The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 17, 2001
Filed:
Oct. 07, 1999
Yasusada Miyano, Kanagawa-ken, JP;
Kenji Otsuka, Kanagawa-ken, JP;
Satoshi Arakawa, Kanagawa-ken, JP;
Japan Pionics Co., Ltd., Tokyo, JP;
Abstract
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.