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1.
雍海泉  程奇伯 《钢铁技术》2007,(6):30-32,42
结合理论研究,设计开发了蜂窝状蓄热体热态实验研究的平台,详细制定了工作平台的工艺参数、工作原理和工艺流程,为研究蜂窝陶瓷蓄热体的各项参教对蓄热室传热特性和阻力特性的影响、研究蓄热室的断面形状和蜂窝陶瓷蓄热体的流道长度等结构参数对蓄热室传热特性和阻力特性的影响、研究换向时间、蓄热体内气流速度、燃烧热负荷等操作参数对蓄热室传热特性和阻力特性的影响等工作奠定了基础。  相似文献   

2.
美国蓄热式烧嘴的研究与发展   总被引:1,自引:0,他引:1  
李书灿 《工业炉》1990,12(3):54-58
一、双蓄热床烧嘴系统蓄热式烧嘴是一种组合式烧嘴系统,每个系统有两个蓄热床,因此又可叫做双蓄热床烧嘴系统。这种系统采用了具有较高的蓄热和放热能力的新材料。这种新材料还可以设计出几何结构紧凑和小巧玲珑的蓄热床。这种蓄热式烧嘴系统,具有较短的换向周期,因此换热效率较高。这一系统能够广泛地应用于间歇式炉、再加热炉、辐射管炉和连续加热炉等各种炉型。  相似文献   

3.
新型蓄热燃烧装置是实现高温空气燃烧技术的关键设备。介绍了蓄热式燃烧的优点,蓄热燃烧装置的选用原则、主要形式及参数设计方法。  相似文献   

4.
中型蓄热式加热炉技术特点   总被引:1,自引:1,他引:0  
根据蓄热式加热炉的技术特点,结合中型生产的实际情况,优化蓄热室设计,合理选用换向阀,采用更适合的控制技术,设计出了节能、维修量小、安全稳定的蓄热式加热炉,并取得了良好的使用效果。  相似文献   

5.
分析了影响蓄热烧嘴性能的各种因素,采用计算机数值模拟方法对直接影响钢坯加热质量、加热能力的蓄热式烧嘴完成了数学模型和数值模拟计算,并依据模拟结果对蓄热式烧嘴进行了结构优化设计。  相似文献   

6.
蓄热燃烧技术是目前最先进的节能技术.宝钢技术中心结合宝钢的应用工况,自行开发了蓄热燃烧系统(包括蓄热烧嘴、蜂窝体和换向阀等关键设备),开发的系统在专门设计的蓄热中试炉进行了应用,系统的性能先进,可以满足工业应用.  相似文献   

7.
蓄热式烧嘴热工特性分析   总被引:1,自引:1,他引:0  
根据蓄热烧嘴热工特性,对轧钢加热炉采用蜂窝蓄热烧嘴中出现的一些问题进行了分析,总结出合理的蓄热烧嘴的结构、蓄热体尺寸、预热气体流量、烧嘴换向时间等热工参数,提出蜂窝蓄热烧嘴在实际设计中应注意的几个方面,使其发挥更好的换热效果。  相似文献   

8.
在详细分析了蓄热式高温空气燃烧技术的主要特点的基础上,针对某公司拟开发的"蓄热式高温空气燃烧实验炉"的设计要求,进行了数值优化计算和控制方案设计.所设计的实验炉其主要特点表现在以下几方面:蓄热烧嘴及蓄热体可方便拆装,便于对不同材质和不同结构的蓄热式烧嘴进行研究;设有数根可灵活调节流量的炉底冷却水管,保证实验期间的炉温稳定;在蓄热体内和炉膛等重点研究对象中都埋有数量不等的热电偶,可通过监控画面、历史趋势、数据报表等方便地得到相关实验数据;实验炉的上位机组态软件采用著名的工控组态软件iFIX,使控制系统具有良好的开放性、安全性和扩展性.所设计的"蓄热高温实验炉"为今后进行高水平的实验研究提供了稳定可靠的实验平台.  相似文献   

9.
介绍了韶钢中板蓄热式加热炉的设计及应用情况 ,对设计中碰到的各种问题进行了分析 ,阐明了蓄热燃烧技术应用在中板蓄热式加热炉上的效果及前景  相似文献   

10.
陈巍  方会斌  秦文 《冶金能源》2007,26(3):39-42
论述了蓄热式钢包烘烤器的设计关键,计,介绍该技术在首钢第二炼钢厂的应用效果,办法。即烧嘴的设计、蓄热室的设计和换向阀的设并对存在的问题进行分析,初步找到了解决  相似文献   

11.
In order to maximise the reduction of pig iron cost in an ironmaking process, and at the same time ensure the output and quality of the pig iron, a design and optimisation system for the charging ingredients and structure in an ironmaking system was established using metallurgical theory. The system includes six modules, namely, sinter metallurgical performance testing and analysis, sintering burdening design, sinter component and property prediction, blast furnace burdening design, blast furnace batching calculation and ironmaking system burden optimisation. Based on actual production, testing and material balance theory, the system integrated these modules on VB and MATLAB using a series of intelligent algorithms, such as the BP neural network, multiple objective linear programming, genetic algorithms and so on. As a result, the optimum burden composition and structure of the sinter and blast furnace that satisfied all the constraint conditions could be obtained. Standing as a pinnacle of the global ironmaking production, the system can design and optimise not only the sintering burden, but also the blast furnace burden. Compared with the traditional production testing and hand calculation in the ironmaking system, the project can greatly reduce the production risk and greatly increase the calculation accuracy. Industrial application shows that the system is especially beneficial to reduce the ironmaking cost and at the same time ensure the output and quality.  相似文献   

12.
For counseling settings, research suggests that softness, personalization, and order might affect the experience and the perceived expertness, trustworthiness, and social attractiveness of the therapist. This article discusses exploratory studies on college students' perception of the counseling office environment and whether the likely client experience was associated with the softness/personalization and order of the office. As stimuli, the studies used 30 color photographs of psychotherapists' offices viewed from the client's perspective. After obtaining ratings of the characteristics of each office, we obtained ratings from different groups of students of the quality of care and comfort expected in each office (Study 1) and how qualified, bold, and friendly the therapist in the office would be (Study 2). Additional studies examined the likelihood of choosing a therapist based on the office, and the first thought or feeling that came to mind about the office, the therapist, and the patient experience. There were strong correlations in response between groups (by whether they had experienced therapy; their level in school; their gender; and their major, location, and school size). The quality of care, comfort, therapist boldness, qualifications of the therapist, and the likelihood that one would choose a therapist based on the office improved with increases in the office's softness/personalization and order. Friendliness improved with increases in softness/personalization. The office choices, open-ended responses, and reported reasons for the ratings confirmed the importance of softness (comfort) and order. Research should test longer term exposure and behavior. (PsycINFO Database Record (c) 2011 APA, all rights reserved)  相似文献   

13.
The best location in the inner solar system for the grand observatories of the 21st century may be the Moon. A multidisciplinary team including university students and faculty in engineering, astronomy, physics, and geology, and engineers from industry is investigating the Moon as a site for astronomical observatories and is doing conceptual and preliminary designs for these future observatories. Studies encompass lunar facilities for radio astronomy and astronomy at optical, ultraviolet, and infrared wavelengths of the electromagnetic spectrum. Although there are significant engineering challenges in design and construction on the Moon, the rewards for astronomy can be great, such as detection and study of Earth‐like planets orbiting nearby stars, and the task for engineers promises to stimulate advances in analysis and design, materials and structures, automation and robotics, foundations, and controls. Fabricating structures in the reduced‐gravity environment of the Moon will be easier than in the zero‐gravity environment of Earth orbit, as Apollo and space‐shuttle missions have revealed. Construction of observatories on the Moon can be adapted from techniques developed on the Earth, with the advantage that the Moon's weaker gravitational pull makes it possible to build larger devices than are practical on Earth.  相似文献   

14.
针对矿热炉配料系统工艺流程复杂、可靠性及性价比要求高的特点,系统利用Modbus通信和工业以太网技术构建了由上位监控层、下位控制层和现场设备层组成的总体网络架构,设计出以S7-1200PLC为核心的稳定、高效和经济实用的分布式控制系统。通过合理的硬件、软件和监控界面设计,有效解决了生产效率与配料精度之间的矛盾,实现了称量、配料自动化。该系统自投入使用以来,性能稳定,工作可靠,具有较高的性价比,能够满足实际生产需求,达到了预期设计的目标。  相似文献   

15.
张福明 《中国冶金》2021,31(11):1-8
高炉炼铁的物理本质是铁素物质流在碳素能量流的驱动和作用下,按照设计的流程网络和运行程序,经过一系列复杂物理化学冶金反应过程,将铁矿石转变/转化为液态生铁的过程。碳素不仅是铁矿石还原过程的能量驱动源,也是生成铁水的重要非金属合金元素。面向全球“碳达峰”“碳中和”的发展形势,传统高炉必须在已有工艺技术的基础上进行改进、优化和创新,努力实现低碳化、高效化、绿色化、智能化等多重目标。提出了未来高炉在实现高效低碳的同时,必须从功能设计、装备设计和流程设计入手,遵循节能减排、低碳绿色新的发展理念,通过工艺优化、结构优化和技术开发,使传统高炉更加适应于炉料结构和燃料结构的变革,减少焦炭消耗和对其依赖,在碳素能量输入降低的条件下,形成新的耗散结构体系,进而实现高炉低碳高效炼铁的工程演进和技术发展。  相似文献   

16.
This paper identifies and analyzes the open-policy trend of the Chinese construction industry, which is characterized by trade liberalization, the underlying principle of the World Trade Organization (WTO). Compared to the construction industries in the United States, Japan, and the U.K., the construction industry in China is less developed in its legal framework, industrial structure, technological level, and international market share. To develop a competitive construction industry, the Chinese construction industry needs not only to accommodate appropriate international practice, but also to adapt and adopt it according to the market environment in China. A model to enhance the performance of the Chinese construction industry is proposed. The model consists of six modules: defining government’s role, opening up the construction market and establishing a competitive mechanism, promoting design institutes’ services and empowering professional bodies, encouraging technological innovations, upgrading employees’ educational level, and adopting multiprocurement routes. Recognizing China’s recent accession to the WTO and the attendant boost to its economy and industry development, the paper gives a timely evaluation of the post-WTO Chinese construction industry and proposes a model for its development. The model may serve the needs of academics, Chinese construction policymakers, construction enterprises, design institutes, and foreign contractors.  相似文献   

17.
张殿英  刘伟 《山东冶金》2011,(5):115-117
采用电感偶合等离子体分析技术,通过优化电感偶合等离子体光谱仪的工作参数、分析条件,选取仪器最佳分析参数和分析条件,以HNO3、HF、HClO4处理样品,稀盐酸浸取,完成硅铝钡、硅钙钡和硅钙钡铝铁合金中Al、Ba、Fe、Ca、Mn、Cu、Cr、Ni、P9种主次量元素成分的同时测定,方法的回收率达96%~104%,相对标准偏差〈1.5%,能够满足快速分析的要求。  相似文献   

18.
19.
Presents the Guidelines on Multicultural Education, Training, Research, Practice, and Organizational Change for Psychologists. These guidelines reflect the continuing evolution of the study of psychology, changes in society at large, and emerging data about the different needs of particular individuals and groups historically marginalized or disenfranchised within and by psychology based on their ethnic/racial heritage and social group identity or membership. These guidelines reflect knowledge and skills needed for the profession in the midst of dramatic historic sociopolitical changes in US society, as well as needs of new constituencies, markets, and clients. The specific goals of these guidelines are to provide psychologists with (a) the rationale and needs for addressing multiculturalism and diversity in education, training, research, practice, and organizational change; (b) basic information, relevant terminology, current empirical research from psychology and related disciplines, and other data that support the proposed guidelines and underscore their importance; (c) references to enhance ongoing education, training, research, practice, and organizational change methodologies; and (d) paradigms that broaden the purview of psychology as a profession. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

20.
Reviews the book, Attachment in psychotherapy by David J. Wallin (see record 2007-05421-000). This intellectual and clinical tour-de-force is what we have been waiting for: a book that is on the one hand a coherent, creative, thoughtful, and remarkably integrated view of contemporary psychoanalysis, with attachment, and attachment processes, at its core, and on the other a reflection on our daily, complex, work with patients. The book has three broad aims: first, to ground the reader in attachment theory and research, second, to broaden the reach of attachment theory by building bridges to other aspects of contemporary psychoanalytic theory and science, and third to apply this broader, deeply psychoanalytic, clinical attachment theory to understanding the dynamics of an individual patient and the dynamics of clinical work. This book should be essential reading for anyone interested in contemporary psychoanalysis. Few writers have the ability to write so directly and clearly about complex science and theory; his scholarship and reach are extraordinary. This book is also a book for therapists at all levels of experience. Throughout every section of the book, Wallin writes about his work with patients, about the therapeutic process, about the therapeutic situation, and about the therapeutic relationship, in all its complexity. In the end, he creates a truly contemporary vision of human development, affect regulation, and relational processes, grounded in the body and in the brain, and in the fundamental relationships that make us who we are, as therapists, as patients, and as human beings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

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