Process for recovering liquid ammonia from a textile fabric treated with liquid ammonia or with liquid ammonia solutions.

摘要

This is a process for the recovery of ammonia from a fabric treated with liquid ammonia or with a liquid ammonia solution. This process is characterised in that it envisages the following steps:a) evaporation or washing of ammonia from the fabric, inside a process machine (A);b) fixing and concentration of ammonia, in the form of ammonium hydroxide, inside a scrubber (B);c) partial evaporation, by heating, of an adjustable percentage of ammonia, starting from the concentrated solution of ammonium hydroxide, inside an evaporator (C);d) complete transformation of the evaporated ammonia to liquid form, inside a liquefier (D);e) cooling of the ammonium hydroxide solution depleted in ammonia, which is then sent back into scrubber (B), to be enriched again with ammonia.