马钢焦炉煤气脱萘工艺与国内其他工艺的比较

对比了国内既有的典型煤气脱萘工艺的工艺路线、设备及消耗。介绍了马钢开发的焦炉煤气脱萘工艺,该工艺在初冷工序的横管初冷器内完成煤气的一步脱萘。工业应用的效果明显。煤气净化单元的后续工序不设置其他脱萘工序。     

韶钢精制焦炉煤气脱萘技术的发展与应用

介绍了韶钢精制焦炉煤气脱萘技术的应用情况,针对韶钢现有的几种不同脱萘工艺的优缺点进行分析,提出节能、环保型干法脱萘技术是企业今后精制焦炉煤气脱萘技术的发展方向。     

单塔脱苯工序标定及改进

济钢焦化厂对单塔脱苯工序进行标定，找出了脱苯塔重苯和萘抽两侧线温度低的原因，并对工序中不合理的工艺及参数进行优化调整，使单塔两侧线温度提高到工艺设计要求，侧线产品合格，洗油消耗由148kg／t苯降至90kg／t苯，轻苯收率由0．97％提高到1．05％以上，实现了工序质量的长期稳定。     

初冷器冷凝液在煤气直冷塔洗萘中的应用

鼓冷工段横管冷却器冷却焦炉煤气下来的带轻抽焦油的冷凝液,用于煤气直冷塔在冷却煤气同时进行洗萘,代替粗苯工段的富油冼萘工艺,为净化焦炉煤气中的萘提供了可靠的依据。     

焦炉煤气精脱系统再生工序存在问题与改进措施

针对焦炉煤气精脱系统再生工序在运行过程中存在的问题,分析查找原因并对其采取改进措施,提高了焦炉煤气精脱系统再生能力,减少了焦炉煤气再生管道堵塞的安全隐患。     

提高焦炉煤气脱萘效率的生产经验

介绍了马钢新区煤气净化工艺，分析了焦炉煤气脱萘过程中遇到的问题，提出了改进措施，取得了较好的脱萘效果。     

洗油洗萘在焦炉煤气精制工艺中的应用

焦炉煤气精制装置普遍采用干法脱萘工艺,产生富含杂质且高腐蚀性解吸气。实践证明,脱萘解吸气消耗产品气的同时,深度危害流经的管道、阀门、烧嘴、仪表导管等设备。介绍了马钢挖掘焦油洗油粗洗萘装置潜能,实现"一站式"脱萘,停役干法脱萘单元,并总结了洗油洗萘装置的使用、维护及改进方法。     

电捕焦油器连续稳定运行的探讨

首钢京唐公司能环部燃气厂设置有两台电捕焦油器,小时处理煤气量80000 m3/台,主要用来对来自焦化的焦炉煤气进行二次净化,净化后的焦炉煤气经过精制脱硫脱萘和压缩机加压后,供给炼钢加热炉使用。如果二次净化后焦炉煤气中焦油含量过高,极易造成炼钢工序烧嘴前过滤器堵塞,导致炼钢检修频繁甚至堆钢停产。总结探讨了电捕焦油器停机的可能原因,并提出了改进措施。     

焦炉煤气脱萘系统再生方法的探讨

首钢京唐公司燃气厂现有两套焦炉煤气精制设备,分两步建设,均采用固定床脱硫净化工艺和变温吸附(TSA)净化工艺,脱硫剂定期更换,脱萘剂通过再生可以循环利用,但再生方式却不同。一步用蒸汽直接再生,二步用热煤气再生。通过生产实践研究探讨这两套精制装置不同的脱萘过程,从脱萘效果、脱萘时间、操作过程和对环境的影响等方面对比其优缺点。     

焦炉煤气净化系统的工艺优化

阐述了煤气净化系统的运行状况,对生产中存在的问题进行了分析,通过采取初冷系统在线工艺优化、硫铵工序饱和器并联运行及技术改进、强化蒸氨操作、脱苯工序强化洗萘操作及设备改造等措施,减少了系统运行阻力,提高了化产品收率。     

Some fundamentals of B. F. Skinner's behaviorism.

Despite B. F. Skinner's prominence, his impressive written corpus, and the many authoritative presentations by others of his approach to psychology, the fundamentals of Skinner's psychology have never been addressed in any comprehensive manner. In this article, the authors take steps to fill this gap by synopsizing Skinner's written corpus into 12 fundamental points that seem to characterize his behaviorism. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Educators' perceptions of the D.A.R.E. program

This study examines the perceptions of educators about the Drug Abuse Resistance Education (D.A.R.E.) program, based on the results of a statewide survey among 286 fifth and sixth grade teachers and principals. Educators gave their highest ratings to teacher/officer interaction, the role playing exercises, and the graduation ceremony. Ratings of overall program quality and the impact of the program on students were both high. Block regression analysis was used to examine factors predictive of educators' views of D.A.R.E. D.A.R.E. program elements were the most important factors explaining variance in educators' ratings of over-all program quality and program impact on students. Altogether, 54 percent and 38 percent of the variance in both dependent variables were explained. The results are discussed in terms of the important role teachers and principals play as stakeholders in prevention education.     

Racemose angiomatosis. Comments on the article of D.E. Matsko and I.A.Sokolova. Racemose angioma of the nervous system: tumor or developmental defect? Vopr. onkol. 1966. V.42, No.6. p.91-96

Diversion colitis is thought to result from nutritional deficiencies secondary to fecal diversion. Symptoms include hemorrhagic purulent rectal discharge, abdominal pain, and tenesmus. 5-Aminosalicylic acid (5-ASA) and N-butyrate enemas have been reported to help this condition non-spinal cord injury (SCI) patients. We report the case of a 49-year-old C6 ASIA B tetraplegic man who had received colostomy because of intractable ileus 10 years earlier. He presented with a 2-week history of rectal pain and bleeding. Abdominal and rectal examination on admission were unremarkable. Colonoscopy showed a partial stricture 70cm proximally to the rectum. The colonic mucosa appeared granular and friable with evidence of linear ulceration. Histopathologic study was consistent with colitis. The patient developed fever, abdominal distention, and extensive retroperitoneal air after endoscopy, suggesting colonic perforation. He was treated with daily 5-ASA suppository and total parenteral nutrition for the presumed diagnosis of diversion colitis, and intravenous antibiotics for perforated colon. After 6 weeks of treatment with 5-ASA, the patient had decreased rectal pain and bleeding. This experience suggests that diversion colitis may be a cause of abdominal discomfort in SCI patients and that 5-ASA may be used in the management of diversion colitis.     

小方坯连铸机的切割设备

现在采用的小方坯连铸机的切割设备，分为机械剪和火焰切割机，机械剪包括电动机械剪和液压剪，而液压剪又有平剪刃和４５°剪刃之分，火焰切割机则分为有动力传动和无动力传动的火焰切割机，对这些切割设备的结构特点和优缺点均进行了分析介绍。     

Structural bonding contributions and the elastic response of b.c.c. and f.c.c. crystals

The anisotropic elastic response of body centered cubic (b.c.c.) and face centered cubic (f.c.c.) crystals is reviewed within the framework of general elasticity and particular model dependent relations. It is found that important trends in the observed behavior of specific groups of crystals can be reproduced by models that include only structural contributions to crystal binding. In fact, a very simple model, consisting of only nearest and next nearest neighbor interactions, reproduces the salient behavior, including the algebraic signs of Poisson's ratio and the orderings of the shear moduli, Young's moduli, and Poisson's ratios associated with major crystallographic symmetries. The analysis provides insight into the differences between the b.c.c. transition metals and the b.c.c. alkali metals.