CN109028123B - Coal dust-biomass boiler steam coupling transformation method - Google Patents

Coal dust-biomass boiler steam coupling transformation method Download PDF

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CN109028123B
CN109028123B CN201810748326.0A CN201810748326A CN109028123B CN 109028123 B CN109028123 B CN 109028123B CN 201810748326 A CN201810748326 A CN 201810748326A CN 109028123 B CN109028123 B CN 109028123B
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stalk
gas
generates
boiler
coal dust
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CN109028123A (en
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车鹏程
刘焱
谭舒平
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Harbin Boiler Co Ltd
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Harbin Boiler Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/02—Form or structure of the vessel
    • C12M23/04—Flat or tray type, drawers
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/02—Form or structure of the vessel
    • C12M23/10—Petri dish
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P3/00—Preparation of elements or inorganic compounds except carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
    • C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
    • C12P5/023—Methane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/06—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for completing combustion
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Zoology (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Biotechnology (AREA)
  • Biochemistry (AREA)
  • Microbiology (AREA)
  • Genetics & Genomics (AREA)
  • General Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Sustainable Development (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Treating Waste Gases (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The present invention relates to a kind of coal dust-biomass boiler steam coupling transformation methods.Standard biologic matter-coal dust coupling boiler is to generate combustion gas after stalk and rice husk air gasification, so that the exhaust gas of relatively cleaning after the burning of the biomass gasification burnings such as stalk and the harmfulness containing P, S and NOX that can be generated after secondary use gas and coal dust firing.Present invention composition includes: pulverized-coal fired boiler back-end ductwork (1), and the boiler back end ductwork is connect by pipeline with stalk fermentation system (2), and flue gas generates more pure high temperature and pressure N by reduction section, adsorbing separation section in the boiler back end ductwork2, the stalk in the stalk fermentation system generates more pure high temperature and pressure H after the fermentation gas that fermentation furnace generates is by methane reaction kettle and CO adsorption reaction kettle2, the two, which converges in, carries out industry synthetic ammonia in ammonia convertor.The present invention is for coal dust-biomass boiler steam coupling transformation method.

Description

Coal dust-biomass boiler steam coupling transformation method
Technical field:
The present invention relates to a kind of coal dust-biomass boiler steam coupling transformation methods.
Background technique:
Standard biologic matter-coal dust coupling boiler is generation combustion gas (main component N2+CO+ after stalk and rice husk air gasification CO2+H2O), Pulverized Coal fired Boiler Furnace and coal dust are passed through by gas pipeline to carry out mixing burning at burner, belong to burner hearth flue gas coupling Close, this kind of combustion system make the biomass gasification burnings such as stalk burn after relatively cleaning and can secondary use gas (high temperature N2, CO and vapor) and coal dust firing after the harmfulness atmosphere containing P, S and NOX that generates be mixed to exhaust gas, it is unified to carry out Desulphurization denitration processing, causes the waste of thermal energy and clean gas.
Meanwhile the atmosphere such as P, S can make N2And H2Catalyst iron during industry synthetic ammonia touches coal permanent failure, causes It is unable to the reality of secondary use, based on the above background condition, it would be highly desirable to design a kind of new coal powder-stalk coupled electricity-generation boiler.
Summary of the invention:
The object of the present invention is to provide a kind of coal dust-biomass boiler steam coupling transformation methods, are specifically applied to Gasifying stalk and fermentation cycle generate electricity and synthesize coal dust-biomass boiler steam coupling modification scheme of ammonia, with steam coupling side Formula is coupled instead of burner hearth flue gas.
Above-mentioned purpose is realized by following technical scheme:
A kind of method of coal dust-biomass boiler steam coupling transformation, composition includes: pulverized-coal fired boiler back-end ductwork, institute The boiler back end ductwork stated is connect by pipeline with stalk fermentation system, and flue gas is in the boiler back end ductwork by reduction Section, adsorbing separation section generate more pure high temperature and pressure N2, the stalk in the stalk fermentation system generates in fermentation furnace Fermentation gas by generating more pure high temperature and pressure H after methane reaction kettle and CO adsorption reaction kettle2, the two converges in ammino Cheng Tazhong carries out industry synthetic ammonia.
The coal dust-biomass boiler steam coupling transformation method, the coal dust-biomass boiler steam coupling Mode is steam coupling, and flue gas separation, this method comprises the following steps:
It is that combustion gas is entered inside pulverized-coal fired boiler back-end ductwork by gas pipeline first, biological fuel gas heats heating surface The vapor generated afterwards either steam water interface, the water-cooling wall upper collecting chamber of pulverized-coal fired boiler is pooled to by jet chimney, jointly By pulverized-coal fired boiler superheater, and the combustion gas that gasifying stalk generates, main component N2+CO+CO2+H2O passes through combustion product Predominantly 50%N2+38%CO2+10%H2O, the reduction section which first passes through designed burner hearth is sufficiently restored through heat touching coal to be become 50%N2The a small amount of H2 of+45%CO+, the gas using adsorbing separation section, held by crawler belt by the adsorbent that persistent pressure is adsorbed It is continuous by tail end burner hearth, adjust crawler track speeds flake hearth-tapping after abundant CO absorption in burner hearth, and discharge institute's CO absorption through decompression, be somebody's turn to do Part CO is pooled to gas pipeline and straw gasification gas again, and gold enters burner hearth as combustion gas, high temperature and pressure after separation together N2Enter ammonia convertor after temperature-adjustment pressure-adjustment, carries out industry synthetic ammonia with the H2 that other side stalk fermentation generates, output is additional Product ammonia；
The other side is the CH that stalk fermentation tank generates4, into methane reaction kettle and H2O, which sufficiently reflects, generates CO+H2, CO Adsorbing separation, which is carried out, through same procedure returns main combustible pipe road, remaining purer high temperature H2Enter ammonia convertor after temperature-adjustment pressure-adjustment With N2Industry synthetic ammonia is carried out, addition product ammonia is exported.
The utility model has the advantages that
1. the present invention is a kind of coal dust-biomass boiler steam coupling transformation method, be applied particularly to gasifying stalk and Fermentation cycle generates electricity and synthesizes coal dust-biomass boiler steam coupling modification scheme of ammonia, it is therefore intended that steam coupled modes generation For the coupling of burner hearth flue gas, coal dust firing flue gas and biological fuel gas are separately subjected to heating heating surface, steam is pooled to coal-fired pot Furnace water-cooling wall upper collecting chamber, accomplish steam summarize, tail gas separation, improve biological fuel gas burn later use rate.
Steam coupling process of the invention is to separate CO after being adsorbed, and is allowed to be pooled to gas pipeline again as fuel Supply, the high-temperature high-pressure fuel gas tail gas after absorption purification are purer N2, with stalk fermentation outside furnace and the H2 that generates after adsorbing Reaction is carried out in ammonia convertor and generates ammonia, is exported as addition product, while this method avoid the atmosphere such as P, S and CO to cause Ammonia synthesis reaction catalyst iron touching coal failure.
The present invention can make stalk participate in production by gasification and fermentation reaction two ways, greatly improve the utilization of stalk Rate；Simultaneously industry synthetic ammonia can also be carried out using high temperature and pressure tail gas N2；It is recycled using tail gas adsorption recycling CO as combustion gas The advantages that.
While the present invention makes to couple boiler increase to straw utilization rate, additionally it is possible to increase efficiency of combustion and output product kind Class is achieved many things at one stroke.
Detailed description of the invention:
Attached drawing 1 is structural schematic diagram of the invention.
Specific embodiment:
Embodiment 1:
A kind of method of coal dust-biomass boiler steam coupling transformation, composition includes: pulverized-coal fired boiler back-end ductwork 1, institute The boiler back end ductwork stated is connect by pipeline with stalk fermentation system 2, and flue gas is in the boiler back end ductwork by reduction Section, adsorbing separation section generate more pure high temperature and pressure N2, the stalk in the stalk fermentation system generates in fermentation furnace Fermentation gas by generating more pure high temperature and pressure H after methane reaction kettle and CO adsorption reaction kettle2, the two converges in ammino Cheng Tazhong carries out industry synthetic ammonia.
Embodiment 2:
According to coal dust described in embodiment 1-biomass boiler steam coupling transformation method, the coal dust-biomass Boiler Steam coupled modes are steam coupling, and flue gas separation, this method comprises the following steps:
It is that combustion gas is entered inside pulverized-coal fired boiler back-end ductwork by gas pipeline first, biological fuel gas heats heating surface The vapor generated afterwards either steam water interface, the water-cooling wall upper collecting chamber of pulverized-coal fired boiler is pooled to by jet chimney, jointly By pulverized-coal fired boiler superheater, and the combustion gas that gasifying stalk generates, main component N2+CO+CO2+H2O passes through combustion product Predominantly 50%N2+38%CO2+10%H2O, the reduction section which first passes through designed burner hearth is sufficiently restored through heat touching coal to be become 50%N2The a small amount of H2 of+45%CO+, the gas using adsorbing separation section, held by crawler belt by the adsorbent that persistent pressure is adsorbed It is continuous by tail end burner hearth, adjust crawler track speeds flake hearth-tapping after abundant CO absorption in burner hearth, and discharge institute's CO absorption through decompression, be somebody's turn to do Part CO is pooled to gas pipeline and straw gasification gas again, and gold enters burner hearth as combustion gas, high temperature and pressure after separation together N2Enter ammonia convertor after temperature-adjustment pressure-adjustment, carries out industry synthetic ammonia with the H2 that other side stalk fermentation generates, output is additional Product ammonia；
The other side is the CH that stalk fermentation tank generates4, into methane reaction kettle and H2O, which sufficiently reflects, generates CO+H2, CO Adsorbing separation, which is carried out, through same procedure returns main combustible pipe road, remaining purer high temperature H2Enter ammonia convertor after temperature-adjustment pressure-adjustment With N2Industry synthetic ammonia is carried out, addition product ammonia is exported.

Claims (1)

1. a kind of coal dust-biomass boiler steam coupling transformation method, composition includes: pulverized-coal fired boiler back-end ductwork, special Sign is: the boiler back end ductwork is connect by pipeline with stalk fermentation system, and flue gas is passed through in the boiler back end ductwork Cross reduction section, adsorbing separation section generates more pure high temperature and pressure N2, the stalk in the stalk fermentation system is fermenting The fermentation gas that furnace generates is by generating more pure high temperature and pressure H2, the two convergence after methane reaction kettle and CO adsorption reaction kettle Industry synthetic ammonia is carried out in ammonia convertor；
The coal dust-biomass boiler steam coupled modes are steam coupling, and flue gas separation, this method comprises the following steps:
It is that the combustion gas that gasifying stalk generates is entered inside pulverized-coal fired boiler back-end ductwork by gas pipeline first, gasifying stalk produces The vapor generated after raw gas heating heating surface either steam water interface, is pooled to pulverized-coal fired boiler by jet chimney Water-cooling wall upper collecting chamber, commonly through pulverized-coal fired boiler superheater, and the combustion gas that gasifying stalk generates, main component N2+CO+ CO2+H2O, is mainly 50%N2+38%CO2+10%H2O gas by combustion product, which first passes through the furnace of designed boiler The reduction section of thorax is sufficiently restored through hot catalyst becomes a small amount of H2 of 50%N2+45%CO+, which continues using adsorbing separation section The adsorbent adsorbed that pressurizes continues through tail end burner hearth by crawler belt, and adjustment crawler track speeds are in burner hearth after abundant CO absorption Flake hearth-tapping, and institute's CO absorption is discharged through decompression, part CO is pooled to the combustion gas one that gas pipeline and gasifying stalk generate again It rises and enters burner hearth and become air mixture, high temperature and pressure N2 after separation enters ammonia convertor after temperature-adjustment pressure-adjustment, and another The H2 that side stalk fermentation generates carries out industry synthetic ammonia, exports addition product ammonia；
The other side is the CH4 that stalk fermentation tank generates, and sufficiently reacts with H2O into methane reaction kettle and generates CO+H2, CO is through phase Carry out adsorbing separation with method and return gas pipeline, remaining purer high temperature H2 enter after temperature-adjustment pressure-adjustment ammonia convertor and N2 into Row industry synthetic ammonia exports addition product ammonia.
CN201810748326.0A 2018-07-10 2018-07-10 Coal dust-biomass boiler steam coupling transformation method Active CN109028123B (en)

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CN111548826B (en) * 2020-04-13 2021-07-20 哈尔滨锅炉厂有限责任公司 Biomass gas boiler transformation method for MCFC circulation loop fuel cell-biomass gas-pulverized coal coupling and ammonia synthesis

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CN1014419B (en) * 1987-07-29 1991-10-23 江西省进贤化工设备制造厂 Produce the technology of syngas for synthetic ammonia with space gas
CN101445810B (en) * 2007-11-27 2012-06-27 中国科学院过程工程研究所 Method for preparing hydrogen by fermenting biologically pretreated straw
AT511892B1 (en) * 2011-08-31 2013-07-15 Siemens Vai Metals Tech Gmbh METHOD FOR THE TREATMENT OF EXHAUST GASES FROM PLANTS FOR THE PRODUCTION OF RAW CHEMISTRY AND / OR SYNTHESEGAS
CN103602715B (en) * 2013-12-06 2016-03-30 四川蓉加川大环保工程咨询设计有限公司 Utilize straw for the method for hydrogen
CN106977369B (en) * 2016-12-15 2020-12-01 稳力(广东)科技有限公司 Device and method for combined preparation of methanol and ammonia by comprehensively utilizing electric energy

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