Processing and gasification of construction and demolition materials

    公开(公告)号:US12157863B2

    公开(公告)日:2024-12-03

    申请号:US18050950

    申请日:2022-10-28

    Abstract: Methods and systems for processing construction and demolition (C&D) materials to produce a product gas stream and/or electricity are disclosed herein. In some embodiments, the method comprises pre-processing C&D materials to produce a C&D feed, and processing the C&D feed to produce syngas. The C&D feed can comprise untreated wood, treated wood, paper and cardboard, yard waste, plastic, rubber, and/or foam. Processing the C&D feed can comprise gasifying the C&D feed, steam, and oxygen in a gasifier at a temperature of no more than 950° C. and/or a pressure of no more than 200 psi to produce syngas.

    Producing Synthetic Gas
    4.
    发明公开

    公开(公告)号:US20240052252A1

    公开(公告)日:2024-02-15

    申请号:US18494356

    申请日:2023-10-25

    Abstract: A syngas production system includes a gasification reactor and a syngas pressure vessel downstream of the gasification reactor. The syngas pressure vessel includes a pressure vessel having a body with a first portion and a second portion. The syngas pressure vessel also includes an evaporator disposed in the pressure vessel; a coil disposed in the pressure vessel; and a tongue-and-groove flange assembly. The tongue-and-groove flange assembly includes: a first flange with a raised ring extending from a face of the first flange, the first flange attached to the first portion of the body; a second flange with a groove defined in a face of the second flange. The second flange is attached to the second portion of the body. The raised ring extends from the face of the first flange and is positioned in the groove defined in the face of the second flange.

    PROCESSING AND GASIFICATION OF CONSTRUCTION AND DEMOLITION MATERIALS

    公开(公告)号:US20230132767A1

    公开(公告)日:2023-05-04

    申请号:US18050950

    申请日:2022-10-28

    Abstract: Methods and systems for processing construction and demolition (C&D) materials to produce a product gas stream and/or electricity are disclosed herein. In some embodiments, the method comprises pre-processing C&D materials to produce a C&D feed, and processing the C&D feed to produce syngas. The C&D feed can comprise untreated wood, treated wood, paper and cardboard, yard waste, plastic, rubber, and/or foam. Processing the C&D feed can comprise gasifying the C&D feed, steam, and oxygen in a gasifier at a temperature of no more than 950° C. and/or a pressure of no more than 200 psi to produce syngas.

    Supercritical Water Gasification Process

    公开(公告)号:US20220290064A1

    公开(公告)日:2022-09-15

    申请号:US17636274

    申请日:2020-08-20

    Abstract: The process described herein converts biomass directly into a combination of hydrogen, methane and carbon dioxide. A portion of the gases are collected at pressures above the thermodynamic critical pressure for water, which is 3200 psi (pounds per square inch). Typical operating pressure at the point where the first portion of gas collected can range from 3200 psi to 6000 psi. Upon cooling, most of the CO2 condenses to a liquid. At this density and pressure, the CO2 can be injected into a deep well aquifer to sequester the carbon dioxide. The overall process is superior to carbon neutral processes, can be carbon negative, and possesses the potential to reverse atmospheric CO2 trends if implemented on a global scale.

    Gasification system and process
    9.
    发明授权

    公开(公告)号:US10760017B2

    公开(公告)日:2020-09-01

    申请号:US16062331

    申请日:2016-12-15

    Abstract: A gasification system for the partial oxidation of a carbonaceous feedstock to at least provide a synthesis gas, comprising: a reactor chamber for receiving and partially oxidizing the carbonaceous feedstock; a quench chamber below the floor of the reactor chamber for holding a bath of liquid coolant; an intermediate section at said reactor chamber floor, the intermediate section having a reactor outlet opening through which the reactor chamber communicates with the quench chamber to conduct the synthesis gas from the reactor chamber into the bath of the quench chamber; at least one layer of refractory bricks arranged on and supported by the reactor chamber floor, the lower end section of the refractory bricks enclosing the reactor outlet opening and defining the inner diameter thereof; and a dip tube extending from the reactor outlet opening to the bath of the quench chamber, the dip tube having a widened top section.

    Arrangement and method for preparing a gas

    公开(公告)号:US10752851B2

    公开(公告)日:2020-08-25

    申请号:US16066505

    申请日:2016-12-30

    Applicant: ForestGas Oy

    Inventor: Teuvo Karvonen

    Abstract: The invention relates to an arrangement for preparing a gas in a closable reactor by supplying the reactor with carbon-based biomass or chopped wood material, such as chips, in substantially oxygen-free conditions, by allowing the biomass or wood material to gasify at a high temperature, and by recovering the gas generated in a gasification reaction. In that the arrangement the reactor has its interior defined by a feed pipe whose inlet end is closable with a shut-off valve, especially with a ball valve, and whose outlet end adjoins a heatable gasification dome, biomass or chopped wood material is delivered from the feed pipe's inlet end into the reactor's interior, the reactor's interior is supplied with free water/water vapor in its supercritical state, which is optionally prepared catalytically by splitting water/water vapor, the biomass or wood material is conveyed into a gasification space of the reactor's interior, which is in connection with the heated gasification dome and which is adapted to have existing conditions selected in a manner such that the water present in said gasification space is present in its supercritical state, and the gas generated in the gasification reaction is recovered.

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