赤泥烟气脱硫生产工艺中循环泵入口处滤网的设计

来源期刊：有色金属2010年第3期

论文作者：杨国俊 张文帅 李威 杨超琪

文章页码：152 - 155

关键词：环境工程； 赤泥烟气脱硫； 滤网设计； 吸收

Key words：environment engineering； flue gas desulfurization with red mud； filter design； absorption

摘    要：吸收塔是赤泥烟气脱硫工艺中的核心设备,在维护吸收塔正常、稳定、高效运行的因素中,喷嘴和循环泵是两个至关重要的设备。为了防止喷嘴堵塞以及循环泵叶轮受损在循环泵入口处加设滤网,以保证浆液均匀、连续、稳定的喷淋。根据滤网的运行环境,充分考虑滤网的材质、结构等方面的设计要求,综合考虑防腐、耐温性能,强度、韧性以及成本等诸多因素,滤网材质选用玻璃钢(FRP)。滤网可以采用典型的柱形结构,也可根据实际需要采用半球形结构。确定滤网开孔的直径以20mm左右为宜,可有效过滤杂质,防止堵塞,而滤网的有效过滤面积取浆液循环泵口截面面积的2.5倍。

Abstract: Absorption tower is a core equipment in the flue gas desulfurization process with red mud.The nozzle and circulating pump are two essential parts among all the factors to maintain normal,stable and efficient operation of the absorption tower.In order to prevent nozzle from clogging and the circulating pump impeller from damaging,it is advised to install the filter at the entrance of the circulating pump to ensure the uniform,continuous and stable spray of the slurry.According to the filter gauze’s operating environment,giving full consideration to the filter gauze’s design requirements such as material,structure and so on,considering the anti-corrosion,heat resistance,strength,toughness,and cost,and many other factors,finally fiberglass(FRP) is used as the filter gauze’s material.Typical cylindrical structure and hemispherical structure can also be used according to actual needs.As a result of calculation,about 20mm diameter of filter gauze’s hole to is appropriate,with this size the filter gauze can filter impurities effectually have good blockage prevention.At last the effective filtration area of filter gauze gets 2.5 times the slurry circulating pump’s sectional area.