A new CO conversion quench reactor design
| Autor: | Uwe Prüfert, Konrad Uebel, Bernd Meyer, Philip Rößger, Andreas Richter |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Quenching
Imagination Chemical substance Materials science business.industry 020209 energy General Chemical Engineering media_common.quotation_subject Energy Engineering and Power Technology 02 engineering and technology Water-gas shift reaction Fuel Technology 020401 chemical engineering Waste heat 0202 electrical engineering electronic engineering information engineering Coal gasification Coal 0204 chemical engineering Process engineering business Syngas media_common |
| Zdroj: | Fuel Processing Technology. 148:198-208 |
| ISSN: | 0378-3820 |
| DOI: | 10.1016/j.fuproc.2016.02.022 |
| Popis: | Syntheses downstream of coal gasifiers face specific requirements regarding syngas quality. High syngas H2/CO ratios are a typical requirement. A new quench concept for entrained-flow gasifiers has been developed in order to increase the H2/CO ratio within the quench vessel and thereby minimize efforts in the subsequent catalytic water–gas shift reaction (WGSR). To achieve this target, steam instead of water will be injected into the quench chamber to realize CO conversion via homogeneous WGSR. The concept allows a flexible mode of operation, such as full or partial water quenching with subsequent waste heat utilization for high and medium-pressure steam production. This allows self-sufficiency in terms of steam and additionally offers the potential to increase the overall plant efficiency. To test the concept, three different syngases from various feedstock and two inlet design configurations will be investigated using CFD and compared to one other. The numerical setup has been validated against gasification reactor measurements and simulation, respectively. A sensitivity analysis shows the performance and flexibility of the proposed concept. |
| Databáze: | OpenAIRE |
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