Petroleum Coke (Petcoke): A residue high in carbon content and low in hydrogen that is the final product of thermal decomposition in the condensation process in cracking. This product is reported as marketable coke or catalyst coke. The conversion is 5 barrels (of 42 US gallons each) per short ton. Coke from petroleum has a heating value of 6.024-mil Btu/bbl.Petroleum coke is used in a similar fashion to coal. Its heating value exceeds 14,000 British thermal units (Btu)/pound. Coal usually is found in the 8,000 to 13,500 Btu/pound range.The higher Btu content of petroleum coke makes it very attractive from a cost standpoint. Because it takes less total tons of petroleum coke to achieve the desired heat input, transportation costs drop. Petroleum coke also has a lower ash content than coal, which reduces the problem of bottom ash disposal and particulate the collection.Coal is a higher quality product, however, and if the price is right, buyers choose coal over petroleum coke every time.The way petroleum coke was used up until a couple of years ago was strictly on a microbasis, where someone might have a boiler, cement kiln or steam boiler for making electricity in relative proximity to a refinery and their emissions limit or technology would allow them to use a certain percentage of this product in their blend.The proximity of refineries to power plants also influences the amount of petcoke purchased for use in electricity generation. This is a win/win for both the refinery and the power plant, because it gets the petcoke off the refinery's property and results in a "cheap” form of fuel for the power plant.In the past few of years, there has been an increase in the amount of petcoke produced and because of that you had some more aggressive marketing of the product made to people who operate coal-fired generating plants. It could go to a plant that has a scrubber or large amounts of low-sulphur coal to blend into a high-sulphur product such as petcoke.
Bimco
There are basically three types of pet coke produced, depending on the process of production. The three processes are delayed, fluid and flexi coking, with delayed coking producing over 90%. All three types of petcoke have higher calorific values than coal and contain less volatile matter and ash. The two most important qualities are "green coke" and "calcinated coke". Green delayed petcoke is normally used for cement production.Green delayed coke (or sometimes called raw coke) is a commonly used term for a primary carbonization product from high-boiling hydrocarbon fractions (heavy residues of petroleum or coal processing) produced by the delayed coking process. Green delayed coke could be sold as it is for immediate use. Or it may go through a further process of purification or calcination, ie. the petcoke is further processed by burning, forming calcined coke, which is normally transported hot.Based on the above, I guess you could say that delayed green coke and calcined green coke are the SAME type of coke but of DIFFERENT grade separated by the calcination process.
TORM
Petroleum coke (petcoke) is a residual by-product of oil refining process.Residue components of heavy crude oil is used as feedstock in thermal cracking process known as coking to produce lighter fuels. It is heated to about 475 degrees centigrade to 520 degrees centigrade in a furnace, and is then discharged into a coke drum for extensive and controlled cracking.The cracked lighter product rises to the top of the drum and is drawn off. The heavier product remains and, because of the retained heat, cracks ultimately to coke, a solid carbonaceous substance akin to coal, known as petcoke. Decoking is 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. Then a rotating stem is lowered through the hole, spraying a water jet sideways. The highpressure jet cuts the coke into lumps, which fall out the bottom of the drum for subsequent loading into trucks or railcars for shipment. Cokers produce no liquid residue but yield up to 30 percent petcoke by weight. Much of the low-sulphur product is employed to produce electrodes for the electrolytic smelting of aluminum. Most lower quality coke is burned as fuel in admixture with coal.
Usage of Petcoke for Chinese customersMost of the imported Petcoke (petroleum coke) is used for burning as the fuel materials like power generation, silicon melting, cement industry. This kind of Petcoke normally have high sulphur, metal content, also have high shot coke content (over 30%, some of them is 100% shot coke).
Petroleum coke1.What's the difference between fuel grade Petcoke and Anode grade Petcoke?Fuel grade Petcoke is mainly used for Power generation, Cements Industry and Silicon melting as the materials of Fuel.Anode grade Petcoke is mainly used for Calcining with products of CPC (Calcined Petroleum Coke), which will use for producing of Pre-baked anode and Graphite.Fuel grade Petcoke have high HGI and metal content, mostly with high Shot coke content, Anode grade Petcoke normally with High HGI, Low metal content, 100% sponge coke.Calcined Petroleum coke-CPCWhat's the usage of CPC (Calcined Petroleum coke)?CPC can be used for producing Aluminium Anode, Graphite, etc. according to the different grade.After calcining of GPC (Green Petroleum coke), CPC have the low Ash, V.M, Moisture, and high real density characteristic
