A B C D E F G H I J K L M N O P R S T U V Z W

H

Hexane – liquid hydrocarbon (C6H14), ingredient of petrol.

Hydrates - solid, crystal, icy features produced from natural gas and free water under specific pressure and temperature; temperature of the environment can be 10–30 oC above 0 oC during the process.

Hydrocarbons – organic compounds that contain carbon (C) and hydrogen (H).

Hydro-cracking – cracking of hydrocarbon molecules using hydrogen and a catalyst.

Hydro-desulphurisation – removal of sulphur components from petroleum products using hydrogen and a catalyst.

Hydro-processing – removal of undesired compounds (sulphur, hydrogen) from hydrocarbons using hydrogen and a catalyst.

Hydro-skimming refinery – the simplest type of refinery which has no process for refining atmospheric or vacuum residues as a component.

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