middendistillaten

Middendistillaten are petroleum fractions obtained during the distillation of crude oil that lie in the intermediate range of boiling points, between light distillates (such as naphtha and gasoline) and heavy fuels (such as fuel oil). The principal constituents are kerosene and diesel fuel, with lighter light-gas-oil fractions sometimes included. They are produced in the atmospheric distillation step and can be upgraded through refining processes such as hydrodesulfurization, hydrotreating, catalytic cracking or hydrocracking to meet product specifications and environmental requirements.

Applications and uses commonly center on fuels. Kerosene is used as aviation fuel (jet fuel) and for heating or illumination, while diesel fuels power most on-road and off-road diesel engines. Other middle distillates may serve as industrial fuels or as feedstocks for petrochemical processing. The exact composition and yield depend on crude oil quality and the refinery configuration, as well as on downstream processing aimed at meeting market specifications.

Environmental and regulatory considerations affect middendistillaten through sulfur content, aromaticity, and emissions standards. Many jurisdictions require ultra-low sulfur levels for diesel and jet fuels to reduce particulate and sulfur oxide emissions. Refiners optimize production to balance demand, regulatory constraints, and fuel performance, often blending different streams to achieve compliant, stable products.

In energy statistics and policy, middendistillaten constitute a major category of refined petroleum products, covering fuels used in transportation and heating as well as certain industrial applications. See also: petroleum refining, distillation, diesel fuel, kerosene.