CN205974371U - Living beings pyrolysis and catalytic cracking system - Google Patents

Living beings pyrolysis and catalytic cracking system Download PDF

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Publication number
CN205974371U
CN205974371U CN201620456522.7U CN201620456522U CN205974371U CN 205974371 U CN205974371 U CN 205974371U CN 201620456522 U CN201620456522 U CN 201620456522U CN 205974371 U CN205974371 U CN 205974371U
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cracking
catalyst
pyrolysis
gas
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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel

Abstract

The utility model belongs to the technical field of the living beings pyrolysis, mainly be the living beings pyrolysis and catalytic cracking system based on the regenerative radiant tube heating, this system includes: parts such as pyrolysis hopper, a feed arrangement, pyrolysis and catalytic cracking reactor, cracking gas cyclone, spray column and gas jar, wherein, pyrolysis and catalytic cracking reactor be 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, heats effectually, and oil gas that the pyrolysis chamber produced can carry out deep cracking at splitting chamber, and the burnt oil molecules schizolysis of macromolecule be the gaseous hydrocarbons of micro molecule, and this reaction system can produce a large amount of cracking gas products, has avoided the problem of pyrolysis oil dust -laden, has really realized fossil fuel's clean high -efficient utilization.

Description

A kind of biomass pyrolytic and catalytic cracking system
Technical field
This utility model is created and is belonged to biomass pyrolytic technical field, mainly a kind of based on heat accumulation type radiant tube heating Biomass pyrolytic and catalytic cracking system, to produce cleaning combustible gas.
Background technology
Biomass energy is the fourth-largest resource of the earth, is also the maximum regenerative resource of reserves simultaneously.Biomass have distribution Extensively, the features such as rich reserves, recyclability, low stain, it is one of most potential fossil energy alternative energy source.At present, The recovery energy mode of biomass energy, mainly with fermenting and producing fuel, biogas, gasifies, fast pyrogenation, based on carbonization.Wherein, Fermenting and producing fuel, biogas mainly apply herbaceous plant, this technology long the production cycle, limit its development the shortcomings of yield is relatively low; Gasification produces gas technology then because fuel gases calorific value is low, is applied to generating, industrial supply aspect more, has certain limitation;Charcoal The product that change technology obtains mainly is applied it is difficult to substitute fossil energy scale based on solid biologic charcoal;Fast pyrogenation refers to Under conditions of anaerobic or limit oxygen, biomass are rapidly heated to 550 DEG C about, generate bio oil, charcoal and pyrolysis gas Process.Pyrolytic technique is a kind of unique technology that biomass energy is converted into liquid fuel.However, through pyrolytic technique The bio-oil components obtaining are extremely complex, make biology the shortcomings of pH value is relatively low, oxygen content is high, heat stability is poor, viscosity is big Oil is difficult to direct utilization and storage.Additionally, the last handling process of bio oil is complicated, effect on driving birds is not good and relatively costly so as to be difficult to Industrial applications.Therefore, all simple system of a kind of high-effective dust-removing, system structure and technological process that how to design becomes this area The problem of 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 biomass heat accumulating type down-flow fluidized bed using ECT and Catalytic cracking reaction system, this response system can be pyrolyzed and be cracked two kinds of operations, the oil gas that pyrolysis chamber produces, and can enter Cracking room carries out Deep catalytic cracking, the tar molecules of macromole is cracked into the gaseous hydrocarbons of small molecule, and this reactor can produce Raw substantial amounts of cracking gas, thus avoid producing the problem that pyrolysis oil is difficult by, is truly realized the clean and effective of biomass Using.
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 biomass pyrolytic 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 putting on catalyst for cracking in described cracking room;
Communication member, described communication member is arranged on the bottom of described heat-insulated brick wall, for produce described pyrolysis chamber Oil gas, by described communication member, is passed into described cracking room;Cracking gas cyclone separator, described cracking gas cyclone separator It is connected with the outlet of described cracking gas, semicoke conveyer device and spray column respectively;Spray column, described spray column and described cracking cyclone Wind separator connects;Fuel cartridge, described fuel cartridge is connected with described spray column.
Inventor finds, simple according to this response system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good, the oil gas that pyrolysis chamber produces, and can carry out deep pyrolytic, the tar molecules cracking of macromole in cracking room For the gaseous hydrocarbons of small molecule, this response system can produce substantial amounts of cracking gas product, it is to avoid the problem of pyrolysis oil dust-laden, very The clean and effective just achieving Fossil fuel utilizes.Additionally, two kinds of operations can be carried out in a body of heater, unite two into one, biomass Utilization rate is high, saves construction cost and floor space.And this reactor employ heat accumulation type radiant tube heating technique without gas, Gu heat carrier heats, while the thermal efficiency that improve reactor, simplify system process.
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;Cyclone separator is dried, it is connected with described drying device and described pyrolysis hopper respectively;Exhaust gas cleaner, its with The described cyclone separator that is dried is connected.
According to embodiment of the present utility model, catalyst-adding device can include: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. grain biomass is passed through described first Feed arrangement and described charging aperture are added in described reactor, complete to be pyrolyzed in the described pyrolysis chamber of described reactor Journey;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 described reaction The described cracking room of device;C. being pyrolyzed the oil gas of generation, to enter into described cracking indoor, and described catalyst-adding device is by catalyst It is sprayed in described cracking room, described pyrolysis oil gas completes cracking process in described cracking interior, produces cracking gas;D. described split Vent one's spleen and entered in described cracking gas cyclone separator by the outlet of described cracking gas, described cracking gas is carried out at udst separation Reason, enters described gasification furnace gas through the thin dirt that described cracking gas cyclone separator separates by described semicoke conveyer device Change;E. the cracking gas after dedusting enters in described spray column, carries out washing, purifying process to cracking gas;F. through purification Net cracking gas enters in described fuel cartridge and stores.
According to embodiment of the present utility model, in described step a, described grain biomass enters 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;Described grain biomass is by the described heat accumulation type radiant tube in described reactor pyrolysis chamber It is heated to 500-600 DEG C, in described step b, pyrolysis oil gas is added by the described heat accumulation type radiant tube in described reactor cracking room Heat arrives 600-900 DEG C, and in described step c, described catalyst is equably sprayed on described cracking by described catalyst ejector part In room;
According to embodiment of the present utility model, the granularity of described grain biomass is below 20mm.
This utility model at least has the advantages that:
1)Take heat accumulation type radiant tube moving bed process, response system structure is simple, easy to operate, uniformity of temperature profile, Heats are good;
2)The biomass of below 20mm can be processed, raw material availability is high, be suitable to promote;
3)Reactor is divided into pyrolysis chamber and cracking room, the oil gas that pyrolysis chamber produces, and can carry out Deep catalytic in cracking room and split Solution, 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 is difficult to Using problem, be truly realized biomass clean and effective utilize;
4)In cracking gas, hydrogen content is high, quality better;
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 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, feeding screw;9th, cracking gas cyclone separator;10th, spray column; 11st, combustion gas air-introduced machine;12nd, fuel cartridge;13rd, gasification furnace;14th, conveying worm;15th, catalyst hooper;16th, catalyst sprays Pipeline;17th, heat accumulation type radiant tube;18th, heat-insulated brick wall;19th, communication member;20th, catalyst supervisor;21st, catalyst arm;22、 Pyrolysis chamber;23rd, cracking room;24th, cracking gas outlet;25th, fuel gas inlet;26th, exhanst gas outlet;27th, air intake;28th, semicoke goes out Mouthful;29th, charging aperture.
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 biomass pyrolytic and catalytic cracking system.According to embodiment of the present utility model, With reference to shown in Fig. 1, this system includes:Pyrolysis hopper 5;First feed arrangement 8, described first feed arrangement and described pyrolysis hopper 5 connections;Pyrolysis and cracking reactor 3, it includes:Charging aperture 29, pyrolysis chamber 22, cracking room 23, cracking gas outlet 24, heat accumulating type Radial canal 17, heat-insulated brick wall 18, catalyst-adding device and communication member 19, wherein, described charging aperture is arranged on described pyrolysis On the roof of room, the outlet of described cracking gas is arranged on the side wall of described cracking room, described heat-insulated brick wall 18 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, and for putting in described cracking room catalyst for cracking, described communication member 19 sets Put the bottom in described heat-insulated brick wall 18, for the oil gas producing pyrolysis chamber, by described communication member, be passed into described in split Solution room;Cracking gas cyclone separator 9, described cracking gas cyclone separator is exported with described cracking gas respectively, semicoke conveyer device It is connected with spray column;Spray column 10, described spray column is connected with the outlet of described cracking gas;Fuel cartridge 12, described fuel cartridge and institute State spray column to connect.
Inventor finds, simple according to this response system structure of this utility model embodiment, easy to operate, Temperature Distribution Uniformly, heats are good, the oil gas that pyrolysis chamber produces, and can carry out deep pyrolytic, the tar molecules cracking of macromole in cracking room For the gaseous hydrocarbons of small molecule, this response system can produce substantial amounts of cracking gas product, it is to avoid the problem of pyrolysis oil dust-laden, very The clean and effective just achieving Fossil fuel utilizes.Additionally, two kinds of operations can be carried out in a body of heater, unite two into one, biomass Utilization rate is high, saves construction cost and floor space.And this reactor employ heat accumulation type radiant tube 17 heating technique need not Gas, solid heat carrier heating, simplify system process while the thermal efficiency that improve reactor.
According to specific embodiment of the utility model it is adaptable to the particle diameter of the biomass of this reactor is not particularly limited, In some preferred embodiments of the present utility model, the biomass that this reactor adopts are particle diameter 20mm particles below and powdery Fossil fuel, thus, it is possible to make full use of little particle biomass, 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, biomass are moved from top to bottom, the unidirectional heat accumulating type radiation being evenly arranged of setting in pyrolysis chamber Biomass can be broken up by pipe makes it be uniformly distributed, and biomass stop 1-50 minute in the reactor from top to bottom, and are heated to 500-600 DEG C, tube wall temperature is controlled in 500~700 DEG C of scopes using gas control valve, completes pyrolytic process, and pyrolysis produces Oil gas, by the opening of reactor lower part checker brick, enters into cracking room, is provided with the unidirectional accumulation of heat being evenly arranged in cracking room Formula radial canal, and it is heated to 600-900 DEG C, tube wall temperature is controlled in 600~900 DEG C of scopes using gas control valve, urges simultaneously Catalyst in agent adding apparatus passes through catalyst ejection passage 16 and sprays entrance cracking room, is provided with uniform cloth in cracking room The unidirectional heat accumulation type radiant tube put, completes catalytic pyrolysis process, and the tar molecules of macromole are 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, the clean and effective being truly realized biomass utilizes.According to this The embodiment of utility model, the shape of heat accumulation type radiant tube is not particularly limited, in some embodiments of the present utility model, can Think cylinder, be thus conducive to breaing up of biomass, realize mixing biomass in the reactor dispersed.
According to specific embodiment of the utility model, described cracking gas cyclone separator respectively with described cracking gas outlet, Semicoke conveyer device 14 is connected with spray column.Thus, cracking gas is exported by cracking gas, enters in cracking gas cyclone separator and removes Dirt, cracking gas after dedusting enters to wash in spray column and purifies further, simultaneously cracking gas cyclone separator separate thin Dirt, sends into gasification furnace 13 by semicoke conveyer device, and gasification gas can produce artificial natural gas, recycle, environment-friendly high-efficiency.
According to specific embodiment of the utility model, the concrete species of communication member is not particularly limited, as long as can be by Pyrolysis chamber connects with cracking room, thus the oil gas that pyrolysis chamber is produced is passed into cracking room.More of the present utility model In embodiment, when Fig. 3 is in terms of the from left to right of reactor, the front view of heat-insulated brick wall, as shown in figure 3, communication member can be Be arranged on the pore area of the inclusion porous on heat-insulated brick wall, under preferable case, the height of described pore area is 3-15cm, described hole straight Footpath is 1-3cm.Communication member can also be on heat-insulated brick wall longitudinal length, positioned at the opening of lower position, under preferable case, institute The height stating opening is 3-15cm.
According to specific embodiment of the utility model, heat-insulated brick wall is arranged in reactor it is preferred that being located at reactor horizontal stroke To at the 2/3 of width, the thickness of heat-insulated brick wall is 5-15cm, heat-insulated brick wall vertically through in reactor, by reactor Inner space is separated into pyrolysis chamber and cracking room, and this structure makes to be provided with pyrolysis chamber and cracking room in a body of heater, pyrolysis The oil gas that room produces, can enter cracking room and carry out deep pyrolytic, the tar molecules of macromole are cracked into the gaseous state of small molecule Hydro carbons, produces substantial amounts of cracking gas, thus avoiding the problem producing pyrolysis oil dust-laden.And, two can be carried out in a body of heater Plant operation, unite two into one, save construction cost and floor space.
According to embodiment of the present utility model, this system may further include:Combustion gas with heat accumulation type radiant tube respectively The gasification furnace that entrance is connected with semicoke conveyer device.Thus, it is possible to using semicoke conveyer device, pyrolysis in pyrolysis chamber is produced Semicoke is delivered in gasification furnace, carries out gasification process to semicoke, and to obtain combustible gas and lime-ash, the combustible gas obtaining can be passed through In heat accumulation type radiant tube, it is passed through air in heat accumulation type radiant tube simultaneously, so that combustible gas is burnt and the material in pyrolysis chamber is carried out Heating.Thus, it is possible to sufficiently be utilized to semicoke, do not cause to waste, good economy performance.
According to specific embodiment of the utility model, described reactor is provided with fuel gas inlet 25, air intake 27 and cigarette Gas outlet 26, 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 8;Be connected with the exhanst gas outlet on described second feed arrangement and described heat accumulation type radiant tube respectively is dry Dry device;Cyclone separator 4 is dried with described drying device and described pyrolysis hopper are connected respectively;Whirlwind is dried with described The exhaust gas cleaner 7 that separator is connected.Thus, it is possible to the biomass in loading hopper be added by the second feed arrangement dry In dry device 2, in drying device, in the flue gas of the heat accumulation type radiant tube 17 in pyrolysis chamber, (temperature is about 200 to biomass ~250 degrees Celsius) in the presence of be dried, then dried biomass and flue gas mixture enter cyclonic separation is dried Device 4, separates in flue gas (temperature is about 70~110 degrees Celsius) the entrance exhaust gas cleaner obtaining and carries out purified treatment, with reality Existing qualified 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 Biomass in loading hopper are delivered in drying device.In some embodiments of the present utility model, the second feeding dress Putting can be feeding screw 8.Thereby, it is possible to realize the Automatic Conveying to biomass, 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 biomass and the function of preheating.In some embodiments of the present utility model, drying device can be done for air-flow Dry device, thus, biomass are dried in the presence of flue gas and are lifted, and the mixture of dried biomass and flue gas is discharged Pneumatic conveyer dryer 2, 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 using heat accumulation type radiant tube 17 row The flue gas going out is dried to biomass 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, one can also be entered being dried between cyclone separator 4 and exhaust gas cleaner Step is provided with tail gas air-introduced machine 6, and tail gas air-introduced machine quickly and efficiently can will be dried the flue gas separating acquisition in cyclone separator It is delivered in exhaust gas cleaner, be conducive to improving work efficiency.
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, catalyst-adding device includes:Catalyst hooper 15;Catalyst is responsible for 20, described catalyst supervisor is connected with described catalyst hooper;Catalyst arm 21, described catalyst arm and described catalyst Supervisor is 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 inside described cracking room; Preferably, described catalyst arm is multiple and arranged parallel to each other along the length direction of described catalyst supervisor, described catalysis Agent arm is arranged on the interlayer of described heat accumulation type radiant tube 17;Preferably, described catalyst ejector part includes catalyst bleed pipe Road and the nozzle being arranged on described catalyst ejection passage 16, 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 biomass in pyrolysis hopper Deliver in reactor.In some embodiments of the present utility model, the first feed arrangement can be with feeding screw 8.Thus, It is capable of the Automatic Conveying to biomass, 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. grain biomass is 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 biomass of this reactor is not particularly limited, In some preferred embodiments of the present utility model, the biomass that this reactor adopts are particle diameter 20mm particles below and powdery Fossil fuel, thus, it is possible to make full use of little particle biomass, 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 biomass 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 8.Thereby, it is possible to realize the Automatic Conveying to biomass, 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 biology for pipe Matter is broken up makes it be uniformly distributed, and biomass stop 1-50 minute in the reactor from top to bottom, and are 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 biomass are added pyrolysis hopper, can also be in advance to biomass 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 biomass and the pre-heat treatment, by This, can remove the moisture in biomass, 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. it is pyrolyzed the described communication member by setting on the heat-insulated brick wall of described reactor for the oil gas of generation, enter into described The described cracking room of reactor.
According to specific embodiment of the utility model, heat-insulated brick wall is arranged in reactor it is preferred that being located at reactor horizontal stroke To at the 2/3 of width, the thickness of heat-insulated brick wall is 5-15cm, heat-insulated brick wall vertically through in reactor, by reactor Inner space is separated into pyrolysis chamber and cracking room, and this structure makes to be provided with pyrolysis chamber and cracking room in a body of heater, pyrolysis The oil gas that room produces, can enter cracking room and carry out deep pyrolytic, the tar molecules of macromole are cracked into the gaseous state of small molecule Hydro carbons, produces substantial amounts of cracking gas, thus avoiding the problem producing pyrolysis oil dust-laden.And, two can be carried out in a body of heater Plant operation, unite two into one, save construction cost and floor space.
According to specific embodiment of the utility model, the concrete species of communication member is not particularly limited, as long as can be by Pyrolysis chamber connects with cracking room, thus the oil gas that pyrolysis chamber is produced is passed into cracking room.More of the present utility model In embodiment, when Fig. 3 is in terms of the from left to right of reactor, the front view of heat-insulated brick wall 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.
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 cracking process in described cracking interior, produces cracking gas.
According to specific embodiment of the utility model, described cracking interior distributed at least one described heat accumulating type radiation Pipe, it is preferred that described at least one heat accumulation type radiant tube is uniformly distributed, specifically, and is heated to 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 biomass is high Effect utilizes.
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.
D. described cracking gas is entered in described cracking gas cyclone separator 9 by described cracking gas outlet, splits to described Vent one's spleen and carry out udst separation process, pass through described semicoke conveying dress through the thin dirt that described cracking gas cyclone separator 9 separates Put the described gasification furnace 13 of entrance to gasify.
According to specific embodiment of the utility model, described cracking gas cyclone separator respectively with described cracking gas outlet, Semicoke conveyer device is connected with spray column.Thus, cracking gas is exported by cracking gas, enters in cracking gas cyclone separator and removes Dirt, cracking gas after dedusting enters to wash in spray column and purifies further, simultaneously cracking gas cyclone separator separate thin Dirt, sends into gasification furnace by conveying worm, and gasification gas can produce artificial natural gas, recycle, environment-friendly high-efficiency.
E. the cracking gas after dedusting enters in described spray column, carries out washing, purifying process to cracking gas.
F. 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, and combustion gas air-introduced machine quickly and efficiently can will pass through in spray column and purify the natural of acquisition Gas is delivered in fuel cartridge and is stored, and further, the cracking gas obtaining can be further used for preparing LNG or LNP.Invention People 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, the oil gas that pyrolysis chamber produces, and can carry out deep pyrolytic, the tar molecules cracking of macromole in cracking room For the gaseous hydrocarbons of small molecule, this response system can produce substantial amounts of cracking gas product, it is to avoid the problem of pyrolysis oil dust-laden, very The clean and effective just achieving Fossil fuel utilizes.Additionally, two kinds of operations can be carried out in a body of heater, unite two into one, biomass Utilization rate is high, saves construction cost and floor space.And this reactor employ heat accumulation type radiant tube heating technique without gas, Gu heat carrier heats, while the thermal efficiency that improve reactor, simplify system process.
Below the specific work process of biomass pyrolytic of the present utility model and catalytic cracking system and method is carried out in detail Thin description, specific as follows:
First, the biomass starting material of granularity≤20mm is added in loading hopper, will be stored in using the second feed arrangement 8 and add Biomass starting material in hopper 1 adds in pneumatic conveyer dryer 2,200~250 degrees Celsius simultaneously discharging in heat accumulation type radiant tube 17 Flue gas be passed through in pneumatic conveyer dryer, biomass starting material is dried in the presence of flue gas and is lifted, then flue gas and raw material The mixture of biomass discharges pneumatic conveyer dryer, enters and is dried in cyclone separator 4, and (temperature is about 70 to separate the flue gas obtaining ~110 degrees Celsius) discharge is dried cyclone separator 4, and enter exhaust gas cleaner in the presence of tail gas air-introduced machine 6, carry out Purified treatment, purifies the flue gas emptying meeting discharge standard obtaining, is dried and separates the raw material biology obtaining in cyclone separator Matter is discharged and cyclone separator is dried, and enters in pyrolysis hopper 5, then will be stored in pyrolysis material using the first pay-off Biomass starting material 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, biomass thermally equivalent is warming up to 500~ 600 degrees Celsius, complete pyrolytic reaction, obtain being pyrolyzed oil gas and semicoke, the catalyst in catalyst hooper (includes but do not limit simultaneously It is used in mixed way in one or more of dolomite, Ni base catalyst and Fe base catalyst) pass through catalyst ejection passage 16 Uniformly it is sprayed in cracking room through nozzle through catalyst supervisor 20, catalyst arm 21 and catalyst ejector part successively, and obtain 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 its His solid impurity is delivered in gasification furnace 13 by semicoke conveyer device and carries out gasification process, and the combustible gas obtaining is passed through heat accumulating type Radial canal 17 is used for the biomass in pyrolysis reactor are heated, and the lime-ash that gasification process obtains discharges gasification furnace 13, splits Crack the cracked gas obtaining in solution room and dedusting in cracking gas cyclone separator 9 is entered by cracking gas outlet 24, after dedusting Cracking gas enters to wash in spray column 10 and purifies further, and the net cracking gas after washing is sent into fuel cartridge through combustion gas air-introduced machine 11 and deposited Storage, can be used for producing the products such as artificial natural gas, the thin dirt that cracking gas cyclone separator 9 separates simultaneously, by spiral transferring Send machine to send into gasification furnace 13 to be gasified, the gas obtaining that gasifies can be passed through pyrolysis chamber and be circulated heating utilization, after gasification Lime-ash is discharged.
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, pine sawdust is processed, the base of raw material Plinth data is shown in Table 1.
Table 1:Pine sawdust basic data
Process pine sawdust using this response system, the gas products yield obtaining is 68%, and pyrolytic tar almost all cracks For gaseous products, factor of created gase height.
It is to be understood that term " first ", " second " are only used for describing purpose in description of the present utility model, and It is not intended that instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define The feature of " first ", " second " can be expressed or implicitly include one or more this feature.
In this utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " Gu Fixed " etc. term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral;Can be It is mechanically connected or electrically connect;Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis Concrete condition understands concrete meaning in this utility model for the above-mentioned term.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score Can be the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, first is special Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " permissible Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term State that be not necessarily referring to is identical embodiment or example.And, the specific features of description, structure, material or feature can be Combine in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area The feature of the different embodiments described in this specification or example and different embodiment or example can be carried out by technical staff In conjunction with and combination.
Although of the present utility model embodiment has been shown and described above it is to be understood that above-described embodiment is Exemplary it is impossible to be interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model Interior above-described embodiment can be changed, change, replacing and modification, simultaneously for one of ordinary skill in the art, foundation The thought of the application, all will change in specific embodiments and applications.

Claims (6)

1. a kind of biomass pyrolytic 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 sets Put 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;
Cracking gas cyclone separator, described cracking gas cyclone separator respectively with described cracking gas outlet, semicoke conveyer device and Spray column is connected;
Spray column, described spray column is connected with described cracking gas cyclone separator;
Fuel cartridge, described fuel cartridge is connected with described spray column.
2. system according to claim 1 is it is characterised in that described communication member is to be arranged on described heat-insulated brick wall Pore area including multiple holes;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 described 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;
Cyclone separator is dried, it is connected with described drying device and described pyrolysis hopper respectively;
Exhaust gas cleaner, it is connected with the described cyclone separator that is dried.
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;Further comprise semicoke outlet, it is arranged on the bottom of described pyrolysis chamber, described semicoke Outlet is connected with described semicoke conveyer device.
CN201620456522.7U 2016-05-19 2016-05-19 Living beings pyrolysis and catalytic cracking system Active CN205974371U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778950A (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 Biomass pyrolysis and catalytic cracking system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105778950A (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 Biomass pyrolysis and catalytic cracking system

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