Abstract:
In China, incineration is essential for reducing the volume of municipal solid waste arising in its numerous megacities. The evolution of incinerator capacity has been huge, yet it creates strong opposition from a small, but vocal part of the population. The characteristics of Chinese municipal solid waste are analysed and data presented on its calorific value and composition. These are not so favourable for incineration, since the sustained use of auxiliary fuel is necessary for ensuring adequate combustion temperatures. Also, the emission standard for acid gases is more lenient in China than in the European Union, so special attention should be paid to the issue of acidification arising from flue gas. Next, the techniques used in flue gas cleaning in China are reviewed and the acidification potential by cleaned flue gas is estimated. Still, acidification induced by municipal solid waste incinerators remains marginal compared with the effects of coal-fired power plants.
摘要:
在中国,焚烧对于减少其众多大城市中产生的城市固体废物的量至关重要。焚烧炉容量的演变是巨大的,然而它却引起了来自一个小团体的强烈反对,但声音的一部分人口。分析了中国城市生活垃圾的特征,并提供了有关其热值和组成的数据。这些不太有利于焚烧,因为持续使用辅助燃料对于确保足够的燃烧温度是必要的。此外,中国的酸性气体排放标准比欧盟宽松,因此,应特别注意烟气产生的酸化问题。接下来,综述了我国烟气净化技术,并对净化烟气酸化潜力进行了估算。尽管如此,与燃煤发电厂的影响相比,城市固体废物焚化炉引起的酸化仍然微不足道。