The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2023
Filed:
Jul. 30, 2019
Yijun Liu, Spring, TX (US);
Fritz Pierre, Jr., Humble, TX (US);
Ananda K. Nagavarapu, Houston, TX (US);
Xiaoli Y. Wright, Sugar Land, TX (US);
Yijun Liu, Spring, TX (US);
Fritz Pierre, Jr., Humble, TX (US);
Ananda K. Nagavarapu, Houston, TX (US);
Xiaoli Y. Wright, Sugar Land, TX (US);
ExxonMobil Technology and Engineering Company, Spring, TX (US);
Abstract
A method is disclosed for start-up of a system for liquefying a feed gas stream comprising natural gas. The system has a feed gas compression and expansion loop, and a refrigerant system comprising a primary cooling loop and a sub-cooling loop. The feed gas compression and expansion loop is started up. The refrigerant system is pressurized. Circulation in the primary cooling loop is started and established. Circulation in the sub-cooling loop is started and established. A flow rate of the feed gas stream and circulation rates of the primary cooling loop and the sub-cooling loop are ramped up.