Air pollution control system and method for coal combustion boiler
    2.
    发明授权
    Air pollution control system and method for coal combustion boiler 有权
    燃煤锅炉空气污染控制系统及方法

    公开(公告)号:US08088348B2

    公开(公告)日:2012-01-03

    申请号:US12863334

    申请日:2009-01-20

    摘要: An air pollution control system for a coal combustion boiler includes: a NOx removing apparatus that reduces nitrogen oxide contained in flue gas emitted from this coal combustion boiler, an air pre-heater that recovers heat in the gas, a precipitator 15 that reduces particulates from the gas, a liquid-gas contact type desulfurizer that removes sulfur oxide by way of a limestone-gypsum method and reduces mercury oxide in the gas, a stack that releases the gas after SOx removal to the exterior, and a solid-liquid separator that extracts limestone-gypsum containing slurry from the desulfurizer to the exterior and performs a solid-liquid separation, where water separated in the solid-liquid separator is removed, and concentrated slurry is sent back to the bottom of the desulfurizer to make the gypsum concentration of slurry equal to or higher than 10 percent in the desulfurizer.

    摘要翻译: 一种用于燃煤锅炉的空气污染控制系统包括:一种NOx还原装置,其减少从该燃煤锅炉排放的烟道气中含有的氮氧化物,一种在该气体中回收热量的空气预热器,一降尘器15, 该气体是通过石灰石 - 石膏法除去硫氧化物并且还原气体中的氧化汞的气液接触式脱硫器,在除去SO x之后将气体释放到外部的叠层,以及固液分离器 将含有石灰石 - 石膏的浆料从脱硫器中提取到外部,进行固液分离,在固液分离器中分离出水分,将浓缩浆液送回脱硫器底部,使石膏浓度 脱硫剂中的浆料等于或高于10%。

    AIR POLLUTION CONTROL SYSTEM AND METHOD FOR COAL COMBUSTION BOILER
    3.
    发明申请
    AIR POLLUTION CONTROL SYSTEM AND METHOD FOR COAL COMBUSTION BOILER 审中-公开
    空气污染控制系统和煤燃烧锅炉的方法

    公开(公告)号:US20100284878A1

    公开(公告)日:2010-11-11

    申请号:US12863672

    申请日:2009-01-20

    IPC分类号: B01D53/50 B01D50/00 B01D53/64

    摘要: An air pollution control system for a coal combustion boiler according to the present invention includes: a NOx removing apparatus (13) that removes nitrogen oxide contained in flue gas emitted from this coal combustion boiler (11) by adding ammonia (12) thereto, an air pre-heater (14) that recovers heat in the gas after the nitrogen oxide is removed, a precipitator (15) that reduces particulates from the gas after the heat is recovered, a gas-liquid contact type SOx removing apparatus (16) that removes sulfur oxide by way of a limestone-gypsum method and reduces mercury oxide in the gas after the particulates are reduced, and a stack (17) that releases purified gas after the sulfur and the mercury are reduced, where an oxidant is added to limestone-gypsum containing slurry (21) in or extracted from the SOx removing apparatus (16).

    摘要翻译: 根据本发明的燃煤锅炉的空气污染控制系统包括:NOx去除装置,其通过向其中加入氨(12)除去从该燃煤锅炉(11)排出的烟道气中所含的氮氧化物, 在氮氧化物除去后回收气体中的热量的空气预热器(14),在热回收后减少来自气体的微粒的除尘器(15),气液接触型SOx除去装置(16),其中 通过石灰石 - 石膏法除去硫氧化物,并且在颗粒减少之后减少气体中的氧化汞,并且在硫和汞之后释放净化气体的堆(17)减少,其中将氧化剂加入石灰石 - 含有石膏的浆料(21)在SO x去除装置(16)中或从其中提取。

    AIR POLLUTION CONTROL SYSTEM AND METHOD FOR COAL COMBUSTION BOILER
    5.
    发明申请
    AIR POLLUTION CONTROL SYSTEM AND METHOD FOR COAL COMBUSTION BOILER 有权
    空气污染控制系统和煤燃烧锅炉的方法

    公开(公告)号:US20110052470A1

    公开(公告)日:2011-03-03

    申请号:US12863334

    申请日:2009-01-20

    IPC分类号: B01D53/50 B01J19/00

    摘要: An air pollution control system for a coal combustion boiler according to the present invention includes: a NOx removing apparatus (13) that reduces nitrogen oxide contained in flue gas emitted from this coal combustion boiler (11), an air pre-heater (14) that recovers heat in the gas, a precipitator 15 that reduces particulates from the gas, a liquid-gas contact type desulfurizer (16) that removes sulfur oxide by way of a limestone-gypsum method and reduces mercury oxide in the gas, a stack (17) that releases the gas after SOx removal to the exterior, and a solid-liquid separator (22) that extracts limestone-gypsum containing slurry (21) from the desulfurizer (16) to the exterior and performs a solid-liquid separation, where water (23) separated in the solid-liquid separator (22) is removed, and concentrated slurry (24) is sent back to the bottom of the desulfurizer (16) to make the gypsum concentration of slurry (25) equal to or higher than 10 percent in the desulfurizer (16).

    摘要翻译: 根据本发明的燃煤锅炉的空气污染控制系统包括:减少从该燃煤锅炉(11)排出的烟道气中所含的氮氧化物的NOx去除装置(13),空气预热器(14) 其回收气体中的热量,减少来自气体的微粒的沉淀器15,通过石灰石 - 石膏法除去硫氧化物并减少气体中的氧化汞的液 - 气接触型脱硫器(16),堆( 17),其将去除SOx后的气体释放到外部;以及固体 - 液体分离器(22),其将从所述脱硫器(16)提取的含石灰石 - 石膏的浆料(21)提供到外部并进行固液分离,其中 去除在固液分离器(22)中分离出的水(23),将浓缩浆液(24)送回脱硫器(16)的底部,使浆料(25)的石膏浓度等于或高于 10%在脱硫器(16)。

    Hydrogen chloride supply system, air pollution control system, and hydrogen chloride supply control system
    6.
    发明授权
    Hydrogen chloride supply system, air pollution control system, and hydrogen chloride supply control system 有权
    氯化氢供应系统,空气污染控制系统和氯化氢供应控制系统

    公开(公告)号:US08003068B2

    公开(公告)日:2011-08-23

    申请号:US12349804

    申请日:2009-01-07

    IPC分类号: B01D53/64 B01D53/74

    摘要: An air pollution control system comprises: a carry-in tank truck that carries in a feedstock, i.e., concentrated hydrochloric acid (35% hydrochloric acid); a hydrogen chloride vaporizer that vaporizes the concentrated hydrochloric acid to obtain hydrogen chloride; a liquid level regulator that separates residual hydrogen chloride from extracted dilute hydrochloric acid discharged as a by-product from the hydrogen chloride vaporizer, and that regulates the liquid level of the hydrogen chloride vaporizer; a concentration regulating tank that regulates the hydrochloric acid concentration of extracted dilute hydrochloric acid 25B from which the residual hydrogen chloride has been separated to a predetermined concentration (e.g., 22%); a by-product tank that stores therein dilute hydrochloric acid regulated to have a predetermined concentration; and a carry-out tank truck that carries out the dilute hydrochloric acid with a predetermined concentration discharged from the by-product tank.

    摘要翻译: 一种空气污染控制系统,包括:携带原料即携带式罐车,即浓盐酸(35%盐酸); 蒸发浓盐酸得到氯化氢的氯化氢蒸发器; 将剩余氯化氢与作为副产物从氯化氢蒸发器排出的萃取的稀盐酸分离并调节氯化氢蒸发器的液面的液位调节器; 浓度调节槽,其调节从其中分离残留氯化氢至预定浓度(例如22%)的提取的稀盐酸25B的盐酸浓度; 副产品罐,其中储存调节为具有预定浓度的稀盐酸; 以及进行从副产物罐排出的预定浓度的稀盐酸的运载罐车。

    Mercury reduction system
    8.
    发明授权
    Mercury reduction system 有权
    减汞系统

    公开(公告)号:US08071036B2

    公开(公告)日:2011-12-06

    申请号:US12640599

    申请日:2009-12-17

    IPC分类号: B01D53/64

    摘要: A mercury reduction system includes an NH4Cl supplying unit that sprays an NH4Cl solution into a flue of the boiler, a reduction denitration apparatus that includes a denitration catalyst for reducing NOx in the flue gas with NH3 and oxidizing Hg in the presence of HCl, and a wet desulfurization apparatus for reducing Hg oxidized in the reduction denitration apparatus with limestone-gypsum slurry. The NH4Cl supplying unit includes an NH4Cl solution feed pipe that supplies the NH4Cl solution into the flue in a liquid state, a blow pipe that is inserted into the flue so as to surround the NH4Cl solution feed pipe and through which air is injected into the flue, and a two-fluid nozzle that is fitted to an end of the NH4Cl solution feed pipe and through which the NH4Cl solution is injected. Through the two-fluid nozzle, the NH4Cl solution is injected and sprayed in fine liquid droplets. NH3 is supplied by an ammonia supplying unit and HCl is supplied by a hydrogen chloride supplying unit wherein both units are located between the NH4Cl agent supplying unit and the reduction denitration apparatus.

    摘要翻译: 一种汞还原系统包括将NH 4 Cl溶液喷射到锅炉烟道中的NH4Cl供应单元,还原脱硝装置包括用于在HCl存在下用NH 3还原NOx和氧化Hg的脱硝催化剂,以及 湿法脱硫装置,用于在还原脱硝装置中用石灰石 - 石膏浆料还原Hg。 NH4Cl供给单元包括以液态将NH 4 Cl溶液供给到烟道中的NH4Cl溶液进料管,吹入管,其插入到烟道中,以便包围NH 4 Cl溶液进料管并将空气注入到烟道中 ,以及安装在NH 4 Cl溶液进料管的端部并通过其注入NH 4 Cl溶液的双流体喷嘴。 通过双流体喷嘴,将NH 4 Cl溶液注入并喷射成细液滴。 NH 3由氨供应单元供应,HCl由氯化氢供应单元供应,其中两个单元位于NH 4 Cl剂供应单元和还原脱硝设备之间。