SYNTHESIS GAS TO HYDROCARBON PROCESSES WITH NEUTRAL OR NEGATIVE CARBON DIOXIDE SELECTIVITY

    公开(公告)号:US20230052682A1

    公开(公告)日:2023-02-16

    申请号:US17788144

    申请日:2020-12-02

    IPC分类号: C07C1/04

    摘要: A process for preparing C2 to C4 hydrocarbons includes introducing a feed stream into a reaction zone of a reactor, the feed stream comprising hydrogen gas and carbon monoxide. An additional stream is introduced into the reaction zone of the reactor, the additional stream comprising carbon dioxide. A combined stream that includes the feed stream and the additional stream is converted into a product stream comprising C2 to C4 hydrocarbons in the reaction zone in the presence of a hybrid catalyst. The hybrid catalyst includes a mixed metal oxide catalyst component, and a microporous catalyst component. The process operates at a gas hourly space velocity in excess of 2500 hr-1 and effectively yields a net carbon dioxide selectivity of less than 5.0% and a productivity of C2-C4 hydrocarbons greater than 75 g hydrocarbons per kilogram of catalyst per hour.

    METHOD AND APPARATUS FOR TREATING CARBONACEOUS MATERIAL

    公开(公告)号:US20220315470A1

    公开(公告)日:2022-10-06

    申请号:US17639304

    申请日:2020-09-04

    摘要: A method for treating carbonaceous material, the method includes a) providing a first carbonaceous material CM1 contaminated with micro-pollutants and/or microplastics, and providing a second carbonaceous material CM2 free of micro-pollutants or microplastics, b) subjecting the first carbonaceous material CM1 to hydrothermal gasification in a HTG reactor, thereby producing an inorganic solid residue, a first gaseous fraction G1 comprising CH4, CO, CO2 and H2 and a filtrate F1 free of micro-pollutants or microplastics optionally containing readily biodegradable carbons such as VFAs, c) subjecting the second carbonaceous material CM2 together with at least part of the filtrate F1 to an anaerobic treatment step in an anaerobic tank, leading to a digestate free of micro-pollutants or microplastics and optionally a second gaseous fraction G2 containing CH4 and CO2. An installation for treating carbonaceous material is also provided.

    Process for the conversion of plastics into olefins

    公开(公告)号:US11459507B2

    公开(公告)日:2022-10-04

    申请号:US17273394

    申请日:2019-08-09

    申请人: NEXTCHEM S.P.A.

    摘要: Process for the conversion of plastics to olefins comprising the following steps: A) gasification of the plastics to synthesis gas by reaction of the plastics with pure oxygen; B) catalytic conversion of the synthesis gas produced in stage A) to methane in at least three successive stages, in each of which hydrogen is added; C) catalytic conversion of the methane produced in stage B) into olefins by the oxidative coupling reaction of methane; and D) separation of the olefins produced in stage C) from other compounds present in the reaction mixture of said stage C).

    PARALLEL REFORMING IN CHEMICAL PLANT

    公开(公告)号:US20220081291A1

    公开(公告)日:2022-03-17

    申请号:US17421449

    申请日:2020-02-27

    摘要: A chemical plant including: a reforming section arranged to receive a feed gas comprising hydrocarbons and provide a combined synthesis gas stream, wherein the reforming section includes: an electrically heated reforming reactor housing a first catalyst, an autothermal reforming reactor in parallel with the electrically heated reforming reactor, wherein the reforming section is arranged to output a combined synthesis gas stream including at least part of the first and/or second synthesis gas streams, an optional post processing unit downstream the reforming section, a gas separation unit arranged to separate a synthesis gas stream into a water condensate and an intermediate synthesis gas, and a downstream section arranged to receive the intermediate synthesis gas and to process the intermediate synthesis gas to a chemical product and an off-gas. Also, a process for producing a chemical product from a feed gas comprising hydrocarbons.

    PROCESS FOR PREPARING C2-C5 HYDROCARBONS USING A HYBRID CATALYST

    公开(公告)号:US20220055968A1

    公开(公告)日:2022-02-24

    申请号:US17275738

    申请日:2019-05-09

    IPC分类号: C07C1/12 C07C1/04 B01J29/85

    摘要: A process for preparing C2 to C5 hydrocarbons includes introducing a feed stream into a reaction zone of a reactor, the feed stream including hydrogen gas and carbon monoxide. An additional stream is introduced into the reaction zone of the reactor, the additional stream comprising water, carbon dioxide, or mixtures thereof. A combined stream that includes the feed stream and the additional stream is converted into a product stream comprising C2 to C5 hydrocarbons in the reaction zone in the presence of a hybrid catalyst. The hybrid catalyst includes a metal oxide catalyst component, and a microporous catalyst component.