Method and system for treating municipal solid waste

    公开(公告)号:US11931781B2

    公开(公告)日:2024-03-19

    申请号:US18159802

    申请日:2023-01-26

    发明人: Joseph Anderson

    摘要: A method for treating process material using a plurality of autoclaves. The method includes: introducing steam into a hollow interior of a first autoclave; increasing the temperature within the hollow interior of the first autoclave by adding heat to the hollow interior of the first autoclave using an indirect heat source; reducing the temperature and pressure within the hollow interior of the first autoclave by flashing a portion of the steam within the hollow interior of the first autoclave to a second autoclave; increasing the temperature within the hollow interior of the first autoclave by continuing to add heat to the hollow interior of first autoclave using the indirect heat source; and reducing a moisture content of a process material in the hollow interior of the first autoclave to a predetermined value by venting a remaining portion of the steam from the first autoclave into a third autoclave.

    Medical Waste Treatment System and Method
    6.
    发明公开

    公开(公告)号:US20230311176A1

    公开(公告)日:2023-10-05

    申请号:US17710908

    申请日:2022-03-31

    申请人: Radom Corporation

    IPC分类号: B09B3/00 C10J3/20 C10J3/18

    摘要: A medical zero emission waste system comprising a medical waste treatment unit that couples to a medical facility. The medical waste treatment unit is onsite to the medical facility for processing medical waste generated by the medical facility. The medical waste treatment unit comprises a gasification reactor, a syngas treatment unit, and a synthetic fuel generator for treating and converting medical waste. The synthetic fuel generator comprises an electrolysis unit and a liquid fuel synthesis unit. The medical waste treatment unit converts the medical waste to synthetic fuel, gaseous fuel, oxygen, heat, slag, and other components that are useful to the medical facility or other entities. The medical waste treatment system uses carbon dioxide generated during a medical waste conversion process thereby producing substantially zero emissions and eliminating medical waste that could be harmful to the environment.

    Method for producing recycled pulp fibers by decomposing super absorbant polymers with ozone

    公开(公告)号:US11771604B2

    公开(公告)日:2023-10-03

    申请号:US16625927

    申请日:2018-05-10

    摘要: The purpose of the present invention is to provide a method for producing recycled pulp fibers such that articles using the recycled pulp fibers can easily achieve a uniform whiteness and users are not prone to feel psychological resistance to articles using the recycled pulp fibers. This method is described below. The method is characterized by involving: a step for supplying, from a mixed solution supply port (32) to a treatment tank (31), a mixed solution (51) which contains superabsorbent polymers and pulp fibers derived from multiple types of used sanitary products; a step for supplying an ozone-containing gas (53) from an ozone-containing gas supply port (43) to a treatment solution (52) inside of the treatment tank (31); a step in which, by raising the ozone-containing gas (53) while lowering the superabsorbent polymers and pulp fibers in the treatment tank (31), the ozone-containing gas (53) is brought into contact with the superabsorbent polymers and the pulp fibers, and the pulp fibers are bleached to form recycled pulp fibers; and a step for discharging the treatment solution (52) from a treatment solution discharge port (33), wherein the recycled pulp fibers have a 0-10 ΔYI with respect to a standard white plate.