Abstract:  In this paper, selection and practice of desulfurization and ammonia removal process are introduced for COG treatment. A new technology combining improved AS circulation scrubbing for desulfurization and ammonia removal is adopted. This new technology is characterized with rich solution decyanation and pressurized deacidification based on conventional AS desulfurization making concentrated ammonia liquor, without producing waste desulfurization liquid and sulfur slurry.

Key words:  , COG；AS circulation scrubbing for desulfurization；Ammonia removal