Application Of Highly Backheating Temperature Type AHT In The Process Of Refinery Gas

In this paper, oil refining enterprises in the production of low-temperature waste heat generated during the actual situation, put forward the use of crude oil distillation unit, catalytic cracking and delayed coking unit of heat through the back Thermophilic type II absorption heat pump units to replace the boiler, to the removal of propane steam tower bottom reboiler to provide the technical program, a detailed analysis of Regenerative Type II high temperature absorption heat pump cycle is established based on energy balance, the relationship between mass and heat balance calculation model , on this basis, has embarked on a right back to the second category of high temperature thermal absorption heat pump units parameters of thermodynamic calculation. Thermodynamic calculation program compiled on the system under different heat recovery rate, different deflated scope, and different condensation temperature variable operating conditions, the system COP, low-temperature absorber gas-range, over temperature, evaporation temperature, heat transfer area and two changes in the performance index of the conduct of a detailed analysis. Refinery with the actual energy consumption, energy use and the layout of each device in the refinery situation, the use of waste heat back to the second category of high temperature thermal absorption heat pump for the steam system and refinery waste heat production facilities, low-pressure steam demand for devices a reasonable matching process carried out research and development, a set of feasible technical solutions to enable the effective combination of the three. Use of payback period and dynamics of the annual cost of other economic indicators, right back to the second category of high temperature thermal absorption heat pump for the steam system, economy is evaluated. And the connection with a traditional boiler steam supply system in comparison drawn back to the second category of high temperature thermal absorption heat pump for the steam system, a dynamic annual cost far less than the boiler steam supply system, the investment recovery period is less than one year outstanding energy-saving emission reduction effect of the conclusions, indicating use of a Heat-style high temperature absorption heat pump for the second type system instead of steam for the steam boiler system has a very high energy efficiency, economic and environmental benefits, with a wide range of application prospects.