What is a coker at a refinery?
What is a coker at a refinery?
In a refinery, the coker is the most extreme of the bottoms upgrading process units. A coker takes the lowest value bottoms material (vacuum resid) and cracks it to the point that all of the resid is eliminated, yielding only lighter fractions and solid carbon (pet coke).
What is the coker process?
2.3. Coking processes are processes in which the feedstock is thermally decomposed into lower boiling products. The major subforms of the coking process are (1) the delayed coking process and (2) the fluid coking process.
What is the function of a coker?
These small spaniels were originally bred to hunt birds. They were especially skilled at hunting a type of bird called the woodcock. This is where the Cocker Spaniel’s name comes from.
What is the purpose of coking process in oil refinery?
Coking is a refinery unit operation that upgrades material called bottoms from the atmospheric or vacuum distillation column into higher-value products and, as the name implies, produces petroleum coke—a coal-like material.
What is a coker in oil and gas?
Coker Units, or Cokers, are oil refinery processing units that convert residual oil and process residues leftover after the initial crude distillation into higher value products and petroleum coke, a coal-like material used as a fuel input or a manufacturing raw material in a variety of industries.
What is a fluid coker?
A fluid coker is a simplified version of a flexicoker in which coke is continuously drawn off, but only gasified to the extent necessary to fuel the coking process. Excess pet coke is still produced as a product.
What is coker naphtha?
Coker naphtha is a naphtha range product from the coker unit. Coker naphtha is typically hydrotreated to saturate the relatively high level of olefins and then fed to the reformer for upgrading to reformate.
What is the difference between coking and cracking?
Coking is severe thermal cracking. The residue feed is heated to about 475 to 520 °C (890 to 970 °F) in a furnace with very low residence time and is discharged into the bottom of a large vessel called a coke drum for extensive and controlled cracking.
What is coker in oil and gas?
What is coker dust?
Coal dust that has been coked by the heat of an explosion and has assumed different forms under different conditions; usually found either near the origin of the explosion or in a room or wide place where the velocity of the explosion is low and there is insufficient oxygen for complete combustion of the coal dust.
What is Visbreaking in refinery?
Visbreaking is a mild thermal cracking process applied to reduce the viscosity of VDR to produce fuel oil and some light products to increase the distillate yield in a refinery .
What is cracking and coking?
What is fluid coking?
Fluid coking unit means a refinery process unit in which high molecular weight petroleum derivatives are thermally cracked and petroleum coke is continuously produced in a fluidized bed system.
What is coking and decoking?
petroleum refining In petroleum refining: Visbreaking, thermal cracking, and coking. Decoking is a routine daily occurrence accomplished by a high-pressure water jet. First the top and bottom heads of the coke drum are removed. Next a hole is drilled in the coke from the top to the bottom of the vessel.
Where is naphtha from?
Naphtha (/ˈnæpθə/ or /ˈnæfθə/) is a flammable liquid hydrocarbon mixture. Mixtures labelled naphtha have been produced from natural gas condensates, petroleum distillates, and the distillation of coal tar and peat. In different industries and regions naphtha may also be crude oil or refined products such as kerosene.
What is difference between coke and coal?
Coal and Coke are both a type of fossil fuels. The difference between these two fuels is that coal is mostly carbon but coke contains mostly water and less than half the carbon content of coal.