Patent ID: 7741501
Filing Date: 2010-06-22
Classification: B01J,C11C

Abstract:
1. A process for carrying out heterogeneously catalyzed hydrogenation reactions in a fixed-bed reactor, comprising the steps of: (a) providing at least one main reactor containing a first amount of catalyst; (b) providing a first auxiliary reactor connected in selective fluid communication with said at least one main reactor such that it can be operated up stream or downstream of said main reactor and having contained therein a second amount of catalyst, said first amount of catalyst being relatively larger than said second amount of catalyst; (c) providing a second auxiliary reactor connected in selective fluid communication with said main reactor such that it can be operated upstream or downstream of said main reactor and having contained therein a third amount of catalyst, wherein the first amount of catalyst is relatively larger than the third amount of catalyst, said second and third amounts being the same or different; (d) during a first phase of operation of said process, (e) during a second phase of operation of said process,