转炉煤气的回收及利用

转炉煤气是炼钢生产过程中的重要副产能源,如何实现转炉煤气的充分回收和利用是负能炼钢和降低能耗的重要环节。通过对产生转炉煤气的影响因素和回收潜力的分析,结合宝钢转炉煤气系统的组成部分、能力配置、地域分布和使用特点的实际配置,论述了在炼钢正常生产情况下,实现煤气全量回收的系统使用平衡能力和影响因素,以及COREX煤气引入后对转炉煤气系统平衡的影响,并就进一步提高转炉煤气回收和利用水平提出了建议。     

国内转炉煤气回收利用技术的现状及发展

从烟气冷却及净化系统、引风机及切换、放散系统、转炉煤气贮存及输配系统等方面论述了我国炼钢转炉煤气净化回收、储存及利用技术的现状和发展趋势。     

攀钢转炉煤气回收系统存在问题及其改造措施的探讨

转炉煤气回收利用是氧气转炉炼钢降低工序能耗、消除环境污染的主要措施。就国内外转炉煤气回收状况，攀钢炼钢厂１２０ｔ转炉实现煤气回收的经济效益，现有转炉煤气回收系统存在的问题，以及必须对其采取的改造措施作了探讨。     

转炉煤气柜运行方式的探讨

转炉煤气是炼钢生产过程中的重要副产能源,如何实现转炉煤气的充分回收和利用是负能炼钢和降低能耗的重要环节。通过煤气柜运行方式的改变,可提高煤气柜的利用效率,使多座煤气柜相互配合,增大煤气回收量,为企业创造效益。     

30t转炉煤气回收设计及生产实践

转炉煤气的回收利用是氧气炼钢工艺中降低工序能耗、消除环境污染的主要技术措施,其净化回收系统也已成为转炉炼钢必不可少的设备,因此,必须不断改进转炉煤气回收的设计,并注意它在生产中的问题。本文就唐钢二炼钢厂30t转炉煤气回收系统的工艺流程和特点,并结合生产实践对转炉烟气净化、煤气回收、煤气柜的气密性和吹扫工艺的实施,以及实际经济效益等问题进行了介绍和评价。     

转炉煤气风机三通阀改造必要性及效果研究

酒钢宏兴股份公司炼轧厂炼钢1#转炉-3#转炉净风机系统能力不足。根据炼钢风机转炉煤气三通阀系统的使用现状,从转炉煤气回收风机三通阀入手,对煤气回收装置从设备、工艺和管理角度进行安全性分析,研究了改造的必要性并提出相应的改造方案,予以实施;对实施后的效果进行论证。     

南钢转炉实现"负能"炼钢的探讨

通过对转炉工序能耗分析,论述了回收二次能源在炼钢工序中的重要性.介绍了南钢65 t转炉蒸汽、煤气回收利用的工艺流程及实现蒸汽、煤气回收利用所开展的一些工作,探讨了南钢转炉实现"负能"炼钢的途径.     

提高转炉煤气回收利用技术实践

通过对炼钢转炉煤气回收、利用现状进行研究和分析,找出了转炉煤气回收利用过程中存在的问题,并开展提高转炉煤气回收量技术研究和实践,解决了目前制约转炉煤气回收利用的主要因素,提高了转炉煤气回收量,进而提高了钢铁企业二次能源利用效率。     

要大面积推广转炉负能炼钢

转炉在炼钢过程中，需要消耗大量的能源，同时，炼钢工艺过程中产生的物理显热及CO气体，又能够通过不同的方法加以回收利用。转炉炼钢的能耗主要来自于氧气、电和水为主的动力消耗（大约为35．4kg／煤）。如果对转炉煤气和蒸汽进行回收，回收煤气的可利用热量大于实际能耗，转炉工序也就实现了负能炼钢。     

南钢转炉实现“负能”炼钢的探讨

通过分析转炉工序能耗，了解回收二次能源在炼钢工序中的重要性。介绍了南钢65t转炉蒸汽、煤气回收利用的工艺流程及实现蒸汽、煤气回收利用所开展的一些工作，探讨了南钢转炉实现“负能”炼钢的途径。     

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.