Nature protection technologies

4.4. Complex of reconstructive, operation and technological measures at natural gas and fuel oil burning

Part 4. COMPLEX TECHNOLOGIES OF REDUCTION OF ENVIRONMENTAL POLLUTION FROM THERMAL POWER PLANTS

4.4. Complex of reconstructive, operation and technological measures at natural gas and fuel oil burning

4.4.1. Complex reconstruction of TGMP-314C boilers at CHPP-23 of JSC “Mosenergo” for ensuring their environmental soundness, reliability and efficiency

N.A. Zroychikov, I.V. Galas, E.A. Morozova, CHPP-23 of JSC “Mosenergo”, Moscow, Russia

M.G. Lyskov, MPEI, Moscow, Russia

 The article shows that an integrated approach to addressing environmental safety issues in combination with the measures for increasing the efficiency, reliability and resource-saving, provides a high efficiency at minimum cost.

Steam boilers of TGMP-314C type for T-250-240 units have been installed at CHPP-23 in 1970s…1980s of the last century. The main feature of the design of these gas-oil direct flow boilers of supercritical pressure was installation of four cyclone furnace extensions at the front and back walls of the furnace. As envisioned by MO CKTI designers, cyclone furnace extensions contribute to the intensification of the combustion process (fuel oil) due to intensive mixing with the air and presence of the carborundum coating on the inner surface of furnace extensions. However, experience of long-term operation has shown that the boilers of this modification have problems with reliability, and don’t meet the modern requirements for emissions of harmful substances into the environment.

Part 4. COMPLEX TECHNOLOGIES OF REDUCTION OF ENVIRONMENTAL POLLUTION FROM THERMAL POWER PLANTS

4.4. Complex reconstructive, operation and technological measures at gas and oil burning

4.4.2. Reduction of pollutant emissions from combustion of natural gas, fuel oil and water-oil emulsion in power boilers

V.I. Kormilitsyn, National Research University "MPEI", Moscow, Russia

The article presents the results of experimental-theoretical study of natural gas and fuel oil combustion in steam power boilers, impact of operation and constructive factors on emissions of pollutants discharged with flue gases and methods of NOx reduction in flue gases, their recovery to the molecular nitrogen.

In the process of fuel combustion in furnaces of steam boilers a variety of toxic substances are formed, which are then released into the atmosphere together with flue gases. Such substances in this case include, firstly, nitrogen and sulfur oxides, and, secondly, a number of products of incomplete combustion, in particular, polycyclic aromatic hydrocarbons (PAHC).