Exchange of information concerning leaky valves on paste pumps

Technical Report · Fri Jan 01 00:00:00 EDT 1943

OSTI ID:5966970

Pier, M

This series of correspondence concerns an exchange of experience following trouble in a Gelsenberg coal stall arising from leaking valves on a paste pump. At Gelsenberg, each nine adjacent paste presses worked for two chambers with a common collector main line, the two divisions of which went to the two chambers with a common collector main line, the two divisions of which went to the two chambers. Normally, a pump was kept in reserve and each pump had two hand-operated shut-off valves on the pressure side. There were check valves on the collector line. In the accident at Gelsenberg, a pressure valve on one of the operating pumps sprang a leak. The temperature in the preheater stall suddenly rose, the preheater was extinguished, and the temperature was quickly lowered with cold gas. The temperature rise occurred because the suction valve as well as the defective pump was cut through so that the remaining three pumps forced the coal paste through the one pump back into the pasting oil tank. The leak was so strong that converter pressure dropped; no paste was reaching the converter. The check valve at the converter inlet remained tight enough so that the converter contents were not discharged backwards before the shutoff valves of the leaky pump were turned off. Variation of situations precluded much generalization of experiences, but replies from other plants had indicated that no instance of stall damage had arisen from leaky valves. These had always been discovered in time to prevent damage. When irregularities were discovered in the valves, the paste pumps were to be shut down on the pressure side before flushing. Regular inspection of converter check valves was recommended. Location of check valves behind the presses was advised against, although plant conditions made this advisory nondefinitive. 3 figures.

• Research Organization: I.G. Farbenindustrie, A.G., Ludwigshafen (Germany)
• OSTI ID: 5966970
• Report Number(s): TOM-257-761-769
• Country of Publication: United States
• Language: German

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL LIQUEFACTION PLANTS
PUMPS
RECOMMENDATIONS
COAL PASTES
HYDROGENATION
PRESSURE VESSELS
PRESSURE DROP
FAILURE MODE ANALYSIS
VALVES
LEAKS
BERGIUS PROCESS
COAL
DIAGRAMS
FUEL OILS
GASES
GERMANY
HEATERS
HIGH PRESSURE
HIGH TEMPERATURE
SYNTHETIC FUELS
TANKS
TEMPERATURE CONTROL
WASHING
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CLEANING
COAL LIQUEFACTION
CONTAINERS
CONTROL
CONTROL EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FLUIDS
FOSSIL FUELS
FUELS
INDUSTRIAL PLANTS
LIQUEFACTION
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
SYSTEM FAILURE ANALYSIS
SYSTEMS ANALYSIS
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
010403 - Coal & Coal Products- Hydrogenation- (-1987)