SO2 emissions and reduction technologies in the Chinese cement industry
Facing more and more strict and detailed environmental protection standards, Chinese cement enterprises have to adopt various desulfurization technologies. The authors analyze the cycle processes of sulfur in the cement production process, and introduce various desulfurization technologies currently used in China’s cement plants.
In 2020, there were 1609 dry process cement clinker lines in China, with an annual cement output of 2.395 billion t, accounting for 58% of the global output. In 2018, the Chinese cement industry emitted 700 thousand t of SO2, accounting for 2-2.5% of Chinese total industrial SO2 emissions [1, 2]. At present, the cement industry has become one of the most serious emission sources and key control industries in China’s industry [3].
1 Emission standard of sulfur dioxide for the Chinese cement industry
At present, the current SO2 emission standard of the Chinese cement industry is the Emission...
