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《化学与技术》模块 电是氯碱工业中的一种废弃物,其大致组成如下表所示: 成分 CaO SiO 2 Al 2 O 3 Fe 2 O 3 MgO CaS 其它不溶于酸的物质 质量分数(%) 65~66 3.5~5.0 1.5~3.5 0.2~0.8 0.2~1.1 1.0~1.8 23~26 用电可生产无水CaCl 2 ,某化工厂设计了以下工艺流程: 已知氯化钙晶体化学式是:CaCl 2 ?6H 2 O,H 2 S是一种酸性气体,具有还原性. (1)反应器中加入的酸用______. (2)脱色槽中应加入的物质X是______;设备A的作用是______;设备B的名称是______;设备C的作用是______. (3)为了满足环保要求,需将废气H 2 S通入吸收池,下列物质中最适合作为吸收剂的是______. A.水 B.浓硫酸 C.石灰乳 D.硝酸 (4)将设备B中产生的母液重新引入反应器的目的是______.
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