氨水精馏塔填料吹翻现象及处理措施

Blow-Over Phenonmenon and Treatment of Ammonia Distilation Column Packing

合成回路放出的尾气,其中氨气回收采用水吸收,富氨水通过精馏塔再生,塔顶组分为液氨作为产品回收,塔底贫液循环利用,产品氨浓度可以达到96%,釜液氨浓度0.02%,经吸收后的驰放气氨含量低于0.1%,满足后系统氢回收单元的要求.精馏塔放置上、中、下三层1寸鲍尔环填料,共计3M3,为使气液分布均匀,充分完好接触,防止壁流发生,每层设置有再分布器,氨水溶液自塔的上、中层填料之间进入,加料口之上即精馏段,下位提馏段.为补充操作过程洗水的损失量,于塔下部还设有补充水加入管线.

Synthesis loop out of the exhaust gas, ammonia gas recovery by water absorption, rich ammonia through rectifying column, the regeneration tower group is divided into liquid ammonia as a product recycling, bottom barren solution recycling, ammonia concentration of product can reach 96%, still liquid ammonia concentration 0.02%, after absorbing the chi is deflated ammonia content lower than 0.1%, to meet the requirements of the system after the hydrogen recovery unit. The column prevents the top, middle and bottom three layers of 1-inch pall ring packing, totaling 3 M3. In order to make the gas-liquid distribution uniform, fully intact contact and prevent the wall flow, each layer is equipped with a redistributor. The ammonia solution enters between the top and middle layers of the column. In order to supplement the loss of washing water during operation, a supplementary water addition pipeline is arranged at the lower part of the tower.