Chemical engineering is the branch of engineering that deals with the application of physical science (e.g., chemistry and physics), and life sciences (e.g., biology, microbiology and biochemistry) with mathematics and economics, to the process of converting raw materials or chemicals into more useful or valuable forms. In addition to producing useful materials, modern chemical engineering is also concerned with pioneering valuable new materials and techniques – such as nanotechnology, fuel cells and biomedical engineering.
Chemical engineering largely involves the design, improvement and maintenance of processes involving chemical or biological transformations for large-scale manufacture.
Chemical engineer is the profession in which one works principally in the chemical industry to convert basic raw materials into a variety of products, and deals with the design and operation of plants and equipment to perform such work. In general, a chemical engineer is one who applies and uses principles of chemical engineering in any of various practical applications; primarily with respect to the study of the design, manufacture, and operation of plant and machinery in industrial chemical and related processes. However, modern chemical engineers are becoming more heavily involved in the development of new technologies such as fuel cells, hydrogen power and nanotechnology, as well as working in fields such as polymer engineering and biomedical engineering.