WO2019104651A1 - 一种富氧燃烧双室锅炉系统 - Google Patents

一种富氧燃烧双室锅炉系统 Download PDF

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Publication number
WO2019104651A1
WO2019104651A1 PCT/CN2017/113977 CN2017113977W WO2019104651A1 WO 2019104651 A1 WO2019104651 A1 WO 2019104651A1 CN 2017113977 W CN2017113977 W CN 2017113977W WO 2019104651 A1 WO2019104651 A1 WO 2019104651A1
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Prior art keywords
combustion
chamber
fuel
flue gas
heat exchange
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PCT/CN2017/113977
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English (en)
French (fr)
Inventor
张深根
张柏林
刘波
黎琳
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北京科技大学
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Priority to US16/335,676 priority Critical patent/US20210333018A1/en
Publication of WO2019104651A1 publication Critical patent/WO2019104651A1/zh

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    • 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
    • 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
    • F23C9/003—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
    • F23L7/007—Supplying oxygen or oxygen-enriched air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/0027—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/0063—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters using solid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/187—Water-storage heaters using solid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/38—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water contained in separate elements, e.g. radiator-type element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
    • 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 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/20—Premixing fluegas with fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/07005—Injecting pure oxygen or oxygen enriched air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L2900/00—Special arrangements for supplying or treating air or oxidant for combustion; Injecting inert gas, water or steam into the combustion chamber
    • F23L2900/15043—Preheating combustion air by heat recovery means located in the chimney, e.g. for home heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2221/00—Pretreatment or prehandling
    • F23N2221/08—Preheating the air
    • 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
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the invention relates to an oxy-combustion double chamber boiler system, belonging to the fields of thermal engineering and mechanical manufacturing.
  • improving fuel burn-up rate and boiler thermal efficiency and reducing NOx, SO 2 and CO 2 emission concentrations are the problems to be solved in boiler design.
  • Oxygen-enriched combustion mode can improve the fuel burn-up rate by increasing the concentration of combustion-supporting oxygen. At the same time, it can enrich CO 2 by flue gas recirculation, which is beneficial to the capture of terminal CO 2 and is a good boiler improvement method.
  • the high combustion temperature of oxyfuel combustion exacerbates the generation of thermal NOx, which greatly increases the NOx combustion emission concentration.
  • the corrosion of the furnace, the heating surface and the flue gas pipeline will be intensified due to NOx and SO 2 problems.
  • Patent (CN105605562A) discloses a flue gas circulation system for an oxy-combustion boiler, which optimizes the efficiency of the oxy-combustion boiler by adjusting the position of the oxygen injector to adjust the ratio of oxygen to flue gas; however, this patent does not Mention NOx emissions issues.
  • the patent (CN105276605A) provides a combustion method for a coal-fired boiler and a combustion boiler, which generates CO by introducing water vapor into the main combustion zone of the furnace to reduce NOx, thereby achieving the purpose of reducing the NOx emission concentration, but this method will result in a CO emission concentration. The rise of the effect is the decline in the burnout rate.
  • Patent (CN103953921B) discloses an oxyfuel combustion boiler system and an operation method thereof, which prevent the enrichment of NOx and SO 2 in the flue gas circulation process by arranging a denitration and desulfurization device in the tail flue gas passage, and improve the oxygen injection method by adjusting the oxygen injection method. CO 2 enrichment concentration; this method adopts the problem of controlling NOx and SO 2 in the tail flue gas, and the NOx generation problem in the oxyfuel combustion process still exists, and the engineering complicated investment is large.
  • the present invention provides an oxy-combustion double-chamber boiler system, which has a combustion chamber and a heat exchange chamber, and uses pure oxygen as a combustion-supporting gas, which simultaneously solves the problem of improving combustion efficiency and reducing NOx combustion emission concentration.
  • An oxy-combustion double-chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber for generating high-temperature flue gas for fuel oxyfuel combustion and for heating high-temperature flue gas with heated surface or water-cooled pipeline a heat exchange chamber for performing heat exchange; a heat chamber is disposed at an upper portion of the combustion chamber, and a high temperature flue gas port is disposed between the combustion chamber and the heat exchange chamber; and the combustion chamber is capable of satisfying the high temperature requirement of pure oxygen combustion, and The heat exchange chamber can realize efficient heat exchange of the boiler.
  • the combustion control system uses CO 2 and/or flue gas recirculation to assist in conveying fuel while being equipped with a flue gas circulation pipeline; capable of regulating CO 2 and flue gas ratio, fuel and purity according to combustion effects in the combustion chamber Oxygen-assisted gas ratio;
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the combustor is coupled to the combustion chamber, and both the pure oxygen injector and the fuel injector are coupled to the combustor.
  • the combustion control system is equipped with a flue gas circulation pipe while conveying the fuel by using CO 2 , which ensures the safety of the fuel to be delivered, and can adjust the proportion of the flue gas circulation as needed.
  • a nozzle is disposed in a middle portion of the combustion chamber, the nozzle is disposed on a wall of the combustion chamber, and the nozzles are horizontally symmetrically arranged at the same horizontal plane, and 3-6 nozzles are disposed at the same horizontal plane; an inner layer of the combustion chamber wall It is a high-temperature refractory material, the middle is a heat insulating material, and the outer layer is a structural material; the lower part of the combustion chamber is provided with a ash hopper.
  • the heat exchange chamber communicates with the combustion chamber through the high temperature flue gas port; a heat exchange chamber flue gas port is disposed at a top end of the heat exchange chamber; and an external heat utilization of the flue gas port of the heat exchange chamber is provided a space; an inner surface of the heat exchange chamber is provided with a heat receiving surface, and a water cooling pipe is disposed in the middle of the heat exchange chamber.
  • an economizer is disposed in the waste heat utilization space; an end of the waste heat utilization space is provided with an exhaust gas outlet, and the exhaust gas outlet is connected to the preheater.
  • the primary air and the secondary air are separately transported, and the burner injects the primary air and the secondary air into the combustion chamber;
  • the secondary air is pure oxygen.
  • part or all of the primary air is exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, enters the fuel injector, and the primary wind carries the fuel into the air. burner;
  • the primary air is all carbon dioxide, and the carbon dioxide passes through the preheater and enters the fuel injector, and the primary wind carries the fuel into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the internal passage of the burner is arranged in a concentric circle structure, including a combustion gas passage and a fuel passage, the combustion gas passage and the fuel passage are isolated from each other; the primary wind carrying fuel is injected into the combustion chamber through the fuel passage, and twice The wind enters the combustion chamber through the combustion gas passage.
  • combustion control system further includes a probe for automatically monitoring oxygen, carbon dioxide concentration and temperature, and is capable of regulating the ratio of CO 2 to flue gas, the ratio of fuel to pure oxygen assist gas according to the combustion effect in the combustion chamber.
  • the combustion chamber in the oxy-combustion double chamber boiler system of the present invention satisfies the high temperature requirement of pure oxygen combustion, and achieves deep burnout of the fuel;
  • the oxy-combustion double chamber boiler system of the invention has an independent heat exchange chamber, thereby realizing efficient heat exchange of the boiler;
  • the combustion control system of the oxy-combustion double chamber boiler system of the present invention uses CO 2 and flue gas recirculation to assist in conveying fuel, thereby ensuring safe fuel transportation and efficient enrichment of CO 2 .
  • FIG. 1 is a schematic view of an oxygen-enriched coal-fired dual-chamber boiler system according to an embodiment of the present invention
  • FIG. 2 is a schematic view showing the arrangement of concentric circles in the internal passage of the burner in the embodiment of the present invention
  • an oxy-combustion dual-chamber boiler system includes a furnace body 01 and a combustion control system; the furnace body 01 includes a combustion chamber 02 and a heat exchange chamber 03, and the combustion chamber 02 is a horizontal combustion chamber, lying The upper part of the combustion chamber is the heat exchange chamber 03.
  • Combustion chamber 02 A high temperature flue gas port 10 is provided between the heat exchange chamber 03 and the heat exchange chamber 03.
  • the combustion control system includes a combustor 04, a pure oxygen injector 08, and a fuel injector 09.
  • the bottom of the combustion chamber is provided with a ash bucket 11, three nozzles 05 are arranged in the middle, and a high temperature smoke port 10 is arranged on the top.
  • the spouts are arranged horizontally symmetrically, that is to say form an equilateral triangle arrangement.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber 03 is connected to the combustion chamber 02 by the high temperature flue gas port 10, the inner wall is arranged with the heating surface, the water cooling pipe is arranged in the middle, the flue gas port 15 of the heat exchange chamber is provided at one end, and the waste heat utilization space is provided outside the flue gas port 15 of the heat exchange chamber. 20, an economizer is arranged in the middle; a tail gas outlet 14 is provided at the end of the waste heat utilization space, and the exhaust gas outlet is connected to the preheater 13.
  • the primary air and the secondary air are separately transported, and the burner 04 injects the primary air and the secondary air into the combustion chamber 02;
  • the primary wind For the wind carrying fuel, the secondary air is pure oxygen;
  • a part of the primary air is the exhaust gas discharged from the waste heat utilization space 20, and the exhaust gas discharged from the waste heat utilization space 20 passes through the preheater 13 and is separated by the flue gas to enter the fuel injector 09, and the primary air is further Part of the carbon dioxide, carbon dioxide through the preheater 13 into the fuel injector 09, the primary wind carrying fuel injector 09 fuel into the burner 04;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater 13 and enters the burner 04 through the pure oxygen injector 08.
  • the internal passage of the burner 04 is arranged in a concentric circle structure, and includes a fuel passage 202 and a combustion gas passage 201.
  • the combustion gas passage 201 is disposed outside the fuel passage 202.
  • the two are concentric structures; the fuel passage 202 and the combustion gas passage 201 are isolated from each other; the primary wind carrying fuel is injected into the combustion chamber 02 through the fuel passage 202, and the secondary air enters the combustion chamber through the combustion gas passage 201. .
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion dual-chamber boiler system includes a furnace body and a combustion control system; the furnace body includes a combustion chamber and a heat exchange chamber, the combustion chamber is a horizontal combustion chamber, and the upper portion of the horizontal combustion chamber is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is provided with a heating surface, and a water-cooled pipe is arranged in the middle, and one end is provided
  • the flue gas port is provided with a waste heat utilization space outside the flue gas port of the heat exchange chamber, and an economizer and a heat exchanger are arranged in the middle; a tail gas outlet is arranged at the end of the waste heat utilization space, and the exhaust gas outlet is connected with the preheater.
  • the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber;
  • the primary air is a fuel carrying The wind is the pure air;
  • the primary air is all exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, and enters the fuel injector.
  • the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the burner includes a fuel passage and an oxygen passage, and the fuel passage and the oxygen passage are arranged side by side, the primary wind carrying fuel enters the combustor through the fuel passage, and the secondary air enters the combustor through the oxygen passage.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a horizontal combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer is arranged in the middle; The end of the space is provided with an exhaust gas outlet, and the exhaust gas outlet is connected to the preheater.
  • the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber;
  • the primary air is a fuel carrying Wind
  • the secondary air is pure oxygen;
  • the primary wind is all carbon dioxide, the carbon dioxide passes through the preheater and enters the fuel injector, and the primary wind carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a horizontal combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system package Including burners, pure oxygen injectors and fuel injectors.
  • the spouts are arranged horizontally symmetrically.
  • the inner layer of the combustion chamber wall is a high temperature refractory material, the middle is a heat insulating material, and the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer and heat exchanger are arranged in the middle a waste gas outlet is provided at the end of the waste heat utilization space, and the exhaust gas outlet is connected to the preheater.
  • the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber;
  • the primary air is a fuel carrying The wind is the pure air;
  • the part of the primary air is the exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, and enters the fuel injection.
  • the other part of the primary wind is carbon dioxide, and the carbon dioxide passes through the preheater and enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a horizontal combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer is arranged in the middle; The end of the space is provided with an exhaust gas outlet, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • the primary air is exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner. ;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a horizontal combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer and heat exchanger are arranged in the middle a waste gas outlet is provided at the end of the waste heat utilization space, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • the primary air is all carbon dioxide, and the carbon dioxide passes through the preheater and enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a horizontal combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer is arranged in the middle; The end of the space is provided with an exhaust gas outlet, and the exhaust gas outlet is connected to the preheater.
  • the burner 04 in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, and the burner 04 injects the primary air and the secondary air into the combustion chamber 02; the primary wind For the wind carrying fuel, the secondary air is pure oxygen;
  • a part of the primary air is exhaust gas discharged from the waste heat utilization space 20, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, and enters the fuel injector, and the other part of the primary air is carbon dioxide.
  • the carbon dioxide enters the fuel injector through the preheater, and the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a horizontal combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer and heat exchanger are arranged in the middle a waste gas outlet is provided at the end of the waste heat utilization space, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • the primary air is exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner. ;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a vertical combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer is arranged in the middle; The end of the space is provided with an exhaust gas outlet, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • the primary air is all carbon dioxide, and the carbon dioxide passes through the preheater and enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a vertical combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer and heat exchanger are arranged in the middle a waste gas outlet is provided at the end of the waste heat utilization space, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • a part of the primary air is exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, and enters the fuel injector, and another part of the primary wind is carbon dioxide. After passing through the preheater, the carbon dioxide enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a vertical combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is provided with a heating surface, and a water-cooled pipe is arranged in the middle, and one end is provided
  • the flue gas port is provided with a waste heat utilization space outside the flue gas port of the heat exchange chamber, and an economizer is arranged in the middle; a tail gas outlet is arranged at the end of the waste heat utilization space, and the exhaust gas outlet is connected with the preheater.
  • the burner 04 in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, and the burner 04 injects the primary air and the secondary air into the combustion chamber 02; the primary wind For the wind carrying fuel, the secondary air is pure oxygen;
  • the primary air is exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner. ;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a vertical combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer and heat exchanger are arranged in the middle a waste gas outlet is provided at the end of the waste heat utilization space, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • the primary air is all carbon dioxide, and the carbon dioxide passes through the preheater and enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a vertical combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer is arranged in the middle; The end of the space is provided with an exhaust gas outlet, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • a part of the primary air is exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, and enters the fuel injector, and another part of the primary wind is carbon dioxide. After passing through the preheater, the carbon dioxide enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a vertical combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer and heat exchanger are arranged in the middle a waste gas outlet is provided at the end of the waste heat utilization space, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • the primary air is exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner. ;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower portion It is a vertical combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer is arranged in the middle; The end of the space is provided with an exhaust gas outlet, and the exhaust gas outlet is connected to the preheater.
  • the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber;
  • the primary air is a fuel carrying The wind is the pure air;
  • the primary air is all exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, and enters the fuel injector.
  • the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.
  • An oxy-combustion double chamber boiler system comprising a furnace body and a combustion control system; the furnace body comprises a combustion chamber and a heat exchange chamber, and the lower part is a vertical combustion chamber and the upper part is a heat exchange chamber.
  • a high temperature flue gas port is arranged between the combustion chamber and the heat exchange chamber.
  • the combustion control system includes a combustor, a pure oxygen injector, and a fuel injector.
  • the inner layer of the combustion chamber wall is a high temperature refractory material
  • the middle is a heat insulating material
  • the outer layer is a structural material.
  • the heat exchange chamber is connected to the combustion chamber by a high-temperature flue gas port, the inner wall is arranged with a heating surface, a water-cooled pipe is arranged in the middle, and a flue gas port is arranged at one end; a waste heat utilization space is arranged outside the flue gas port of the heat exchange chamber, and an economizer and heat exchanger are arranged in the middle a waste gas outlet is provided at the end of the waste heat utilization space, and the exhaust gas outlet is connected to the preheater.
  • the burner in order to prevent an explosion from occurring, the primary air and the secondary air are separately transported, the burner injecting the primary air and the secondary air into the combustion chamber; the primary air is a fuel carrying Wind, the secondary air is pure oxygen;
  • a part of the primary air is exhaust gas discharged from the waste heat utilization space, and the exhaust gas discharged from the waste heat utilization space passes through the preheater, is separated by the flue gas, and enters the fuel injector, and another part of the primary wind is carbon dioxide. After passing through the preheater, the carbon dioxide enters the fuel injector, and the primary air carries the fuel of the fuel injector into the burner;
  • the secondary air is standard pure oxygen, and the standard pure oxygen passes through the preheater and enters the burner through a pure oxygen injector.
  • the combustion control system has automatic monitoring of oxygen, carbon dioxide concentration and temperature probes, and regulates the ratio of CO 2 to flue gas and the ratio of fuel to pure oxygen assisted gas according to the combustion effect.

Abstract

一种富氧燃烧双室锅炉系统，包括炉体(01)和燃烧控制系统；炉体(01)内部包括用于燃料富氧燃烧产生高温烟气的燃烧室(02)和用于将高温烟气进行换热的换热室(03)；换热室(03)设置在燃烧室(02)的上部，燃烧室(02)和换热室(03)之间设有高温烟气口(10)；采用纯氧助燃，燃烧室(02)能够满足纯氧助燃的耐高温需求，且换热室(03)能够实现锅炉高效换热。

Description

一种富氧燃烧双室锅炉系统 技术领域
本发明涉及一种富氧燃烧双室锅炉系统，属于热能工程和机械制造领域。
背景技术
煤炭和石油是全球最重要的燃料，占全球能源消费的60％以上。2016年，中国煤炭消费量为18.87亿吨油当量，其中电力工业是煤炭消耗的主要产业，每年占据煤炭消耗比例的50％左右。化石能源消耗以燃烧为主，其中面临两个问题，一是能源利用率，二是污染物排放。在锅炉领域，提高燃料燃尽率和锅炉热效率，降低NOx、SO2和CO2排放浓度等是锅炉设计所要解决的难题。
富氧燃烧方式由于提高了助燃氧浓度，可以提高燃料的燃尽率，同时通过烟气再循环可富集CO2，有利于末端CO2的捕集，是一种良好的锅炉改进方式。然而，富氧燃烧的燃烧温度高，加剧了热力型NOx的生成，使得NOx燃烧排放浓度极大增加；同时由于NOx和SO2问题，炉膛、受热面和烟气管道的腐蚀也将加剧。
专利(CN105605562A)公开了一种富氧燃烧锅炉的烟气循环系统，通过调整注氧器位置以实现调节氧气与烟气比例，达到富氧燃烧锅炉效率的最佳化；然而，此专利中未提及NOx排放问题。专利(CN105276605A)提供了一种燃煤锅炉及燃烧锅炉的燃烧方法，通过向炉膛主燃区引入水蒸气而生成CO以还原NOx，达到降低NOx排放浓度的目的，但此方法将导致CO排放浓度的升高，效果的本质是燃尽率的下降。专利(CN103953921B)公开了一种富氧燃烧锅炉系统及其运行方法，通过在尾部烟气道布置脱硝和脱硫装置防止烟气循环过程NOx和SO2的富集问题，以及通过调整注氧方式提高CO2富集浓度；此方法采取在尾部烟气控制NOx和SO2问题，富氧燃烧过程NOx生成问题仍然存在，且工程复杂投资大。
综上所述，传统富氧燃烧方式面临一个矛盾，即提高燃烧效率与降低NOx排放浓度之间的矛盾。
发明内容
针对上述技术问题，本发明提供一种富氧燃烧双室锅炉系统，具备燃烧室和换热室，采用纯氧作为助燃气体，将同时解决提高燃烧效率并降低NOx燃烧排放浓度的难题。
本发明是通过以下技术方案实现的：
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；所述炉体内部包括用于燃料富氧燃烧产生高温烟气的燃烧室和用于将高温烟气与受热面或水冷管道进行换热的换热室；所述换 热室设置在所述燃烧室的上部，所述燃烧室和所述换热室之间设有高温烟气口；采用纯氧助燃，所述燃烧室能够满足纯氧助燃的耐高温需求，且所述换热室能够实现锅炉高效换热。
进一步地，所述燃烧控制系统采用CO2和/或烟气再循环协助输送燃料，同时配备烟气循环管道；能够根据所述燃烧室中的燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例；所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。所述燃烧器与所述燃烧室连接，所述纯氧注入器和燃料注入器均与所述燃烧器连接。燃烧控制系统在采用CO2输送燃料的同时还配备了烟气循环管道，即保证了输送燃料的安全性，又可根据需要调节烟气循环比例。
进一步地，所述燃烧室中部设有喷口，所述喷口设置在燃烧室壁上，所述喷口在同一水平面水平对称布置，在同一水平面设置3-6个喷口；所述燃烧室壁的内层为高温耐火材料，中间为隔热材料，外层为结构材料；所述燃烧室的下部设置有灰斗。
进一步地，所述换热室通过所述高温烟气口连通所述燃烧室；在所述换热室的顶端设置换热室烟气口；所述换热室烟气口的外部设置余热利用空间；所述换热室的内壁设置受热面，在所述换热室的中间设置水冷管道。
进一步地，在所述余热利用空间内设置省煤器；所述余热利用空间的末端设有尾气出口，所述尾气出口与预热器连接。
进一步地，在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧。
进一步地，所述一次风的一部分或全部为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，一次风携带燃料进入燃烧器；
当所述一次风的一部分为所述余热利用空间排出的尾气时，所述一次风的另一部分为二氧化碳，尾气和二氧化碳经预热器后进入燃料注入器，一次风携带燃料进入燃烧器；或
所述一次风全部为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
进一步地，所述燃烧器内部通道采用同心圆结构布置，包括助燃气通道和燃料通道，所述助燃气通道和燃料通道相互隔离；一次风携带燃料经所述燃料通道喷入燃烧室，二次风经所述助燃气通道进入燃烧室。
进一步地，所述燃烧控制系统还包括自动监测氧气、二氧化碳浓度和温度的探头，能够根据燃烧室中的燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
本发明的有益技术效果：
1)本发明所述富氧燃烧双室锅炉系统中的燃烧室满足了纯氧助燃的耐高温需求，实现了燃料的深度燃尽；
2)本发明所述富氧燃烧双室锅炉系统中的具备独立换热室，实现了锅炉高效换热；
3)本发明所述富氧燃烧双室锅炉系统中的采用纯氧助燃，避免了N2引入燃烧室，杜绝了热力型NOx的生成，降低了NOx燃烧排放浓度；
4)本发明所述富氧燃烧双室锅炉系统中所述燃烧控制系统采用CO2和烟气再循环协助输送燃料，既保证燃料输送安全，又可实现CO2高效富集。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本发明的一部分但不是全部，不构成对本发明的不当限定。
图1为本发明实施例中富氧燃煤双室锅炉系统示意图；
图2本发明实施例中所述燃烧器内部通道采用同心圆结构设置示意图；
附图标记：01-炉体；02-燃烧室；03-换热室；04-燃烧器；05-喷口；06-受热面；07-燃烧室壁；08-纯氧注入器；09-燃料注入器；10-高温烟气口；11-灰斗；12-水冷管道；13-预热器；14-尾气出口；15-换热室烟气口；16-燃料供应设备；17、18、19-风机；20-余热利用空间；21-省煤器；201-助燃气通道；202-燃料通道。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细描述。应当理解，此处所描述的具体实施例仅仅用于解释本发明，并不用于限定本发明。
相反，本发明涵盖任何由权利要求定义的在本发明的精髓和范围上做的替代、修改、等效方法以及方案。进一步，为了使公众对本发明有更好的了解，在下文对本发明的细节描述中，详尽描述了一些特定的细节部分。对本领域技术人员来说没有这些细节部分的描述也可以完全理解本发明。
实施例1
如图1所示，一种富氧燃烧双室锅炉系统，包括炉体01和燃烧控制系统；炉体01包括燃烧室02和换热室03，所述燃烧室02为卧式燃烧室，卧式燃烧室上部为换热室03。燃烧室02 与换热室03之间设有高温烟气口10。所述燃烧控制系统包括燃烧器04、纯氧注入器08和燃料注入器09。
燃烧室底部设有灰斗11，中部设有3个喷口05，顶部设有高温烟气口10。所述喷口为水平对称布置，即构成正三角形布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室03由高温烟气口10连通燃烧室02，内壁布置受热面，中间设有水冷管道，一端设有换热室烟气口15；换热室烟气口15外设有余热利用空间20，中间布置省煤器；余热利用空间的末端设有尾气出口14，所述尾气出口连接预热器13。
在所述燃烧器04中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器04将所述一次风和二次风喷入所述燃烧室02；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风的一部分为所述余热利用空间20排出的尾气，所述余热利用空间20排出的尾气经预热器13后，经过烟气分离，进入燃料注入器09，所述一次风的另一部分为二氧化碳，二氧化碳经预热器13后进入燃料注入器09，一次风携带燃料注入器09的燃料进入燃烧器04；
所述二次风为标准纯氧，所述标准纯氧经过预热器13后，通过纯氧注入器08进入燃烧器04。如图2所述，在本实施例中，所述燃烧器04内部通道采用同心圆结构布置，包括燃料通道202和助燃气通道201，所述助燃气通道201设置于所述燃料通道202外部，两者为同心圆结构；所述燃料通道202和助燃气通道201相互隔离；一次风携带燃料经所述燃料通道202喷入燃烧室02，二次风经所述助燃气通道201进入燃烧室02。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例2
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，所述燃烧室为卧式燃烧室，卧式燃烧室的上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有3个喷口，顶部设有高温烟气口。所述喷口为水平对称布置，即构成正三角形布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有 烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器和换热器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。
在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；所述一次风全部为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
在本实施例中，所述燃烧器包括燃料通道和氧气通道，燃料通道和氧气通道并列排列，一次风携带燃料通过所述燃料通道进入燃烧器，二次风通过所述氧气通道进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例3
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为卧式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有4个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。
在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；所述一次风的全部为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例4
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为卧式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包 括燃烧器、纯氧注入器和燃料注入器。燃烧室底部设有灰斗，中部设有4个喷口，顶部设有高温烟气口。所述喷口为水平对称布置，。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器和换热器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。
在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；所述一次风的一部分为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，所述一次风的另一部分为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例5
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为卧式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有5个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风全部为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例6
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为卧式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有5个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器和换热器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风的全部为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例7
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为卧式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有6个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器04中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器04将所述一次风和二次风喷入所述燃烧室02；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风的一部分为所述余热利用空间20排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，所述一次风的另一部分为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例8
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为卧式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有6个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器和换热器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风全部为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例9
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为立式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有3个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风的全部为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例10
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为立式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有3个喷口，顶部设有高温烟气口。所述喷口为水平对称布置，即构成正三角形布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器和换热器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风的一部分为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，所述一次风的另一部分为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例11
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为立式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有4个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有 烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器04中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器04将所述一次风和二次风喷入所述燃烧室02；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风全部为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例12
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为立式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有4个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器和换热器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风的全部为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例13
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为立式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有5个喷口，顶部设有高温烟气口。所述喷口为水平 对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风的一部分为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，所述一次风的另一部分为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例14
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为立式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有5个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器和换热器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风全部为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例15
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部 为立式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有6个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。
在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；所述一次风全部为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
实施例16
一种富氧燃烧双室锅炉系统，包括炉体和燃烧控制系统；炉体包括燃烧室和换热室，且下部为立式燃烧室，上部为换热室。燃烧室与换热室之间设有高温烟气口。所述燃烧控制系统包括燃烧器、纯氧注入器和燃料注入器。
燃烧室底部设有灰斗，中部设有6个喷口，顶部设有高温烟气口。所述喷口为水平对称布置。燃烧室壁内层为高温耐火材料，中间为隔热材料，外层为结构材料。
换热室由高温烟气口连通燃烧室，内壁布置受热面，中间设有水冷管道，一端设有烟气口；换热室烟气口外设有余热利用空间，中间布置省煤器和换热器；余热利用空间末端设有尾气出口，所述尾气出口连接预热器。在所述燃烧器中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器将所述一次风和二次风喷入所述燃烧室；所述一次风为携带燃料的风，所述二次风为纯氧；
所述一次风的一部分为所述余热利用空间排出的尾气，所述余热利用空间排出的尾气经预热器后，经过烟气分离，进入燃料注入器，所述一次风的另一部分为二氧化碳，二氧化碳经预热器后进入燃料注入器，一次风携带燃料注入器的燃料进入燃烧器；
所述二次风为标准纯氧，所述标准纯氧经过预热器后，通过纯氧注入器进入燃烧器。
燃烧控制系统具备自动监测氧气、二氧化碳浓度和温度探头，根据燃烧效果调控CO2 与烟气比例、燃料与纯氧助燃气比例。

Claims (9)

  1. 一种富氧燃烧双室锅炉系统，其特征在于，包括炉体(01)和燃烧控制系统；所述炉体(01)内部包括用于燃料富氧燃烧产生高温烟气的燃烧室(02)和用于将高温烟气进行换热的换热室(03)；所述换热室(03)设置在所述燃烧室(02)的上部，所述燃烧室(02)和所述换热室(03)之间设有高温烟气口(10)；采用纯氧助燃，所述燃烧室(02)能够满足纯氧助燃的耐高温需求，且所述换热室(03)能够实现锅炉高效换热。
  2. 根据权利要求1一种富氧燃烧双室锅炉系统，其特征在于，所述燃烧控制系统采用CO2和/或烟气再循环协助输送燃料，同时配备烟气循环管道；所述燃烧控制系统能够根据所述燃烧室(02)中的燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例；所述燃烧控制系统包括燃烧器(04)、纯氧注入器(08)和燃料注入器(09)。
  3. 根据权利要求2一种富氧燃烧双室锅炉系统，其特征在于，所述燃烧室(02)中部设有喷口(05)，所述喷口(05)设置在燃烧室壁(07)上，所述喷口(05)在同一水平面水平对称布置，在同一水平面设置3-6个喷口；所述燃烧室壁(07)的内层为高温耐火材料，中间为隔热材料，外层为结构材料；所述燃烧室(02)的下部设置有灰斗(11)。
  4. 根据权利要求2一种富氧燃烧双室锅炉系统，其特征在于，所述换热室(03)通过所述高温烟气口(10)连通所述燃烧室(02)；在所述换热室(03)的顶端设置换热室烟气口(15)；所述换热室烟气口(15)的外部设置余热利用空间(20)；所述换热室(03)的内壁设置受热面(06)，在所述换热室(03)的中间设置水冷管道(12)。
  5. 根据权利要求4一种富氧燃烧双室锅炉系统，其特征在于，在所述余热利用空间(20)内设置省煤器(21)；所述余热利用空间(20)的末端设有尾气出口(14)，所述尾气出口(14)与预热器(13)连接。
  6. 根据权利要求2一种富氧燃烧双室锅炉系统，其特征在于，在所述燃烧器(04)中，为了防止发生爆炸，将一次风和二次风进行隔离输送，所述燃烧器(04)将所述一次风和二次风喷入所述燃烧室(02)；所述一次风为携带燃料的风，所述二次风为纯氧。
  7. 根据权利要求6一种富氧燃烧双室锅炉系统，其特征在于，
    所述一次风的一部分或全部为所述余热利用空间(20)排出的尾气，所述余热利用空间(20)排出的尾气经预热器(13)后，经过烟气分离，进入燃料注入器(09)，一次风携带燃料进入燃烧器(04)；
    当所述一次风的一部分为所述余热利用空间(20)排出的尾气时，所述一次风的另一部分为CO2，尾气和CO2经预热器(13)后进入燃料注入器(09)，一次风携带燃料进入燃烧器(04)；或
    所述一次风全部为CO2，CO2经预热器(13)后进入燃料注入器(09)，一次风携带燃料进入燃烧器(04)；
    所述二次风为标准纯氧，所述标准纯氧经过预热器(13)后，通过纯氧注入器(08)进入燃烧器(04)。
  8. 根据权利要求7一种富氧燃烧双室锅炉系统，其特征在于，所述燃烧器(04)内部通道采用同心圆结构布置，包括助燃气通道(201)和燃料通道(202)，所述助燃气通道(201)和燃料通道(202)相互隔离；一次风携带燃料经所述燃料通道(202)喷入燃烧室(02)，二次风经所述助燃气通道(201)进入燃烧室(02)。
  9. 根据权利要求1一种富氧燃烧双室锅炉系统，其特征在于，所述燃烧控制系统还包括自动监测氧气、二氧化碳浓度和温度的探头，能够根据燃烧室中的燃烧效果调控CO2与烟气比例、燃料与纯氧助燃气比例。
PCT/CN2017/113977 2017-11-29 2017-11-30 一种富氧燃烧双室锅炉系统 WO2019104651A1 (zh)

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