NOBLE METAL CATALYSTS AND PROCESSES FOR REFORMING OF METHANE AND OTHER HYDROCARBONS

    公开(公告)号:US20210171345A1

    公开(公告)日:2021-06-10

    申请号:US17153375

    申请日:2021-01-20

    摘要: Processes for converting methane and/or other hydrocarbons to synthesis gas (i.e., a gaseous mixture comprising H2 and CO) are disclosed, in which at least a portion of the hydrocarbon(s) is reacted with CO2. At least a second portion of the methane may be reacted with H2O (steam), thereby improving overall thermodynamics of the process, in terms of reducing endothermicity (AH) and the required energy input, compared to “pure” dry reforming in which no H2O is present. Catalysts for such processes advantageously possess high activity and thereby can achieve significant levels of methane conversion at temperatures below those used conventionally under comparable conditions. These catalysts also exhibit high sulfur tolerance, in addition to reduced rates of carbon (coke) formation, even in the processing (reforming) of heavier (e.g., naphtha boiling-range or jet fuel boiling-range) hydrocarbons. The robustness of the catalyst translates to high operating stability. A representative catalyst comprises 1 wt-% Pt and 1 wt-% Rh as noble metals, on a cerium oxide support.

    HYDROPYROLYSIS OF BIOMASS-CONTAINING FEEDSTOCKS
    4.
    发明申请
    HYDROPYROLYSIS OF BIOMASS-CONTAINING FEEDSTOCKS 有权
    含生物量的饲料的水解

    公开(公告)号:US20160002540A1

    公开(公告)日:2016-01-07

    申请号:US14321147

    申请日:2014-07-01

    IPC分类号: C10G1/00

    摘要: Various techniques are disclosed for pretreating municipal solid waste (MSW) and other biomass-containing feedstocks that may be of a poorer quality and consequently more difficult, or even impossible, to convert to higher value liquid products (e.g., transportation fuels) using conventional processes. Such conventional processes may otherwise be satisfactory for the conversion of the biomass portion of the feedstock alone. The pretreatment of biomass-containing feedstocks may generally include steps carried out prior to a hydropyrolysis step and optionally further steps, in order to change one or more characteristics of the feedstock, rendering it more easily upgradable.

    摘要翻译: 公开了各种技术用于预处理城市固体废物(MSW)和其他可能具有较差质量的生物质原料,因此更难或甚至不可能使用常规方法转化为更高价值的液体产品(例如运输燃料) 。 否则这种常规方法可能对于单独的原料的生物质部分的转化是令人满意的。 含生物质的原料的预处理通常可以包括在加氢热解步骤之前进行的步骤和任选的进一步的步骤,以改变原料的一种或多种特性,使其更容易升级。

    PROCESSES AND SYSTEMS FOR REFORMING OF METHANE AND LIGHT HYDROCARBONS TO LIQUID HYDROCARBON FUELS

    公开(公告)号:US20190144765A1

    公开(公告)日:2019-05-16

    申请号:US15813814

    申请日:2017-11-15

    摘要: Processes for converting methane and/or other hydrocarbons to synthesis gas (i.e., a gaseous mixture comprising H2 and CO) are disclosed, in which at least a portion of the hydrocarbon(s) is reacted with CO2. At least a second portion of the methane may be reacted with H2O (steam), thereby improving overall thermodynamics of the process, in terms of reducing endothermicity (ΔH) and the required energy input, compared to “pure” dry reforming in which no H2O is present. Such dry reforming (reaction with CO2 only) or CO2-steam reforming (reaction with both CO2 and steam) processes are advantageously integrated with Fischer-Tropsch synthesis to yield liquid hydrocarbon fuels. Further integration may involve the use of a downstream finishing stage involving hydroisomerization to remove FT wax. Yet other integration options involve the use of combined CO2-steam reforming and FT synthesis stages (optionally with finishing) for producing liquid fuels from gas streams generated in a number of possible processes, including the hydropyrolysis of biomass.

    USE OFCARBON DIOXIDE GENERATED BY HYDROPYROLYSIS FOR PROCESS INERTIZATION
    6.
    发明申请
    USE OFCARBON DIOXIDE GENERATED BY HYDROPYROLYSIS FOR PROCESS INERTIZATION 有权
    使用氢过氧化物生成的二氧化碳进行过程自动化

    公开(公告)号:US20160068758A1

    公开(公告)日:2016-03-10

    申请号:US14479246

    申请日:2014-09-05

    摘要: A hydropyrolysis process comprises feeding both (i) hydrogen and (ii) a biomass-containing feedstock or a biomass-derived feedstock, to a hydropyrolysis reactor vessel. The process comprises producing a CO2-containing vapor stream and at least one liquid product. A CO2 product, separated from the CO2-containing vapor stream, is advantageously used for at least one inertization function of the hydropyrolysis process. Representative inertization functions include operation of solids transport equipment, blanketing of liquid containers, drying of biomass-containing feedstock or biomass-derived feedstock, conveying or separating solids, and combinations thereof. Importantly, CO2 products utilized for these inertization functions may be obtained predominantly, if not completely (depending on the nature of the feedstock), from renewable carbon in biomass.

    摘要翻译: 加氢热解过程包括将(i)氢和(ii)含生物质的原料或生物质衍生的原料进料到加氢热解反应器容器中。 该方法包括产生含CO 2的蒸汽流和至少一种液体产物。 与含CO 2的蒸汽流分离的CO 2产物有利地用于加氢热解过程的至少一种惰性化功能。 代表性的惰性化功能包括固体输送设备的操作,液体容器的覆盖,含生物质的原料或生物质衍生的原料的干燥,输送或分离固体及其组合。 重要的是,用于这些惰性化功能的二氧化碳产品可以主要地从生物质中的可再生碳获得,如果不是完全(取决于原料的性质)。

    HYDRODEOXYGENATION OF OXYGENATED POLYMERS TO LIQUID HYDROCARBONS

    公开(公告)号:US20210348063A1

    公开(公告)日:2021-11-11

    申请号:US17182783

    申请日:2021-02-23

    IPC分类号: C10G3/00 B01J23/85 C08J11/16

    摘要: Process are disclosed for converting plastics, and especially thermoplastic oxygenated polymers, by hydrodeoxygenation (HDO) to hydrocarbons, such as aromatic hydrocarbons including benzene, toluene, ethylbenzene, and xylene isomers. These hydrocarbons may be recovered as chemicals and/or fuels, depending on the particular chemical structures of the starting materials, including the presence of oxygen in the polymer backbones. Advantageously, using a sufficiently active catalyst, only moderate conditions, such as in terms of hydrogen partial pressure, are required, in comparison to known hydrotreating processes. This leads to the formation, with fewer non-selective side reactions, of desired liquid hydrocarbons from substantially all carbon in the oxygenated polymer, as well as water from substantially all oxygen in the oxygenated polymer. In some cases, the liquid hydrocarbons obtained are platform chemicals that can be used for a number of specialized purposes. For example, they may be converted to monomers for regenerating the oxygenated polymer or otherwise for producing a different polymer.

    PRODUCTION OF LIQUIDS AND REDUCED SULFUR GASEOUS PRODUCTS FROM SOUR NATURAL GAS

    公开(公告)号:US20190210941A1

    公开(公告)日:2019-07-11

    申请号:US15867902

    申请日:2018-01-11

    摘要: Aspects of the invention are associated with the discovery of approaches for the conversion of sour natural gas streams, by conversion to liquid hydrocarbons. Particular processes and their associated apparatuses advantageously combine (i) dehydroaromatization (DHA) of methane in a gaseous feedstock, to produce aromatic hydrocarbons such as benzene, with (ii) the reaction of H2S and methane in this feedstock, to produce organic sulfur compounds such as carbon disulfide (CS2) and thiophene (C4H4S). A gaseous product having a reduced concentration of H2S is thereby generated. The aromatic hydrocarbons and organic sulfur compounds may be recovered in a liquid product. Both the gaseous and liquid products may be easily amenable to further upgrading. Other advantages of the disclosed processes and apparatuses reside in their simplicity, whereby the associated streams, including a potential gaseous recycle, generally avoid high partial pressures of H2S.

    ACTIVATED CARBON AS A HIGH VALUE PRODUCT OF HYDROPYROLYSIS

    公开(公告)号:US20170137294A1

    公开(公告)日:2017-05-18

    申请号:US14940024

    申请日:2015-11-12

    摘要: Hydropyrolysis processes that accompany the generation of activated carbon as an end product, as well as processes for the production of activated carbon from hydropyrolysis char, are described. Representative processes comprise upgrading, by steam activation, char that is formed from solid biomass-containing feedstocks and/or solid biomass derived feedstocks, such as lignocellulosic feedstocks (e.g., wood). Such processes are associated with a number of advantages in terms of achieving operating synergies, obtaining desirable intermediate material and end product properties, reducing environmental impact, and significantly improving economic attractiveness.