小型火力发电厂消烟除尘

根据中华人民共和国环境保护法有关规定,各项有害物质排放必须符合国家规定标准。火力发电厂排放有害物质主要有二氧化硫(SO_2)和飘尘。 治理这二种污染物当前小型火力发电厂采用水膜除尘器能够消除大部分飘尘和15%左右的二氧化硫(SO_2)。因此,选用水膜除尘器是小型火力发电厂消烟除尘最好设     

浅谈小型火力发电厂输煤系统的粉尘治理

本文介绍了喷淋系统和DSX的防、除尘系统的降除尘原理以及在集中供热热源和热电联产的小型火力发电厂输煤系统中煤尘治理的应用方法.     

火力发电厂电气一次的部分设计分析

对于火力发电厂来说,正确选择主接线电气设备、设备和线路等是确保火力发电厂顺利扩建的有效方法。文章通过分析主接线电气设备、设备和线路的选择情况,计算配电室负荷、短路电流的方法以及继电保护和接地技术的设计方法来为火力发电厂电气一次的部分设计提供一些参考性意见,力求加快火力发电厂的建设速度,确保优质的电力资源,从而加快我国现代化建设的步伐。     

林区供热取暖和节能的有效途径

几年来,我省森工企业在大力发展生产的同时,按照采用先进技术开展节约能源活动的要求,借鉴国内外成功的经验,对热能设施进行了技术改造,为林区节约能源开辟了新的途径。一、热电联产,循环水供热取暖林区的小型火力发电厂,长期单一地进行发电生产,受冬夏季节和昼夜间用电负荷     

略谈火力发电热力系统的优化

一、火力发电厂热力系统化的意义 在火力发电厂中把若干个热力设备和局部环节(又称分系统)连接起来,组成一个有机的网络称为热力系统。一个全面性热力系统则是一个电厂汽水系统的总和,它是由很多个分系统组成的,是电厂中最大、最繁杂的系统,它的优劣直接影响电厂运行的热经济性。而它的母体正是我们设计中的司令图——热力系统图。 可见,每个电厂的热经济性的绝大部分把握在我们设计者手中。在拟定或设计热力     

黑龙江省林业设计研究院热电规划设计院简介

热电规划设计院业务范围：中小型火力发电厂设计（单机容量25000kW以下），集中供热锅炉房（单炉容量220t/h以下）及热网设计，城市水源及给排水工程设计工作。     

火力发电厂设备检修管理对策探讨

随着社会的发展,对于电能的需求越来越大,要保证电能供应,火力发电厂就必须保证发电设备稳定运行。这对火力发电厂的设备检修管理带来了巨大的挑战。文章分析了当前火力发电厂设备检修管理制度所存在的弊端,并在此基础上提出了改善火力发电厂设备检修管理的对策。     

火力发电厂热工仪表检修与维护要点分析

热工仪表在火力发电厂的正常运行中发挥了极其重要的作用,在日常生产运作中,需做好火力发电厂热工仪表的检修、保养与维护工作,在确保发电厂正常运营的同时,保证发电厂人员的自身安全。重点围绕火力发电厂热工仪表检修与维护内容展开分析论述。     

火电厂锅炉节能减排技术

火力发电厂的工业锅炉在不同的地方得到了广泛的使用,但我们仍然需要在提升火力发电厂的能源一次性使用率和锅炉的能源降低方面作更大的努力和提高,才能更加有效地削减发电过程中所耗费的成本和实现节能减排的目的。文章主要从以下几个方面来探讨火力发电厂的节能减排措施:对锅炉的燃烧进行优化、预防锅炉漏风、对火力发电厂进行合理规划、生产和管理,只有充分地考虑到这些措施,才能达到锅炉节能减排的目的。     

小型火力发电厂快速优化设计

所谓快速优化设计,就是利用较短时间,提出合理设计方案,完成全部设计文件。快速优化设计是设计部门能否占领设计市场的根本保证。 火力发电厂设计的整个工艺过程是用各种管道、管件、阀门连接主机和辅机,工艺比较复杂,设计周期长,建设周期长。 十几年来我们在省内外几十座电站设计中积累一些数据,探索一些经验,这些数据     

发电厂负荷预测及供电质量

发电厂设计是否合理,将直接影响到发电厂的投资效益和安全可靠运行,只有正确的规划电力系统,才能合理的设计发电厂,既不造成设备积压,又能充分利用能源,使之建设成具有中国经济特色的发电厂。     

Application of CITYgreen5.0 model to tender appraisement of small-scale green-space designs

Developed by the American Forests, CITYgreen5.0 model has been widely applied to urban forestry research and has played an important role in analyzing quantitatively the ecological benefits produced by varied green-space ecosystems. One of the functions of this model is to evaluate quickly and objectively on parts of the ecological benefits possibly produced by different design schemes for the same small-scale green-space project before the establishment. A comparative analysis was conducted by modeling partial ecological benefits potentially produced by green-spaces of two different design schemes for the same roof garden of Chuangfushidai-Junjingyuan in Shenzhen, given the growth status of plants both immediately after the establishment and 20 years later. Meanwhile, the project costs for each design scheme were also taken into consideration. The results showed that scheme II, mainly designed with a natural style of plant disposition, had a better greenery structure than that of scheme I, which was basically designed with a regular style of plant disposition. The estimated value of the partial ecological benefits produced by scheme II was larger than that of scheme I and the benefit-cost ratio of scheme II was more rational. It was suggested that scheme II be put into practice.     

关于黑龙江岁宝热电厂循环供水系统设计的分析

本文对黑龙江岁宝热电厂扩建工程的循环供水系统进行了方案比较,确定最优方案的实施。     

Shifting contestation into cooperation: Strategy to incorporate different interest of actors in medicinal plants in Meru Betiri National Park,Indonesia

Meru Betiri National Park (MBNP) is home to a variety of medicinal plants that local communities collect for individual use and sale. In MBNP, a variety of actors are interested in medicinal plants for different reasons. This paper analyzes the interest and influence of ten important actors related to medicinal plant collection and use in MBNP: national park management, the Plantation and Forestry Office of Jember District, farmer groups (jaket resi), medicinal plant collectors (pendarung), medicinal plants purchasers (pengepul), small-scale medicinal plant industries of the Toga Sumber Waras, Bandealit plantation company, a conservation NGO (LSM KAIL), loggers (blandong), and log buyers (borek kayu). To examine and map the position of different interests and influences of actors involved in medicinal plant usage, this paper uses a power grid matrix. The analysis confirms that five of the ten aforementioned actors play a direct role in the medicinal plant policy process, while five actors do not and can be categorized as context setters, subjects, or crowd. This paper ends by recommending a strategy for considering policy options that promote shared interests and minimize anticipated objection from actors concerning the harvest of medicinal plants in MBNP. It concludes that the utilization of medicinal plants in MBNP, together with protection of natural resources, should become an integral part of the park's conservation strategy.     

The tree planting and protecting culture of cattle ranchers and small-scale agriculturalists in rural Panama: Opportunities for reforestation and land restoration

To examine the opportunities available for designing diverse tree planting and land restoration initiatives in agricultural landscapes that contain tropical dry forests, the tree planting and protecting practices of cattle ranchers and small-scale agriculturalists were examined in two study sites in rural Panama. Ninety-nine tree species were identified that they utilize, plant, or protect on their land, the majority of which are native to Panama. The farmers had diverse reasons for maintaining trees, including improving the environment, providing food and shade for cattle, and generating a source of wood for construction, furniture, and firewood. Most of the trees mentioned in the study provide multiple uses and values and the majority of farmers wanted to plant additional trees. Some differences in species preferences and motivations for planting and protecting trees were seen between sites, thereby suggesting that land restoration and tree planting projects should be site specific. Our data indicate that there are ample opportunities to increase native tree cover in our study sites and highlight the need to incorporate farmer input into project design, implementation, and evaluation as a necessary and continuous feature throughout projects.     

Growing Cloned Teak Seedlings for Small-Scale Farmers in Costa Rica

This paper investigates the profitability of cloned teak seedlings among small-scale farmers in the Canton of Hojancha in Costa Rica. A survey was conducted among small-scale farmers to explore their opinions regarding tree breeding. Most respondents considered that the use of improved seedling material is profitable and their willingness to plant clones in the future was high. The net present value of teak plantations at a 5% discount rate was estimated to be USD 12,330, USD 12,814, USD 14,284 and USD 14,308 per hectare for four non-genetically modified seedling plantations. According to a sensitivity analysis, the profitability of a teak plantation based on non-genetically modified seedlings is more sensitive to changes in timber prices than to changes in silvicultural costs. Investment in clone planting appears potentially highly profitable. With interest rates of 5 and 3%, it was profitable to plant clones if only 1% of genetic gain in volume was achieved and if the price of the clones was not greater than 50% of non-genetically modified seedlings.     

Application of a Small-Scale Equipment System for Biomass Harvesting

The small-scale harvesting equipment system has been and continues to grow in use in forestry operations in some regions in the world. This harvest system can include a range of equipment types, such as feller-bunchers or chainsaws, skidders or farm tractors, and chippers. These machines are generally smaller, lower cost and less productive than larger, more advanced forestry machines. The objective of this project was to investigate the feasibility of a small scale harvesting system that would produce feedstock for a biomass power plant. The system had to be cost competitive. A boom-type feller-buncher, a small grapple skidder and a chipper were tested as a small-scale system. In this study, feller-buncher and skidder productivity was determined to be 10.5 m³ per productive machine hour, and production for the chipper was determined to be 18 m³ per productive machine hour. Production from the system did not reach the desired levels of 4 loads/day (25 m³/load); however, the system was able to produce about 3 loads/day. The results showed that the system currently could fill a roadside van for $16.90/m³, but suggested machine modifications could potentially reduce the system cost to $12.73/m³. Residual stand damage was minimal, especially on flatter ground and not operating on a slash layer. Soil disturbance from the harvesting system was predominantly undisturbed or classified as a shallow disturbance.     

改善火力发电厂燃煤堵塞现象的几项措施

通过对电厂及锅炉房的实地调查,分析了燃煤系统中的堵塞现象,提出了几项解决方式,为设计及运行单位提供了良好的措施。     

湿地公园的场地规划与设计

综合运用场地设计理论,从生态系统的完整性要求出发,在大尺度场地规上来确定湿地公园的范围和大小,利用生态主导因素来确定中尺度的公园功能分区从使用者的感知上来考虑,在小尺度角度上设计景观(点)的位置、大小和边界。     

浅析发电厂总图设计及其对环境的影响

作者依据设计体会,论述了总图设计专业在设计热电厂的总平面布置时,在综合各种因素的前提下,统筹安排全厂建筑物、构筑物的位置,为热电厂的安全生产、方便管理、节约用地和控制工程造价方面创造了条件,使热电厂的总体达到"安全可靠、经济适用、符合国情"的要求。