There is no universal definition for chemical engineering. The problems which chemical engineers face are too diverse to fall into one category. Chemical engineers solve problems ranging from mathematical analysis to plumbing. The one skill that separates chemical engineers from all other engineers is our knowledge of kinetics (chemical reaction engineering).

Another question you are probably asking is what is the difference between a chemist and a chemical engineer. The difference is the chemical engineer will design the process using the reaction the chemist found and make the product in a profitable way. For example, a chemist discovers that if he mixes two reactants at a high temperature, he will obtain a more valuable product. The company wants to invent a process to make this product using this reaction. From here on is the engineering part of the problem. These following considerations must be used:

• In what should the reaction be carried out? (tank, long pipe, etc.)
• What materials should be used to make the reactor? Should we heat the reagents before or after entering the reactor?
• Where should we obtain the reactants? Make our own or buy them?
• Can we control the process and make good quality products?
• Is the process safe and legal?
• Are there any wastes, and if so how should we dispose of it?

These are just a few considerations for the design of this process. There are many more. This is also just one example of what chemical engineers do. There are many more. We get called upon to do mechanical, electrical, and environmental problems, too. Of course, the chemical engineer in the industry works with all kinds of engineers to solve problems.