Cyclic process for producing taurine from monoethanolamine

    公开(公告)号:US11161808B1

    公开(公告)日:2021-11-02

    申请号:US17015909

    申请日:2020-09-09

    Inventor: Songzhou Hu

    Abstract: There is disclosed a cyclic process for producing taurine from monoethanolamine comprising the steps of: (a) reacting monoethanolamine with ammonium sulfate in the recycling mother liquor to yield monoethanolamine sulfate; (b) reacting the monoethanolamine sulfate with sulfuric acid to form 2-aminoethyl hydrogen sulfate ester; (c) subjecting the 2-aminoethyl hydrogen sulfate ester to a sulfonation reaction with ammonium sulfite to yield taurine and ammonium sulfate; (d) separating the taurine and the ammonium sulfate by means of solid-liquid separation; (e) removing the excess ammonium sulfite from the mother liquor to obtain an aqueous solution comprised of ammonium sulfate and (f) returning the aqueous solution to step (a) to complete the cyclic process.

    Process for Producing Fluorosulfuric Acid Aromatic-Ring Esters
    9.
    发明申请
    Process for Producing Fluorosulfuric Acid Aromatic-Ring Esters 有权
    生产氟磺酸芳香环酯的方法

    公开(公告)号:US20140114088A1

    公开(公告)日:2014-04-24

    申请号:US14128362

    申请日:2012-06-15

    CPC classification number: C07C303/24 C07C305/26

    Abstract: A production process of a fluorosulfuric acid aromatic-ring ester according to the present invention includes reaction of an aromatic-ring hydroxyl compound with sulfuryl fluoride (SO2F2) in the presence of a tertiary amine except pyridine and methylpyridine. The sulfuryl fluoride, used as the reactant in the production process according to the present invention, is widely adapted as a fumigant and is easily available on a large scale. Further, the target compound can be obtained rapidly with a high yield under moderate reaction conditions in the production process according to the present invention. In this way, all of the prior art problems can be solved in the production process according to the present invention. The production process according to the present invention is thus particularly useful for industrial production of the fluorosulfuric acid aromatic-ring ester.

    Abstract translation: 根据本发明的氟代硫酸芳环酯的制备方法包括在除吡啶和甲基吡啶之外的叔胺存在下,芳环羟基化合物与硫酰氟(SO 2 F 2)的反应。 在根据本发明的生产方法中用作反应物的硫酰氟被广泛地用作熏蒸剂,并且容易获得大量。 此外,在本发明的制造方法中,在中等反应条件下,可以快速获得目标化合物。 以这种方式,可以在根据本发明的制造方法中解决所有现有技术问题。 因此,本发明的制造方法特别适用于氟代硫酸芳香环酯的工业化生产。

    Method of Manufacture of Guerbet Alcohols For Making Surfactants Used In Petroleum Industry Operations
    10.
    发明申请
    Method of Manufacture of Guerbet Alcohols For Making Surfactants Used In Petroleum Industry Operations 审中-公开
    制造用于制造石油工业操作中使用的表面活性剂的格尔贝特醇的方法

    公开(公告)号:US20130068457A1

    公开(公告)日:2013-03-21

    申请号:US13233406

    申请日:2011-09-15

    CPC classification number: C07C303/24 C07C305/10

    Abstract: A method is disclosed for manufacturing surfactants for utilization in petroleum industry operations. The method comprises providing a bio-lipid. The bio-lipid can include one or more medium-chain or long-chain fatty acids, such as Lauric acid, Myristic acid, Palmitic acid, Stearic acid, Palmitoleic acid, Oleic acid, Ricinoleic acid, Vaccenic acid, Linoleic acid, Alpha-Linoleic acid, or Gamma-Linolenic acid. Fatty acid alkyl esters are produced by reacting the bio-lipid with a low-molecular weight alcohol. The fatty acid alkyl esters are reduced to a fatty alcohol. The fatty alcohol is dimerized to form a Guerbet alcohol, which is a precursor to producing surfactant for utilization in a petroleum industry operation, such as an enhanced oil recovery process.

    Abstract translation: 公开了用于制造用于石油工业操作的表面活性剂的方法。 该方法包括提供生物脂质。 生物脂质可以包括一种或多种中链或长链脂肪酸,例如月桂酸,肉豆蔻酸,棕榈酸,硬脂酸,棕榈油酸,油酸,蓖麻油酸,烟酸,亚油酸, 亚油酸或γ-亚麻酸。 脂肪酸烷基酯是通过使生物脂质与低分子量酒精反应制备的。 将脂肪酸烷基酯还原成脂肪醇。 脂肪醇被二聚化以形成格尔伯特醇,其是用于生产用于石油工业操作的表面活性剂的前体,例如增强的油回收方法。

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