What is petrochemical


Petrochemicals, a branch of chemistry that deals with processes and procedures that make it possible, on the basis of natural gas or crude oil, to produce raw materials and intermediates for the manufacture of plastics, elastomers, fibers, detergents, dyes, textile auxiliaries and others. to obtain. The processes for the production of fuels, heating and lubricating oils are not included in the P. The most important starting products for P. are methane, ethene, propene, butenes, butadiene, BTX aromatics and occasionally ethyne, as it can also be used on a large scale for the production of aliphatic finished and intermediate products (acetylene chemistry) and below is also produced from natural gas or petroleum fractions. Until the end of the 1940s, the carbochemistry (coal chemistry) was decisive for the provision of intermediate products for the chem. Industry contributed. With the development of efficient petroleum processing, the importance of carbochemistry declined in the period that followed. Simultaneously with the provision of petrochem. Primary chemicals, especially the lower olefins and aromatics, a structural change within the chem. Industry. The majority of the aliphatic compounds produced today are derived from C2- to C4- made olefins; Ethene occupies a leading position and, along with sulfuric acid, chlorine and methanol, is one of the major products of chem. Industry.

At the moment, the provision of primary chemicals based on carbochemistry is still too expensive, so that no significant decrease in P. is to be expected for the time being.

In the Anglo-Saxon language area, P. is understood to mean rock chemistry.

Petrochemicals. Fig .: Production of basic chemicals from crude oil and coal.