Chevron has patented a process using zeolite SSZ-91 to hydroisomerize unconventional feedstocks like vegetable oils or Fischer-Tropsch products into diesel fuel. The catalyst enables the conversion of triglycerides and free fatty acids into a high-quality diesel product. GlobalData’s report on Chevron 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 Chevron, Anti-wear lubricants was a key innovation area identified from patents. Chevron's grant share as of May 2024 was 69%. Grant share is based on the ratio of number of grants to total number of patents.
Hydroisomerisation process for unconventional feedstock to diesel fuel
A recently granted patent (Publication Number: US11987757B2) discloses a process for hydroisomerising a diesel feedstock using a specific catalyst, zeolite SSZ-91. The process involves contacting the diesel feedstock, which can include biocomponent feeds like vegetable oils or animal fats, or Fischer-Tropsch feeds with the catalyst to upgrade the diesel fuel. The catalyst composition includes zeolite SSZ-91 and a Group 8-10 metal, with specific characteristics such as polytype 6 content, EUO-type molecular sieve phase, and morphology of polycrystalline aggregates. The process aims to produce a diesel fuel with improved properties, such as lower cloud point and pour point, compared to the original feedstock.
Furthermore, the patent details variations in the catalyst composition, including the addition of zeolite SSZ-32 or SSZ-32x in a layered catalyst configuration. The process involves specific hydroisomerisation conditions, such as temperature, pressure, feed rate, and hydrogen-to-feed ratio, to achieve the desired fuel properties. Additionally, a hydrotreating step prior to hydroisomerisation is outlined to further enhance the fuel quality. The patent emphasizes the use of zeolite SSZ-91 in combination with other catalyst components to optimize the hydroisomerisation process for producing diesel fuels with superior performance characteristics, offering potential advancements in the fuel refining industry.
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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.
