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A process in which light straight chain paraffins are transformed with proper catalyst into branched chains...

A process in which light straight chain paraffins are transformed with proper catalyst into branched chains with the same carbon number and high- octane numbers
a. Write the name of the process and briefly explain.
b. Draw and explain the above process.

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Expert Solution

Answer:-

Isomerisation is a process in which light straight chain paraffins are transformed with proper catalyst into branched chains with the same carbon number and high- octane numbers.

The hydrotreated naphtha (HTN) is fractionated into heavy naphtha between 90–190 °C (190–380 F) which is used as a feed to the reforming unit. Light naphtha C5 - 80 °C (C5 - 180 F) is used as a feed to the isomerization unit. There are two reasons for this fractionation: the first is that light hydrocarbons tend to hydrocrack in the reformer. The second is that C6 hydrocarbons tend to form benzene in the reformer. Gasoline specifications require a very low value of benzene due to its carcinogenic effect.

b)

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