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Study on the rheology of coal–oil slurries during heating at high pressure
- Source :
- International Journal of Coal Science & Technology, Vol 4, Iss 3, Pp 274-280 (2017)
- Publication Year :
- 2017
- Publisher :
- Springer Science and Business Media LLC, 2017.
-
Abstract
- Using the self-developed viscosity measuring device, the viscosity variations of coal–oil slurries with temperature increasing during coal–oil co-processing were studied. The results show that the viscosity of coal–oil slurries prepared by different kinds of oil varies differently during heating. The viscosity of the coal–oil slurry prepared by the catalytic cracking slurry (FCC) generally decreases during heating. However, the viscosity of the coal–oil slurry prepared by the high-temperature coal tar (CT) will peak at 338 °C during heating. The differences in viscosity variations of coal–oil slurries are analyzed. In addition to the temperature, the properties of the solvents and coal are the main influencing factors. Because the used coal contains a large number of polar functional groups, the swelling behavior of the coal in polar solvent (CT) is stronger than that in non-polar solvent (FCC). The swelling effect of the coal can result in the appearance of the viscosity peak. Therefore, before 100 °C, the solvent molecules entering into the coal pores is the main influencing factor of coal–oil slurries viscosity variations. After 100 °C, the increasing of particle size of coal particles is the main influencing factor of coal–oil slurries viscosity variations.
- Subjects :
- lcsh:TN1-997
020209 energy
Relative viscosity
Energy Engineering and Power Technology
Mineralogy
02 engineering and technology
010502 geochemistry & geophysics
Fluid catalytic cracking
complex mixtures
01 natural sciences
Viscosity
Rheology
otorhinolaryngologic diseases
0202 electrical engineering, electronic engineering, information engineering
medicine
Coal–oil slurry
Coal
Coal tar
Swelling
lcsh:Mining engineering. Metallurgy
0105 earth and related environmental sciences
business.industry
Chemistry
technology, industry, and agriculture
High temperature and pressure
respiratory system
Geotechnical Engineering and Engineering Geology
respiratory tract diseases
Chemical engineering
Slurry
Particle size
business
medicine.drug
Subjects
Details
- ISSN :
- 21987823 and 20958293
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- International Journal of Coal Science & Technology
- Accession number :
- edsair.doi.dedup.....162385dc55108a3f06a1de1d45e967d1