Patent · US Expired

Method and device for small scale liquefaction of a product gas

US6751984B2 · kind B2 · utility

11Cited by

5References

9Claims

0Family size

Assignee

Sinvent AS · NO

Inventors

Bengt Olav Neeraas · Trondheim, NO
Einar Brendeng · Trondheim, NO

Key dates

Filing date	Jul 25, 2002
Grant date	Jun 22, 2004
Priority date	—
Expiry date	Jul 25, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF25J2290/44
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Method and process plant for liquefaction of gas, particularly natural gas with multicomponent refrigerant, suited for small and medium sized scale, where the plant solely is based on conventional two-flow plate heat exchangers and conventional oil lubricated compressors. By the arrangement of the heat exchangers and the compressors according to the invention it is avoided that oil from the compressors, that to some extend will follow the flow of refrigerant, may reach the coldest parts of the plant. Any freezing of oil and plugging of conduit etc. is thus avoided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.