US 11,906,505 B2
Method of determining renewable carbon content while producing and blending biogenic-based fuels or blendstocks with fossil fuel in a refining or blending facility
Meir R. Hasbani, El Segundo, CA (US); and Michelle K. Young, Houston, TX (US)
Assigned to CHEVRON U.S.A. INC., San Ramon, CA (US)
Filed by CHEVRON U.S.A. INC., San Ramon, CA (US)
Filed on Feb. 10, 2022, as Appl. No. 17/668,463.
Claims priority of provisional application 63/148,769, filed on Feb. 12, 2021.
Prior Publication US 2022/0276218 A1, Sep. 1, 2022
Int. Cl. C10L 1/04 (2006.01); G01T 1/20 (2006.01); G01N 33/28 (2006.01)
CPC G01N 33/2882 (2013.01) [C10L 1/04 (2013.01); G01T 1/20 (2013.01); C10G 2300/4037 (2013.01); C10L 2200/0407 (2013.01); C10L 2200/0476 (2013.01); C10L 2290/60 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of monitoring renewable carbon in fuel streams in a refinery, while co-processing a bio-feedstock with a fossil feedstock comprising:
a. Blending bio-feedstocks comprising pyrolysis oil from pyrolysis and triglycerides and primary bio-feedstocks;
b. Refining the blended bio-feedstocks using processes comprising (1) thermal cracking such as visbreaking and coking, (2) catalytic cracking, (3) hydrotreating, and (4) hydrocracking;
c. Measuring renewable carbon content in the refinery streams and products selected from the group consisting of the following streams: Fluid Catalytic Cracking to fuel gas and Fluid Catalytic Cracking to gasoline; Fluid Catalytic Cracking to light bottom gasoline; LCO upgrading unit to fuel gas, diesel, Jet and gasoline; jet hydrotreater to fuel gas and jet; alky unit to gasoline; bio feedstock introduction to petroleum feedstock input to diesel hydrotreater; diesel hydrotreater output to off gas, naphtha and diesel blender; diesel blender to finished diesel; cetane improver stream to diesel blender; renewable diesel 99 to diesel blender;
d. Determining the total renewable fuels produced,
e. In situ adjustment of the renewable fuels produced in step d with renewable content to attain a desired percentage of total renewable content.