Chemical engineering is stream of engineering where the application of physical science like chemistry and physics, and life sciences as biology, microbiology and biochemistry along with mathematics, to the process of converting raw materials or chemicals into more useful or valuable forms is done. Moreover than producing useful materials, modern chemical engineering is also related to pioneering valuable new materials and techniques like as nanotechnology, fuel cells and biomedical engineering. Chemical engineering on a broader context includes the design, improvement and maintenance of processes intermixing chemical or biological transformations for a very big manufacture. Chemical engineers take care of the steps as to make certain that chemical processes are operated safely, sustainably and economically. Chemical engineers in this branch are generally works as a process engineer. A related term with a wider definition is chemical technology. A person employed in this field is called a chemical engineer.
Chemical engineering has its practical usage in preparing a range of products and services. The chemical industry has a large scope in creating and developing inorganic and organic industrial chemicals and petrochemicals, agrochemicals, plastics, elastomers, oleochemicals, explosives, ceramics, dietary supplements fuels detergents and detergent products, fragrances and flavors, additives, and pharmaceuticals.
The basis of chemical engineering as according to principles of science is conservation of mass, conservation of momentum and conservation of energy. The movement of mass and energy around a chemical process are evaluated applying mass balances and energy balances, laws that apply to discrete parts of equipment, unit operations, or an entire plant. In the process chemical engineers do also use principles of thermodynamics, reaction kinetics, fluid mechanics and transport phenomena. These tasks now are tested on complex software models known as process simulators.
As in the modern period chemical engineering is playing much extensive role. Chemical engineers are now involved into the development and production of different range of products as well as in commodity and specialty chemicals. The category of these products of modern age includes high performance materials like aerospace, automotive, biomedical, electronic, environmental, space and military applications. Some of the examples of these products are fabrics, dye-sensitized solar cells, adhesives and composites for vehicles ultra-strong fibers, bio-compatible materials for implants and prosthetics, gels for medical applications, pharmaceuticals, and films with special dielectric, optical or spectroscopic properties for opto-electronic devices.
More chemical engineering is also intermixed with biology and biomedical engineering. It also has been observed that many chemical engineers work into biological projects like as biopolymers (proteins) and mapping the human genome. With expansion of technology the line between chemists and chemical engineers is fading away and more and more chemical engineers applying their knowledge and learning into innovation.