Carbonation as a binding mechanism for coal/calcium hydroxide pellets. Technical report, September 1, 1991--November 30, 1991 Page: 1 of 8
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DO/po/C 1
1 DOE/PC/91334--T33
DE92 007859
TECHNICAL REPORT
September 1, 1991 through November 30, 1991
CARBONATION AS A BINDING MECHANISM FOR COAL/CALCIUM HYDROXIDE PELLETS
Principle Investigator: David M. Rapp, Illinois State Geological Survey (ISGS)
615 E. Peabody Drive
Champaign, IL 61820
(217) 244-4991
Other Investigators:
Henry P. Ehrlinger 217 244-4989 Richard L. Berger (217) 333-6961
Keith C. Hackley 217 244-2192 University of Illinois (UI-UC)
John M. Lytle 217 244-8389 Civil Engineering Department
David L. Moran 217 244-4985 Champaign, IL 61820
615 E. Peabody Drive
Champaign, IL 61820
Gary Schanche (217) 398-5505 Poo Chow (217) 333-6670
Construction Engineering Research Lab University of Illinois
Champaign, IL 61820 Department of Forestry
Champaign, IL 61820
Richard Strickland (205) 386-2542
Tennessee Valley Authority
Muscle Shoals, AL 35660
Project Monitor: Dr. Dan Banerjee
ABSTRACT
Current coal mining and processing procedures produce a significant
quanity of fine coal that is difficult to handle and transport. The
objective of this work is to determine if these fines can be economically
pelletized with calcium hydroxide, a sulfur capturing sorbent, to produce
a clean-burning fuel for fluidized-bed combustors or stoker boilers.
To harden these pellets, carbonation, which is the reaction of calcium
hydroxide with carbon dioxide to produce a cementitious matrix of calcium
carbonate, is being investigated. Previous research indicated that
carbonation significantly improved compressive strength, impact and
attrition resistance and "weatherproofed" pellets formed with sufficient
calcium hydroxide (5 to 10% for minus 28 mesh coal fines).
This research is a two-year effort where the first year will focus on the
production of a compliance stoker fuel from relatively low sulfur (1.46%)
minus 28 mesh coal fines. the second year will seek to develop a general
approach to the production of carbonated coal/calcium hydroxide pellets
for fines ranging from minus 28 to minus 200 mesh.
During this quarter, a fine coal sample (-28 mesh) was collected from a
southern-Illinois coal-cleaning plant. Also, an undergraduate student was
hired and trained in laboratory procedures. Test work is underway, but
results are too preliminary for presentation.
This project is funded by the U. S. Department of Energy (PETC) and by the
Illinois Department of Energy and Natural Resources as part of their cost-
shared program. DISTRIBUTIlN OF TH[S DOCUMENT IS IINLIMIT4t-
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Rapp, D. M. Carbonation as a binding mechanism for coal/calcium hydroxide pellets. Technical report, September 1, 1991--November 30, 1991, report, December 31, 1991; Champaign, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1273549/m1/1/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.