Abstract
Analysis of the perspectives of the coal fuel for thermal power plants is carried out. The necessity of the experimental study for temperature measurement in the boiler furnace. The results of the experimental study are presented: temperature change over time at the burner outlet for different constant pressure value of the backlighting gas, dependence of the temperature at the burner outlet from the backlighting gas pressure for constant concentration value of pulverized coal in coal-air mixture, dependence of the temperature at the burner outlet from the concentration of pulverized coal in coal-air mixture for constant value of the backlighting gas pressure, temperature measurements for constant backlighting gas pressure value, constant value of the concentration of pulverized coal in coal-air mixture when plasmatron is switched and operates for some time range. The results of the study could be applied to the solid fuel treatment for different thermal units.
Highlights
IntroductionGeological reserves of low-grade coal have been explored for many years ahead, while its production will be preserved, and due to the rapid depletion of oil and gas reserves, will increase in the near future
Geological reserves of low-grade coal have been explored for many years ahead, while its production will be preserved, and due to the rapid depletion of oil and gas reserves, will increase in the near future.At present, about 40 boiler units of different capacities of domestic thermal power plants (TPP) operate on a low-grade coal of the anthracite dust coal type (ADC)
Combustion of low-grade coal of the anthracite type at TPP is carried out in a coal dust flame with fuel backlighting by oil and natural gas
Summary
Geological reserves of low-grade coal have been explored for many years ahead, while its production will be preserved, and due to the rapid depletion of oil and gas reserves, will increase in the near future. About 40 boiler units of different capacities of domestic thermal power plants (TPP) operate on a low-grade coal of the anthracite dust coal type (ADC). Combustion of low-grade coal of the anthracite type at TPP is carried out in a coal dust flame with fuel backlighting by oil and natural gas. In this case, there is a significant mechanical underburning and the presence of harmful emissions into the atmosphere take place. The solution of the problem of highly efficient combustion of low-grade coal with significant ash content in TPP boilers is provided by the new technology given in this paper. - reduction of backlighting fuel consumption; - reduction of coal mechanical underburning; - reduction of harmful emissions into the atmosphere
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