WebTypes of Coker Units. There are two primary types of coker units used in petroleum refining: delayed coker units (DCU) and fluid coker units. Of the two, the delayed coker unit (DCU) is by far the most common and involves two or more drums working in tandem. When one drum is taken offline, production is simply shifted to the next drum. WebThe delayed coking process involves heating hydrocarbon liquids in a coking furnace and transferring the heated liquids to a coking drum where the liquids decompose into coke and volatile components. In order to practically use the delayed coking process, a coker fractionation system is needed along with the coking furnace and coking drums.
Comparison of thermal cracking and hydrocracking yield distributions
WebAug 9, 2016 · Coking is a refinery unit operation that upgrades material called bottoms from the atmospheric or vacuum distillation column into higher-value products. As the name implies, the end product is petroleum coke, a coal-like material. Types of coking. Two types of coking processes exist — delayed coking and fluid coking. Webcoker gas composition is given in Table below. Fluid Coking Fluid coking is a thermal cracking process consisting of a fluidized bed reactor and a fluidized bed burner as shown in Figure below. Vacuum residue is heated to 260 °C (500 F) and is fed into the scrubber which is located above the reactor for coke fine particle recovery, fixed wing microlight kits
Fluid and Flexi-Coking FSC 432: Petroleum Refining
WebFluid coking can process heavier VDR and gives a higher distillate yield (and lower coke yield) than delayed coking. Figure 6.9 shows a schematic diagram of flexi-coking. A gasifier is added for conversion of some or all coke produced in the coker in reaction with air and … Three different coking processes are used in the refineries: delayed coking, fluid … WebAug 5, 2024 · Coking (delayed, fluid and flexi) is one of the types of carbon rejection processes. Delayed coking has been chosen by many refineries as an upgrading process due to its low investment cost and the inherent flexibility of the process to process any residuals. In this process, 20–30 wt.% coke is produced as a by-product. Webproperties [12]. Flexi coking differs from fluid coking only because of the presence of gasification unit in flexi-coking. In flexi coking there is complete or partial gasification of the petroleum coke to yield a fuel gas. It is different from the bulk liquid-phase coking in delayed coking. In flexi coking can milk of magnesia dissolve impacted stool