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首页> 外文期刊>Transactions of The Institution of Chemical Engineers. Process Safety and Environmental Protection, Part B >Study and application on foam-water mist integrated dust control technology in fully mechanized excavation face
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Study and application on foam-water mist integrated dust control technology in fully mechanized excavation face

机译：全机械化挖掘面泡沫水雾集成粉尘控制技术的研究与应用

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The dust produced by the roadheader during the tunneling process will change with time. Water mist can achieve high dust removal efficiency when the dust production is relatively small, and foam technology can realize high efficiency in the treatment of large dust production. It is necessary to choose water mist and foam dust removal technology freely according to the dust yield. Therefore, this paper puts forward the research of foam and water mist integrated dust removal technology. According to the characteristics of dust production in excavating operation, a new type of flat fan foam nozzle is put forward. Through the internal channel of gradual change, the foam jet is transformed from a cylindrical fluid to a flat one and diffuses at a certain angle. And the outlet area of the nozzle is determined to be 120 mm(2), with the nozzle's uniform angle of 6 degrees and the compression angle of 25 degrees as the final angle of the nozzle through simulation and field experiments. Combined with the characteristics of water mist, the function of water atomization is added to foam technology. On the basis of foam nozzle, 10 symmetrical water inlet channels with a diameter of 1.5 mm are uniformly arranged on the side wall, and the original foam inlet is changed into air inlet. Through multi-stage atomization of air and water, water mist with fine atomization size and uniform distribution can be produced. Relevant atomization operation conditions are tested through experiments. The test results show that the new technology could greatly reduce the cost, achieve the goal of efficient dust removal, and guarantee the working environment and the health of the workers. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：在隧道过程中驾驶员产生的灰尘随时间变化。当粉尘生产相对较小时，水雾可以实现高除尘效率，并且泡沫技术可以实现高粉尘生产的高效率。必须根据粉尘产量自由选择水雾和泡沫除尘技术。因此，本文提出了泡沫和水雾集成除尘技术的研究。根据挖掘操作粉尘生产的特点，提出了一种新型的扁平风扇泡沫喷嘴。通过逐渐变化的内部通道，泡沫射流从圆柱形流体转变为平坦的一个并以一定角度扩散。并且，喷嘴的出口区域被确定为120mm（2），喷嘴的均匀角度为6度，并且通过模拟和现场实验的喷嘴的最终角度为25度的压缩角度。结合水雾的特点，将水雾化的功能加入到泡沫技术中。在泡沫喷嘴的基础上，均匀地布置在侧壁上的10个具有1.5mm的对称进水口通道，并且原始泡沫入口被改变成空气入口。通过空气和水的多级雾化，可以生产具有细雾化尺寸和均匀分布的水雾。通过实验测试相关的雾化操作条件。测试结果表明，新技术可以大大降低成本，实现高效除尘的目标，并保证工作环境和工人的健康。 （c）2019化学工程师机构。 elsevier b.v出版。保留所有权利。

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