REMOVAL OF CALCIUM BY DISSOLVED CO2 AND THE EFFECTS ON COAL LIQUEFACTION

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Communications Faculty of Sciences University Ankara Series B Chemistry and Chemical Engineering
Volume:45
REMOVAL OF CALCIUM BY DISSOLVED CO2 AND THE EFFECTS ON COAL LIQUEFACTION

REMOVAL OF CALCIUM BY DISSOLVED CO2 AND THE EFFECTS ON COAL LIQUEFACTION

Authors : E GÜL

Pages : 0-0

Doi:10.1501/Commub_0000000377

View : 33 | Download : 7

Publication Date : 1999-01-01

Article Type : Research Paper

Abstract :Calcium was removed from Tunçbilek and Soma-Merkez subbituminous coals and Seyitömer, Muğla-Yatağan and Bolu-Göynük lignites with dissolved COj technique. The effect of pretreatment on the liquefaction yield was investigated. With this technique 82.4 % removal of the ion exchangeable and 45.1 % removal of the nonexchangeable calcium were reached. Pretreating the coals with dissolved CO? had an adverse effect on Bolu-Göynük lignite and resulted in decreased liquid product yield while for the rest of the samples tested 8.9- 27.7 % increase were observed in tetraline soluble fractions.
Keywords : REMOVAL, CALCIUM, DISSOLVED

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