The influence of yield, refining and ingoing solids on the impulse drying performance of a ceramic coated press roll. Project 3470, report 4: a progress report to member companies of the Institute of Paper Science and Technology

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The influence of yield, refining and ingoing solids on the impulse drying performance of a ceramic coated press roll. Project 3470, report 4: a progress report to member companies of the Institute of Paper Science and Technology
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  Jr l? Ag @ iulo c@c@ THE INFLUENCE OF YIELD, REFINING ANDINGOING SOLIDS ON THE IMPULSE DRYINGPERFORMANCE OF A CERAMIC COATED PRESS ROLL Project 3470REPORT FOUR to MEMBER COMPANIES OF THE INSTITUTE OF PAPER SCIENCE AND TECHNOLOGY October 1991 Atlanta, Georgia Nahm~B~l  NOTICE & DISCLAIMER The InstituteofPaperScience and Technology (IPST) has provided a high standardof professional service and has put forth its best efforts within the time andfunds available for this project.The information and conclusions are advisory and are intended onlyfor internaluseby any company who may receive this report. Each companymust decidefor itself the best approach to solving any problems it may have andhow, or whether, this reportedinformationshould be considered in its approach. IPST does not recommend particular products, procedures, materials, or service. These are included only in the interest of completeness within a laboratory context and budgetary constraint. Actual products, procedures, materials, and services usedmay differ and are peculiar to the operations of each company. In no event shall IPST or its employees and agents have any obligationor liability for damages including, but not limited to,consequential damages arising out of or in connectionwith any company's use of or inability touse the reported information.IPST provides no warranty or guaranty of results. .  THE INSTITUTE OF PAPER SCIENCE AND TECHNOLOGY Atlanta, Georgia THE INFLUENCE OF YIELD, REFINING AND INGOING SOLIDS ON THE IMPULSEDRYING PERFORMANCE OF A CERAMICCOATED PRESS ROLL Project 3470 Report 4 By David I. Orloff and Jeffrey D. Lindsay To MEMBER COMPANIES OF THE INSTITUTE OF PAPER SCIENCEAND TECHNOLOGY October 1991  TABLE OF CONTENTS SUMMARY................................................................1 LITERATURE REVIEW......................................................1Impulse Drying and Delamination .................................. 1 The Relevance of Permeability .................................... 3DarcianPermeability ....................................... 3Permeability In Impulse Drying.............................3CharacterizingPremeability In Compressible Media..........4 EXPERIMENTAL METHODS ................................................... 6Pilot Impulse Drying ApparatusAnd Methods....................... 6Permeability Measurements ........................................ 9EXPERIMENTAL RESULTS .................................................. 11 CONCLUSIONS ........................................................... 19 REFERENCES ............................................................ 20 APPENDIX:TABLES OF EXPERIMENTALDATA ................................. 21 ACKNOWLEDGMENTS....................................................... 24  BASIC UNITS AND CONVERSIONS Kilograms (kg) = 2.20462 pound mass (Ibm) Ton = 2000 Ibm. Length TimeVolume Force PressureTemperatureEnergy Power Meters (m) = 3.2808 feet (ft). Second (s) = 1000 milliseconds (ms).Cubic meters (m3) = 106 milliliters (mL).Newton (N) = 0.22481 pound force (lbf). Pascal(Pa) = 0.000145 poundsper squareinch(psi). MegaPascal (MPa) = 1 x 10+6 Pascal.DegreeCelsius (°C) DegreeFahrenheit (°F) = °C x (9/5) + 32. Joule (J) = 9.486 x 10-4 British Thermal Units (Btu). Quad = 1x 10+15Btu. Watt (W) = 1 J/s Watt (W) = 9.486 x 10-4 (Btu/s). Mass
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