共查询到18条相似文献,搜索用时 234 毫秒
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《燃烧科学与技术》2021,(2)
使用Aspen plus软件构建了耦合化学链气化的生物质整体气化联合循环发电系统(BIGCC).在常压下研究了气化反应器温度、载氧体与生物质的摩尔比、余热锅炉汽水循环中高压/中压/低压水蒸气压力等因素对耦合系统发电功率和?效率的影响.此外,对耦合系统在气化压力为常压和1.7 MPa下的?损失、?效率和发电效率进行分析,并与常规BIGCC系统的结果对比.研究结果表明,气化反应器温度为750℃,载氧体与生物质摩尔比为0.45时系统性能较好.汽水循环中水蒸气优化后压力为13 MPa/3.25 MPa/0.8 MPa.系统的?损失主要发生在气化系统和燃气轮机系统.总体上,耦合系统的发电效率和?效率均高于常规系统,气化压力的提高有助于改善系统的发电效率和?效率. 相似文献
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温度对中试规模的喷动流化床煤部分气化行为的影响 总被引:1,自引:0,他引:1
在构建的热输入2MW的中试规模加压喷动流化床部分气化试验装置上,对徐州烟煤的加压部分气化行为进行了研究.重点考察了气化温度对煤气成分、煤气热值、碳转化率和煤气产率等气化指标的影响.研究结果表明,煤气各组分的浓度,特别是甲烷浓度对气化温度非常敏感,碳转化率和煤气产率随温度的升高而增加,在试验的温度区间内,温度对煤气热值影响不大.部分气化炉所产生的煤气和半焦的热值均满足第二代增压流化床联合循环发电系统的要求. 相似文献
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循环流化床热,电,气三联产装置的开发和应用前景分析 总被引:11,自引:1,他引:11
介绍了一种循环流化床热、电、气三联产新工艺,该工艺是以现有循环流化床技术为基础,集燃烧和气化工艺于一体,能同时产生民用煤气、蒸汽、电力,在小型热态试验台架上进行的一系列试验已成为地证实了该技术的可行性。在此基础上,1台75t/h热电气三联产装置已完成设计,正在实施之中,其锅炉部分已投运,运行情况良好。 相似文献
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INTRODUCTIONCoal is the main energy resource in China. Morethan 70% electric power is generated by coal-firedpower plants in the country. It will be continued to bedominant in next century. The need for new electricgenerating capacity is growing along with the growthof Chinese economy. Meanwhile, environment pollution caused by coal combustion is also concerned here.So, searching new technologies to burn coal cleanlyand efficiently to produce power is a very importanttask to the energy r… 相似文献
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在以循环流化床锅炉循环灰为热载体,部分气化产生的半焦为锅炉燃料,煤气为燃气轮机燃料的煤的部分气化联合循环中,降低焦油产率,提高煤气产率是一个技术关键,以焦油的两种主要组份苯和甲苯为研究对象,利用固定床实验台实验研究了一种混煤形成的循环灰条件下的裂解反应特性,测定了裂解反应动力学参数,探讨了循环灰对焦油裂解的催化机理。实验结果表明,与石英砂条件相比,循环灰极大地促进了焦油的裂解程度,气态裂解产物总量 相似文献
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Yue Xu Yining Wu Shimin Deng Shirang Wei Energy Power Engineering School of Xi''''an Jiaotong University Xi''''an China Thermal Power Research Institute State Power Corporation Xi''''an China 《热科学学报(英文版)》2004,13(1):85-90
The partial coal gasification air pre-heating coal-fired combined cycle (PGACC) is a cleaning coal power system, which integrates the coal gasification technology, circulating fluidized bed technology, and combined cycle technology. It has high efficiency and simple construction, and is a new selection of the cleaning coal power systems. A thermodynamic analysis of the PGACC is carried out. The effects of coal gasifying rate, pre-heating air temperature, and coal gas temperature on the performances of the power system are studied. In order to repower the power plant rated 100 MW by using the PGACC, a conceptual design is suggested. The computational results show that the PGACC is feasible for modernizing the old steam power plants and building the new cleaning power plants. 相似文献
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The waste management is become a very crucial issue in many countries, due to the ever-increasing amount of waste material, both domiciliary and industrial, generated. The main strategies for the waste management are the increase of material recovery (MR) which can reduce the landfill disposal, the improvement of energy recovery (ER) from waste and the minimization of the environmental impact.Recent studies have focused on an innovative technology, the plasma gasification, that has been demonstrated as one of the most effective and environmentally friendly methods for solid waste treatment and energy utilization.In this paper, a plasma gasification process based on plasma torch technology has been investigated by developing a thermochemical model (EPJ, EquiPlasmaJet) able to estimate both the syngas composition and the energy required for the gasification reactions. The EPJ model has been employed to predict the syngas composition and the energy balance of a RDF (refuse derived fuel) plasma arc gasification reactor using air as plasma gas, and, in order to define the optimal operating conditions three different configurations have been investigated.Results show that, in the better plant solution, the plasma gasification efficiency is 69.1% (LHV) and the lower heating value of the syngas generated is about 9 MJ/kg. Furthermore in order to evaluate the suitability of this technology for energy recovery from solid wastes, the integration of the optimum plasma gasification system (PGS) with a gas turbine combined cycle (GTCC) has been analysed and the performance of the resulting integrated plasma gasification combined cycle (IPGCC) has been evaluated. The system efficiency (31% LHV) is very high in comparison with the efficiency of conventional technologies based on waste incineration (20%). 相似文献
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根据国际上煤气化联合循环 (IGCC)发电技术的发展水平 ,结合国内现状 ,分析和讨论开发煤气化联合循环余热锅炉的技术关键和技术路线 ,预测技术市场前景。 相似文献