Lockhopper valve testing and development program
In 1976, when the SOA Lockhopper Valve Testing and Development Project was initiated, the most severe process condition for a lockhopper valve was a differential pressure of 500 psi at an operating temperature of 600/sup 0/F. In order to maintain acceptable performance at this condition, valves had to be rebuilt approximately every 500 cycles. In the METC stirred, fixed-bed gasifier, lockhopper (feed) valves have accumulated 4500 cycles at maximum pressures of 165 psig with estimated temperatures of 450/sup 0/F. Cyclone dust removal lockhopper valves have operated successfully for over 4500 cycles with 500/sup 0/ to 700/sup 0/F solids. SOA test valves have performed well in simulated lockhopper service for 16,000 cycles at pressures to 1000 psig and valve body temperatures to 600/sup 0/F. This represents a significant improvement since the start of the project. It is believed that at this time valves can be purchased with a potential service life of 15,000 cycles at 1000 psig and 450/sup 0/F or 200 psig and 1000/sup 0/F. In order to accomplish the testing necessary to develop valves for these service conditions, METC has constructed facilities that can simulate lockhopper service at pressures up to 2000 psig with up to 600/sup 0/F simulated feed materials (limestone) or 2000/sup 0/F simulated ash materials (aluminum oxide or silicon carbide). To date, METC facilities have been used to perform 63 test runs on 36 test valves. Information on test results, new valve designs, materials testing, and pilot-plant experience is being distributed through technical papers, project publications, presentations at Valve Manufacturers Association meetings, and through the sponsorship of conferences.
- Research Organization:
- Department of Energy, Morgantown, WV (USA). Morgantown Energy Technology Center
- OSTI ID:
- 6477820
- Report Number(s):
- DOE/METC/SP-193; ON: DE83010521
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010404* -- Coal
Lignite
& Peat-- Gasification
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
42 ENGINEERING
420200 -- Engineering-- Facilities
Equipment
& Techniques
ASHES
CARBONACEOUS MATERIALS
COAL
COAL GASIFICATION
COAL GASIFICATION PLANTS
CONTAINERS
CONTROL
CONTROL EQUIPMENT
DATA
DESIGN
ENERGY SOURCES
EQUIPMENT
EXPERIMENTAL DATA
FAILURE MODE ANALYSIS
FLOW REGULATORS
FOSSIL FUELS
FUELS
GASIFICATION
HOPPERS
INDUSTRIAL PLANTS
INFORMATION
LEAKS
MANUFACTURERS
MATERIALS
MATERIALS HANDLING
MEASURING METHODS
NUMERICAL DATA
PERFORMANCE TESTING
QUALITY CONTROL
RESIDUES
SPECIFICATIONS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
TECHNOLOGY TRANSFER
TEST FACILITIES
TESTING
THERMOCHEMICAL PROCESSES
VALVES