Coal combustion and ash collections in high temperature flow

Author

Goldman, Y. ; Hazanov, Z. ; Timnat, Y.M.

Author_Institution

Technion, Haifa, Israel

fYear

1989

fDate

6-11 Aug 1989

Firstpage

2517

Abstract

An experimental and theoretical study of mechanisms governing coal particle combustion and ash separation is presented. A high-temperature countercurrent combustor and an inertial separator were studied for a range of conditions in which sticking ash appeared. The performance of a rotational-flow combustor and a multicyclone-type ash separator were strongly influenced by gas scavenging. Changes in the construction of the systems improved efficiency and reliability. A theoretical model for the gas phase using the two-equation turbulence approach was solved for a domain corresponding to sophisticated configurations. The effects of heterogeneous combustion and of particle drag are superimposed on the aerodynamics

Keywords

air pollution detection and control; coal; combustion; thermal power stations; aerodynamics; ash collections; coal particle combustion; efficiency; gas scavenging; heterogeneous combustion; high-temperature countercurrent combustor; inertial separator; multicyclone-type ash separator; particle drag; reliability; rotational-flow combustor; sticking ash; two-equation turbulence; Aerodynamics; Ash; Ceramics; Combustion; Cooling; Cyclones; Filters; Fluid flow; Insulation; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety

Conference_Location

Washington, DC

Type

conf

DOI

10.1109/IECEC.1989.74828

Filename

74828