Features of Shale Gas in Rotary Kilns Building Materials Industry

Abstract

The possibility of shale gas usage in existing kilns of building materials industry is analyzed. The questions considering determination of thermal performance conditions of kilns for burning cement using nature and shale are studied. For a more complete modeling a mathematical model, compared with the known, taking into account such additional factors as the temperature of the exhaust gases and the conditions refractory lining wear during operation was applied. Conclusions are drawn about the possibility of structural elements furnace using shale gas: 1) significantly increases the amount of fuel requiring the installation of two or even three burners in the furnace unit; 2) low gas flow in the furnace is increased to ~ 300 °C requiring the selection of an appropriate type of refractory; 3) the temperature of the furnace body is increased to 35 °C–45 °C; 4) using the shale gas reduces the amount of secondary air, so it does not display significant impact on reducing fuel consumption. Hence there is the need for re-adjustment of the refrigerator, fans and ductwork used in the flowsheet. Thus, the direct application of shale requires replacement devices or nodes in the design of machines. Another option is to create a combined gas with a defined chemical composition by mixing oil shale and natural gas.