Reaction kinetics of sodium nitrite and ammonium chloride system considering conversion rate

被引：0
|
作者：
Zhan Y. [1 ,2 ]
Luo M. [1 ,2 ]
Fu C. [3 ]
Liu J. [2 ]
机构：
[1] Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum (East China)), Ministry of Education, Qingdao
[2] School of Petroleum Engineering in China University of Petroleum (East China), Qingdao
[3] CNPC Offshore Engineering Company Limited, Qingdao
来源：
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | 2023年 / 47卷 / 03期
关键词：
conversion rate; hydrogen ion concentration range; reaction kinetic equation; sodium nitrite and ammonium chloride system;
D O I：
10.3969/j.issn.1673-5005.2023.03.020
中图分类号：
学科分类号：
摘要：
It is difficult to predict the heat/ nitrogen generation of NaNO2 / NH4Cl system because the reactant conversion rate is not considered in traditional reaction kinetic equation. The H+ concentration range, reaction conversion rate and its changeable rule for nitrogen generation reaction were investigated by experimental analysis method. The influence degree of each factor was studied by grey correlation analysis. The parameters of reaction kinetic equation introduced by reactant conversion were calculated by the Newton-Raphson method, through which the prediction method of the heat/ nitrogen generation reaction were discussed. It is found that the H+ concentration range for nitrogen production of NaNO2 / NH4Cl system is cH+≤ 0. 0225 mol/ L(or pH≥1. 65). And the reactant conversion rate increases with increasing of reactant, H+ concentration and temperature. The correlation between reactant conversion and reactant concentration is the strongest and reaches 0. 8. The reaction kinetic equation with reactant conversion is ddηt = 4. 74×104e-3389/ Tc1H+545 c10. 346(1-η)2. 346, or (1-η1.)346-1. 346-1 = 4. 74× 104e-3389/ Tc1H+545c10. 346t, η<1, which is effective and convenient to predict the heat/ gas generation reaction status. © 2023 University of Petroleum, China. All rights reserved.
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页码：173 / 180
页数：7
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