Application Study on Low Vacuum Circulating Water Heat Supply of a 50 MW Turbine

Abstract:

This topic mainly research the high back pressure heat supply technology of steam turbine generator unit and the correlation analysis of turbine under high back pressure operating condition. High back pressure heat supply is an energy saving technology developed in order to meet the requirements of energy saving and environmental protection. This technology can not only reduce the cold end losses to improve the thermal efficiency of power plant, but also decrease the energy loss and pollution emissions because it take the place of traditional heating boiler. High back pressure heat supply of steam turbine is to increase the quantity of air inlet and outlet as well as exhaust temperature through improving turbine back pressure. For condensing steam turbine unit of 50 MW studied in this article, back pressure of which rise to 0.032MPa from 0.0046MPa, and the exhaust temperature will increase to 70 °C respectively. Through the calculation of rated condition and variable condition, we can obtain the impact to the unit due to the change of back pressure, and for unit of 50 MW can reduce 30876.9 tons of standard coal consumption in a heating period. It can also decrease the emission of carbon dioxide, sulfur dioxide, smoke and ashes, which effect of energy saving and emission reducing is very obvious.

• Periodical: Advanced Materials Research (Volumes 953-954)
• Pages: 896-899
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.953-954.896
• Online since: June 2014
• Authors: Shan Tu*, Qi Zhou, Jian Liu Jian, Cong Qiang Ding, Shu Ming Wu
• Keywords: Cold-End System, Energy Conservation, Steam Turbine Low Vacuum Circulating Water Heat Supply, Thermo-Economics

References

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