Numbered-up gas-liquid micro/milli channels reactor with modular flow distributor
Numbered-up gas-liquid micro/milli channels reactor with modular flow distributor
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DOI：
10.1016/j.cej.2012.07.028
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发表时间：
2012-10
影响因子：
15.1
通讯作者：
Ma’moun Al-Rawashdeh;F. Yu;T. A. Nijhuis;E. Rebrov;V. Hessel;J. Schouten
中科院分区：
文献类型：
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作者：
Ma’moun Al-Rawashdeh;F. Yu;T. A. Nijhuis;E. Rebrov;V. Hessel;J. Schouten
微反应器中的气液处理仍然主要局限于实验室规模，这是因为进行具有均匀流量分布的充分编号所需的复杂性和费用。本文介绍了适用于Kg/h生产能力的微反应器内多相(气液)流动的计数方法。基于屏障通道的概念，设计和制造了能提供小于10%的流动不均匀性的屏障微/毫升反应器(BMMR)。BMMR由8个平行通道组成，均在泰勒流状态下运行，液体流速高达150ml/分钟。通过两个方面的研究，报道了流量分配的质量。第一个方面是不同粘度、表面张力和流速的影响。第二个方面是模块化的影响，通过测试三种不同的反应通道类型：(1)用不锈钢制成的方形通道，(2)用玻璃板制成的方形通道，(3)用不锈钢制成的圆形通道(毛细管)。此外，在段塞、气泡长度和气泡产生频率方面，将BMMR与单通道的BMMR进行了比较。研究结果为进一步实现微反应器内多相流的规模化生产奠定了基础。
Gas–liquid processing in microreactors remains mostly restricted to the laboratory scale due to the complexity and expenditure needed for an adequate numbering-up with a uniform flow distribution. Here, the numbering-up is presented for multi-phase (gas–liquid) flow in microreactor suitable for a production capacity of kg/h. Based on the barrier channels concept, the barrier-based micro/milli reactor (BMMR) is designed and fabricated to deliver flow non-uniformity of less than 10%. The BMMR consists of eight parallel channels all operated in the Taylor flow regime and with a liquid flow rate up to 150mL/min. The quality of the flow distribution is reported by studying two aspects. The first aspect is the influence of different viscosities, surface tensions and flow rates. The second aspect is the influence of modularity by testing three different reaction channels type: (1) square channels fabricated in a stainless steel plate, (2) square channels fabricated in a glass plate, and (3) circular channels (capillaries) made of stainless steel. Additionally, the BMMR is compared to that of a single channel regard the slug and bubble lengths and bubble generation frequency. The results pave the ground for bringing multi-phase flow in microreactor one step closer for large scale production via numbering-up.