A study of Liquid-Liquid Equilibria for Separation of Formaldehyde
A study of Liquid-Liquid Equilibria for Separation of Formaldehyde
- 주제(키워드) separation of formaldehyde
- 발행기관 고려대학교 대학원
- 지도교수 송광호
- 발행년도 2018
- 학위수여년월 2018. 8
- 유형 Text
- 학위구분 석사
- 학과 대학원 화공생명공학과
- 원문페이지 52 p
- 실제URI http://www.dcollection.net/handler/korea/000000081570
- UCI I804:11009-000000081570
- DOI 10.23186/korea.000000081570.11009.0000860
- 본문언어 영어
- 제출원본 000045953568
초록/요약
Formaldehyde (FA) is an industrially important material and is the key reactant for the synthesis of resins and polymers. In particular, FA is used as a raw material for the synthesis of trimethylolpropane (TMP). TMP is mainly used as a material for coatings, and is synthesized through two steps reaction using FA and butyraldehyde as reactants. The FA remaining after the first step reaction acts as a poison to the catalyst of the second step reaction. We want to separate FA through extraction, and at the same time we want to separate TMP. Therefore, the need for the liquid-liquid equilibrium data, which is the basis for extractor production, has been raised through phase equilibrium experiments. The liquid-liquid equilibria for ternary systems of water, FA, 2-ethylhexanol, and water, FA, 1-octanol were studied at 298.15 K, 323.15 K. Also, the liquid-liquid equilibria for quaternary systems of water, FA, TMP, 2-ethylhexanol, was studied at 298.15 K. The experimental tie-line data were obtained, and the binary interaction parameter were predicted by NRTL, UNIQUAC activity coefficient model. Ternary systems studies have shown that 2-ethylhexanol exhibits higher separation efficiency than 1-octanol. The NRTL model was more consistent with the experimental results than the UNIQUAC model. Because FA and TMP both have a separation factor of 1 or more, it has been found that FA and TMP can be separated using 2-ethylhexanol. When the ternary system and the quaternary system are compared, the separation of FA appears to be similar.
more목차
1. Introduction 1
2. Experimental 3
2.1. Reagents 3
2.2. Equipment and Analysis 6
2.3. Prediction of binary interaction parameter 8
3. Result and discussion 10
3.1. Liquid-liquid equilibria of ternary systems at 298.15 K 10
3.2. Liquid-liquid equilibria of ternary systems at 323.15 K 18
3.3. Liquid-liquid equilibria of quaternary systems at 298.15 K 25
3.4. Comparison of ternary and quaternary system 39
4. Conclusion 41
5. Reference 42
