联合软水密闭循环冷却新技术在武钢8~#高炉工程中的应用及创新

重点分析介绍了联合软水密闭循环冷却新技术在武钢8#高炉工程中的应用,阐述联合软水密闭冷却新技术的技术参数、工艺流程等,分析了联合软水密闭循环冷却技术在武钢8#高炉设计中的特点及创新点,并与其他循环冷却技术进行了比较。     

高炉软水密闭循环冷却技术在宝钢、包钢应用

由武汉钢铁（集团）公司能源总厂供水厂研制开发的高炉软水密闭循环冷却技术是一项强化高炉生产、延长高炉使用寿命的关键技术，该技术已在宝钢、包钢推广应用，取得了良好的经济效益、环境效益和社会效益。该技术的基本原理是高炉软化水为冷却介质，软水在循环使用过程中不与大气接触，从高炉吸收过来的热量通过二次水转移出去。与采用直接冷却方式或敞开式循环冷却方式相比具有明显的优点：水质好、腐蚀小，水循环使用率达９９．９％，传热效率高，冷却效果好，节水、节电显著；自动化程度高；安全可靠。该项技术采用高炉软水密闭循环冷却…     

掌握软水密闭循环冷却技术 提高我国高炉冷却技术水平

本文对较大型高炉采用的不同冷却方式进行分析比较，介绍具有９０年代先进水平的我国第一座全部采用软水密闭循环冷却方式的现代化大型高炉冷却水系统，并以该高炉投产一年多的生产运行结果为基础，分析评价采用软水密闭循环冷却方式对延长高炉寿命，确保高炉强化生产和节水节能所产生的综合效益。认为软水密闭循环技术是重大的技术进步，在我国已有成功经验，应推广采用，以提高我国高炉冷却技术水平，取得更大经济效益和社会效益。     

高炉软水冷却系统设计若干问题的探讨

对高炉软水密闭循环冷却系统设计若干问题,如联合软水系统与独立软水系统,风口小套是否单独设置工业水开路循环冷却,以及几个冷却参数的选取等进行了探讨。建议:①新建高炉应优先采用联合软水密闭循环冷却系统,风口小套冷却并入联合软水系统;②分段调水量作用非常有限,高炉冷却应采用一串到顶的工艺流程;③冷却壁基准流速取1.6m/s,最大流速取2.0m/s;④合适的冷却比表面积范围应在0.9～1.2,炉缸部位的冷却比表面积不小于1.0。     

高炉风口小套软水密闭循环设计分析

通过对高炉风口小套不同循环水冷却工艺流程、特点及其经济效益进行比较,建议采用高炉风口小套单独软水密闭循环冷却工艺,这对钢铁厂节水节电,降低运行费用,提高经济效益和节约成本具有重要意义。     

高炉的软水闭路循环冷却

软水闭路循环冷却是延长高炉炉体寿命行之有效的措施,具有可靠性高、水耗量少、经济效益显著等优点。联邦德国许多高炉都采用了这一冷却方式,已有十几年的生产运行经验。鞍钢2号高炉自1987年10月26日采用这一冷却方式以来,也获得了显著的效果。作者建议,在鞍钢其他高炉大修时,应把开式工业水冷却系统改成软水闭路循环冷却系统。     

高炉水冷却工艺的技术比较和经济分析

以2500m3高炉为例,通过对不同循环水冷却工艺流程、特点及其经济效益进行比较,建议采用高炉各部分软水密闭循环冷却工艺和蒸发式空冷器换热设备,以利于钢铁厂节水节电,降低运行费用。提高经济效益和节约成本。     

高炉软水密闭循环冷却工艺分析及运行实践

介绍了八钢430m3高炉及2500m3高炉软水密闭循环的实际运行经验，目前国内软水密闭循环冷却工艺比较及设备发展趋势，提出更有利于高炉冷却系统稳定运行的建议。     

包钢6^#高炉铁口冷却壁修复技术

包钢6#高炉采用软水密闭循环冷却形式.由于冷却壁铸造质量存在缺陷,高炉投产前的打压查漏过程中,认定2#号铁口冷却壁第160#管和4段冷却壁第85#管坏;通过对这两根冷却管进行修复处理,取得较好的效果.     

涟钢1号高炉软水密闭循环冷却系统改造

涟钢1号高炉大修扩容改造时,在高炉炉体及热风炉冷却系统采用了先进的软水密闭循环冷却系统,回水冷却采用表面蒸发式空冷器。高炉投产后运行效果好,补水量少。     

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)     

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.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.