铝板带材的清洗工艺对比及选择建议

文章简要介绍了铝板带材清洗机组常用的几种清洗工艺—水清洗、油清洗和碱清洗系统的设备基本配置和清洗效果对比,供相关人员参考。     

炼铁生产中的除尘技术

文章重点介绍了高炉煤气干法除尘，出铁场除尘，原料矿槽除尘和喷煤系统收尘等多项除尘技术的应用情况及存在的问题，并阐述了我国除尘技术进展状况。     

Interactions between cleaning gobies and territorial damselfish on coral reefs

We studied the interactions between cleaning gobies, Elacatinus spp., at cleaning stations and territorial dusky damselfish, Stegastes fuscus, on a Barbadian fringing reef to enhance our understanding of the behavioural impact of cleaning stations on members of a coral reef community. Cleaning stations within damselfish territories were visited by significantly fewer species and fewer individuals than those outside damselfish territories. At cleaning stations within damselfish territories, the main client was the territory holder itself. Client behaviour did not differ between the two types of cleaning station; however, cleaning gobies at stations within damselfish territories spent less time cleaning clients, their cleaning bouts were shorter, and their feeding rate on clients was slower. These effects appear to be due to the repeated aggression of territorial damselfish towards fish intruding on to their territories to visit cleaning stations. The overlap between a territorial damselfish and a cleaning station therefore appears to have detrimental impacts on cleaning goby foraging. The presence of cleaning stations within damselfish territories exerted some effects on the territory owners. Although the rates of intrusions were similar on territories with and without cleaning stations, damselfish with cleaning stations tended to chase intruders more often, had a lower foraging rate, and were at higher risk of egg predation because of increased intrusions by egg predators. A potential benefit to territorial damselfish is regular access to a cleaning station; however, the magnitude of this benefit is unknown. This study reveals that damselfish, which are ubiquitous on coral reefs, can generate significant variation in levels of use of cleaning stations, which leads to new questions relating to the settlement behaviour of both cleaning gobies and damselfish. Copyright 1998 The Association for the Study of Animal Behaviour. Copyright 1998 The Association for the Study of Animal Behaviour.     

铝电解阳极导杆钢爪清理机的改进与设计

结合本单位阳极组装生产线上钢爪清理机的实际应用,针对已使用过的清理阳极导杆组钢爪表面的抛丸机和钢丝清刷机两种机械存在的缺陷,提出应用钢丝绳清理机这一新型设备清理钢爪表面。文章介绍了新型清理机的结构形式、工作原理及其使用效果。     

导热油炉中炉管内外表面的清洗方法

针对导热油炉中炉管内、外表面的不同积灰结焦的污染方式,研究了相应的管外吹灰、物理清焦、化学除灰清焦、化学除垢清洗的方法,讨论了化学清洗剂的类型和特点,分析总结了导热油炉管内和循环供热系统中的化学清洗方法及工艺步骤,并强调了清洗过程中的注意事项。     

铝电解阳极炭块表面自动清理系统的开发

介绍了阳极炭块表面结焦的产生原因,并分析了阳极炭块表面结焦传统清理方法存在的问题,提出了阳极炭块表面结焦清理的新方法,重点介绍了阳极炭块大面及小头结焦的在线自动清理,阳极炭块碳碗结焦自动清理和船形阳极圆弧底角结焦的清理,结果表明,采用新清理方法具有重要的时效性,实现了阳极表面结焦的自动清理,保证了阳极外观合格率达99％以上。     

Influence of Different Cleaning Conditions on Cleaning Performance of Pilot-Scale Pulse-Jet Baghouse

In this study, a pilot-scale pulse-jet baghouse is utilized to control the particulate emission of an oil-fired boiler. The operating and design parameters, such as filtration velocity, initial tank pressure, and nozzle diameter, were varied to evaluate the cleaning effect of the pulse-jet baghouse. Two different cleaning types, (1) high initial tank pressure and one bag cleaning; and (2) low initial tank pressure and two consecutive bag cleanings, are used to compare the bag-cleaning performance in this study. It is found that the cleaning effect increases with the initial tank pressure. However, the cleaning intensity (overpressure) does not increase with the nozzle diameter. There exists an optimum nozzle diameter to achieve higher cleaning intensity and a better cleaning effect. This phenomenon results from the small volume of the baghouse compartment in this study. If an industrial size baghouse was used, it suggests that a nozzle diameter larger than 13 mm and initial tank pressure greater than 2.5 kg/cm2 should be adopted to achieve a higher cleaning effect. Between the two cleaning types, type 2 is found to be more effective to clean the bag and the energy consumption for compressed air is reduced significantly from type 1. Therefore, type 2 bag cleaning is suggested to be a better method to clean the baghouse.     

太钢5号高炉煤气净化系统的改造

从节能减排的角度,对太钢5号高炉煤气净化系统的改造进行了阐述.太钢5号高炉煤气净化系统增设干法除尘改造投产后,提高了净煤气纯度,降低了净煤气粉尘含量;提高了TRT入口净煤气的温度,增加了TRT的发电量;节约了工业循环水.     

铝板带材清洗工艺探讨

简要论述了清洗工序对提高铝合金板、带、箔材表面质量的重要作用，重点介绍了水清洗和油清洗两种铝板带箔材清洗技术的工艺流程、工艺装备及特性对比，指出油清洗工艺在多方面具有一定优势，越来越受到加工业的关注。     

The probability of unique solutions of sequencing by hybridization

This paper examines issues related to oral hygiene performance. Results from interviews with 113 adults who had received oral hygiene instruction in eight general dental practices are presented with an emphasis on three issues--the respondents' tooth cleaning pattern (the location within other routines of tooth cleaning), the respondents' tooth cleaning structure (the range of items used in tooth cleaning) and the reported content of the oral hygiene instruction given. Respondents reported that the oral hygiene instruction concentrated upon issues of tooth cleaning structure and did not consider issues of tooth cleaning pattern. The two variables (structure and pattern) were cross-tabulated to create an hypothesis to explain individual variation in tooth cleaning performance. The implications of this hypothesis for understanding patient compliance and developing further quantitative investigations are described.     

酸洗系统硅泥清洗方法研究

分析带钢酸洗过程中产生的硅泥的成分,通过对硅泥在静态、运动及不同温度条件下使用清洗液后清洗效果的试验研究,了解了硅泥清洗效果的影响因素,并提出改善清洗效果的方案及提高清洗效率的清洗液的配比.     

高压水射流铸件清砂技术

铸件清砂是铸造行业中必不可少的生产工序。目前我国清砂技术落后，效率低，工作环境差。本文提出了高压水射流铸件清砂新技术，论述了清砂机理、参数计算及摆振射流机构。     

大型高炉的干法除尘系统及接口工艺控制

针对特大型高炉煤气湿法除尘工艺在节水、环保方面的缺陷,介绍了太钢4350 m3高炉在已有湿法除尘的基础上增加干法除尘系统,采用有效的降温装置、内滤式大布袋除尘技术,设计完善的干湿法切换工艺以及自动控制,使得投运后的系统运行安全可靠,节水效果显著。干法系统净化后的煤气含尘量小于等于3mg/m3,与湿法净化系统比较,不仅提高了煤气温度,而且年节水1700万t,TRT发电量增加30%,其工艺技术达到国内领先水平。     

干式电除尘控制系统在转炉上的应用

介绍了干式电除尘控制系统应用在转炉烟气上的控制难点，以成功应用在唐山贝式体钢厂的转炉烟气干式电除尘控制系统为例，介绍了转炉烟气干式电除尘的工艺流程，干式电除尘控制系统硬件、软件构成，控制系统的理念、特点及优势。     

关于SUPERCHANGER板式换热器的就地清洗实践

本文着重阐述了SUPERCHANGER扳式换热器的就地清洗方式，并提及一些实践过程中的注意事项及清洗原则等。     

大型压缩机级间气体冷却器自主清洗实践

介绍了一种压缩机级间气体冷却器自主清洗装置及方法,通过实践证明该方法能达到专业厂家清洗效果,并能有效缩短冷却器清洗周期、降低清洗费用,为今后冷却器的自主清洗提供了经验。     

钢中不稳定和微细析出相定量分析时的清洗方法

本文研究了相分析清洗过程误差的来源和减小的方法。发现传统的清洗方法不适用于不稳定和微细相的分析,必须加以改进。因为这种清洗过程中由于析出物的分解和损失造成的误差远大于清洗企图减小的误差。     

冷轧连退镀锌带钢表面清洗效果的促进研究

冷轧镀锌过程中广泛采用清洗工艺对带钢进行清洗,本文分析了影响清洗效果的各种因素,包括清洗液种类、浓度、温度以及工艺流程。同时提出了促进清洗效果的有效措施,如:工艺选择、自动加药控制、生产管理等。最后,介绍了计算机仿真技术在流体研究中的作用,建议在清洗段工艺研究中引入计算机仿真软件,此举有重要的科研价值并能为生产运行提供重要的设备运行参数。     

转炉煤气干法净化回收技术的运用

介绍了转炉煤气干法净化回收的工艺、设备等,并与OG湿法净化回收工艺进行比较,得出干法净化回收工艺在环保、节能、回收率等方面均有明显的优势。     

螯合清洗在循环水系统的应用

对于不能用无机酸调pH值,且pH值要求大于3的清洗条件,通过有机酸清洗剂先去除垢类物质,然后用螯合清洗剂螯合除锈,取得良好的处理效果,可以为同类型清洗处理提供借鉴。