US 11,839,909 B2
Waste treatment system and waste treatment method
Atsuhiro Yukumoto, Tokyo (JP); Akira Noma, Tokyo (JP); Yoshio Seiki, Tokyo (JP); Yasumichi Aoki, Tokyo (JP); Nobuyuki Ukai, Tokyo (JP); Kazuhiro Kawai, Tokyo (JP); Jun Satou, Tokyo (JP); and Susumu Okino, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/045,346
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Apr. 11, 2019, PCT No. PCT/JP2019/015792
§ 371(c)(1), (2) Date Oct. 5, 2020,
PCT Pub. No. WO2019/198794, PCT Pub. Date Oct. 17, 2019.
Claims priority of application No. 2018-077942 (JP), filed on Apr. 13, 2018.
Prior Publication US 2021/0146410 A1, May 20, 2021
Int. Cl. B09B 3/45 (2022.01); C02F 11/04 (2006.01); C10L 5/42 (2006.01); C10L 5/44 (2006.01); C10L 5/46 (2006.01); C12P 5/02 (2006.01); F01K 21/00 (2006.01); F22B 1/02 (2006.01); F22G 3/00 (2006.01); B09B 3/40 (2022.01); C02F 11/18 (2006.01); C02F 11/12 (2019.01)
CPC B09B 3/45 (2022.01) [B09B 3/40 (2022.01); C02F 11/04 (2013.01); C10L 5/42 (2013.01); C10L 5/445 (2013.01); C10L 5/46 (2013.01); C12P 5/023 (2013.01); F01K 21/00 (2013.01); F22B 1/02 (2013.01); F22G 3/00 (2013.01); C02F 11/12 (2013.01); C02F 11/18 (2013.01); C10L 2200/0469 (2013.01); C10L 2290/02 (2013.01); C10L 2290/06 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A waste treatment system for performing a hydrothermal treatment of wastes, the system comprising:
a hydrothermal treatment device for performing the hydrothermal treatment by bringing steam into contact with the wastes, the hydrothermal treatment device including a housing in which the hydrothermal treatment is performed, a slot through which the wastes are loaded into the housing, a steam supply port through which the steam is injected into the housing, and a reactant discharge port through which a reactant of the hydrothermal treatment is discharged from the housing;
a fuel production device for producing a solid fuel from solids of the reactant of the hydrothermal treatment;
a methane fermentation device for performing methane fermentation of a liquid of the reactant to generate a biogas;
a first storage facility for storing the solid fuel;
a second storage facility for storing the biogas; and
at least one steam generation device for generating the steam to be supplied to the hydrothermal treatment device,
wherein the steam generation device is configured to generate the steam by using the solid fuel stored in the first storage facility or a combustion energy generated by combustion of the biogas stored in the second storage facility, and the fuel production device includes a drying device for drying the solids of the reactant.