新型炉排型生活垃圾焚烧炉的设备及应用

分析了四种生活垃圾焚烧炉的特点。以某市生活垃圾焚烧发电项目为例,介绍了新型炉排型生活垃圾焚烧炉设备,采用"顺推干燥+逆推燃烧燃尽"结构设计、烟气循环烘干的工艺设计,并采用计算机CFD技术对炉排炉燃烧场进行数值模拟分析,技术先进、运行稳定,适合我国城市生活垃圾、城市污泥、餐厨垃圾等无分拣的混合型垃圾处理。     

垃圾焚烧发电的技术特点与问题分析

随着垃圾产生量的增加,垃圾处理成为人们十分关注的问题.填埋、焚烧和堆肥是目前普遍采用的三种处理方式.在综合介绍、对比三种方法处理特点的基础上,重点针对垃圾焚烧发电技术的相关问题着重进行了分析.采用垃圾焚烧工艺需要满足可燃物含量、低位发热值和垃圾含水率等基本参数,且选择层燃炉、回转炉、流化床等不同炉型又有其各自的技术特点.同时,把垃圾焚烧发电的焦点问题集中在焚烧处理中产生的有毒物质二恶英、焚烧飞灰和渗滤液几方面,并对其解决对策进行了分析,以解决垃圾焚烧发电技术的瓶颈问题,实现可持续开发利用.     

生活垃圾焚烧电厂防臭措施与除臭系统设计

垃圾焚烧发电是目前垃圾处理的最有效方式,垃圾焚烧可减少对环境的污染,同时提高垃圾的利用价值。垃圾焚烧容易产生恶臭气味,通过防臭、除臭的合理设计,可以减少臭味气体的数量和对人体的影响。通过对垃圾焚烧电厂防臭、除臭设计分析及实际应用,提出了垃圾焚烧电厂防臭、除臭的有效途径,提高垃圾发电厂建设的合理性,减少对周围居民和环境的影响。     

我国城市生活垃圾处理行业2009年发展综述

简述了2009年我国城市生活垃圾处理的总体状况;归纳了2009年国家发布和实施的有关标准和政策;介绍了2009年新批准申请CDM的填埋气体利用项目和垃圾焚烧发电项目、垃圾堆肥项目,以及新投入运行的生活垃圾焚烧发电厂;对城市生活垃圾处理行业的发展进行了展望。     

我国城市生活垃圾处理行业2010年发展综述

简述了2010年我国城市生活垃圾处理的总体状况;归纳了2010年国家发布和实施的有关标准和政策;介绍了2010年新批准申请CDM的填埋气体利用项目和垃圾焚烧发电项目、垃圾堆肥项目,以及新投入运行的生活垃圾焚烧发电厂;对城市生活垃圾处理行业的发展进行了展望。     

城市生活垃圾焚烧炉排的机理与应用

本文介绍了城市生活垃圾焚烧炉排的机理 ,阐述了垃圾焚烧强度与垃圾焚烧量、垃圾低位发热量及炉排有效面积的关系 ;逆推式炉排使垃圾焚烧距离几乎增加两倍 ,对焚烧中的垃圾起到拨火作用 ,使垃圾更易烧尽。     

城市生活垃圾林烧炉排的机理与应用

本文介绍了城市生活垃圾焚烧炉排的机理,阐述了垃圾焚烧强度与垃圾焚烧量、垃圾低位发热量及炉排有效面积的关系;逆推式炉排使垃圾焚烧距离几乎增加两倍,对焚烧中的垃圾起到拔火作用,使垃圾更易烧尽。     

成都中节能再生能源有限公司

成都市人民政府为处理城市生活垃圾，采用特许经营方式建设成都市祥福生活垃圾焚烧发电项目，以公开招标方式选择项目法人。经过公开招标、投标，中国节能环保集团公司下属公司——中国环境保护公司中标，由中国环境保护公司独家投资，组建项目公司一一成都中节能再生能源有限公司，负责成都市祥福生活垃圾焚烧发电项目的投资、建设、营运。项目厂址位于成都市青白江区祥福镇民强村，     

“十三五”一半垃圾埋改烧

<正>"到2020年,我国垃圾焚烧处理率将达到50%。"在日前召开的第六次生活垃圾焚烧处理技术与设备研讨会上,住房和城乡建设部环境卫生工程技术研究中心主任徐文龙推测说。垃圾焚烧发电获得发展据徐文龙主任介绍,我国设市城市的生活垃圾无害化处理率已达到89.3%,其中70%以填埋为主,25%~28%为焚烧。目前的垃圾焚烧处理率为25.6%。     

我国城市生活垃圾处理行业2011年发展综述

回顾了我国生活垃圾处理的发展概况,归纳了2011年国家发布和实施的有关标准和政策;介绍了2011年新批准申请CDM的填埋气体利用项目和生活垃圾焚烧发电项目、垃圾堆肥项目,以及新投入运行的生活垃圾焚烧发电厂等;对城市生活垃圾处理行业的发展进行了展望。     

高浓度有机废气燃烧过程自动控制系统设计

本文对上海申达纺织股份有限公司高浓度有机废气燃烧过程的自动控制、系统运行安全联锁以及工艺参数巡回检测的设计进行研究，自动控制调节主要采用常规PID调节规律进行调节。经安装、调试及运行表明，整个系统稳定、安全，废气处理和余热回用效率高，达到了预期的目标，实现了废气燃烧过程的自动控制。     

Photovoltaic-thermal (PV/t) panel to minimize electrical and air conditioning energy consumption of a typical office in Beirut

A combined photovoltaic–thermal (PV/t) panel is proposed to produce simultaneously electricity and heat from one integrated unit. The unit utilizes effectively the solar energy through achieving higher PV electrical efficiency and using the thermal energy for heating applications. To predict the performance of the PV/t at a given environmental conditions, a transient mathematical model was developed. The model was integrated in a heating application for a typical office space in the city of Beirut to provide the office needs for electricity, heating during winter season, and dehumidification and evaporative cooling during the summer season. To minimize the yearly office energy (electrical and heat) needs, the PV/t panel cooling air flow rate and the dehumidification regeneration temperature were determined for opimal unit operation. Thermal energy savings of up to 85% in winter and 71% in summer were achived compared to conventional systems at a payback period of 8 years for the panels.     

Comparative study on performances of a heat-pipe PV/T system and a heat-pipe solar water heating system

The heat-pipe solar water heating (HP-SWH) system and the heat-pipe photovoltaic/thermal (HP-PV/T) system are two practical solar systems, both of which use heat pipes to transfer heat. By selecting appropriate working fluid of the heat-pipes, these systems can be used in the cold region without being frozen. However, performances of these two solar systems are different because the HP-PV/T system can simultaneously provide electricity and heat, whereas the HP-SWH system provides heat only. In order to understand these two systems, this work presents a mathematical model for each system to study their one-day and annual performances. One-day simulation results showed that the HP-SWH system obtained more thermal energy and total energy than the HP-PV/T system while the HP-PV/T system achieved higher exergy efficiency than the HP-SWH system. Annual simulation results indicated that the HP-SWH system can heat the water to the available temperature (45°C) solely by solar energy for more than 121 days per year in typical climate regions of China, Hong Kong, Lhasa, and Beijing, while the HP-PV/T system can only work for not more than 102 days. The HP-PV/T system, however, can provide an additional electricity output of 73.019 kWh/m², 129.472 kWh/m², and 90.309 kWh/m² per unit collector area in the three regions, respectively.     

The use of an atmospheric dispersion model to determine influence regions in the Prince George,B.C. airshed from the burning of open wood waste piles

A means of determining air emission source regions adversely influencing the city of Prince George, British Columbia, Canada from potential burning of isolated piles of mountain pine beetle-killed lodge pole pine is presented. The analysis uses the CALPUFF atmospheric dispersion model to identify safe burning regions based on atmospheric stability and wind direction. Model results show that the location and extent of influence regions is sensitive to wind speed, wind direction, atmospheric stability and a threshold used to quantify excessive concentrations. A concentration threshold based on the Canada Wide PM_2.5 Standard is used to delineate the influence regions while Environment Canada's (EC) daily ventilation index (VI) is used to quantify local atmospheric stability. Results from the analysis, to be used by air quality meteorologists in assessing daily requests for burning permits, are presented as a series of maps delineating acceptable burning locations for sources placed at various distances from the city center and under different ventilation conditions. The results show that no burning should be allowed within 10 km of the city center; under poor ventilation conditions, no burning should be allowed within 20 km of the city center; under good ventilation conditions, burning can be allowed within 10–15 km of the city center; under good to fair ventilation conditions, burning can be allowed beyond 15 km of the city center; and if the wind direction can be reliably forecast, burning can be allowed between 5 and 10 km downwind of the city center under good ventilation conditions.     

Regional industrial ecology: examples from regional economic systems of forest industry and energy supply in Finland

Industrial ecology (IE) promotes the development of industrial systems based on recycling of matter and cascading of energy through cooperation. In this paper, the local/regional industrial ecosystem approach is reflected in two examples from Finland. The local forest industry system is based on renewable resources, waste materials and energy utilisation between forestry companies, a saw-mill, a pulp mill, a paper mill and a forest industry power plant. Waste energy from electricity production is used for production of heat and process steam. Regional city energy supply systems in Finland are also to a large extent arranged around power plants that utilise waste energy. The potential of combining the forest industry system with the energy supply systems of cities is considered and the conditions for success in the Finnish case are discussed.     

市政污泥干化焚烧工艺设计与思考

以南方经济发达地区100 tDS/d的污泥干化焚烧发电工程为例,介绍了污泥处置的热电联用系统.工程利用离心干化设备,以废蒸汽为热源干化污泥,提高热值,干化污泥与生物质在循环流化床锅炉中协同焚烧,焚烧产生的蒸汽通过汽轮发电机组发电自用.烟气经过多级处理后达标排放,废水、飞灰和炉渣都得到有效的处理与处置.该工程的实施缓解了...     

产品防护设计与工艺技术的应用

本文主要阐述了某型产品在电气、内部热环境、控制器、箱体结构、表面涂镀层、材料与元器件筛选等方面具有针对性的防护设计与工艺技术应用,主要包括防尘、防水、阻燃、电磁兼容、电气安全、振动、噪声、表面防护等设计与技术措施.有效的设计与工艺技术可以明显提高产品的环境适应性.     

城市生活垃圾填埋场甲烷气资源的产量估算及其利用

本文论述了填埋场甲烷气体的产生过程及影响因素，介绍了三种产气量估算方法及其主要特点、适用范围，并指出运用数学模型对产气量作出预测，为垃圾填埋场气体收集与处理系统的设计提供可靠的依据。同时，论述了甲烷气体的减排和综合利用措施。     

DISTRIBUTED DISCHARGE OF COOLING WATER ALONG DIRECTION OF STREAM FLOW1

ABSTRACT. A multiple-outfall system for cooling water disposal which is distributed along the direction of stream flow is analyzed. The results provide a simple method of preliminary design of a cooling water discharge outfall system and for a quick extimate of water quality of a polluted stream. It is shown that a properly designed distributed discharge system is capable of preventing serious pollution due to localized discharge of wastes and waste heat; however, the final design of the discharge system should take into account alternative schemes of waste heat disposal and their economic consequences.     

Experimental investigation on the phase change material-based modular heat exchanger for thermal management of a building

A phase change material (PCM)-based flat plate modular heat exchanger for free cooling application, suitable for the diurnal temperature variation that prevails during the summer months of Bangalore city, India is designed and experimentally investigated. The flow and other parameters selected in the present study are meant to suit the accelerated charging of the PCM in the modular heat exchanger during the early morning hours, and to provide cool energy to the room during the daytime, by circulating the ambient air through the heat exchanger at a lower velocity. It is observed from the charging experiments that the decrease in the inlet air temperature has more influence in reducing the solidification time than the increase in the inlet air velocity. The heat exchanger designed in the present investigation is capable of maintaining the room temperature around 30°C for a longer duration of 8 hr when the heat load is 0.5 kW. It is suggested to design the modular heat exchanger with a surface area proportionate to the present heat exchanger size when the room heat load increases beyond 0.5 kW, in order to maintain a minimum comfortable temperature of 30°C in the room.