Effects of atamp-charging coke making on strength and high temperature thermal properties of coke

The stamp-charging coke making process has some advantages of improving the operation environment, decreasing fugitive emission, higher gas collection efficiency as well as less environmental pollution. This article describes the different structure strength and high temperature thermal properties of 4 different types of coke manufactured using a conventional coking process and the stamp-charging coke making process. The 4 kinds of cokes were prepared from the mixture of five feed coals blended by the petrography blending method. The results showed that the structure strength indices of coke prepared using the stamp-charging coke method increase sharply. In contrast with conventional coking process, the stamp-charging process improved the coke strength after reaction but had little impact on the coke reactivity index.     

Effect of mass fraction of long flame coal on swelling pressure and microstructures of cokes

Long flame coal are abundant and widely distributed in China, but the resource utilization is quite low, the production efficiency is not high. Stamp-charging coke making technology can bend some long flame coal, which can reduce production cost and expand the coking coal resources. The long flame coal of different mass fraction is added into prime coking coal including fat coal from Longhu, 1/3 coking coal from Xinjian and coking coal from Didao in experiment. The swelling pressure is tested on-line detection using pressure sensor in coke making process, and the pores are observed by scanning electron microscopy. The results show that, the swelling pressure first increase and then decrease with the temperature increased and the maximum swelling pressure reduces gradually with mass fraction of the Long flame coal from Shenmu increased in coke making process. The SEM images of resultant coke display that the coke get more and more loose and the amount of pores is increased with mass fraction of the long flame coal from Shenmu increased. The amount pores and the pore diameter both is minimum for coking coal from Didao as prime coking coal under the same fraction of long flame coal.     

焦炉煤气用于气体悬浮焙烧炉安全性分析

从安全角度对焦炉爆气在气体悬浮焙烧炉3套煤气燃烧器、安全联锁、预防泄漏、防止爆炸、自动检测的安全性进行了分析论证。     

冲压型盘具的设计

介绍了冲压型电缆盘具的构造及设计的步骤与方法,并给出了计算实例。     

活性焦烟气脱硫技术的探讨

本文主要介绍了活性焦的微晶结构、微孔结构、活性焦性能、活性焦烟气脱硫技术工艺及特点。该技术具有流程简单、净化效果好、排烟温度高、节水、不产生二次污染、可回收硫资源等优点。活性焦烟气脱硫技术符合我国国情和经济可持续发展的要求,应加快推广应用,解决我国大气污染的同时回收宝贵的硫资源。     

活性焦制备工艺对其性能的影响研究

活性焦是以煤为主要原料生产的一种新型吸附材料,目前国内外研究已认可了其工业价值,但活性焦的高成本使得该技术的推广受到了影响。因此此次研究从活性焦制备工艺入手,结合考虑国内外关于活性焦改性方面的研究,从而提高活性焦性能,提高其性价比。     

焦化煤气净化系统存在的若干安全问题

分析焦化煤气净化系统主要设备及区域存在的安全问题,依据相关标准提出改进措施,为企业安全生产提供良好的条件。     

国外环保新技术三则

简要介绍了日本在废气治理领域的三项先进技术,包括用生化方法脱除有味物质、活性焦炭脱除有毒有害物质以及电除尘器的脉冲节能技术。     

活性半焦(炭)脱硫性能影响因素的研究

在不同炭化条件（炭化温度、炭化时间）和活化条件（活化温度、活化时间以及水蒸汽流量）下制取活性半焦。用碘吸附值和硫容表征了活性半焦的微孔结构及其脱硫能力，考察了制备条件对活性半焦微孔及其脱硫能力的影响。并探讨了脱硫能力与活性半焦微孔之间的关系。     

滚筒设计参数对粉尘爆炸率影响的研究

利用所建立的数学模型,以国产某型滚筒式采煤机为例,采用计算机模拟的方法,得到了采煤机最大切屑厚度、每线齿数、牵引速度、截线间距、滚筒转速、滚筒直径、叶片头数以及煤岩破碎性能指标与粉尘爆炸率之间的关系曲线,通过分析,确定了各参数对粉尘爆炸率的影响,为预测采煤机工作对粉尘爆炸率的影响、完善采煤机工作性能的评价体系,为改进机器设计、减小采煤机的截割粉尘、降低粉尘爆炸率、提高煤炭生产的安全性提供理论依据。