Abstract
In this work a coal-water suspension with containing of 30% (mass) coal was investigated. Obtained coal-water suspension was stabilized by sodium dodecyl sulphate (SDS) and oxyethylated alkyl phenol (ОP-10). A wettability isotherm of coal surface by surfactants, optimal regime of coal dispersion, adsorption isotherm, viscosity, fluidity and heat of combustion of 30% (mass) coal-water suspension were determined. Obtained results allow to recommend 30% coal-water suspension stabilized by surfactants as a fuel.
Highlights
The stable tendency of a price growth of oil products leads to an intensive research of a new technology of a coal refining because the explored coal reserves are 20 times more than oil reserves
It is known that the violation of stability, sedimentation of particles and the lamination of the dispersed system are due to the differences in specific gravity of the dispersed phase and a liquid dispersion medium [6]
The obtained coal-water suspension was stabilized by sodium dodecyl sulphate (SDS) and oxyethylated alkyl phenol (ОP-10)
Summary
The stable tendency of a price growth of oil products leads to an intensive research of a new technology of a coal refining because the explored coal reserves are 20 times more than oil reserves. Coal-water suspensions are paid attention as a real alternative to liquid fuels from oil in the countries such as Japan, People’s Republic of China, Italy, USA, Sweden and Russian Federation This is connected with a high scientific and technical potential gathered by these countries in the area of production, transportation, burning of coal-water fuels in boiler, cogeneration plants, combined-cycle plants and gas turbines [1,2,3,4,5,6,7,8]. For the preparation of coal-water suspensions from a theoretical point of view is advisable to use the fractions with the same (proportional) size of coal particles [9,10,11,12] Another important way to improve the stability of coal-water suspension (CWS) is the addition of stabilizers (polymers and surfactants) that reduce the coagulation (coalescence) of coal particles and their sedimentation [13,14,15,16,17]. It is known that the coal surface is hydrophobic so surfactants with different nature have higher affinity to the coal surface
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
