公开(公告)号：WO2022093762A1

公开(公告)日：2022-05-05

申请号：PCT/US2021/056573

申请日：2021-10-26

Applicant: JTURBO ENGINEERING & TECHNOLOGY, LLC

Inventor： THOMAS, Jacob ,  THOMAS, Nickey Jacob

IPC: F25J1/00 ,  F25J1/02

Abstract: Embodiments relate generally to systems and methods for pre-cooling a natural gas stream to a liquefaction plant. A system may include a compressor configured to receive a first natural gas stream at a first pressure and produce a second natural gas stream at a second pressure; an exchanger, wherein the exchanger is configured to receive the second natural gas stream as the second pressure and cool the second natural gas stream to produce a cooled natural gas stream; and an expander, wherein the expander is configured to receive the cooled natural gas stream and expand the cooled natural gas stream to produce a chilled natural gas stream from the second pressure to a third pressure. An LNG liquefaction plant system, wherein the refrigeration content of the external or internal refrigerant is used to liquefy and sub-cool a natural gas stream to produce liquefied natural gas (LNG) in a cold box or cryogenic exchanger. The refrigerant may be an external gas (N2) or an internal (CH4 - BOG) refrigerant working fluid expanded and compressed in a twin compander arrangement and compressed by a refrigerant compressor, or an external single mixed refrigerant (SMR) working fluid compressed by a refrigerant compressor and expanded thru a JT valve.

公开(公告)号：WO2022150068A1

公开(公告)日：2022-07-14

申请号：PCT/US2021/049426

申请日：2021-09-08

Applicant: JTURBO ENGINEERING & TECHNOLOGY, LLC

Inventor： THOMAS, Jacob ,  THOMAS, Nickey Jacob

IPC: F25J1/00 ,  F25J1/02

Abstract: Systems and methods for liquefying a gaseous hydrogen that include a first refrigeration stage and a second refrigeration stage. The first refrigeration stage includes a first heat exchanger configured to flow a first refrigerant to pre-cool the gaseous hydrogen. The second refrigeration stage includes a second heat exchanger configured to flow a second refrigerant to liquefy and sub-cool the hydrogen. The second refrigerant is split into two streams that flow through two compressor-expanders and multiple passes through the second heat exchanger before being recombined to repeat the second refrigeration stage circuit.