公开(公告)号：PT2391435E

公开(公告)日：2014-01-23

申请号：PT10701558

申请日：2010-02-01

Applicant: BASF SE

Inventor： ANDARCIA HUGO RAFAEL GARCIA ,  LICHTFERS UTE ,  SIEDER GEORG ,  SPUHL OLIVER ,  BRUGHMANS STEVEN

IPC: B01D53/14

公开(公告)号：CA2750460A1

公开(公告)日：2010-08-05

申请号：CA2750460

申请日：2010-02-01

Applicant: BASF SE

Inventor： GARCIA ANDARCIA HUGO RAFAEL ,  LICHTFERS UTE ,  SIEDER GEORG ,  SPUHL OLIVER ,  BRUGHMANS STEVEN

IPC: B01D53/14

Abstract: The invention relates to an absorbent for removing acid gases from a fluid flow, comprising an aqueous solution A) of at least one cyclic amine compound having exclusively tertiary amine groups and/or sterically hindered secondary amine groups, and B) of at least one cyclic amine compound having at least one sterically unhindered secondary amine group. The absorbent comprises, for example, an aqueous solution of A) 1-hydroxyethyl-piperidine and/or triethylenediamine and B) piperazine. The absorbent is suited especially for separating carbon dioxide from flue gases and meets the following criteria: (i) sufficient capacity at low CO2 partial pressures; (ii) sufficiently fast absorption speed at low CO2 partial pressures; (iii) stability toward oxygen; (iv) low vapor pressure in order to reduce solvent losses; and (v) low energy requirement for regenerating the absorbent.

公开(公告)号：CA2727057A1

公开(公告)日：2009-12-30

申请号：CA2727057

申请日：2009-06-09

Applicant: BASF SE

Inventor： LICHTFERS UTE ,  THIELE ROBIN ,  VOGES SUSANNA ,  SIEDER GEORG ,  SPUHL OLIVER ,  GARCIA ANDARCIA HUGO RAFAEL

IPC: B01D53/14 ,  B01D53/62 ,  C10L3/10

Abstract: Absorption medium for sour gases, comprising an oligoamine (A) of the general formula (I) and a piperazine derivative (B) of the general formula (II), in which the weight ratio of oligoamine (A) to piperazine derivative (B) is 0.2 to 25, and a method for removing sour gases from a gas stream by contacting the gas stream at a pressure of 0.05 to 10 MPa abs with an aqueous solution of said absorption means, said solution being temperature-controlled at a temperature of 20 to 80°C.