Research And Performance Analysis Of High Back Pressure Heating Transformation Plan For 225MW Unit

Energy saving and consumption reduction is the basic state policy of sustainable development in today's society.Cogeneration technology can effectively promote the development of generating units of large scale and centralization,in turn,solve the contradiction in the current our country small and medium-sized cities heating,heat dispersion and small units,high energy consumption of the heating problem such as severe pollution.Let's take the transformation project of 225 MW power units of high pressed heating supply in Jining for example.Based on the original heating supply methods,we put forward three different transformation projects of supplying methods and we compared them,analyze them and we established a more suitable plan.Through this plan,we introduce the main and auxiliary transformation equipments of the units and the transformation project of this system in the first place.Then,we carry out the simulation of this system and verify the reliability of this system.And also,several typical changes of working conditions were analyzed and the detailed analysis of the thermal performance was carried out.The parameters of the unit with the changes of the parameters of the unit after the high back pressure were analyzed.Finally,based on the actual heating data,the static investment recovery period of the whole high back pressure reconstruction project was calculated.The results show that the single condenser high back pressure heating retrofit scheme improved the economy of the unit,obtains the expected result of energy conservation and emissions reduction,It provides reference for the high back pressure heating of the same type unit.