Method of performing an oxidation reaction
    1.
    发明授权
    Method of performing an oxidation reaction 失效
    进行氧化反应的方法

    公开(公告)号:US4766208A

    公开(公告)日:1988-08-23

    申请号:US883695

    申请日:1986-07-08

    CPC分类号: C07H9/04

    摘要: A method of performing an oxidation reaction in which an alkali hypohalite is used as an oxidizing agent which comprises: carrying out the oxidation reaction in an aqueous medium with concurrently distilling off a solvent used in the reaction as the reaction proceeds under a reduced pressure.The method is in particular useful for the oxidation of diacetone-L-sorbose to diacetone-2-keto-L-gulonic acid in water. The reaction temperature is so accurately controlled that the same optimum yield of diacetone-2-keto-L-gulonic acid is obtained by the use of a reduced amount of sodium hypochlorite as compared with the conventional manner of reaction under atmospheric pressure.

    摘要翻译: 一种进行氧化反应的方法,其中使用碱性次卤酸盐作为氧化剂,该方法包括:随着反应在减压下进行,同时蒸除反应中使用的溶剂,在水性介质中进行氧化反应。 该方法特别可用于将双丙酮-L-山梨糖氧化成双丙酮-2-酮-L-古洛糖酸在水中。 反应温度如此精确地控制,与通常的大气压反应方式相比,通过使用减少量的次氯酸钠可以获得相同的最佳产量的双丙酮-2-酮-L-古洛糖酸。

    Process for hydrogenatively treating petroleum distillation residual oils
    2.
    发明授权
    Process for hydrogenatively treating petroleum distillation residual oils 失效
    用于氢处理石油蒸馏残油的方法

    公开(公告)号:US5403471A

    公开(公告)日:1995-04-04

    申请号:US997420

    申请日:1992-12-28

    CPC分类号: C10G32/02 C10G67/02

    摘要: A process is disclosed for refining distillation residual fractions of a crude petroleum oil. The process employs a high gradient magnetic separator for magnetically depositing iron impurities from such distillation residual oil onto a ferromagnetic filler in the separator. The ferromagnetic filler is cleaned at predetermined intervals by a selected class of washing liquids so that the refining operation can be carried out continually.

    摘要翻译: 公开了一种用于精炼石油精馏馏分残余馏分的方法。 该方法采用高梯度磁选机将铁蒸汽残留油中的铁杂质磁性沉积到分离器中的铁磁性填料上。 铁氧体填料通过选定类型的洗涤液以预定间隔进行清洁,从而可以连续进行精炼操作。

    Supply system of petroleum heavy oil containing magnetic fine particles
    3.
    发明授权
    Supply system of petroleum heavy oil containing magnetic fine particles 失效
    石油重油供应系统含有磁性细颗粒

    公开(公告)号:US5543041A

    公开(公告)日:1996-08-06

    申请号:US256142

    申请日:1994-07-06

    CPC分类号: C10G67/02 C10G32/02

    摘要: The present invention relates to a supply system for pre-treating a petroleum distillation residual oil to be fed to a hydrogenation apparatus. In order to remove iron fine particles having a particle size of less than 25.mu. in the feed oil which could be not removed in the prior art, by constituting a system comprising a heater for heating the feed oil to a given temperature by heat exchange with a high temperature bottom oil of a fractionating tower after hydrogenation treatment of the feed oil, a filter equipped with a back washing mechanism for filtering solid materials in the feed oil after heating, and a high gradient magnetic separator for magnetically separating magnetic iron fine particles having a particle size of less than 25.mu. contained in the feed oil. By the use of the above bottom oil of the fractionating distillation tower as a washing oil of the high gradient magnetic separator, iron fine particles in the feed oil were able to be removed by repeating an iron removing operation and a washing operation. By the use of this supply system for pre-treating the feed oil, iron fine particles attributable to clog and deterioration of a catalyst layer of the hydrogenation apparatus can be reduced, thereby the time capable of continuous running of the conventional hydrogenation apparatus can be extended.

    摘要翻译: PCT No.PCT / JP93 / 01634 Sec。 371日期:1994年7月6日 102(e)日期1994年7月6日PCT 1993年11月10日PCT公布。 公开号WO94 / 11463 日期:1994年5月26日本发明涉及一种用于预处理供给氢化装置的石油蒸馏残油的供给系统。 为了在现有技术中除去可以不去除的原料油中的粒径小于25μm的铁微粒子,通过构成一种系统,该系统包括一个加热器,该加热器用于将进料油通过与 在进料油氢化处理后的分馏塔的高温底油,配备有用于过滤加热后的进料油中的固体物质的反洗机构的过滤器和用于磁分离磁性铁微粒的高梯度磁选机, 进料油中所含的小于25微米的粒度。 通过使用上述分馏塔的底部油作为高梯度磁选机的洗涤油,可以通过重复除铁操作和洗涤操作来除去进料油中的铁微粒。 通过使用该供给系统对原料油进行预处理,可以减少归因于加氢装置的阻塞和催化剂层劣化的铁细颗粒,从而可以延长常规氢化装置的连续运行时间 。

    Process for removing iron impurities from petroleum oil distillation
residues
    5.
    发明授权
    Process for removing iron impurities from petroleum oil distillation residues 失效
    从石油蒸馏残渣中除去铁杂质的方法

    公开(公告)号:US5607575A

    公开(公告)日:1997-03-04

    申请号:US300257

    申请日:1994-09-02

    IPC分类号: C10G32/02 C10G29/04

    CPC分类号: C10G32/02

    摘要: A process for removing iron impurities, inter alia iron or iron compounds, from petroleum oil distillation residues is disclosed in which a high gradient magnetic separator incorporates a pack of ferromagnetic fillers in the form of a generally flat or curved sheet-like strip. The ferromagnetic filler is a Fe--Cr alloy of a selected composition and the strip is of selected geometric characteristics such that the rate of removal of iron impurities can be maintained substantially at a maximum throughout the separation mode of operation prior to and after washing of the ferromagnetic filler.

    摘要翻译: 公开了一种用于从石油蒸馏残渣中除去铁杂质,尤其是铁或铁化合物的方法,其中高梯度磁选机包含大体平坦或弯曲的片状条形式的一组铁磁填料。 铁磁填料是所选组合物的Fe-Cr合金,并且带材具有选定的几何特性,使得在洗涤之前和之后,在整个分离操作模式下,铁杂质的除去速率可以基本维持在最大值 铁磁填料。