Research & Development

Study on mechanism and conditions of the new process of ammonium chloride conversion

  • Fei Li ,
  • Jianmin Zhou ,
  • Chengyu Li ,
  • Wentao Xu ,
  • Xinyue Zhang ,
  • Xinwei Li ,
  • Jun Wang ,
  • Zhiyong Ji ,
  • Yingying Zhao ,
  • Xiaofu Guo ,
  • Junsheng Yuan
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  • 1. School of Chemical Engineering,Hebei University of Technology,Engineering Research Center for Chemical Technology of the Efficient Utilization of Seawater Resources,Tianjin 300130,China
    2. Collaborative Innovation Center of Hebei Modern Marine Chemical Technology
    3. School of Chemical Engineering,Hebei University of Technology,Chemical Energy Conservation Process Integration and Resource Utilization National-Local Joint Engineering Laboratory

Received date: 2020-09-17

  Online published: 2021-03-11

Abstract

Aiming at the problem of excess capacity of ammonium chloride in soda industry,a new way of conversion of ammonium chloride was put forward.Solid ammonium chloride and magnesium carbonate were used as raw materials to produce magnesium chloride,ammonia,carbon dioxide and water by solid-state heating reaction.Ammonia and carbon dioxide can be recycled using for soda production.The reaction mechanism of solid ammonium chloride and magnesium carbonate was investigated from the thermodynamics,and the effects of reaction temperature,reaction time and ratio of ingredients on the conversion of ammonium chloride were discussed.The orthogonal experiment was carried out to determine the optimal reaction conditions,the products were characterized by XRD,SEM and EDS.The results show that the optimum reaction conditions were as follows:the amount-of-substance ratio of magnesium carbonate and ammonium chloride was 1.8∶2.0,the temperature was 523 K and the reaction time was 120 min.Under the conditions,the conversion ratio of ammonium chloride can reach 94.40% and the purity of magnesium chloride can reach the industrial standard.

Cite this article

Fei Li , Jianmin Zhou , Chengyu Li , Wentao Xu , Xinyue Zhang , Xinwei Li , Jun Wang , Zhiyong Ji , Yingying Zhao , Xiaofu Guo , Junsheng Yuan . Study on mechanism and conditions of the new process of ammonium chloride conversion[J]. Inorganic Chemicals Industry, 2021 , 53(3) : 48 -53 . DOI: 10.11962/1006-4990.2020-0216

References

[1] Wu Yifan, Xie Heping, Liu Tao, et al. Soda ash production with low energy consumption using proton cycled membrane electrolysis[J]. Industrial & Engineering Chemistry Research, 2019,58(8):3450-3458.
[2] 尚建壮, 石青松. 我国纯碱行业发展回顾及未来发展重点[J]. 化学工业, 2020,38(1):13-17.
[3] Helen Lee. China soda ash improves but deep sea imports a drag[J]. ICIS Chemical Business, 2020,298(5):20.
[4] 李敏. 纯碱市场分析及前景展望[J]. 中国石油和化工经济分析, 2018(9):57-59.
[5] 张晨鼎. 2017 年国外纯碱工业发展概况与趋势[J]. 纯碱工业, 2018(6):3-7.
[6] Bewley Lindsey. U.S.Soda ash production falls amid low producer inventories[J]. Chemical Week, 2010,172(30):29.
[7] 颜鑫. 一种氨碱厂碱渣综合利用新技术[J]. 无机盐工业, 2019,51(2):88.
[8] 惠建斌, 郑文婧. 氨碱法制碱工业中的资源瓶颈与多联产技术开发[J]. 纯碱工业, 2019(3):3-7.
[9] Kasikowski T, Buczkowski R, Lemanowska E. Cleaner production in the ammonia-soda industry:an ecological and economic study[J]. Journal of Environmental Management, 2004,73(4):339-356.
[10] 惠建斌, 郑文婧, 赵润东. 氨碱法制碱中Ca/C/N等元素零排放新工艺探讨[J]. 纯碱工业, 2018(5):3-6.
[11] 鲍雷雷, 郭志坤, 张克强, 等. 纯碱行业发展情况及未来走势分析[J]. 化工管理, 2018(13):6.
[12] 姜小毛. 氯化铵母液连续分解装置研制成功[J]. 中国石油和化工, 2017(2):68.
[13] 刘润静, 张振昌, 胡永琪, 等. 高浓度氯化铵分解生成氨联产固体氯化钙的研究[J]. 纯碱工业, 2014(5):11-14.
[14] 曾凤春. 氯化铵转化技术现状及展望[J]. 无机盐工业, 2009,41(9):1-3.
[15] 刘立平. 氯化镁行业发展现状及趋势分析[C]// 2019年全国镁化合物行业年会暨调结构、促融合、增效益、可持续发展论坛论文集.石家庄:中国无机盐工业协会镁化合物分会, 2019: 119-122.
[16] 邱琦, 高春娟, 张琦, 等. 苦卤制备氯化钾、氯化镁工艺技术研究[J]. 辽宁化工, 2019,48(12):1263-1264.
[17] 叶大伦, 胡建华. 实用无机物热力学数据手册[M].2版. 北京: 冶金工业出版社, 2002.
[18] 陈中芹. 菱镁制品吸潮返卤影响的研究[J]. 辽宁化工, 2011,40(10):1022-1023,1048.
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