Production of fuels form hydroprocessed esters and fatty acids, low carbon hydrogen, and carbon dioxide in an integrated hefa and efuels plant

A process for the production of renewable fuels comprising:

• a. using low carbon electricity in an electrolyzer to convert an electrolyzer feedstock into a first electrolyzer product stream comprising low carbon hydrogen and a second electrolyzer product stream comprising oxygen, wherein the electrolyzer feedstock comprises water;
• b. pretreating biomass to provide hydroprocessed esters and fatty acids, wherein the biomass comprises at least one of the following materials, seed oils, palm oils, corn oils, soybean oils, distillers corn oil, other virgin oils, waste oils, used cooking oils, tallow and methyl esters;
• c. feeding the hydroprocessed esters and fatty acids into a hydrotreatment reactor that produces liquid fuel, wherein a first hydrocarbon stream and a second hydrocarbon stream are produced, wherein the first hydrocarbon stream comprises C9-C15 n-alkanes, and wherein the second hydrocarbon stream comprises alkenes, and wherein the C9-C15 n-alkanes and the alkenes comprise between 40volume percent and 99 volume percent of the liquid fuel;
• d. feeding at least a portion of the first hydrocarbon stream and at least a portion of the first electrolyzer product stream to at least one catalytic hydroisomerization unit to produce one or more hydroisomerization product streams that are fed to a hydroisomerization separation unit, wherein the hydroisomerization separation unit produces two or more hydroisomerization products.