Research On Absorption Heat Pump Appling To Petroleum And Chemical Enterprise

Environment protection and energy conservation is a popular issue now. And it is becoming a highly valued opinion of how to recovery the low temperature waste heat occurring in industrial process. Heat pump, as an effective energy saving device, is qualified to be employed in saving energy and enhancing energy utilization. Based on the study of large low temperature waste heat occurring in Daqing Petrochemical Plant, The first category absorption Heat Pump system is proposed to recover low temperature waste heat and supply heat in winter for plant office.Circulating water and heating conditions were first investigated in Daqing Petrochemical Plant, heat pump technology is feasible for old systerm transforming both in economic and technical. Choose initial investment and operating costs, and etc are important evaluation item, Compressed and the First kind absorption heat pump heating program were calculated and compared. The results showed that it is less investment and shorter payback for the First kind pump. Contrast the original heating program, the annual cost savings could be 1.38 million yuan. The software was developed for lithium bromide absorption heat pump system, two regression methods were studied in LiBr-H2O properties model to solve crystallization accuracy of regression curve. Through the backwater temperature, waste heat temperature drops and heat exchanger efficiency were analyzed for the heat transfer coefficient of thermal units HRH, and ultimately determine its operation parameters, and hot water fluctuations,as influence factor for coefficient and safty, was analyzed.Through the study, the First kind heat pump technology was used to extracted low-grade recycled water (34℃) in the Daqing Petrochemical Plant, heat terminal integrat with the heating pipe network existed, HRH unit would final output 80℃water in the heating program. A relatively complete LiBr heat pump system design software was established, compared with the data in fact, the software better meet the practical needs of the project, which provide convenient for the future LiBr heat pump system design, performance testing in different working conditions, as well as promote the popularized of the unit.