Mercury re-emission control
    1.
    发明授权
    Mercury re-emission control 有权
    汞再排放控制

    公开(公告)号:US09120055B2

    公开(公告)日:2015-09-01

    申请号:US14164863

    申请日:2014-01-27

    摘要: A method for reducing mercury emission and/or re-emission in cleaned flue gas through control of dissolved mercury species concentration within a wet flue gas desulfurization (WFGD) system is disclosed. One method for reducing mercury emission and/or re-emission through control of dissolved mercury species concentration is to measure the dissolved mercury species concentration of an aqueous alkaline slurry used in a WFGD system and/or measuring mercury concentration of cleaned flue gas from a WFGD system and comparing the same to a predetermined dissolved mercury species concentration value and/or a predetermined mercury concentration value. If the comparison reveals the measured dissolved mercury species concentration or mercury concentration is above the predetermined values therefor, the amount of cyclodextrin additive supplied to the system is increased. If the comparison reveals the measured dissolved mercury species concentration or mercury concentration is below the predetermined values, the amount of cyclodextrin additive supplied to the system is decreased.

    摘要翻译: 公开了一种通过控制湿烟道气脱硫(WFGD)系统中溶解的汞物质浓度来减少净化烟道气中的汞排放和/或再排放的方法。 通过控制溶解的汞物质浓度来减少汞排放和/或再排放的一种方法是测量WFGD系统中使用的碱性水溶液的溶解汞物质浓度和/或测量来自WFGD的净化烟道气的汞浓度 并将其与预定的溶解汞物质浓度值和/或预定汞浓度值进行比较。 如果比较显示测得的溶解汞物质浓度或汞浓度高于其预定值,则提供给系统的环糊精添加剂的量增加。 如果比较显示测得的溶解汞种类浓度或汞浓度低于预定值,则提供给系统的环糊精添加剂的量减少。

    MERCURY RE-EMISSION CONTROL
    2.
    发明申请
    MERCURY RE-EMISSION CONTROL 有权
    汞排放控制

    公开(公告)号:US20150209725A1

    公开(公告)日:2015-07-30

    申请号:US14164863

    申请日:2014-01-27

    IPC分类号: B01D53/64 B01D53/34 B01D53/50

    摘要: A method for reducing mercury emission and/or re-emission in cleaned flue gas through control of dissolved mercury species concentration within a wet flue gas desulfurization (WFGD) system is disclosed. One method for reducing mercury emission and/or re-emission through control of dissolved mercury species concentration is to measure the dissolved mercury species concentration of an aqueous alkaline slurry used in a WFGD system and/or measuring mercury concentration of cleaned flue gas from a WFGD system and comparing the same to a predetermined dissolved mercury species concentration value and/or a predetermined mercury concentration value. If the comparison reveals the measured dissolved mercury species concentration or mercury concentration is above the predetermined values therefor, the amount of cyclodextrin additive supplied to the system is increased. If the comparison reveals the measured dissolved mercury species concentration or mercury concentration is below the predetermined values, the amount of cyclodextrin additive supplied to the system is decreased.

    摘要翻译: 公开了一种通过控制湿烟道气脱硫(WFGD)系统中溶解的汞物质浓度来减少净化烟道气中的汞排放和/或再排放的方法。 通过控制溶解的汞物质浓度来减少汞排放和/或再排放的一种方法是测量WFGD系统中使用的碱性水溶液的溶解汞物质浓度和/或测量来自WFGD的净化烟道气的汞浓度 并将其与预定的溶解汞物质浓度值和/或预定汞浓度值进行比较。 如果比较显示测得的溶解汞物质浓度或汞浓度高于其预定值,则提供给系统的环糊精添加剂的量增加。 如果比较显示测得的溶解汞种类浓度或汞浓度低于预定值,则提供给系统的环糊精添加剂的量减少。

    METHOD AND A DEVICE FOR REMOVING NITROGEN OXIDES AND SULPHUR TRIOXIDE FROM A PROCESS GAS
    3.
    发明申请
    METHOD AND A DEVICE FOR REMOVING NITROGEN OXIDES AND SULPHUR TRIOXIDE FROM A PROCESS GAS 审中-公开
    从工艺气体中去除氮氧化物和三氧化硫的方法和装置

    公开(公告)号:US20150030508A1

    公开(公告)日:2015-01-29

    申请号:US14503767

    申请日:2014-10-01

    IPC分类号: B01D53/86

    摘要: A catalytic reactor (16) is provided for purposes of effecting therewith the removal of nitrogen oxides from a process gas (F) that includes at least two catalyst bed segments (48, 50, 52), each of which is provided with a closing device (60, 62, 64). The catalytic reactor (16) is operative for causing said process gas (F) to flow through a first catalyst bed segment (48). Said process gas (F) is at a first temperature at which the sulphur trioxide that is entrained in said hot process gas is at least partially precipitated out on to the catalytic material that said first catalyst bed segment (48) embodies. Periodically said closing device (60) is operated in order to thereby isolate said first bed segment (48) from the flow therethrough of said hot process gas (F). A regeneration system (34, 36, 38) is also provided that is operative for purposes of causing a regenerating gas to flow through the first bed segment (48). In addition, a sulphur trioxide removal device (20) is provided, which is separate from said catalytic reactor (16), and which is operative for purposes of effecting therewith the removal of the sulphur trioxide from said regenerating gas.

    摘要翻译: 提供了一种催化反应器(16),用于实现从包括至少两个催化剂床段(48,50,52)的工艺气体(F)中除去氮氧化物,每个催化剂床段(48,50,52)设置有闭合装置 (60,62,64)。 催化反应器(16)用于使所述工艺气体(F)流过第一催化剂床段(48)。 所述工艺气体(F)处于被夹带在所述热处理气体中的三氧化硫至少部分地沉淀到所述第一催化剂床段(48)所体现的催化材料上的第一温度。 周期性地操作所述关闭装置(60),以便使所述第一床段(48)与所述热处理气体(F)中的流动隔开。 还提供再生系统(34,36,38),其用于使再生气体流过第一床段(48)。 另外,提供了与所述催化反应器(16)分开的三氧化硫去除装置(20),其用于从其再生气体中除去三氧化硫的目的。