Unit processes

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Related to Unit processes: Unit operations

Unit processes

Processes that involve making chemical changes to materials, as a result of chemical reaction taking place. For instance, in the combustion of coal, the entering and leaving materials differ from each other chemically: coal and air enter, and flue gases and residues leave the combustion chamber. Combustion is therefore a unit process. Unit processes are also referred to as chemical conversions.

Together with unit operations (physical conversions), unit processes (chemical conversions) form the basic building blocks of a chemical manufacturing process. Most chemical processes consist of a combination of various unit operations and unit processes.

The basic tools of the chemical engineer for the design, study, or improvement of a unit process are the mass balance, the energy balance, kinetic rate of reaction, and position of equilibrium (the last is included only if the reaction does not go to completion). See Chemical engineering, Unit operations

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The lubricants unit processes heavy oils (paraffin-based) imported to produce lubricating oils, bitumen, asphalt, sulphur, waxes and greases.

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The Big Island unit processes soda semi-chem liquor, so causticizing impact is not relevant on that unit.

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The new pilot plant is capable of automatic, fully integrated, continuous operation of all unit processes, from feed preparation to production of final metal products.

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The sand reclamation unit processes from 8000-9000 tons of sand per year.

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Unfortunately, studies show that most noticeable odors from a treatment plant are often a blend of odors from many unit processes.

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The unit processes available include solvent extraction and desolventizing, neutralizing/washing/bleaching, hydrogenation and deodorizing.

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The unit processes multiple rolls simultaneously and random loading allows addition of a second or third film roll after processing is underway.