【作者】 贾瑜；

【导师】 任有中；

【作者基本信息】 浙江大学 ， 工程热物理， 2003， 硕士

【摘要】 随着国民经济的发展，对工业锅炉高效、低污染燃烧的要求越来越高，而工业锅炉燃用型煤具有良好的节能效益和环保效果，与直接燃烧原煤相比，锅炉热效率有较大提高，而排烟含尘浓度则会大大降低，而且在型煤中添加固硫剂后，固硫率也会有较大的提高。本文，对型煤这种洁净能源的各个方面都进行了详细说明。文章首先介绍了型煤成型的技术，包括型煤成型的原理，即无粘结剂成型和粘结剂成型原理，和工业中应用的两种型煤成型工艺，即炉前成型工艺和集中成型工艺。然后又对现有的型煤的脱硫技术进行比较详细的说明，并对影响型煤脱硫效果的各种因素进行了分析。最后，文章着重介绍了作者在与课题组师生一起研究固硫添加剂的基础上，对型煤着火燃烧进行的研究工作，并详细说明了影响型煤着火燃烧的各种因素。为了研究型煤的着火燃烧，作者在实验室搭建了自己的型煤燃烧实验台架，并选取了几种有代表性的煤种压制成型，进行了型煤着火燃烧的实验。在大量实验数据基础上，分析了型煤中各种成分(如挥发份、水分)，型煤不同成型压力，型煤中添加固硫剂及助燃剂对型煤着火燃烧的影响。最后，通过在现场工业试验中对比燃用型煤和散煤，通过对试验数据的分析，说明锅炉在燃用型煤后，锅炉热效率有大约3％的提高，烟尘排放量大大降低，而且燃用型煤后锅炉固硫率也有大约55％。实践证明，型煤技术的确是一种具有较好的节能、环保效益的洁净煤技术。更多还原

【Abstract】 With the development in domestic economy, high efficient and low pollution fuel is needed. It has good environment and energy saving profits when burning briquettes in the industry boilers. Compared with burning the conventional raw coal, the boiler heat efficiency increases, the dust concentration decreases and the desulfuration rate increases dramatically after adding sulphur-fixing agent in briquettes.Various fields of technology about briquettes are introduced in this thesis in detail. Firstly, it presents briquettes molding technology, include different molding theory (molding with binder and molding without binder) and molding methods (furnace-front molding and centralized molding). Secondly, in this thesis the desulfuration technology applied in briquette combustion is explicated and the factors that influenced the desulfuration rate are analyzed as well. Finally, the mechanism of briquette combustion is introduced and the factors that influenced on the combustion of briquette are also analyzed in this in this thesis.In order to study the combustion of briquettes, an experimental equipment is built up in the laboratory and a serious of experiments with different kinds of coal is carried out on the platform. Through these experiments, some factors influencing ignition and combustion of briquettes are analyzed, such as coal properties, different pressure on molding and the additives in briquette.Based on the industrial test of briquette combustion, the results show that the boiler efficiency increases about 3% and the dust concentration obviously decreased. It also shows the desulfuration rate increase about 55% compared with buring the conventional raw coal.The briquette technology has benefit both in saving energy and reducing pollution. So it is a better clean coal combustion technology.更多还原