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The invention pertains generally to coal liquefaction and particularly to The disadvantages of this method are the requirement of a coal particle size...
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www.freepatentsonline.com/4176040.html
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The products of these reactions are recycled to the coal liquefaction zone. are a number of disadvantages associated with the use of these catalysts.
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www.freepatentsonline.com/4051012.html
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COAL; LIQUEFACTION; TECHNOLOGY; STATUS REPORT; Department of Trade and Industry; for the; O C T O B E R 1 9 9 9; TECHNOLOGY; STATUS REPORT; 010; CLEANER COAL TECHNOLOGY PROGRAMME; Coal liquefaction is one source, backed by large recoverable coal reserves globally. Significant coal liquefaction research and...
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www.berr.gov.uk/files/file18326.pdf
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As a result, it was clarified that a coproduction of coal cherilicals with gasoline turned to economic advantages for coal liquefaction process.
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sciencelinks.jp/j-east/article/200016/000020001600A0582...
sciencelinks.jp/j-east/article/200016/000020001600A0582260.php
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I'll boil down the longer story of coal liquefaction. It's burning coal at a low enough temperature to turn it into a liquid fuel--usually as a substitute for petroleum products. The process has been around for 100+ years but with abundant low-cost petroleum was rarely cost-effective.
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www.dailykos.com/story/2006/12/13/72325/159
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Fischer-Tropsch liquefaction of coal is not some futuristic, laboratory scale approach to energy, but is a well characterized readily available option to make motor fuels and other fluid fuels from coal. It was first developed in Germany industrially to make fuel for the Nazis who had limited oil supplies.
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www.dailykos.com/story/2007/1/13/133724/104
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Liquefaction is the process of converting one fuel into oil. Disadvantages. Advantages. Future of Coal. Liquefaction
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watd.wuthering-heights.co.uk/subpages/coal.html
watd.wuthering-heights.co.uk/subpages/coal.html
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There are potential advantages to two-stage coal liquefaction over the direct liquefaction of coal in a single stage in terms of product selectivity and...
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linkinghub.elsevier.com/retrieve/pii/0016236186900712
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This invention relates to a short residence time coal liquefaction process for producing reduced or low ash hydrocarbonaceous solid fuel from ash-containing crushed raw coal. The advantages of a higher benzene soluble feed¬ stock in hydrocracking are described in U.S. Patent No. 3,018,241 to E. Goriπ,
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www.wipo.int/pctdb/en/wo.jsp?IA=US1981000311&DISPLAY=DE...
www.wipo.int/pctdb/en/wo.jsp?IA=US1981000311&DISPLAY=DESC
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