公开(公告)号：US20170191749A1

公开(公告)日：2017-07-06

申请号：US15465634

申请日：2017-03-22

Applicant: DRESSER-RAND COMPANY

Inventor： Daniel L. Ohart ,  Gregory W. Yonker

IPC: F25J1/00 ,  H02K7/18 ,  F25J1/02

CPC classification number: F25J1/0022 ,  F25J1/0037 ,  F25J1/0045 ,  F25J1/0052 ,  F25J1/0208 ,  F25J1/0227 ,  F25J1/0242 ,  F25J1/0284 ,  F25J1/0288 ,  F25J1/0292 ,  F25J2205/60 ,  F25J2220/66 ,  F25J2270/906 ,  H02K7/1815

Abstract: A system and method for producing liquefied natural gas are provided. The method may include compressing a process stream containing natural gas in a compression assembly to produce a compressed process stream. The method may also include removing non-hydrocarbons from the compressed process stream in a separator, and cooling the compressed process stream with a cooling assembly to thereby produce a cooled, compressed process stream containing natural gas in a supercritical state. The method may further include expanding a first portion and a second portion of the natural gas from the cooled, compressed process stream in a first expansion element and a second expansion element to generate a first refrigeration stream and a second refrigeration stream, respectively. The method may further include cooling the natural gas in the cooled, compressed process stream to a supercritical state with the first and second refrigeration streams to thereby produce the liquefied natural gas.

公开(公告)号：US20170268818A1

公开(公告)日：2017-09-21

申请号：US15614764

申请日：2017-06-06

Applicant: Dresser-Rand Company

Inventor： Daniel L. Ohart ,  Gregory W. Yonker

IPC: F25J1/00 ,  F25J1/02

CPC classification number: F25J1/0022 ,  F25J1/0037 ,  F25J1/0045 ,  F25J1/0052 ,  F25J1/0208 ,  F25J1/0227 ,  F25J1/0242 ,  F25J1/0284 ,  F25J1/0288 ,  F25J1/0292 ,  F25J2205/60 ,  F25J2220/66 ,  F25J2270/906 ,  H02K7/1815

Abstract: A system and method for producing liquefied natural gas are provided. The method may include compressing a process stream containing natural gas in a compression assembly to produce a compressed process stream. The method may also include removing non-hydrocarbons from the compressed process stream in a separator, and cooling the compressed process stream with a cooling assembly to thereby produce a cooled, compressed process stream containing natural gas in a supercritical state. The method may further include expanding a first portion and a second portion of the natural gas from the cooled, compressed process stream in a first expansion element and a second expansion element to generate a first refrigeration stream and a second refrigeration stream, respectively. The method may further include cooling the natural gas in the cooled, compressed process stream to a supercritical state with the first and second refrigeration streams to thereby produce the liquefied natural gas.