METHOD OF PRODUCING STOICHIOMETRIC HYDRONITRIC MIXTURE, METHOD OF PRODUCING AMMONIA USING SAID MIXTURE AND APPARATUS FOR REALISING SAID METHODS Russian patent published in 2012 - IPC C01C1/04 C01B3/02 C01B3/52 B01D53/14 

FIELD: chemistry.

SUBSTANCE: inventions can be used in chemical industry. The method of producing a stoichiometric hydronitric mixture for synthesis of ammonia involves conversion of natural gas and subsequent purification of the obtained synthetic gas. When purifying synthetic gas, the operation of removing methane and argon from the synthetic gas is combined with the operation for condensation of excess nitrogen by absorbing methane and argon with the condensed excess nitrogen. The absorption process takes place in vertical pipes of an absorber-condenser in counter flow with the purified synthetic gas moving in the pipes from bottom up. The space between the pipes is cooled by throttling the condensate, and the absorber-condenser pipes are fitted with apparatus for swirling the stream of condensate. The obtained purified hydronitric mixture can be used in the ammonia synthesis method.

EFFECT: invention enables to completely extract methane and argon impurities from synthetic gas with incidental production of an argon product and liquefied methane, and also enables to considerably reduce ammonia synthesis pressure from 300 to 170 atm, which reduces power consumption in production of ammonia.

19 cl, 3 tbl, 2 dwg, 4 ex