INFLUENCE OF STABILIZATION TECHNOLOGIES ON RHEOLOGICAL PROPERTIES AND STABILITY OF COAL-WATER SUSPENSIONS

K.V. Makarova; D.P. Savitskiy; A.S. Makarov; D.Yu. Sadovskiy

K.V. Makarova Institute of Colloid and Water Chemistry of National Academy of Sciences of Ukraine, Kyiv
D.P. Savitskiy Institute of Colloid and Water Chemistry of National Academy of Sciences of Ukraine, Kyiv
A.S. Makarov Institute of Colloid and Water Chemistry of National Academy of Sciences of Ukraine, Kyiv
D.Yu. Sadovskiy Institute of Colloid and Water Chemistry of National Academy of Sciences of Ukraine, Kyiv

Keywords: coal-water suspensions, structure formation, stability, polymer, rheological properties

Abstract

During production of water-coal suspensions based on low-ash subbituminous coal, inevitably there is a problem of stability due to the deposition of carbon particles in a dispersion medium, which can be solved by the adding of water-soluble polymers. When the water- soluble polymers are using as stabilizers the great importance have the concentration factor and the technology of the stabilizer insertion. Based on the research was studied the influence of water-soluble polymer concentration and a stabilizing technology on rheological properties and stability of coal-water slurries. The optimal polymer concentration at which the system have the lowest viscosity and the highest stability was found. Also discussed stabilization techniques thanks to which it is possible to increase the stability of coal-water slurries. Bibl. 7, Fig. 2, Tab. 1.

Author Biographies

K.V. Makarova, Institute of Colloid and Water Chemistry of National Academy of Sciences of Ukraine, Kyiv

Candidate of Chemistry Sciences

D.P. Savitskiy, Institute of Colloid and Water Chemistry of National Academy of Sciences of Ukraine, Kyiv

Candidate of Chemistry Sciences

A.S. Makarov, Institute of Colloid and Water Chemistry of National Academy of Sciences of Ukraine, Kyiv

Doctor of Technical Sciences

References

Deljagin G.N., Kagan Ja.M., Kondrat’ev A.S. Zhidkoe toplivo na osnove ugol’nyh suspenzij : Vozmozhnosti i perspektivy ispol’zovanija, Rossijskij himicheskij zhurnal, 1994, (3), pp. 22–27. (Rus.)

Hodakov G.S. Vodougol’nye suspenzii v jenergetike, Teplojenergetika, 2007, (1), pp. 35–45. (Rus.)

Ur’ev N.B. Vysokokoncentrirovannye dispersnye sistemy, Moscow : Himija, 1980, 320 p. (Rus.)

Makarov A.S., Degtjarenko T.D., Olofіnskіj E.P. Fіziko-hіmіchnі osnovi oderzhannja visokoncentrovanih vodovugіl’nih suspenzіj, Visnyk Akademii’ nauk Ukraynskoj radjans’koi’ socialistychnoi’ respubliky, 1989, (2), pp. 66–75. (Ukr.)

Makarova E.V., Makarov A.S., Savickij D.P. Vlijanie vodorastvorimyh polimerov na stabil’nost’ vodnyh suspenzij nizkozol’nogo uglja, Voprosy himii i himicheskoj tehnologii, 2015, 1, pp. 26–29. (Rus.)

Baran A.A. Stabilizacija dispersnyh sistem vodorastvorimymi polimerami, Uspehi himii, 1985, 54 (7), pp. 1100–1126. (Rus.)

Nepper D. Stabilizacija kolloidnyh dispersij polimerami, Moscow : Mir, 1986, 415 p. (Rus.)

Received April 18, 2016