Proof of concept test and evaluation, Lasentec refining sensor

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Description

The Scanning Laser Microscopes (SLM) LAB-TEC 150 and PAR-TEC 200, were evaluated as instruments for monitoring fiber development during refining. The LAB-TEC 150 did not produce repeatable results which could be related to fiber development, as measured by Canadian Standard Freeness or hand sheet physical strength properties. The PAR-TEC 200 was found to correlate to strength development (Burst and Tensile Indices) during the first stages of laboratory Valley beating of bleached hardwood and softwood pulps. Preliminary testing of the PAR-TEC 200 in a pilot scale refining circuit was inconclusive. The influence of several process variables on instrument readings was investigated ... continued below

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Pages: (41 p)

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Anderson, J.E. July 1, 1991.

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Description

The Scanning Laser Microscopes (SLM) LAB-TEC 150 and PAR-TEC 200, were evaluated as instruments for monitoring fiber development during refining. The LAB-TEC 150 did not produce repeatable results which could be related to fiber development, as measured by Canadian Standard Freeness or hand sheet physical strength properties. The PAR-TEC 200 was found to correlate to strength development (Burst and Tensile Indices) during the first stages of laboratory Valley beating of bleached hardwood and softwood pulps. Preliminary testing of the PAR-TEC 200 in a pilot scale refining circuit was inconclusive. The influence of several process variables on instrument readings was investigated including flow rate, probe position and consistency. It is likely that a dual sensor system would be required in a commercial mill environment, to eliminate the effect of process variables. The next phase of the evaluation and development program will include two investigations: (1) A more scientific evaluation of which changes in fiber morphology the sensor is detecting during refining, and (2) a continuation of the in-line development; with a goal of eliminating process flow variables, and more accurately monitoring fiber development, by the use of two sensors, one before and after refining.

Physical Description

Pages: (41 p)

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OSTI; NTIS; GPO Dep.

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  • Other: DE92001743
  • Report No.: DOE/CE/40908-T1
  • Grant Number: FG02-89CE40908
  • DOI: 10.2172/5160118 | External Link
  • Office of Scientific & Technical Information Report Number: 5160118
  • Archival Resource Key: ark:/67531/metadc1052547

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 1, 1991

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

Description Last Updated

  • Jan. 29, 2018, 12:10 p.m.

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Anderson, J.E. Proof of concept test and evaluation, Lasentec refining sensor, report, July 1, 1991; United States. (digital.library.unt.edu/ark:/67531/metadc1052547/: accessed May 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.