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    • 5. 发明申请
    • Oxyfuel Boiler System and Method of Retrofit of Air Fired Boiler to Oxyfuel Boiler
    • 燃煤锅炉系统及燃煤锅炉改造方法
    • US20090277363A1
    • 2009-11-12
    • US12435858
    • 2009-05-05
    • Tsuyoshi SHIBATAMasayuki TANIGUCHIHisayuki ORITAOsamu ITO
    • Tsuyoshi SHIBATAMasayuki TANIGUCHIHisayuki ORITAOsamu ITO
    • F23N1/02F23B80/02F23J15/02F23B30/00
    • F23J15/006F23C9/003F23J15/02F23J2215/20F23J2215/50F23J2900/15061F23L7/007F23L2900/07001Y02C10/04Y02E20/322Y02E20/344
    • An oxyfuel boiler system, comprising: an oxygen generator to separate oxygen from air; a coal supply unit to dry and pulverize coal; a burner having a fuel feed path for feeding pulverized coal supplied from the coal supply unit and an oxidizer feed path for feeding oxidizer; a boiler provided with the burner; an exhaust gas discharge line to discharge exhaust gas generated in the boiler into environment; an exhaust gas treatment apparatus provided in the exhaust gas discharge line, a CO2 separator provided downstream of the exhaust gas treatment apparatus in the exhaust gas discharge line to separate CO2 from the exhaust gas; an exhaust gas recirculation line including an exhaust gas tapping port provided in the exhaust gas discharge line to extract a part of the exhaust gas; andan oxygen supply line to supply the oxygen generated at the oxygen generator to the exhaust gas flowing through the exhaust gas recirculation line,wherein the exhaust gas treatment apparatus is provided with at least an SO3 removing unit and a moisture removing unit; and the exhaust gas tapping port of the exhaust gas recirculation line is disposed downstream of the exhaust gas treatment apparatus and upstream of the CO2 separator for recirculating a part of the gas extracted from the port to the coal supply unit and/or the boiler.
    • 一种氧燃料锅炉系统,包括:氧气发生器,用于将氧气与空气分离; 供煤单位干煤粉碎; 具有用于供给从供煤单元供给的粉煤的燃料供给路径和供给氧化剂的氧化剂供给路径的燃烧器; 配有燃烧器的锅炉; 用于将在锅炉中产生的废气排放到环境中的废气排放管线; 设置在废气排出管线中的废气处理装置,设置在废气排出管线中的排气处理装置的下游侧的CO 2分离器,以从废气中分离CO 2; 排气再循环管线,包括设置在排气排出管线中的排气口,用于提取废气的一部分; 以及氧气供给管线,用于将氧气发生器产生的氧气供应到流经废气再循环管线的废气,其中废气处理装置设置有至少一种除SOU装置和除湿装置; 排气再循环管线的废气排放口设置在废气处理装置的下游,CO 2分离器的上游,用于将从端口提取的一部分气体再循环到煤供给单元和/或锅炉。
    • 9. 发明授权
    • Dust coal boiler, dust coal combustion method, dust coal fuel thermal power generation system, and waste gas purification system for dust coal boiler
    • 粉尘煤锅炉,粉尘煤燃烧法,粉煤燃料热发电系统,粉尘煤锅炉废气净化系统
    • US08961170B2
    • 2015-02-24
    • US12600221
    • 2008-05-14
    • Hisayuki OritaMasayuki TaniguchiAkihito OriiYuki KamikawaHirofumi Okazaki
    • Hisayuki OritaMasayuki TaniguchiAkihito OriiYuki KamikawaHirofumi Okazaki
    • F23D1/00F23C9/00F23J15/00F23L7/00
    • F23C9/003F23D1/00F23J15/006F23J2215/60F23L7/002
    • A pulverized coal thermal power generation system that significantly reduces the amount of NOx emissions from a boiler and does not require a denitration unit is provided. When a denitration unit is not used, performance to remove mercury from a boiler waste gas is reduced. A waste gas purification system for a pulverized coal boiler, that compensates for this is provided.A pulverized coal boiler having a furnace for burning pulverized coal, burners for supplying pulverized coal and air used for combustion into the furnace so as to burn the pulverized coal in an insufficient air state and after-air ports provided on the downstream side of the burners for supplying air used for perfect combustion characterized in that, an air ratio in the furnace is 1.05 to 1.14, and the residence time of a combustion gas from the burner disposed on the uppermost stage to a main after-air port is 1.1 to 3.3 seconds. Preferably, water is mixed in advance with the air supplied from the after-air port so as to increase the specific heat. Furthermore, pulverized coal carrying air in the burner and a part of air used for combustion are mixed together in advance before they are jetted into the furnace.A waste gas purification system having a pulverized coal boiler, an air heater disposed downstream of the pulverized coal boiler for exchanging heat with a boiler waste gas to heat air used for combustion in the pulverized coal boiler, a dust removing unit, and a desulfurizing unit characterized in that, at least one of a halogen gas supply unit, a catalyst unit for oxidizing a mercury gas, and a mercury adsorbent blowing device is provided so as to oxidize mercury included in the waste gas.
    • 提供了一种粉煤发电系统,其显着地减少了来自锅炉的NOx排放量并且不需要脱硝装置。 当不使用脱硝装置时,从锅炉废气中除去汞的性能降低。 提供了一种用于粉煤锅炉的废气净化系统,用于补偿这一点。 一种粉煤锅炉,其具有用于燃烧粉煤的炉,用于将粉煤供应的燃烧器和用于燃烧的空气进入炉中,以便在不充分的空气状态下燃烧粉煤,并且设置在燃烧器的下游侧的后空气口 用于提供用于完全燃烧的空气,其特征在于,炉中的空气比为1.05至1.14,并且来自设置在最上层的燃烧器的燃烧气体的停留时间为1.1至3.3秒 。 优选地,预先将水与从后空气供给的空气混合,以增加比热。 此外,在燃烧器内携带空气的粉煤和用于燃烧的空气的一部分在喷射到炉中之前预先混合在一起。 一种具有粉煤锅炉的废气净化系统,设置在粉煤锅炉下游的空气加热器,用于与锅炉废气进行热交换,以加热用于粉煤锅炉中的燃烧的空气,除尘单元和脱硫单元 其特征在于,提供卤素气体供给单元,氧化汞气体的催化剂单元和汞吸收剂吹送装置中的至少一种,以氧化废气中所含的汞。