Method for recovering heat from low-grade steam in the ethylene glycol purification unit
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Experts in coal/syngas, please discuss where the low-grade steam generated after the reboiler in the ethylene glycol purification unit goes, and what methods exist for recovering this heat.
I would like the experts in the field of ethylene glycol production from coal/syngas to discuss where the low-quality steam generated after the ethylene glycol purification unit goes, and what methods can be used to recover this heat.
What are the big shots busy with? Is no one paying attention to me? Does my question not interest the experts?
Flash evaporation produces low-pressure steam and condensate for reuse
This post was last edited by TH373637 on 2017-1-9 at 13:15. The utilization of low-quality steam has always been a challenge in this industry. Low-pressure steam can be used for power generation or as a heating source; the condensate from medium-pressure steam can be flashed to produce low-pressure steam for reuse. The condensate from low-pressure steam is employed for heat tracing and as a heating source in distillation towers, thereby reducing the amount of circulating water needed in low-pressure steam condensers and achieving energy and water savings. Other uses are relatively rare; if the quantity is very small, they are simply abandoned. The main constraints are economic and technical
By using MVR compressors, recycling is achieved to make full use of the latent heat of low-grade steam.
Steam with a pressure of over 1 kilogram can be used for ORC expansion power generation, while steam with a pressure of over 4 kilograms can be used to drive turbines for power generation