使用COG加热时6 m焦炉烟气NO_x控制措施

山钢股份莱芜分公司焦化厂6#焦炉使用焦炉煤气加热,分析认为,空气过剩系数、加热换向间隔时间、加热温度等影响烟气中氮氧化物浓度,通过热工调节,缩小风门降低机焦两侧空气过剩系数至1.12、1.08,换向时间由30 min调整到20min,标准温度由1 245/1 295℃降至1 235/1 285℃,氮氧化物浓度由612 mg/m~3逐渐降低至440 mg/m~3,实现了达标排放。但在结焦时间较短,标准温度较高时,焦炉热工调节对氮氧化物浓度作用较小。     

6 m焦炉长期使用焦炉煤气的热工研究

通过对6 m大容积焦炉长期使用焦炉煤气加热进行热工研究,解决使用过程中出现的问题,总结出使用焦炉煤气加热时合理的热工制度.     

攀钢晚期焦炉温度管理现状分析及对策

由于攀钢5.5m大容积焦炉炉龄长,焦炉温度波动大,增加了晚期焦炉热工管理的难度,分析认为,主要是炉体老化、炉料状态和立火道温度的影响。为此,提出了强化热修和加热程序控制等措施进一步稳定了炉温,确保了晚期焦炉温度正常,焦炭成熟均匀。     

八钢6m焦炉低负荷生产的加热控制

文章介绍了八钢6m焦炉长结焦时间下的热工管理实践。通过合理编排出炉计划,加强焦炉炉体的维护,确定不同周转时间下的标准温度,采取调整炉头、横排、直行温度等加热制度措施。实现了长结焦时间较低标准温度下各项热工技术指标有保障的生产模式。     

焦炉应用高辐射覆层涂料的传热机制和节能效果

 酒钢焦化厂5号捣固焦炉应用了高辐射覆层技术, 6号捣固焦炉没有应用。热工测试组对5、6号焦炉进行了各项热工参数和节能涂料全面有效的对比检测。结果表明：5号焦炉比6号焦炉传热效率提高635%,焦饼中心温度提高14℃,废气温度降低了23℃。每年可节约焦炉煤气420.48×104m3,节能率为3.32%。炉窑统一热效率提高1.99%,炼焦耗热量降低了81.8kJ/kg（湿煤含质量分数7%的水）。每年CO2排放量减少1325×104 m3,获得了较为明显的经济效益和社会效益。并提出了进一步降低炼焦耗热量的途径。     

莱钢3^#焦炉热工模型控制

通过分析焦炉加焦炉加热过程的工艺特点，以莱钢3^#焦炉控制系统为例，提出了建立焦炉热工模型的方法，并简介了焦炉控制系统的构成。     

鞍钢7 m焦炉降低炼焦耗热量生产实践

鞍钢股份有限公司鲅鱼圈钢铁分公司炼焦部以焦炉物料平衡和能量平衡为基础,对焦炉热量传递全过程中影响炼焦耗热量的各种因素进行分析,通过采取优化加热煤气排水工艺、改进煤气孔板和空气过剩系数控制方法以及焦炉炉体密封工具等措施,优化了焦炉热工管理,炼焦耗热量明显改善。     

6m焦炉投产初期的热工管理

简要介绍焦化厂6m焦炉投产一年多以来的生产现状，整改措施和焦炉热工管理。     

武钢7.63m焦炉空间温度探讨及应对措施

武钢7.63 m焦炉投产后空间温度达到980 ℃,特别是焦炉处于超负荷生产期间给焦炉安全生产带来极大威胁.通过降低加热煤气支管压力、降低标准温度、调节α系数、提高煤线等技术手段可以将空问温度控制在900 ℃左右,对有效缓解焦炉石墨堆积、稳定焦炉生产起到重要作用.     

煤气的使用与管理

肥城市焦化厂制定经济合理的配煤比，稳定煤气发生量，严格执行焦炉加热制度，加强焦炉热工管理，强化煤气计算工作，最大限度地增加了煤气外供量，提高了经济效益。     

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.