PRODUCTION OF COAL-WATER FUEL FROM COALS OF THE MEZHEGEY DEPOSIT IN THE REPUBLIC OF TYVA

The use of coal from the Mezhegey deposit (the Republic of Tyva) is promising for the production of thermal energy. However, it is necessary to consider the peculiarities of the technological properties of coal associated with its increased sintering characteristics. These features with the layered coal combustion technology lead to excessive consumption of fuel due to its underburning and a high content of harmful substances in the flue gases. Kyzyl has already been included in the Federal Project “Clean Air”, which indicates the relevance of the present investigation and the necessity of introducing new methods into the usage of this energy resource. To reduce emissions and to enhance the efficiency of coal use in power engineering, it is reasonable to introduce the technology of obtaining and burning coal-water fuel (CWF) taking into account the specific features of coal. The possibility of obtaining and using environmentally friendly coal-water fuel from the coals of the Mezhegey deposit located in the Republic of Tyva is established. The technical characteristics of coal were analysed, a pilot batch of CWF was obtained, and the combustion characteristics of this fuel in a boiler plant were determined. The preparation and combustion of the pilot batch of CWF was carried out in the laboratory installation at the Siberian State Industrial University (Novokuznetsk). It has been shown that the concentrations of hazardous substances in flue gases are substantially lower than the maximum permissible values. The development of this technology involving coal from the Mezhegey deposit will make it possible to reduce fuel consumption at heat generating installations and minimize the negative environmental effect.