Chen Feif an‚ You Zheng‚ L i Jian

（Deptartment of Precision Instruments，Tsinghua University‚Beijing 100084China）

Abstract

A novel measurememt method of density and distribution for sub－micron particulate in the gas－solid two－phase flow is proposed‚which is based on the laser scatter．It is suitable for the stream identity analysis such as the substance composition and density distribution．As a sample‚a smoke soot density measure device based on this principle is designed‚and its realization in engineering is also introduced in this paper．This principle and device can be popularized in other particulate density analysis for gas－solid two－phase flow in chemistry industry‚such as oil‚medicine‚etc．

Keywords：gas－solid two－phase flow；particulate density；laser scatter

DOI：10.13732/j.issn.1008-5548.1999.06.005