Fluidized bed reactors for solid-gas thermochemical energy storage concepts - Modelling and process limitations

被引：47

作者：

Flegkas, S. ^{[1
]}

Birkelbach, F. ^{[1
]}

Winter, F. ^{[2
]}

Freiberger, N. ^{[3
]}

Werner, A. ^{[1
]}

机构：

[1] TU Wien, Inst Energy Syst & Thermodynam, Getreidemarkt 9, A-1060 Vienna, Austria

[2] TU Wien, Inst Chem Environm & Biol Engn, Getreidemarkt 9, A-1060 Vienna, Austria

[3] RHI AG, Magnesitstr 2, A-8700 Leoben, Austria

来源：

ENERGY | 2018年 / 143卷

关键词：

Thermochemical energy storage; Fluidized bed reactors; Magnesium oxide/hydroxide; Solid-state reaction kinetics; CHEMICAL HEAT-PUMP; SOLAR THERMAL-ENERGY; OF-THE-ART; MAGNESIUM-HYDROXIDE; COGENERATION SYSTEM; EXPANDED GRAPHITE; PERFORMANCE; PRESSURES; CANDIDATE; CHLORIDE;

D O I：

10.1016/j.energy.2017.11.065

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermal energy storage (TES) systems show high potential to reduce the dependency on fossil fuels and to accomplish the shift towards sustainable energy systems. Thermochemical energy storage (TCES) provides significant advantages compared to other TES systems, including nearly loss-free storage at ambient pressure and temperature, high energy density and site independence. This paper provides a method to model fluidized bed reactors (FBR) for solid-gas TCES concepts based on solid-state kinetics and fluidization hydrodynamics using the reaction couple MgO - Mg(OH)(2) for demonstration. Also a process to integrate such systems into industrial applications is proposed. Furthermore the supply of steam during the heat release process, which constitutes a major drawback of the system, is quantified in order to assess the limitations of such a process. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：615 / 623

页数：9

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