Preparation and combustion of coal-water fuel from the Sin Pun coal deposit, southern Thailand

Technical Report · Thu May 01 04:00:00 EDT 1997

DOI:https://doi.org/10.2172/574225· OSTI ID:574225

In response to an inquiry by the Department of Mineral Resources in Thailand, the Energy & Environmental Research Center (EERC) prepared a program to assess the responsiveness of Sin Pun lignite to the temperature and pressure conditions of hot-water drying. The results indicate that drying made several improvements in the coal, notably increases in heating value and carbon content and reductions in equilibrium moisture and oxygen content. The equilibrium moisture content decreased from 27 wt% for the raw coal to about 15 wt% for the hot-water-dried (HWD) coals. The energy density for a pumpable coal-water fuel (CWF) indicates an increase from 4500 to 6100 Btu/lb by hot-water drying. Approximately 650 lb of HWD Sin Pun CWF were fired in the EERC`s combustion test facility. The fuel burned extremely well, with no feed problems noted during the course of the test. Fouling and slagging deposits each indicated a very low rate of ash deposition, with only a dusty layer formed on the cooled metal surfaces. The combustor was operated at between 20% and 25% excess air, resulting in a flue gas SO{sub 2} concentration averaging approximately 6500 parts per million.

• Research Organization: North Dakota Univ., Grand Forks, ND (United States). Energy and Environmental Research Center
• Sponsoring Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC (United States)
• DOE Contract Number: FC21-93MC30098
• OSTI ID: 574225
• Report Number(s): DOE/MC/30098--5740; ON: DE97005446
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL DEPOSITS
COAL PREPARATION
COMBUSTION
LIGNITE
MORGANTOWN ENERGY TECHNOLOGY CENTER
RESEARCH PROGRAMS
THAILAND