脱硫塔滤料遗失原因分析及防治措施

脱硫塔是天然气处理的关键设备之一,设备完好性、适用性直接影响天然气脱硫效果和产晶质量。南堡作业区在用脱硫塔13台,2013年投用以来,底排污腔存在积液,弱化脱硫效果,影响脱硫塔正常运行,脱硫塔内部构件腐蚀损坏后导致塔内滤料漏失,影响下游天然气处理设备和管道平稳运行,本文以NP3-2转油站内脱硫塔滤料遗失成功治理为例,积累经验,为脱硫塔维护运行和检维修提供技术支持。     

二龙山水库流域土壤资源与可持续利用研究

介绍了二龙山流域的土壤分类系统,对土壤资源分别进行了总体评价和质量评价,指出了二龙山土壤资源存在的问题,并针对存在问题提出了土壤资源可持续利用的建议.      

汽车排气污染影响因素分析

目前,汽车排气污染已成为城市空气污染的主要因素。江苏油田通过对汽车尾气的现场监测,以及尾气治理中的一些问题分析,总结出影响汽车尾气中污染物浓度的六大因素,并提出相应的解决措施。     

EWP高效污水净化器用于重金属污水治理的试验

电池生产过程排放的污水含汞、锌、锰等重金属污染物和COD等有机污染物。该试验通过调节污水的pH值(7.5～8.5),利用进入EWP高效污水净化器的污水自身生成的Zn(OH)₂絮凝沉淀物形成的吸附过滤流化床对污水进行净化。试验结果表明可达到:出水的汞为0.000 92 mg/L,去除率为96.2%;锌去除率为99.1%;锰去除率为55.1%;COD去除率为19.6%;BOD去除率为28.3%。      

FP(FilterPacks)法同时测定大气中的SO2和颗粒物

用二层采样头同时采集大气中的二氧化硫和颗粒物的方法。分别用国产玻璃纤维滤膜和中速定量滤纸,1％K₂CO₃－10％Gly溶液制作浸渍膜,两种浸渍膜现场采集二氧化硫的效率分别为99．4％和95．7％。通过降低碳酸钾溶液浓度(由25％降为1％)及使用强酸性阳离子交换树脂,大大降低了样品中碳酸根离子的浓度,减小了基体效应,提高了测定硫酸根离子的准确度和灵敏度。经测定,1％K₂CO₃－10％Gly溶液浸渍膜(90mm)对二氧化硫的采集容量为160 μg／cm2。试验结果表明,浸渍膜法和盐酸副玫瑰苯胺法测定大气中二氧化硫的结果相近,相对偏差为4．3％,两种方法测定二氧化硫浓度有着良好的线性关系(r＝0．993)      

An Approach for Recreation Suitability Analysis to Recreation Planning in Gölcük Nature Park

Gölcük Nature Park (GNP) is an area protected by law in Turkey. It is an important nature park with rich flora, fauna, geomorphologic forms, landscape features, and recreational potential in the region. However, GNP does not have a recreation management plan. The purpose of this study was to determine the actual natural, cultural, and visual resources of GNP, determine the most suitable recreational sites with multiple factors, evaluate the demands and tendencies of visitors, and suggest recreational activities and facilities for the most suitable sites of GNP. However, it was also conceived as leading to a recreational plan and design of GNP in the future and identifying the entire appropriate and current data of GNP with the creation of various maps. This study used multifactor analysis to determine the most suitable recreation sites of GNP. Used recreation factors were established including degree of slope, proximity to water resources, accessibility, elevation, vegetation, soil, climate, aspect, current cultural facilities, visual values, and some limiting factors in accordance with the characteristics of GNP. Weighting and suitability values of factors were determined by 30 local expert surveys. All obtained data were evaluated and integrated in the Geographical Information Systems base. Obtained maps were overlapped. Thus, recreational suitability zones map were created manually. However, the demands and behaviours from visitor surveys in GNP were focused on the most suitable recreation sites of the park. Finally, 10% of GNP was identified as the most suitable sites for recreational use. Various recreational facilities and activities (including picnicking, sports facilities and playgrounds, camping sites, walking paths, food and local outlets, etc.) were recommended for nine of the most suitable areas on the proposed recreational map.     

基于多速率卡尔曼滤波方法的位移和加速度数据融合

为了尽可能地利用加速度传感器和位移传感器中的冗余信息、提高振动实测数据的精度,将结构同一位置的加速度和位移观测值进行数据融合处理,提出了一种基于维纳过程加速度模型的多速率卡尔曼滤波数据融合方法。首先给出了基于维纳过程的多速率卡尔曼滤波数融合模型;然后在加速度和位移观测值的基础上,通过多速率卡尔曼滤波数据融合得到位移、速度以及加速度的的最优估计,并对融合结果进行卡尔曼平滑处理,进一步提高了状态估计准确性;最后数值分析了不同噪声水平和采样频率比对融合算法的影响,而且与相关文献的结果作了对比分析。结果表明,本文方法合理有效且具有一定的噪声鲁棒性。     

Filter badge SO_2捕集-离子色谱法测定空气中二氧化硫

用Filter badge SO2捕集空气中SO2。用双氧水将捕集到的SO2氧化成SO42-,再用离子色谱法测定SO42-的浓度,按公式f SO2=2082×103×(T/τ)X计算,即可得到捕集时间内的平均SO2浓度f SO2(ppb)。