公开(公告)号：US20200338614A1

公开(公告)日：2020-10-29

申请号：US16772745

申请日：2019-03-20

Applicant: KOREA ELECTRIC POWER CORPORATION ,  KOREA MIDLAND POWER CO., LTD. ,  KOREA WESTERN POWOR CO., LTD. ,  KOREA SOUTH POWER CO., LTD. ,  KOREA EAST-WEST POWER CO., LTD.

Inventor： Kwang-Ha PARK ,  Doo-Young KIM ,  Hyun-Ku PARK ,  Jung-Hwan KIM ,  Yong-Hee JANG ,  Jun-Su PARK

IPC: B21D3/16 ,  B21D37/16

Abstract: A bent rotor straightening method using low-frequency induction heating and a bent rotor straightening apparatus using the method are proposed. The bent rotor straightening method using low-frequency induction heating according to an embodiment of the present invention includes: calculating a heating speed when a first target temperature for correcting bending of a rotor using low-frequency induction heating is set; maintaining the first target temperature for a heating time determined on the basis of a diameter of the rotor when the first target temperature is reached, when performing primary thermal correction at the heating speed; checking whether a bending amount of the rotor reaches a predetermined critical value in accordance the result of performing the primary thermal correction; and finishing correction of bending of the rotor in accordance with the result of checking the bending amount of the rotor.

公开(公告)号：US11167261B2

公开(公告)日：2021-11-09

申请号：US16340065

申请日：2016-11-18

Applicant: KOREA ELECTRIC POWER CORPORATION ,  KOREA SOUTH-EAST POWER CO., LTD. ,  KOREA MIDLAND POWER CO., LTD. ,  KOREA SOUTH POWER CO., LTD. ,  KOREA WESTERN POWER CO., LTD.

Inventor： Joong Beom Lee ,  Tae Hyoung Eom ,  Hyun Geun Jo ,  Jeom In Baek ,  Ui Sik Kim

IPC: B01J20/04 ,  B01D53/02 ,  B01J20/28 ,  B01J20/30 ,  B01J20/02

Abstract: The present invention relates to a carbon dioxide absorbent used for absorbing carbon dioxide, a carbon dioxide absorbent composition used for producing the carbon dioxide absorbent, and a solid raw material for a carbon dioxide absorbent included in the carbon dioxide absorbent.

公开(公告)号：US11484830B2

公开(公告)日：2022-11-01

申请号：US16339998

申请日：2016-11-30

Applicant: KOREA ELECTRIC POWER CORPORATION ,  KOREA SOUTH POWER CO., LTD. ,  KOREA SOUTH-EAST POWER CO., LTD. ,  KOREA MIDLAND POWER CO., LTD. ,  KOREA WESTERN POWER CO., LTD.

Inventor： Tae Hyoung Eom ,  Joong Beom Lee ,  Ui Sik Kim ,  Hyun Geun Jo ,  Joong Won Lee

IPC: B01D53/62 ,  B01D53/83 ,  B01D53/96 ,  B01D53/22 ,  B01D71/02 ,  B01D45/16 ,  B04C5/24 ,  B04C9/00

Abstract: A carbon dioxide separator includes an absorption tower for producing a carbon dioxide-rich absorbent and a carbon dioxide-depleted flue gas by reaction of a carbon dioxide-containing flue gas and an absorbent contained therein; a regeneration tower for removing the carbon dioxide-rich absorbent transferred from the absorption tower in the presence of the flowing gas to separate the same into a carbon dioxide-rich treatment gas and a carbon dioxide-lean absorbent; and a separation membrane module for selectively membrane-separating and concentrating the carbon dioxide, wherein the carbon dioxide-containing flue gas is transferred to the absorption tower as a carbon dioxide-lean flue gas obtained via the separation membrane module, and the flowing gas is transferred to the regeneration tower as the carbon dioxide-rich flue gas obtained via the separation membrane module from the carbon dioxide-containing flue gas.

公开(公告)号：US11465187B2

公开(公告)日：2022-10-11

申请号：US16772745

申请日：2019-03-20

Applicant: KOREA ELECTRIC POWER CORPORATION ,  KOREA MIDLAND POWER CO., LTD. ,  KOREA WESTERN POWOR CO., LTD. ,  KOREA SOUTH POWER CO., LTD. ,  KOREA EAST-WEST POWER CO., LTD.

Inventor： Kwang-Ha Park ,  Doo-Young Kim ,  Hyun-Ku Park ,  Jung-Hwan Kim ,  Yong-Hee Jang ,  Jun-Su Park

IPC: B21D3/16 ,  B21D37/16

Abstract: A bent rotor straightening method using low-frequency induction heating and a bent rotor straightening apparatus using the method are proposed. The bent rotor straightening method using low-frequency induction heating according to an embodiment of the present invention includes: calculating a heating speed when a first target temperature for correcting bending of a rotor using low-frequency induction heating is set; maintaining the first target temperature for a heating time determined on the basis of a diameter of the rotor when the first target temperature is reached, when performing primary thermal correction at the heating speed; checking whether a bending amount of the rotor reaches a predetermined critical value in accordance the result of performing the primary thermal correction; and finishing correction of bending of the rotor in accordance with the result of checking the bending amount of the rotor.

公开(公告)号：US20200038806A1

公开(公告)日：2020-02-06

申请号：US16339998

申请日：2016-11-30

Applicant: KOREA ELECTRIC POWER CORPORATION ,  KOREA SOUTH POWER CO., LTD. ,  KOREA SOUTH-EAST POWER CO., LTD. ,  KOREA MIDLAND POWER CO., LTD. ,  KOREA WESTERN POWER CO., LTD.

Inventor： Tae Hyoung EOM ,  Joong Beom LEE ,  Ui Sik KIM ,  Hyun Geun JO ,  Joong Won LEE

IPC: B01D53/62 ,  B01D53/83 ,  B01D53/96 ,  B01D53/22 ,  B01D71/02 ,  B01D45/16 ,  B04C5/24 ,  B04C9/00

Abstract: A carbon dioxide separator includes an absorption tower for producing a carbon dioxide-rich absorbent and a carbon dioxide-depleted flue gas by reaction of a carbon dioxide-containing flue gas and an absorbent contained therein; a regeneration tower for removing the carbon dioxide-rich absorbent transferred from the absorption tower in the presence of the flowing gas to separate the same into a carbon dioxide-rich treatment gas and a carbon dioxide-lean absorbent; and a separation membrane module for selectively membrane-separating and concentrating the carbon dioxide, wherein the carbon dioxide-containing flue gas is transferred to the absorption tower as a carbon dioxide-lean flue gas obtained via the separation membrane module, and the flowing gas is transferred to the regeneration tower as the carbon dioxide-rich flue gas obtained via the separation membrane module from the carbon dioxide-containing flue gas.

公开(公告)号：US20190308163A1

公开(公告)日：2019-10-10

申请号：US16340065

申请日：2016-11-18

Applicant: KOREA ELECTRIC POWER CORPORATION ,  KOREA SOUTH-EAST POWER CO., LTD. ,  KOREA MIDLAND POWER CO., LTD. ,  KOREA SOUTH POWER CO., LTD. ,  KOREA WESTERN POWER CO., LTD.

Inventor： Joong Beom LEE ,  Tae Hyoung EOM ,  Hyun Geun JO ,  Jeom In BAEK ,  Ui Sik KIM

IPC: B01J20/04 ,  B01J20/28 ,  B01J20/30 ,  B01D53/02

Abstract: The present invention relates to a carbon dioxide absorbent used for absorbing carbon dioxide, a carbon dioxide absorbent composition used for producing the carbon dioxide absorbent, and a solid raw material for a carbon dioxide absorbent included in the carbon dioxide absorbent.