Design and modeling of an integrated combined plant with SOFC for hydrogen and ammonia generation

Because of the requirement of the utilization of energy resources in a way that is both effective and efficient, solid oxide fuel cells have become a notable preference due to their advantages such as high efficiency and use with different fuels. In addition, the integration of these systems in the production of alternative fuels such as hydrogen and ammonia are important for a sustainable future to combat environmental problems. For this reason, the main intention of this paper is to introduce a new plant combining the different systems that use the solid oxide fuel cell for a cleaner and sustainable future. In the modeled work, a solid oxide fuel cell, a gas turbine, an organic Rankine cycle, a Kalina cycle with ejector, a hydrogen generation and storage process, a wood steaming plant, and an ammonia production system is integrated, to generate useful products. Detailed thermodynamic modeling is performed through energy and exergy methods, to determine the performance of the advised system and subsystem. Moreover, energy efficiency, exergy efficiency, and exergy destruction analyses methods are applied to each sub-plant and the whole system separately. In addition, parametric research is carried out to examine the effects of modifying key parameters on the plant's and subsystems' performance. Looking at the analysis results, the amount of the hydrogen and ammonia generation capacities of this work are 0.0085 kgs^?1and 0.2023 kgs^?1, respectively. In addition, the modeled power plant produces a power rate of about 20,180 kW. As a result, this proposed study is calculated to have 61.04% energy efficiency, and 57.13% exergy efficiency.     

电厂输煤系统废水分析与治理

通过分析电厂输煤系统的水质特点，结合西柏坡发电厂的废水治理，确定采用化学混凝处理废水。试验证明，合理配比使用复合混凝剂可有效治理废水，增加经济效益。     

大型选煤厂控制系统的升级改造

所介绍的控制系统升级改造是结合平朔安家岭露天煤矿选煤厂的实际情况,以把其控制系统升级改造成为国内一流的选煤厂自动控制系统为目标,实现选煤厂科学经营管理生产的技术改造工程。     

大型坑口电厂优化选址的分析研究

合理开发煤炭资源、优化能源生产结构、确保能源安全供应,对优化大型坑口电厂的选址具有十分重要的意义。现以山西某大型坑口电厂为例,介绍其优化选址方案,以期对大型坑口电厂在优化选址方面能起到一定的参考作用。     

浅析盘北选煤厂工艺跟踪市场的灵活性

介绍了盘北选煤厂机动灵活的工艺特点,以适应分选煤质波动大的原煤,保证产品质量,满足市场需要。     

增设中煤再洗工艺的实践与效果

七台河精煤集团公司选煤厂通过增设中煤再洗工艺 ,增加了洗精煤产率 ,提高了经济效益。     

选煤厂电网谐波及其对电机的危害

针对目前选煤厂的电网环境,应用电机学理论中基波磁势和谐波磁势的推导方法,揭示了谐波电流在电机中产生的各次磁动势的运转规律;在分析交流电机工作特性的基础上,阐述了电网谐波对电机的危害。     

实现选煤综合自动化的几项关键技术

分析了国内外选煤厂自动化的现状 ,提出了实现选煤厂综合自动化亟待解决的几项关键技术 ,展望了这些关键技术在选煤厂的应用前景。