Ammonia elimination - from gasworks coking plant exhausts without water washing

摘要

Elimination of ammonia from coking plant and gasworks exhaust gases by (a) washing the gases directly with acids (or their solns) to produce a dissociable ammonium salt (b) decomposing the salts in a decomposition zone with a heat resitant body, and a Ni catalyst (c) buring by supplying air (opt. with other combustible gases). Prefd. acids are sulphuric acid, or aqs. suspensions or solns. of ammonium bisulphate or mono-ammonium phosphate.