Process for upgrading coal

Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Using molten additive – e.g. – heat carrier – etc.

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

44621, 44622, 44624, 44627, 44608, 44620, 208405, 423DIG12, 201 17, C10G 100

Patent

active

050857649

ABSTRACT:
In a process for reducing the sulfur and ash contents of coal, coal is sequentially contacted with fused alkali metal caustic, wash water, and acid. Contacting the coal with the caustic produces water-soluble compounds. Sufficient wash water is used to reduce the temperature of the caustic treated coal and dissolve the bulk of the water-soluble compounds before the water-soluble compounds convert to water-insoluble compounds that precipitate on the caustic-treated coal. Caustic removed from the coal by the water is recovered as anhydrous caustic for again contacting coal.

REFERENCES:
patent: 506051 (1893-10-01), Langville
patent: 1703192 (1929-02-01), Hampton
patent: 1938672 (1933-12-01), Ruthruff
patent: 2034818 (1930-03-01), Loughrey
patent: 2162221 (1939-06-01), Kasehagen et al.
patent: 2316005 (1943-04-01), Lachle
patent: 2609331 (1952-09-01), Cheney
patent: 2694035 (1954-11-01), Smith et al.
patent: 2768935 (1956-10-01), Watkins
patent: 2878163 (1956-08-01), Hutchings
patent: 2902430 (1959-09-01), Kimberlin, Jr. et al.
patent: 2940919 (1960-06-01), Hemminger
patent: 2950245 (1960-08-01), Thomsen
patent: 2957818 (1960-10-01), Fischer
patent: 2980600 (1961-04-01), Kelley
patent: 3075913 (1963-01-01), Scheffel et al.
patent: 3108059 (1963-10-01), Greenwald
patent: 3166483 (1965-01-01), Masciantonio
patent: 3296117 (1967-01-01), Ross et al.
patent: 3393978 (1968-07-01), Murphy et al.
patent: 3407003 (1966-10-01), Durie
patent: 3501201 (1970-03-01), Closmann et al.
patent: 3510168 (1970-05-01), Camp
patent: 3522168 (1970-07-01), Bichard et al.
patent: 3542666 (1970-11-01), Simpson
patent: 3556982 (1971-01-01), Kaminsky et al.
patent: 3572838 (1971-03-01), Templeton
patent: 3644194 (1972-02-01), Keely, Deceased et al.
patent: 3708270 (1973-01-01), Birk et al.
patent: 3739851 (1973-06-01), Beard
patent: 3753594 (1973-08-01), Beard
patent: 3759328 (1973-09-01), Ueber et al.
patent: 3759574 (1973-09-01), Beard
patent: 3779601 (1973-12-01), Beard
patent: 3779722 (1973-12-01), Tatum
patent: 3788978 (1974-01-01), Bearden, Jr. et al.
patent: 3846276 (1974-11-01), Walker
patent: 3909213 (1975-09-01), Sanders
patent: 3919118 (1975-11-01), Robinson et al.
patent: 3934935 (1976-01-01), Lambly et al.
patent: 3951457 (1976-04-01), Redford
patent: 3960513 (1976-06-01), Agarwal et al.
patent: 3966582 (1976-06-01), Cramer
patent: 3967853 (1976-07-01), Closmann et al.
patent: 3970434 (1970-07-01), Gasior et al.
patent: 3993455 (1976-11-01), Reggel et al.
patent: 4003823 (1977-01-01), Baird, Jr. et al.
patent: 4026359 (1977-05-01), Closmann
patent: 4032193 (1977-06-01), Drinkard et al.
patent: 4055400 (1977-10-01), Stambaugh et al.
patent: 4087514 (1978-05-01), Robinson et al.
patent: 4092236 (1978-05-01), Heredy
patent: 4108760 (1978-08-01), Williams et al.
patent: 4118200 (1978-10-01), Kruesi
patent: 4120776 (1978-10-01), Miller et al.
patent: 4130474 (1978-12-01), Anthony
patent: 4132448 (1979-01-01), Davis
patent: 4134737 (1979-01-01), Yang
patent: 4152120 (1979-05-01), Zavitsanos et al.
patent: 4158638 (1979-06-01), Tsai
patent: 4167397 (1979-09-01), Grant
patent: 4168148 (1979-09-01), Anthony et al.
patent: 4174953 (1979-11-01), Sun et al.
patent: 4188191 (1980-02-01), Longanbach et al.
patent: 4191425 (1980-06-01), Davis
patent: 4213765 (1980-07-01), Wilson
patent: 4226601 (1980-10-01), Smith
patent: 4260471 (1981-04-01), Miller
patent: 4545891 (1985-10-01), Meyers et al.
Coal Desulfurization, R. A. Meyers, 1977, "Pyritic Sulfur Removal Process Caustic Leaching," pp. 201-209, 230-233.
Coal Desulfurization, R. A. Meyers, 1977, pp. 25-54, 230-234.
"Conversion of Coal To Simple Compounds", Parker et al.
Industrial & Engr. Chem., vol. 47, No. 6, Aug., 1955, pp. 1586-1592.
"The Effect of Molten Caustic on Pyritic Sulfur in Bituminous Coal", Masciantonio, pp. 269-275.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process for upgrading coal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for upgrading coal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for upgrading coal will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-346061

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.