Hydrocarbon synthesis process
    56.
    发明授权
    Hydrocarbon synthesis process 失效
    烃合成工艺

    公开(公告)号:US08513313B2

    公开(公告)日:2013-08-20

    申请号:US12672985

    申请日:2008-08-05

    Abstract: This invention relates to a hydrocarbon synthesis process. More particularly, but not exclusively, this invention relates to a Fischer Tropsch Process employing an activated catalyst and to the use of such an activated catalyst, wherein the Fischer Tropsch Process conditions favor the attainment of a low acid selectivity. More particularly the invention relates to a three-phase low temperature Fischer Tropsch (LTFT) process wherein a feed of H2 and CO are converted to hydrocarbons and possible oxygenates thereof by contacting the H2 and CO in the presence of an iron-based Fischer Tropsch catalyst in a reaction zone, wherein the molar ratio of H2:CO in the feed is from 0.5 and less than 1.0 and wherein the iron-based Fischer Tropsch catalyst is activated according to the steps of: (a) providing an iron-based catalyst including iron in a positive oxidation state; and (b) contacting the iron-based catalyst in a reactor with a reducing gas selected from CO and a combination of H2 and CO; at a reduction temperature of at least 245° C. and below 280° C.; at a reducing gas pressure of above 0.5 MPa and not more than 2.2 MPa; and at a GHSV of total reducing gas fed to the reactor of at least 6000 ml(N)/g cat/h, thereby reducing the iron that is in a positive oxidation step in the catalyst.

    Abstract translation: 本发明涉及烃合成方法。 更具体地但非排他地,本发明涉及使用活化催化剂的费 - 托法和这种活化催化剂的用途,其中费托法条件有利于获得低酸选择性。 更具体地说,本发明涉及一种三相低温费托(LTFT)方法,其中通过在铁基费托催化剂存在下使H 2和CO接触将H 2和CO的进料转化为烃和可能的含氧化合物 在反应区中,其中进料中H 2 :CO的摩尔比为0.5至小于1.0,其中铁基费托催化剂根据以下步骤活化:(a)提供一种铁基催化剂,其包括 正铁氧化态; 和(b)使反应器中的铁基催化剂与选自CO和H2与CO的组合的还原气体接触; 在至少245℃和280℃以下的还原温度下进行。 在0.5MPa以上且2.2MPa以下的还原气体压力下, 并且在进料到反应器的总还原气体的GHSV为至少6000ml(N)/ g cat / h,从而减少催化剂中正氧化步骤中的铁。

    Rendering natural gas as an environmentally carbon dioxide neutral fuel and a regenerative carbon source
    57.
    发明授权
    Rendering natural gas as an environmentally carbon dioxide neutral fuel and a regenerative carbon source 有权
    渲染天然气作为环境二氧化碳中和燃料和再生碳源

    公开(公告)号:US08461217B2

    公开(公告)日:2013-06-11

    申请号:US12755957

    申请日:2010-04-07

    Abstract: The invention provides a method for rendering natural gas as an environmentally essentially carbon dioxide-neutral fuel. Carbon dioxide produced from natural gas combustion or from natural gas wells is captured, purified, combined with natural gas or methane or with hydrogen, and reacted under reaction conditions sufficient to form methanol and/or dimethyl ether, which can be used as fuel or feedstock for derived synthetic hydrocarbons and products.

    Abstract translation: 本发明提供了一种使天然气作为环境基本上是二氧化碳中性燃料的方法。 从天然气燃烧或天然气井产生的二氧化碳被捕获,纯化,与天然气或甲烷或氢气结合,并在足以形成甲醇和/或二甲醚的反应条件下反应,可用作燃料或原料 用于衍生合成碳氢化合物和产物。

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