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新型工业微反应器的开发研究

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针对目前工业领域的微反应器存在处理能力小、设备耐压耐温能力有限、紧凑度低和流速低等缺陷,开发了一种应用于特定领域的新型工业微反应器,"蚀刻+扩散焊"工艺使其具有极好的耐压耐温性能,制造工艺使设备高度紧凑且内部通道灵活多变,在特定的化工工艺中具有巨大的优越性.针对新型工业微反应器的开发提出了拱形混合结构(AFMS),矩形混合结构(RFMS)和碰撞流混合结构(CFMS)3种混合结构,采用数值模拟方法研究其混合性能.结果表明,混合效果随着雷诺数的增加而增加,在湍流条件下可以获得理想的混合效果;与AFMS相比,RFMS和CFMS在一定程度上可以促进混合过程,但会带来较大的压力损失,混合指数与压降比进一步验证了AFMS是最佳结构;当100<Re<1 000时,AFMS的混合指数在出口处为0.2~0.6,将AFMS后的直通道改为Zig-zag通道,混合指数可以达到0.94,Zig-zag通道显著改善了混合效果,而无明显的压力损失.研究结果为新型微反应器原型的结构设计提供重要参考.
Development and research of a novel industrial scale microreactor
A new type of industrial microreactor for special field was developed to address the shortcomings of low processing capacity,limited equipment pressure and temperature resistance,low compactness,and low flow velocity in the current industrial field,the"etching and diffusion welding"process makes it have excellent pressure and temperature resistance performance.The manufacturing process makes the equipment highly compact and the internal channels flexible,which has great advantages in specific chemical processes.Three hybrid structures,i.e.AFMS,RFMS and CFMS were designed for the novel industrial scale microreactor.Numerical investigation was conducted to evaluate its mixing performance.Results show that mixing effect increases with the Reynolds number,and satisfactory mixing effect is achieved under turbulent condition.RFMS and CFMS can promote mixing process to some extent compared to AFMS,however,large pressure loss will occur.The ratio of mixing index to pressure drop further indicates that AFMS is the optimal structure for microreactor.When the Reynolds number is between 100 and 1 000,mixing index of AFMS is only 0.2~0.6 at the exit.mixing index of AFMS can reach 0.94 by replacing straight channel with zigzag channel without apparent pressure penalty.The research results provide important reference for the structural design of the novel microreactor prototype.

novel microreactormixing indexpressure dropnumerical simulation

张秋双、陈永东、韩冰川、于改革

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合肥通用机械研究院有限公司,合肥 230031

新型微反应器 混合指数 压降 数值模拟

安徽省重点研究和开发计划基础领域项目合肥通用机械研究院有限公司博士科技基金项目

2023Z040200202020011748

2024

流体机械
中国机械工程学会

流体机械

CSTPCD北大核心
影响因子:1.418
ISSN:1005-0329
年,卷(期):2024.52(2)
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