本文選題：分層并聯(lián)　切入點：徑向流吸附器　出處：《浙江大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著世界經(jīng)濟的高速發(fā)展,鋼鐵、冶金、化工等諸多工業(yè)領(lǐng)域?qū)ρ�、氮等工業(yè)氣體的需求急劇增長。未來需要更大規(guī)模、更高效的低溫空分系統(tǒng)來適應(yīng)這個趨勢。在低溫空分過程中,吸附純化環(huán)節(jié)對整個系統(tǒng)的安全運行意義重大。如何進一步提高吸附器的空氣處理量和吸附顆粒利用效率,是目前制約空分系統(tǒng)大型化和低能耗化發(fā)展的一大障礙。然而,立式徑向流吸附器具有占地面積小、床層壓降小、再生能耗低等優(yōu)點,在國內(nèi)外大型和超大型空分系統(tǒng)中得到了廣泛應(yīng)用。改進立式徑向流吸附器的結(jié)構(gòu),優(yōu)化其流場分布,則是實現(xiàn)吸附系統(tǒng)大型化和高效化的有效途徑。為此,本文開展了以下研究工作：(1)為降低徑向流吸附器高度對均布的影響,提出了徑向流吸附器的分層并聯(lián)設(shè)計方法,設(shè)計并加工了分層并聯(lián)吸附器,對其內(nèi)部流體壓力場的分布進行了測量。(2)建立了徑向流分層并聯(lián)吸附器的數(shù)值計算模型。應(yīng)用了計算流體力學(xué)方法,對分層并聯(lián)式徑向流吸附器中流體在床層內(nèi)的流場進行了數(shù)值模擬計算,并在相同條件下與普通結(jié)構(gòu)后的徑向流吸附器的流場分布進行對比。結(jié)果表明,分層并聯(lián)結(jié)構(gòu)呢的均勻度相比于普通結(jié)構(gòu)的均勻度提高了80%,有效清除了徑向流吸附器過高對床層內(nèi)流體均布的負面影響。(3)對分層并聯(lián)徑向流吸附器的多個結(jié)構(gòu)參數(shù)進行了優(yōu)化,使其均勻度更好,吸附顆粒利用率更高；并對分層并聯(lián)方法與其他均布方法的耦合進行了探討。
[Abstract]:With the rapid development of the world economy, iron and steel, metallurgy, chemical and other industrial fields of oxygen, nitrogen and other industrial gas demand rapid growth. The future needs of larger, more efficient cryogenic air separation system to adapt to this trend. In the low temperature air separation process, adsorption and purification aspects of major significance to the safe operation of the whole system. How to further improve the adsorber air handling capacity and adsorption efficiency of particles, is currently a major obstacle for the development of the consumption of air separation system in large scale and low energy. However, the vertical radial flow adsorber has the advantages of small occupied area, the bed pressure drop is small, low regeneration energy consumption, has been widely used in domestic and foreign large and super large the air separation system. Improving the structure of vertical radial flow adsorber, optimize the flow field distribution, is the effective way to realize the large-scale and efficient adsorption system. Therefore, this paper carried out the following research Research work: (1) to reduce the radial flow adsorber to uniform, put forward a hierarchical parallel design method of radial flow adsorber, design and processing of parallel layered absorber, the distribution of internal fluid pressure field were measured. (2) we present a numerical simulation model of radial flow adsorber stratified parallel. The application of the method of computational fluid dynamics, flow field of the layered parallel radial flow adsorber in the fluid in the bed of the numerical simulation of flow field, and under the same conditions with the common structure after radial flow adsorber were compared. The results show that the uniformity of the layered parallel structure compared to the general structure of the uniform raise the degree of 80%, effectively remove the high uniform radial flow adsorber on fluid bed negative impact. (3) a number of structural parameters of the layered parallel radial flow adsorber was optimized, which are The evenness is better and the utilization ratio of the adsorbed particles is higher, and the coupling between the layered parallel method and the other uniform method is also discussed.

【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TQ116.11

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