火电厂烟气余热利用及深度治理综合技术应用

文章阐述了火电厂烟气余热利用及烟气深度治理系统的应用效果,介绍了该系统的组成及工作原理,该系统具有治理烟羽、烟气余热利用、烟气提水的功效,在满足发电厂烟气近零排放的前提下,可降低机组整体的水耗和煤耗。     

卧龙河气田增压南站噪声治理

根据卧龙河气田增压南站周边环境状况、增压机噪声强度及频谱分析特性,结合吸音、隔音、扩容、变频、减震、阻尼等降噪原理和治理技术,提出了卧龙河增压南站噪声最优化的治理方案,即七台机组噪声综合治理方案。该方案可满足厂界噪声达到GB12348-90规定的三类标准要求,一次性投资费用为303万元,且便于压缩机日常维护及保养,并可进行机组就地大修。     

余热利用技术在陆梁油田的应用

陆梁油田作业区为节能减排,结合现场实际,引进利用烟气余热回收装置。文章总结分析了烟气余热回收装置在现场的应用方案,通过计算可知:陆九发电站发电机及压缩机烟气余热,用于原油掺热热源每年可节约燃料费590.8万元。该技术的应用达到了节能挖潜,降本增效的目的,可提高能源利用率。     

余热利用高效节能电除尘技术及工程应用

论述了余热利用高效节能电除尘技术的定义、工作原理,介绍了燃煤电站采用烟气余热利用高效节能电除尘技术的几种典型布置方式。重点介绍了该技术在宁德电厂600MW燃煤锅炉上的工程应用情况,通过烟气余热利用高效节能电除尘技术达到了"提效"和"节能"的双重目的。     

油田注汽锅炉烟气余热利用与低碳减排

通过对注汽锅炉烟气余热利用潜力的分析及开展余热利用方式对比分析,采用在注汽锅炉对流段上安装热管换热器,使高温烟气与助燃空气换热,利用换热器回收烟气余热。该技术的现场应用,实现了注汽锅炉燃料单耗降低和污染物排放量降低的目的,取得了良好的节能、减排效果。     

注汽锅炉烟气余热利用技术应用

通过对注汽锅炉烟气余热利用潜力分析和开展余热利用方式对比分析,采用了在对流段安装热管换热器,通过换热器将烟气余热与助燃空气换热,余热利用技术的现场应用,实现了注汽锅炉燃料单耗降低的目的,取得良好的节能效果。     

气田放空天然气减排技术探讨

随着低碳发展理念的不断深入,放空天然气带来的资源浪费与温室气体排放问题日益成为气田节能减排的关注重点之一。文章结合气田放空天然气排放特点,着重探讨国内外回收利用现状,在分析西南油气田减排技术需求的基础上提出适宜的减排技术建议,包括：开发井口放空气撬装式回收装置,开展增压机放空天然气减排技术研究,开展火炬气减排技术研究。通过对此类技术群的继续开发与应用,为气田下一步减排行动提供技术参考。     

燃用高硫煤锅炉排烟余热回收及减排综合应用研究

针对燃用高硫煤锅炉,提出了一套耦合集成两级低温省煤器、暖风器三位一体的"高硫煤锅炉排烟余热回收及减排综合应用系统",该系统高效节能,实现了烟气余热的梯级利用,取代传统的蒸汽暖风器,并同时解决了燃用高硫煤空预器积灰、堵塞问题,在燃用高硫煤锅炉机组中具有广泛的应用前景。     

某气田增压站压缩机组噪声治理效果分析

针对川东地区大多数增压场站存在的厂界噪声超标问题，以某气田增压站为例，从生产设备、厂界范围入手，分析了压缩机组噪声超标点位，提出了噪声超标治理方案。经现场改造后，噪声排放满足GB 12348—2008《工业企业厂界环境噪声排放标准》二类昼间≤60 dB（A），夜间≤50 dB（A）的要求。该压缩机组 降噪治理应用有效降低了噪声水平，符合国家环保政策，为气田后期开发提供参考。     

燃劣质煤火电机组“超低排放”技术路线选择

简述了美国燃劣质煤火电机组烟气治理技术的应用情况,介绍了国内燃劣质煤火电机组烟气治理技术发展情况,通过对燃劣质煤火电机组烟气治理技术的研究,结论是燃劣质煤火电机组应根据其高灰、高硫等特点进行具体分析,并对相关技术发展提出建议。     

燃煤锅炉低温烟气余热利用探讨

针对燃煤锅炉燃烧产生的低温烟气仍具有一定温度的现象,提出通过增设超导热管空气预热器对这部分低温烟气余热加以回收的设想,对锅炉送风进行预热,探讨烟气余热利用可达到的送风温度、节能效果及可能产生的经济效益。     

余热锅炉在绿色油田建设中的应用

余热锅炉的运用使得不同品级的能源可以得到充分合理的利用。中国石油塔里木油田公司在生产实践中,采用燃气发电机组—余热锅炉联合循环技术,用不能再发电的燃气尾气生产蒸汽,对天然气中蕴含的能量进行分级利用,实现了发电、供热双重效益,也降低了对周边环境的热污染。文章对该热电联合循环的工艺流程进行介绍,通过对燃气发电机组尾气的能量传递进行计算,用热力学原理进行分析,以期实现对使用余热锅炉后的热电联产经济性进行综合评价的目的。     

Assessment of the greenhouse effect impact of technologies used for energy recovery from municipal waste: A case for England

Waste management activities contribute to global greenhouse gas emissions approximately by 4%. In particular the disposal of waste in landfills generates methane that has high global warming potential. Effective mitigation of greenhouse gas emissions is important and could provide environmental benefits and sustainable development, as well as reduce adverse impacts on public health. The European and UK waste policy force sustainable waste management and especially diversion from landfill, through reduction, reuse, recycling and composting, and recovery of value from waste. Energy from waste is a waste management option that could provide diversion from landfill and at the same time save a significant amount of greenhouse gas emissions, since it recovers energy from waste which usually replaces an equivalent amount of energy generated from fossil fuels. Energy from waste is a wide definition and includes technologies such as incineration of waste with energy recovery, or combustion of waste-derived fuels for energy production or advanced thermal treatment of waste with technologies such as gasification and pyrolysis, with energy recovery. The present study assessed the greenhouse gas emission impacts of three technologies that could be used for the treatment of Municipal Solid Waste in order to recover energy from it. These technologies are Mass Burn Incineration with energy recovery, Mechanical Biological Treatment via bio-drying and Mechanical Heat Treatment, which is a relatively new and uninvestigated method, compared to the other two. Mechanical Biological Treatment and Mechanical Heat Treatment can turn Municipal Solid Waste into Solid Recovered Fuel that could be combusted for energy production or replace other fuels in various industrial processes. The analysis showed that performance of these two technologies depends strongly on the final use of the produced fuel and they could produce GHG emissions savings only when there is end market for the fuel. On the other hand Mass Burn Incineration generates greenhouse gas emission savings when it recovers electricity and heat. Moreover the study found that the expected increase on the amount of Municipal Solid Waste treated for energy recovery in England by 2020 could save greenhouse gas emission, if certain Energy from Waste technologies would be applied, under certain conditions.     

Refrigeration waste heat utilization for drying applications: a review

ABSTRACT

Cold chain industry has a vast potential for waste heat recovery. It is a matter of importance for energy efficiency point of view, as global energy demand is increasing day by day. Ample amount of low-grade energy is either unutilized or underutilized. The heat rejected by a Heat pump or refrigeration system emerged as a promising solution for dehydration by utilizing low-grade waste heat despite higher investment. As compared to solar drying technology, heat pump drying evolved as a reliable method regarding better process control, energy efficiency, and quality of the product to be dried. Energy utilized through the refrigeration system’s waste/exhaust heat recovery in combination with or without renewable energy source enhances the overall efficiency of the system and also reduces the cost. This useful review investigated and compared the research findings of waste heat utilization through heat pump and from condenser of refrigeration system on laboratory, pilot as well as industrial scale for drying of various fruits, vegetables, and agro products. Various drying parameters like drying rate, moisture content, Specific Moisture Extraction Rate (SMER), Coefficient of Performance (COP), Exergy efficiency, and temperature as well as humidity conditions inside the drying chamber were also reviewed to promote the technological advancement of energy utilization by commercial cold storage waste heat recovery.     

“三废”资源化利用探讨

针对我国环境污染严重,资源、能源利用率低的现状,胜利油田积极开展“三废”资源化工作。通过对废水、固体废物、工业废气资源化现状的分析,科学地论证了“三废”资源化具有投资少,处理工艺简单易行,处理成本低,管理难度小等优点。找出存在的主要问题,并提出下一步工作目标。     

炼化企业低温余热利用技术探讨＊

目前炼化企业有大量的低温余热需要回收,了解低温余热的来源、回收途径和技术,对提高低温余热利用效率十分重要。文章对炼厂低温余热的主要来源、利用途径和技术进行综合分析,提出炼厂低温余热回收利用的一些建议。     

集中供热锅炉烟气脱硝技术的开发与应用

通过锅炉结构的改进、SCR工艺装置的优化、快速跟踪负荷变化的还原剂制备及控制调节技术的开发和应用等系统性的工作,有效满足了集中供热锅炉房烟气脱硝工程的技术要求,成功开发了集中供热锅炉烟气脱硝技术。在实际工程应用中,确保了在不同负荷段下,锅炉至SCR装置入口段的温度满足脱硝要求,SCR工艺装置能够在不同负荷下连续稳定运行并很好地跟踪负荷的变化,确保氨逃逸率满足设计要求,保证锅炉的安全稳定运行。