针对手工绘制汽轮机热力平衡图费时间、图形格式各异和通用性差等问题,开发了工业汽轮机热力平衡图的动态绘制系统。首先建立规范的图例库,包括部件图例、管道连线图例和文本图例,然后在Visual Studio 2005中进行程序编写,最后基于Auto...针对手工绘制汽轮机热力平衡图费时间、图形格式各异和通用性差等问题,开发了工业汽轮机热力平衡图的动态绘制系统。首先建立规范的图例库,包括部件图例、管道连线图例和文本图例,然后在Visual Studio 2005中进行程序编写,最后基于AutoCAD应用程序,实现工业汽轮机热力平衡图的动态绘制输出。研究结果表明,该绘制系统可以和热力设计软件无缝集成,绘制不同工况、不同机型机组的热力平衡图,操作简便、高效,制图规范正确,为设计人员提高工作效率提供了很好的开发工具。展开更多
For the purpose of effective and economic desulfurization of flue-gas, the predominance area diagram of the Mn-S-O system at different temperatures was constructed based on the thermodynamic data obtained from the lit...For the purpose of effective and economic desulfurization of flue-gas, the predominance area diagram of the Mn-S-O system at different temperatures was constructed based on the thermodynamic data obtained from the literatures. It is seen from this figure that flue-gas desulfurization by manganese oxides is feasible from the thermodynamic point of view. Additionally, the most appropriate temperature range for flue-gas desulfurization is between 600 and 800 K, and the reaction is strongly exothermic to maintain the heat balance. The natural manganese ores encompass large tunnels that exhibit large surface areas and highly chemical activity, which can provide a high enough SO2 removing efficiency. From the superposition of the diagrams of Mn-S-O and Fe-S-O systems, it is found that there is a coexistent stability region of MnSO4 and Fe2O3, which provides the possibility of desulfurization by selective sulfation without ferric sulfate forming. A multi-stage desulfurization system has been discussed briefly.展开更多
The lg c-pH diagram of the CaCl2-Ca（OH）2-H2O system and its two subsystems at 298.15 K are constructed according to the theory of thermodynamic equilibrium. The interaction characteristics between the solubility of ...The lg c-pH diagram of the CaCl2-Ca（OH）2-H2O system and its two subsystems at 298.15 K are constructed according to the theory of thermodynamic equilibrium. The interaction characteristics between the solubility of CaCl2 and Ca（OH）e can be found out from the diagrams. CaCl26H2O （s）, Ca（OH）2（s） and solution coexist when the pH value of solution is about 10.8. CaC12 with the minimum solubility of 1 682.4 g/L is in equilibrium with solution when the pH value is lower than 9.4, and Ca（OH）2 with the minimum solubility of 2.749 g/L is in equilibrium with solution at the pH value over 12.1, which provides a theoretical basis for the treatment and reuse of calcium chloride mother liquor for collocating lime cream which is the precipitant in the process of synthesizing magnesium hydroxide.展开更多
文摘针对手工绘制汽轮机热力平衡图费时间、图形格式各异和通用性差等问题,开发了工业汽轮机热力平衡图的动态绘制系统。首先建立规范的图例库,包括部件图例、管道连线图例和文本图例,然后在Visual Studio 2005中进行程序编写,最后基于AutoCAD应用程序,实现工业汽轮机热力平衡图的动态绘制输出。研究结果表明,该绘制系统可以和热力设计软件无缝集成,绘制不同工况、不同机型机组的热力平衡图,操作简便、高效,制图规范正确,为设计人员提高工作效率提供了很好的开发工具。
基金Project(51344006)supported by the National Natural Science Foundation of China
文摘For the purpose of effective and economic desulfurization of flue-gas, the predominance area diagram of the Mn-S-O system at different temperatures was constructed based on the thermodynamic data obtained from the literatures. It is seen from this figure that flue-gas desulfurization by manganese oxides is feasible from the thermodynamic point of view. Additionally, the most appropriate temperature range for flue-gas desulfurization is between 600 and 800 K, and the reaction is strongly exothermic to maintain the heat balance. The natural manganese ores encompass large tunnels that exhibit large surface areas and highly chemical activity, which can provide a high enough SO2 removing efficiency. From the superposition of the diagrams of Mn-S-O and Fe-S-O systems, it is found that there is a coexistent stability region of MnSO4 and Fe2O3, which provides the possibility of desulfurization by selective sulfation without ferric sulfate forming. A multi-stage desulfurization system has been discussed briefly.
基金Project(2008BAB35B04) supported by National High Technology Research and Development Program of ChinaProject(2010QZZD003) supported by Advanced Research Program of Central South University,China
文摘The lg c-pH diagram of the CaCl2-Ca（OH）2-H2O system and its two subsystems at 298.15 K are constructed according to the theory of thermodynamic equilibrium. The interaction characteristics between the solubility of CaCl2 and Ca（OH）e can be found out from the diagrams. CaCl26H2O （s）, Ca（OH）2（s） and solution coexist when the pH value of solution is about 10.8. CaC12 with the minimum solubility of 1 682.4 g/L is in equilibrium with solution when the pH value is lower than 9.4, and Ca（OH）2 with the minimum solubility of 2.749 g/L is in equilibrium with solution at the pH value over 12.1, which provides a theoretical basis for the treatment and reuse of calcium chloride mother liquor for collocating lime cream which is the precipitant in the process of synthesizing magnesium hydroxide.
