Reboiler of fractionating column is an important type of heat exchangers in the refinery industry, chemical industry, light industry and so on.

Contradictions exist within the China's refinery industry. While total capacity is large, individual capacity and high sulfur-content crude processing capacity is small.

Some application in refinery industry and agriculture are used for illustrating a fact that a great economic and social benefit can be obtained from the NIR technique's applications in various area.