粉状物料气力输送的研究

Research on Pneumatic Transportation of Powdered Materials

摘要

粉状物料气力输送是工业粉体转运的关键技术，属于复杂气固两相流运动体系。本文阐述了粉状物料气力输送的工作原理与系统构成，依据固气比、气流压力、动力源三大标准划分输送类型并对比各类输送方式优劣，分析了物料特性、输送参数等主要影响因素，从数值模拟和实验研究现状出发，提出了相应的优化建议。密相输送同智能化控制相结合，是技术发展的主要趋向，可为粉体气力输送工程设计、参数调试及技术迭代提供理论参考与实践指导。

Abstract

Pneumatic conveying of powdered materials is a key technology in industrial powder transportation, representing a complex two-phase gas-solid flow system. This paper elucidates the working principles and system architecture of pneumatic conveying, classifies conveyance modes based on three criteria—solid-to-gas ratio, airflow pressure, and power source—and compares their respective advantages and limitations. It analyzes major influencing factors such as material properties and conveying parameters, and proposes optimization recommendations grounded in numerical simulations and experimental studies. The integration of dense-phase conveying with intelligent control represents a primary trend in technological development, providing theoretical references and practical guidance for engineering design, parameter optimization, and technical advancement in powder pneumatic conveying systems.

关键词

粉状物料 / 气力输送 / 气固两相流 / 密相输送

Key words

powdered materials / pneumatic conveying / gas-solid two-phase flow / dense phase conveying

参考文献

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