气相色谱法测定二硫化碳和甲硫醚

利用气相色谱(配火焰光度检测器,采用3mxφ2mm玻璃填充柱分离)对CS2和甲硫醚(DMS)两种含硫化合物进行了分离检测。该方法具有较高的灵敏度和良好的线性关系。结果表明:该分析对含硫气体的最小检测浓度在mg/m3级,在柱温为70℃,检测器温度为180℃,气化室温度为150℃,氮气流速为50mL/min时,CS2的回收率为98.66%,变异系数为2.12%;甲硫醚的回收率为98.66%,变异系数为1.56%。     

脉冲电晕等离子体脱硫脱氮与除尘技术

脉冲电晕放电是产生等离子体的方法之一，目前已达到工业性试验阶段，该文对脉冲电晕等离子脱硫脱氮与除尘技术的形成过程进行了回顾，对其理论作了分析，并简介了工艺流程，还指出了目前存在的主要问题和需研究的关键技术。     

Developing Canada's National Forest Carbon Monitoring, Accounting and Reporting System to Meet the Reporting Requirements of the Kyoto Protocol

The rate of carbon accumulation in the atmosphere can be reduced by decreasing emissions from the burning of fossil fuels and by increasing the net uptake (or reducing the net loss) of carbon in terrestrial (and aquatic) ecosystems. The Kyoto Protocol addresses both the release and uptake of carbon. Canada is developing a National Forest Carbon Monitoring, Accounting and Reporting System in support of its international obligations to report greenhouse gas sources and sinks. This system employs forest-inventory data, growth and yield information, and statistics on natural disturbances, management actions and land-use change to estimate forest carbon stocks, changes in carbon stocks, and emissions of non-CO₂ greenhouse gases. A key component of the system is the Carbon Budget Model of the Canadian Forest Sector (CBM-CFS). The model is undergoing extensive revisions to enable analyses at four spatial scales (national, provincial, forest management unit and stand) and in annual time steps. The model and the supporting databases can be used to assess carbon-stock changes between 1990 and the present, and to predict future carbon-stock changes based on scenarios of future disturbance rates and management actions.     

Carbon Dioxide Balance of Wood Substitution: Comparing Concrete- and Wood-Framed Buildings

In this study a method is suggested to compare the net carbon dioxide (CO₂) emission from the construction of concrete- and wood-framed buildings. The method is then applied to two buildings in Sweden and Finland constructed with wood frames, compared with functionally equivalent buildings constructed with concrete frames. Carbon accounting includes: emissions due to fossil fuel use in the production of building materials; the replacement of fossil fuels by biomass residues from logging, wood processing, construction and demolition; carbon stock changes in forests and buildings; and cement process reactions. The results show that wood-framed construction requires less energy, and emits less CO₂ to the atmosphere, than concrete-framed construction. The lifecycle emission difference between the wood- and concrete-framed buildings ranges from 30 to 130 kg C per m² of floor area. Hence, a net reduction of CO₂ emission can be obtained by increasing the proportion of wood-based building materials, relative to concrete materials. The benefits would be greatest if the biomass residues resulting from the production of the wood building materials were fully used in energy supply systems. The carbon mitigation efficiency, expressed in terms of biomass used per unit of reduced carbon emission, is considerably better if the wood is used to replace concrete building material than if the wood is used directly as biofuel.     

碱性物质中和法在处理煤矿废水中的应用

凡是有地下煤矿开采的地区,都伴之有地下水排放.在面临全球性淡水缺乏的形势下,煤矿排放废水却作为污染源,日夜注入河床,致使环境保护部门为之大伤脑筋,而且各煤矿也为煤矿排放废水的治理,付出了很大的经济代价.因此如何解决煤矿排放废水达标排放的问题,使其能作为矿产资源和水资源得到再利用,解决即将到来的水荒危机就成为了本文讨论的重点.     

氨法烟气脱硫脱硝的技术特征

氨法烟气脱硫脱硝具有显著的技术优势:脱硫效率高,脱硫脱硝一举两得,不耗费热量不产生废渣,脱硫剂利用充分用量小,不损害设备有节能功效。脱硫剂利用率可达90%以上,脱硫效率可达90%以上、脱硝效率可达80%以上;脱硫剂用量是钙法工艺的十到二十分之一;副产物为可以直接利用的化学肥料,而非难于处置的废渣。     

共振腔消声器在煤矿风井噪声治理中的应用

对煤矿风井噪声产生的机理与特性进行了分析，提出了用共振腔消声器治理风井噪声的新方法，详细阐述了该方法所依据的理论基础，并以应用实例加以说明。     

废塑料与炼焦配煤共焦化产物的分析

利用2kg模拟焦炉，进行了首钢炼焦配煤与北京市石景山区生活垃圾中的废塑料的共焦化实验。研究结果表明，添加废塑料有提高焦油收率和减少水的收率的趋势；但添加废塑料对成焦率、焦油产率及水产率的影响随废塑料处理方法和废塑料添加比例的不同而有差异；采用废塑料型煤或废塑料型煤破碎物与配煤共焦化在提高废塑料添加比例方面具有较大优势。     

从自燃煤矸石中提取聚合铝铁(PAFC)的试验研究

采用盐酸酸浸的方法从自燃煤矸石中提取聚合铝铁，对煤矸石的粉碎粒径、酸浸盐酸的浓度及用量、酸浸的温度等工艺条件进行了试验研究。结果表明，从100g自燃煤矸石中，可提取19．85g固体聚合铝铁，成品的Al2O3含量33％、Fe2O3含量16％、盐基度70％。     

一起瓦斯事故后的思考

介绍了峰峰集团公司小屯矿14443回采工作面基本情况和瓦斯事故发生及处理经过,分析了事故原因,针对该事故从5个方面提出值得思考的问题.