat accumulation type radiant tube Flue gas oil shale is dried and preheats the comprehensive utilization it is achieved that heat energy, effectively reduce energy consumption, reached energy-saving ring The purpose protected.
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 8, 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 11 can quickly and efficiently will obtain through purification in spray column Natural gas transportation stored to fuel cartridge, further, the cracking gas that obtains can be further used for preparing LNG or LNP.Inventor find, the yield of cracking gas can be significantly improved using this system, have enough gas for produce liquefy sky So gas (LNG) or liquefied petroleum gas (LPG), good in economic efficiency.
According to specific embodiment of the utility model, catalyst-adding device includes:Catalyst hooper 15;Catalyst is responsible for 20, described catalyst supervisor 20 is connected with described catalyst hooper 15;Catalyst arm 21, described catalyst arm is urged with described Agent supervisor be connected, and described catalyst arm passes through the wall of described reactor cracking room and extends to inside described cracking room; At least one catalyst ejector part, described catalyst ejector part is arranged on described catalyst arm, and is located at described cracking room Internal;Preferably, described catalyst arm is multiple and arranged parallel to each other along the length direction of described catalyst supervisor, described Catalyst arm is arranged on the interlayer of described heat accumulation type radiant tube;Preferably, described catalyst ejector part includes catalyst ejection Pipeline 16 and the nozzle being arranged on described catalyst ejection passage, described nozzle is provided with regulating valve.
According to embodiment of the present utility model, the species of the catalyst of employing and particle diameter are not particularly limited, this area skill Art personnel can flexibly select as needed.In some embodiments of the present utility model, the catalyst that this system adopts is permissible It is used in mixed way for one or more of dolomite, Ni base catalyst and Fe base catalyst;The particle diameter of catalyst can be little In 0.5 millimeter;Thus, catalytic efficiency is higher, the pyrolysis to oil shale and catalytic pyrolysiss carry that oily degree is higher, natural gas is received Rate is higher.
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 9.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 catalytic pyrolysiss.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 9.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 accumulation type radiant tube 17 it is preferred that described at least one heat accumulation type radiant tube is uniformly distributed, and specifically, unidirectional heat accumulation type radiant tube can be by oily page 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 14, under preferable case, semicoke conveyer can be conveying worm 14.Right thereby, it is possible to realize The Automatic Conveying of semicoke, and conveying capacity is controlled, device structure is simple, easy to operate.
B. the oil gas being pyrolyzed generation, by the described communication member 19 of setting on the heat-insulated brick wall of described reactor 18, enters into The described cracking room of described reactor.
According to specific embodiment of the utility model, heat-insulated brick wall 18 is arranged in reactor it is preferred that being located at reactor At the 2/3 of transverse width, the thickness of heat-insulated brick wall is 5-15cm, 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, can enter cracking room and carry out deep pyrolytic, the tar molecules of macromole are cracked into the gas of small molecule State hydro carbons, produces substantial amounts of cracking gas, thus avoiding the problem producing pyrolysis oil dust-laden.And, can carry out in a body of heater Two kinds of operations, unite two into one, and save construction cost and floor space.
According to specific embodiment of the utility model, the concrete species of communication member 19 is not particularly limited, as long as permissible Pyrolysis chamber is connected with cracking room, thus the oil gas that pyrolysis chamber is produced is passed into cracking room.Of the present utility model one In a little embodiments, when Fig. 3 is in terms of the from left to right of reactor, the front view of heat-insulated brick wall 18, as shown in figure 3, communication member 19 Can be for being 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 A diameter of 1-3cm in hole.Communication member 19 can also be on heat-insulated brick wall longitudinal length, positioned at the opening of lower position, preferably In the case of, the height of described opening is 3-15cm.
C. the oil gas being pyrolyzed generation enters into described cracking interior, and catalyst is sprayed on institute by described catalyst-adding device State in cracking room, described pyrolysis oil gas completes catalytic pyrolysis process in described cracking interior, produces cracking gas.
According to embodiment of the present utility model, the species of the catalyst of employing and particle diameter are not particularly limited, this area skill Art personnel can flexibly select as needed.In some embodiments of the present utility model, the catalyst that this system adopts is permissible It is used in mixed way for one or more of dolomite, Ni base catalyst and Fe base catalyst;The particle diameter of catalyst can be little In 0.5 millimeter;Thus, catalytic efficiency is higher, the pyrolysis to oil shale and catalytic pyrolysiss carry that oily degree is higher, natural gas is received Rate is higher.
According to specific embodiment of the utility model, described cracking interior distributed at least one described heat accumulation type radiant tube 17, it is preferred that described at least one heat accumulation type radiant tube is uniformly distributed, specifically, and are heated to 600-900 DEG C, tube wall temperature Controlled in 600~900 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 is entered in described spray column 10 by described cracking gas outlet, and described cracking gas is carried out only Change is processed.
E. the net cracking gas through purifying enters in described fuel cartridge 12 and stores.
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 11 can quickly and efficiently will obtain through purification in spray column Natural gas transportation stored to fuel cartridge, further, the cracking gas that obtains can be further used for preparing LNG or LNP.Inventor find, the yield of cracking gas can be significantly improved using this system, have enough gas for produce liquefy sky So 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 be pyrolyzed and be cracked two kinds of operations, and the oil gas that pyrolysis chamber produces can enter cracking room and carry out Deep catalytic cracks, and the tar molecules of macromole is cracked into the gaseous hydrocarbons of small molecule, this reactor can produce substantial amounts of splitting Vent one's spleen, thus avoiding the problem producing pyrolysis oil dust-laden, the clean and effective being truly realized oil shale 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 99 Raw shale oil in loading hopper 1 adds in pneumatic conveyer dryer 2, and 200~250 simultaneously discharging in heat accumulation type radiant tube 17 are Celsius The flue gas of degree is passed through in pneumatic conveyer dryer, and raw shale oil is dried in the presence of flue gas and is lifted, then flue gas and former The mixture of material oil shale discharges pneumatic conveyer dryer, enters in gas-solid separating device 4, and (temperature is about 70 to separate the flue gas obtaining ~110 degrees Celsius) discharge gas-solid separating device, and enter exhaust gas cleaner 7 in the presence of tail gas air-introduced machine, 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 5, then will be stored in pyrolysis material using the first pay-off 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 17 (tube wall temperature is 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, simultaneously the catalyst in catalyst hooper (include but not It is limited to one or more of dolomite, Ni base catalyst and Fe base catalyst to be used in mixed way) pass through catalyst ejection passage 16 are uniformly sprayed in cracking room through nozzle through catalyst supervisor 20, catalyst arm 21 and catalyst ejector part successively, with To pyrolysis air-fuel mixture Deep catalytic cracking is carried out by communication member 19 on heat-insulated brick wall 18 entrance cracking room, semicoke or Other solid impurities are delivered in gasification furnace 13 by semicoke conveyer device 14 and carry out gasification process, obtain combustible gas and are passed through accumulation of heat Formula radial canal is used for the oil shale in pyrolysis reactor is heated, and the lime-ash that gasification process obtains discharges gasification furnace, cracking Crack the cracked gas obtaining in room to purify by cracking gas outlet 24 entrance spray column 10, purified gas enters fuel cartridge 12 are stored, and 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 catalytic cracking system, Longkou oil shale is processed, raw material Basic data be 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 16%, 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.In cracking gas, hydrogen content is 45%, quality is high.
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 (7)

1. a kind of oil shale pyrolysis and catalytic cracking system are it is characterised in that include:
Pyrolysis hopper;
First feed arrangement, described first feed arrangement is connected with described pyrolysis hopper;
Pyrolysis and catalytic cracking reaction device, including:Charging aperture, pyrolysis chamber, cracking room and cracking gas outlet, described charging aperture setting 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;
Catalyst-adding device, it is connected with described cracking room, for putting on catalyst for cracking in described cracking room;Its In, catalyst-adding device includes:Catalyst hooper;Catalyst is responsible for, and described catalyst is responsible for and described catalyst hooper phase Even;Catalyst arm, described catalyst arm is connected with described catalyst supervisor, and described catalyst arm passes through described reaction The wall of device cracking room simultaneously extends to inside described cracking room;At least one catalyst ejector part, described catalyst ejector part setting On described catalyst arm, and it is located inside described cracking room;Described catalyst arm is multiple and along described catalyst master The length direction of pipe is arranged parallel to each other, and described catalyst arm is arranged on the interlayer of described heat accumulation type radiant tube;Described catalysis Agent jet member includes catalyst ejection passage and the nozzle being arranged on described catalyst ejection passage, and described nozzle is provided with Regulating valve;
Communication member, described communication member is arranged on the bottom of described heat-insulated brick wall, for the oil gas producing described pyrolysis chamber, By described communication member, it is passed into described cracking room;
Spray column, described spray column is connected with the outlet of described cracking gas;
Fuel cartridge, described fuel cartridge is connected with 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;Or, described communication member is opening positioned at lower position on described heat-insulated brick wall longitudinal length Mouthful.
3. system according to claim 2 it is characterised in that described heat-insulated brick wall thickness be 5-15cm, described pore area Height be 3-15cm, a diameter of 1-3cm in described hole, the height of described opening is 3-15cm.
4. the system according to any one of claim 1-3 is it is characterised in that further include: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.
5. 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.
6. 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.
7. system according to claim 4 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.
CN201620456519.5U 2016-05-19 2016-05-19 Oil shale pyrolysis and catalytic cracking system Active CN205974388U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778954A (en) * 2016-05-19 2016-07-20 北京神雾环境能源科技集团股份有限公司 Oil shale pyrolysis and catalytic cracking system
WO2018176883A1 (en) * 2017-03-28 2018-10-04 唐毓 Carbonization reactor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778954A (en) * 2016-05-19 2016-07-20 北京神雾环境能源科技集团股份有限公司 Oil shale pyrolysis and catalytic cracking system
WO2018176883A1 (en) * 2017-03-28 2018-10-04 唐毓 Carbonization reactor

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