Some Notes on Dust-Sampling Equipment and Technique

Abstract
Battelle was introduced to the problem of dust sampling in connection with research on the combustion of pulverized coal 20 years ago. The special techniques and equipment needed for stack sampling were first developed in connection with a research investigation on spreader stokers. Subsequently, it has been elaborated and refined in various research investigations where dust measurements were needed. The equipment described has been used for dust sampling of flue gas from spreader stokers, pulverized-coal burners, and locomotives and covers a wide range of sizes of plants. This paper summarizes the results of the work at Battelle, and is presented in the hope that others may be helped by a study of this experience. It is also hoped that desirable modifications in the equipment or technique may be suggested by those reading this paper.

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