보고서 정보
주관연구기관 |
한국전력공사 Korea Electric Power Research Institute |
보고서유형 | 1단계보고서 |
발행국가 | 대한민국 |
언어 |
한국어
|
발행년월 | 2011-09 |
과제시작연도 |
2010 |
주관부처 |
지식경제부 Ministry of Knowledge Economy |
등록번호 |
TRKO201400028923 |
과제고유번호 |
1415113908 |
사업명 |
에너지자원기술개발지원 |
DB 구축일자 |
2014-11-29
|
키워드 |
연소전.이산화탄소 포집.합성가스.석탄가스화복합발전.촉진수성가스전환.건식 재생.흡수제.내마모도.CO 전환.Pre-Combustion.CO2 Capture.Synthesis Gas.IGCC.SEWGS.Dry Regenerable.Sorbent.Attrition Resistance.CO Conversion.
|
초록
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2. 개발내용 및 결과
1) 1차년도
- 고온활성 CO2 흡수제 및 유동층 WGS 촉매 기초 조성 선별(흡수제 9종, 촉매 8종)
- CO2 흡수제 및 유동층 WGS 촉매 기초 조성을 대상으로 슬러리 제조 및 기초 성형 특성
- 9종의 흡수제 조성에 대한 슬러리 제조 및 분무성형제조 (8 kg * 9종) : 점도 < 1000 cP, 고형분 함량 : ~30 wt%, pH = 11~12
- 8종의 촉매 조성에 대한 슬러리 제조 및 분무성형제조 (8 kg * 8종) : 점
2. 개발내용 및 결과
1) 1차년도
- 고온활성 CO2 흡수제 및 유동층 WGS 촉매 기초 조성 선별(흡수제 9종, 촉매 8종)
- CO2 흡수제 및 유동층 WGS 촉매 기초 조성을 대상으로 슬러리 제조 및 기초 성형 특성
- 9종의 흡수제 조성에 대한 슬러리 제조 및 분무성형제조 (8 kg * 9종) : 점도 < 1000 cP, 고형분 함량 : ~30 wt%, pH = 11~12
- 8종의 촉매 조성에 대한 슬러리 제조 및 분무성형제조 (8 kg * 8종) : 점도 ~1000cP, 고형분 함량 :~30 wt%, pH = 9~10
- CO2 흡수제 : 평균입경 : 112~125 ㎛, 입자크기분포 : 45~250 ㎛, 충진밀도 : 0.63 ~ 0.83 g/cc, 내마모도(AI) : 2.6~12.0 %, CO2 흡수능 : 5~13.2 wt% (200℃, 20 bar)
- WGS 촉매 : 평균입경 : 132~150 ㎛, 입자크기분포 : 53~250 ㎛, 충진밀도 : 0.76 ~ 0.91 g/cc, 내마모도(AI) : 7.0~35.0 %, CO 전환율 : >80 %
Abstract
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Ⅲ. R&D scope, contents and results
The research activities to achieve the target of the this project are as follows:screening and selection of materials (active materials, support materials, reaction promoters, and binder matrices), design of CO2 sorbent and WGS catalyst compositions w
Ⅲ. R&D scope, contents and results
The research activities to achieve the target of the this project are as follows:screening and selection of materials (active materials, support materials, reaction promoters, and binder matrices), design of CO2 sorbent and WGS catalyst compositions which can provide the physical properties required for fluidized-bed applications, test of the spray-drying procedure and method, control of slurry properties for spray-drying, investigation of spray-drying conditions and calcination temperatures, the acquirement of evaluation method to get the physical properties and reactivity of the CO2 sorbents and WGS catalysts in high temperature(200~40 0℃) and high pressure(20 bar) conditions.
Active materials for CO2 sorbents basically used a hydrotalcite promoted with alkali metal (K or Na) carbonate, alkali hydrogencarbonate (K or Na) and sodium hydroxide, and MgO-hydrotalcite compound promoted with potassium carbonate. For WGS catalyst, various transition metal oxide were used as an active component with various support materials (Al2O3, ZrO2, etc.) and binders.
CO2 sorbents and WGS catalysts were prepared by spray-drying method. The slurry properties (viscosity, pH, solid contents) and property control method (organic additives) suitable for spray-drying was determined for the designed compositions. Green bodies of the sorbents were obtained by spraying the slurries. Final products were prepared by calcination of the green bodies .
The physical properties of the prepared CO2 sorbents and WGS catalyst (e.g., attrition index, tapped density, particle size, etc.) for different calcination temperatures were measured according to the standard test methods. CO2 sorption capacities of the spray-dried CO2 sorbents were measured using a TGA and a bubbling fluidized-bed reactor(SEWGS reactor) with simulated syngas. Among 33 spray-dried sorbents, most of sorbents satisfied the physical properties required for fluidized-bed applications. Especially, they showed high mechanical strength stronger than commercial fluidized-catalytic-cracking catalyst. The TGA weight gain of P13 and PKM-1 sorbents were exceeding 10 wt% and the regenerability of the sorbents were more than 90%. The CO2 sorption capacities obtained using the bubbling fluidized-bed reactor were about 10 wt% for P series sorbents. The analysis of the physical properties and reactivities for the spray-dried sorbents showed that the developed sorbents had excellent performance for application to CO2 capture from warm syngas in a fluidized-bed process.
The CO2 absorption and regeneration properties of various sorbents such as various metal oxides and metal oxides promoted with alkali metal were investigated in Kyungpook National University. CO2 sorption capacity of Na-Ti and Na-Zr sorbents are range of 12~13 wt% at 200 oC and 20 bar.
In the case of WGS catalyst, Five sets of the WGS catalysts were prepared using a spray drying method and evaluated by standard experimental method. Among the WGS catalyst PC-13 catalyst appeared to satisfy the basic physical requirements for fluidized-bed application. PC-13 catalyst also showed 95% CO conversion rate at temperature of 573 K, 20 bar.
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