峨口铁矿1932排土场稳定性对泥石流形成的影响

本文针对山西峨口铁矿1932排土场稳定性问题讨论了排土场稳定性对泥石流形成的影响,通过现场调查、观测并结合室内模型实验及理论计算,作者认为:岩土混排,土场基底充分饱水和暴雨泾流是该土场可能形成泥石流的根本原因。     

500t/d逆推式炉排炉工艺设计

介绍一种新研发500 t/d逆推式炉排炉的特点以及相关工艺参数设计计算。     

Performance characteristics of turbo blower in a refuse collecting system according to operation conditions

A simulator for a refuse collecting system is designed to investigate the performance characteristics of a turbo blower operating at different rotational frequencies. The simulator consists of an air intake, a waste chute, circular duct, waste collector and turbo blower. Experimental measurements and numerical simulation with three-dimensional Navier-Stokes equations have been performed to analyze the performance of the turbo blower. Throughout numerical simulation of the simulator, it is found that the input energy of the blower can be reduced by controlling the rotational frequency of impeller while the efficiency of the blower keeps constant. The required outlet pressure and flow rate of the blower can be also adjusted along the system resistance of the refuse collecting system. Detailed flow characteristics inside the blower are analyzed for different rotational frequencies. This paper was presented at the 9^th Asian International Conference on Fluid Machinery (AICFM9), Jeju, Korea, October 16–19, 2007.     

垃圾焚烧系统除尘器选择及对水泥窑协同处置固废系统尾气除尘设备的借鉴

从粉尘治理、二噁英排放等角度阐述了生活垃圾焚烧设施采用袋式除尘设备的原因。结合国内目前对大气环境的治理要求、水泥窑粉尘排放的特点,对比分析了水泥窑协同处置固体废物与垃圾焚烧在尾气处理系统的差异,提出了水泥窑协同处置固体废物时尾气除尘设备选择上应该考虑的因素。     

热电厂知动控制技术及发展趋势

本文简要叙述了热电厂自动控制技术现状及发展,现场总线标准及FCS控制系统实施策略,建议了垃圾焚烧烟气分析仪国产化,以及仪电集控IEC化。     

含氧量对小型生活垃圾焚烧炉污染物排放监测结果的影响

从对小型生活垃圾焚烧炉污染物排放监测实践结果中，总结分析了烟气含氧量对烟尘排放浓度的重要影响关系。指出了含氧量测定不应随机测取，至少应测定3个投料周期取平均值，提出了控制烟气含氧量的建议。     

一种新型固体废物焚烧炉

本文介绍了一种新型固体废物流化床焚烧炉的工作原理及结构,并分析了该装置与传统流化床焚烧炉相比较所具有的优点     

城市垃圾焚烧底灰的综合利用

随着中国城市化的进程日益加快,城市生活垃圾的产生量日益增加,对人们的生活质量的提高和社会的可持续发展产生了阻碍。焚烧处理技术的应用可大大降低生活垃圾的存量,但由此产生了大量的焚烧灰渣。该文对垃圾焚烧灰渣的基本特性和资源化利用的研究现状进行了综合评述,提出比较适合我国经济条件与环境要求的灰渣管理与利用策略是在建筑工程和填埋工程中进行资源化利用。     

“断零”的危害和防范

阐述三相四线配电回路中中性线中断("断零")引发的诸多电气危害,介绍国际上和国内对防"断零"危害的不同措施。作者赞同国际电工标准采取多种措施避免"断零"的发生,从根本上杜绝"断零"引发诸多电气危害的对策。对我国有关规范以过欠压防护电器防范"断零"的规定提出质疑。     

Approaches adopted to assess environmental impacts of PCDD/F emissions from a municipal solid waste incinerator

Different approaches were carried out in this work to assess environmental impacts of a municipal solid waste incinerator. A total of seven sites in the vicinity of the facility were chosen to collect air, banyan leaf and soil samples for analyses of PCDD/Fs by high-resolution gas chromatography/high-resolution mass spectrometry. Based on the PCDD/F concentrations of the three matrices determined at sites upwind, downwind and area of maximum ground concentration, it was found that the environmental impact of the MSWI was not obvious. PCDD/F concentration isopleths of the three environmental compartments coupled with wind rose of the region proved that the influence of the MSWI on the environment was also rather limited. It clarified emission sources by confirming that the PCDD/F concentrations originated mostly from the existing stationary emission sources in the vicinity. Through principal component and cluster analyses on congener profiles, the influence of metallurgical facilities and medical waste incinerators on the ambient air was assessed. Moreover, the modeling of ISCST3 demonstrated also that the contribution of the MSWI to ambient atmospheric PCDD/Fs was minimal. The approaches studied have led to identical conclusions, and thus are useful to cross-evaluate the environmental impact of an MSWI.