The present invention relates to a process for producing olefins from a hydrocarbon feedstock 11 with a sulfur content of at least 0.1 weight %, an initial boiling point of at least 180° C. and a final boiling point of at least 600° C.

Systems and methods for crude oil separations including degassing, dewatering, desalting, and stabilization, one method including separating crude oil into a crude oil off-gas and a partially degassed crude oil output; compressing the crude oil off-gas; applying the compressed crude oil off-gas for indirect heating of the partially degassed crude oil output; further heating the partially degassed crude oil output indirectly with compressed low pressure gas; directly mixing with the partially degassed crude oil output a compressed atmospheric pressure gas; separating from the partially degassed crude oil output a low pressure gas for use in the step of further heating; and separating from the partially degassed crude oil output an atmospheric pressure gas for use in the step of directly mixing.

Systems and methods for crude oil separations including degassing, dewatering, desalting, and stabilization. One method includes separating crude oil into a crude oil off-gas and a partially degassed crude oil output; compressing the crude oil off-gas; applying the compressed crude oil off-gas for indirect heating through reboilers of the partially degassed crude oil output; and directly mixing with the crude oil a compressed atmospheric pressure gas. In some embodiments, multiple reboilers are used. In some embodiments, heat exchangers are used. Aftercoolers are used after the compressor to cool the gas; knockout drums are used after the coolers to separate liquids.

A process for producing propylene and a low-sulfur fuel oil component, comprising the steps of: i) contacting a hydrocarbon-containing feedstock oil with a catalytic conversion catalyst for reaction under effective conditions in a catalytic conversion reactor in the absence of hydrogen to obtain a reaction product comprising propylene; ii) separating the reaction product from step i) to obtain a catalytic cracking distillate oil, and iii) subjecting the catalytic cracking distillate oil to hydrodesulfurization to obtain a low-sulfur hydrogenated distillate oil suitable for use as a fuel oil component. The process can greatly improve the propylene selectivity and propylene yield while producing more fuel oil components, significantly reduce the yield of dry gas and coke, and thus has better economic and social benefits.

The present invention relates to a process for producing olefins from a hydrocarbon feedstock 11 having a sulfur content of at least 0.1 weight %, an initial boiling point of at least 180° C. and a final boiling point of at least 600° C.

Described are a process and a system for hydrotreating a deoiled asphalt. The process includes: (2) introducing a deoiled asphalt and an aromatics-containing stream into a first reaction unit for hydrogenation reaction, wherein the first reaction unit comprises a mineral-rich precursor material and/or a hydrogenation catalyst, and the first reaction unit is a fixed bed hydrogenation unit; (21) fractionating the liquid-phase product from the first reaction unit to provide a first light component and a first heavy component; (31) introducing the first light component into a second reaction unit for reaction, to provide a gasoline component, a diesel component and/or a BTX feedstock component; and (32) introducing the first heavy component to a delayed coking unit for reaction; or using the first heavy component as a low sulfur ship fuel oil component.

An integrated catalytic process for upgrading a feed oil comprises the steps of introducing a catalyst precursor solution to a supercritical water (SCW) process unit, where the catalyst precursor solution comprises a catalyst precursor dissolved in liquid water; introducing a feed water to the SCW process unit; introducing the feed oil to the SCW process unit; treating the catalyst precursor solution, the feed water, and the feed oil in the SCW process unit to produce a SCW effluent, where the catalyst precursor is converted to catalyst particles; separating the SCW effluent in a separator unit to produce a SCW distillate product, a SCW residue product; introducing the SCW residue product to a slurry hydroprocessing unit, where the SCW residue product comprises the catalyst particles; treating the SCW residue product and the hydrogen gas in the slurry hydroprocessing unit to produce a product gas stream and an upgraded oil product.

A process for treating a feed oil in the presence of in situ produced catalyst particles comprising the steps of mixing the supercritical water feed with the pressurized precursor solution in a catalyst mixer to produce a supercritical water stream; withdrawing the supercritical water stream to a process line, where the catalyst precursor is converted to catalyst particles in the process line; mixing the supercritical water stream and the hot oil stream in the mixer to produce a mixed stream; introducing the mixed stream to a reactor; processing the heavy oil in the reactor in the presence of the catalyst particles to produce a reactor effluent; reducing a temperature of the reactor effluent to produce a cooled effluent; reducing a pressure of the cooled effluent to produce a depressurized effluent; and separating the depressurized effluent to produce a product gas, a product oil, and a product water.

A method of recovering gaseous hydrocarbons from tank headspace includes flowing a hydrocarbon gas composition from headspace of a tank fed by a secondary separator into a compressor to form a compressed mixture. The method includes flowing the compressed mixture into a cooling unit to cool the compressed mixture, to form a cooled composition including liquid hydrocarbons. The method includes recovering the liquid hydrocarbons as a recovered liquid hydrocarbon stream.

The present disclosure provides processes for refining hydrocarbon feedstocks and apparatus thereof. In at least one embodiment, a process includes hydroprocessing a mineral hydrocarbon feedstock in the presence of a first catalyst in a first reactor, and removing a first reactor effluent from the first reactor. The process includes hydroprocessing a biocomponent feedstock in the presence of a second catalyst in a second reactor, and removing a second reactor effluent from the second reactor. The process includes mixing the first reactor effluent and the second reactor effluent to form a mixture. The process includes introducing the mixture to a separation unit to form a fuel product. In at least one embodiment, an apparatus includes a first hydroprocess reactor. The apparatus includes a second hydroprocess reactor coupled with the first hydroprocess reactor. The apparatus includes a separation unit coupled with the second hydroprocess reactor.