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Sustainable cofiring of biomass with coal

机译：生物质与煤炭的可持续共烧

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Biomass is an attractive renewable fuel to supplement coal combustion in utility boilers. Coal cofiring was successful with up to a 20% biomass mix. Results of extensive applications have shown that cofiring of biomass with coal have accomplished the following: (1) increased boiler efficiency, (2) reduced fuel costs and (3) reduced emissions of NO_x and fossil CO_2. Every ton of biomass cofired directly reduces fossil CO_2 emissions by over 1 ton. Woody biomass contains virtually no sulfur, so SO_2 emissions are reduced in direct proportion to the coal replacement. Biomass is a regenerable biofuel. When a fossil fuel is replaced by a biofuel, there is a net reduction in CO_2 emissions. Biomass can contain considerable alkali and alkaline earth elements and chlorine, which, when mixed with other gas components derived from coal such as sulfur compounds, promotes a different array of vapor and fine particulate deposition in coal fired boilers.
机译：生物质是一种有吸引力的可再生燃料，可补充公用事业锅炉中的煤燃烧。高达20％的生物质混合煤成功燃烧。广泛应用的结果表明，将生物质与煤共烧可实现以下目的：（1）提高锅炉效率，（2）降低燃料成本，（3）减少NO_x和化石CO_2的排放。共燃每吨生物质可直接减少化石CO_2排放超过1吨。木质生物质实际上不含硫，因此与煤炭替代品成正比地减少了SO_2的排放。生物质是可再生的生物燃料。当化石燃料被生物燃料替代时，CO_2排放量将净减少。生物质可能包含大量的碱金属和碱土金属元素以及氯，当与其他源自煤的气体成分（例如硫化合物）混合时，它们会在燃煤锅炉中促进一系列不同的蒸气和细颗粒沉积。

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