Process for the preparation of fuel pellets
First Claim
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1. A process for the preparation of fuel pellets comprised of, in whole or in part, at least one modified cellulosic material which process comprises the steps of:
- (a) contacting a communated cellulosic material with at least one enzyme under conditions whereby said cellulosic material is modified to the extent that it is softer and more pliable and less mechanical energy is needed to form the material into said pellets,(b) partially drying and communating said modified material,(c) pelletizing said modified material and(d) drying the resulting pellets to further reduce the moisture content.
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Abstract
A simple and efficient process is provided for the preparation of fuel pellets comprised of, in whole or in part, a modified cellulosic material.
By contacting a cellulosic material with certain enzymes, such as cellulase, the cellulose structure is modified so that the material flows more easily and therefore less energy need be expended in formation of the pellets. Hence, higher production is obtained by increased input and output to and from the pellet mill. Moreover, the pelletizing die itself is subjected to less abrasion and hence has a longer life.
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21 Claims
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1. A process for the preparation of fuel pellets comprised of, in whole or in part, at least one modified cellulosic material which process comprises the steps of:
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(a) contacting a communated cellulosic material with at least one enzyme under conditions whereby said cellulosic material is modified to the extent that it is softer and more pliable and less mechanical energy is needed to form the material into said pellets, (b) partially drying and communating said modified material, (c) pelletizing said modified material and (d) drying the resulting pellets to further reduce the moisture content. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A process for the preparation of fuel pellets comprised of in whole or in part, at least one modified cellulosic material which process comprises the steps of:
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(a) spraying a communated cellulosic material with an aqueous solution containing from about 0.05 to about 0.1 weight percent of cellulase, (b) partially drying and communating the sprayed cellulosic material, (c) pelletizing the cellulosic material and (d) drying the resulting pellets to further reduce the moisture content. - View Dependent Claims (21)
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Specification