Coal gasification technology is vital for making coal cleaner and more efficient for use. The study examined how different types of coal affect gasification and how various techniques can adapt. The research shows that different coal types and gasification methods have driven the progress of this technology. Moving away from fixed beds, processes like entrained-flow and fluidized bed gasification are becoming more popular. Selecting the right gasifier depends on coal properties and advantages of the furnace. It's essential to consider the strengths and weaknesses of each gasification method when choosing the best fit for the coal quality. Researchers suggest developing pressurized gasifiers for higher production capacity, adaptable to different coals, and allowing control over gas composition.