利用變壓吸附程序分離甲醇裂解產氣中氫氣及一氧化碳之模擬

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Title:	利用變壓吸附程序分離甲醇裂解產氣中氫氣及一氧化碳之模擬
Authors:	詹家豪;Chan,Chia-hao
Contributors:	化學工程與材料工程學系
Keywords:	PU1 吸附劑;一氧化碳純化;氫氣純化;變壓吸附
Date:	2015-12-07
Issue Date:	2016-01-05 17:38:30 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究以變壓吸附程序處理甲醇裂解後所產生之模擬氣體(一氧化碳33%、氫氣66%及甲烷1%)，目的在於將一氧化碳以及氫氣回收並濃縮，使之儲存並利用，氫氣可作為能源之利用，一氧化碳可作為合成化學之原料。變壓吸附法為一分離氣體混合物之連續性循環程序，利用氣體混合物中各成分對吸附劑之吸附能力的不同而產生的吸附選擇性來篩選氣體，並利用高壓吸附、低壓脫附以得到高濃度的產物。本研究探討的吸附劑為北大先鋒公司所產之PU1吸附劑。研究一開始先以文獻實驗數據中各氣體成份對吸附劑的平衡吸附量進行迴歸，以取得平衡吸附曲線的參數。再將已建立好的模擬程式分別與文獻中一氧化碳純化工廠數據以及氫氣純化實驗數據進行驗證，以驗證程式及吸附劑的可靠度。最後分別以四塔二十四步驟變壓吸附程序處理甲醇裂解氣為進料進行模擬，並藉由探討不同的操作變因如吸附塔塔長、進料流率、進料壓力、逆向減壓壓力、儲氣槽大小、以及各步驟時間，尋求最適化的操作條件。 ;This research studies the separation and concentration of carbon monoxide and hydrogen from the methanol decomposition product gas by pressure swing adsorption (PSA) process, so that the high concentration carbon monoxide and hydrogen can be producted .Hydrogen can be used as energy source and carbon monoxide can be used for raw chemical subtances. Pressure swing adsorption is a cyclic process to separate gas mixtures based on the difference of adsorption capacity of each component on adsorbent. This technology consists of gas adsorption at high pressure and desorption at low pressure to produce high-purity product. Zeolite PU1 adsorbent is used in this study. First, the experimental adsorption isotherm data from literatures were regressed to obtain the parameters of extend Langmuir isotherm equation. Then we verified the simulation program and adsorption parameters by comparison with the plant data of concentrating carbon monoxide and the experimental data of concentrating hydrogen from literatures. The agreement is quite good. Finally, a four-bed twenty-four-step PSA process with methanol decomposition product gas (33% CO , 66 %H2, 1%CH4) as feed was studied to find the optimal operating conditions. The optimal operating conditions can be obtained by assessing different operating variables such as bed length, feed flow rate, feed pressure, vacuum pressure, storage tank volume, and the time of each step.
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] Electronic Thesis & Dissertation

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