SBIR Phase I: On-Line Measurement of Particle Size Distributions Using Photon Migration

* 9761330雷诺兹 该小型企业创新研究第一阶段项目将开发一种基于光子迁移原理的自校准光学传感器，用于在线测量颗粒或液滴尺寸分布以及颗粒和分散相过程的体积分数。它建议建立一个原型仪器在工业环境中使用。该新方法包括监测光的时间依赖性传播特性，因为它通过高固体的工艺流多次散射。该技术不需要外部校准或经验导出的校准因子。该技术的可行性已得到验证。 而颗粒工艺占美国的70%到80%。在基于化学的工业中，对于浓缩工艺流中的颗粒尺寸和体积分数的关键工艺参数，没有在线测量可用于实现控制和有效优化。光子迁移技术在乳液加工（包括聚合）、结晶、陶瓷加工和生物技术中具有直接的工业应用。 ***

*** 9761330 Reynolds This Small Business Innovation Research Phase I project will develop a self-calibrating optical sensor based on principles of photon migration for on-line measurements of particle or droplet size distributions and volume fraction for particulate and dispersed phase processes. It proposes to build a prototype instrument for use in an industrial setting. The novel approach consists of monitoring the time-dependent propagation characteristics of light as it multiply scatters through a process stream of high solids. The technique does not require external calibration or empirically derived calibration factors. Feasibility of this technology has been demonstrated. While particulate processes comprise seventy to eighty percent of the US. chemical-based industry, no on-line measurements are available for the critical process parameters of particle size and volume fraction in concentrated process streams to enable control and effective optimization. The photon migration technique has immediate industrial applications in emulsion processing (including polymerization), crystallization, ceramic processing, and biotechnology. ***