Study on Refining CL-20 by Micro-reactor Technology
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摘要:采用微反应器技术细化CL-20，通过流体混合数值模拟研究微反应器的混合效果，确定微反应器的优化结构；通过实验研究溶剂乙酸乙酯和非溶剂正庚烷流速比、温度以及CL-20浓度对CL-20晶体形貌、晶型和粒度大小的影响。结果表明：在T型混合器的基础上增加4个圆腔，溶剂与非溶剂的混合效果更佳；在CL-20浓度为7.0%，溶剂流速0.2mL/min，非溶剂流速2mL/min，活性剂浓度2%，收集装置加热温度60℃时，重结晶CL-20的晶型为ε型，平均粒径为6.92μm，且颗粒均匀。
Abstract:The micro reactor technology was used to refine CL-20, the mixing effect of micromixer was studied by numerical simulation of fluid mixing, and the optimal structure of micro-reactor was determined. Then ethyl acetate was used as solvent and n-heptane as nonsolvent, and the effects of solvent to non-solvent flow rate ratio, temperature and CL-20 concentration on the morphology, crystal form and particle size of CL-20 were studied experimentally. The results show that the mixing effect of solvent and nonsolvent is better by adding four circular cavities on the basis of T-mixer. When the concentration of CL-20 is 7.0%, the flow rate of solvent is 0.2mL/min, the flow rate of nonsolvent is 2mL/min, the concentration of active agent is 2%, and the temperature of the collecting device is 60℃, the crystal form of recrystallized CL-20 is ε type, the average particle size is 6.92μm, and the particles are uniform.
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