Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 3, January 1, 1995--March 31, 1995

Kihm, K D

doi:10.2172/94671

Title: Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 3, January 1, 1995--March 31, 1995

Full Record
Other Related Research

Abstract

Microscopic behavior of the bubble pressure has been investigated for selected aqueous solutions. The Kruss dynamic tensiometer has been modified so that the analog pressure readings of the instrument can be digitized through a computer interface for post data processing. Measurements of peak pressure, minimum pressure, surfactant diffusion time, and dead time are presented for DDBS-soft and 1840{minus}x aqueous solutions of surfactant concentrations of up to 1.0%. The implementation of the A-to-D data conversion also permits to examine the accuracy of the dynamic surface tension measurement which is based on the maximum bubble pressure principle.

Authors:: Kihm, K D

Publication Date:: Tue Aug 01 00:00:00 EDT 1995

Research Org.:: Texas A and M Univ., College Station, TX (United States). Dept. of Mechanical Engineering

Sponsoring Org.:: USDOE, Washington, DC (United States)

OSTI Identifier:: 94671

Report Number(s):: DOE/PC/94120-T3
ON: DE95015532

DOE Contract Number:: FG22-94PC94120

Resource Type:: Technical Report

Resource Relation:: Other Information: PBD: [1995]

Country of Publication:: United States

Language:: English

Subject:: 01 COAL, LIGNITE, AND PEAT; FUEL SLURRIES; SURFACE TENSION; RHEOLOGY; COAL; WATER; MIXTURES; SURFACTANTS; EXPERIMENTAL DATA; PROGRESS REPORT

Citation Formats


                    Kihm, K D. Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 3, January 1, 1995--March 31, 1995.  United States: N. p., 1995. 
        Web.  doi:10.2172/94671.

Copy to clipboard


                    Kihm, K D. Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 3, January 1, 1995--March 31, 1995.  United States.  https://doi.org/10.2172/94671

Copy to clipboard


                    Kihm, K D. 1995.  
        "Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 3, January 1, 1995--March 31, 1995".  United States.  https://doi.org/10.2172/94671.  https://www.osti.gov/servlets/purl/94671.

Copy to clipboard


                    
@article{osti_94671,

  title        = {Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 3, January 1, 1995--March 31, 1995},

  author       = {Kihm, K D},

  abstractNote = {Microscopic behavior of the bubble pressure has been investigated for selected aqueous solutions. The Kruss dynamic tensiometer has been modified so that the analog pressure readings of the instrument can be digitized through a computer interface for post data processing. Measurements of peak pressure, minimum pressure, surfactant diffusion time, and dead time are presented for DDBS-soft and 1840{minus}x aqueous solutions of surfactant concentrations of up to 1.0%. The implementation of the A-to-D data conversion also permits to examine the accuracy of the dynamic surface tension measurement which is based on the maximum bubble pressure principle.},

  doi          = {10.2172/94671},

  url          = {https://www.osti.gov/biblio/94671},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Aug 01 00:00:00 EDT 1995},

  month        = {Tue Aug 01 00:00:00 EDT 1995}

}

Copy to clipboard

Technical Report:

View Technical Report (0.64 MB)

https://doi.org/10.2172/94671

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report No. 4, April 1, 1995--June 30, 1995

Technical Report Kihm, K; Deignan, P

Experiments were conducted to investigate the effect of particle size on coal-water slurry (CWS) surface tension properties. Two different coal powder samples of different size ranges were obtained through sieving of coal from the Upper Elkhorn Seam. The surfactant (anionic DDBS-soft, dodecylbenzene sulfonic acid) concentration varied from 0 to 1.0% in weight while the coal loading remained at 40% in weight for all the cases. A du Nouy ring tensiometer and a maximum bubble pressure tensiometer measured the static and dynamic surface tensions, respectively. The results show that both static and dynamic surface tensions tend to increase with decreasing coalmore »« less
https://doi.org/10.2172/162155

Full Text Available
Investigation of the effect of coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels. Quarterly report number 2

Technical Report Kihm, K

Experiments were conducted to investigate the effect of particle size on CWS surface tension properties. Two different coal powder samples of different size ranges were obtained from a single source of coal from the Upper Elkhorn Seam through sieving. Anionic surfactants showed lowest CWS dynamic surface tension values when compared with nonionic or cationic surfactants in the previous study. Two anionic surfactants, DDBS-soft and 1840-x, were selected for this test. The surfactant concentration varied from 0 to 1.0% in weight while the coal loading remained at 40% for all the cases. A Du-Nouy ring tensiometer and a maximum bubble pressuremore »« less
Investigation of the efect of the coal particle sizes on the interfacial and rheological properties of coal-water slurry fuels

Conference Kihm, K; Deignan, P

Experiments were conducted to investigate the effect of particle size on coal-water slurry (CWS) surface tension properties. Two different coal powder samples of different size ranges were obtained through sieving of coal from the Upper Elkhorn Seam. The surfactant (anionic DDBS-soft, dodecylbenzene sulfonic acid) concentration varied from 0 to 1.0% in weight while the coal loading remained at 40% in weight for all the cases. A du Nouy ring tensiometer and a maximum bubble pressure tensiometer measured the static and dynamic surface tensions, respectively, The results show that both static and dynamic surface tensions tend to increase with decreasing coalmore »« less
Full Text Available
Interfacial properties of coal-water slurry fuels - on the effect of coal particle sizes

Conference Kihm, K; Deignan, P

Experiments were conducted to investigate the effect of particle size on coal-water slurry (CWS) surface tension properties. Two different coal powder samples of different size ranges were obtained through sieving of coal from the Upper Elkhorn Seam. Two anionic surfactants, DDBS-soft (dodecylbenzene sulfonic acid) and 1840-x (sodium salt of sulfonated fatty acid), were selected for this test. The surfactant concentration varied from 0 to 1.0% in weight while the coal loading remained at 40% in weight for all the cases. A du Nouy ring tensiometer and a maximum bubble pressure tensiometer measured the static and dynamic surface tensions, respectively. Themore »« less
Development and use of an apparatus to measure the dynamic surface properties of coal-water slurry fuels for applications to atomization characteristics. Final report, September 1, 1992--December 31, 1993

Technical Report Kihm, K

Experiments were conducted to measure the dynamic surface tension of coal-water slurry (CWS) mixtures containing various types of surfactants and with varied coal loadings. The dynamic properties will affect CWS fuel atomization, which constitutes highly dynamic processes. A maximum air bubble pressure technique measured the dynamic surface tension. The dynamic surface tension, which can be much higher than the corresponding static surface tension, was measured for the CWS made from the coal mined from the Upper Elkhorn seam in Virginia. The coal had 50 {mu}m volume mean diameter (VMD). Five surfactants were selected for the study: one nonionic Alkylphenol Ethoxylatemore »« less
https://doi.org/10.2172/10141737

Full Text Available

Similar Records