Efficient recovery system for ionic liquid desulfurization desorption waste heat

The invention relates to an ionic liquid desulfurization desorption waste heat efficient recovery system which comprises a heat energy recovery system, a heat energy transfer system connected with the heat energy recovery system and terminal heat utilization equipment, the heat energy recovery system comprises a precondenser and a condenser, and the heat energy transfer system comprises a circulation box, a circulation pump connected with the circulation box and a water pipe connected with the circulation pump. The end, away from the circulating pump, of the water pipe is connected with a cold end inlet of the precondenser. The terminal heat utilization equipment comprises an isobaric water tank and a high-temperature water pipe connected with the isobaric water tank, the end of the high-temperature water pipe is connected with a cold end outlet of the precondenser, the isobaric water tank is connected with a plurality of terminal heat exchangers, low-temperature deionized water obtained after heat exchange o