机组锅炉掺烧半焦试验及经济性分析 -

为了推广半焦在大型煤粉锅炉上的应用,通过在135 MW煤粉锅炉上的半焦掺烧性能试验,分别从电厂锅炉效率、厂用电率、供电煤耗、环保指标、检修维护成本以及煤炭价格等方面分析了煤粉锅炉掺烧半焦对电厂供电成本的影响。研究结果表明,掺烧30%左右的半焦对锅炉运行经济性影响较小,在目前的煤炭价格下,掺烧30%半焦时机组运行经济性变化对供电成本的影响在1%以下,半焦自身价格是影响其在电厂大规模推广应用的核心因素。 In order to promote the application of semi-coke on large-scale pulverized coal fired boiler,the impacts of coal blending with semi-coke on the operational economic of power plant such as the boiler gross efficiency,the station service power consumption rate,the net coal consumption,the environmental protection indicators,maintenance cost,and coal price etc were systematically analyzed by testing the performance of coal blending on a 135 MW power plant.Results show that coal blending with 30% semi-coke has little effect on the operational economic,and it demonstrates less than 1% impact on the power supply cost,while the price of semi-coke is the main factor affecting the widely application of semi-coke on power plant