Analysis of a methanol synthesis reactor operating in non-isothermal cooling conditions

IF 7.7 2区 工程技术 Q1 CHEMISTRY, APPLIED
Grazia Leonzio , Giovanni Manenti , Marcello Maria Bozzini , Roberto Baratti , Flavio Manenti
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引用次数: 0

Abstract

Productivity and energy efficiency of industrial units for methanol synthesis strongly depend on adopted configuration for the synthesis reactor(s). Several configurations are described in literature and are commercially available.
In this work, a reactor configuration of shell-and-tube type, with catalyst on tube-side and coolant on shell-side, and with the shell-side split into two zones (double-zone methanol reactor - DZMR) is described. Such a DZMR allows installing shell-side cooling conditions that are overall non-isothermal; specifically, one shell-side zone operates in isothermal conditions whereas the other shell-side zone operates in non-isothermal conditions. Accordingly, the present work analyzes and compares the DZMR productivity under different shell-side operating conditions, with the thermal oil used as shell-side coolant. Analysis and comparison are carried out by modelling a small-scale DZMR: productivity, yield and carbon conversion are evaluated by means of process modelling in Aspen Plus software.
Results show that a DZMR with overall non-isothermal shell-side cooling conditions has a high efficiency: methanol productivity (328 tons of MeOH per year), yield and conversion (41 %) are the highest, energy consumption is the lowest and required coolant flowrate is the smallest. The DZMR here described realizes to be operationally flexible and more efficient than conventional shell-and-tube type isothermal reactors.
甲醇合成反应器在非等温冷却条件下的运行分析
甲醇合成工业装置的生产效率和能源效率在很大程度上取决于合成反应器的配置。文献中描述了几种配置,并且可以在市场上买到。本文介绍了一种壳管式反应器结构,催化剂在管侧,冷却剂在壳侧,壳侧分为两区(双区甲醇反应器- DZMR)。这样的DZMR允许安装总体非等温的壳侧冷却条件;具体来说,一个壳侧区在等温条件下工作,而另一个壳侧区在非等温条件下工作。在此基础上,对采用导热油作为壳侧冷却剂的DZMR在不同工况下的产能进行了分析和比较。通过对小型DZMR进行建模进行分析和比较:利用Aspen Plus软件中的过程建模来评估生产率、产量和碳转化率。结果表明,采用整体非等温壳侧冷却条件的DZMR具有较高的效率:甲醇产率最高(328吨/年),产率和转化率最高(41%),能耗最低,所需冷却剂流量最小。本文所描述的DZMR实现了比传统的管壳式等温反应器操作灵活和效率更高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Fuel Processing Technology
Fuel Processing Technology 工程技术-工程:化工
CiteScore
13.20
自引率
9.30%
发文量
398
审稿时长
26 days
期刊介绍: Fuel Processing Technology (FPT) deals with the scientific and technological aspects of converting fossil and renewable resources to clean fuels, value-added chemicals, fuel-related advanced carbon materials and by-products. In addition to the traditional non-nuclear fossil fuels, biomass and wastes, papers on the integration of renewables such as solar and wind energy and energy storage into the fuel processing processes, as well as papers on the production and conversion of non-carbon-containing fuels such as hydrogen and ammonia, are also welcome. While chemical conversion is emphasized, papers on advanced physical conversion processes are also considered for publication in FPT. Papers on the fundamental aspects of fuel structure and properties will also be considered.
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