A Feasibility Study Of Low Vacuum Cycle Water Heating In HNJN Power Plant

With the rapid development of cities,urban heating demand is increasing,but small power heating unit with the need of energy conservation and emissions reduction,increasingly strict environmental protection requirements,emission factors,such as to make face close or limit set limit to produces,HNJN power plant in this situation,actively explore the enterprise development route of more efficient and more reasonable,and actively coordinate with the local government,determine the most viable generating set technical transformation scheme,technological transformation is a main form of enterprise competitiveness.With the progress of industrial science and technology,more and more advanced research results have been applied in multiple link in enterprise production and advanced scientific production technology instead of behind the low efficiency of technology,the old equipment is gradually replaced by the advanced equipment,to improve productivity,save energy,improve the competitiveness of enterprises and social benefits and economic benefits.In order to make the technological transformation scientific and practical,and improve the rate of return on investment,it is necessary to conduct a comprehensive and thorough feasibility analysis and research on the technological transformation.HNJN power plant # 6 unit steam turbine model for N135-13.2/535/535,the unit is pure generators,soda for ultrahigh pressure reheat cycle form type,single shaft rotor,duplex double exhaust steam condensing steam turbine,the unit capacity runs,generating power rating of 135 MW(THA condition),up to a maximum of 146.925 MW overload operation,the rotor speed of 3000 r/min,the boiler superheated steam temperature of the heated to 535 degrees Celsius,superheated steam pressure is 13.24 Mpa,the operation of the turbine back pressure of 4.9 Kpa,In the whole process of power generation,the biggest energy loss of the generator set is to reduce the temperature of the circulating water of the unit,and the heat loss of the circulating water in the water tower.So enhancing the thermal efficiency is the most direct way is to reduce the heat loss of the circulating water cooling,HNJN power plants to take advantage of the quantity of heat of circulating water,vigorously research steam turbine low vacuum circulating water heating technology reform,so that both can raise the heat efficiency and can provide the heat to heat users,through the turbine motor,stator blade clapboard,steam turbine condenser,steam turbine shaft seal heater and the renovation of the heating station,in the winter the heat in the circulating water can be recycled,as heat source,Jacqueline Nottingham city heating for urban residents heating users,meet Jacqueline Nottingham city residents’ needs of heating in winter,Therefore,it can achieve the effect of waste heat reuse,energy saving and emission reduction of the unit.Through the operation of winter heating period,it is proved that the unit will greatly reduce the coal consumption of power generation during winter heating period.Because the steam turbine exhaust steam cooling source loss is basically utilized,the thermal efficiency of the steam turbine has been greatly improved,and the operating economy and safety of the unit have been optimized,meeting the national requirements for energy conservation and emission reduction,and making a significant contribution to the livelihood of JN urban heating problems.This topic through to the HNJN power plant unit features and economic benefit analysis of innovation,combined with Jacqueline Nottingham city heating steam source demand situation,the HNJN power plant # 6 generator set low vacuum circulating water heating renovation project of the feasibility study,through the whole process of tracking the original design scheme,equipment modification parameter adjustment scheme,construction plan,commissioning of equipment in the process of transformation to enumerate the problems and difficulties,and the processing result is given.At the same time,during the period of low vacuum heat supply unit,comprehensive and meticulous research and record the real-time running parameters,through the thermal performance test,determine the standards of operation condition,the thermal test data collection and analysis,through the calculation to determine the transformation investment recovery period,determine the best choice to adjust the equipment operation heating way,adjust instance reconstruction scheme and operation experience for the future load larger units double rotor swap low vacuum circulating water.