苛化工段绿液真空冷却系统及其运行实践

介绍了冷却绿液的一种新型技术——绿液真空冷却系统,该系统以绿液真空冷却器为核心,利用真空闪蒸原理将绿液温度降至80~90℃,以满足后续消化反应的要求。本文阐述了该系统的工作原理、技术参数、设备组成、工艺流程等,并结合生产实例及运行情况分析了该系统在不同工艺条件下相关参数的计算。该系统具有系统集成化、占地面积小、能量消耗低等特点,是苛化工段热能合理循环利用和节能降耗的重要环节。

Green liquor vacuum cooling system and its operation practice in causticizing section

This paper introduces a new technology- -green liquor vacuum cooling system, which is consisted mainly of the green liquor vacuum cooler. The temperature of green liquor is reduced to 80-90℃ by vacuum flash evaporation in order to meet the requirement of the subsequent digestion reaction. The working principle, technical parameters, structure and technological process of the system were introduced; calculation of the relevant parameters under the different process conditions of the system was also analyzed in accordance with the production practice and the operation condition. This system has the characteristics of integration, less footprint and lower energy consumption, becomes an important parts for the reasonable energy utilization and energy-saving ＆ consumptionreducing in causticizing section.