CN110358583A - Circulating fluidized bed boiler opens furnace system - Google Patents
Circulating fluidized bed boiler opens furnace system Download PDFInfo
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- CN110358583A CN110358583A CN201810826356.9A CN201810826356A CN110358583A CN 110358583 A CN110358583 A CN 110358583A CN 201810826356 A CN201810826356 A CN 201810826356A CN 110358583 A CN110358583 A CN 110358583A
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- coal
- gasification furnace
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- 239000007789 gas Substances 0.000 claims abstract description 160
- 238000002309 gasification Methods 0.000 claims abstract description 119
- 239000003245 coal Substances 0.000 claims abstract description 78
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 57
- 239000002817 coal dust Substances 0.000 claims abstract description 57
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003546 flue gas Substances 0.000 claims abstract description 22
- 238000000746 purification Methods 0.000 claims abstract description 16
- 239000000779 smoke Substances 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 66
- 238000009826 distribution Methods 0.000 claims description 39
- 230000008676 import Effects 0.000 claims description 19
- 239000002918 waste heat Substances 0.000 claims description 19
- 238000012797 qualification Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 32
- 230000008569 process Effects 0.000 abstract description 22
- 239000008246 gaseous mixture Substances 0.000 abstract description 20
- 238000010438 heat treatment Methods 0.000 abstract description 16
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 description 21
- 238000012545 processing Methods 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000002699 waste material Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005243 fluidization Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000000222 hyperoxic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/726—Start-up
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
- C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/86—Other features combined with waste-heat boilers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
Furnace system is opened the invention 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.It is an advantage of the current invention that the increasing temperature and pressure process of gasification furnace carries out simultaneously when carrying out opening furnace using method of the invention, 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
Technical field:
The present invention 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, can all lead to Slagging in Texaco Gasifier accident；Therefore, another pressure key is risen to from a pressure key point
When point, not requiring nothing more than rate of pressure rise is gradually reduced, while the duration maintained after arrival elevated pressures key point being required also constantly to increase
Add, to ensure that fluidized gasification furnace interior bed temperature and pressure are in controlled range, and there is preferable fluidized state；So
The boost process duration is very long, generally requires several days.The above problem can with the increase of circle fluidized-bed gasification furnace volume and
Further obvious, in general, there are cycle of operation length, serious waste of resources, stream for conventional recycle process bed gasification furnace Starting-up process
The problem of journey is complicated, difficulty is big, serious pollution environment.
Summary of the invention:
The purpose of the present invention is to provide a kind of cycle of operation it is short, reduce the wasting of resources, reduce operation difficulty, pollution remission
The circle fluidized-bed gasification furnace of environment opens furnace system.
The purpose of the present invention is implemented by following technical solution: circle fluidized-bed gasification furnace opens furnace system comprising gasification furnace,
It include distribution grid gasifying agent pipeline into coal measures system, baker gas system, flue gas purification system and smoke circulating system, the gasification furnace
With central tube gasifying agent pipeline, the coal lock united into coal measures is connect by coal dust pipeline with the coal dust import of the gasification furnace,
The preheater outlet of the baker gas system is connect by being distributed plate valve with the distribution grid gasifying agent pipeline, and the preheater goes out
Mouth is also connect with the central tube gasifying agent pipeline by center pipe valve, the cyclone separator of the flue gas purification system with it is described
The exhanst gas outlet of gasification furnace is connected to, the outlet and the compression of the smoke circulating system of the waste heat boiler of the flue gas purification system
The import of machine connects, the outlet of the circulating air pipeline of the smoke circulating 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
Air valve is recycled, the pipeline of the circulating air pipeline being exported between the coal dust pipeline is equipped with coal dust and conveys air valve, described
The pipeline of 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.
Advantages of the present invention: 1, the increasing temperature and pressure process of gasification furnace carries out simultaneously, solves in traditional gasification stove start-up method
Heating, boosting cannot carry out simultaneously, and it is long to open the furnace time, and ignition coal waste is more, and environmental pollution is serious, the low problem of the thermal efficiency；This
First by gasification furnace top temperature T in invention4450 DEG C or more are risen to, furnace top pressure P3Rise to 2.0MPa≤P3< 3.5MPa is coal
Powder, which adds, prepares；Then by top temperature T4Rise to T4=600 DEG C, furnace top pressure P3Rise to 3.0MPa≤P3< 3.5MPa, is opened
Beginning adds coal dust and builds bed；In above process, increasing temperature and pressure is fast, the reason is that being initially formed high temperature and pressure item inside gasification furnace
Part, 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
With coal dust contact probability, and then coal dust gasification reaction is accelerated, so that coal dust react the big calorimetric of releasing rapidly, accelerate heating and liter
It is pressed into journey, so that heating up, boosting, feeding intake and can carry out simultaneously；2, temperature-rise period relies primarily on baker gas, and the preheated device of baker gas adds
Enter heat exchange, the baker gas after heat exchange in gasification furnace and cyclone separator after heat and passes through flue gas after flue gas purification system is handled
Circulatory system circulating and recovering improves the baker gas thermal efficiency, reduces igniting pulverized coal consumption, saved resource, reduce enterprise
Production cost；3, increasing temperature and pressure process is shortened, the unqualified synthesis tolerance of increasing temperature and pressure process generation is reduced, reduces money
Source waste, only does emptying processing for the hyperoxic unqualified synthesis gas in part, the lower unqualified synthesis gas of remaining oxygen content
It can send to torch processing, alleviate environmental protection of enterprise load；4, using do not do the gaseous mixture of heat treatment as coal dust convey gas and
Fluidizing reagent can make coal dust in gasification furnace maintain preferable fluidized state, avoid the generation of Slagging in Texaco Gasifier accident, therefore shorten
Boost process.
Detailed description of the invention:
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains 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 distribution
Plate 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
Force snesor 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 include baker gas pipeline 3-1, preheater 3-2 and thermal medium pipeline 3-3, baker gas pipeline 3-1 into
Gas 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, and preheater 3-2's goes out
Mouth 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, and heat is situated between
Intake air temperature sensor 3-6, thermal medium valve 3-7 are successively arranged on matter pipeline 3-3, the outlet preheater 3-2 of baker gas system 3 is logical
It crosses distribution grid valve 3-8 to connect with distribution grid gasifying agent pipeline 1-8, the outlet preheater 3-2 also passes through center pipe valve 3-9 and central tube
The 1-9 connection of gasifying agent pipeline.
Flue gas purification system 4 includes cyclone separator 4-1, deduster 4-2 and waste heat boiler 4-3, cyclone separator 4-1's
Exit is equipped with flue gas pressures sensor 4-4, and the outlet of cyclone separator 4-1 is connect with the import of deduster 4-2, deduster 4-
2 outlet 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, cigarette
The cyclone separator 4-1 of gas purification system 4 is connected to the exhanst gas outlet of gasification furnace 1；The return port of cyclone separator 4-1 is by returning
Expects pipe line 4-6 is connect with the feedback outlet of gasification furnace 1, and returning charge pressure sensor 4-7, returning charge temperature are successively arranged on returning charge pipeline 4-6
Spend 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 atmospheric pressure
Sensor 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, emptying
Pipeline 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
High 10KPa 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 P3
It is promoted to P3When=3.0MPa, 2-2 is locked to 1 delivered inside coal dust of gasification furnace, until 1 inside bed of gasification furnace by coal bunker 2-1 and coal
When layer is with a thickness of 2m, gasification is conveyed into gasification furnace 1 by distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9
Agent, control gasification furnace 1 heating rate be 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 P5
When < 8.0MPa, closes blow valve 4-16, opens torch valve 4-15, synthesis gas is sent by flare line 4-11 to torch processing system
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, according to
It is secondary by deduster 4-2 dedusting, waste heat boiler 4-3 recycle heat after, obtain circulating air；Circulation air valve 5-3 is opened, circulating air is logical
Overcompression 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
1.5:10 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；Repeat aforesaid operations, by control preheater 3-2 thermal medium into
Enter the conveying capacity of amount and gaseous mixture, controlling the heating rate inside gasification furnace 1 is 25 DEG C/h, rate of pressure rise 0.2MPa/h；Directly
To 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 increasing temperature and pressure rank
Section is completed；
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
High 30KPa 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 P3
It is promoted to P3When=3.2MPa, 2-2 is locked to 1 delivered inside coal dust of gasification furnace, until 1 inside bed of gasification furnace by coal bunker 2-1 and coal
When layer is with a thickness of 2m, gasification is conveyed into gasification furnace 1 by distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9
Agent, control gasification furnace 1 heating rate be 40 DEG C/h, rate of pressure rise 0.25MPa/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 P5
When < 8.0MPa, closes blow valve 4-16, opens torch valve 4-15, synthesis gas is sent by flare line 4-11 to torch processing system
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 obtains circulating air after passing sequentially through deduster 4-2 dedusting, waste heat boiler 4-3 recycling heat；
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, circulating air
Mixed volume ratio with baker gas is 2:10, obtains gaseous mixture；Gaseous mixture, which is delivered in preheater 3-2, is heated to 100 DEG C, obtains
Gaseous mixture is preheated, preheating gaseous mixture is delivered to respectively in distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9, and
The internal temperature of gasification furnace 1 and cyclone separator 4-1 is promoted by preheating gaseous mixture；Aforesaid operations are repeated, control is passed through
The thermal medium inlet of preheater 3-2 processed and the conveying capacity of gaseous mixture, control gasification furnace 1 inside heating rate be 25 DEG C/h,
Rate of pressure rise is 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
High 50KPa 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 P3
It is promoted to P3When=3.4MPa, 2-2 is locked to 1 delivered inside coal dust of gasification furnace, until 1 inside bed of gasification furnace by coal bunker 2-1 and coal
When layer is with a thickness of 2m, gasification is conveyed into gasification furnace 1 by distribution grid gasifying agent pipeline 1-8 and central tube gasifying agent pipeline 1-9
Agent, control gasification furnace 1 heating rate be 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 P5
When < 8.0MPa, closes blow valve 4-16, opens torch valve 4-15, synthesis gas is sent by flare line 4-11 to torch processing system
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, and furnace method is opened as test with of the invention
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 method of the invention, the increasing temperature and pressure process of gasification furnace carries out simultaneously, solution
Heating, boosting cannot carry out simultaneously in certainly traditional gasification stove start-up method；It is defeated as coal dust using the gaseous mixture that does not do heat treatment
It supplies gas and fluidizing reagent, coal dust in gasification furnace can be made to maintain preferable fluidized state, avoid the generation of Slagging in Texaco Gasifier accident, contracted
Short increasing temperature and pressure process, opening furnace time length can foreshorten to 40 hours, the unqualified synthesis tolerance drop that increasing temperature and pressure process generates
Down 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 gas warp
Enter heat exchange in gasification furnace and cyclone separator after preheater heating, the baker gas after heat exchange after flue gas purification system is handled,
By smoke circulating system circulating and recovering, the baker gas thermal efficiency is improved, reduces igniting pulverized coal consumption, ignition coal waste can subtract
As little as 150 tons, resource is saved, enterprise's production cost is reduced.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
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.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112552962A (en) * | 2020-12-04 | 2021-03-26 | 陕西延长石油（集团）有限责任公司 | Multi-stage circulating gasification device and method for carbon-containing solid particles |
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