Abstract
Chemical operations can be classified as techniques of operation, specialized operations, and unit operations. This chapter focuses on unit operations. Techniques of operation relate to the principles and practice of materials handling; sampling and testing; measuring, for example, weight, length, or volume; the use of instruments, for example, in remote control; and the use of services, such as steam, cooling water, or compressed air. Each technique is applicable to a greater or lesser degree to all chemical operations involving solids, liquids, and gases. Basic unit operations can be defined as those by which chemicals undergo physical change, such as a reduction in particle size, a change in crystal form, or the change of a liquid to vapour. Unit operations may be carried out on a batch basis or on a continuous basis. It is important to distinguish between unit operations and unit processes, such as esterification, nitration, or sulphonation, which are chemical changes by which new compounds are formed. They are, however, interrelated because no unit process can be carried out in the chemical factory without the application of one or more unit operations.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call