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为了节约锅炉点火和助燃用油,我们进行了高能电弧直接点燃煤粉的研究,目前已取得初步试验结果。现介绍如下。一、设备装置系统高能电弧直接点燃煤粉的试验装置系统见图1。包括给粉系统、送风系统、高能电弧发生系统和燃烧系统。高能电弧发生系统包括电源和等离子体电弧发生器两部分。电源部分为直流电源,由可控硅整流器、直流变压器和饱和电抗器等组成,可以保证电流呈陡降的伏安特件;等离子体电弧发生器示于图2,由于等离子体电弧能量集中,产生高热(管弧出口处可达3000℃以
In order to save boiler ignition and combustion-supporting oil, we carried out the research on high-energy arc direct ignition of pulverized coal, and preliminary test results have been achieved so far. Now introduced as follows. First, the device device system High-power arc directly ignited pulverized coal test device system shown in Figure 1. Including the powder system, air supply system, high-energy arc generation system and combustion system. High-energy arc generation system includes a power supply and a plasma arc generator in two parts. Power supply part of the DC power supply, by the SCR rectifier, DC transformers and saturable reactor, etc., can ensure that the current dropped sharply volt-ampere; plasma arc generator shown in Figure 2, due to the plasma arc energy concentration, High heat (tube arc outlet up to 3000 ℃