Ammonia-water absorption type refrigerator driven by oilfield waste heat and used for recycling light hydrocarbon

The invention discloses an ammonia-water absorption type refrigerator driven by oilfield waste heat and used for recycling light hydrocarbon. The absorption type refrigerator is composed of a conduction oil generator, a rectifying tower, a condenser, a liquid ammonia tank, a subcooler, a liquid filling bubbling absorber, a solution heat exchanger, a fire tube furnace flue gas finned tube recoverer, a heating medium furnace flue gas finned tube recoverer, a concentrated solution tank, a solution pump, an electric control cabinet, an electric regulating valve and a temperature sensor. The ammonia-water absorption type refrigerator has the characteristics that exhaust flue gas waste heat of a heating medium furnace and a fire tube furnace in an oilfield light hydrocarbon recycling technical process is fully recycled, and the recycled waste heat is used for driving a unit to perform refrigeration for replacing a traditional compression type refrigerator in the oilfield light hydrocarbon recycling technical process, and thus the electric power consumption for recycling the oilfield light hydrocarbon is reduced while the exhaust flue gas temperature of the heating medium furnace and the fire tube furnace is decreased and air environmental pollution is reduced. The binding equilibrium of cold and heat in an oilfield light hydrocarbon recycling technique is achieved, and the unit has multiple advantages that the operation is reliable, easy and convenient, and the electricity consumption is reduced by 90% compared with the traditional compression refrigerator.