Accession Number : ADA302937

Title :   Shore-to-Ship Steam Purification Inverse Flash Steam Purifier (IFSTEP) Field Unit Tests.

Descriptive Note : Technical rept.,

Corporate Author : NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA

Personal Author(s) : Murphy, G. ; Maga, S. ; Silbernagel, M.

PDF Url : ADA302937

Report Date : OCT 1995

Pagination or Media Count : 47

Abstract : The Inverse Flash Steam Purifier (IFSTEP), a device to remove noncondensable gases from steam, was developed, tested, and evaluated. IFSTEP provides an alternative to methods that generate pure steam. Steam can now be purified at selected points in the steam distribution line, thus improving steam for facilities where required. This differs from reverse osmosis, de-mineralization, and de-alkalization that necessarily purify all the steam, as they are feed water treatment methods. With IFSTEP, simple water softening is adequate. The expense of the comprehensive feed water treatment, hazardous material handling, and labor intensive operation is diminished. Test data illustrate the behavior of IFSTEP during early bench tests and current field tests. Under a wide variety of upstream pressure and downstream steam demands, including boiler shutoff and startup conditions, IFSTEP consistently provided clean steam. The best results were achieved with a pressure difference control valve, which maintained a constant pressure or temperature difference between the shell and tube side of the heat exchanger. A prototype design is presented that reflects the improvements suggested by all previous testing. The prototype is modular to allow capacity growth and to meet most activity requirements. jg p2

Descriptors :   *SHIPS, *PURIFICATION, *STEAM, *HAZARDOUS MATERIALS, *SHORES, CONTROL, REQUIREMENTS, METHODOLOGY, EXPERIMENTAL DATA, CAPACITY(QUANTITY), DISTRIBUTION, GROWTH(GENERAL), FIELD TESTS, PROTOTYPES, HEAT EXCHANGERS, GASES, COSTS, PURITY, REVERSE OSMOSIS, WATER TREATMENT, PRESSURE, OPERATION, INVERSION, SIDES, VALVES, LABOR, DOWNSTREAM FLOW, TUBES, BENCH TESTS, MATERIALS HANDLING, FLASHES, WATER SOFTENERS, FEED WATER.

Subject Categories : Thermodynamics
      Inorganic Chemistry
      Physical Chemistry
      Marine Engineering
      Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE