METHOD OF REFILLING HEAT STABILISER Russian patent published in 2015 - IPC E02D3/115 

FIELD: chemistry.

SUBSTANCE: method of refilling a heat stabiliser with liquid synthetic ammonia includes purifying liquid ammonia from inert gas impurities by pumping said liquid ammonia into a refilling container, where it is heated to 18-30°C with pressure in the refilling container of 0.8-1.19 MPa, while gradually reducing the pressure of ammonia in the container filled with the liquid ammonia and maintaining boiling thereof for 10-15 s in the volume of the refilling container. Inert gases and evaporated ammonia are removed by blowing in an ammonia trapping system, wherein the number of times of blowing depends on the volume of the refilling container and pressure drop, which is not greater than 1°C on the finned part of the condenser. The purified liquid ammonia is fed into a batcher and then into the heat stabiliser.

EFFECT: carrying out a process of purifying synthetic ammonia from inert gas impurities to the required standard for refilling heat stabilisers, improved production and cost parameters of refilling and operating heat stabilisers.

1 dwg