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Title: Exploratory research on solvent-refined-coal liquefaction. Annual technical progress report, January 1-December 31, 1980

Abstract

This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by the Pittsburg and Midway Coal Mining Co.'s Merriam Laboratory during 1980. Six coals and a coal blend, representing the Interior, Rocky Mountain, Eastern and Northern Great Plains Provinces, were processed in the SRC I and SRC II modes to study the relationship between coal properties and liquefaction behavior. Disposable catalysts and specific compounds were added to Loveridge, Kaiparowits and Blacksville No. 2 coals during SRC II mode liquefaction. Kentucky 9/14, Indiana V and Loveridge coals were processed at short residence times (4 to 9 minutes) in the SRC I mode to evaluate the effects of temperature, pressure, residence time and disposable catalyst addition. Finally, coal from the Powhatan No. 1 Mine was evaluated as a feedstock for major coal liquefaction facilities.

Publication Date:
Research Org.:
Pittsburg and Midway Coal Mining Co., Shawnee Mission, KS (USA)
Sponsoring Org.:
USDOE
OSTI Identifier:
6611645
Alternate Identifier(s):
OSTI ID: 6611645
Report Number(s):
DOE/ET/14800-T4
DOE Contract Number:
AC22-79ET14800
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; COMPARATIVE EVALUATIONS; SRC PROCESS; CATALYSTS; RESEARCH PROGRAMS; CATALYTIC EFFECTS; COAL LIQUEFACTION; EXPERIMENTAL DATA; IRON OXIDES; MOLYBDENUM; PYRITE; TIME DEPENDENCE; YIELDS; CARBONACEOUS MATERIALS; CHALCOGENIDES; DATA; ELEMENTS; ENERGY SOURCES; FOSSIL FUELS; FUELS; INFORMATION; IRON COMPOUNDS; IRON SULFIDES; LIQUEFACTION; MATERIALS; METALS; MINERALS; NUMERICAL DATA; ORES; OXIDES; OXYGEN COMPOUNDS; PYRITES; REFRACTORY METALS; SULFIDES; SULFUR COMPOUNDS; SULFUR ORES; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS 010405* -- Coal, Lignite, & Peat-- Hydrogenation & Liquefaction

Citation Formats

None. Exploratory research on solvent-refined-coal liquefaction. Annual technical progress report, January 1-December 31, 1980. United States: N. p., 1981. Web. doi:10.2172/6611645.
None. Exploratory research on solvent-refined-coal liquefaction. Annual technical progress report, January 1-December 31, 1980. United States. doi:10.2172/6611645.
None. Wed . "Exploratory research on solvent-refined-coal liquefaction. Annual technical progress report, January 1-December 31, 1980". United States. doi:10.2172/6611645. https://www.osti.gov/servlets/purl/6611645.
@article{osti_6611645,
title = {Exploratory research on solvent-refined-coal liquefaction. Annual technical progress report, January 1-December 31, 1980},
author = {None},
abstractNote = {This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by the Pittsburg and Midway Coal Mining Co.'s Merriam Laboratory during 1980. Six coals and a coal blend, representing the Interior, Rocky Mountain, Eastern and Northern Great Plains Provinces, were processed in the SRC I and SRC II modes to study the relationship between coal properties and liquefaction behavior. Disposable catalysts and specific compounds were added to Loveridge, Kaiparowits and Blacksville No. 2 coals during SRC II mode liquefaction. Kentucky 9/14, Indiana V and Loveridge coals were processed at short residence times (4 to 9 minutes) in the SRC I mode to evaluate the effects of temperature, pressure, residence time and disposable catalyst addition. Finally, coal from the Powhatan No. 1 Mine was evaluated as a feedstock for major coal liquefaction facilities.},
doi = {10.2172/6611645},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 01 00:00:00 EST 1981},
month = {Wed Apr 01 00:00:00 EST 1981}
}

Technical Report:

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  • This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburg and Midway Coal Mining Co.'s Merriam Laboratory during 1979. In a series of experiments with varying feed gas composition, low levels (5 to 10 mole %) of carbon monoxide had little effect on the SRC II processing of Pittsburgh Seam coal (Powhatan No. 5 Mine) while higher levels (20 to 40 mole %) resulted in a general degradation of operability and reduced oil yields. Addition of finely divided (approx. 1 ..mu..m) pyrite to the reactive Powhatan coal had little effect on oilmore » yields although the molecular weight of the distillation residue was apparently decreased. When finely divided pyrite and magnetite were added to the less reactive coals from the Loveridge and Blacksville No. 1 Mines (also Pittsburgh Seam), however, substantial increases in oil yields and product quality were obtained. In a comparison of upflow and downflow dissolver configurations with Powhatan coal in the SRC II mode, there was no difference in yields or product quality. A study characterizing specific reactors revealed a significantly higher conversion in the SRC I mode with a reactor approximating plug flow conditions compared to a completely backmixed reactor. In the SRC II mode there was only a slightly higher oil yield with the plug flow reactor.« less
  • This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburg and Midway Coal Mining Co.'s Merriam Laboratory for the period January 1, 1980 through March 31, 1980. A series of experiments was conducted with three western coals to study the relationship between coal properties and liquefaction behavior. All three coals were low in iron (0.2 to 0.4%, dry coal basis) and processing in both the SRC I and SRC II modes does not appear to be feasible at normal conditions without added catalyst. Adding 1 to 2% pyrite to the feed slurrymore » increased oil yields considerably while reducing SRC and IOM yields and improved operability. Product quality was also generally improved by the catalyst. Operability and oil yields were generally found to be better at 450/sup 0/C than at 465/sup 0/C.« less
  • Work continued on the study of disposable catalysts and the effect of specific additives in both the SRC I and SRC II processing modes. At 450/sup 0/C, 2250 psig and 1.0 hour residence time with Loveridge coal in the SRC II mode, yields and hydrogen consumptions were essentially the same for runs with 5 wt % added pyrite or 3.3 wt % added ferric oxide. When Loveridge coal was impregnated with 0.7 wt % molybdenum, slightly higher oil yields and slightly lower hydrocarbon gas, SRC and IOM yields were obtained than with the iron compounds above. When Loveridge coal wasmore » processed in the SRC I mode at 450/sup 0/C, 1900 psig and 26 minutes residence time, there was a 3.7% increase in total oil yield with a corresponding decrease in SRC yield when pyrite was added to the feed slurry. There was a smaller effect with a FeS/sub 2//Fe/sub 2/O/sub 3/ combination and little or no effect when ferric oxide alone was added.« less
  • This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburgh and Midway Coal Mining Company's Merriam Laboratory for the period April 1, 1979 through June 30, 1979. Experimental work included a number of short residence time runs, but discussion of that work has been delayed until a later report. Experimental work reported focuses on an investigation of the decline in solvent quality experienced by the Wilsonville Pilot Plant during runs in support of the SRC I Demonstration Plant. A four run series was initiated with Wilsonville solvent; both the coal used atmore » Wilsonville (Kentucky 6/11 - Pyro Mine) and Kentucky 9/14 coal from the Colonial Mine were used. The effect of pyrite addition to the Pyro Mine coal was investigated. No solvent quality or coking problems were experienced in the Merriam runs. Significant changes in solvent composition were apparent and equilibrated solvent samples were returned to Wilsonville for solvent quality testing.« less
  • This report summarizes the progress of the Exploratory Research on Solvent Refined Coal Liquefaction project by The Pittsburgh and Midway Coal Mining Co.'s Merriam Laboratory for the period July 1, 1979 through September 30, 1979. In a series of experiments with varying feed gas composition, high levels (20 to 40 mol %) of carbon monoxide resulted in a general degradation of operability and reduced oil yields from Powhatan coal (Pittsburgh Seam). Addition of finely divided pyrite to the reactive Powhatan coal had little effect on oil yields although the molecular weight of the distillation residue was apparently decreased. When finelymore » divided pyrite and magnetite were added to the less reactive Loveridge coal (also Pittsburgh Seam), however, a substantial increase in oil yields and product quality was obtained.« less