A new method for calculating time to maximum rate under adiabatic condition

GUO Zichao; HAO Lin; WEI Hongyuan

doi:10.11949/j.issn.0438-1157.20151737

您当前的位置：

首页 >

文章列表页 >

A new method for calculating time to maximum rate under adiabatic condition

更新时间：2025-12-10

- A new method for calculating time to maximum rate under adiabatic condition
- CIESC Journal Issue S1, Pages: 22-27(2016)
- 作者机构：
  
  天津大学化工学院, 天津大学-阿斯利康联合实验室,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151737
  CLC： 642.1
- Online First：31 August 2016，
  
  Published：31 August 2016
- 稿件说明：
移动端阅览
GUO Zichao, HAO Lin, WEI Hongyuan. A new method for calculating time to maximum rate under adiabatic condition[J]. CIESC Journal, 2016, (S1): 22-27.
DOI：

GUO Zichao, HAO Lin, WEI Hongyuan. A new method for calculating time to maximum rate under adiabatic condition[J]. CIESC Journal, 2016, (S1): 22-27. DOI： 10.11949/j.issn.0438-1157.20151737.

摘要

最大反应速率到达时间（TMRad）是物质热危险评价中一个非常重要的参数，常用于评估绝热条件下物质或混合物发生分解反应的可能性。传统的TMRad计算方法需要计算物质或混合物的分解动力学参数和热力学参数，如指前因子、活化能、反应级数和分解反应热。为了使用绝热加速量热仪（ARC）计算TMRad，需要用测得物质或混合物完整的放热曲线来计算动力学参数。然而，在实际的测量中，由于放热机理复杂或实验安全的考虑，常常难以得到完整的放热曲线，即没有放热终点。在这种情况下，传统的TMRad计算方法就失效了。因此，提出一种可以适用于这种情况计算TMRad的新方法。实验验证结果表明这种方法亦可以用于计算拥有完整放热曲线的TMRad。

Abstract

Time to maximum rate under adiabatic condition (TMRad) is a widely-used parameter for evaluation of the probability of decomposition reactions of substances or reactive mixtures under adiabatic conditions. The traditional method for calculation of TMRad necessitates the kinetics and thermodynamics of the decomposition reactions

such as pre-exponential factor

activation energy

reaction order and decomposition enthalpy. To calculate the TMRad using accelerating rate calorimeter (ARC)

a whole thermal curve including both onset decomposition temperature and final temperature is required. However

due to the complexity of reaction mechanism or safe operation of calorimetric experiment

the final temperature is often unavailable

meaning the traditional method is in failure. Therefore

to solve this problem

this paper proposes a new method for calculating TMRad

which is based on the assumption that the consumption of reactants is negligible within a narrow temperature range relative to the whole exothermic curve. Moreover

the experiment results also prove the flexibility of this new method to exothermic curve including final temperature.

关键词

Keywords

references

Views

525

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Calculate time to maximum rate under adiabatic condition by numerical calculation method

Prediction model for the process of jet fire induced by the leakage of high-pressure hydrogen storage and transportation facilities and its validation

Failure analysis of weak connection structure of vaulted oil tank under fire condition

Thermodynamics analysis of in-container self-propagating high-temperature synthesis immobilization process using numerical simulation

Research progress of chemical process stability analysis

Related Author

Yi ZHU

Hao WANG

Liping CHEN

Zichao GUO

Zhongqi HE

Wanghua CHEN

Zhenhua WANG

Juncheng JIANG

Related Institution

Department of Safety Engineering, School of Chemical Engineering, Nanjing University of Science and Technology

College of Safety Science and Engineering, Nanjing Tech University

Fire Science and Engineering Institute, Nanjing Tech University

School of Environmental and Safety Engineering, Changzhou University

School of Chemical Engineering, China University of Petroleum

⁰