Module and method for recycling waste heat in ethylene glycol evaporation system

• Main Authors: JIANG HAIJIN, ZHANG GUANGRUI, GAO HAIYUN
• Format: Patent
• Language: Chinese; English
• Published: 22.11.2022
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; BLASTING; CHEMISTRY; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; METHODS OF STEAM GENERATION; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM BOILERS; STEAM GENERATION; TRANSPORTING; WEAPONS

The waste heat recycling module comprises an ethylene glycol purifying tower, a tower top cooler and a pressure regulating valve are arranged at the upper end of the ethylene glycol purifying tower, the lower end of the ethylene glycol purifying tower is sequentially communicated with a first circulating pump and a reboiler, and the output end of the reboiler is communicated with an inner cavity of the ethylene glycol purifying tower. One end of the ethylene glycol purifying tower is provided with a desalted water heat exchanger and a circulating water heat exchanger which are communicated, one end of the desalted water heat exchanger is connected with the middle of the ethylene glycol purifying tower through an ethylene glycol pump, and the upper end of the ethylene glycol purifying tower is provided with a steam generator communicated with a tower top cooler; a third recovery pipe and a second recovery pipe which are communicated with the steam generator are respectively arranged at the upper ends of the de