Production of methane
    1.
    发明授权
    Production of methane 失效
    生产甲烷

    公开(公告)号:US3928001A

    公开(公告)日:1975-12-23

    申请号:US42947173

    申请日:1973-12-28

    Applicant: TEXACO INC

    Abstract: Improved process for the production of substantially pure methane or clean synthetic natural gas (SNG) including the steps of partial oxidation of a hydrocarbonaceous fuel feed with substantially pure oxygen to produce a process gas stream comprising principally H2, and CO and having a critical mole ratio H2/CO in the range of 1.0 to below 1.5 and preferably 1.0 to 1.3; cooling the process gas stream and separating H2O, CO2 particulate carbon and gaseous impurities therefrom, reacting together the H2 and CO in said process gas stream in a catalytic methanation zone to produce a methane-rich gas stream containing gaseous impurities selected from the group consisting primarily of H2O, and CO2, along with minor amounts of H2, CO, N2, and Ar and mixtures thereof; and removing said H2O and CO2 to produce a product gas stream comprising substantially pure methane i.e. 95 mole % or higher (dry basis). The product gas may be used as a clean substitute natural gas having a gross heating value of about 980 BTU/SCF or higher.

    Abstract translation: 用于生产基本上纯的甲烷或清洁合成天然气(SNG)的改进方法,包括以基本上纯的氧气部分氧化烃类燃料进料以产生主要包含H 2和CO并且具有临界摩尔比的工艺气流 在1.0至1.5以下,优选1.0至1.3的范围内的H 2 / CO; 冷却工艺气流并从其中分离H 2 O,CO 2颗粒碳和气态杂质,使催化甲烷化区中所述工艺气流中的H 2和CO一起反应,以产生富含甲烷的气流,其中气态杂质选自主要 的H 2 O和CO 2,以及少量的H 2,CO,N 2和Ar及其混合物; 并除去所述H 2 O和CO 2以产生包含基本上纯的甲烷,即95摩尔%或更高(干基)的产物气流。 产品气体可以用作总热值约980BTU / SCF或更高的洁净的替代天然气。

    Methane-rich gas process
    2.
    发明授权
    Methane-rich gas process 失效
    富含甲烷的气体过程

    公开(公告)号:US3927999A

    公开(公告)日:1975-12-23

    申请号:US42946973

    申请日:1973-12-28

    Applicant: TEXACO INC

    Abstract: A methane-rich gas stream is produced by catalytic methanation of synthesis gas feed comprising H2 and CO. When the mole ratio H2/CO of the synthesis gas feed is in the range of about 0.5 to 1.15, by adjusting the mole % H2O in the synthesis gas feed to a value in the range of about 0.1 to 15., the gross heating value of the product gas may be increased to a value above that obtained with a dry substantially CO2-free methanator feed gas. This effect of adding H2O becomes more pronounced as the H2/CO ratio drops further below the maximum value of 1.13. Further, in a preferred embodiment the gross heating value of the product gas (with H2O and CO2 removed) was maximized by adjusting the mole % H2O in the synthesis gas feed to the methanator to a critical value in the range of 1.0 to 3.0 and preferably 2.0 while maintaining the H2/CO mole ratio of the synthesis gas feed at a critical value in the range of about 1 to 1.15 and preferably 1.13.

    Abstract translation: 通过包含H 2和CO的合成气进料的催化甲烷化产生富甲烷气流。当合成气进料的摩尔比H 2 / CO在约0.5至1.15的范围内时,通过调节 合成气进料量在约0.1至15的范围内,产品气体的总热值可以增加到高于用干燥的基本上不含二氧化碳的甲烷反应器进料气体获得的值。 当H2 / CO比进一步低于1.13的最大值时,加入H 2 O的这种影响变得更加显着。 此外,在优选的实施方案中,通过将合成气进料中的摩尔%H 2 O调节至1.0至3.0的范围内的临界值,将产物气体(通过除去H 2 O和CO 2)的总热值最大化 2.0,同时将合成气进料的H 2 / CO摩尔比保持在约1至1.15,优选1.13的临界值。

    Methane-rich gas process
    3.
    发明授权
    Methane-rich gas process 失效
    富含甲烷的气体过程

    公开(公告)号:US3927997A

    公开(公告)日:1975-12-23

    申请号:US42946773

    申请日:1973-12-28

    Applicant: TEXACO INC

    Abstract: A methane-rich gas stream is produced by catalytic methanation of synthesis gas feed comprising H2 and CO. When the mole % CO in the synthesis gas feed to the methanator is greater than 10 mole %, and the mole ratio H2/CO is in the range of greater than 1.0 to 3, by adjusting the mole % CO2 in the synthesis gas feed to the methanator to a value in the range of about 0.5 to 20, and the mole ratio H2/CO2 in the range of about 2 to 60 and preferably less than 3.9 it was unexpectedly found that a product gas is produced having a gross heating value which is greater than that which is obtained from a dry CO2-free methanator feed gas.

    Abstract translation: 通过包含H 2和CO的合成气进料的催化甲烷化产生富甲烷气流,当进入甲烷转化器的合成气中的摩尔%CO大于10摩尔%时,H2 / CO摩尔比在 范围大于1.0至3,通过将在甲烷器中的合成气进料中的摩尔%CO 2调节至约0.5至20的范围内,并且摩尔比H2 / CO2在约2至60范围内,以及 优选小于3.9,意外地发现产生的总热值大于从干燥的无二氧化碳的甲烷反应器进料气体获得的产品气体。

    Production of methane-rich gas stream
    4.
    发明授权
    Production of methane-rich gas stream 失效
    生产富甲烷气流

    公开(公告)号:US3927998A

    公开(公告)日:1975-12-23

    申请号:US42946873

    申请日:1973-12-28

    Applicant: TEXACO INC

    Abstract: Improved process for the production of a methane-rich product gas stream comprising the following steps: partial oxidation of a hydrocarbonaceous fuel feed employing a H2O/fuel weight ratio of 2.2 to 2.9 and an atomic ratio of oxygen in the substantially pure oxygen to carbon in the fuel of 0.80 to 0.84 to produce a process gas stream comprising principally H2, CO and CH4 in which the mole ratio H2/CO is 1 to 2.5, the mole % CH4 is 15 or more, and the particulate carbon is 13 weight % (basis carbon in the fuel) or less; cooling the process gas stream and separating H2O, CO2, carbon, and gaseous impurities; reacting together the H2 and CO in said process gas stream in a catalytic methanation zone to produce a methane-rich gas stream principally comprising CH4 and containing gaseous members selected from the group consisting of H2, CO, H2O, CO2, and mixtures thereof; and removing said H2O and CO2 to produce a methane-rich product gas stream comprising about 93 mole percent of CH4. By means of the subject invention there is produced a high heating value clean fuel gas or a substitute natural gas of about 960 BTU per SCF or more.

    Abstract translation: 用于生产富含甲烷的产物气流的改进方法包括以下步骤:使用H 2 O /燃料重量比为2.2至2.9的烃类燃料进料的部分氧化和基本上纯的氧中的氧的原子比与碳的原子比 燃料为0.80至0.84,以产生主要为H 2,CO和CH 4的工艺气流,其中摩尔比H 2 / CO为1至2.5,摩尔%CH 4为15或更大,并且颗粒碳为13重量% 燃料中的基础碳)或更少; 冷却工艺气流并分离H 2 O,CO 2,碳和气态杂质; 在催化甲烷化区中使所述工艺气流中的H 2和CO一起反应,以产生主要包含CH 4并含有选自H 2,CO,H 2 O,CO 2及其混合物的气态成员的富甲烷气流; 并且除去所述H 2 O和CO 2以产生包含约93%(摩尔)CH 4的富甲烷产物气流。通过本发明,产生高热值清洁燃料气体或约960BTU的替代天然气 SCF或更多。

    Production of methane
    9.
    发明授权
    Production of methane 失效
    生产甲烷

    公开(公告)号:US3888043A

    公开(公告)日:1975-06-10

    申请号:US37335173

    申请日:1973-06-25

    Applicant: TEXACO INC

    Abstract: Continuous process for the production of a gaseous stream comprising at least 90 mole % of methane (dry basis) from a sulfur containing hydrocarbonaceous fuel without polluting the environment including the steps of: partial oxidation of the hydrocarbonaceous fuel with air; cooling, cleaning, and purifying the process gas stream to produce a stream of feed gas comprising CO, H2 and containing N2 in the range of about 30 to 60 mole % (dry basis); two separate catalytic methanation steps with an intervening water-gas shift reaction step; and finally separating CO2 and N2 from the process gas stream to produce said methane stream. The large amount of nitrogen diluent in the reacting gas during the methanation step helps to control the normally vigorous exothermic methanation reaction. The product gas has a heating value in the range of about 900-1000 BTU/SCF. It may be used as a substitute for natural gas or as a feedstock for organic chemical synthesis.

    Abstract translation: 用于生产包含至少90摩尔%的来自含硫烃类燃料的甲烷(干基)而不污染环境的气流的连续方法,包括以下步骤:用空气部分氧化烃类燃料; 冷却,清洁和净化工艺气流以产生包含CO,H 2并且含有约30至60摩尔%(干基)范围内的N 2的进料气流; 两个单独的催化甲烷化步骤,其中间的水煤气变换反应步骤; 最后从工艺气流中分离出二氧化碳和氮气以产生所述甲烷物流。 在甲烷化步骤中反应气体中的大量氮稀释剂有助于控制正常剧烈的放热甲烷化反应。 产物气体的热值在约900-1000BTU / SCF的范围内。 它可以用作天然气的替代物或用作有机化学合成的原料。

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