三烧机头电除尘设计特点及调试运行

三烧技改工程是2002～2003年度武钢重点效益工程。与三烧技改工程同步，将三烧原4台多管除尘器改造为2台电除尘器。电除尘器采用了新的结构型式和极配型式。改造后的电除尘器运行稳定，除尘效率高，减少了污染，改善了环境，改造非常成功。     

液压滑移技术在大型电除尘器快速更新中的应用

结合宝钢一烧结电除尘器(ESP)更换的工程实例,将应用液压滑移这种机械设备安装新技术的施工工艺与常规施工工艺进行了对比。重点论述电除尘器滑移前施工要点如滑移台架搭设和旧ESP拆除,以及滑移过程中的设备选择、轨道导向和控制策略等。采用液压滑移技术更换大型电除尘器,可缩短施工工期,减小对连续生产的影响,简便快捷,安全可靠。     

脉冲电源提效技术在烧结烟气电除尘中的应用

由于国家对大气污染物重点排放源的管控越来越严格,钢铁行业超低排放改造已全面实施.本文以两个典型烧结烟气工程为例,分别采用PMU便携式烟尘采样仪、ELPI和PENTOL SO3分析仪在线测定烟气中的烟尘、PM2.5和SO3质量浓度,分析脉冲电源对干式和湿式电除尘器的提效特性.结果 表明:采用脉冲电源对干式电除尘器进行提效...     

浅谈提高烧结厂机头电除尘器的除尘效率

本文根据烧结厂机头烟气除尘普遍采用电除尘器除尘的现状,分析了影响烧结厂机头电除尘器除尘效率的因素,提出提高机头电除尘器除尘效率的技术措施.     

钢铁行业高湿烟尘湿式电除尘治理技术

介绍了钢铁行业高湿烟尘的特点及处理难度,烟尘治理系统及新型湿式电除尘器的结构和技术特点。工程应用结果表明,该烟气治理系统及湿式电除尘器能够满足高湿烟尘排放的环保要求。     

GTD型电除尘器在天津铁厂的应用

论述了GTD型电除尘器的电气部分的构成及收尘原理,对电除尘器采用微机控制器实现闭环控制的优越性及使用效果作了说明.     

菲律宾联合熔炼与精炼公司(PASAR)转炉电除尘器的安装

叙述了菲律宾联合熔炼与精炼公司(PASAR)转炉电除尘器的安装过程,该电除尘器在特定条件下采用预组装-整体吊装的方法,本文详细介绍了安装方案及吊装方案。     

新董事介绍

武乔章,男,汉族,1949年9月出生,江苏省泰兴市人,1970年参加工作,1987年9月-1990年9月带职在江苏省委党校经济管理专业学习,1992年获工程师职称,1995年加入中国共产党,1997年被推选为中国环保产业协会电除尘委员会委员,2002年被推选为全国交通工程设施标准化技术委员会委员,同年被评聘为高级经济师,泰兴市中青年专家,现任泰兴市电除尘设备厂厂长。长期从事电除尘器的研究开发和制造安装工作。他负责研制的开放式电石炉电除尘器填补了国内空白,负责制造安装的LD120型电除尘器性能达到国际先进水平,获原化工部科技进步二等奖和国家科技进步三…     

电除尘器提效改造技术研发及应用

电除尘器是烧结机头和燃煤锅炉烟气净化的主要设备,随着服役年限增加,除尘效率降低,难以满足日趋严格的环保排放要求。为了提高电除尘器的效率,研发出了移动极板电场和流场优化调整两项技术,将其应用于烧结机头电除尘器和燃煤锅炉电除尘器改造,取得了粉尘排放浓度降低40%~70%的显著效果,为已有电除尘器提效改造提供了范例。     

烧结机头电除尘器提效技术研究

随着烧结生产工艺的改变,机头电除尘器的工况条件也发生了变化,作为大型钢铁企业,排放达标对环保尤为重要.文章概述了为提高宝钢烧结机头电除尘器除尘效率进行的攻关研究,通过几种常见方案和技术发展趋势的分析比较,选择了经济、简捷、高效的技术路线.即不增大设备截面积和电场数,在原有电除尘器壳体内部,进一步开发和应用旋转电场、斜气流等先进技术,达到满足改造时限、经济而且高效的目标.进而开展试验研究,开发出多项新技术,制定了改造方案,应用于工程改造,取得了良好效果.     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.