USE OF COAL DRYING TO REDUCE WATER CONSUMED IN PULVERIZED COAL POWER PLANTS

Levy, Edward ; Sarunac, Nenad ; Bilirgen, Harun ; Zhang, Wei

Lehigh University

关键词: Blowers;    Efficiency;    Boilers;    Heat Rate;    Cooling Towers;   

DOI  :  10.2172/882433
RP-ID  :  none
RP-ID  :  FC26-03NT41729
RP-ID  :  882433

美国|英语

来源: UNT Digital Library

【 摘 要 】

This is the ninth Quarterly Report for this project. The background and technical justification for the project are described, including potential benefits of reducing fuel moisture using power plant waste heat, prior to firing the coal in a pulverized coal boiler. During this last Quarter, comparative analyses were performed for lignite and PRB coals to determine how unit performance varies with coal product moisture. Results are given showing how the coal product moisture level and coal rank affect parameters such as boiler efficiency, station service power needed for fans and pulverizers and net unit heat rate. Results are also given for the effects of coal drying on cooling tower makeup water and comparisons are made between makeup water savings for various times of the year.