Experimental and CFD studies on collection efficiency of separator with arc settlers of fluidized bed catalytic reactor

IF 3.8 3区 工程技术 Q3 ENERGY & FUELS Chemical Engineering and Processing - Process Intensification Pub Date : 2024-08-27 DOI:10.1016/j.cep.2024.109959
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Abstract

Separation of catalyst dust from gas in a fluidized bed reactor is an important process. A new solid-gas separator with arc settlers was developed, in which a stable wave flow pattern of the dusty gas flow is formed. The model was based on the RANS approach using the Reynolds Stress Model for the turbulence closure and the Discrete Phase Model. Validating the simulation results with the test data showed good convergence, no more than 6% in the pressure drop and less than 15.5% in collection efficiency at different inlet gas velocities. The CFD study revealed that with a dusty gas inlet velocity of no more than 1 m/s and a catalyst particle larger than 20 μm, efficiency close to 100% is achieved with a pressure drop of less than 60 Pa. Maximum efficiency is achieved when the number of rows of the arc settlers with 40 mm diameter is 8.

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流化床催化反应器弧形沉降器分离器收集效率的实验和 CFD 研究
将流化床反应器中的催化剂粉尘从气体中分离出来是一项重要的工艺。我们开发了一种带有电弧沉降器的新型固气分离器,在该分离器中,含尘气流形成了稳定的波流模式。该模型基于 RANS 方法,使用雷诺应力模型进行湍流闭合和离散相模型。将模拟结果与测试数据进行验证,结果显示收敛性良好,在不同的入口气体速度下,压降不超过 6%,收集效率低于 15.5%。CFD 研究表明,当含尘气体入口速度不超过 1 m/s、催化剂颗粒大于 20 μm 时,效率接近 100%,压降小于 60 Pa。当直径为 40 毫米的弧形沉降器的排数为 8 时,效率达到最高。
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来源期刊
CiteScore
7.80
自引率
9.30%
发文量
408
审稿时长
49 days
期刊介绍: Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.
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