METHOD FOR REMOVAL OF DISSOLVED OXYGEN IN PETROLEUM PRODUCT Russian patent published in 2023 - IPC C10G45/04 B01J23/44 B01J21/04 B01J21/06 B01J35/10 

FIELD: method for removing dissolved oxygen in petroleum products.

SUBSTANCE: invented method includes the following stages: (1) mixing the petroleum product with hydrogen, preferably at a volume ratio of hydrogen to petroleum product of 1.0 to 4.0; and (2) contacting the mixture obtained in step (1) with a deoxygenation catalyst to carry out a hydrodeoxygenation reaction, the catalyst comprising a support comprising a first support and a second support supported on an outer surface of the first support, and a catalytic active component supported on a second support, wherein the first support has a porosity that is less than or equal to 35%, preferably the catalytic active component contains at least one IUPAC group 8-14 metal. The ratio of the thickness of the second support to the effective diameter of the first support of the deoxygenation catalyst is from 0.01 to 0.2.

EFFECT: good deoxygenation stability and long service life, and the degree of removal of traces of dissolved oxygen in the petroleum product can be 95% or more.

7 cl, 13 ex, 2 tbl, 1 dwg