利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

30 条记录 (耗时 0.013 秒)

    Conversion of organosulfur compounds to oxyorganosulfur compounds for desulfurization of fossil fuels
    1.
    发明授权
    Conversion of organosulfur compounds to oxyorganosulfur compounds for desulfurization of fossil fuels 失效
    有机硫化合物转化为氧化硫化合物用于化石燃料脱硫

    公开(公告)号：US6071738A

    公开(公告)日：2000-06-06

    申请号：US933885

    申请日：1997-09-19

    申请人： Steven W. Johnson ,  Daniel J. Monticello ,  Charles Hazan ,  Jean-Michel Colin

    发明人： Steven W. Johnson ,  Daniel J. Monticello ,  Charles Hazan ,  Jean-Michel Colin

    IPC分类号： C10G32/00 ,  C12S1/02

    CPC分类号： C10G32/00

    摘要： The present invention relates to a method for the desulfurization of a fossil fuel containing one or more organosulfur compounds. In one embodiment, the method comprises the steps of (1) contacting the fossil fuel with a biocatalyst capable of converting the organosulfur compound to an oxyorganosulfur compound which is separable from the fossil fuel; and (2) separating the oxyorganosulfur compound from the fossil fuel. The oxyorganosulfur compound can then be isolated, discarded or further processed, for example, via desulfurization by a biocatalyzed process or an abiotic process, such as hydrodesulfurization.

    摘要翻译： 本发明涉及含有一种或多种有机硫化合物的化石燃料的脱硫方法。 在一个实施方案中，该方法包括以下步骤：（1）使化石燃料与能够将有机硫化合物转化为可与化石燃料分离的氧化有机硫化合物的生物催化剂接触; 和（2）从化石燃料中分离氧有机硫化合物。 然后可以将氧有机硫化合物分离，丢弃或进一步加工，例如通过生物催化方法的脱硫或非生物过程如加氢脱硫。

    Multistage process for deep desulfurization of fossil fuels
    3.
    发明授权
    Multistage process for deep desulfurization of fossil fuels 失效
    化石燃料深度脱硫的过程

    公开(公告)号：US5387523A

    公开(公告)日：1995-02-07

    申请号：US99100

    申请日：1993-07-29

    申请人： Daniel J. Monticello

    发明人： Daniel J. Monticello

    IPC分类号： C10G32/00 ,  C10G67/02 ,  C10L1/10 ,  C10L10/00 ,  C12N1/20 ,  C12R1/01 ,  C12S1/02 ,  B66D1/20 ,  C10L5/00 ,  C12S1/00

    CPC分类号： C10G32/00 ,  C10G67/02

    摘要： A method of deeply desulfurizing a fossil fuel which contains a variety of organic sulfur compounds, some of which are labile to hydrodesulfurization (HDS) and some of which are refractory to HDS, comprising the steps of (a) subjecting the fossil fuel to HDS or a similar method of desulfurizing labile organic sulfur compounds, and b) subjecting the fossil fuel to biocatalytic desulfurization (BDS) using a biocatalyst which is capable of selectively liberating sulfur from HDS-refractory organic sulfur compounds. In this manner, a fossil fuel is produced which does not generate sufficient levels of hazardous, sulfur-containing combustion products that it requires post-combustion desulfurization when it is burned. Moreover, the deeply desulfurized fossil fuel can be produced using only a mild HDS treatment, rather than requiring conditions which may be severe enough to be detrimental to the fuel value of the desired product. The biocatalyst employed in the BDS stage of the instant invention is capable of catalyzing the sulfur-specific, oxidative cleavage of organic carbon-sulfur bonds in sulfur-bearing aromatic heterocyclic molecules such as dibenzothiophene. A particularly preferred biocatalyst is a culture of Rhodococcus rhodocrous bacteria, ATCC No. 53968 or its active lysate, extract, fraction or subfraction.

    摘要翻译： 一种深度脱硫化石燃料的方法，其中含有各种有机硫化合物，其中一些对加氢脱硫（HDS）是不稳定的，其中一些对HDS是难治的，包括以下步骤：（a）使化石燃料经受HDS或 脱硫不稳定有机硫化合物的类似方法，以及b）使用能够从HDS难熔有机硫化合物中选择性释放硫的生物催化剂使化石燃料进行生物催化脱硫（BDS）。 以这种方式，产生化石燃料，其不产生足够水平的危险的含硫燃烧产物，其在燃烧时需要燃烧后脱硫。 而且，深度脱硫的化石燃料可以仅使用温和的HDS处理来生产，而不是要求可能严重到不利于所需产品的燃料值的条件。 在本发明的BDS阶段中使用的生物催化剂能够催化含硫芳族杂环分子如二苯并噻吩中的硫特异性氧化裂解有机碳 - 硫键。 特别优选的生物催化剂是Rhodococcus rhodocrous细菌，ATCC No.5398或其活性裂解物，提取物，级分或亚级分的培养物。

    DSZD utilization in desulfurization of DBT by rhodococcus sp. IGTS8
    6.
    发明授权
    DSZD utilization in desulfurization of DBT by rhodococcus sp. IGTS8 失效
    DBZ通过罗红球菌脱硫后的DSZD利用率 IGTS8

    公开(公告)号：US5811285A

    公开(公告)日：1998-09-22

    申请号：US715554

    申请日：1996-09-19

    申请人： Kevin A. Gray ,  Charles H. Squires ,  Daniel J. Monticello

    发明人： Kevin A. Gray ,  Charles H. Squires ,  Daniel J. Monticello

    IPC分类号： C12N15/09 ,  C10G31/00 ,  C10G32/00 ,  C12N1/20 ,  C12N1/21 ,  C12N9/02 ,  C12N9/04 ,  C12N15/52 ,  C12N15/53 ,  C12P1/00 ,  C12R1/01 ,  C12S1/02 ,  C12N15/00 ,  C07H21/04

    CPC分类号： C12N1/20 ,  C10G31/00 ,  C10G32/00 ,  C12N15/52 ,  C12N9/0004 ,  C12N9/0006 ,  C12P1/00 ,  C12R1/01

    摘要： The invention relates to the discovery that the rate of reaction of the desulfurization of fossil fuels is enhanced by the addition of an oxidoreductase to the biocatalyst. The invention is drawn to a method for enhancing the rate of desulfurizing a fossil fuel containing organic sulfur compounds, comprising the steps of: a) contacting the fossil fuel with an aqueous phase containing a biocatalyst capable of cleaving carbon-sulfur bonds and a rate-enhancing amount of an oxidoreductase, thereby forming a fossil fuel and aqueous phase mixture; b) maintaining the mixture of step (a) under conditions sufficient for cleavage of the carbon-sulfur bonds of the organic sulfur molecules by the biocatalyst, thereby resulting in a fossil fuel having a reduced organic sulfur content; and c) separating the fossil fuel having a reduced organic sulfur content from the resulting aqueous phase. The invention also relates to a recombinant microorganism containing one or more recombinant DNA molecules which encode a biocatalyst capable of desulfurizing a fossil fuel containing organic sulfur molecules and which encode an oxidoreductase. The invention also relates to a composition comprising (a) a biocatalyst capable of desulfurizing a fossil fuel containing organic sulfur molecules and (b) an oxidoreductase.

    摘要翻译： 本发明涉及通过向生物催化剂中加入氧化还原酶来提高化石燃料脱硫反应速率的发现。 本发明涉及提高含有机硫化合物的化石燃料脱硫速率的方法，包括以下步骤：a）使化石燃料与含有能够裂解碳 - 硫键的生物催化剂的水相接触， 增加氧化还原酶的量，从而形成化石燃料和水相混合物; b）将步骤（a）的混合物保持在足以通过生物催化剂裂解有机硫分子的碳 - 硫键的条件下，从而导致具有降低的有机硫含量的化石燃料; 和c）从所得水相中分离具有降低的有机硫含量的化石燃料。 本发明还涉及含有一种或多种重组DNA分子的重组微生物，所述重组DNA分子编码能够脱硫含有有机硫分子的化石燃料并编码氧化还原酶的生物催化剂。 本发明还涉及一种组合物，其包含（a）能够使含有机硫分子的化石燃料脱硫的生物催化剂和（b）氧化还原酶。

    Process for the desulfurization and the desalting of a fossil fuel
    8.
    发明授权
    Process for the desulfurization and the desalting of a fossil fuel 失效
    化石燃料的脱硫和脱盐工艺

    公开(公告)号：US5496729A

    公开(公告)日：1996-03-05

    申请号：US298921

    申请日：1994-08-31

    申请人： Daniel J. Monticello

    发明人： Daniel J. Monticello

    IPC分类号： C10G32/00 ,  C12N1/02 ,  C12P1/04 ,  C12R1/01 ,  C12S1/02 ,  C10G29/20 ,  C02F3/00 ,  C02F3/02

    CPC分类号： C12P1/04 ,  C10G32/00 ,  C12R1/01

    摘要： This invention relates to an integrated method for the desulfurization and desalting of a fossil fuel, comprising the steps of: (a) contacting a fossil fuel with; (i) a sufficient amount of an aqueous solution capable of depleting the fossil fuel of forms of water soluble salt contaminants; and (ii) an effective amount of a biocatalyst capable of depleting the fossil fuel of forms of sulfur-bearing organic molecules; (b) incubating the above mixture whereby; (i) the fossil fuel is significantly depleted of forms of water soluble salt contaminants; and (ii) the biocatalytic agent selectively catalyzes carbon-sulfur bonds in sulfur-bearing organic molecules generating a significant amount of water-soluble inorganic sulfur molecules; both reactions occurring without depleting the fossil fuel of combustible organic molecules; and (c) separating the aqueous component from the fossil fuel component, the fossil fuel now being significantly reduced in sulfur and salt contamination and the aqueous component now being significantly enriched with inorganic salts and inorganic sulfur molecules.

    摘要翻译： 本发明涉及一种用于化石燃料脱硫和脱盐的综合方法，包括以下步骤：（a）使化石燃料与 （i）足够量的能够消耗化石燃料形式的水溶性盐污染物的水溶液; 和（ii）有效量的能够耗尽含硫有机分子形式的化石燃料的生物催化剂; （b）培养上述混合物; （i）化石燃料显着耗尽了水溶性盐类污染物的形式; 和（ii）生物催化剂选择性地催化产生大量水溶性无机硫分子的含硫有机分子中的碳 - 硫键; 这两种反应都不会消耗可燃有机分子的化石燃料; 和（c）从矿物燃料成分中分离含水组分，化石燃料现在在硫和盐污染中显着降低，并且水性组分现在显着富含无机盐和无机硫分子。

    Microbial catalyst for desulfurization of fossil fuels
    9.
    发明授权
    Microbial catalyst for desulfurization of fossil fuels 失效
    化石燃料脱硫微生物催化剂

    公开(公告)号：US06124130A

    公开(公告)日：2000-09-26

    申请号：US131685

    申请日：1998-08-10

    申请人： Gregory J. Olson

    发明人： Gregory J. Olson

    IPC分类号： C12Q1/02 ,  C10G32/00 ,  C12N1/20 ,  C12P1/04 ,  C12P3/00 ,  C12P5/00 ,  C12P7/22 ,  C12R1/365 ,  C12S1/02

    CPC分类号： C12R1/365 ,  C12P1/04 ,  C12P3/00 ,  C12P5/00 ,  C12P7/22

    摘要： Sulfur is removed from fossil fuels containing sulfur by incubation of the fuel with microbes isolated and purified from soil or water that selectively extract the sulfur without apparently utilizing the fuel as a carbon or energy source. Preferred biodesulfurization microbes remove at least about 20% of the sulfur. The microbes are obtained in a multi-step screen that first selects microorganisms that utilize dibenzothiophene (DBT) as a sole source of sulfur, and then tests these in incubations with fossil fuels; organisms that desulfurize DBT without metabolizing the DBT phenyl ring structures and desulfurize fuels only when a second carbon source devoid of sulfur is present are identified and employed in desulfurization processes. Two cultures, CDT-4 and CDT-4b, were particularly efficacious in the desulfurization of liquid fossil fuels.

    摘要翻译： 通过将燃料与从土壤或水中分离和纯化的微生物孵育而将硫从含硫的化石燃料中除去，这些微生物选择性地提取硫，而不明显地利用作为碳或能源的燃料。 优选的生物脱硫微生物除去至少约20％的硫。 微生物在多步骤筛选中获得，其首先选择利用二苯并噻吩（DBT）作为唯一硫源的微生物，然后在与化石燃料的温育中进行测试; 在脱硫过程中确定并使用不含DBT苯环结构脱硫DBT和仅在没有硫的第二碳源存在时脱硫燃料的生物体。 两种培养物CDT-4和CDT-4b在液体化石燃料的脱硫中特别有效。