Pretreating process for ammonia

Abstract

A pre-treating process for ammonia gas used to prepare chemical fertilizer features that after the ammonia gas is pressurized to 1-25 kg / sq.cm, it is directly delivered to chemical fertilizer plant, or returned back to synthetic ammonia workpiece after cooled. Its advantages are no intermediate link and equipment, and low cost.

Description

technical field [0001] The invention relates to an ammonia gas supply method in a fertilizer production process, in particular to an ammonia gas pretreatment process. Background technique [0002] Ammonia gas is used as the main raw material for fertilizer production. The existing gas supply process uses the ammonia gas transported by the ammonia gas main pipe to be pressurized to a certain pressure by an ammonia compressor, then cooled by a water cooler into liquid ammonia, and then stored in an ammonia storage tank. Ammonia is evaporated into gaseous ammonia by the ammonia evaporator and sent to the production section. The pretreatment, that is, the gas supply section requires coolers, storage tanks, evaporators and other equipment, and must also go through processes such as pressurization, cooling, storage, and evaporation, which have the disadvantages of high energy consumption, high cost, and low safety and reliability. ...

AI Technical Summary

Problems solved by technology

Pretreatment, that is, the gas supply section requires coolers, storage tanks, evaporators and other equipment, and must also go through processes such as pressurization, cooling, storage, and evaporation, which have the disadvantages of high energy consumption, high cost, and low safety and reliability.