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Dust-Free Coke Pushing

机译：无尘推焦

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We have previously pointed to the tendency in the projection of dust-free coke-pushing devices, which consists in developing stationary dust-collecting systems with large volumes of dust-laden air sucked off from under the hood and in applying highly efficient dust collectors.* This tendency does not take into account the specificity of physical processes that occur upon coke pushing from oven chambers and is associated with the use of cumbersome installations which require high power consumption. In present-day conditions this is very unfavorable during their construction and operation. In particular, on the one hand, according to the requirements of environmental protection organizations, no batteries without dust-free coke-pushing devices shall be put into operation, and on the other, the construction of stationary dust-collecting systems significantly increases capital expenditures required for the renovation of basic facilities due to the unproductive part of expenses. During the operation of such systems associated with the high power of electric motors of ventilators under conditions of rigid economy the production personnel has to shut off DCPD ventilators with restrictions in electric power supply. The circumstances indicated lead one to the conclusion that this trend in the development of the DCPD is a dead end. This conclusion follows from the results of inspections of practically all dust-free coke-pushing devices in Russian and Ukrainian byproduct coke plants, which have been carried out by workers of the Eastern Institute of Coal Chemistry (VUKhIN). In a number of cases these inspections included direct measurements (Kommunar and Altaisky byproduct coke plants, byproduct coke sections of Orsk-Khalilovo, Cherepovets and Nizhny-Tagil metallurgical plants); in some cases the efficiency assessment was made on the basis of the analysis of the available documentation and visual expert estimations. The experience accumulated by such inspections makes it possible to state that the ecological efficiency of DCPDs (the reduction of the gross emissions into the atmosphere) depends primarily on the localization of emissions (due mainly to reducing the gap between the hood and the car) and on the optimization of the suction volume; and the required degree of dust-catching depends on these primary factors. The degree of localization of emissions on the DCPDs inspected was 60-70 percent; on DCPDs of improved design with the suction volume of up to 250,000 m~3/hr it was up to 85 percent. The shortcomings of existing DCPDs include also the unsatisfactory design of the junction unit between the hood and the dust-collector, which is why use has lately been made of a dust-collector with a flexible ribbon covering and a transfer car (the Minister Stein system).
机译：以前，我们已经指出了无尘推焦装置的发展趋势，这包括开发固定式集尘系统，该系统具有从机罩下吸出大量含尘空气的功能，并采用高效的集尘器。 *这种趋势没有考虑到从烤箱腔中推入焦炭时发生的物理过程的特殊性，并且与使用笨重的设备有关，而这些设备需要高功耗。在当前条件下，这在其构造和操作中是非常不利的。特别是，一方面，根据环保组织的要求，不得运行没有无尘推焦装置的电池;另一方面，固定式集尘系统的建设大大增加了资本支出由于支出的非生产性部分，基本设施的翻新需要。在这样的与通风机的电动机的大功率相关联的系统的运行中，在刚性经济条件下，生产人员必须在电源受限的情况下关闭DCPD通风机。所表明的情况可以得出一个结论，即DCPD发展的这一趋势是死胡同。该结论是根据东方煤炭化学研究所（VUKhIN）的工人对俄罗斯和乌克兰副产品焦厂几乎所有无尘推焦装置的检查结果得出的。在许多情况下，这些检查包括直接测量（Kommunar和Altaisky副产物焦炭厂，Orsk-Khalilovo，Cherepovets和Nizhny-Tagil冶金厂的副产物焦炭段）;在某些情况下，效率评估是基于对可用文档的分析和视觉专家的估计进行的。通过这种检查积累的经验可以说明，DCPD的生态效率（减少向大气中的总排放量）主要取决于排放物的本地化（主要是由于减少了引擎盖和汽车之间的间隙）和优化吸入量;而所需的除尘程度取决于这些主要因素。在接受检查的DCPD上，排放的局部化程度为60-70％;在改进设计的DCPD上，吸风量达250,000 m〜3 / hr，达85％。现有DCPD的缺点还包括引擎盖和集尘器之间的连接单元设计不尽人意，这就是为什么最近使用集尘器，柔性带状覆盖物和转运车的原因（斯坦因部长系统）。

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