酒钢3~#焦炉计算机加热控制系统

介绍了酒泉钢铁公司新建3#焦炉计算机加热控制系统的方案，硬件和软件配置；系统实际运行情况。     

振动式给煤机控制方法的改进

针对现有振动式给煤控制器存在的问题提出了一种应用单片机解决问题的方法。该方法解决了原控制器线性度极差、控制范围过窄的问题，为火力发电厂的制粉系统的进一步自动化创造了条件。     

振动对煤体裂隙分布和力学性能的影响

通过对煤岩体在一定安应力和一定频率下的激振作用，使煤体致一裂隙进而改变煤岩体的力学性能，为振动法致生煤体裂隙防治冲击地压理论提供实验依据。     

采用模糊控制算法的混合煤气热值串级调节及稳定管网压力控制系统

介绍涟钢混合煤气热值串级闭环控制系统采用先进的控制算法，并配以功能较强的研华工控机硬件，从而较好地实现了对混合煤气热值的闭环调节。     

Mineralogy of clean coal combustion by-products

Coal combustion technologies are changing in order to burn coal more cleanly. Many “clean combustion“ and postcombustion technologies are developed to remove SO2 and NOx gases, particulate matter during combustion, or from the flue gases leaving the furnace. This paper focuses on three types of fly ash (flue gas desulfurization (FGD) residuals, atmospheric fluidized bed combustion (AFBC) residuals and sorbent duct injection (SDI) residuals) which produced by “the clean combustion“ and postcombustion technologies. The residuals formed by FGD are PCFA (pulverized coal fly ash) grains entrained with reacted and unreacted sorbent and have lower bulk densities than PCFA grains because it contains higher concentrations of calcium and sulfur, and lower concentrations of silicon, aluminum and iron than PCFAs. AFBC residuals consist of spent bed which is a heterogeneous mixture of coarse-grained bed material and irregularly shaped, unfused, spherical PCFAs. The main crystalline phases in AFBC residuals are anhydrite (reacted sorbent), quartz and lime (unreacted sobent), calcite, hematite, periclase, magnetite and feldspars.The residuals produced by SDI contained 65%-70% PCFA with the larger sizes material being irregularly shaped, fused or roughedged. The reaction products of sorbent (portlandite and lime) included calcium sulfate (anhydrite) and calcium sulfate. The chemical properties of these residuals are similar to those of high calcium PCFAs because of the high alkalinity and high pH of these residuals.     

高职院校体质健康测试工作的运行现状及反思 ——以安徽冶金科技职业学院为例

主要对安徽冶金科技职业学院学生体质健康测中测试环境、学生应对情况以及测试结果进行统计分析,结合2014年颁布的《国家体质健康标准》和相关研究方法,对测试中存在的问题以及学生体质健康测试成绩的质量和影响因素,提出相应对策和建议,从而构建科学的高职院校体质健康测试体系。     

循环流化床锅炉启动能耗大的原因分析及对策

针对平朔电厂300 MW循环流化床锅炉点火能耗大的问题,详细分析了现有的点火状况以及影响启动能耗的因素,并在床料量的选取、点火一次风量的调整、油枪的出力选取、投煤温度点的选取以及启动时间上进行了相应的调整,调整后的运行方式在实际运行中得到了很好的应用,并取得了良好的经济效益。     

综采放顶煤工艺研究应用

通过对磁窑沟煤矿13101工作面综采放顶煤工艺流程进行研究分析,并结合工作面煤层地质条件及现场情况,确定工作面合理的放煤步距和放煤方式,现场应用实践结果表明,采用综采放顶煤开采技术后,工作面煤炭回收率和顶煤回收率均达到90%以上,工作面最高月产达到57.98万t,实现了安全高效开采。