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http://dx.doi.org/10.7316/KHNES.2019.30.3.201

Start-up Strategy of Multi-Stage Burner for Methanol Fuel Reforming Plant  

JI, HYUNJIN (Agency for Defense Development)
BAIK, KYUNGDON (Agency for Defense Development)
YANG, SUNGHO (Agency for Defense Development)
JUNG, SEUNGKYO (Daewoo Shipbuilding Marine Engineering)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.30, no.3, 2019 , pp. 201-208 More about this Journal
Abstract
Recently, a fuel reforming plant for supplying high purity hydrogen is being applied to submarines. Since steam reforming is an endothermic reaction, it is necessary to continuously supply heat to the reactor. A fuel reforming plant for a submarine needs a multi-stage burner (MSB) to acquire heat and convert the combustion gas to $CO_2+H_2O$. The MSB has problems that the combustion imbalance occurs during start-up due to the temperature restriction of the combustion gas. This problems can be solved by burning $H_2O$ together with fuel and $O_2$. In this study, the simulation results of MSB were analyzed to determine the optimum flow rate of $H_2O$ supplied to the 6-stage burner. When the flow rate of $H_2O$ was low, combustion was concentrated on the burner#6 in comparison with the burner#1-#5. This combustion concentration improved as the supply amount of $H_2O$ increased. As a results, it was necessary to supply at least 4.9 kmol/h of $H_2O$ (per 1 kmol/h of fuel) to burner#1 in order to maintain the combustion gas temperature of each stage at $750^{\circ}C$ and to convert the final stage burner gas composition to $CO_2+H_2O$.
Keywords
Methanol; Multi-stage burner; Start-up; Fuel reforming plant; Heat exchanger;
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Times Cited By KSCI : 2  (Citation Analysis)
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