无锡市联赢干燥设备有限公司主营:燃煤热风炉|燃油燃气热风炉|直接式燃煤热风炉
当前位置 -> 环亚ag88热风炉知识燃煤热风炉煤质究竟该怎样掌控 发布时间:(2018/12/9)关键词:环亚ag88

燃煤热风炉煤质究竟该怎样掌控

 

环亚ag88 www.cgfly.cn 燃煤热风炉煤质的重要性,我们都知道燃煤热风炉的煤质一般的要求不是那么的严格,但是不是要求不严格就没有要求,大部分卧室链条炉都是二类,三类烟煤。燃烧的时候也会出现煤燃烧不完全等故障,这就是煤质没有把握好,究竟该怎样掌控?燃煤热风炉在使用的时候煤质量的好坏,直接影响热风炉的燃烧效率,所以在选煤的时候就要注意这几点了,首先要保持干燥,从炉型情况分析,层燃炉、室燃炉炉型对煤炭的挥发分要求更为严格;旋风炉、沸腾炉和循环流化床热风炉对煤种要求较为宽松,可选用煤炭的挥发分区间较大,煤种适应性强,特别是近几年新建的循环流化床热风炉,对挥发分要求较为宽松。在使用煤粉燃烧的热风炉中,入炉前对煤粉要经过干燥处理,以减少水分对发电热风炉燃烧带来的影响,因为煤的水分升高发热量降低,热风炉排烟温度升高,影响发电热风炉的燃烧效率。再者煤种含有硫,燃烧后生成s02和s03,它们极易与烟气中的水蒸气化合成H2S04蒸气,对发电设备产生腐蚀作用。

The importance of coal quality in coal-fired hot-blast stoves, we all know that the general requirements of coal quality in coal-fired hot-blast stoves are not so strict, but there are no requirements if the requirements are not strict. Most bedroom chain stoves are of type II and type III bituminous coal. When burning, faults such as incomplete combustion of coal will also occur. That is, the quality of coal is not assured. How to control it? The quality of coal in the use of coal-fired hot-blast stove directly affects the combustion efficiency of hot-blast stove, so we should pay attention to these points when preparing coal. First of all, we should keep dry. From the analysis of furnace type, the requirements for volatile components of coal are more stringent for layer-fired stove and chamber-fired stove; cyclone stove, fluidized-bed stove and circulating fluidized bed. The requirement of coal type for hot-blast stove is relatively loose, the volatilization zones of coal selected are relatively large, and the adaptability of coal type is strong. Especially for the newly built circulating fluidized bed hot-blast stove in recent years, the requirement of volatilization is relatively loose. In the hot-blast stove using pulverized coal combustion, the pulverized coal must be dried before entering the stove to reduce the influence of moisture on the combustion of the power generation hot-blast stove. The combustion efficiency of the power generation hot-blast stove is affected by the increase of the moisture content of coal and the decrease of the calorific value and the increase of the exhaust gas temperature of the hot-blast stove. Moreover, the coal contains sulfur, which produces S02 and S03 after combustion. They are very easy to synthesize H2S04 vapor with water vaporization in flue gas, which has a corrosive effect on power generation equipment. 煤的发热量低于设计指标,炉内温度水平降低,影响煤粉的燃点和燃尽,热风炉热效率下降,当发热量低到一定程度时将引起燃烧不稳,灭火放炮,以及必须投油助燃,煤的发热量高于设计水平,炉膛温度必然升高,煤灰大多软化、熔融,容易形成结渣。

The calorific value of coal is lower than the design index, the temperature level in the furnace decreases, which affects the burning point and burnout of pulverized coal, and the thermal efficiency of hot blast stove decreases. When the calorific value reaches a certain level, it will cause combustion instability, fire extinguishing and firing, as well as the need to throw oil to assist combustion. The calorific value of coal is higher than the design level, the furnace temperature will inevitably rise, and most of coal ash It is easy to form slagging by softening and melting.

燃煤热风炉在使用的时候,如果燃料的水分过大,那么在燃烧的时候效率就会大大的降低。首先让燃料燃烧,至少要达到他的燃烧点,但是如果有水分的话,那么就会大大增加加热的时间,在这水分的蒸发在经过管道的时候,就会出现有水珠的生成,那么就会是管道出现腐蚀的现象,这样热风炉的寿命就会受到影响。

When the coal-fired hot blast stove is in use, if the moisture content of the fuel is too large, the efficiency of combustion will be greatly reduced. First let the fuel burn, at least to reach its burning point, but if there is water, then it will greatly increase the heating time, when the evaporation of water through the pipeline, there will be the formation of water droplets, then the pipeline will be corroded, so the life of the hot blast stove will be affected.


版权所有@转载请注明:http://www.cgfly.cn/shownews.asp?id=359

本站网址:环亚ag88 来源:联营热风炉  浏览次数:126 
相关阅读:热水热风炉线磨损量以及水温控制 | 燃气热风炉种类特点以及工作原理 | 环亚ag88

版权所有:无锡市联赢干燥设备有限公司主营:环亚ag88    电话:0510-83955910    传真:0510-83051522    技术支持:易商科技