本文選題：除塵裝置 + 塵源控制��； 參考：《東華大學(xué)》2013年碩士論文

【摘要】：本課題以某企業(yè)大型礦用車(chē)卸礦料槽處卸礦過(guò)程的揚(yáng)塵問(wèn)題作為研究對(duì)象,主要研究了礦車(chē)在料槽處卸礦過(guò)程所形成的揚(yáng)塵及其特點(diǎn),以及針對(duì)此揚(yáng)塵所采用的塵源控制方案及除塵裝置。 在礦車(chē)卸礦過(guò)程中,礦石自礦車(chē)卸入料槽的下落過(guò)程及礦石在料槽內(nèi)的堆積過(guò)程均會(huì)形成誘導(dǎo)氣流,使夾雜在礦石之中的細(xì)小粉塵隨著誘導(dǎo)氣流而溢出料槽,形成揚(yáng)塵；另外,在現(xiàn)場(chǎng)沒(méi)有防護(hù)的情形下,揚(yáng)塵在自然風(fēng)、熱氣流等二次塵化作用的影響下會(huì)造成更大范圍的擴(kuò)散,不但會(huì)影響到現(xiàn)場(chǎng)的工藝操作,而且也會(huì)污染周?chē)沫h(huán)境。 針對(duì)礦車(chē)料槽處卸礦過(guò)程形成的揚(yáng)塵：分別采用理論計(jì)算和數(shù)值模擬的方法對(duì)揚(yáng)塵風(fēng)量進(jìn)行了確定；另外,采用數(shù)值模擬的方法對(duì)卸礦過(guò)程形成的揚(yáng)塵氣流進(jìn)行了分析,為后續(xù)塵源控制方案的提出奠定了基礎(chǔ)。 針對(duì)礦車(chē)卸礦過(guò)程形成的揚(yáng)塵氣流隨礦車(chē)卸料點(diǎn)的不同而變化的特點(diǎn),提出了適應(yīng)于揚(yáng)塵氣流變化的塵源控制方案；根據(jù)料槽處的生產(chǎn)工藝和具體環(huán)境分別擬定了側(cè)吸式塵源控制方案和吹吸塵源控制方案。 針對(duì)側(cè)吸式塵源控制方案和吹吸式塵源控制方案,采用了數(shù)值模擬的方法對(duì)影響塵源捕集效率的主要因素進(jìn)行了正交試驗(yàn)研究,得到了兩種塵源控制方案的捕集效率與其主要影響因素之間的函數(shù)關(guān)系式。通過(guò)對(duì)比分析發(fā)現(xiàn)：在實(shí)現(xiàn)對(duì)塵源完全控制的情形下,側(cè)吸式塵源控制方案所需的通風(fēng)量小,且其系統(tǒng)結(jié)構(gòu)簡(jiǎn)單；具有初投資小、運(yùn)行管理方便等的特點(diǎn),故本課題選用側(cè)吸式塵源控制方案為較佳的塵源控制方案。 依據(jù)流量比法和π定理,對(duì)影響側(cè)吸式塵源控制方案塵源捕集效率的各主要因素進(jìn)行無(wú)量綱分析,結(jié)合正交模擬試驗(yàn)結(jié)果得到了極限流量比KL的多元回歸關(guān)聯(lián)式；基于多元回歸關(guān)聯(lián)式對(duì)側(cè)吸式塵源控制方案進(jìn)行了優(yōu)化。 結(jié)合優(yōu)化后的側(cè)吸式揚(yáng)塵控制方案,設(shè)計(jì)出新型移動(dòng)式除塵裝置用于礦車(chē)料槽處卸礦過(guò)程的塵源控制；為今后工程設(shè)計(jì)提供了參考。
[Abstract]:In this paper, the dust in the unloading process of a large truck in an enterprise is taken as the research object, and the dust and its characteristics in the unloading process are mainly studied. As well as the dust source control scheme and dust removal device. In the process of ore unloading, both the falling process of ore from the unloading tank and the accumulation process of ore in the ore tank will form induced airflow, which will cause the fine dust mixed in the ore to overflow with the induced air flow, forming dust; in addition, Under the influence of natural wind, hot air flow and other secondary dusts, it will cause a wider diffusion, which will not only affect the field operation, but also pollute the surrounding environment. Aiming at the hoisting dust formed by unloading process at the ore tank, the dust volume is determined by the method of theoretical calculation and numerical simulation, in addition, the dust flow formed in the unloading process is analyzed by the numerical simulation method. It lays a foundation for the following scheme of dust source control. In view of the characteristics that the dust flow formed in the unloading process changes with the different unloading points of the truck, the dust source control scheme adapted to the variation of the dust flow is put forward. According to the production process and specific environment of the feed tank, the control scheme of side suction dust source and the control scheme of blowing dust source are worked out respectively. Aiming at the control scheme of side-suction dust source and the control scheme of blowing dust source, the main factors affecting the collecting efficiency of dust source were studied by orthogonal test using numerical simulation method. The functional relationship between the capture efficiency of two kinds of dust source control schemes and its main influencing factors is obtained. Through comparison and analysis, it is found that under the condition of complete control of dust source, the ventilation of side suction dust source control scheme is small, and its system structure is simple, with the characteristics of small initial investment, convenient operation and management, etc. Therefore, the control scheme of side-suction dust source is better. Based on the flow ratio method and 蟺 theorem, the dimensionless analysis of the main factors affecting the efficiency of dust collection in the control scheme of side suction dust source is carried out, and the multivariate regression correlation of the limit flow ratio KL is obtained by combining with the results of orthogonal simulation test. The control scheme of side-suction dust source is optimized based on multi-regression correlation. Combined with the optimized side suction dust control scheme, a new type of mobile dust removal device is designed for the dust source control of the unloading process at the mine car tank, which provides a reference for the future engineering design.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TD714.4

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