METHOD OF EXTENDING BIOMASS CONVERSION CATALYST LIFE

    公开(公告)号:US20170166502A1

    公开(公告)日:2017-06-15

    申请号:US15378099

    申请日:2016-12-14

    Abstract: A method of extending the catalyst life of a hydrogenolysis catalyst activity in the presence of biomass and aqueous solution is described. Lignocellulosic biomass solids and aqueous solution is provided to in a hydrothermal digestion unit in the presence of a digestive solvent, and a supported hydrogenolysis catalyst containing (a) sulfur, (b) Mo or W, and (c) Co, Ni or mixture thereof, incorporated into a solid metal oxide support. The lignocellulosic biomass solids in the hydrothermal digestion unit is heated to a temperature in the range of 180° C. to less than 300° C. in the presence of digestive solvent, hydrogen, and in the range of 0.15 wt. % to 12.5 wt. %, based on catalyst, of H2S or H2S source at least partially soluble in aqueous solution, and the supported hydrogenolysis catalyst forming a product solution containing plurality of oxygenated hydrocarbons, the hydrothermal digestion unit maintaining protective sulfur concentration.

    BIOMASS DIGESTER WITH TWO LIQUID PHASES AND DRAFT TUBE CIRCULATION
    6.
    发明申请
    BIOMASS DIGESTER WITH TWO LIQUID PHASES AND DRAFT TUBE CIRCULATION 审中-公开
    具有两个液相的生物质吸收剂和管道循环

    公开(公告)号:US20170037072A1

    公开(公告)日:2017-02-09

    申请号:US15227990

    申请日:2016-08-04

    Abstract: A method comprises introducing biomass solids to a digester comprising a reactor, a circulation system including a first injector; providing a catalyst-containing digestion medium and an organic solvent layer floating thereon; circulating the medium through the circulation system; flowing gas through the medium; keeping the medium hot enough to digest the solids; and operating the digester such a headspace exists above the solvent. The digester includes a first eductor having an inlet in the headspace, a second eductor having an inlet in the organic layer, and a downdraft tube having an inlet in the digestion medium. A motive fluid flowing from the first injector draws gas from the headspace into the first eductor, a motive fluid flowing from the first eductor draws fluid from the organic layer into the second eductor, and a motive fluid flowing from the second eductor draws fluid from the digestion medium into the downdraft tube.

    Abstract translation: 一种方法包括将生物质固体引入包括反应器的消化器,包括第一注射器的循环系统; 提供含催化剂的消化介质和浮在其上的有机溶剂层; 使介质循环通过循环系统; 流过气体通过介质; 保持培养基足够热量消化固体; 并且操作蒸煮器这样的顶部空间存在于溶剂上方。 蒸煮器包括在顶部空间中具有入口的第一喷射器,在有机层中具有入口的第二喷射器和在消化介质中具有入口的向下流动管。 从第一喷射器流动的运动流体将气体从顶部空间吸入第一喷射器,从第一喷射器流动的运动流体将流体从有机层吸入第二喷射器,并且从第二喷射器流出的运动流体从 消化介质进入下降管。

    PROCESS FOR CONVERSION OF A CELLULOSIC MATERIAL

    公开(公告)号:US20170175018A1

    公开(公告)日:2017-06-22

    申请号:US15386069

    申请日:2016-12-21

    Abstract: A process for the high temperature conversion of a cellulosic material into a bio-oil, wherein, under hydrogen atmosphere and in the presence of a catalyst, the cellulosic material is contacted in a reaction vessel with a liquid solvent, wherein water is present from 5% up to 80 wt %, based on the total amount of cellulosic material and liquid solvent present in the vessel, at an a controlled operating pressure of from equal to or more than 2.0 MPa to equal to or less than 13.0 MPa, wherein the partial hydrogen pressure contributes from equal to or more than 1.0 MPa to equal to or less than 6.0 MPa, and the total vapour pressure being lower than the autogenous pressure at the operating temperature and contributing in the range of from equal to or more than 1.0 MPa to equal to or less than 7.0 MPa, to produce a product mixture comprising bio-oil.

Patent Agency Ranking