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截止至2012年底,我国在用工业锅炉超过60.73万台。燃煤工业锅炉以层燃式机械炉排为主,占90%以上,其运行热效率仅为65%左右,比国际先进水平低15~20%,如果能使热效率提高到75%,可以节约7000万吨标准煤。对运行锅炉实施炉膛改造,改造后燃烧可以达到或超过流化床、煤粉炉燃烧效果,看不到冒烟、烟尘初始排放可降低90%以上,锅炉受热面上没有飞灰粘结,并可以持续不变;可以降低鼓、引风机配套动力和除尘器动力消耗30%。对新制造锅炉,可降低排烟温度100℃,节约钢材15%以上,节约锅炉辅助动力40~60%。结合当前炉排、鼓、引风机变频技术,可使锅炉使用效率达到和保持85~90%。对照热工测试报告、烟尘排放测试报告和使用实例。如能够在全国范围内实施,年可节省标准煤在1亿吨以上(包括节省电力),按照每吨标准煤800元计算,可节约燃料煤费用800亿元/年,可减少烟尘排放量约300多万吨、SO2:35万吨、CO2:2.5亿吨。还可以节约大量钢材,具有极大的社会效益和经济效益。
As of the end of 2012, China had more than 607,300 industrial boilers in use. Coal-fired industrial boiler to layer-based mechanical grate, accounting for more than 90%, the thermal efficiency of its operation is only about 65% lower than the international advanced level of 15 to 20%, if the thermal efficiency can be increased to 75%, you can save 7000 Ten thousand tons of standard coal. Furnace transformation of the implementation of the operation of the boiler, after the transformation of combustion can meet or exceed the fluidized bed, pulverized coal combustion effect, can not see the smoke, the initial emissions of soot can be reduced by more than 90%, the boiler heating surface is not bonded with fly ash, and Can be sustained; can reduce the drum, induced draft fan supporting power and dust catcher power consumption 30%. The newly-built boiler can reduce the exhaust gas temperature by 100 ℃, save more than 15% of the steel, and save 40-60% of auxiliary power of the boiler. Combined with the current grate, drum, induced draft fan frequency conversion technology, the boiler can be used to achieve and maintain the efficiency of 85 to 90%. Control thermal test report, smoke and dust emission test reports and examples of use. If it can be implemented nationwide, annual savings of more than 100 million tons of standard coal (including electricity savings), according to 800 yuan per tonne of standard coal, can save fuel costs 80 billion yuan / year, can reduce emissions of about Over 3 million tons, SO2: 350,000 tons, CO2: 250 million tons. You can also save a lot of steel, with great social and economic benefits.