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51.
一、床下动态点火
1．具有较高挥发份燃料（vdaf〉10）的点火启动这类煤的燃点一般较低（400～500℃）,点火相对简单,其操作步骤如下：首先应检查并做好锅炉点火前的各项准备工作。向炉内铺设约450－600mm厚的底料,作冷态试验,检查布风板布风均匀性及确定最低流化风量。 相似文献
52.
本文通过作者对大屯发电厂#6、7机组自投产运行以来出现的几起典型的引起机组停机事故的分析,结合对机纽技术改进后的运行情况比较,提出了机组在设计、安装及运行方面存在的不足,通过本厂对机组的改进及改进后机组的运行情况,对循环流化床机组的设计、安装及运行提出了自己的意见. 相似文献
53.
阐述了内蒙古准能矸电2×330MW(CFB)机组锅炉模拟量控制系统的设计思路以及控制范围,针对循环流化床锅炉运行的特点,对区别于煤粉炉的模拟量控制进行了积极的探讨和设计,旨在提高循环流化床锅炉的设计和控制水平. 相似文献
54.
菅云峰 《内蒙古科技与经济》2010,(12):74-75
文章对循环流化床锅炉在运行过程中水冷壁易磨损的部位及磨损原因进行了分析,介绍了应采取的相应措施,在实际运行中对减轻水冷壁的磨损、保证机组的安全运行起到了一定的作用。 相似文献
55.
阐述了内蒙古准能矸电2×330MW（CFB）机组锅炉模拟量控制系统的设计思路以及控制范围,针对循环流化床锅炉运行的特点,对区别于煤粉炉的模拟量控制进行了积极的探讨和设计,旨在提高循环流化床锅炉的设计和控制水平。 相似文献
56.
57.
In this paper, the characteristics of fluid mixing time in a novel extra-loop fluidized bed were studied. The results showed that the mixing time was shortened with the increase of fluid velocity. All the discrete numbers of the reactor were above 0.2. The serial number n was 2.5 -3.0. It was judged accordingly that the reactor fluid state was continous stirred tank reactor （CSTR） mainly. When the inspiratory capacity increased the mixing time of the reactor was shortened. Thus the air input was beneficial for the fluid mixing. During the three phases mixing process, the mixing time of the reactor could be decreased by the n increase of carrier and air loading together, but the change was not significant. The parameters affecting the reactor fluid state were fluid velocity, inspiratory capacity and carrier. KLa could be increased with the air loading increase, and at the same gas/liquid ratio when the pressure drop was high, KL~ value was increased. The amount of carrier complex influence on KLa. As the carrier loading continued to increase, its value had been dropped but the changes was not significant, and optimization condition was found at above 800 1 000 g carrier loading （pouzzolane） or 600 g PVC. Under gas/liquid ratio of 0.8% -5.2%, KLa was （0.62-1.37）×10^-2· s^-1. 相似文献
58.
A novel method, based on acoustic emission （AE） techniques, for detecting agglomeration in fluidized beds is presented. Particle size characteristics are determined based on the principle that AE signals with different frequency band energies are emitted when particles of different sizes impact an internal wall. By applying chaotic analysis to the AE signals, the malfunction coefficients are well defined. Agglomeration in the fluidized bed can then be detected by the sudden variation of malfunction coefficients. AE signals were investigated in a laboratory scale heated fluidized bed and an industrial polyethylene flu- idized bed. Experimental data showed that the malfunction coefficients increased with the growth of agglomeration. The results indicated that agglomeration in fluidized beds can be predicted and diagnosed effectively and precisely using AE techniques based on chaotic analysis. 相似文献
59.
介绍300MW循环流化床锅炉对掺烧焦化厂附产品——焦炉煤气的研究和首次成功应用.焦炉煤气在大容量、高参数循环流化床锅炉应用上取得成功,有较强的推广意义. 相似文献