ConocoPhillips has patented a method for liquefying natural gas offshore using low combustibility refrigerants, reducing the risk of vapor cloud explosions. The process involves multiple refrigeration cycles with environmentally-friendly mixtures, including fluorinated olefin and ethylene, to produce liquefied natural gas (LNG) in a more sustainable manner. GlobalData’s report on ConocoPhillips gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on ConocoPhillips, HBV (Hepatitis B Virus) peptides was a key innovation area identified from patents. ConocoPhillips's grant share as of January 2024 was 80%. Grant share is based on the ratio of number of grants to total number of patents.
Eco-friendly natural gas liquefaction method using low combustibility refrigerants
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A recently granted patent (Publication Number: US11885561B2) discloses a method for liquefying natural gas offshore to produce liquefied natural gas (LNG). The method involves a series of steps including cooling the natural gas stream in an offshore LNG facility using a first refrigeration cycle with a specific azeotropic mixture of propane and a fluorinated olefin to reduce the risk of vapor cloud explosion. Subsequent cooling is achieved through additional refrigeration cycles with different mixtures, ultimately resulting in the production of LNG. The use of environmentally-friendly low combustibility refrigerants and optimized cascade processes are highlighted in the claims, emphasizing safety and efficiency in the liquefaction process.
Furthermore, the patent details variations of the method, such as the inclusion of specific fluorinated olefins like 1234yf and 2,3,3,3-tetrafluoropropene in the refrigeration cycles. The method also involves vaporizing the liquefied natural gas as an additional step. Notably, the inclusion of processed natural gas in the refrigeration cycle, originating from the LNG production itself, is mentioned in one of the claims. Overall, the patent outlines a comprehensive approach to liquefying natural gas offshore, ensuring the production of LNG through a series of carefully designed refrigeration cycles with specific azeotropic mixtures and environmentally-friendly refrigerants to enhance safety and efficiency in the process.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
