MATERIALS FOR WET OXIDATION PROCESSING EQUIPMENT (SHIPBOARD)

This report is intended to provide an overview of the wet oxidation process and the potential materials of construction for the reaction vessel (for shipboard applications). Since the wet oxidation process requires the containment of corrosive products (the material being processed can range from very acidic to slightly basic and over a broad spectrum of wastes), at elevated temperatures and pressures, these conditions lead to difficult but solvable materials-of-construction problems. Based on the current state of the art, wet oxidation systems can be constructed from commercially pure titanium as well as from titanium alloyed with palladium (0.12-0.25%). This type of system, it is felt, can be operated safely at approximately 500 F with reasonable assurance of moderate life (approximately 10 years). However, should a longer life system be desired and one which is virtually indestructible from a chemical point of view, a tantalum-lined and coated titanium system would provide the best choice of materials. For higher temperature operation up to 600 F and a projected equipment life of 15 years, a ceramic-lined and coated carbon steel or titanium system would have to be developed. Here, an added advantage to ceramic lining is improved heat insulation. This allows for a reduction of external insulation. In addition, a penetration monitoring system (of the electrical resistance type) can be incorporated in the ceramic lining. From an overall design consideration point of view, it appears that the wet oxidation process can be operated in a continuous manner in shipboard installations and the reaction vessel can consist of a piping array configuration. Several distinct operating advantages (viz space-saving) are expected from this configuration, and thus it is recommended that further development of the process and equipment be based on this particular design approach.

• Corporate Authors:

  National Materials Advisory Board

  National Academy of Sciences,National Academy of Engineering
  Washington, DC  United States  20418
• Publication Date: 1973-12

Media Info

• Features: References;
• Pagination: 87 p.

Subject/Index Terms

• TRT Terms: Corrosion resistant alloys; Oxidation; Sewage treatment; Ships; Titanium alloys; Water quality management
• Old TRIS Terms: Shipboard sewage treatment; Wet oxidation process
• Subject Areas: Environment; Marine Transportation; Materials; Vehicles and Equipment;

Filing Info

• Accession Number: 00051238
• Record Type: Publication
• Source Agency: National Materials Advisory Board
• Report/Paper Numbers: NMAB-312 Final Rpt
• Contract Numbers: DA-49-083-OSA-3131
• Files: TRIS
• Created Date: Feb 28 1974 12:00AM