實驗設計法分析連續微波輔助轉酯化生質柴油程序

Analysis of the continuous microwave-assisted Transesterification process of the Biodiesel by Experimental Design Method

林峻霆(Chung-Ting Lin)

指導教授 ： 鍾財王

中原大學/工學院/化學工程研究所/碩士(2014年)

https://doi.org/10.6840/cycu201400651

摘要

本研究是設計一套新型微波反應系統用來做為大豆油轉酯化製備甲基
酯的實驗，甲基酯的純度96.5％以上的產品，可稱為生質柴油。利用Box–
Behnken 實驗來設計批次實驗參數: 反應時間(X1)、甲醇/油莫耳數比(X2)和
觸媒用量(X3)、連續式實驗參數: 體積流率 (X1)、甲醇/油莫耳數比(X2)和觸
媒用量(X3)。以大豆油為原料，用非均勻相相觸媒K-Pumice 做為催化劑，
並利用回應曲面法來研究批次和微波反應系統製備生質柴油之實驗，除找
出最佳條件以得到高轉化率的製程方法之外，並探討三因子之間的相互影
響關係。實驗結果顯示，反應時間、甲醇/油莫耳數比、觸媒用量和積流率
對轉酯化及轉化率都有重要的影響，批次及連續式實驗的最佳轉化率分別
為97.63%及96.75%。以回應曲面法為基礎，在微波反應系統下反應，實驗
結果在批次及連續式反應的最佳轉化率分別為 : 97.63% (X1=2.36, X2=20.25,
X3=17.58)；96.75%(X1=4.8, X2=40, X3=30)，我們的研究結果證實，成功發
展以批次或是微波反應系統，能將大豆油轉酯化生產生質柴油是有效率和
節省時間的方法。

關鍵字

大豆油 ； 轉酯化反應 ； 生質柴油 ； 微波反應系統 ； 回應曲面法 ； 異相觸媒

並列摘要

A simple continuous process was designed for the transesterification of
Soybean oil to alkyl esters using microwave-assisted method. The product with
purity above 96.5% of alkyl ester is called the biodiesel fuel. The continuous
process variables such as flow rate (irradiation time) (X1), methanol/oil molar
ratio (X2) and amount of catalyst (X3) were discussed and optimized through the
Box–Behnken experimental design. Using response surface methodology, a
series of experiments with three reaction factors at three levels were carried out
to investigate the transesterification reaction in a microwave and conversion of
alkyl ester from Soybean oil with the heterogeneous catalyst of K-Pumice. The
results showed that the ratio of flow rate (irradiation time), methanol to oil, and
amount of catalyst have significant effects on the transesterification and
conversion of alkyl ester. Based on the response surface methodology using the
selected operating conditions, the optimal conversion of batch system and
continuous system were 97.63% (X1=2.36 hr, X2=20.25, X3 =17.58) and 96.75%
(X1=4.8, X2=40, X3 =67.90) respectively. From the above mentioned results,
response surface methodology (RSM) based on Box–Behnken model was
demonstrated to predict the optimum condition for this system. Our findings
confirmed the successful development of continuous process for the
transesterification reaction of Soybean oil with microwave-assisted heating,
which is effective and time-saving for alkyl ester production.

並列關鍵字

Soybean oil ； transesterification ； biodiesel ； microwave process ； response surface method ； heterogeneous catalyst

參考文獻

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