METHOD FOR RECYCLING MOTHER LIQUOR IN PTA REFINED UNIT

摘要

The present invention relates to a method for recycling mother liquor in a PTA refined unit. The present invention achieves recovery of waste heat carried by PTA mother liquor and PT acid by using high-efficient multi-stage flash evaporation technology, low temperature waste heat power generation technology, heat pump heating and refrigeration technology, low temperature crystallization and the like, realizing effective use of heat carried by the PTA mother liquor, solving the impact of crystallization of PT acid on subsequent systems, reducing environmental pollution, and generating huge economic benefits.