A process engineering consultant is generally a chemical engineer specialized in process engineering, that provides services supporting an engineering company or an industrial plant with chemical engineering subjects.
Process engineers generally work for a engineering consulting company or an industrial in the process department.
Process engineers are able to design modifications, evaluate optimizations in existing industrial plants or participate in projects elaborating the documentation required to design an industrial process.
Process engineers define the main industrial equipment for any kind of indutries, setting up the operating conditions and design parameters.
After the definition of the main paraments the rest of the disciplines (mechanical, piping, electrical, instrumentation, civil, safery) can complement the desing of the new facility or installation.
Process design is like the heart of any industrial process.