Abstract: Systems and processes herein integrate a crude separation unit, a steam cracker unit, a hydrocracker unit, an aromatics processing unit, and a pyrolysis gasoline hydrogenation unit for separating a whole crude oil or other wide boiling hydrocarbon mixtures for producing olefins and aromatics.

Abstract: Processes and systems for converting a wide boiling hydrocarbon mixture to chemicals herein heating a hydrocarbon feedstock to form a heated hydrocarbon feedstock. The heated hydrocarbon feedstock is separated to recover a vaporized light portion and a remaining liquid portion. The vaporized light portion is superheated and thermally cracked to recover a first cracked effluent, and the remaining liquid portion is heated and stripped to recover a stripped vapor mixture and a residue liquid portion. The stripped vapor mixture is separated to recover a vapor comprising the stripping medium and a stream comprising volatilized hydrocarbons. The volatilized hydrocarbons are heated and mixed with hydrogen then hydroprocessed to form crackable heavy hydrocarbons. The hydroprocessed effluent is separated to recover a hydroprocessed liquid stream comprising crackable heavy hydrocarbons and a hydroprocessed vapor stream comprising unreacted hydrogen.

Abstract: Processes and systems for producing olefins from a crude oil include a steam cracking furnace having a radiant heating section and a convective heating section. One or more heating coils are disposed in the convective heating section for heating a heat transfer fluid. A first heat exchanger heats the crude oil with the heated heat transfer fluid, and the heated crude oil is desalted to form a desalted crude. A second heat exchanger heats the desalted crude with the heated heat transfer fluid to form a preheated desalted crude, which is separated in a first separator to recover a hydrocarbon vapor fraction and a hydrocarbon liquid fraction. A heating coil in the convective section superheats the hydrocarbon vapor fraction and a radiant heating coil in the radiant heating section thermally cracks the superheated vapor fraction to recover a first cracked effluent comprising olefins.

Abstract: A process including preheating a hydrocarbon feed in a first preheat zone of a convection section, recovering a preheated hydrocarbon stream; heating the preheated hydrocarbon stream in a secondary transferline exchanger, recovering a heated hydrocarbon stream; feeding the heated hydrocarbon stream to a second preheat zone of the convection section to vaporize a portion of heated hydrocarbon stream, recovering a cracking feedstream; cracking hydrocarbons in the cracking feedstream in one or more coils in a radiant section, recovering a cracked hydrocarbon product; and cooling the cracked hydrocarbon product in the secondary transferline exchanger in indirect heat exchange with the preheated hydrocarbon stream, recovering a cooled hydrocarbon product stream.

Abstract: Systems and processes for cracking hydrocarbons to produce olefins herein includes heating a hydrocarbon feedstock or a mixture comprising steam and hydrocarbons to a first temperature to form a preheated feed, and also include electrically heating steam to a second, higher, temperature to form a superheated reaction steam. The preheated feed is then mixed with the superheated reaction steam to form a reaction mixture at a cracking temperature, thereby cracking the hydrocarbons to form olefins, producing a reaction effluent. The reaction effluent is then quenched and separated effluent to recover the olefins.

Abstract: A process including preheating a hydrocarbon feed in a first preheat zone of a convection section, recovering a preheated hydrocarbon stream; heating the preheated hydrocarbon stream in a secondary transferline exchanger, recovering a heated hydrocarbon stream; feeding the heated hydrocarbon stream to a second preheat zone of the convection section to vaporize a portion of heated hydrocarbon stream, recovering a cracking feedstream; cracking hydrocarbons in the cracking feedstream in one or more coils in a radiant section, recovering a cracked hydrocarbon product; and cooling the cracked hydrocarbon product in the secondary transferline exchanger in indirect heat exchange with the preheated hydrocarbon stream, recovering a cooled hydrocarbon product stream.

Abstract: A system for cracking hydrocarbons including a fired heater having a radiant section and a convective section. The radiant coil is disposed within the radiant section of the heater, the radiant coil having three to seven rows of tubes, wherein each row comprises two multi-pass tubes, and wherein the multi-pass tubes of the three to seven rows of tubes are collectively disposed symmetrically or pseudo symmetrically within the radiant section of the heater. The system further including a transfer line exchanger fluidly connected to an outlet tube of each of the three to seven rows of tubes.

Abstract: Catalytic dehydrogenation wherein feed is passed in one direction through the bed in a first cycle and heating gas is passed in an opposite direction in a second cycle to provide the endothermic heat of reaction and regenerate catalyst. The operation is controlled to balance properly heat absorbed during dehydrogenation and heat input during regeneration; e.g., by having catalyst of different activities over the length of the bed.

Abstract: A quench cooler or transferline heat exchanger for quenching the effluent from a hydrocracking furnace has an inlet coupling between the cracking furnace tubes and the tubes of the quench cooler which splits the flow into a plurality of branches. The flow passages are configured to initially decelerate and then re-accelerate the gas. This involves a conical diverging diffuser section and then a tapered and branched converging section. The cross sectional transitions are smooth to avoid dead spaces and minimize pressure loss.