氯磺酸装置的技术改造

由于排管冷却器泄漏和原料氯化氢气体水分含量偏高，氯磺酸装置产量不达标，产品质量差。在改造过程中，对排管冷却器进行维修，以克服冲刷腐蚀和消除遗留的泄漏因素；更换填料减小系统阻力；增设1座浓硫酸干燥塔，控制氯化氢气体w(H2O)为0．06％～0．07％，改造后，系统基本能满负荷运行，产品w(HSO3Cl)由95％左右提高到97．61％。

Technical retrofitting of a chlorosulfonic acid plant

Cooler leakage and high moisture content of hydrogen chloride feed gas caused less output and substandard product of a chlorosulfonic acid plant. So a retrofitting was carried out, in which the cascade cooler was repaired to resist washing corrosion and eliminate leak, the packing was changed to reduce system resistance and a concentrated sulphuric acid drying tower was installed to control the moisture content of hydrogen chloride gas at 0. 06% -0.07%. After retrofitting, the system could operate at basically full load and HSO3Cl content of product was increased from 95% to 97. 61% .