醋酸精馏塔顶余热回收制取蒸汽系统优化与能效提升

Optimization and Energy Efficiency Improvement of the Steam Generation System Utilizing Waste Heat from the Top of the Acetic Acid Distillation Column

摘要

为实现对醋酸精馏塔顶余热的有效回收与利用。本文细致分析了当前余热回收制取蒸汽面临的介质腐蚀、参数波动等挑战，并提出升级耐腐蚀材料、分段梯级换热等综合优化措施。同时，针对主蒸塔塔顶余热利用项目，对其采用“溴化锂机组吸收低温余热制取蒸汽+低温余热制取低温冷冻水”双联供装置，实现对余热的梯级回收进行详尽探讨。研究表明，所提出的优化策略及双联供装置，可有效解决醋酸体系余热回收的腐蚀与能效瓶颈，在显著提升余热利用率的基础上，极大降低蒸汽外购与电力消耗。

Abstract

To achieve effective recovery and utilization of the waste heat from the top of the acetic acid distillation column, this paper thoroughly analyzes the challenges currently faced in waste heat recovery for steam generation, such as medium corrosion and parameter fluctuations, and proposes comprehensive optimization measures including the adoption of corrosion-resistant materials and staged cascade heat exchange. Additionally, the study examines the waste heat utilization project at the main distillation column top implemented by Shandong Luzhishen New Materials Company, which employs a dual-supply system combining “Ehara low-temperature waste heat for steam generation and low-temperature waste heat for chilled water production” to enable hierarchical waste heat recovery. The research demonstrates that the proposed optimization strategies and the Ehara dual-supply system effectively address the corrosion and energy efficiency bottlenecks in acetic acid system waste heat recovery, significantly improving waste heat utilization efficiency while substantially reducing steam procurement costs and power consumption.

关键词

醋酸精馏 / 余热回收 / 蒸汽制取 / 能效提升

Key words

acetic acid distillation / waste heat recovery / steam generation / energy efficiency improvement

参考文献

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[2] 陈颢. 精馏系统能量集成与太阳能利用协同优化研究[D]. 天津大学, 2022.

[3] 王传成. 精馏塔顶高温气体综合利用与过程控制[J]. 氮肥技术, 2021, 07 (22): 27-29.