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吸附丙酮、环己烷和乙酸丁酯后煤基活性炭的热风险研究

Study on Thermal Risk of Coal-Based Activated Carbon after Adsorbing Acetone, Cyclohexane, and Butyl Acetate.

作者信息

Wang Lanyun, Fan Qinghui, Wang Yan, Xu Yongliang, Li Yao, Zheng Yanmei, Feng Xiaodong, Zhang Kun

机构信息

School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China.

Collaborative Innovation Center for Coal Safety Production & High-Efficient-Clean Utilization for Coal by Provincial and Ministerial Co-Construction, Jiaozuo 454003, China.

出版信息

ACS Omega. 2023 Sep 11;8(37):33883-33890. doi: 10.1021/acsomega.3c04577. eCollection 2023 Sep 19.

DOI:10.1021/acsomega.3c04577
PMID:37744836
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10515395/
Abstract

Combustion and explosion accidents of the mixture may occur after the adsorption of volatile organic compounds (VOCs) by coal-based activated carbon (CBAC). It is of great significance to explore the oxidation and combustion performance of CBAC before and after adsorbing VOCs in order to prevent the reoccurrence of fire and explosion. Based on the CBAC sample commonly used in industrial production, three types of CBAC samples after adsorbing VOCs, i.e., acetone, cyclohexane, and butyl acetate, were prepared. The oxidation and combustion characteristics of the samples before and after adsorbing VOCs are measured and analyzed by thermal analyzer and cone calorimeter. Thermal analysis results indicate that during the oxidation process, the VOCs in the adsorbed samples will burn in the early stage, generating amounts of heat which may accelerate the oxidation and combustion of CBAC. According to the combustion performance experiments by cone calorimeter, it is also found that the combustion rate of CBAC after adsorbing VOCs is significantly enhanced. The time to ignition is shortened, the heat release rate becomes larger, and the time to reach the peak of heat release rate is significantly moved forward. In addition, the CO yield of the adsorbed sample is significantly improved. In general, VOC adsorption in CBAC can promote oxidation reactions and may result in an enhanced combustibility of CBAC.

摘要

煤基活性炭（CBAC）吸附挥发性有机化合物（VOCs）后，混合物可能会发生燃烧和爆炸事故。为防止火灾和爆炸再次发生，研究CBAC吸附VOCs前后的氧化和燃烧性能具有重要意义。基于工业生产中常用的CBAC样品，制备了吸附丙酮、环己烷和乙酸丁酯三种VOCs后的CBAC样品。采用热分析仪和锥形量热仪对吸附VOCs前后样品的氧化和燃烧特性进行了测定和分析。热分析结果表明，在氧化过程中，吸附样品中的VOCs会在早期燃烧，产生大量热量，可能加速CBAC的氧化和燃烧。根据锥形量热仪的燃烧性能实验，还发现吸附VOCs后的CBAC燃烧速率显著提高。点火时间缩短，热释放速率增大，达到热释放速率峰值的时间显著提前。此外，吸附样品的CO产率显著提高。总体而言，CBAC中VOC的吸附可促进氧化反应，并可能导致CBAC的可燃性增强。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a57/10515395/2776bdb007c7/ao3c04577_0011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a57/10515395/2776bdb007c7/ao3c04577_0011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a57/10515395/c16709f3b67b/ao3c04577_0002.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a57/10515395/07ddaaee99fc/ao3c04577_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a57/10515395/b062b723aa39/ao3c04577_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a57/10515395/22cf7833e56a/ao3c04577_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a57/10515395/3bb03cdbde09/ao3c04577_0008.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2a57/10515395/2776bdb007c7/ao3c04577_0011.jpg

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本文引用的文献

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