Zharinov I.V. 1
Borisenko A.S. 1
1 Dzerzhinsk polytechnical institute (branch) of the Nizhny Novgorod state technical university n.a. R.E. Alekseev
We have done the analysis of process of thermal decomposition of the waste sulfuric acid solutions of production of methylmethacrylate and the factors, having the greatest impact on technical and economic characteristics of this process. Influence of the content of oxygen in the oxygen-air blasting given to the combustion chamber and temperatures of blasting on fuel consumption as which natural gas (methane) is used is investigated. Influence of oxygen on process of recovery of sulfur trioxide to sulfur dioxide was thus considered: at the high residual content of oxygen extent of recovery of sulfur trioxide to sulfur dioxide decreases because of increase of partially pressure of oxygen and balance shift towards formation of sulfur trioxide. At the same time, at a lack of oxygen there is an incomplete combustion of fuel. The analysis of process of thermodestruction is carried out by drawing up the equation of material and thermal balance. It is shown that increase of the content of oxygen in blasting from 21 to 50% leads to decrease in a consumption of natural gas for 28%. The increase in temperature of blasting with 25 to 250°C allows to cut fuel consumption for 16% and to receive oven gas with the high content of dioxide o fsulfur without use of the blasting enriched with oxygen.