초록 ▼

There are disclosed a process for recovering ammonia which comprises installing a shell and multi-tube adsorber which is equipped with plural adsorption tubes each packed inside with an ammonia adsorbent (e.g. synthetic zeolite) and equipped with a flow mechanism for a heat transfer medium for perfo

There are disclosed a process for recovering ammonia which comprises installing a shell and multi-tube adsorber which is equipped with plural adsorption tubes each packed inside with an ammonia adsorbent (e.g. synthetic zeolite) and equipped with a flow mechanism for a heat transfer medium for performing heat exchange through the adsorption tubes, passing an ammonia-containing gas through the adsorption tubes, while cooling the adsorbent with a heat transfer medium (e.g. water) to adsorb the ammonia, and thereafter collecting the adsorbed ammonia through desorption, while heating the adsorbent with a heat transfer medium (e.g. hot water) under reduced pressure; and an apparatus for the above process. The process and apparatus can recover a large amount of ammonia with high purity in high yield in a short period of time and at need in a continuos manner, prevent the deterioration of adsorption performance by forced cooling of the adsorbent, and prevent the lowering of the desorption rate by forced heating of the adsorbent.

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for recovering ammonia which comprises installing at least one shell and multi-tube adsorber which is equipped with a plurality of adsorption tubes each having an inside diameter in the range of 25 to 300 mm and a length in the range of 250 to 3,000 mm, each p

[ What is claimed is:] [1.]1. A process for recovering ammonia which comprises installing at least one shell and multi-tube adsorber which is equipped with a plurality of adsorption tubes each having an inside diameter in the range of 25 to 300 mm and a length in the range of 250 to 3,000 mm, each packed inside with an ammonia adsorbent and equipped with a flow mechanism for a heat transfer medium for performing heat exchange through said adsorption tubes, passing an ammonia-containing gas through said adsorption tubes, while cooling the inside of said adsorption tubes with a heat transfer medium so as to capture the ammonia contained in said gas through adsorption, and thereafter collecting the captured ammonia medium under reduced pressure.