硫铁矿制酸40 kt/a改80 kt/a的技改措施和运行情况

介绍广西鹿寨40kt/a硫酸装置扩产改造为80kt/a,对沸腾炉、电除雾器、干吸塔及转化系统等的改造和运行情况。改造后硫铁矿渣w(S全)小于0.6%,矿渣w(Fe)达到60%以上;余热锅炉中压过热蒸汽吨酸产汽量达到1.2t;净化工序稀酸污水排出量≤1m3/h,w(H2SO4)≤0.7%;转化系统转化率达到99.8%;尾气排放Φ(SO2)<0.013%,远低于0.0336%的环保指标。

Capacity expansion revamping from 40 kt/a to 80 kt/a sulfuric acid plant and its operation from pyrite raw material

The capacity expansion revamping from 40 kt/a to 80 kt/a sulfuric acid plant from pyrite raw material in Luzhai Fertilizer Co., Ltd. is introduced, including fluidized-bed roaster, electric defroster, dry absorption tower, and conversion system. After the revamping with pyrite cinder in w （ S ） 〈 0.6% and w （ Fe ） 〉 60%, medium-pressure superheated steam yield of 1.2 t per ton acid in waste heat boiler, wastewater discharge amount of less than 1 m^3/h, w （ H2SO4 ） ≤ 0.7% in cleaning section, conversion rate of 99.8%, φ （ SO2 ） in tail gas of less than 0.013% with far lower than environmental nrotection index 0.033 6%