公开(公告)号：AU2015309020A1

公开(公告)日：2017-04-06

申请号：AU2015309020

申请日：2015-08-20

Applicant: BASF SE

Inventor： INGRAM THOMAS ,  DA SILVA MARION ,  SIEDER GEORG

IPC: C07C217/08 ,  B01D53/14 ,  B01J31/24 ,  C10L3/10

Abstract: A compound of the general formula (I) in which R

公开(公告)号：CA2959700A1

公开(公告)日：2016-03-03

申请号：CA2959700

申请日：2015-08-20

Applicant: BASF SE

Inventor： VORBERG GERALD ,  NOTZ RALF ,  INGRAM THOMAS ,  SIEDER GEORG ,  KATZ TORSTEN

IPC: B01D53/14 ,  C10L3/10

Abstract: An absorbent for selective removal of hydrogen sulfide from a fluid stream comprises an aqueous solution of a) a tertiary amine, b) a sterically hindered secondary amine of the general formula (I) in which R1 and R2 are each independently selected from C1-4-alkyl and C1-4-hydroxyalkyl; R3, R4, R5 and R6 are each independently selected from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl, with the proviso that at least one R4 and/or R5 radical on the carbon atom bonded directly to the nitrogen atom is C1-4-alkyl or C1-4-hydroxyalkyl when R3 is hydrogen; x and y are integers from 2 to 4 and z is an integer from 1 to 4; where the molar ratio of b) to a) is in the range from 0.3 to 0.7, and c) an acid in an amount, calculated as neutralization equivalents relative to the protonatable nitrogen atoms in a) and b), of 1.0 to 9.0%. One preferred amine of the formula is 2-(2-tert-butylaminoethoxy)ethanol. The absorbent allows a defined H2S selectivity to be set at pressures of the kind typical in natural gas processing. In addition, a process for removing acidic gases from a fluid stream having a partial H2S pressure of at least 0.1 bar and/or a partial CO2 pressure of at least 0.2 bar by means of this absorbent.

公开(公告)号：CA2959095A1

公开(公告)日：2016-03-03

申请号：CA2959095

申请日：2015-08-20

Applicant: BASF SE

Inventor： INGRAM THOMAS ,  NOTZ RALF ,  VORBERG GERALD ,  SIEDER GEORG ,  LOZANO MARTINEZ GUSTAVO ADOLFO ,  GARCIA ANDARCIA HUGO RAFAEL

IPC: B01D53/14

Abstract: Disclosed is an absorbent for removing carbon dioxide from a fluid flow, said absorbent comprising an aqueous solution of: a) an amine of general formula (I), wherein R1, R2 and R3 are selected independently from one another from C1-4-alkyl and C1-4-hydroxyalkyl, R4 in each case is selected independently from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl, R5 in each case is selected independently from hydrogen, C1-4-alkyl and C1-4-hydroxyalkyl, X stands for OH or NH(CR1R2R3), m stands for 2, 3, 4 or 5, n stands for 2, 3, 4 or 5, and o stands for 0 or 1; and b) at least one activator selected from 5-, 6-, or 7-membered heterocycles with an NH group in the ring and one or to other heteroatoms in the ring, which are selected from nitrogen and oxygen. The absorbent enables a rapid absorption of carbon dioxide from fluid flows.

公开(公告)号：CA2959093A1

公开(公告)日：2016-03-03

申请号：CA2959093

申请日：2015-08-20

Applicant: BASF SE

Inventor： INGRAM THOMAS ,  NOTZ RALF ,  VORBERG GERALD ,  SIEDER GEORG

IPC: B01D53/14

Abstract: The invention relates to a method for removing hydrogen sulphide and carbon dioxide from a stream of fluid, the method comprising: a) an absorption step, in which the stream of fluid is brought into contact with an absorption agent comprising an aqueous solution (i) of an amine of general formula (I), where R1, R2 and R3 are selected independently of one another from among C1-4 alkyl and C1-4 hydroxyalkyl; R4 in each case is independently selected from among hydrogen, C1-4 alkyl and C1-4 hydroxyalkyl; R5 in each case is selected from among hydrogen, C1-4 alkyl and C1-4 hydroxyalkyl; X represents OH or NH(CR1 R2R3); m represents 2, 3, 4 or 5; n represents 2, 3, 4 or 5; and o represents 0 or 1; and optionally (ii) at least one tertiary amine, the molar ratio of (i) to (ii) is greater than 0.05; wherein at least 90% of the hydrogen sulphide is removed from the stream of fluid, the selectivity for hydrogen sulphide in relation to carbon dioxide is no greater than 8 and a CO2- and H2S-loaded absorbent agent is thus obtained; b) a regeneration step, in which at least one sub-stream of the CO2- and H2S-loaded absorption agent is regenerated and a regenerated absorption agent is thus obtained; and c) a recirculation step, in which at least one sub-stream of the regenerated absorption agent is recirculated to the absorption step a). The method permits a high degree of separation of the hydrogen sulphide with a simultaneously high coabsorption of carbon dioxide.