Equipment and supplies Fluid dynamics Chemical engineering 3 Chemical process control 3 Design and construction 3 Chemistry, Technical 2 Data processing 2 rhagor ... Energy facilities 2 Extraction (Chemistry) 2 Heat exchangers 2 Natural gas 2 Oil storage tanks 2 Petroleum refineries 2 Pipe and fluid dynamics 2 Plate towers 2 Shells (Engineering) 2 Storage 2 Absorption and adsorption 1 Adsorption 1 Ash disposal 1 Biochemical engineering 1 Bioenergetics 1 Building materials 1 Bulk solids handling 1 Chemical industry 1 Chemical kinetics 1 Chemical processes 1 Chemical reactors 1 Chemistry 1 Compressed air 1 llai ...