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AssigneeChevron U.S.A. Inc.
InventorsShabbir Husain, Lin Li, Zhen Zhou, Alexander E. Kuperman, Zunqing He, Huping Luo
Estimating the term…
Disclosed are embodiments relating to a process for reducing the total acid number of a hydrocarbon feed by contacting the feed with a metal titanate catalyst having an MTiO3 structure wherein M is a metal having a valence of 2+, resulting in a hydrocarbon product having a final total acid number lower than the initial total acid number of the feed. The process is useful for pretreating high acid crudes prior to further processing thus avoiding corrosion of equipment used in refining operations. The process can be integrated into conventional refining operations in order to treat various refinery streams. In one embodiment, a process is provided for refining a low acid crude oil and a high acid crude oil by separately introducing a relatively low acid crude oil feed and a relatively high acid crude oil feed to an atmospheric distillation column, wherein the relatively high acid crude oil feed is contacted with a metal titanate catalyst prior to introduction to the atmospheric distillation column.
A process for reducing the total acid number of a liquid hydrocarbon feed, comprising contacting a liquid hydrocarbon feed having an initial total acid number of at least 0.5 with a catalyst comprising a metal titanate having an MTiO3 structure, wherein M is a metal having a valence of 2+ at a temperature of between 200° C. and 400° C., thereby resulting in a treated hydrocarbon product having a final total acid number at least 10% lower than the initial total acid number.
A process for refining a low acid crude oil and a high acid crude oil comprising separately introducing a relatively low acid crude oil feed and a relatively high acid crude oil feed to an atmospheric distillation column, wherein the relatively high acid crude oil feed is contacted with a catalyst comprising a metal titanate having an MTiO3 structure, wherein M is a metal having a valence of 2+ prior to introduction to the atmospheric distillation column.
Dependencies are inferred from the claim text.