Conceptual design of a fixed bed N2O decomposition reactor with a heat pipe heat exchanger

IF 1.6 4区 工程技术 Q3 Chemical Engineering International Journal of Chemical Reactor Engineering Pub Date : 2024-04-02 DOI:10.1515/ijcre-2023-0227
Dong He, Xiaoyue Bai, Hanzhong Tao, Yanna Li, Shuo Lin
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Abstract

This paper introduces a novel process for decomposing N2O through interstage cooling utilizing a heat pipe heat exchanger. The reactor design involves segmenting the fixed bed reactor into multiple layers and integrating heat pipe heat exchangers between these layers to efficiently dissipate the high heat generated by the upper fixed bed reactor. This innovative approach facilitates the direct decomposition of N2O feedgas with high concentrations, obviating the need for gas dilution. The study conducted in this paper employed Fluent and ASPEN PLUS to investigate N2O decomposition with interstage cooling using heat pipe heat exchangers, as well as decomposition after dilution. A comparison between the two methods was made based on catalyst dosage, temperature uniformity, and reactor energy consumption. The results demonstrate that the proposed method for N2O decomposition via interstage cooling with a heat pipe heat exchanger is a viable option, offering the desired temperature control and enhanced efficiency. Furthermore, this reactor design effectively reduces both catalyst usage and energy consumption, providing substantial advantages over traditional approaches.
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带有热管热交换器的固定床 N2O 分解反应器的概念设计
本文介绍了一种利用热管热交换器通过级间冷却分解 N2O 的新型工艺。反应器的设计包括将固定床反应器分割成多层,并在这些层之间集成热管热交换器,以有效散发上层固定床反应器产生的高热量。这种创新方法有利于直接分解高浓度的 N2O 原料气体,而无需进行气体稀释。本文采用 Fluent 和 ASPEN PLUS 对使用热管热交换器进行级间冷却的 N2O 分解以及稀释后的分解进行了研究。根据催化剂用量、温度均匀性和反应器能耗对两种方法进行了比较。结果表明,所建议的通过热管热交换器进行级间冷却的 N2O 分解方法是一种可行的选择,既能提供理想的温度控制,又能提高效率。此外,这种反应器设计还能有效减少催化剂用量和能耗,与传统方法相比具有很大优势。
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来源期刊
CiteScore
2.80
自引率
12.50%
发文量
107
审稿时长
3 months
期刊介绍: The International Journal of Chemical Reactor Engineering covers the broad fields of theoretical and applied reactor engineering. The IJCRE covers topics drawn from the substantial areas of overlap between catalysis, reaction and reactor engineering. The journal is presently edited by Hugo de Lasa and Charles Xu, counting with an impressive list of Editorial Board leading specialists in chemical reactor engineering. Authors include notable international professors and R&D industry leaders.
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