METHOD OF CAPTURE OF AMMONIA OF FILLING UNIT OF THERMOSTABILISERS OF PERMANENTLY FROZEN SOILS Russian patent published in 2014 - IPC C05C3/00 C05C13/00 

FIELD: agriculture.

SUBSTANCE: method of capture of ammonia of filling unit of thermostabilisers of permanently frozen soils by absorbing gaseous ammonia in the system with the circulating ammonia water, and in the process of capture of ammonia the main amount of ammonia supplied from the filling tank to the thermostabiliser is condensed. The pulsating flow of gaseous ammonia is throttled, the absolute pressure of ammonia is reduced to 0.1-0.12 MPa and it is sent to the condenser where it is condensed again at the temperature minus (25-40)°C, and the condensed ammonia is then directed into the collector, the gaseous ammonia and inert gases liberated in the process of capture of ammonia are removed from the condenser and the collector to the ejector, where the subsequent capture of ammonia with water is carried out. The continuous process of absorption is carried out at a temperature of 10°-40°C in one step, at that excessive pressure of ammonia vapour is created in the range of 5-100 kPa with use of ammonia water with concentration of 5-25%, followed by removing the ammonia water from the ejector to the collecting container.

EFFECT: invention enables to improve the efficiency of environmental friendliness, to reduce energy consumption.

5 cl, 1 dwg