Measurement of radiant heat flux and local particle and gas temperatures in a pulverized coal-fired utility-scale boiler

Abstract

This paper reports experimental measurements of local particle and gas temperatures in a full-scale utility boiler. The boiler is a nominally 80 MW e tangentially-fired unit operated by New York State Electric and Gas. Gas temperatures were measured using a 4-m-long triply-shielded suction pyrometer. Particulate temperature data were collected using a two-color pyrometer. Temperature data were acquired at all levels in the boiler for two different coals. Results show reacting coal particle temperatures above those of the local gases only at selected positions in the burner region. At the top of the radiant section and just above the boiler nose, the particle temperatures were below the local gas temperatures by about 150 K