PURIFICATION OF HIGH TEMPERATURE REDUCTIVE GAS

摘要

PURPOSE:To concentrate and recover ammonia by adsorbing ammonia in high temp. reductive gas on zeolite and desorbing adsorbed ammonia by using the gas not containing the component adsorbed on zeolite and changing the temp. of a reactor. CONSTITUTION:A process using a plurality of reactors 11, 12 packed with zeolite 13 and adsorbing ammonia contained in high temp. reductive gas on zeolite 13 at 100-150 deg.C to remove the same and a regeneration process desorbing ammonia adsorbed on zeolite 13 from zeolite 13 by using gas not containing the component adsorbed on zeolite 13 and changing the temps. or pressures of the reactors are alternately performed. The high temp. reductive gas from which ammonia is removed is obtained and ammonia is recovered from the ammonia-containing gas generated in the regeneration process is recovered. As a result, ammonia in the high temp. reductive gas can be removed at high temp. under high pressure to be conc. and recovered.