CN208700993U - Circle fluidized-bed gasification furnace opens furnace system - Google Patents

Circle fluidized-bed gasification furnace opens furnace system Download PDF

Info

Publication number
CN208700993U
CN208700993U CN201821190856.XU CN201821190856U CN208700993U CN 208700993 U CN208700993 U CN 208700993U CN 201821190856 U CN201821190856 U CN 201821190856U CN 208700993 U CN208700993 U CN 208700993U
Authority
CN
China
Prior art keywords
pipeline
furnace
gas
coal
gasification furnace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201821190856.XU
Other languages
Chinese (zh)
Inventor
张刚
刘海建
霍学斌
吴松怡
隋盈鑫
李军明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xinneng Energy Co Ltd
Original Assignee
Xinneng Energy Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xinneng Energy Co Ltd filed Critical Xinneng Energy Co Ltd
Priority to CN201821190856.XU priority Critical patent/CN208700993U/en
Application granted granted Critical
Publication of CN208700993U publication Critical patent/CN208700993U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • Y02P20/10Process efficiency

Landscapes

  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Furnace system is opened the utility model discloses a kind of circle fluidized-bed gasification furnace, and system includes gasification furnace, into coal measures system, baker gas system, flue gas purification system and smoke circulating system.The utility model has the advantage of when carrying out opening furnace using the method for the utility model, the increasing temperature and pressure process of gasification furnace carries out simultaneously, and solving heating, boosting in traditional gasification stove start-up method cannot carry out simultaneously;Gaseous mixture not do heat treatment conveys gas and fluidizing reagent as coal dust, coal dust in gasification furnace can be made to maintain preferable fluidized state, avoid the generation of Slagging in Texaco Gasifier accident, shorten increasing temperature and pressure process, open furnace length of time, unqualified synthesis tolerance is low, reduces the wasting of resources, alleviates environmental protection of enterprise load;Temperature-rise period relies primarily on baker gas, and the baker gas thermal efficiency is high, reduces igniting pulverized coal consumption, reduces enterprise's production cost.

Description

Circle fluidized-bed gasification furnace opens furnace system
Technical field:
The utility model relates to coal chemical technology, in particular to a kind of circle fluidized-bed gasification furnace opens furnace system.
Background technique:
Currently, fluidized bed gasifying process has the gasification of coal pressurized catalysis, ash agglomerating and tri- kinds of U-gas, it is all made of traditional baking Furnace, which heat up-feeds intake, to be built the three-stage of bed-system boosting and opens furnace mode, and heating, boost process are both needed in strict accordance with requiring It carries out.Tradition opens furnace mode, and there are the following problems: 1, baker process: conventional method baker is fired using liquefied petroleum gas or natural gas The flue gas generated after burning is as heat source, and furnace temperature rises to 850 DEG C by room temperature and about needs for 24 hours, and time-consuming for temperature-rise period;2, it feeds intake and builds bed Layer process: after furnace temperature rises to 580 DEG C, starting to be passed through gasifying agent into furnace and put into coal dust, since coal dust own temperature is low, throws Furnace temperature reduction is directly resulted in after entering in furnace, causes coal gasification reaction that can not be normally carried out;Therefore, the coal dust of this stage investment, one Part burning is wanted with participation gasification reaction since furnace temperature furnace pressure cannot reach gasification reaction for improving furnace temperature, another part It asks, is not fully vaporized prior, can only discharge out of the furnace with synthesis gas, and lead to that synthesis gas quality is low, high oxygen content, after cannot be introduced into Continuous workshop section send to torch processing and easily explodes, therefore can only be emitted into atmosphere, not only serious waste resource, and causes Pollute environment;3, it boost process: before boost process starts, needs first to carry out heat tightly to equipment and pipeline, guarantees equipment and pipeline Air-tightness, pressure is gradually then risen into scheduled pressure value from normal pressure according to the actual situation, due to (general in sel key point At 1.0MPa, 2.0MPa, 3.0MPa), acute variation can occur for furnace charge fluidisation state in furnace, once generate unstable flow pattern Or situations such as local overheating, it can all lead to Slagging in Texaco Gasifier accident;Therefore, another pressure is risen to from a pressure key point to close When key point, rate of pressure rise is not required nothing more than and is gradually reduced, while requiring the duration maintained after arrival elevated pressures key point continuous yet Increase, to ensure that fluidized gasification furnace interior bed temperature and pressure are in controlled range, and there is preferable fluidized state;Institute With the boost process duration is very long, generally requires several days.The above problem can be with the increase of circle fluidized-bed gasification furnace volume And it is further obvious, in general, conventional recycle process bed gasification furnace Starting-up process there are cycle of operation length, serious waste of resources, The problem of process is complicated, difficulty is big, serious pollution environment.
Utility model content:
The purpose of this utility model is to provide a kind of cycle of operation it is short, reduce the wasting of resources, reduce operation difficulty, alleviate The circle fluidized-bed gasification furnace of pollution environment opens furnace system.
The purpose of this utility model is implemented by following technical solution: circle fluidized-bed gasification furnace opens furnace system comprising gas Change furnace, into coal measures system, baker gas system, flue gas purification system and smoke circulating system, the gasification furnace includes distribution grid gasification Agent pipeline and central tube gasifying agent pipeline, the coal lock united into coal measures pass through the coal dust import of coal dust pipeline and the gasification furnace The preheater outlet of connection, the baker gas system is connect by being distributed plate valve with the distribution grid gasifying agent pipeline, described pre- Hot device outlet is also connect by center pipe valve with the central tube gasifying agent pipeline, the cyclone separator of the flue gas purification system It is connected to the exhanst gas outlet of the gasification furnace, the outlet of the waste heat boiler of the flue gas purification system and the smoke circulating system Compressor import connection, the outlet of the circulating air pipeline of the smoke circulating system respectively with baker gas pipeline, the coal Tube cell line, distribution grid gasifying agent pipeline connection, the pipe of the circulating air pipeline being exported between the baker gas pipeline Road is equipped with circulation air valve, and the pipeline of the circulating air pipeline being exported between the coal dust pipeline is equipped with coal dust and conveys gas The pipeline of valve, the circulating air pipeline being exported between the distribution grid gasifying agent pipeline is equipped with cycle gasification valve.
Further, described to include coal bunker, coal lock and the coal dust pipeline into coal measures system, the outlet of the coal bunker is logical It crosses down coal valve and is connect with the import that the coal is locked, the outlet of the coal lock is connect with the coal dust pipeline, on the coal dust pipeline It is successively arranged produce coal valve and coal feeding valve.
Further, the baker gas system includes the baker gas pipeline, the preheater and thermal medium pipeline, described Baker gas pipeline inlet end is equipped with baker air valve, and the outlet of the baker gas pipeline is connect with the air inlet of the preheater, institute The outlet for stating preheater is equipped with baker air pressure force snesor, and the thermal medium inlet of the preheater goes out with the thermal medium pipeline Mouth connects, and is successively arranged intake air temperature sensor, thermal medium valve on the thermal medium pipeline.
Further, the flue gas purification system includes the cyclone separator, deduster and waste heat boiler, the whirlwind The exit of separator is equipped with flue gas pressures sensor, and the outlet of the cyclone separator is connect with the import of the deduster, The outlet of the deduster is connect with the import of the waste heat boiler, and the outlet of the waste heat boiler is passed equipped with synthesis gas temperature Sensor.
Further, the smoke circulating system includes the compressor and the circulating air pipeline, the compressor Outlet is connect with the import of the circulating air pipeline.
Further, the outlet of the waste heat boiler is also connect with the import of synthesis gas pipeline, the synthesis gas pipeline Outlet is connect with qualified gas pipeline, flare line and blow-down pipe respectively, and the synthesis gas pipeline is equipped with synthesis atmospheric pressure and passes Sensor, the qualification gas pipeline are equipped with rough coal air valve, and the flare line is equipped with torch valve, and the blow-down pipe is equipped with Blow valve.
Further, the return port of the cyclone separator is connect by returning charge pipeline with the feedback outlet of the gasification furnace, Returning charge pressure sensor, material air-teturning temperature sensor are successively arranged on the returning charge pipeline.
Further, the upper of furnace body of the gasification furnace, middle part and lower part are respectively equipped with top temperature sensor, furnace medium temperature Sensor and bottom temperature sensor are spent, is respectively equipped with furnace body pressure sensing on the gas chamber of the gasification furnace and its furnace body of top The furnace body top of device and air chamber pressure sensor, the gasification furnace is equipped with furnace top pressure sensor;The distribution grid gasifying agent pipe Line is equipped with distribution grid gasifying agent pressure sensor, and the central tube gasifying agent pipeline is sensed equipped with central tube gasifying agent pressure Device.
The advantages of the utility model: 1, the increasing temperature and pressure process of gasification furnace carries out simultaneously, solves traditional gasification stove start-up side It heats up in method, boost and cannot carry out simultaneously, it is long to open the furnace time, and ignition coal waste is more, and environmental pollution is serious, the low difficulty of the thermal efficiency Topic;First by gasification furnace top temperature T in the utility model4450 DEG C or more are risen to, furnace top pressure P3Rise to 2.0MPa≤P3< 3.5MPa is added for coal dust and is prepared;Then by top temperature T4Rise to T4=600 DEG C, furnace top pressure P3Rise to 3.0MPa≤P3 < 3.5MPa starts to add coal dust and builds bed;In above process, increasing temperature and pressure is fast, the reason is that being initially formed inside gasification furnace High-temperature and high-pressure conditions, again pulverized coal conveying, under high-temperature and high-pressure conditions, density of gas phase increases in gasification furnace internal unit volume, increases Gasifying agent and coal dust contact probability are added, and then have accelerated coal dust gasification reaction, has reacted coal dust rapidly and release big calorimetric, accelerate Heating and boosting process, so that heat up, boost, feeding intake and can carry out simultaneously;2, temperature-rise period relies primarily on baker gas, baker gas Enter heat exchange, the baker gas after heat exchange in gasification furnace and cyclone separator after preheated device heating to handle through flue gas purification system Afterwards, by smoke circulating system circulating and recovering, the baker gas thermal efficiency is improved, igniting pulverized coal consumption is reduced, has saved resource, Reduce enterprise's production cost;3, increasing temperature and pressure process is shortened, the unqualified synthesis gas of increasing temperature and pressure process generation is reduced Amount, reduces the wasting of resources, the hyperoxic unqualified synthesis gas in part is only done emptying processing, remaining oxygen content is lower not Qualified synthesis gas can be sent to torch processing, alleviate environmental protection of enterprise load;4, not do the gaseous mixture of heat treatment as coal Powder conveys gas and fluidizing reagent, and coal dust in gasification furnace can be made to maintain preferable fluidized state, avoid the hair of Slagging in Texaco Gasifier accident It is raw, therefore shorten boost process.
Detailed description of the invention:
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic diagram of embodiment 1.
Gasification furnace 1, top temperature sensor 1-1, temperature sensor 1-2, bottom temperature sensor 1-3, gas chamber 1- in furnace 4, furnace body pressure sensor 1-5, air chamber pressure sensor 1-6, furnace top pressure sensor 1-7, distribution grid gasifying agent pipeline 1-8, Central tube gasifying agent pipeline 1-9, distribution grid gasifying agent pressure sensor 1-10, central tube gasifying agent pressure sensor 1-11, into Coal measures system 2, coal bunker 2-1, coal locks 2-2, and coal dust pipeline 2-3, lower coal valve 2-4, produce coal valve 2-5, coal feeding valve 2-6, baker gas system 3, baker gas pipeline 3-1, preheater 3-2, thermal medium pipeline 3-3, baker air valve 3-4, baker air pressure force snesor 3-5, air inlet Temperature sensor 3-6, thermal medium valve 3-7 are distributed plate valve 3-8, center pipe valve 3-9, flue gas purification system 4, cyclone separator 4- 1, deduster 4-2, waste heat boiler 4-3, flue gas pressures sensor 4-4, synthesis gas temperature sensor 4-5, returning charge pipeline 4-6 are returned Expect pressure sensor 4-7, material air-teturning temperature sensor 4-8, synthesis gas pipeline 4-9, qualified gas pipeline 4-10, flare line 4-11, Blow-down pipe 4-12, synthesis gas pressure sensor 4-13, rough coal air valve 4-14, torch valve 4-15, blow valve 4-16, flue gas recirculation System 5, compressor 5-1, circulating air pipeline 5-2 recycle air valve 5-3, and coal dust conveys air valve 5-4, cycle gasification valve 5-5.
Specific embodiment:
Embodiment 1:
As shown in Figure 1, circle fluidized-bed gasification furnace opens furnace system comprising gasification furnace 1, unite into coal measures 2, baker gas system 3, flue gas purification system 4 and smoke circulating system 5,
Upper of furnace body, middle part and the lower part of gasification furnace 1 be respectively equipped with top temperature sensor 1-1, temperature sensor in furnace Furnace body pressure sensor is respectively equipped on 1-2 and bottom temperature sensor 1-3, the gas chamber 1-4 of gasification furnace 1 and its furnace body of top The furnace body top of 1-5 and air chamber pressure sensor 1-6, gasification furnace 1 are equipped with furnace top pressure sensor 1-7;Gasification furnace 1 includes point Fabric swatch gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9, distribution grid gasifying agent pipeline 1-8 are equipped with distribution grid gasifying agent Pressure sensor 1-10, central tube gasifying agent pipeline 1-9 are equipped with central tube gasifying agent pressure sensor 1-11.
The outlet for including coal bunker 2-1, coal lock 2-2 and coal dust pipeline 2-3, coal bunker 2-1 into coal measures system 2 passes through lower coal valve 2-4 It is connect with the import of coal lock 2-2, the outlet of coal lock 2-2 is connect with coal dust pipeline 2-3, is successively arranged and is produced coal on coal dust pipeline 2-3 Valve 2-5 and coal feeding valve 2-6, the coal lock 2-2 into coal measures system 2 are connect by coal dust pipeline 2-3 with the coal dust import of gasification furnace 1.
Baker gas system 3 includes baker gas pipeline 3-1, preheater 3-2 and thermal medium pipeline 3-3, baker gas pipeline 3-1 Inlet end is equipped with baker air valve 3-4, and the outlet of baker gas pipeline 3-1 is connect with the air inlet of preheater 3-2, preheater 3-2's Outlet is equipped with baker air pressure force snesor 3-5, and the thermal medium inlet of preheater 3-2 is connect with the outlet of thermal medium pipeline 3-3, heat Intake air temperature sensor 3-6, thermal medium valve 3-7, the outlet preheater 3-2 of baker gas system 3 are successively arranged on medium pipeline 3-3 It is connect by distribution plate valve 3-8 with distribution grid gasifying agent pipeline 1-8, the outlet preheater 3-2 also passes through center pipe valve 3-9 and center Pipe gasifying agent pipeline 1-9 connection.
Flue gas purification system 4 includes cyclone separator 4-1, deduster 4-2 and waste heat boiler 4-3, cyclone separator 4-1 Exit be equipped with flue gas pressures sensor 4-4, the outlet of cyclone separator 4-1 connect with the import of deduster 4-2, deduster The outlet of 4-2 is connect with the import of waste heat boiler 4-3, and the outlet of waste heat boiler 4-3 is equipped with synthesis gas temperature sensor 4-5, The cyclone separator 4-1 of flue gas purification system 4 is connected to the exhanst gas outlet of gasification furnace 1;The return port of cyclone separator 4-1 passes through Returning charge pipeline 4-6 is connect with the feedback outlet of gasification furnace 1, and returning charge pressure sensor 4-7, returning charge are successively arranged on returning charge pipeline 4-6 Temperature sensor 4-8.
The outlet of waste heat boiler 4-3 is also connect with the import of synthesis gas pipeline 4-9, the outlet difference of synthesis gas pipeline 4-9 It is connect with qualified gas pipeline 4-10, flare line 4-11 and blow-down pipe 4-12, synthesis gas pipeline 4-9 is equipped with synthesis air pressure Force snesor 4-13, qualified gas pipeline 4-10 are equipped with rough coal air valve 4-14, and flare line 4-11 is equipped with torch valve 4-15, puts Blank pipe line 4-12 is equipped with blow valve 4-16.
The import of the compressor 5-1 of the outlet and smoke circulating system 5 of the waste heat boiler 4-3 of flue gas purification system 4 is connect, Smoke circulating system 5 include compressor 5-1 and circulating air pipeline 5-2, compressor 5-1 outlet and circulating air pipeline 5-2 into Mouth connection;The outlet of the circulating air pipeline 5-2 of smoke circulating system 5 respectively with baker gas pipeline 3-1, coal dust pipeline 2-3, distribution The pipeline of plate gasifying agent pipeline 1-8 connection, circulating air pipeline 5-2 being exported between baker gas pipeline 3-1 is equipped with circulating air The pipeline of valve 5-3, circulating air pipeline 5-2 being exported between coal dust pipeline 2-3 is equipped with coal dust and conveys air valve 5-4, circulating air The pipeline of pipeline 5-2 being exported between distribution grid gasifying agent pipeline 1-8 is equipped with cycle gasification valve 5-5.
Embodiment 2:
Furnace method is opened using the circle fluidized-bed gasification furnace that embodiment 1 carries out, which is characterized in that it specifically includes following step It is rapid:
The baker increasing temperature and pressure stage: baker gas is nitrogen;Baker gas is delivered to preheater 3- by baker gas pipeline 3-1 It is heated to 100 DEG C in 2, obtains pre- heat drying furnace gas;Distribution plate valve 3-8 and center pipe valve 3-9 is opened, by the conveying point of pre- heat drying furnace gas Not in distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9, by pre- heat drying furnace gas to gasification furnace 1 and whirlwind The internal temperature of separator 4-1 is promoted;Pre- heat drying furnace gas with after gasification furnace 1 and cyclone separator 4-1 heat exchange, successively leads to After crossing deduster 4-2 dedusting, waste heat boiler 4-3 recycling heat, circulating air is obtained;Circulation air valve 5-3 is opened, circulating air passes through pressure Contracting machine 5-1 is delivered to baker gas pipeline 3-1 and is mixed with baker gas, and the mixed volume ratio of circulating air and baker gas is 1:10, Obtain gaseous mixture;Gaseous mixture, which is delivered in preheater 3-2, is heated to 100 DEG C, obtains preheating gaseous mixture, and preheating gaseous mixture difference is defeated It send to distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9, and by preheating gaseous mixture to gasification furnace 1 and rotation The internal temperature of wind separator 4-1 is promoted;Repeat aforesaid operations, by control preheater 3-2 thermal medium inlet and The conveying capacity of gaseous mixture, controlling the heating rate inside gasification furnace 1 is 25 DEG C/h, rate of pressure rise 0.2MPa/h;Until gasification The top temperature T of furnace 14It is promoted to T4=450 DEG C, furnace top pressure P3It is promoted to P3=2.0MPa, baker increasing temperature and pressure stage are complete At;
It builds the bed preparation stage: after the completion of the baker increasing temperature and pressure stage, closing circulation air valve 5-3, gasified by distribution grid Agent pipeline 1-8 persistently conveys pre- heat drying furnace gas into gasification furnace 1, is continued by central tube gasifying agent pipeline 1-9 into gasification furnace 1 Convey circulating air;Coal locks pressurising inside 2-2, until the internal pressure of the gas chamber 1-4 of the built-in pressure ratio gasification furnace 1 of coal lock 2-2 is high When 200KPa, produce coal valve 2-5, coal feeding valve 2-6 and coal dust conveying air valve 5-4 are opened, gas is conveyed using circulating air as coal dust, is adjusted Coal dust conveys air valve 5-4 aperture, keeps the internal pressure pressure of the gas chamber 1-4 of the built-in pressure ratio gasification furnace 1 of coal dust pipeline 2-3 The high 10KPa of power builds the completion of bed preparation stage;
It builds the bed stage: building after the completion of the bed preparation stage, as top temperature T4It is promoted to T4=600 DEG C, furnace top pressure P3It is promoted to P3When=3.0MPa, 2-2 is locked to 1 delivered inside coal dust of gasification furnace, until inside gasification furnace 1 by coal bunker 2-1 and coal When thickness of bed layer is 2m, gas is conveyed into gasification furnace 1 by distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9 Agent, the heating rate of control gasification furnace 1 are 30 DEG C/h, rate of pressure rise 0.2MPa/h;During this, circulating air is used as fluidisation Agent simultaneously stablizes top temperature T4=600 DEG C, pre- heat drying furnace gas maintains the fluidized state of the coal dust in gasification furnace 1 as fluidizing reagent; When thickness of bed layer in gasification furnace 1 continues to increase, close distribution plate valve 3-8, center pipe valve 3-9, stop pre- heat drying furnace gas and The conveying of circulating air;
Synthesis gas processing stage: in building bed phase process, after closing circulation air valve 5-3, to maintain furnace top pressure P3 Stabilization, need to gasification furnace 1 generate synthesis gas handle;As synthesis gas pipeline 4-9 pressure P5When > 8.0MPa, open Blow valve 4-16 carries out emptying processing to synthesis gas;When the oxygen content of synthesis gas is greater than 0.1%, synthesis gas pipeline 4-9 pressure P5When < 8.0MPa, blow valve 4-16 being closed, opening torch valve 4-15, synthesis gas is sent by flare line 4-11 to torch processing System;When the oxygen content of synthesis gas is less than or equal to 0.1%, synthesis gas pipeline 4-9 pressure P5When >=2.5MPa, torch valve 4- is closed 15, rough coal air valve 4-14 is opened, synthesis gas is delivered to methanol-fueled CLC workshop section by qualification gas pipeline 4-10.
Embodiment 3:
Furnace method is opened using the circle fluidized-bed gasification furnace that embodiment 1 carries out, which is characterized in that it specifically includes following step It is rapid:
The baker increasing temperature and pressure stage: baker gas is carbon dioxide;Baker gas is delivered to preheating by baker gas pipeline 3-1 It is heated to 100 DEG C in device 3-2, obtains pre- heat drying furnace gas;Distribution plate valve 3-8 and center pipe valve 3-9 is opened, pre- heat drying furnace gas is defeated It send respectively in distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9, by pre- heat drying furnace gas to 1 He of gasification furnace The internal temperature of cyclone separator 4-1 is promoted;Pre- heat drying furnace gas after exchanging heat with gasification furnace 1 and cyclone separator 4-1, After passing sequentially through deduster 4-2 dedusting, waste heat boiler 4-3 recycling heat, circulating air is obtained;Open circulation air valve 5-3, circulating air It is delivered to baker gas pipeline 3-1 by compressor 5-1 to be mixed with baker gas, the mixed volume ratio of circulating air and baker gas is 1.5:10 obtaining gaseous mixture;Gaseous mixture, which is delivered in preheater 3-2, is heated to 100 DEG C, obtains preheating gaseous mixture, pre- hot mixing Gas is delivered to respectively in distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9, and by preheating gaseous mixture to gasification The internal temperature of furnace 1 and cyclone separator 4-1 are promoted;Aforesaid operations are repeated, by the thermal medium for controlling preheater 3-2 The conveying capacity of inlet and gaseous mixture, controlling the heating rate inside gasification furnace 1 is 25 DEG C/h, rate of pressure rise 0.2MPa/h; Until the top temperature T of gasification furnace 14It is promoted to T4=500 DEG C, furnace top pressure P3It is promoted to P3=3.0MPa, baker heating rise The pressure stage completes;
It builds the bed preparation stage: after the completion of the baker increasing temperature and pressure stage, closing circulation air valve 5-3, gasified by distribution grid Agent pipeline 1-8 persistently conveys pre- heat drying furnace gas into gasification furnace 1, is continued by central tube gasifying agent pipeline 1-9 into gasification furnace 1 Convey circulating air;Coal locks pressurising inside 2-2, until the internal pressure of the gas chamber 1-4 of the built-in pressure ratio gasification furnace 1 of coal lock 2-2 is high When 500KPa, produce coal valve 2-5, coal feeding valve 2-6 and coal dust conveying air valve 5-4 are opened, gas is conveyed using circulating air as coal dust, is adjusted Coal dust conveys air valve 5-4 aperture, keeps the internal pressure pressure of the gas chamber 1-4 of the built-in pressure ratio gasification furnace 1 of coal dust pipeline 2-3 The high 30KPa of power builds the completion of bed preparation stage;
It builds the bed stage: building after the completion of the bed preparation stage, as top temperature T4It is promoted to T4=600 DEG C, furnace top pressure P3It is promoted to P3When=3.2MPa, 2-2 is locked to 1 delivered inside coal dust of gasification furnace, until inside gasification furnace 1 by coal bunker 2-1 and coal When thickness of bed layer is 2m, gas is conveyed into gasification furnace 1 by distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9 Agent, the heating rate of control gasification furnace 1 are 40 DEG C/h, rate of pressure rise 0.25MPa/h;During this, circulating air is used as stream Agent simultaneously stablizes top temperature T4=600 DEG C, pre- heat drying furnace gas maintains the fluidisation shape of the coal dust in gasification furnace 1 as fluidizing reagent State;When thickness of bed layer in gasification furnace 1 continues to increase, distribution plate valve 3-8, center pipe valve 3-9 are closed, pre- heat drying furnace gas is stopped With the conveying of circulating air;
Synthesis gas processing stage: in building bed phase process, after closing circulation air valve 5-3, to maintain furnace top pressure P3 Stabilization, need to gasification furnace 1 generate synthesis gas handle;As synthesis gas pipeline 4-9 pressure P5When > 8.0MPa, open Blow valve 4-16 carries out emptying processing to synthesis gas;When the oxygen content of synthesis gas is greater than 0.1%, synthesis gas pipeline 4-9 pressure P5When < 8.0MPa, blow valve 4-16 being closed, opening torch valve 4-15, synthesis gas is sent by flare line 4-11 to torch processing System;When the oxygen content of synthesis gas is less than or equal to 0.1%, synthesis gas pipeline 4-9 pressure P5When >=2.5MPa, torch valve 4- is closed 15, rough coal air valve 4-14 is opened, synthesis gas is delivered to methanol-fueled CLC workshop section by qualification gas pipeline 4-10.
Embodiment 4:
Furnace method is opened using the circle fluidized-bed gasification furnace that embodiment 1 carries out, which is characterized in that it specifically includes following step It is rapid:
The baker increasing temperature and pressure stage: baker gas is the nitrogen and carbon dioxide mixed in any proportion;Pass through baker tracheae Baker gas is delivered in preheater 3-2 and is heated to 100 DEG C by line 3-1, obtains pre- heat drying furnace gas;Distribution plate valve 3-8 is opened in Heart pipe valve 3-9 leads to by the conveying of pre- heat drying furnace gas respectively in distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9 Pre- heat drying furnace gas is crossed to promote the internal temperature of gasification furnace 1 and cyclone separator 4-1;With gasification furnace 1 and cyclone separator Pre- heat drying furnace gas after 4-1 heat exchange is recycled after passing sequentially through deduster 4-2 dedusting, waste heat boiler 4-3 recycling heat Gas;Circulation air valve 5-3 is opened, circulating air is delivered to baker gas pipeline 3-1 by compressor 5-1 and is mixed with baker gas, followed The mixed volume ratio of ring gas and baker gas is 2:10, obtains gaseous mixture;Gaseous mixture, which is delivered in preheater 3-2, is heated to 100 DEG C, Preheating gaseous mixture is obtained, preheating gaseous mixture is delivered to distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9 respectively It is interior, and the internal temperature of gasification furnace 1 and cyclone separator 4-1 is promoted by preheating gaseous mixture;Aforesaid operations are repeated, are led to The thermal medium inlet of control preheater 3-2 and the conveying capacity of gaseous mixture are crossed, controlling the heating rate inside gasification furnace 1 is 25 DEG C/h, rate of pressure rise 0.2MPa/h;Until the top temperature T of gasification furnace 14It is promoted to T4=650 DEG C, furnace top pressure P3It is promoted To P3=3.4MPa, baker increasing temperature and pressure stage complete;
It builds the bed preparation stage: after the completion of the baker increasing temperature and pressure stage, closing circulation air valve 5-3, gasified by distribution grid Agent pipeline 1-8 persistently conveys pre- heat drying furnace gas into gasification furnace 1, is continued by central tube gasifying agent pipeline 1-9 into gasification furnace 1 Convey circulating air;Coal locks pressurising inside 2-2, until the internal pressure of the gas chamber 1-4 of the built-in pressure ratio gasification furnace 1 of coal lock 2-2 is high When 700KPa, produce coal valve 2-5, coal feeding valve 2-6 and coal dust conveying air valve 5-4 are opened, gas is conveyed using circulating air as coal dust, is adjusted Coal dust conveys air valve 5-4 aperture, keeps the internal pressure pressure of the gas chamber 1-4 of the built-in pressure ratio gasification furnace 1 of coal dust pipeline 2-3 The high 50KPa of power builds the completion of bed preparation stage;
It builds the bed stage: building after the completion of the bed preparation stage, as top temperature T4It is promoted to T4=600 DEG C, furnace top pressure P3It is promoted to P3When=3.4MPa, 2-2 is locked to 1 delivered inside coal dust of gasification furnace, until inside gasification furnace 1 by coal bunker 2-1 and coal When thickness of bed layer is 2m, gas is conveyed into gasification furnace 1 by distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9 Agent, the heating rate of control gasification furnace 1 are 60 DEG C/h, rate of pressure rise 0.3MPa/h;During this, circulating air is used as fluidisation Agent simultaneously stablizes top temperature T4=600 DEG C, pre- heat drying furnace gas maintains the fluidized state of the coal dust in gasification furnace 1 as fluidizing reagent; When thickness of bed layer in gasification furnace 1 continues to increase, close distribution plate valve 3-8, center pipe valve 3-9, stop pre- heat drying furnace gas and The conveying of circulating air;
Synthesis gas processing stage: in building bed phase process, after closing circulation air valve 5-3, to maintain furnace top pressure P3 Stabilization, need to gasification furnace 1 generate synthesis gas handle;As synthesis gas pipeline 4-9 pressure P5When > 8.0MPa, open Blow valve 4-16 carries out emptying processing to synthesis gas;When the oxygen content of synthesis gas is greater than 0.1%, synthesis gas pipeline 4-9 pressure P5When < 8.0MPa, blow valve 4-16 being closed, opening torch valve 4-15, synthesis gas is sent by flare line 4-11 to torch processing System;When the oxygen content of synthesis gas is less than or equal to 0.1%, synthesis gas pipeline 4-9 pressure P5When >=2.5MPa, torch valve 4- is closed 15, rough coal air valve 4-14 is opened, synthesis gas is delivered to methanol-fueled CLC workshop section by qualification gas pipeline 4-10.
Embodiment 5:
Furnace mode is opened as control group using conventional three-stage described in background technology, is in the furnace method that opens of the utility model Test group, carries out the comparison for opening furnace duration, igniting Coal-fired capacity, unqualified synthesis tolerance etc., and comparing result is as shown in table 1.
1 two groups of comparing results of table
Group Open furnace duration Igniting Coal-fired capacity Igniting coal-fired cost Unqualified synthesis tolerance
Control group 101 hours 500 tons 250000 yuan 3500000 NM3
Test group 40 hours 150 tons 7.5 ten thousand yuan 400000 NM3
As shown in Table 1, when carrying out opening furnace using the method for the utility model, the increasing temperature and pressure process of gasification furnace simultaneously into Row, solving heating, boosting in traditional gasification stove start-up method cannot carry out simultaneously;Not do the gaseous mixture of heat treatment as coal Powder conveys gas and fluidizing reagent, and coal dust in gasification furnace can be made to maintain preferable fluidized state, avoid the hair of Slagging in Texaco Gasifier accident It is raw, increasing temperature and pressure process is shortened, opening furnace time length can foreshorten to 40 hours, the unqualified synthesis gas that increasing temperature and pressure process generates Amount is reduced to 400,000 NM3, the wasting of resources is reduced, environmental protection of enterprise load is alleviated;Temperature-rise period relies primarily on baker gas, baker Enter heat exchange, the baker gas after heat exchange in gasification furnace and cyclone separator after the preheated device heating of gas to handle through flue gas purification system Afterwards, by smoke circulating system circulating and recovering, the baker gas thermal efficiency is improved, reduces igniting pulverized coal consumption, ignition coal waste It can reduce to 150 tons, save resource, reduced enterprise's production cost.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (8)

1. circle fluidized-bed gasification furnace opens furnace system, which is characterized in that it include gasification furnace, into coal measures system, baker gas system, cigarette Gas purification system and smoke circulating system, the gasification furnace include distribution grid gasifying agent pipeline and central tube gasifying agent pipeline, institute It states the coal lock united into coal measures to connect by coal dust pipeline with the coal dust import of the gasification furnace, the preheater of the baker gas system Outlet connect by being distributed plate valve with the distribution grid gasifying agent pipeline, the preheater export also pass through center pipe valve with it is described The connection of central tube gasifying agent pipeline, the cyclone separator of the flue gas purification system are connected to the exhanst gas outlet of the gasification furnace, The outlet of the waste heat boiler of the flue gas purification system is connect with the import of the compressor of the smoke circulating system, the flue gas The outlet of the circulating air pipeline of the circulatory system respectively with baker gas pipeline, the coal dust pipeline, the distribution grid gasifying agent pipeline Connection, the pipeline of the circulating air pipeline being exported between the baker gas pipeline are equipped with circulation air valve, the circulating air The pipeline of pipeline being exported between the coal dust pipeline is equipped with coal dust and conveys air valve, and the circulating air pipeline is exported to institute The pipeline stated between distribution grid gasifying agent pipeline is equipped with cycle gasification valve.
2. circle fluidized-bed gasification furnace according to claim 1 opens furnace system, which is characterized in that described to include into coal measures system Coal bunker, coal lock and the coal dust pipeline, the outlet of the coal bunker is connect by lower coal valve with the import that the coal is locked, described The outlet of coal lock is connect with the coal dust pipeline, is successively arranged produce coal valve and coal feeding valve on the coal dust pipeline.
3. circle fluidized-bed gasification furnace according to claim 1 opens furnace system, which is characterized in that the baker gas system packet The baker gas pipeline, the preheater and thermal medium pipeline are included, the baker gas pipeline inlet end is equipped with baker air valve, described The outlet of baker gas pipeline is connect with the air inlet of the preheater, and the outlet of the preheater is sensed equipped with baker atmospheric pressure Device, the thermal medium inlet of the preheater are connect with the outlet of the thermal medium pipeline, are successively arranged on the thermal medium pipeline Intake air temperature sensor, thermal medium valve.
4. circle fluidized-bed gasification furnace according to claim 1 opens furnace system, which is characterized in that the flue gas purification system Including the cyclone separator, deduster and waste heat boiler, the exit of the cyclone separator is equipped with flue gas pressures sensor, The outlet of the cyclone separator connect with the import of the deduster, the outlet of the deduster and the waste heat boiler into The outlet of mouth connection, the waste heat boiler is equipped with synthesis gas temperature sensor.
5. circle fluidized-bed gasification furnace according to claim 1 opens furnace system, which is characterized in that the smoke circulating system Including the compressor and the circulating air pipeline, the outlet of the compressor is connect with the import of the circulating air pipeline.
6. circle fluidized-bed gasification furnace according to claim 4 opens furnace system, which is characterized in that the waste heat boiler goes out Mouthful also connect with the import of synthesis gas pipeline, the outlet of the synthesis gas pipeline respectively with qualified gas pipeline, flare line and put The connection of blank pipe line, the synthesis gas pipeline are equipped with synthesis gas pressure sensor, and the qualification gas pipeline is equipped with rough coal air valve, The flare line is equipped with torch valve, and the blow-down pipe is equipped with blow valve.
7. circle fluidized-bed gasification furnace according to claim 1 opens furnace system, which is characterized in that the cyclone separator Return port is connect by returning charge pipeline with the feedback outlet of the gasification furnace, is successively arranged returning charge pressure sensing on the returning charge pipeline Device, material air-teturning temperature sensor.
8. circle fluidized-bed gasification furnace according to claim 1 opens furnace system, which is characterized in that the furnace body of the gasification furnace Upper, middle and lower is respectively equipped with top temperature sensor, temperature sensor and bottom temperature sensor in furnace, the gasification Furnace body pressure sensor and air chamber pressure sensor, the furnace of the gasification furnace are respectively equipped on the gas chamber of furnace and its furnace body of top Furnace top pressure sensor is equipped at the top of body;The distribution grid gasifying agent pipeline is equipped with distribution grid gasifying agent pressure sensor, institute Central tube gasifying agent pipeline is stated equipped with central tube gasifying agent pressure sensor.
CN201821190856.XU 2018-07-25 2018-07-25 Circle fluidized-bed gasification furnace opens furnace system Active CN208700993U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821190856.XU CN208700993U (en) 2018-07-25 2018-07-25 Circle fluidized-bed gasification furnace opens furnace system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821190856.XU CN208700993U (en) 2018-07-25 2018-07-25 Circle fluidized-bed gasification furnace opens furnace system

Publications (1)

Publication Number Publication Date
CN208700993U true CN208700993U (en) 2019-04-05

Family

ID=65939879

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821190856.XU Active CN208700993U (en) 2018-07-25 2018-07-25 Circle fluidized-bed gasification furnace opens furnace system

Country Status (1)

Country Link
CN (1) CN208700993U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110305697A (en) * 2019-07-15 2019-10-08 新能能源有限公司 The control method that feeds intake of catalytic coal gasifaction
CN110358583A (en) * 2018-07-25 2019-10-22 新能能源有限公司 Circulating fluidized bed boiler opens furnace system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110358583A (en) * 2018-07-25 2019-10-22 新能能源有限公司 Circulating fluidized bed boiler opens furnace system
CN110305697A (en) * 2019-07-15 2019-10-08 新能能源有限公司 The control method that feeds intake of catalytic coal gasifaction
CN110305697B (en) * 2019-07-15 2020-11-03 新能能源有限公司 Feeding control method for catalytic coal gasification

Similar Documents

Publication Publication Date Title
CN101245264B (en) Single-bed self-heating type thermal decomposition gasification combustion reactor and thermal decomposition gasification combustion method
CN208700993U (en) Circle fluidized-bed gasification furnace opens furnace system
CN107043641B (en) Coal gasification method and device of circulating fluidized bed with fine ash return
CN108147409B (en) Production equipment for physical activation of activated carbon and application thereof
CN108504813B (en) A kind of gas-based shaft kiln directly reduced system of coal gas-and technique
CN101122388A (en) Method and device for making fluid bed to produce super high-temperature fume
CN107057768B (en) Dry coal powder gasification furnace with air preheating and steam generation functions and method thereof
CN114182052A (en) Direct reduction method and reduction system for hydrocarbon-rich gas-based shaft furnace
CN110358583A (en) Circulating fluidized bed boiler opens furnace system
CN112254529B (en) Cement kiln decomposing furnace and method for reducing nitrogen oxides
CN100498069C (en) Circulating fluid bed boiler for mixing, burning and blowing air
CN116143425B (en) Central burner type lime kiln
CN205590629U (en) Biomass gasification device and system
CN218879751U (en) Central burner type lime kiln
CN114314508B (en) Poly-generation method and system for coupling biomass baking and chemical chain conversion
CN105779009A (en) Biomass gasifying device, system and technology
CN104788999B (en) A kind of coal-tar chemistry chain pyrolysis prepares the device of carbon black
CN114350411B (en) Method and system for preparing hydrogen-rich synthetic gas by carbon-based solid fuel chemical chain reforming
CN110760342B (en) Boiler starting method of circulating fluidized bed boiler
CN109735370A (en) Pyrolysis is with gasification zoning for the device and method of hydrogen-rich synthetic gas
CN208949207U (en) A kind of fluidized-bed gasification furnace of fractional combustion
CN201066118Y (en) Circulated fluid bed boiler combusting doped blowing air
CN101987975B (en) Gas producer and gas preparation method
CN208151309U (en) A kind of fluidized bed pyrolysis device preparing high heating value biological fuel gas
CN209816043U (en) Fluidized bed gasification furnace capable of improving coal gasification efficiency

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant