CO2 Capture Using Chemical Looping Combustion from a Biomass-Derived Syngas Feedstock: Simulation of a Riser–Downer Scaled-Up Unit,Industrial & Engineering Chemistry Research

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CO2 Capture Using Chemical Looping Combustion from a Biomass-Derived Syngas Feedstock: Simulation of a Riser–Downer Scaled-Up Unit
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-02-03 , DOI: 10.1021/acs.iecr.9b05753
Imtiaz Ahmed ₁ , Hugo de Lasa ₁

Affiliation

This simulation study demonstrates the scalability of chemical looping combustion (CLC) to achieve efficient capture of biomass-derived CO₂. To achieve this, a 3D computational particle fluid dynamics (CPFD) simulation is implemented using Barracuda software. The process considers syngas from biomass gasification as a fuel as well as a highly performing nickel-based oxygen carrier (HPOC). A recently developed solid-state model is used to describe the HPOC CLC kinetics. The proposed CLC system includes two interconnected reactors: (a) a riser air reactor and (b) a downer fuel reactor. An oxygen carrier is circulated in a controlled manner via a newly implemented L-type loop seal, which is operated with an air pulse device. CPFD models are considered to assess the CLC unit performance. The CPFD simulation demonstrates that a 100 kW CLC reactor yields a 92% CO₂ capture in both 10 and 12 m downer using a single unclustered and clustered particle models, respectively.

中文翻译：

使用生物质衍生的合成气原料进行化学循环燃烧捕集CO ₂：上升-下降放大装置的模拟

这项模拟研究证明了化学循环燃烧（CLC）的可扩展性，可以有效地捕获生物质衍生的CO ₂。为此，使用梭子鱼软件实现了3D计算粒子流体动力学（CPFD）仿真。该工艺将来自生物质气化的合成气作为燃料以及高性能的镍基氧气载体（HPOC）。最近开发的固态模型用于描述HPOC CLC动力学。拟议的CLC系统包括两个相互连接的反应堆：（a）立式空气反应堆和（b）立式燃料反应堆。氧气载体通过新实施的L型回路密封以受控方式循环，该L型回路密封由空气脉冲装置操作。考虑使用CPFD模型来评估CLC单元的性能。CPFD模拟表明，一个100 kW的CLC反应器可产生92％的CO ₂ 分别使用单个非聚类和聚类的粒子模型在10 m和12 m的唐纳河中捕获。

更新日期：2020-02-03

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