US 12,459,018 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)
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Nov. 1, 2023, as Appl. No. 18/499,516.
Application 18/499,516 is a continuation of application No. 17/045,346, granted, now 11,839,909, previously published as PCT/JP2019/015792, filed on Apr. 11, 2019.
Claims priority of application No. 2018-077942 (JP), filed on Apr. 13, 2018.
Prior Publication US 2024/0058850 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B09B 3/45 (2022.01); C02F 11/04 (2006.01); C02F 11/12 (2019.01); C02F 11/18 (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)
CPC B09B 3/45 (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)] 17 Claims
OG exemplary drawing
 
1. A waste treatment system for performing a hydrothermal treatment of waste, comprising:
at least one hydrothermal treatment device for performing the hydrothermal treatment by bringing steam into contact with the waste;
a fuel production device for producing a solid fuel from solids of a reactants of the hydrothermal treatment;
a first storage facility for storing the solid fuel;
at least two steam generators for generating the steam to be supplied to the at least one hydrothermal treatment device;
a gasifier for gasifying the solid fuel to produce fuel gas; and
a second storage facility for storing the fuel gas produced in the gasifier,
wherein the at least one hydrothermal treatment device is a batch-type hydrothermal treatment system which includes
an enclosure into which the steam is injected,
an inlet for feeding the waste into the enclosure, and
an outlet for discharging the reactants from the enclosure,
wherein the at least two steam generators include a first steam generator that uses combustion energy generated by combustion of the solid fuel to generate the steam, and a second steam generator that generates the steam using combustion energy generated by combustion of the fuel gas,
wherein the waste treatment system further comprises a first steam output line for supplying the steam from the first steam generator to the at least one hydrothermal treatment device, and a second steam output line for supplying the steam from the second steam generator to the at least one hydrothermal treatment device, and wherein the first steam output line supplies the steam from the first steam generator to the at least one hydrothermal treatment device while bypassing the second steam generator.