污水汽提与溶剂再生热自循环系统

By using a wastewater stripping and solvent regeneration heat self-circulation system, dual recovery of waste heat from purified water, lean amine solution, and condensate is achieved, forming a closed-loop heat circulation within the system. This solves the problem of high steam consumption in existing processes and achieves significant energy-saving effects.

CN122010218BActive Publication Date: 2026-07-17SHANGHAI YOUHUA PROCESS INTEGRATED TECH CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI YOUHUA PROCESS INTEGRATED TECH CO LTD
Filing Date
2026-04-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing processes, the energy consumption of wastewater stripping units and solvent regeneration units remains high, mainly because the waste heat of materials in the tower and the waste heat of reboiler condensate are not fully recovered, resulting in excessive steam consumption.

Method used

The system employs a wastewater stripping and solvent regeneration heat self-circulation system. Through the combination of a wastewater stripping tower, a wastewater stripping reboiler, a solvent regeneration tower, a solvent reboiler, a steam generator, and a steam compression unit, it achieves dual recovery of waste heat from purified water, lean amine solution, and condensate. The steam compression unit forms a closed-loop circulation, replacing part of the externally supplied high-quality steam.

Benefits of technology

It achieves deep recovery of waste heat and closed-loop circulation of heat within the system, reducing fresh steam consumption by more than 30%, achieving an overall energy saving rate of 31.7% to 33.8%, and reducing operating costs by 27%.

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Abstract

本申请提供污水汽提与溶剂再生热自循环系统,包括:污水汽提塔;污水汽提再沸器,其净化水入口与污水汽提塔的净化水出口连接,其第一汽提蒸汽出口与污水汽提塔的第一气相返回口连接;溶剂再生塔;溶剂再沸器,其贫胺液入口与溶剂再生塔的贫胺液出口连接,其第二汽提蒸汽出口与溶剂再生塔的第二气相返回口连接;第一蒸汽发生器和 / 或第二蒸汽发生器,其热侧入口与净化水出口 / 贫胺液出口连接,其冷侧入口与凝结水出口连接;蒸汽压缩单元,其气相入口与第一蒸汽发生器的第一气体出口和 / 或第二蒸汽发生器的第二气体出口连接,其气相出口与第一蒸汽入口及第二蒸汽入口连接。本申请能够深度回收塔内物料余热和再沸器凝结水余热、降低系统蒸汽消耗。
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