工业园区天然气分布式能源站替代燃煤锅炉的应用研究

发布时间：2018-06-29 13:51

本文选题：天然气分布式能源站 + 能源综合利用率　；参考：《山东建筑大学》2017年硕士论文

【摘要】：天然气分布式能源站(Natural Gas Distributed Energy Station)作为能源领域的一个清洁、高效、便利的综合性项目,近年来逐步由欧美发达国家引入国内。随着能源消耗的不断增加,能源成本不断上升,环境保护压力的逐步加大,在工业高速发展的情况下,工业园区对燃料和用能系统的清洁高效性依赖也越来越高。工业园区用能结构的合理性和能源利用率的高低将直接影响我国能源结构的发展方向。因此,在工业园区制定经济合理、安全可靠的用能形式是解决上述问题的关键。首先,分析了NGDES在国内外的发展趋势,结合济南的能源供应现状和供应条件并响应节能环保的政策要求,确定采用NGDES替代原有燃煤锅炉为工业园区供能。并且对NGDES的概念、系统分类、原理和主要设备进行了介绍。其次,课题选用济南某工业园的煤改气工程实例进行研究。根据现场调研和园区提供的冷、热、电负荷数据,结合济南市典型年室外气象参数,模拟推算了济南某工业园的工业用蒸汽负荷、供暖用热负荷、夏季冷负荷以及全年电负荷,并详细分析了各用能建筑的负荷特点。工业园年供蒸汽量是10万吨,其中有4.012万吨用于满足冬季供暖负荷,5.76万吨用于满足生产工艺用蒸汽负荷,2280吨用于吸收式制冷,年供冷量是2844MW,年耗电量是2479万kWh。根据各负荷特点设计了6种可供选择的NGDES系统和相关的设备,确定使用燃气轮机发电机组作为原动机组,采用余热锅炉作为余热回收设备以提高系统的综合能源利用率,采用燃气锅炉作为补燃设备,尤其是满足冬季供暖用蒸汽热负荷需求。并研究了各方案合理的运行模式,选择最优系统保证系统能够以最佳状态运行,以达到节能环保的要求。最后,对济南某工业园分布式能源站进行了实际监测,并对监测数据进行了研究分析。并且使用系统综合能源利用率、?效率、经济?效率、相对节能率等指标综合评价了分布式能源站系统。根据现场实测的数据重点分析系统的环境效益、经济效益和社会效益。
[Abstract]:As a clean, efficient and convenient comprehensive project in the field of energy, Natural Gas distributed Energy Station has been gradually introduced into China by developed countries in Europe and America in recent years. With the increasing of energy consumption, the energy cost is rising, and the pressure of environmental protection is gradually increasing. With the rapid development of industry, the industrial park relies more and more on the cleanliness and efficiency of fuel and energy use system. The rationality of energy use structure and the efficiency of energy utilization in industrial parks will directly affect the development direction of energy structure in China. Therefore, it is the key to solve the above problems to make a rational, safe and reliable energy use form in the industrial park. Firstly, the development trend of NGDES at home and abroad is analyzed. According to the current situation and supply conditions of energy supply in Jinan, and in response to the policy requirements of energy saving and environmental protection, NGDES is adopted to replace the original coal-fired boilers to supply energy for the industrial park. The concept, system classification, principle and main equipment of NGDES are introduced. Secondly, the project selected Jinan industrial park coal to gas project case study. Based on field investigation and data of cold, heat and electricity load provided by the park, combined with outdoor meteorological parameters of typical years in Jinan, the industrial steam load, heating heat load, summer cooling load and annual electric load of an industrial park in Jinan are simulated and calculated. The load characteristics of energy-using buildings are analyzed in detail. The annual steam supply of the industrial park is 100000 tons, of which 40120 tons are used to meet the heating load in winter, and 57600 tons to meet the steam load of production process. The annual cooling capacity is 2844 MW and the annual electricity consumption is 24.79 million kWh. According to the characteristics of each load, six kinds of alternative NGDES system and related equipment are designed. The gas turbine generator unit is used as the prime mover group, and the waste heat boiler is used as the waste heat recovery equipment to improve the comprehensive energy utilization of the system. Gas-fired boiler is used as supplementary combustion equipment, especially to meet the heat load demand of heating steam in winter. The reasonable operation mode of each scheme is studied, and the optimal system is chosen to run in the best condition to meet the requirements of energy saving and environmental protection. Finally, a distributed energy station in Jinan Industrial Park is monitored, and the monitoring data are analyzed. And use the system for comprehensive energy utilization? Efficiency, economy? The distributed energy station system is evaluated synthetically by efficiency, relative energy saving rate and so on. The environmental benefit, economic benefit and social benefit of the system are analyzed according to the field measured data.
【学位授予单位】：山东建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU996

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