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公开(公告)号：US20160271592A1
公开(公告)日：2016-09-22
申请号：US15034882
申请日：2014-11-04
申请人： SHELL OIL COMPANY
CPC分类号： B01J23/75 , B01J8/0015 , B01J21/063 , B01J23/8913 , B01J35/026 , B01J37/06 , B01J37/14 , B01J2208/00761 , C10G2/33 , C10G2/332 , C10G2/341 , C10G2300/4056 , C10G2300/70 , C10G2300/708
摘要： A process for facilitating the unloading of a fixed bed of cobalt/metal oxide catalyst particles from a reactor tube by (i) feeding a gas comprising 10 to 30 (vol/vol) percent of oxygen to the reactor tube with a GHSV for oxygen of 0.5 to 50 Nl/l/hr, and (ii) removing the catalyst particles from the reactor tube. In the fixed bed of catalyst particles to which the oxygen comprising gas is fed in step (i) at most 10 mole % of the element cobalt is present in Co3O4 and/or CoO, calculated on the total amount of moles of cobalt in the catalyst particles.
摘要翻译： 一种用于通过（i）将含有10〜30（vol / vol）％的氧气的气体供给到具有用于氧气的GHSV的反应器管的方式，促进从反应器管卸载固体床的钴/金属氧化物催化剂颗粒的方法 0.5至50Nl / l / hr，和（ii）从反应器管中除去催化剂颗粒。 在步骤（i）中向其中供入含氧气体的催化剂颗粒的固定床中，至少10摩尔％的元素钴存在于Co 3 O 4和/或CoO中，以催化剂中钴的总摩尔数计算 粒子。
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公开(公告)号：US20180195007A1
公开(公告)日：2018-07-12
申请号：US15126452
申请日：2015-03-16
申请人： SHELL OIL COMPANY
CPC分类号： C10G2/332 , B01J21/063 , B01J23/75 , B01J37/18 , C10G2/30 , C10G2/341 , C10G2300/1022 , C10G2300/202 , C10G2300/4031
摘要： The invention relates to a method for start-up and operation of a Fischer-Tropsch reactor comprising the steps of: (a) providing a reactor with a fixed bed of reduced Fischer-Tropsch catalyst that comprises cobalt as catalytically active metal; (b) supplying a gaseous feed stream comprising carbon monoxide and hydrogen to the reactor, wherein the gaseous feed stream comprises a nitrogen-containing compound other than molecular nitrogen in an initial concentration, wherein the initial concentration in the range of from 10 to 350 ppbv based on the volume of the gaseous feed stream; (c) converting carbon monoxide and hydrogen supplied with the gaseous feed stream to the reactor into hydrocarbons at a reaction temperature and at a set reactor productivity, whilst maintaining the initial concentration of the nitrogen-containing compound and maintaining the set reactor productivity during a first time period by adjusting the reaction temperature; (d) decreasing the concentration of the nitrogen- containing compound to a second concentration in the range of from 0 to 20 ppbv, wherein the second concentration is at least 5 ppbv below the initial concentration, preferably at least 20 ppbv below the initial concentration, and maintaining the reactor productivity by adjusting the reaction temperature.
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