Sub Bituminous Coal Blended Analysis

Abstract

The purpose of the study is to examine the blended coal specification which was selected as a main fuel in thermal coal power plant. Due to limited preferred coal and designed coal to the thermal power plant specification, the coal blending facilities was carried out. However, before firing the blended coal the coal specification must be determine to predict the coal performances and characteristics. Having said that, the chemical analyses and testing of a coal sample are generally done at the first stage at off-site in a laboratory. Therefore, the quality and rank for the blended coal with its intrinsic characteristics between two types of sub-bituminous coal were evaluate first. The study also presents the ash analysis for blended sub bituminous coal in prediction for slagging and fouling affects in the boiler furnace. The results show, the coal blended specification by looking at the slagging index and fouling index which is categorize at the same level, medium. Summaries of the sub bituminous; coal medium calorific value, moderate moisture content, high HGI, low ash content, moderate fuel ratio, medium Nitrogen content, moderate ash fusion temperature, low content of SiO₂ and moderate content of total Sulphur.