铵(氨)循环工艺的原理及应用
收稿日期: 2021-09-17
网络出版日期: 2022-08-26
基金资助
辽宁省“兴辽英才计划”项目(XLYC1907167);辽宁省高等学校创新人才支持计划(LR2018078)
Principle and application of ammonium(ammonia) circulation process
Received date: 2021-09-17
Online published: 2022-08-26
在化工生产中常需要使用酸碱参与反应,酸碱的消耗不仅增加了生产成本,还会排放含酸碱的废渣或废液而危害环境。铵(氨)循环工艺可作为解决上述问题的一个有效方法。在铵(氨)循环工艺中,铵(NH4+)与某些物料反应,同时铵转化为氨(NH3);再用氨与物料反应,氨重新转化为铵,获得铵(氨)循环使用。铵(氨)循环反应结束后获得了产品,但铵和氨在工艺内循环使用,形成闭路循环,不仅避免了酸碱等物质的消耗和排放,甚至在某些情况下还能达到理论上100%的反应原子利用率。由于铵(氨)循环工艺绿色环保,可生产高附加值的产品,具有很高的工业应用价值。铵(氨)循环工艺在制备或提取纯碱、碳酸钙、氧化铝和氢氧化镁等领域已展示了独特的优势,介绍了氨(铵)循环工艺在化工领域的一些应用,以期让此工艺为更多产品的生产提供借鉴和参考。
王志远 , 窦泽伟 , 熊莉佳 , 范天博 , 刘云义 , 郭洪范 . 铵(氨)循环工艺的原理及应用[J]. 无机盐工业, 2022 , 54(8) : 47 -53 . DOI: 10.19964/j.issn.1006-4990.2021-0523
It is often necessary to use acid and alkali to participate in the reaction in chemical production.The consumption of acid and alkali not only increases the production cost,but also discharges the waste residue or liquid containing acid and alkali,which endangers the environment.Ammonium(ammonia) circulation process can be employed as an effective method to solve the above problems.In the ammonium(ammonia) circulation process,ammonium(NH4+) reacts with certain materials and converts into ammonia(NH3);then ammonia reacts with the materials and reconverts into ammonium,and the obtained ammonium(ammonia) is recycled.After the ammonium(ammonia) circulation reaction,the product is obtained.However,the ammonium and ammonia are recycled in the process without discharge,which is recycled in the process to form a closed loop.It not only avoids the consumption and emission of acid,base and other substances,but also can achieve theoretically a 100% utilization rate of reacted atoms in some cases.Because the ammonium(ammonia) circulation process is green and envitonment-friendly and can produce high value-added products,it bears very high industrial application value.Ammonium(ammonia) circulation process has shown unique advantages in the preparation or extraction of soda ash,calcium carbonate,alumina oxide and magnesium hydroxide.Some applications of ammonium(ammonia) circulation process in chemical industry field were introduced,which was expected to provide reference for the promotion of this process in the production of more products.
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