Oligomerisation of ethylene to mixtures of 1-hexene and 1-octene
    1.
    发明授权
    Oligomerisation of ethylene to mixtures of 1-hexene and 1-octene 有权
    乙烯与1-己烯和1-辛烯混合物的低聚

    公开(公告)号:US09533922B2

    公开(公告)日:2017-01-03

    申请号:US14888520

    申请日:2014-05-06

    IPC分类号: C07C2/32 C07C2/36

    摘要: A process for the oligomerization of ethylene to predominantly 1-hexene or 1-octene or mixtures of 1-hexene and 1-octene includes contacting ethylene with a catalyst under ethylene oligomerization conditions. The catalyst comprises a source of chromium, a diphosphine ligating compound, and optionally an activator. The diphosphine ligating compound includes at least one optionally substituted fused cyclic structure including at least two rings, the optionally substituted fused cyclic structure including a 5- to 7-membered aromatic first ring bonded to a phosphorus atom, the aromatic first ring being fused to a 4- to 8-membered heterocyclic second ring, the heterocyclic second ring including a heteroatom which is separated by two ring atoms along the shortest connecting path from the phosphorous atom that is bonded to the first aromatic ring.

    摘要翻译: 将乙烯低聚至主要1-己烯或1-辛烯或1-己烯和1-辛烯的混合物的方法包括在乙烯齐聚条件下使乙烯与催化剂接触。 催化剂包含铬源,二膦连接化合物和任选的活化剂。 二膦连接化合物包括至少一个包含至少两个环的任选取代的稠合环状结构,任选取代的稠合环状结构包括与磷原子键合的5-至7-元芳族第一环,芳族第一环与 4-至8-元杂环第二环,杂环第二环包括由键合到第一芳香环上的磷原子的最短连接路径被两个环原子分开的杂原子。

    Fischer-tropsch synthesis
    4.
    发明授权
    Fischer-tropsch synthesis 有权
    费 - 托合成

    公开(公告)号:US09061952B2

    公开(公告)日:2015-06-23

    申请号:US14379482

    申请日:2013-02-20

    IPC分类号: C07C27/06 C07C1/04 C10G2/00

    摘要: A process (10) to produce Fischer-Tropsch products includes feeding feed synthesis gas (30) with a substantially constant target feed synthesis gas H2/CO ratio to a Fischer-Tropsch synthesis stage (16). A portion of the feed synthesis gas (30) is converted to Fischer-Tropsch products in the Fischer-Tropsch synthesis stage (16). The Fischer-Tropsch products (20) from the Fischer-Tropsch synthesis stage (16) are withdrawn. A Fischer-Tropsch synthesis stage tail gas (26) which includes unconverted H2 and CO is obtained. The operating conditions of the Fischer-Tropsch synthesis stage (16) are manipulated to achieve a substantially constant target tail gas H2/CO ratio, with the target tail gas H2/CO ratio being substantially different from the target feed synthesis gas H2/CO ratio.

    摘要翻译: 制备费 - 托产品的方法(10)包括将基本上恒定的目标原料合成气H 2 / CO比的进料合成气(30)进料到费 - 托合成阶段(16)。 一部分原料合成气(30)在费 - 托合成阶段(16)中转化成费 - 托产物。 取出费 - 托合成阶段(16)的费 - 托产物(20)。 得到包含未转化的H 2和CO的费 - 托合成段尾气(26)。 操作费 - 托合成阶段(16)的操作条件以实现基本上恒定的目标尾气H 2 / CO比,目标尾气H 2 / CO比率与目标原料合成气H 2 / CO比率基本上不同 。

    Cobalt catalysts
    6.
    发明申请
    Cobalt catalysts 有权
    钴催化剂

    公开(公告)号:US20030125201A1

    公开(公告)日:2003-07-03

    申请号:US10159970

    申请日:2002-05-31

    IPC分类号: B01J023/75

    摘要: A cobalt catalyst precursor includes a catalyst support impregnated with cobalt. All reducible cobalt is present in the support as supported cobalt oxide of formula-unit CoOaHb, where anull1,7 and bnull0. A process for preparing a cobalt catalyst precursor, and a process for preparing a cobalt catalyst are also provided.

    摘要翻译: 钴催化剂前体包括浸渍有钴的催化剂载体。 所有可还原钴在载体中作为式 - 单元CoOaHb的负载型钴氧化物存在,其中a> = 1,7和b> = 0。 还提供了制备钴催化剂​​前体的方法和制备钴催化剂​​的方法。

    A METHOD OF OPERATING A SLURRY BUBBLE COLUMN REACTOR

    公开(公告)号:US20200283685A1

    公开(公告)日:2020-09-10

    申请号:US15932374

    申请日:2016-08-10

    IPC分类号: C10G2/00 B01J8/22

    摘要: A method for starting a slurry bubble column reactor that includes a reactor vessel holding a settled or slumped bed of particles and a liquid phase from which the particles have settled includes introducing a flow of a re-suspension liquid into the settled or slumped bed to loosen the settled or slumped bed. The introduction of the re-suspension liquid takes place before the introduction of any gas into the settled or slumped bed, or together with feeding of gas into the settled or slumped bed, provided that, if gas is fed together with the re-suspension liquid into the settled or slumped bed before the settled or slumped bed has been loosened, the gas has a superficial gas velocity in the reactor below 10 cm/s. Once the settled or slumped bed has been loosened by at least the re-suspension liquid, gas is passed at a superficial gas velocity above 10 cm/s through the liquid phase.

    Slurry phase apparatus
    9.
    发明授权

    公开(公告)号:US10322393B2

    公开(公告)日:2019-06-18

    申请号:US15855860

    申请日:2017-12-27

    IPC分类号: B01J8/22 B01J8/18 C10G2/00

    摘要: A method of operating a slurry phase apparatus includes feeding one or more gaseous reactants into a slurry body of solid particulate material suspended in a suspension liquid contained inside a vessel. The one or more gaseous reactants are fed into the slurry body through a gas distributor having downward facing gas outlets and are fed towards a fluid impermeable partition spanning across the vessel below the gas distributor. The partition divides the vessel into a slurry volume above the partition and a bottom volume below the partition. A differential pressure is maintained over the partition between predefined limits by manipulating or allowing changes in the pressure in the bottom volume by employing a pressure transfer passage establishing flow or pressure communication between the bottom volume and a head space above the slurry body.

    Method and plant for co-generation of heat and power

    公开(公告)号:US10233789B2

    公开(公告)日:2019-03-19

    申请号:US15034097

    申请日:2014-10-31

    摘要: A method of operating a combined heat and power plant (10) (CHP plant) includes generating hot flue gas and cooling the hot flue gas in a sequence of cooling steps to recover heat and to generate steam in a heat recovery steam generator (16) (HRSG). The HRSG (16) includes an LP steam evaporator (36) designed to generate steam at least over a pressure range of from 2 bar(g) to 18 bar(g) so that either LP steam or MP steam can selectively be generated by the LP steam generator (36), thereby to cool the hot flue gas, and an MP steam superheater (24) upstream of the LP steam evaporator (36) to superheat MP steam in heat exchange with the hot flue gas thereby to cool the hot flue gas. The method further includes, when no or insufficient MP steam is being imported to the MP steam superheater (24) to ensure safe operation of the MP steam superheater, and/or when a demand exists for exporting MP steam which cannot be satisfied by imported MP steam superheated in the MP steam superheater (24), and/or when a demand exists for MP steam in the CHP plant which cannot be satisfied by imported MP steam, operating the LP steam evaporator (36) at an operating pressure in the range of between 8 bar(g) and 18 bar(g) to generate MP steam to wet the MP steam superheater (24) and/or to satisfy at least to some extent said demand for MP steam, and thereafter, when sufficient MP steam is being imported to the MP steam superheater (24) from external of the CHP plant (10) to ensure safe operation of the MP steam superheater (24), and/or when any demand for exported MP steam is satisfied by imported MP steam which is superheated in the MP steam superheater (24) and then exported, and/or when there is no more demand for exporting of MP steam, and/or when the demand for MP steam in the CHP plant (10) is being satisfied at least to some extent by imported MP steam, reducing the operating pressure of the LP steam evaporator (36) to a pressure in the range of between 2 bar(g) and 8 bar(g) thereby to generate LP steam.