Review and analysis of solids friction factor correlations in fluidized dense phase conveying

Abstract

Few researchers have presented solids friction factor correlations for the fluidized dense phase conveying of fine particles or powders. Pressure drop for conveying can be predicted using these correlations. These correlations predict the pressure drop with minimum error margin for a definite pipeline configuration or for some specific types of conveying materials. Few researchers have applied their correlations for different pipeline configurations (of different pipeline lengths or diameters) or different conveying materials to predict the pressure drop. In this paper, different solids friction factor correlations for the fluidized dense phase conveying have been considered which are available in the literature and the behaviour of these correlations have been studied under length scale-up or diameter scale-up conditions. It has been observed that only few correlations exhibit natural pressure drop variation with change in pipeline length or pipeline diameter.

Pneumatic Conveying

“…Hence, developing an effective slug flow system often relies on expensive one-to-one scale trials. Reliance on conveying trials and the development of methods centred around these trials means the field is highly empirical, and much of the theory surrounding dense system design, in general, is from models fitted to collected data (Shijo and Behera 2021). In many cases, design is experiencebased, whereby an existing, reliable slug flow system is duplicated without considering differences in material properties or operating conditions.…”

Optimizing Pressure Prediction Models for Pneumatic Conveying of Biomass: A Comprehensive Approach to Minimize Trial Tests and Enhance Accuracy

“…Numerous researchers have investigated the solids friction factor as a means of predicting pressure drop caused by the presence of solids using the model described above [33][34][35][36][37].…”