Partic. vol. 9 no. 4 pp. 432-440 (August 2011)
doi: 10.1016/j.partic.2011.03.008

Dense-phase pneumatic conveying under pressure in horizontal pipeline

Daoye Yang^a,*, Bin Zhou^b, Chuanlong Xu^b, Shimin Wang^b

yangdaoye@163.com

Abstract

The gas/solid flow regime of dense-phase pneumatic conveying of pulverized coal under a pressure of 4.0 MPa in horizontal pipeline 10 mm in diameter, is monitored by electrical capacitance tomography (ECT) using 8 electrodes. To improve the accuracy of the capacitance measurement, an AC-based single-channel capacitance measuring circuit was developed, and a modified iterative Landweber algorithm was used to reconstruct the image. A two-fluid model based on the kinetic theory of granular flow was used to study the three-dimensional steady-state flow behavior of dense-phase pneumatic conveying of pulverized coal.

Graphical abstract

Keywords

Electrical capacitance tomography (ECT); Pneumatic conveying; Dense-phase; Numerical simulation