公开(公告)号：EP1029015A4

公开(公告)日：2001-01-03

申请号：EP98936931

申请日：1998-07-21

申请人： BETZDEARBORN INC

发明人： MINEVSKI LJILJANA V

IPC分类号： B01D53/14 ,  C10G19/00 ,  C10G75/02 ,  C23F11/06 ,  C09K3/00 ,  C10G9/12 ,  C10G29/20 ,  C23F11/02

CPC分类号： B01D53/1456 ,  B01D53/1493 ,  C10G19/00 ,  C10G75/02 ,  C23F11/06

摘要： The corrosion of metals in contact with aqueous alkanolamine solution in acid gas removal units is inhibited by maintaining in the alkanolamine solution a corrosion inhibiting amount of a compound having formula (I) where R is S or O, and R1, R2, R3 and R4 are independently H, C1 to C8 alkyl, C1 to C8 alkenyl, C6 to C10 aryl, C7 to C12 alkaryl, C7 to C12 aralkyl, C3 to C10 cycloalkyl, C1 to C8 thiophene, or amino groups. The alkanedithiol is useful for inhibiting the corrosion of metals in both the acid gas rich and lean portions of the acid gas removal unit.

公开(公告)号：EP1037955A4

公开(公告)日：2002-11-05

申请号：EP98936933

申请日：1998-07-21

申请人： BETZDEARBORN INC

发明人： MINEVSKI LJILJANA V ,  LAMBOUSY ANN L

IPC分类号： B01D53/14 ,  C10G75/02 ,  C10L3/10 ,  C23F11/06 ,  C09K15/00 ,  C01B17/00 ,  C01B31/00

CPC分类号： C10L3/10 ,  B01D53/1493 ,  C10G75/02 ,  C23F11/06

摘要： The corrosion of metals in contact with an aqueous alkanolamine solution in an acid gas removal unit is inhibited by adding a corrosion inhibiting amount of an alkanemonothiol or alkanedithiol compound to the aqueous alkanolamine solution. The alkanemonothiol and alkanedithiol compounds are useful for inhibiting the corrosion of metals in both the acid gas rich and lean portions of the acid gas removal unit.