SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2013, Vol. 21 ›› Issue (4): 442-446.DOI: 10.1016/S1004-9541(13)60490-5

• ENERGY, RESOURCES AND ENVIRONMENTAL TECHNOLOGY • Previous Articles     Next Articles

Nitrosation Reaction Without Nitrogen Oxide Waste Gas Emission and Its Engineering Practice

CHEN Chunguang1,2, FENG Yaqing1, NIU Weiwei3, CHEN Xuexi 4   

  1. 1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2 Huangdao Entry-Exit Inspection and Quarantine Bureau, Qingdao 266555, China;
    3 School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China;
    4 School of Chemical Engineering and Technology, Qingdao University of Science & Technology, Qingdao 266042, China
  • Received:2012-04-24 Revised:2012-11-12 Online:2013-04-26 Published:2013-04-28

Nitrosation Reaction Without Nitrogen Oxide Waste Gas Emission and Its Engineering Practice

陈春光1,2, 冯亚青1, 牛伟玮3, 陈学玺4   

  1. 1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2 Huangdao Entry-Exit Inspection and Quarantine Bureau, Qingdao 266555, China;
    3 School of Polymer Science and Engineering, Qingdao University of Science & Technology, Qingdao 266042, China;
    4 School of Chemical Engineering and Technology, Qingdao University of Science & Technology, Qingdao 266042, China
  • 通讯作者: CHEN Xuexi

Abstract: The gas-liquid phase equilibrium is used in controlling the nitrosation reaction process. Decomposition of nitrous acid and oxidation side reaction are suppressed in a closed reaction system. The system pressure is used as the criterion of the end of reaction, avoiding excessive feeding and reducing the decomposition of nitrous acid. The head space of the reactor is used as the gas buffer, stabilizing the feeding fluctuations and inhibiting the side reaction, decomposition of nitrous acid. Nitrogen oxide concentration is controlled at the minimum level. Thus the zero release of nitrogen oxide waste gas can be achieved without using any absorption process.

Key words: nitrosation, nitrogen oxides, phase equilibrium

摘要: The gas-liquid phase equilibrium is used in controlling the nitrosation reaction process. Decomposition of nitrous acid and oxidation side reaction are suppressed in a closed reaction system. The system pressure is used as the criterion of the end of reaction, avoiding excessive feeding and reducing the decomposition of nitrous acid. The head space of the reactor is used as the gas buffer, stabilizing the feeding fluctuations and inhibiting the side reaction, decomposition of nitrous acid. Nitrogen oxide concentration is controlled at the minimum level. Thus the zero release of nitrogen oxide waste gas can be achieved without using any absorption process.

关键词: nitrosation, nitrogen oxides, phase equilibrium