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365体育app厂家:溴素的制造工艺

2021-09-15

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  365体育app厂家认为随着自动控制技术的广泛应用,人们更加积极地依靠新技术来加强安全生产管理。自动控制技术和安全仪表技术在化工厂生产中的应用,可以通过对工艺参数的自动控制,避免人工操作带来的事故隐患,有效降低劳动强度,改善操作人员的工作环境,实现化工生产过程的安全高效运行。目前,我国正在积极推进自动化控制技术在化工厂的应用,但经过调查发现,自动化控制技术在地方中小型化工企业的应用率并不高。

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  365体育app厂家认为溴是重要的化工原料之一,是海洋化工的主要分支。种类繁多的无机溴化物、溴酸盐和由溴衍生的含溴有机化合物在国民经济和科技发展中具有特殊价值。溴广泛用于医药、农药、染料、阻燃剂、灭火剂、制冷剂、感光材料等。

  365体育app厂家认为溴是棕红色、易挥发、有刺激性气味的液体,密度为3.1克/厘米,熔点为-7.2.沸点为59.5.有毒且有腐蚀性。蒸汽是红色的,固体是黄绿色的,有金属光泽。20时在水中的溶解度为3.38g/100g的水,易溶于si氯化碳、er硫化碳、乙醇等有机溶剂。化学性质与氯相似,能与氢、金属和大部分非金属反应,但活性比氯差。即使溴蒸气浓度很低,也会灼伤nian膜,引起咳嗽、nian膜分泌增多、流鼻血、头晕等症状。液溴会灼伤皮肤,使皮肤变黄。最大允许浓度为0.5 mg/m,中毒30-40min即可致死。

  365体育app厂家认为空气吹溴法工艺流程:盐水仓盐水由离心泵送入管道,废酸加入管道。盐水用苦咸水稀释的硫酸酸化,然后与通入的lv气发生初步的氧化还原反应,进入吹洗塔上部并向下喷淋,再与塔底吹来的空气在填料表面进行气液交换。分析并吹出卤水中游离溴,脱溴后吹出的废液从塔底排入盐田晒盐;二氧化硫在吸收塔瞬时负压状态下被吸入,溴混合气体被吸收塔顶部风道下游的二氧化硫气体吸收,形成的氢溴酸液滴汽雾被吸收塔和泡沫捕集器富集,冷凝成氢溴酸母液,送至一级酸槽。

  365体育app厂家认为来自初酸罐的初酸从回收塔上部加入,流入蒸馏塔顶部,然后沿填料玻璃环表面自上而下流动,自下而上与lv气和水蒸汽接触,溴素不断被氧化,从蒸馏塔上部蒸馏出来,经冷凝后得到溴素和溴水的混合物。溴和溴水的混合物在分离瓶中分离,溴水返回蒸馏塔,分离出的液溴流入溴素储罐,得到溴素成品。

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