막 분리-응축장치 하이브리드 시스템에 의한 폐수 중 이소프로필알코올 회수 및 농축에 관한 연구
- Alternative Title
- A Study on Recovery and Concentration of Isopropylalcohol from Waste Water by Hybrid membrane separation-condensing unit
- Abstract
- Isopropyl alcohol(IPA) wastewater is a mixture of wastewater and an alcohol produced by semiconductors manufacturing industry. It is difficult to treat due to its organic toxicity and high chemical oxygen demand One of suitable processes used for treating this kind of mixture is Separation by Membrane. The Separation by Membrane in the carried out by the solution-diffusion mechanism in process. The selective solution of the affinity permeable component on the membrane surface. The molecules of the dissolved component on the membrane surface are transmitted and separated through selective diffusion in the film thickness direction. It is particular economical to selectively permeate and separate components having low concentrations among the mixtures. Process design is a process that separates IPA 5% and concentrates up to 99.99%.
Firstly the Separation by Membrane process prepared a polypropylene(PP) hollow fiber membrane separator in which only isopropyl alcohol was selectively transmitted. The separation membrane was prepared by a Thermal Induced Phase Separation (TIPS) method of dissolving PP in a potential solvent dilute at high temperature, and the diluent composed of polypropylene and various other liquids was prepared at a weight content ratio (30:70,32:68, 40:60) to select the optimal conditions.(40:60) The gas selectively separated from IPA in the permutation process was experimented in the condensation separation process. The first condenser was tested at 45 °C, 55 °C and 65 °C, respectively, and the driving experiment was carried out at 0 °C and 5 °C in the second condenser. As a result, the primary condensation was 45 ℃, and in the case of secondary condensation at 5 ℃. The process recalled up to 50 % of IPA.
Finally In the next step as a result of the process design simulation of extracting a high concentration IPA product by concentrating a 50% concentration of IPA, it is composed of two empty distillation towers, and if cyclohexane is separated and dissolved, IPA can be recovered up to 99.99 %
- Issued Date
- 2020
- Awarded Date
- 2020. 2
- Type
- Dissertation
- Publisher
- 부경대학교
- Affiliation
- 부경대학교 대학원
- Department
- 대학원 화학공학과
- Advisor
- 우희철
- Table Of Contents
- 제1장. 서 론 1
제2장. 이 론 5
2.1. 유기성 폐수 처리방식 6
2.1.1. 살수여상법 8
2.1.2. 접촉산화법 11
2.1.3. 회전원판법 14
2.2. 추출 17
2.2.1. 추출조작 17
2.2.2. 평행관계의 표현 18
2.2.3. 추출용제의 선정 27
2.2.4. 액-액계의 물질 이동속도 31
2.3. 투과증발 33
2.3.1. 원리 33
2.3.2. 용해-확산 이론 35
2.3.3. 투과증발의 막 공정 추진력 39
2.3.4. 공정조건 변화에 따른 투과증발 특성 44
2.4. 막 증류공정 47
2.4.1. 막 증류 공정의 개요 및 원리 47
2.4.2. 막 증류 공정의 정로 50
2.4.3. 막 증류용 분리막 54
2.4.4. 기체 투과이론 56
2.5.IPA/물 분리의 통합 공정 필요성 59
2.5.1. 막 분리 공정 59
2.5.2. 응축장치 65
제3장. 실험재료 및 방법 66
3.1. 실험재료 66
3.1.1. Chemicals 66
3.2. 실험방법 67
3.2.1. 막 소재 선정 67
3.2.2. 중공사 분리막 제조 69
3.2.3. 중공사 분리막 측정 75
3.2.4. 막분리-응축 통합장치 80
3.3. 모사모델 84
3.3.1. 모델이론 84
3.3.2. 모델이론 실험 89
제4장. 결과 및 고찰 91
4.1. 분리막 개발 91
4.1.1. IPA 분리용 공중사 분리막 제조 91
4.1.2. 분리막 내 친유성 고분자 도포율 최적화 95
4.2. 막분리-응축장치 결과 101
4.2.1. Feed IPA 온도별 투과속도 101
4.2.2. Feed IPA 농도별 투과속도 104
4.2.3. Feed IPA 농도별 Flux 농도 107
4.2.4. 개발된 중공사막과 문헌치와 투과속도 109
4.2.5. 1차 온도별 응축 및 분리거동 117
4.2.6. 2차 온도별 응축 및 분리거동 120
4.3. 통합공정 모사 모델 확립 및 최적화 122
4.3.1. 시간별 Feed Tank 내 IPA 농도 122
4.3.2. 온도-농도별 Feed Tank 내 IPA 투과속도 124
4.3.3. 물 반영 온도-농도별 Feed Tank 내 총 투과속도 126
4.3.4. 투과속도, 분리계수, PSI의 변화 모사인자 129
4.3.5. 1,2차 응축온도 최적화 138
4.3.6. 통합공정 최적화 141
4.4. IPA 농축율 향상 공정설계 모델 145
4.4.1. 공비증류 설계 145
4.4.2. 공비설계 결과 148
제5장. 결 론 154
참고문헌 156
- Degree
- Doctor
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