Solvent refined lignite process development. Final technical report, June 16, 1977-June 15, 1978

Technical Report · Fri Jan 05 00:00:00 EST 1979

DOI:https://doi.org/10.2172/6029716· OSTI ID:6029716

Severson, D. E.

Throughout Project Lignite there were evolutionary changes in the process and in the process development unit (PDU). Objectives of the study included: (1) to determine if the process would be self-sufficient in production of process solvent; (2) to determine the most favorable gas recycle and gas make-up requirements; (3) to provide information necessary for economic evaluation of the SRL process; and (4) to provide design criteria for subsequent scaleup. The continuation of Project Lignite demonstrated the ability of the PDU to operate for extended periods. Three runs, each scheduled for 28 days of continuous operation, were completed. The effects of solvent recycle and off-gas cleaning and recycling were determined. Several runs using feed coal from different sources were made. Accumulation of solids in the reactor remained an unresolved problem in maintaining long-term operation of the PDU. Unreacted lignitic materials together with the ash evidently agglomerated and were not removed with the slurry and gas. Metallurgical studies to determine the effects of the reactor environment on various materials of construction were conducted. Prestressed coupons of seven different metals were placed in the reactor. Only carbon steel showed any significant general attack, and there was no evidence of transgranular or intergranular corrosion in any of the specimens.

• Research Organization: North Dakota Univ., Grand Forks (USA). Engineering Experiment Station
• DOE Contract Number: EF-77-C-02-4189
• OSTI ID: 6029716
• Report Number(s): FE-4189-15
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
36 MATERIALS SCIENCE
COAL LIQUEFACTION
BENCH-SCALE EXPERIMENTS
PROCESS DEVELOPMENT UNITS
COAL LIQUEFACTION PLANTS
MATERIALS TESTING
LIGNITE
CHEMICAL REACTIONS
SYNTHESIS GAS
CARBON STEELS
CATALYSTS
COAL LIQUIDS
DEASHING
ECONOMICS
FLOWSHEETS
HYDROGENATION
INCOLOY 800
SOLVENT-REFINED COAL
STAINLESS STEEL-304
STAINLESS STEEL-310
STAINLESS STEEL-316
STAINLESS STEEL-347
ALLOYS
BROWN COAL
CARBONACEOUS MATERIALS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL
CORROSION RESISTANT ALLOYS
DIAGRAMS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GASES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY ALLOYS
INDUSTRIAL PLANTS
IRON ALLOYS
IRON BASE ALLOYS
LIQUEFACTION
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NIOBIUM ADDITIONS
NIOBIUM ALLOYS
STAINLESS STEELS
STEELS
TESTING
THERMOCHEMICAL PROCESSES
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction
360105 - Metals & Alloys- Corrosion & Erosion