公开(公告)号：US20150030508A1

公开(公告)日：2015-01-29

申请号：US14503767

申请日：2014-10-01

Applicant: ALSTOM Technology Ltd

Inventor： John BUSCHMANN ,  Lawrence Joseph Czarnecki ,  Mou Jian ,  Frederic Zenon Kozak

IPC: B01D53/86

CPC classification number: B01D53/8631 ,  B01D53/505 ,  B01D53/77 ,  B01D53/8637 ,  B01D53/96 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2251/404 ,  B01D2251/604 ,  B01D2255/20707 ,  B01D2255/20776 ,  B01D2255/9045 ,  B01D2255/9207 ,  B01D2259/80 ,  B01J23/92 ,  B03C3/017 ,  F23J15/006 ,  F23J15/04 ,  F23J2215/10 ,  F23J2215/20 ,  F23J2217/102 ,  F23J2219/10

Abstract: 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.

Abstract translation: 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。