Coal gives way to technology

In a bid to make its air cleaner, Beijing has been eliminating coal-fired boilers and upgrading gasfired boilers to make use of nitrogen combustion technology. The city has eliminated 4,453 coal-fired boilers for heating 13,259 metric tons of water per hour this year, the city’s environmental protection bureau said. At the same time, improvements have been made to 7,000 gas boilers heating 23,000 T/h, so less nitrogen oxide will be produced. As a result, the city has managed to cut more than 10,000 tons of nitrogen oxide, 3 million tons of coal, 5,500 tons of smoke and 6,600 tons of sulfur dioxide this year.