C. E. Nelson & Associates Proudly Represents Expansion Joints (metallic and non-metallic), Dampers (guillotine, louver, diverter), Gas Turbine Exhaust Systems. Field service and repairs. Air Emissions, Gas Turbine Auxiliary Systems, Noise Control, Turnkey Buildings, Retrofit. Process Furnaces for Oil Refining, Petrochemical, and Chemical Industries. New Units and Retrofits. Environmental, Efficiency, and Process Studies. Hughes Anderson; Custom shell and tube heat exchangers for refineries, chemical and fertilizer plants, renewable fuels. New units and repairs. Gasketed, Brazed and Welded, Plate Heat Exchangers, Air Cooled Heat Exchangers, Cooling Towers, Printed Circuit HX’s, Economizers, Double Tube Safety HX’s, Air Dryers, Preheaters. Full length tube liners to eliminate leaks. Liners and installations. Graphite Heat Exchangers, Condensers, Evaporators, and Reboilers. HCl Synthesis Units, Graphite Columns and Internals, Quench Systems, Centrifugal and Axial Flow Pumps. Process Burners, Flares, Incinerators, Aftermarket Parts, Retrofits.