Fluidized bed desulfurization

High sulfur content carbonaceous material, such as coal is desulfurized by continuous fluidized suspension in a reactor with chlorine gas, inert dechlorinating gas and hydrogen gas. A source of chlorine gas, a source of inert gas and a source of hydrogen gas are connected to the bottom inlet through a manifold and a heater. A flow controler operates servos in a manner to continuously and sequentially suspend coal in the three gases. The sulfur content is reduced at least 50% by the treatment

Fluidized bed coal desulfurization

Laboratory scale experiments were conducted on two high volatile bituminous coals in a bench scale batch fluidized bed reactor. Chemical pretreatment and posttreatment of coals were tried as a means of enhancing desulfurization. Sequential chlorination and dechlorination cum hydrodesulfurization under modest conditions relative to the water slurry process were found to result in substantial sulfur reductions of about 80%. Sulfur forms as well as proximate and ultimate analyses of the processed coals are included. These studies indicate that a fluidized bed reactor process has considerable potential for being developed into a simple and economic process for coal desulfurization

A new low temperature process for coal desulfurization

Stirring powder coal in aqueous 0.6 N HCl solution containing Chloramine T (I) [127-65-1] (175:1 liquid-solid ratio and 39.5:1-coal ratio) removed 38.1% total S of coal in 3 h. The coal samples contained 2.5% total S (org. 89.5, sulfate 4.3, pyritic 6.2%). The use of I is considered for the removal of organic S compounds from coal