醋酸系统低压吸收塔运行瓶颈分析及性能提升

Analysis of Operation Bottleneck and Performance Improvement of Low Pressure Absorption Tower of Acetic Acid System

兖矿鲁南化工有限公司醋酸装置在产能进一步优化提升过程中,低压吸收塔限制瓶颈问题凸显,随着生产负荷的提升,精馏放空尾气量增加,低压吸收塔运行指标逐渐恶化,并出现拦液现象,影响吸收效果,不但造成碘甲烷损失,同时造成火炬跑碘环保事故。为了消除系统环保隐患,同时为了满足产能进一步提升需求,低压吸收塔亟需实施改造。

Yankuang Lunan Chemical Co.,Ltd.in the process of further improving acetic acid production capacity,The bottleneck problem of low pressure absorber is prominent,With the increase of production load,the vent gas also increases,The operation index of low-pressure absorption tower is getting worse,And began to block the liquid,The absorption effect is affected,Finally,the loss of iodine and the accident of iodine environmental protection are caused.In order to eliminate the hidden dangers of environmental protection and meet the needs of acetic acid capacity improvement,The low pressure absorber needs to be reconstructed.