Patent ID: 8551219
Filing Date: 2013-10-08
Classification: B01D,C01C,F01N,Y02C,Y02P,Y02T

Abstract:
1. A method of storing and releasing gaseous ammonia from solid storage materials wherein a first solid storage material capable of releasing ammonia by desorption in a first container and a second solid storage material capable of ad- or absorbing ammonia reversibly and having a higher affinity for ammonia than the first storage material in a second container smaller than said first container are in fluid communication, and wherein the pressure in at least the first container is kept below the equilibrium pressure between ammonia and the storage material contained therein by means of a vacuum pump, further comprising the steps of, when the pressure in the first container is below a pressure level where the first storage material does not release an amount of ammonia required by an ammonia consuming device connected with the containers via the vacuum pump, the second storage material is heated such that the ammonia pressure of the second material is higher than the ammonia pressure of the first material, and the ammonia released by the second material is continuously pumped off so as to deliver sufficient ammonia to said ammonia consuming unit.