STEAM TUBE DRYER PILOT PLANT TEST USING INDONESIAN LOW RANK COALS

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Muhammad Hanif
Takayuki Noguchi

Abstract

Currently, Rembang Power is facing problems of insufficient power generation if fueled by low rank
coals (LRC) with calorific value less than 4200 kcal/kg. Only good quality coals can generate maximum
power, but good quality coals are getting more expensive and difficult to find. Therefore, pre-drying of
LRC is required to improve Rembang power plant efficiency , and maximizes power generation. This
work was aimed to investigate the performance of Steam Tube Dryer (STD) technology using LRCs
from two different mining areas in East Kalimantan. A pilot plant of 100 kg/h of STD technology has
been installed and operated in BPPT's Energy Center Laboratory in Puspiptek, Serpong. The drying
test characteristic and reliability of STD were carried out in continuous operation within 120 hours. The
moisture and particle size distribution of the dried coal products were also evaluated. Characteristics of
the dried coal combustion test were conducted in one-D furnace and boiler simulator. The results
showed that STD could achieve the appropriate drying speed with a significant reduction in total
moisture of coals. It was also proved that STD was highly applicable to dry the Indonesian low rank coal
with good combustion characteristics. Moreover, the test results will supply the engineering data for
STD commercial application in the big-scale power generation.
Keywords: Rembang power generation, steam tube dryer, low rank coal, combustion characteristic,
coal moisture

Article Details

How to Cite
Hanif, M., & Noguchi, T. (2020). STEAM TUBE DRYER PILOT PLANT TEST USING INDONESIAN LOW RANK COALS. Jurnal Energi Dan Lingkungan (Enerlink), 9(1). https://doi.org/10.29122/elk.v9i1.4302
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