《奥沙利铂》PPT课件.ppt

Chemical Reaction Engineering
2008年9月1日
Introduction
Every industrial chemical process is designed to produce economically a desired product from a variety of starting materials through a ession of treatment steps.
Fig. 1 shows a typical situation. The raw materials undergo a number of physical treatment steps to put them in the form in which they can be reacted chemically.
2
Introduction
They then pass through the reactor.
The products of the reaction must then undergo further physical treatment separations, purifications, etc. --for the final desired product to be obtained.
Design of equipment for the physical treatment steps is studied in the unit operations.
3
Introduction
In this unit we are concerned with the chemical treatment step of a process.
Economically this may be an inconsequential unit, say a simple mixing tank.
More often than not, however, the chemical treatment step is the heart of the process, the thing that makes or breaks the process economically.
4
Introduction
Design of the reactor is no routine matter, and many alternatives can be proposed for a process.
In searching for the optimum it is not just the cost of reactor that must be minimized.
One design may have low reactor cost, but the materials leaving the unit may be such that their treatment requires much higher cost than alternative designs.
5
Introduction
Hence, the economics of