一、前言我国化纤棉浆粕行业六十年代采用了预酸预氯工艺,其流程简单,用氯量约是绝干量的0.5%左右,氯化效果很差,氯化作用很不完全。在氯化时车间内散放出氯气,影响人体健康。七十年代采用了塔式“封闭”通氯,避免了氯气大量外逸,氯化后经碱化 I. Introduction China’s chemical fiber cotton pulp industry in the sixties using pre-acid pre-chlorination process, the process is simple, the amount of chlorine is about 0.5% of the absolute amount of dry, chlorination is poor, chlorination is not complete. Chlorine in the workshop when the release of chlorine, affecting human health. Seventies adopted the tower “closed ” through the chlorine, to avoid a large number of chlorine escape, after chlorination alkalization