介绍1333t／d铜冶炼烟气制酸装置干吸工序的设计特点。通过提高空塔气速、增加分酸点和喷淋密度实现干吸塔的高效设计，以节约投资。干吸工序为泵后冷却流程，干吸塔采用低位布置，节省了酸泵能耗。泵槽为卧式，从根本上解决了进口硫酸对泵槽的冲刷腐蚀问题。干燥塔和吸收塔共用一个泵槽，为避免干燥系统的SO2串入吸收系统，干燥酸从一吸塔上酸管串入。整个系统共设置5个控制回路。%The design features of drying and absorption section in a 1333t/d sulphuric acid plant based on copper smelter off-gas are described. High efficiency design was conducted for cost saving by increasing empty tower gas velocity, acid distribution points and liquid rate. The drying and absorption section adopted a pump-after cooling process with low-position arragement of drying and absorption towers to decrease power requirement of pumps. Pump tank was designed in horizontal form, so the brushing corrosion by sulphuric acid was thoroughly avoided. A common pump tank was used for both drying and absorption towers. To prevent SO2 carrying from drying system to absorption system, drying acid was added to intermediate absorption tower at the inlet pipe. Five control circuits were set in the system.
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