煤矿锚杆机除尘马达改进

针对煤矿进口锚杆机除尘马达频繁出现故障的情况,通过排查除尘装置的安装方式和监测马达工作时的压力状态,查找故障原因,并制定解决方案。通过马达外接单向阀,可满足马达进油口最低安全压力限制的要求,解决了马达频繁损坏的问题,保障了设备工作的稳定性,提高了工作效率。     

Effects of different metal corrosion inhibitors on hydrogen suppression and film formation with Mg–Zn alloy dust in NaCl solutions

To improve the safety of wet dust removal systems for processing magnesium-based alloys, a new method is proposed for preventing hydrogen generation. In this paper, hydrogen generation by Mg–Zn alloy dust was inhibited with six common metal corrosion inhibitors. The results showed that sodium dodecylbenzene sulfonate was the best hydrogen inhibitor, while CeCl₃ enhanced hydrogen precipitation. The film-forming stability of sodium dodecylbenzene sulfonate was tested with different contents, temperatures, Cl^? concentrations and perturbation rates. The results showed that this inhibitor formed stable protective films on the surfaces of Mg–Zn alloy particles, and adsorption followed the Langmuir adsorption model.     

湖州南方中转仓储及输送工程建设特点

介绍了湖州南方物流有限公司中转仓储及输送工程项目的建设背景、建设条件,以及线路规划、主要技术方案,该项目是国内采用长距离越野曲线带式输送机系统运输熟料距离最长的绿色环保工程。项目以电力驱动运输替代汽车运输,日输送量达4.5~5万吨。采用密闭廊道输送,粉尘排放量低,噪声<50dB,日均减少汽车运输3000辆次,年节约燃油2000余吨,减少了尾气排放,缓解了沿线的交通拥堵,实现了良好的经济效益和社会效益。     

高炉瓦斯灰泥铅锌铁综合利用磁化焙烧条件研究

为了确定新钢高炉瓦斯灰泥中铅锌铁回收的焙烧工艺条件，进行了磁化焙烧温度、焙烧时间、无烟煤用量和料层厚度条件试验，并在条件试验确定的参数基础上进行了组合微调优化。结果表明，在焙烧温度为1 120 ℃、焙烧时间为3.5 h、无烟煤用量为25%、料层厚度为35 mm情况下，铅、锌回收率分别超过86%和93%，磁选铁精矿铁品位超过63%、铅锌总含量不超过0.4%、铁回收率超过81%，达到了国家“863”任务书规定的各项技术指标要求。     

关于电石炉散点除尘灰在热电脱硫装置的应用研究

通过对散点除尘灰的成分进行分析,并结合生产实际,提出将散点除尘灰在干法及湿法脱硫系统使用,既有效利用了生产固废,又节省了生产成本。     

Extensive evaluation and classification of low-cost dust sensors in laboratory using a newly developed test method

An extensive evaluation of low-cost dust sensors was performed using an exponentially decaying particle concentration. A total of 264 sensors including 27 sensors with light-emitting diodes (LEDs) and 237 sensors with laser lighting sources were tested. Those tested sensors were classified into 4 groups based on the deviation from the reference data obtained by a reference instrument. The response linearities of all the tested samples for PM₁, PM_2.5, and PM₁₀ were in excellent agreement with the reference instrument, except a few samples. For the measurements of PM₁ and PM_2.5, the lighting source, that is, LED or laser, did not show any significant difference in overall sensor performance. However, LED-based sensors did not perform well for PM₁₀ measurements. The 32, 24, and 16% of all the tested sensors for PM₁, PM_2.5, and PM₁₀ measurement, respectively, are in the category of Class 1 (reference instrument reading ± 20%) requirement. The performance of the low-cost dust sensors for PM₁₀ measurement was relatively less satisfactory.     

半干法烟气脱硫脱硝除尘一体化技术在焦化厂中的应用

介绍了焦化厂半干法烟气脱硫脱硝除尘一体化技术在焦化厂中的应用,描述了半干法烟气脱硫、低温选择性催化还原法(SCR)脱硝+除尘一体化工艺流程,该工艺运行效果、运行参数、工艺技术的特点,运行中常见问题及解决方法和未来需要进一步思考和解决的问题等。实践证明,该工艺技术在焦化厂能够长期稳定运行,脱硫脱硝及除尘效果较好,烟气指标可达到环保要求。     

主溜井排尘与生产分区并联回风技术研究

四川某矿山东部上部作业区域处于东、西部分区通风系统之外，针对原主通风系统无法负担此区域的实际情况，为节省新系统投资及建设周期，研究利用其1#主溜井排尘通风系统与此区域形成并联回风通路的方式解决该区域通风问题，即东部上部区域端部回风井污风与排尘风井污风并联回风汇至上部汇风中段，汇集污风统一经由上部排尘风机排至地表，该系统方案既保障了矿井东部上部作业中段（分段）生产用风与溜井排尘用风的需求，同时节约矿井东部上部系统独立建设及运行成本。     

河津腾晖煤业智能化降尘技术实践

以河津腾晖煤业为研究对象,基于智能化工作面开采及安全生产的需要,设计了智能化降尘系统,对该系统智能化控制关键技术进行了分析,提出了降尘点优化布置方案。该智能化降尘系统能较好地适应智能化开采技术的要求,实现了与综采智能控制系统的联动控制,降尘效果理想,为智能化开采提供了安全保障。     

综采工作面粉尘防治问题分析与技术改进

针对新桥煤矿2301综采工作面机载喷雾系统喷雾效果差、喷雾耗水量大造成煤质含水量超标、喷嘴雾化程度不高、喷嘴容易发生堵塞等问题,提出了高压喷雾系统设计方案,选择了1.2mm的锥形引射喷嘴和1.5mm的扇形引射喷嘴。采用固定水泵供水方式,结合工作面实际情况,计算出喷雾总用水量247.5L/min,提高了喷雾射程,提升了除尘效果。