姚伟　韩洋　孙浩程

摘      要：调试首先建立起设备内液位，利用空气作为试验气体，确定了电机频率、吸收液循环量和引风量间的关系，同时分析了引风量波动的原因。针对目标尾气进行反应过程的物料平衡研究，根据目标尾气特性选取二级处理模式，并通过实测不同电机频率下吸收液浓度与处理效果之间的关系，同时结合处理指标要求确定了最小的吸收液循环量。本次调试为此套设备及类似设备针对不同目标尾气的调试和物料平衡建立提供了参考和依据。

关  键  词：超重力;NO_x;气液平衡;处理效果

中图分类号：TQ016       文献标识码： A       文章編号： 1671-0460（2020）07-1360-05

Research on Debugging and Vapor-Liquid Equilibrium

of High-gravity Equipment for Removing NOx

YAO Wei1， HAN Yang1， SUN Hao-cheng2

（1. Sinopec Catalyst Dalian Co.， Ltd.， Dalian Liaoning 116043， China;

2. Dalian Research Institute of Petroleum and Petrochemicals， Dalian Liaoning 116045， China）

Abstract： The liquid level in the equipment was established before commissioning.The relationship among motor frequency， absorption liquid circulation and induced air volume was determined by using air as test gas， and the cause of induced air volume fluctuation was analyzed. The material balance of the target tail gas was studied. According to the characteristics of the target tail gas， the two-stage treatment mode was selected， and the relationship between the concentration of the absorption liquid and the treatment effect was measured under different motor frequencies. At the same time， the minimum circulation of the absorption liquid was determined according to the requirements of the treatment index. This commissioning can provide some reference and basis for the commissioning and material balance establishment of this set of equipment and similar equipments according to different target tail gas.

Key words： High-gravity; NOx; Vapor-liquid equilibrium; Treatment effect

液相吸收法是一种常用的工业尾气处理技术，其中尿素溶液作为一种吸收介质常用于工业尾气中氮氧化物的吸收^[1]，一方面其具有安全、清洁的优点，而另一方面去除效率不高限制了该方法更广泛应用，尤其传质效率对整个吸收过程影响很大。超重力技术^[2]利用人为制造的超重力场，进而制造更大的传质面积、更薄的液膜和更强烈的液体湍动，以达到加速传质的目的。

以尿素为吸收介质的超重力反应器在应用过程中的脱NO_x效率受很多因素影响，其中气相和液相间的平衡关系^[3，8]是一个重要因素。尤其新设备调试阶段气液平衡的建立与各项运行参数的确定对设备的长期高效运行有着重要意义。

本次调试的是一套由4台超重力反应器及其他附属设备组成的脱NO_x设备，4台超重力反应器可采用一级处理模式，也可采用两级处理模式，其工艺流程如图1所示。……