Occidental Chemical Corporation

Chandrasekhar Krishnan

Mohan Singh Saran

Dean R Lagerwall

Jian S Qi

David E Albright

Kevin Zinke

David Harrigan

Vivek Jain

Joseph A Incavo

William L Reuter

Disclosed is a process for reducing corrosion in a system in which aromatic hydrocarbons are separated from a mixture with aliphatic hydrocarbons. The aromatic hydrocarbons are extracted from the mixture using an extracting solvent. The aromatic hydrocarbons are stripped from the extracting solvent with steam and the steam is condensed to form water which is separated from the aromatic hydrocarbons. The separated water is passed through a basic anion exchange column and is then heated to produce the steam.

Process for reducing corrosion in a system for separating aromatic

Disclosed is a method of determining a diffusion coefficient for a diffusant in a particulate. An inert gas is passed through a particulate containing the diffusant. A parameter that is proportional to the concentration of the diffusant in the inert gas is measured over a period of time and the slope of the linear portion of that relationship is determined and is multiplied by a constant.

Determination of diffusion coefficient

Disclosed is a method of preparing a chloro-N-phenylphthalimide. A solution is prepared of a chlorophthalic acid or anhydride and aniline in water as the only solvent and the solution is heated to produce the product. The preferred chlorophthalic acid is 3,4,6-trichlorophthalic acid.

Process for preparing chloro-N-phenylphthalimide

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Grand Island, NY, United States of America

Chandrasekhar Krishnan