ამიაკისა და ციანმჟავას წარმოებებში გამოყენებული აბსორბენტების შეცვლა მაღალტექნოლოგიური აქტივირებული აბსორბენტებით

Abstract

Piperazine-activated methyldiethanolamine was selected from various absorbers to purify the converted gas CO2 in the production of ammonia in Rustavi Azot. Purification of converted gas from carbon dioxide is intended to protect the ammonia synthesis catalyst from poisoning and deactivation. The absorbent was selected due to its high capacity with respect to carbon dioxide as well as its lower steam consumption compared to other absorbents during the circulation and regeneration stages. At the expense of the released steam, a condensing power plant was introduced, through which the plant will generate electricity. In the production of cyanic acid, orthophosphoric acid was used for years to bind the residual ammonia from the contact gases to prevent the polymerization process. Due to the technological modes of production, only one third of the total amount of orthophosphoric acid has the ability to form a stable substituent phosphate with ammonia, hence it worked as a monounsaturated acid on the system. Later orthophosphoric acid was replaced by a more hightech absorbent — acetic acid. Acetic acid is a single-base volatile acid which, unlike orthophosphoric acid, has the ability to stabilize cyanic acid in both the liquid and gaseous phases and to form a stable compound, ammonium acetate, with ammonia. The introduction of a new inhibitor has made production more stable and safer.