Petroleum Coke
Asia-Pacific Economic Cooperation (APEC)

European Commission - Eurostat
Petroleum coke is a black solid by-product, obtained mainly by cracking and carbonising petroleum derived feedstock, vacuum bottoms, tar and pitches in processes such as delayed coking or fluid coking. It consists mainly of carbon (90 to 95%) and has a low ash content.

It is used as a feedstock in coke ovens for the steel industry, for heating purposes, for electrode manufacture and for production of chemicals. The two most important qualities are "green coke" and "calcinated coke".

This category also includes "catalyst coke" deposited on the catalyst during refining processes; this coke is not recoverable and is usually burned as refinery fuel.

International Energy Agency (IEA)
Petroleum coke is a black solid by-product, obtained mainly by cracking and carbonising petroleum derived feedstock, vacuum bottoms, tar and pitches in processes such as delayed coking or fluid coking. It consists mainly of carbon (90 to 95%) and has a low ash content.

It is used as a feedstock in coke ovens for the steel industry, for heating purposes, for electrode manufacture and for production of chemicals. The two most important qualities are "green coke" and "calcinated coke".

This category also includes "catalyst coke" deposited on the catalyst during refining processes; this coke is not recoverable and is usually burned as refinery fuel.

International Energy Forum Secretariat (IEFS)
Petroleum is a complex mixture of liquid hydrocarbons, chemical compounds containing hydrogen and carbon, occurring naturally in underground reservoirs in sedimentary rock. Petroleum is normally found at considerable depths beneath the earth’s surface, where under pressure, it is essentially liquid. At the surface and atmospheric pressure, petroleum comprises both natural gas and crude oil.

The word petroleum comes from the Latin word, petra, meaning rock, and oleum,meaning oil. The word “petroleum” is often interchanged with the word “oil”. Broadly defined, it includes both primary (crude oil or unrefined) and secondary (refined)
products.

Latin American Energy Organization (OLADE)
Oil residue carbon: a by–product of the delayed coking unit in refineries. When correctly processed, it becomes a very valuable product used to manufacture electrodes.

United Nations Economic Commission for Europe (UNECE)
Petroleum coke is a black solid by-product, obtained mainly by cracking and carbonising petroleum derived feedstock, vacuum bottoms, tar and pitches in processes such as delayed coking or fluid coking. It consists mainly of carbon (90 to 95%) and has a low ash content.

It is used as a feedstock in coke ovens for the steel industry, for heating purposes, for electrode manufacture and for production of chemicals. The two most important qualities are "green coke" and "calcinated coke".

This category also includes "catalyst coke" deposited on the catalyst during refining processes; this coke is not recoverable and is usually burned as refinery fuel.

UNSD Energy Statistics Section
A shiny, black solid residue obtained by cracking and carbonization in furnaces. It consists mainly of carbon (90 to 95%) and generally burns without leaving any ash. It is used mainly in metallurgical processes.

It excludes those solid residues obtained from carbonization of coal.