Method for improving Fischer-Tropsch synthesis and recycling exhaust gases therefrom
    42.
    发明授权
    Method for improving Fischer-Tropsch synthesis and recycling exhaust gases therefrom 有权
    费 - 托合成和废气再循环的方法

    公开(公告)号:US09255226B2

    公开(公告)日:2016-02-09

    申请号:US14571240

    申请日:2014-12-15

    摘要: A method for improving Fischer-Tropsch synthesis and recycling exhaust gases therefrom. The method includes: 1) transforming raw gas for Fischer-Tropsch synthesis using a water-gas shift reaction, transporting the transformed raw gas to a Fischer-Tropsch synthesis device for Fischer-Tropsch synthesis in the presence of a Fe-based or Co-based catalyst; 2) introducing exhaust gases from the Fischer-Tropsch synthesis device to a first pressure-swing adsorber for hydrogen recovery; 3) introducing the exhaust gases from 2) to a second pressure-swing adsorber for methane recovery; 4) returning part of the hydrogen obtained from 2) to 1) to mix with the raw gas, and transforming a resulting mixed gas to adjust a hydrogen/carbon ratio of the raw gas; and 5) introducing the methane in 3) to a methane reforming device to reform the methane whereby yielding syngas having relatively high hydrogen/carbon ratio, and transporting the syngas to 1) to mix with the raw gas.

    摘要翻译: 费 - 托合成和废气再循环的方法。 该方法包括:1)使用水煤气变换反应转化费 - 托合成的原料气体,在Fe基或Co-Fe合金存在下,将转化后的原料气转移至费 - 托合成装置进行费 - 托合成, 基催化剂; 2)将来自费 - 托合成装置的废气引入第一变压吸附器进行氢回收; 3)将来自2)的废气引入用于甲烷回收的第二变压吸附器; 4)将从2)获得的部分氢气返回到1)与原料气体混合,转化所得混合气体以调节原料气体的氢/碳比; 和5)在甲烷重整装置中将甲烷引入甲烷重整装置以重整甲烷,由此产生具有相对较高氢/碳比的合成气,并将合成气输送至1)与原料气体混合。

    METHOD FOR PREPARING SURFACE-MODIFIED NANOSILICON DIOXIDE FROM RICE HULLS
    44.
    发明申请
    METHOD FOR PREPARING SURFACE-MODIFIED NANOSILICON DIOXIDE FROM RICE HULLS 有权
    从米糠中制备表面改性的纳米二氧化二氮的方法

    公开(公告)号:US20150119595A1

    公开(公告)日:2015-04-30

    申请号:US14569771

    申请日:2014-12-14

    IPC分类号: C07F7/02

    CPC分类号: C07F7/025 B82Y40/00 C01B33/18

    摘要: A method for preparing surface-modified nano silicon dioxide from rice hulls. The method includes: 1) pretreating rice hulls using a treating gas containing CO2 to remove metal ions, impurities, and dusts, and desiccating and grinding the rice hulls; 2) submerging the rice hulls into a dilute solution of phosphoric acid, boric acid, hydrochloric acid, formic acid, acetic acid, propionic acid, butyric acid, or a strong-acid-weak-base salt for between 4 and 8 hrs, controlling the immersion temperature not to exceed 10° C., leaching a resulting mixture, removing a filtrate, and desiccating the rice hulls; and 3) calcining the rice hulls in the absence of oxygen at a temperature of between 300 and 450° C.

    摘要翻译: 一种从稻壳中制备表面改性纳米二氧化硅的方法。 该方法包括:1)使用含CO2处理气体去除稻壳,去除金属离子,杂质和粉尘,干燥和研磨米壳; 2)将稻壳浸入磷酸,硼酸,盐酸,甲酸,乙酸,丙酸,丁酸或强酸 - 弱碱盐的稀溶液中4〜8小时,控制 浸渍温度不超过10℃,浸出得到的混合物,除去滤液,干燥稻壳; 和3)在300-450℃的温度下,在不存在氧的情况下煅烧稻壳。

    Method for hydrofining of middle distillates of Fischer-Tropsch synthetic full-range distillates

    公开(公告)号:US10450519B2

    公开(公告)日:2019-10-22

    申请号:US15693467

    申请日:2017-08-31

    摘要: A method for hydrofining of middle distillates of Fischer-Tropsch synthetic full-range distillates, the method including: 1) separating middle distillates of Fischer-Tropsch synthetic full-range distillates to yield light distillates, heavy distillates and intermediate distillates; 2) metering the light distillates, the heavy distillates and the intermediate distillates; providing a hydrogenation reactor filled with a hydrofining catalyst and including a first feed inlet, a second feed inlet and a third feed inlet from the top down; mixing hydrogen and the light distillates, the heavy distillates and the intermediate distillates, respectively, and introducing resulting mixtures to the hydrogenation reactor via the first feed inlet, the second feed inlet and the third feed inlet, respectively; and 3) introducing products from 2) to a gas-liquid separator to yield hydrogen and liquid products, returning the hydrogen to the hydrogenation reactor, and introducing the liquid products to a fractionating column for further separation.