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    Method of hydrogasification of biomass to methane with low depositable tars
    2.
    发明授权
    Method of hydrogasification of biomass to methane with low depositable tars 有权
    生物质加氢气化为甲烷与低沉积焦炭的方法

    公开(公告)号：US08674153B2

    公开(公告)日：2014-03-18

    申请号：US13750757

    申请日：2013-01-25

    Applicant: G4 Insights Inc.

    Inventor： Brian G. Sellars ,  Matthew L. Babicki ,  Bowie G. Keefer ,  Edson Ng

    IPC: C07C7/20

    CPC classification number: C10L3/08 ,  C10G3/40 ,  C10G3/42 ,  C10G3/50 ,  C10G45/08 ,  C10G2300/1014 ,  C10G2300/202 ,  C10G2300/4006 ,  C10G2300/4012 ,  C10G2400/02 ,  C10G2400/30 ,  C10L2230/04 ,  C10L2290/02 ,  C10L2290/08 ,  C10L2290/141 ,  C10L2290/50 ,  C10L2290/54 ,  Y02P30/20

    Abstract: A method for converting lignocellulosic biomass to a useful fuel is disclosed in a process sequence resulting in low levels of depositable tars in an output gas stream. One disclosed embodiment comprises performing a sequence of steps at elevated pressure and elevated hydrogen partial pressure, including fast (or flash) hydropyrolysis of a lignocellulosic biomass feed followed sequentially with catalytically enhanced reactions for the formation of methane operating at moderate temperatures of from about 400° C. to about 650° C. under moderately elevated pressure (about 5 atm to about 50 atm). A temperature rise in the catalyst above pyrolysis temperature is achieved without the addition of air or oxygen. Gas residence time at elevated temperature downstream of methane formation zones extends beyond the time required for methane formation. This sequence results in low tar deposit levels. The catalyst promotes preferential formation of methane and non-deposit forming hydrocarbons, and coke re-gasification.

    Abstract translation: 将木质纤维素生物质转化为有用燃料的方法在工艺顺序中公开，导致输出气流中可沉积的焦油含量低。 一个公开的实施方案包括在升高的压力和升高的氢分压下进行一系列步骤，包括木质纤维素生物质进料的快速（或快速）加氢热解，然后依次具有用于在约400℃的中等温度下生成甲烷的催化增强反应 在约升高的压力（约5大气压至约50大气压）下升温至约650℃。 在不增加空气或氧气的情况下，实现催化剂在高于热解温度的温度升高。 在甲烷形成区下游的高温下的气体停留时间超出甲烷形成所需的时间。 该顺序导致低焦油沉积物含量。 催化剂促进甲烷和非沉积物形成烃的优先形成，并且焦炭再气化。

    Sorption enhanced methanation of biomass
    3.
    发明授权
    Sorption enhanced methanation of biomass 有权

    公开(公告)号：US10653995B2

    公开(公告)日：2020-05-19

    申请号：US15704918

    申请日：2017-09-14

    Applicant: G4 Insights Inc.

    Inventor： Bowie G. Keefer ,  Matthew L. Babicki ,  Brian G. Sellars ,  Edson Ng

    IPC: B01D53/047 ,  B01D53/22 ,  C01B3/38 ,  C10L3/08 ,  C10L3/10 ,  C10J3/46 ,  C10K1/02 ,  C10K1/32 ,  C10K3/04 ,  C10B49/22 ,  C10B53/02 ,  C10B57/06

    Abstract: Disclosed embodiments provide a system and method for producing hydrocarbons from biomass. Certain embodiments of the method are particularly useful for producing substitute natural gas from forestry residues. Certain disclosed embodiments of the method convert a biomass feedstock into a product hydrocarbon by hydropyrolysis. Catalytic conversion of the resulting pyrolysis gas to the product hydrocarbon and carbon dioxide occurs in the presence of hydrogen and steam over a CO2 sorbent with simultaneous generation of the required hydrogen by reaction with steam. A gas separator purifies product methane, while forcing recycle of internally generated hydrogen to obtain high conversion of the biomass feedstock to the desired hydrocarbon product. While methane is a preferred hydrocarbon product, liquid hydrocarbon products also can be delivered.

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