Nitration reaction is highly exothermic. So it must me controlled by systematic

Question

Nitration reaction is highly exothermic. So it must me controlled by systematic cooling designed to withdraw the energy involved.

BATCH NITRATION:

nitration is usually done in closed cast iron or steel vessels. nitrator consists of a cylindrical vessel containing some kind of cooling surface, a means of agitation, feed inlets and product outlets line. the contents of nitratot are dumped rapidly into a large volume of water contained in a drowning tub.

advantage: high coolant velocity

disadvantage: fouling and scaling problem. cleaning is not easy.

Explanation / Answer

QUESTIONS . How to control the nitration reaction conditions? Which other method can also be employed to reduct the nitro Compare their advantages and disadvantages 2 What is the role of hydrosulfite and sodium bisulfite used in the experiment? REFERENCES Zhuo Chao, Shen Yongjia, Higher Education Press, "the pharmaceutical industry professional experiment" P127-128,2007

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