4. Coal Conversion technology to transform coal into gas by Gasification process which can lead to the removal of sulfur dioxide occurred prior to burning out. Burned as fuel or to generate electricity. This technology is expected to be used for the production of electrical energy. Burning coal directly in present It has many advantages over the old system in many respects. The cost for the disposal of low-sulfur and waste disposal are fewer. Removal higher efficiency and less environmental impact. It is also being studied in a condition converting coal Liquefaction. Nearby you have the oil that can be refined.