Dust coal boiler, dust coal combustion method, dust coal fuel thermal power generation system, and waste gas purification system for dust coal boiler
    2.
    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 有权
    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

    公开(公告)号:US08961170B2

    公开(公告)日:2015-02-24

    申请号:US12600221

    申请日:2008-05-14

    摘要: 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.

    摘要翻译: 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。

    Oxyfuel combustion boiler plant and operation method of oxyfuel combustion boiler plant
    3.
    发明授权
    Oxyfuel combustion boiler plant and operation method of oxyfuel combustion boiler plant 有权
    氧燃烧锅炉厂和氧燃烧锅炉厂的运行方法

    公开(公告)号:US08534236B2

    公开(公告)日:2013-09-17

    申请号:US12893711

    申请日:2010-09-29

    IPC分类号: F23B80/02

    摘要: An oxyfuel combustion boiler plant comprising: a boiler having an air separation unit for manufacturing oxygen by separating nitrogen from air, a burner for burning the oxygen supplied from the air separation unit and pulverized coal, and a primary system pipe for supplying the pulverized coal to the burner, exhaust gas recirculation system pipe for supplying combustion exhaust gas discharged from the boiler to the primary system pipe, a carbon dioxide capture unit for capturing carbon dioxide in the exhaust gas discharged from the boiler, the oxyfuel combustion boiler plant is further comprising: an oxygen buffer tank disposed on a downstream side of the air separation unit; an oxygen supply pipe for supplying oxygen to the primary system pipe of the burner from the oxygen buffer tank; and a nitrogen supply pipe for supplying a part of nitrogen generated from the air separation unit or an air supply pipe for supplying air from outside which is connected to the oxygen supply pipe on a downstream side of the oxygen buffer tank and on an upstream side of a junction of the primary system pipe.

    摘要翻译: 一种氧燃烧锅炉设备,包括:锅炉,具有用于通过从空气中分离氮气来制造氧气的空气分离单元,用于燃烧从空气分离单元和粉煤供应的氧气的燃烧器,以及用于将粉煤供应到主体系统管 所述燃烧器,用于从所述锅炉向所述主系统管排出的燃烧废气的排气再循环系统管,用于捕获从所述锅炉排出的废气中的二氧化碳的二氧化碳捕获单元,所述氧燃料燃烧锅炉设备还包括: 设置在所述空气分离单元的下游侧的氧缓冲罐; 用于从氧气缓冲罐向燃烧器的主系统管供氧的供氧管; 以及氮气供给管,其用于供给来自所述空气分离单元的氮气的一部分或用于从外部供给空气的空气供给管,所述空气供给管与所述氧气缓冲罐的下游侧的氧供给管连接,并且在所述供气管的上游侧 主系统管道的接头。

    Catalytic exhaust gas decomposition apparatus and exhaust gas decomposition method
    8.
    发明授权
    Catalytic exhaust gas decomposition apparatus and exhaust gas decomposition method 失效
    催化废气分解装置和废气分解方法

    公开(公告)号:US07033550B2

    公开(公告)日:2006-04-25

    申请号:US10684375

    申请日:2003-10-15

    IPC分类号: B01D50/34 A62D3/00

    CPC分类号: B01D53/885 Y02C20/30

    摘要: The catalytic exhaust gas decomposition apparatus spirals an exhaust gas containing therein a substance to be decomposed and a reactant gas, rectifies the spiral flow, and lets the substance to be decomposed contained in the exhaust gas react with the reactant gas after the spiral flow has been rectified. This arrangement rectifies the spiral flow of the exhaust gas and the reactant gas with a plate-like baffle wall having therein a through hole at a portion near the center thereof. The spiral flow is allowed to pass through the through hole so as to be centralized temporarily. The spiral flow then passes through an enlarged section of a flow path downstream of the through hole before being introduced into the catalyst bed.

    摘要翻译: 催化废气分解装置使含有分解物质的废气与反应气体螺旋化,对螺旋流进行整流,使在废气中分解的物质与螺旋流动后的反应气体反应 纠正 这种布置使排气和反应气体的螺旋流量与其中具有在其中心附近的部分处具有通孔的板状挡板整流。 允许螺旋流通过通孔,以便暂时集中。 然后,在引入催化剂床之前,螺旋流通过通孔下游的流路的扩大部分。

    Catalytic exhaust gas decomposition apparatus and exhaust gas decomposition method
    9.
    发明申请
    Catalytic exhaust gas decomposition apparatus and exhaust gas decomposition method 失效
    催化废气分解装置和废气分解方法

    公开(公告)号:US20060062705A1

    公开(公告)日:2006-03-23

    申请号:US11270550

    申请日:2005-11-10

    IPC分类号: B01D50/00

    CPC分类号: B01D53/885 Y02C20/30

    摘要: In a catalytic exhaust gas decomposition apparatus according to the preferred embodiment of the present invention, it is possible to suppress variations in velocity distribution of the gases introduced to the catalyst bed. The catalytic exhaust gas decomposition apparatus spirals an exhaust gas containing therein a substance to be decomposed and a reactant gas, rectifies the spiral flow, and lets the substance to be decomposed contained in the exhaust gas react with the reactant gas after the spiral flow has been rectified. This arrangement uses, as a means for rectifying the spiral flow of the exhaust gas and the reactant gas, a plate-like baffle wall having therein a through hole at a portion near the center thereof. The spiral flow is allowed to pass through the through hole so as to be centralized temporarily. The spiral flow then passes through an enlarged section of a flow path downstream of the through hole before being introduced into the catalyst bed. The arrangement helps minimize variations in gas velocity of the exhaust gas flowing into the catalyst bed, thereby allowing a desired decomposition rate to be obtained substantially consistently.

    摘要翻译: 在根据本发明优选实施方案的催化废气分解装置中,可以抑制引入催化剂床的气体的速度分布的变化。 催化废气分解装置使含有分解物质的废气与反应气体螺旋化,对螺旋流进行整流,使在废气中分解的物质与螺旋流动后的反应气体反应 纠正 作为用于对排气和反应气体的螺旋流进行整流的装置,使用板状挡板,其中央部附近具有通孔。 允许螺旋流通过通孔,以便暂时集中。 然后,在引入催化剂床之前,螺旋流通过通孔下游的流路的扩大部分。 这种布置有助于最小化流入催化剂床的废气的气体速度变化,从而可以基本上一致地获得所需的分解速率。