Chemical engineer is a professional, who is equipped with the knowledge of chemical engineering and deals with the design and operation of plants and equipment. In general, a chemical engineer has enough knowledge to understand the chemical processes and the system in all equipment used in the plant. He is the main person for operating any chemical plant in the world, such as petroleum refinery, fertilizers plant, medicine factory, cosmetic factory, desalination water sector, food industry… etc. To do these jobs, the chemical engineer must have enough knowledge of the basic principles of engineering and the deep quantitative understanding for these technological processes. This is reflected in the curriculum of the chemical engineering departments, which includes the study of applied mathematics, thermodynamics, fluid mechanics, heat and mass transfer, chemical separation processes, chemical reaction kinetics and unit operations. For this reason chemical engineers have a prospective career and are in great demand, since the large number of industries, depend on the synthesis and processing of chemicals and materials.