Title: Recycle-slurry-oil characterization. Quarterly report, April 1, 1982-June 30, 1982
Abstract: A series of thrigy-three coal/oil agglomerations experiments and subsequent analyses and testing provided much information on the use of this process for the pretreatment of coal liquefaction feeds. Coal derived oils were identified that will deash Burning Star coal (10% ash) by coal/oil agglomeration. The results indicate that it is possible to achieve 45% ash removal with 96% recovery of organic matter and product size larger than 1 mm. Acceptable oils included recycle oils produced by the ITSL, H-Coal and SRC-II processes. Under donor liquefaction conditions, the deashed coal gave conversions and yield structures similar to the raw coal. The ash elements Ti, Fe, K, Mg and P are selectively retained in the product. The ash elements Ca, Al and S are selectively rejected. The pyrite/ash ratio and the percentage of Fe/sub 2/O/sub 3/ in the ash are both increased in the product by approximately 1.5 times relative to the feed coal. This result should prove beneficial to processes such as SRC-II that rely on mineral matter catalysis because overall feed ash levels could be reduced while maintaining high concentrations of catalytic iron-bearing minerals. The cleaned coal is expected to give better hydro-liquefaction behavior than raw coal with similar ashmore » levels. It may be possible to further enrich the iron in the ash by using run-of-mine coal. The donor liquefaction behavior of several foreign and domestic coals (candidates for ITSL) were tested in the microautoclave with ITSL pasting solvents at a variety of conditions. Yield structures were determined for some of the runs. Preliminary analyses are presented for the samples from the early Illinois 6 coal ITSL runs. 1 figure, 32 tables.« less
Publication Year: 1983
Publication Date: 1983-03-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot