EXPERIMENTAL STUDIES OF COMBUSTION PROCESSES OF STEAM-DIESEL MIXTURE IN BOILERS OF MOBILE STEAM GENERATOR INSTALLATIONS
Keywords:mobile vapor generator unit, vapor-diesel mixture, amount of heat, fuel consumption.
The article aims to reduce fuel consumption in boilers of mobile vapor generating units of the oil and gas industry due to using vapor-diesel mixtures as fuel which are a cheaper and more environmentally friendly alternative to diesel fuel. Theoretical studies of physicochemical processes during the combustion of vapor-diesel mixture in boilers of mobile vapor generators were carried out. Assumptions of the mathematical model of combustion of vapor-diesel mixture in boilers of mobile vapor generators were formulated. The mathematical model of vapor-diesel mixture combustion in boilers of mobile vapor generators was created. The calculations showed that the thermal effect of burning a vapor-diesel mixture exceeds the effect of burning the same amount of diesel fuel. The use of vapor-diesel mixtures allows for to reduction of the contamination of heating surfaces in boilers with soot. The combustion speed of the vapor-diesel mixture is greater than that of commercial diesel fuel, and the indicator pressure during the combustion of the vapor-diesel mixture increases. Calculations of diesel fuel consumption by PPUA vapor generator units at different modes were carried out. To confirm theoretical studies in industrial conditions, experimental studies of the main patterns of changes in the fuel-economical characteristics of mobile vapor generator units PPUA-1600/100 and PPUA-1200/100 were carried out. Fuel consumption was determined per hour of operation of vapor generating units at constant conditions of pressure P, temperature t and degree of dryness of saturated steam x. The conducted experimental studies showed that the transfer of boilers of mobile vapor generators to work using products of a vapor-diesel mixture was accompanied by a decrease in fuel consump- tion during the operation of boilers, and therefore is technically justified. The use of pre-diesel mixtures made it possible to increase the thermal efficiency of boilers of mobile vapor generators for various modes and reduce diesel fuel consumption by 8-14 %.
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