알림마당
특별초청 세미나
미래를 창조하는 포스텍 화학공학과
Present Trends of Syngas Conversion Technology
- 일자
- 2016.11.23 (수)
- 시간
- 16:30
- 연사
- Dr. Geunjae Kwak
- 장소
- RIST 3동 3326호
- 소속
- 한국화학연구원 탄소자원화연구소
(Abstract)
Syngas conversion generally involves the synthesis of hydrocarbons (of varying chain lengths) and chemicals (light olefins and BTX) from syngas, which consists primarily of a mixture of carbon monoxide and hydrogen. When configured to maximize the production of paraffinic hydrocarbons, the resulting product mixture is often described as syncrude. Most of world’s gas reserves are in the form of relatively small fields that would not be applicable to large-scale GTL or LNG technology. Thus, new and enhanced GTL technology has recently been attracted a lot of interest that may be viable at low production capacities (below 10,000 bpd) because less than 10% of the world’s gas fields are large enough to sustain a 10,000+ bpd GTL plant. In addition, the primary limitations of conventional Fischer-Tropsch GTL technology include the removal of process heat that can produce hot spots and severely shorten catalyst life, and effective management of two-phase flow as synthesis gas transforms into liquid hydrocarbons via CO hydrogenation chemistry. Both of these issues can be addressed with microchannel process technology, which improves heat transfer and controls flow through many parallel channels. When utilized in modular fashion, the application of microchannel process technology is a natural fit for converting associated gas into liquid hydrocarbon via the GTL process. In this talk, we introduced our new and enhanced Fischer-Tropsch reaction system design for small scale GTL
One of the biggest challenges in syngas conversion is to increase desired product selectivity, particularly favouring production of middle-distillate liquid fuels (C5-C20) and light olefins (C2-C4). Generally, the hydrocarbon products of CO hydrogenation follow the broad, poly dispersed Anderson-Schulz-Flory distribution, so the synthesized hydrocarbon products must be hydrocracked and refined to desired chemicals. To increase the energy-and cost-efficiency of these processes, bifunctional catalysts, which contain both active sites (Co, Fe, or novel metals) for FTS and acid sites for in situ hydrocracking, and series reactions where independent reactions sequentially occur in the intermediates synthesis and the formation of desired chemicals have been introduced. For example, zeolite supported catalysts have demonstrated highly improved liquid fuel selectivity as a result of hydrocracking of heavy hydrocarbons at acid sites. Selectivity control of the produced hydrocarbons is one of the key challenges of research into syngas conversion. This presentation summarizes the effects of key factors on catalytic properties, particularly the product selectivity, and highlights recent developments of novel Fischer-Tropsch catalysts and new strategies with an aim at controlling the product selectivity with our recent results.
37673 경북 포항시 남구 청암로 77 포항공과대학교 화학공학과 (환경공학동) ㅣ전화 : 054-279-2720 ㅣ팩스 : 054-279-5528
Copyright © chemical engineering. All rights reserve
본 사이트는 IE 상위버전에 최적화 되어있습니다.