Process and apparatus for gas purification

摘要

Process for purifying gases and/or for recovering vaporous materials from gas streams involves cooling pre-cleaned gas removed from a heat exchanger (1) before feeding to a further heat exchanger (11). An Independent claim is also included for an apparatus for cleaning gases comprising a first heat exchanger (1) having a line (2) for introducing crude gas and a line (5) for removing cold pure gas to which are assigned a line (3) for introducing and a line (4) for removing a first cooling medium, a second heat exchanger (11) having a line (10) for introducing the cold pure gas and a line (12) for removing the pure gas to which are assigned a line (14) for introducing the first cooling medium introduced from the first heat exchanger using a fan or pump (13) and a line (15) for removing the first cooling medium from the second heat exchanger, and a third heat exchanger (17). A fourth heat exchanger (6) and/or at least one low temperature adsorber is arranged in the line (5) connecting the first heat exchanger with the second heat exchanger.