US 11,834,968 B2
Steam generation apparatus and exhaust gas heat recovery plant
Hideyuki Uechi, Tokyo (JP); Yuichi Otani, Tokyo (JP); Fumito Kajitani, Tokyo (JP); Taichi Yoshii, Tokyo (JP); Norito Katsuki, Tokyo (JP); Kanako Nagayama, Tokyo (JP); and Takahiro Hidaka, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Appl. No. 17/778,982
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
PCT Filed Nov. 26, 2020, PCT No. PCT/JP2020/043958
§ 371(c)(1), (2) Date May 23, 2022,
PCT Pub. No. WO2021/106986, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 2019-214824 (JP), filed on Nov. 28, 2019.
Prior Publication US 2023/0022466 A1, Jan. 26, 2023
Int. Cl. F01K 7/16 (2006.01); F22B 1/18 (2006.01); F22B 3/04 (2006.01); F22D 1/02 (2006.01); F22D 5/36 (2006.01); F22G 1/00 (2006.01)
CPC F01K 7/16 (2013.01) [F22B 1/18 (2013.01); F22B 3/04 (2013.01); F22D 1/02 (2013.01); F22D 5/36 (2013.01); F22G 1/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A steam generation apparatus comprising:
a heat medium flow passage through which a heat medium flows;
a primary economizer disposed in the heat medium flow passage;
a secondary economizer disposed in the heat medium flow passage at an upstream side of the primary economizer with respect to a flow direction of the heat medium;
a primary evaporator disposed in the heat medium flow passage at an upstream side of the secondary economizer with respect to the flow direction of the heat medium;
a first feed water line configured to supply water heated by the primary economizer to the secondary economizer; and
a second feed water line disposed so as to branch from the first feed water line and configured to supply the water heated by the primary economizer to a heat utilization facility,
wherein a plurality of evaporators including the primary evaporator are disposed in the heat medium flow passage, and
wherein the primary evaporator is positioned most downstream among the plurality of evaporators with respect to the flow direction of the heat medium flow passage.