含碱高炉渣排碱、脱硫能力的实验研究

为探讨高炉渣排碱、脱硫能力间的关系,根据广钢实际高炉渣成分,通过实验研究了w(CaO)/w(SiO2),w(MgO),w(Al2O3)对炉渣排碱、脱硫的影响.结果表明:w(CaO)/w(SiO2)对炉渣的排碱、脱硫能力影响较大,二者相互矛盾;w(MgO)升高,炉渣排碱能力降低,含碱炉渣最佳脱硫对应的w(MgO)比普通炉渣低3%.w(Al2O3)升高,炉渣的排碱能力变化不大,而脱硫能力迅速降低.广钢高炉适宜的炉渣成分为:w(CaO)/w(SiO2)保持在1.0,w(MgO)保持在12%,w(Al2O3)保持在15%.     

MgO含量对高炉渣性能的影响研究

结合理论分析，就高炉渣中MgO含量对炉渣流动性和稳定性的影响进行了实验分析．结果表明，适当提高高炉渣中MgO含量，炉渣粘度下降，流动性改善，稳定性提高。     

印度600 MV燃煤机组制粉系统选择分析

通过对印度600 MV燃煤机组典型煤质分析,从制粉系统选择、制粉系统的设备配置、工程投资、运行可靠性、经济性等方面对各方案进行分析比较。     

Effects of basicity and MgO content on the viscosity of the SiO2-CaO-MgO-9wt%Al2O3 slag system

The effects of basicity and MgO content on the viscosity of SiO2-CaO-MgO-9wt%Al2O3 slags with basicity from 0.4 to 1.0 and MgO content from 13wt%to 19wt%were investigated using the rotating cylinder method. A correlation between the viscosity and the slag structure was determined by Fourier transform infrared （FTIR） spectroscopy. It is indicated that the complex network structure of the slag melt is depolymerized into simpler network units with increasing basicity or MgO content, resulting in a continuous decrease in viscosity of the slag. The viscosity is strongly dependent on the combined action of basic oxide components in the slag. Under the present experimental conditions, increasing the basicity is found to be more effective than increasing the MgO content in decreasing the viscosity of the slag. At higher temperatures, the increase of basicity or MgO content does not appreciably decrease the viscosity of the slag, as it does at lower tem-peratures. The calculated activation energy of viscous flow is between 154 and 200 kJ＆#183;mol-1, which decreases with an increase in basicity from 0.4 to 1.0 at a fixed MgO content in the range of 13wt%to 19wt%.     

燃煤电厂清洁生产模式认识

随着节约型社会的建立和环保要求的不断提高,燃煤发电厂需要一种更先进的模式来指导生产—燃煤电厂清洁生产模式。本文在清洁生产理论的指导下,总结了燃煤电厂清洁生产的特点。其中,清洁煤发电技术在生产中起着十分重要的作用,为此讨论了多种清洁煤发电技术在清洁生产中的应用及其技术特点,这些技术包括有煤炭选洗加工、先进燃烧器、加脱硫脱硝装置(SPB+FGD)的超临界机组、流化床燃烧技术和多联产技术、煤气-蒸汽联合循环发电技术、燃料电池技术等。根据以上内容,从电厂本身出发提出了火力发电厂的清洁生产模式,并给出了具体事例。     

炉渣强化活性污泥法对餐饮废水的处理

本文就炉渣强化活性污泥法处理餐饮废水的工艺特性进行了实验研究.通过加入炉渣前后的对比试验,实验结果表明,在用了炉渣强化活性污泥法净化处理的餐饮废水,CODcr、NH4+-N、TP去除率都优于普通活性污泥法,活性污泥絮体结构和沉降性能明显改善.当水力停留时间为6h时,炉渣强化活性污泥法对餐饮废水中CODcr、NH4+-N、TP的去除率分别达85.3～91.2%、59.6～68.2%、80.2～87.8%,出水中CODcr、NH4+-N均达到<污水综合排放标准>(GB8978-1996)一级标准,且处理效果稳定.因此炉渣强化活性污泥法处理餐饮废水的的效果是相当好的.     

The effect of biomass pyrolysis gas reburning on N<Subscript>2</Subscript>O emission in a coal-fired fluidized bed boiler

The fossil fuel consumption and pollutant emissions in a coal fired fluidized bed boiler could be reduced by biomass pyrolysis gas reburning. The influence of three kinds of biomass pyrolysis gases on the emission of N₂O in a laboratory scale fluidized bed was investigated using the mechanism of GRI3.0 in this paper. The results showed that: the effect of sawdust pyrolysis gas reburning on N₂O was more significant than that of rice husk and orange peel under the same conditions; the increase of initial oxygen content from 1% to 8% in flue gas would restrain the decomposition of N₂O; the N₂O decomposition was enhanced by increasing reaction temperature from 1073.15 K to 1323.15 K, and the decomposition rate may reach 99% at 1223.15 K.     

高炉渣酸溶物基水热合成光催化剂的研究

以冶金高炉渣酸溶物为原料,采用水热法合成制备光催化剂,利用傅里叶变换红外光谱(FTIR)和扫描电镜(SEM)对光催化剂的化学组分、比表面积等物性进行表征,并研究了水热反应过程中pH值、反应温度和反应时间对高炉渣酸溶物制光催化剂催化活性的影响。结果表明,所制光催化剂是一种比表面积较大的多孔材料,且具有良好的光催化活性;光催化氧化浓度为2 5 mg/L的甲基橙溶液陈化0.5 h后,其脱色率达到98.9%。     

燃煤电厂烟气脱硫脱硝技术的研究与发展

文章首先介绍燃煤电厂烟气脱硫脱硝技术的研究现状,包括联合脱硫脱硝、同时脱硫脱硝在内的脱硫脱硝一体化原理、特点和应用前景。其次,阐述了烟气脱硫脱硝技术的发展趋势,最后说明科研工作者今后工作的重心和方向。