氯化法生产钛白粉工艺中,四氯化钛(TiCl_4)生产工序所产生的尾气(主要为氯气),在排放前需用盐酸淋洗进行吸收,以免污染空气。所需的盐酸浓度为20％～30％,温度60℃,流量35m~3/h。使用65FS-40型耐酸泵进行输送,该泵结构如图1。从图1可以看出,理论上泵运转时,泵轴4接触不到盐酸,但由于安装及操作等原因,往往会引起一些盐酸通过机械密封等泄漏出 Chlorination of titanium dioxide production process, titanium tetrachloride (TiCl_4) produced during the production of exhaust gas (mainly chlorine), before the discharge required hydrochloric acid leaching to absorb, so as not to pollute the air. The required concentration of hydrochloric acid 20% to 30%, temperature 60 ℃, flow 35m ~ 3 / h. The use of 65FS-40 type acid pump delivery, the pump structure shown in Figure 1. As can be seen from Figure 1, in theory, pump operation, pump shaft 4 can not contact hydrochloric acid, but due to installation and operation and other reasons, often lead to some hydrochloric acid leakage through a mechanical seal