本文選題：甲烷化　切入點(diǎn)：甲烷化反應(yīng)器　出處：《新疆大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：本文選取Topsoe工藝中的固定床甲烷化反應(yīng)器為研究對(duì)象,由于Topsoe Process中甲烷化反應(yīng)器分三段,甲烷化主要發(fā)生在第一段甲烷化反應(yīng)器中,因此,本論文主要針對(duì)第一段甲烷化反應(yīng)器進(jìn)行模擬研究。研究內(nèi)容圍繞甲烷化反應(yīng)器內(nèi)部場分布和固定床甲烷化反應(yīng)器進(jìn)行。在論文中提及的第一段甲烷化反應(yīng)器均由甲烷化反應(yīng)器代替。首先,建立甲烷化反應(yīng)器流體模型,運(yùn)用ANSYS-CFX進(jìn)行流體模擬,確定模擬模型。為了驗(yàn)證模型的正確性,將模擬結(jié)果與設(shè)計(jì)值進(jìn)行比對(duì),比對(duì)結(jié)果5%時(shí)認(rèn)為模擬模型是合適的。確定物理模型和模擬模型后,提取溫度分布、流速分布及各組分分布矢量圖,一方面,可以明確床層中的各量分布情況;另一方面,對(duì)結(jié)果進(jìn)行分析,明確床層存在的問題,以便針對(duì)存在的問題提出措施。第二,針對(duì)反應(yīng)器存在的問題進(jìn)行相應(yīng)的床層結(jié)構(gòu)改變,得到床層結(jié)構(gòu)與甲烷產(chǎn)量的關(guān)系,進(jìn)一步確定既有利于溫度均勻分布又能保證甲烷產(chǎn)量的床層結(jié)構(gòu)。第三,對(duì)反應(yīng)器入口工藝參數(shù)進(jìn)行研究,提出當(dāng)其他參數(shù)條件滿足設(shè)計(jì)參數(shù)時(shí),入口溫度、空速和入口壓力的允許操作范圍。最后,提取甲烷化反應(yīng)器內(nèi)壁面的溫度分布、壓力分布,通過曲線擬合的方法得到其擬合曲線,將其加載到甲烷化反應(yīng)器設(shè)備上,進(jìn)行熱分析;結(jié)合反應(yīng)器的機(jī)械載荷,將熱分析結(jié)果傳遞到反應(yīng)器上,對(duì)甲烷化反應(yīng)器進(jìn)行熱-力耦合分析,保證反應(yīng)器安全穩(wěn)定運(yùn)行。
[Abstract]:In this paper, the fixed bed methanation reactor in Topsoe process is selected as the research object. Because the methanation reactor in Topsoe Process is divided into three stages, methanation mainly occurs in the first stage methanation reactor. In this thesis, the first stage methanation reactor is simulated. The research focuses on the field distribution of the first stage methanation reactor and the fixed bed methanation reactor. The first stage methanation reactor mentioned in the paper is the same as the first stage methanation reactor. Instead of methanation reactors. First, The fluid model of methanation reactor was established, and the simulation model was determined by using ANSYS-CFX. In order to verify the correctness of the model, the simulation results were compared with the designed values. After determining the physical model and the simulation model, we can extract the vector diagram of temperature distribution, velocity distribution and component distribution. On the one hand, we can determine the distribution of each quantity in the bed; on the other hand, The results are analyzed to make clear the problems in the bed, in order to put forward the measures to solve the problems. Secondly, to change the bed structure to get the relationship between the bed structure and methane production. Further determine the bed structure which is favorable to uniform temperature distribution and ensure methane production. Thirdly, the process parameters of reactor inlet are studied, and when other parameters meet the design parameters, the inlet temperature is put forward. Finally, the temperature distribution and pressure distribution of the inner wall of the methanation reactor were extracted, and the fitting curves were obtained by the curve fitting method, and then loaded into the methanation reactor equipment. Combined with the mechanical load of the reactor, the results of thermal analysis are transmitted to the reactor, and the thermo-mechanical coupling analysis of the methanation reactor is carried out to ensure the safe and stable operation of the reactor.
【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE665.3

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