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一、前言为了迅速实现电力工业现代化,我厂决心依靠自己的力量设计制造我国第一台60万千瓦电站锅炉。对这样大容量锅炉,我们过去没有设计和运行经验,设计过程中存在不少困难。60万千瓦锅炉拟意为正方形炉膛,八角切园燃烧,配风扇磨煤机直吹式系统。设计煤种为元宝山褐煤,这种煤热值低,灰份高,灰熔点低,这就算设计提出如下问题: 1、由于煤的熔点低,对组织强化燃烧是否会出现费斯顿管后对流受热面,炉内及冷灰斗区的结焦。 2、据国外资料介绍燃烧褐煤的某些大炉子炉底要加炉排,既防止除灰爆炸又可使没燃
I. Foreword In order to quickly realize the modernization of the power industry, our factory is determined to design and manufacture the first 600,000 kilowatt power plant boiler in our country by our own strength. We did not have the design and operating experience for such a large-capacity boiler in the past, and there were many difficulties in the design process. 600,000 kilowatts boilers intended for the square furnace, octagonal cutting Park combustion, with fan mill straight blow system. Design coal for the ingot Hill lignite, the low calorific value of coal, ash, ash, low melting point, which even the design of the following questions: 1, due to the low melting point of coal, the organization will intensify the combustion after Feiston tube Convection heating surface, the furnace and cold ash bucket area coking. 2, according to foreign data to introduce some large furnace burning lignite furnace bottom plus grate, both to prevent the ash explosion can also make no burning