共查询到20条相似文献,搜索用时 177 毫秒
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新兴铸管股份有限公司焦化部有一座65孔TJL4345-A型焦炉,与焦炉配套的出焦除尘装置,采用了车载式出焦烟尘控制技术。该系统安装在拦焦车上,由收尘罩、重力预除尘、布袋除尘、风机及反吹系统组成。该除尘系统由于采用扁布袋,骨架强度不够,反吹效果差,造成系统高阻力运行,在出焦操作过程中, 相似文献
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通过对包钢大型高炉除尘系统成功由湿法除尘工艺改造为布袋除尘器的干法除尘工艺案例的监测,从其工作原理、工艺性能和生产运行等方面,分析论述该技术在提高除尘效率的同时,明显提高高炉煤气的出口温度,使TRT发电量大幅增加,是国内高炉首次应用全干法布袋除尘,在保证高炉正常安全运行的情况下,具有很好的节能节水环保效益和经济效益. 相似文献
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介绍梅钢高炉煤气除尘器系统的发展过程,分析了三种除尘系统的工艺流程、系统结构、性能及用能状况,从节能的角度比较了三种除尘系统,列举了干法除尘系统的诸多优点,是大型高炉值得推广采用的除尘系统。 相似文献
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锅炉烟尘排放,是大气污染的主要污染源。减少烟尘排放,目前所采取的除尘方法是静电除尘、水膜除尘、旋风除尘三种。 相似文献
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近年来南钢在高炉煤气除尘方面经过不断引进新工艺、新技术,加强技改力度,对高炉煤气采用脉冲布袋除尘技术后,节水、节电、公害少,除尘效率稳定,经过布袋过滤后的净煤气为热风炉,焦炉等热工炉窑提供了优质的煤气,经济效益非常显著。 相似文献
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对采用的煤体注水、采煤机内外喷雾、负压二次降尘综合防尘技术进行了分析,并探讨了其应用情况及经济效益。采用煤层注水后,工作面产生粉尘的质量浓度明显降低。在采煤机摇臂上增设外喷雾装置,割煤时打开,可有效提高采煤机喷雾降尘效果。采煤机负压二次降尘装置能在不同角度喷雾形成水雾,且喷雾形成的负压将摇臂和滚筒底部的粉尘吸入降尘器湿润后落下,对抑制粉尘起到关键性作用,相比粉尘质量浓度下降了40%。 相似文献
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《International Journal of Hydrogen Energy》2019,44(45):25091-25100
Wet dust removal systems pose hydrogen fire and explosion risks because accumulated aluminium dust can react with water to produce hydrogen gas. Traditionally, hydrogen sensors, alarm devices, explosion-proof electrical components and pressure relief devices are installed in wet dust removal systems to mitigate such risks. However, these safety strategies cannot fundamentally prevent the occurrence of hydrogen fires and explosions. In this work, calcium lignosulfonate (CLS), which is an abundant, inexpensive and renewable chemical, is used to inhibit hydrogen production. Through a series of hydrogen inhibition experiments using CLS solution, a hydrogen inhibition method is proposed. The hydrogen evolution curves of aluminium particles after reaction with CLS solutions at different concentrations reveal that when the concentration of the CLS solution reaches 0.5 g/L, essentially no hydrogen gas is produced. Scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) are used to characterize the aluminium particles before and after reaction. The film formation behaviour of CLS on the surface of aluminium particles is characterized. The results show that CLS is a good inhibitor and that the adsorption of CLS on the aluminium particle surface obeys the Langmuir adsorption isotherm. Additionally, Fourier transform infrared (FT-IR) analysis is conducted to reveal the physicochemical mechanism of hydrogen inhibition. The application of CLS solution in wet aluminium dust removal systems results in the maximum reduction in hydrogen explosion risk. 相似文献
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Kaili Xu Yantong Wang Ruiqing Shen Qingsheng Wang 《International Journal of Hydrogen Energy》2018,43(31):14859-14865
For treatment of aluminum dust, a wet dust removal system has been used worldwide. During treatment, aluminum dust is inhaled into a water tank of the dust collector. As hydrogen production reactions are likely to take place in the water tank, there exists a great risk of fire or explosion accidents associated with the wet dust removal system. Based on field research and laboratory experiments, Hydrogen Inhibition Method (HIM) by using CeCl3 solutions was proved capable of inhibiting reactions between aluminum dust and water. When the concentration of CeCl3 solutions reached 6.02 g/L, there was basically no hydrogen gas produced. SEM, EDS and XPS characterizations were used to assess the aluminum particles before and after being reacted with water or CeCl3 solutions, respectively. Shrinking core model was utilized to identify the corresponding chemical reaction kinetics. Additionally, a physicochemical mechanism was established to explain these phenomena. 相似文献
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煤层在采落和破碎过程中会产生大量的煤尘.就煤矿掘进工作面综合防尘技术展开研究,简要阐述了粉尘性质及其危害,并对粉尘产生原因进行分析,最后就掘进工作面的实际工作情况提出了综合防尘技术. 相似文献
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