Coal desulfurization using alkali metal or alkaline earth compou

Details Coal desulfurization using alkali metal or alkaline earth compou Coal desulfurization using alkali metal or alkaline earth compou

1978-02-06

1979-05-01

Dees, Carl

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

201 17, C10L 910, C10B 5700

Patent

active

041521200

ABSTRACT:
Pyritic and organic sulfur is removed from pulverized coal by contacting the coal with an alkali metal or alkaline earth compound and thereafter using low amounts of electromagnetic energy to preferentially heat sulfur rich regions of the coal-alkali compound mixture. The alkali compound reacts with the sulfur within the coal to form water soluble, or separated compounds of sulfur which can easily be removed by washing the treated coal with water and/or to form compounds which do not convert into sulfur oxides during combustion of the coal.

REFERENCES:
patent: 3387941 (1968-06-01), Murphy et al.
patent: 3472622 (1969-10-01), Ridley
patent: 3993455 (1976-11-01), Reggel et al.
patent: 4054420 (1977-10-01), Longanbach
patent: 4076607 (1978-02-01), Zavitsanos et al.

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