公开(公告)号：US11650008B2

公开(公告)日：2023-05-16

申请号：US16635102

申请日：2018-09-05

Applicant: LG CHEM, LTD.

Inventor： Tae Woo Kim ,  Sung Kyu Lee ,  Inseop Kim ,  Joon Ho Shin

IPC: C10G9/00 ,  F17C7/04 ,  C07C4/04 ,  F25J3/02

CPC classification number: F25J3/0219 ,  C07C4/04 ,  C10G9/00 ,  F17C7/04 ,  F25J3/0238 ,  C10G2300/1044 ,  F17C2221/035 ,  F25J2210/12 ,  F25J2210/62 ,  F25J2215/64

Abstract: A method for vaporizing liquid propane to be supplied as a raw material to a naphtha cracking ractor. The method comprises: decompressing liquid propane to lower a vaporization point and vaporize at least a portion of the liquid propane; utilizing vaporization heat, generated during vaporization of the portion of liquid propane, as a refrigerant; compressing the vaporized propane gas to increase pressure of the propane gas and produce compressed propane gas; and preheating the compressed propane gas. By using this method, it is possible to reduce pressure of liquid propane to a significantly lower pressure than the related art method so that all the vaporization latent heat or vaporization heat included in liquid propane may be utilized as a refrigerant, while also reducing heat energy consumed in a preheat process before it is supplied to the naphtha cracking reactor.

公开(公告)号：US20210095920A1

公开(公告)日：2021-04-01

申请号：US16635102

申请日：2018-09-05

Applicant: LG CHEM, LTD.

Inventor： Tae Woo Kim ,  Sung Kyu Lee ,  Inseop Kim ,  Joon Ho Shin

IPC: F25J3/02 ,  C10G9/00

Abstract: A method for vaporizing liquid propane to be supplied as a raw material to a naphtha cracking ractor. The method comprises: decompressing liquid propane to lower a vaporization point and vaporize at least a portion of the liquid propane; utilizing vaporization heat, generated during vaporization of the portion of liquid propane, as a refrigerant; compressing the vaporized propane gas to increase pressure of the propane gas and produce compressed propane gas; and preheating the compressed propane gas. By using this method, it is possible to reduce pressure of liquid propane to a significantly lower pressure than the related art method so that all the vaporization latent heat or vaporization heat included in liquid propane may be utilized as a refrigerant, while also reducing heat energy consumed in a preheat process before it is supplied to the naphtha cracking reactor.