6m焦炉提高装煤量的生产实践

为提高6 m焦炉单孔装煤量,采取了缩短周转时间、调整配合煤细度、改变装煤操作方式以及改造推焦车平煤杆措施,使单孔装煤量由28.4 t提高到29.3 t以上。     

JN60-6型焦炉单孔装煤量与化产品收率的提高

为提高JN60-6型焦炉单孔装煤量,采取了调整配合煤细度、稳定配合煤水分、规范装煤与平煤操作等措施,提高了单孔装煤量,降低了炉顶空间温度,进而提高了焦油和粗苯产率,具有较好的经济效益。     

7.63m焦炉无烟装煤模式优化

分析了7. 63m焦炉装煤车装煤作业存在的主要问题,提出了从装煤量计算方式、平煤控制方式、二次补煤设定、装煤时间控制、平煤杆结构优化方面对7. 63m焦炉装煤模式进行优化,提高了装煤运行的稳定性,增加了装煤量,降低了余煤量,稳定了煤线,减少了烟尘外逸。     

顶装焦炉装煤孔底座的改进

针对原顶装焦炉装煤孔底座存在的使用寿命短、更换劳动强度大的问题,提出了装煤孔底座的改进措施:通过改进装煤孔底座的外形和材质,来延长备件的使用寿命,提高备件的性价比,节省备件费用;同时装煤孔底座外形的改变可方便更换,降低了劳动强度。     

焦炉装煤孔底座的改进

针对现在顶装焦炉装煤孔底座存在的使用寿命短、职工更换劳动强度大的问题,本文提出了装煤孔底座的改进措施.可通过改进装煤孔底座的外形和材质,来延长备件的使用寿命,提高备件的性价比,节省备件费用；同时通过改变装煤孔底座的外形方便了职工更换,降低了劳动强度.     

提高顶装焦炉装煤除尘系统安全性的技术改进

通过分析近年来关于顶装焦炉装煤除尘系统发生的安全事故,分析装煤除尘操作过程中装煤口—除尘管道—装煤除尘器三环节存在的安全风险,总结出提高六米顶装焦炉装煤除尘系统安全性的关键点。通过增加信号联锁,设备改造等手段,改进了六米顶装焦炉装煤除尘系统安全性。     

焦炉装煤孔底座的改进

针对现在顶装焦炉装煤孔底座存在的使用寿命短、职工更换劳动强度大的问题,本文提出了装煤孔底座的改进措施。可通过改进装煤孔底座的外形和材质,来延长备件的使用寿命,提高备件的性价比,节省备件费用：同时通过改变装煤孔底座的外形方便了职工更换,降低了劳动强度。     

焚烧法治理装煤烟尘工艺在攀钢捣固焦炉的应用

对国内几种典型的治理焦炉装煤烟尘的工艺进行了介绍,并分析了几种工艺的优缺点。根据攀钢炼铁厂3#、4#焦炉装煤除尘运行情况及现有问题,选用"焚烧+水洗"方式对焦炉装煤除尘工艺进行改造,取得了明显效果,装煤除尘吸力显著提高,除尘效果明显改善,达到排放标准。     

7.63m焦炉提高单孔装煤量的研究及应用

介绍了7.63m焦炉单孔装煤量的主要影响因素、改进措施及实践应用,通过增体、提密方面提高单孔装煤量1.25t,相当于年增加装煤量10.54万t,并可减少污染物排放。     

5.5m捣固焦炉装煤烟尘治理探索

分析了5.5m捣固焦炉装煤系统除尘效果差的原因,采取了相应的改造措施,提出了系统运行中的注意事项。改进后提高了装煤除尘效果,杜绝了装煤时机侧冒黄烟的现象,减少了上升管和消烟除尘设备的维护工作。     

捣固炼焦配入气肥煤的实践

10%～15%的澳大利亚气肥煤配合云南昭通地区10%的无烟煤,并以云南和贵州地区的焦煤作基础煤进行捣固炼焦,在提高煤气发生量的同时对焦炭的机械强度没有产生较大的影响,提高了化产品的回收率和甲醇的产量,取得了较好效果。     

Coal blending theory for dry coal charging process

Nippon Steel has successfully developed dry coal charging processes such as CMC and DAPS for cokemaking. In this report, the fundamental aspects of the coal blending theory for dry coal charging processes are investigated. The investigation has made it clear that even in cases of high coal bulk density due to dry coal charging processes, it is possible to control coking pressure by adjusting the blending ratio of a slightly caking and low rank coal; and it is also possible to produce high quality coke by adjusting the total dilatation of the blended coal at a suitable level.     

捣固装煤工艺优化设计与方案设置

以经济实用为原则,提出内置式煤塔的捣固工艺布局,在顶装焦炉的基础上,利用原有煤塔结构,增设1座捣固站,将煤料送至焦炉机侧的装煤车顶部。该设计方案可对装煤车的煤箱实现连续均匀布煤,具有基建投资少、建设难度小、维护方便等特点。     

The mechanism of coking pressure generation I: Effect of high volatile matter coking coal, semi-anthracite and coke breeze on coking pressure and plastic coal layer permeability

One of the most important aspects of the cokemaking process is to control and restrain the coking pressure since excessive coking pressure tends to lead to operational problems and oven wall damage. Therefore, in order to understand the mechanism of coking pressure generation, the permeability of the plastic coal layer and the coking pressure for the same single coal and the same blended coal were measured and the relationship between them was investigated. Then the ‘inert’ (pressure modifier) effect of organic additives such as high volatile matter coking coal, semi-anthracite and coke breeze was studied. The coking pressure peak for box charging with more uniform bulk density distribution was higher than that for top charging. It was found that the coking pressure peaks measured at different institutions (NSC and BHPBilliton) by box charging are nearly the same. The addition of high volatile matter coking coal, semi-anthracite and coke breeze to a low volatile matter, high coking pressure coal greatly increased the plastic layer permeability in laboratory experiments and correspondingly decreased the coking pressure. It was found that, high volatile matter coking coal decreases the coking pressure more than semi-anthracite at the same plastic coal layer permeability, which indicates that the coking pressure depends not only on plastic coal layer permeability but also on other factors. Coking pressure is also affected by the contraction behavior of the coke layer near the oven walls and a large contraction decreases the coal bulk density in the oven center and hence the internal gas pressure in the plastic layer. The effect of contraction on coking pressure needs to be investigated further.     

气肥煤替代部分肥煤进行捣固炼焦试验研究

通过气肥煤、肥煤与其他单种煤的共结焦试验，考察了二者的改质作用，试验结果证明肥煤改质作用优于气肥煤。在此基础上进行了气肥煤替代部分肥煤的捣固炼焦试验，结果表明在保持配合煤黏结性稳定的前提下，焦炭的反应后强度随着气肥煤替代量的增加先增大后减小，焦炭反应性的变化趋势与之相反，而焦炭的冷态强度随着气肥煤替代量的增加变化不大。     

5座焦炉实现装煤量的自动累计

采用无基坑轨道衡、双显示称重仪、计算机及红外对位等设备，在马钢5座焦炉上实现了装煤量自动累计，使装煤缺角、装煤堵眼和不正点出焦次数明显下降。     

装煤车新型密封导套的结构与特点

介绍了国内外顶装煤装煤车的几种新型密封导套,并详述了导套的结构与特点。     

A comparative study of by-products yield from coke making processes in a Jenkner apparatus

Physico-chemical characteristics or the industrial behaviour of any coal is directly controlled by its organic micro-components (macerals). The yields of by-products during carbonization of coal are affected by organo micro-components of different coals and operating parameters, such as, charging technologies, carbonization temperature, particle size, bulk density, etc. In the present investigation, the effects of volatile matters (16.61–36.00%), Ro, avg. (0.80–1.36%), exinite (0.5–4.5%), hydrogen (4.34–5.29%) and nitrogen (1.60–2.18%) content of coal on yield of by-products, such as, coke oven gas, coal tar, ammonia, and hydrogen sulphide were studied. The studies revealed that there is a significant difference of the yield of by-products for the two different charging technologies. The coke oven gas, coal tar and ammonia yield was lower in stamp charging process as compared to top charging process, whereas, hydrogen sulphide yield followed a reverse trend.