Hiilivetykoksin

Hiilivetykoksin, also known as petroleum coke or petcoke, is a solid hydrocarbon produced as a byproduct of oil refining. It is formed from the heavy residue left after crude oil has been distilled. The process involves heating these heavy hydrocarbons in the absence of air, causing them to break down into lighter components and leaving behind a solid, carbon-rich material.

The properties of hiilivetykoksin vary depending on the crude oil feedstock and the coking process used. It is typically a black, porous material with a high carbon content and low volatile matter. There are two main types: green coke, which is raw and unprocessed, and calcined coke, which has been further heated to remove impurities and increase its density and electrical conductivity.

Hiilivetykoksin has several industrial applications. Calcined coke is a crucial raw material in the production of aluminum, where it is used to make anodes for the electrolytic smelting process. It is also used in the steel industry as a fuel and a source of carbon. Green coke can be used as a fuel in cement kilns and power plants, although its use is sometimes limited due to environmental concerns related to sulfur content. The handling and processing of hiilivetykoksin require careful consideration of its dust and potential for spontaneous combustion.