Process for the deposition of gaseous materials from gaseous media by condensation

摘要

The gaseous medium is compressed, cooled in a heat exchanger by the cold medium after the following expansion, then expanded and thereby further cooled, and then reheated in the heat exchanger. Very low temperatures can be reached by this process after the expansion, so that gases with fairly high condensation temperature, for example sulphur dioxide, can consequently be condensed out. This process can be used to cool the flue gases of large furnace plants to temperatures below -100 DEG C and thus to desulphurise them to the greatest possible extent.