The article compares how two types of boilers use coal for making electricity. They focused on the environmental impacts of both boilers: one is a boiler that burns coal in a way like sand blowing, and the other uses coal in a different method. The researchers looked at how using these boilers can affect the environment. One key discovery is that countries in Asia are planning to use more coal to make power. To reduce harmful effects, they are trying to improve the ways coal is used and limit pollution from power generation. The study suggests that the choice of boiler technology for coal depends on cost, performance, and environmental concerns. The researchers analyzed the environmental factors of both boilers to understand which might be better for the environment.