变换汽提塔智能调控与集成蒸汽换热系统耦合优化—技术升级与系统能效跃升研究

Coupling Optimization of Intelligent Control and Integrated Steam Heat Exchange System in Steam Stripping Tower: Research on Technology Upgrade and System Energy Efficiency Leap

摘要

针对云南大为制氨有限公司变换汽提塔在运行过程中面临的塔顶温度偏低、汽提效率低下、冷凝液中氨氮浓度超标及仪表元件频繁堵塞等难题，本公司实施了以“集成蒸汽换热系统+智能回流液调控+冷凝液循环利用”为核心的技术革新方案。本文全面剖析了改造背景、技术路径、实施细节及改造后的运行成效。改造后，汽提塔出口冷凝液的氨氮浓度显著下降，从改造前的12000 mg/L降至4000 mg/L以下，远低于预设的8000 mg/L目标值，有效解决了仪表堵塞问题，提升了装置的整体运行稳定性和环保标准，展现了显著的工程应用前景与经济效益。

Abstract

To address operational challenges at Yunnan Dawei Ammonia Co., Ltd., including suboptimal tower top temperature, inefficient stripping efficiency, excessive ammonia nitrogen concentration in condensate, and frequent instrument blockages in the conversion stripping tower, our company implemented a technical innovation solution integrating an integrated steam heat exchange system, intelligent reflux liquid control, and condensate recycling. This paper provides a comprehensive analysis of the retrofitting background, technical approach, implementation details, and post-retrofit operational outcomes. Post-retrofit, the ammonia nitrogen concentration in the stripping tower’s condensate outlet was significantly reduced from 12,000 mg/L before retrofitting to below 4,000 mg/L, far below the preset target of 8,000 mg/L. The solution effectively resolved instrument clogging issues, enhanced overall plant stability and environmental compliance, and demonstrated significant engineering applicability and economic benefits.

关键词

变换汽提塔 / 氨氮净化 / 蒸汽换热技术 / 技术升级 / 运行优化

Key words

steam stripping tower / ammonia nitrogen purification / steam heat exchange technology / technology upgrade / operation optimization

参考文献

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