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Question # 5 Question # 4 A hydrotreater prepares vacuum gas oil ( VGO ) feed to another unit. It is expected to reduce the

Question # 5Question # 4
A hydrotreater prepares vacuum gas oil (VGO) feed to another unit. It is
expected to reduce the sulfur content in the feed from 5.0wt% to 0.1wt%. The
feed flow rate is 25,000BPD and its density is 870kgm3. The hydrotreater
operates at a temperature of 410C and pressure of 50bar.
a) Calculate production of hydrogen sulphide (kgh) from the unit.
b) What is the conversion across the bed, if the temperature rise across the
bed is limited to 25C.
Following additional information is given:
Specific heat of feed mixture is 3.5kJkg.C
Average molecular weight of sulfur compounds is 152kgkmol.
Average heat of desulfurization reaction (HRA) is -175103kJkmol
Hydrocracking is playing increasingly important role in modern petroleum
refinery. Discus's the following aspects of this process.
Chemistry with examples of four reactions
Catalyst function and types
Operating conditions and their significance.
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