coal selection criteria for industrial pfbc firing project 3.2 - CCSD
coal selection criteria for industrial pfbc firing project 3.2 - CCSD
coal selection criteria for industrial pfbc firing project 3.2 - CCSD
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LIST OF TABLES<br />
“Coal Selection Criteria <strong>for</strong> Industrial PFBC Firing”<br />
Page<br />
Table 1. Fuels Tested in PTF. 16<br />
1. INTRODUCTION<br />
Coal fed power plants are the most widespread choice to produce electric power, as <strong>coal</strong><br />
deposits are abundant and spread all over the world. In addition, the price of <strong>coal</strong> is<br />
relatively stable. Nevertheless, its carbon dioxide (CO2) emission per unit calorific value<br />
is among the greatest of fossil fuels. Hence it is essential to develop a competent <strong>coal</strong><br />
utilization technology that maximizes the plant thermal efficiency while keeping the<br />
emission of CO2 and other non-environmental friendly emissions (SOx, NOx, etc) at their<br />
minimums.<br />
Pressurized Fluidized Bed Combustion (PFBC) is one of several clean <strong>coal</strong> technologies.<br />
Besides being thermally efficient, it requires low capital and operating costs and has the<br />
potential to be a competitive source of low cost generation when using low to medium<br />
sulfur content <strong>coal</strong>s (Stubington 1997).<br />
However, some problems have arisen in commercial operation of PFBC plant, including<br />
elutriation of unburnt carbon, bed agglomeration, cyclone plugging, and gas turbine blade<br />
and in-bed heat exchanger tube erosion. These are the problems that are associated<br />
mainly with the <strong>coal</strong> used. There<strong>for</strong>e, there is a need to carefully select the <strong>coal</strong> fired to<br />
minimize or eliminate these problems.<br />
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