Dictionary
Hexane
liquid hydrocarbon (<strong>C6H14</strong>), 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 <sup>o</sup>C above 0 <sup>o</sup>C during the process.
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.