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RESEARCH PAPERS: Gas Turbines: Industrial and Cogeneration

Ash Deposition in a Wood-Fired Gas Turbine

[+] Author and Article Information
K. W. Ragland, M. K. Misra, D. J. Aerts, C. A. Palmer

Department of Mechanical Engineering, University of Wisconsin—Madison, Madison, WI 53706

J. Eng. Gas Turbines Power 117(3), 509-512 (Jul 01, 1995) (4 pages) doi:10.1115/1.2814124 History: Received December 01, 1994; Online November 19, 2007

Abstract

A small four-stage gas turbine was directly fired with woodchips using a novel downdraft, gravel-bed combustor for a total 250 hours of tests. The average turbine blockage due to deposits was 0.19 percent per hour. The composition of deposits was studied using plasma emission spectroscopy and x-ray diffraction. The main constituents of the deposits were CaO, MgO, and K2 SO4 . The deposits contained 5 to 15 percent potassium and 0.5 to 3 percent sulfur.

Copyright © 1995 by The American Society of Mechanical Engineers
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