Experimental study on removal performance of SO2 and NOx in marine exhaust gas using seawater/urea peroxide solution and analysis of ions concentration change

Hydrogen can be produced in undesired ways such as a high temperature metal oxidation during an accident. In this case, the hydrogen must be carefully managed. A hydrogen mitigation system (HMS) should be installed to protect a containment of a nuclear power plant (NPP) from hazards of hydrogen produced by an oxidation of the fuel cladding during a severe accident in an NPP. Among hydrogen removal devices, passive auto-catalytic recombiners (PARs) are currently applied to many NPPs because of passive characteristics, such as not requiring a power supply nor an operators’ manipulations. However, they offer several disadvantages, resulting in issues related to hydrogen control by PARs. One of the issues is a hydrogen stratification in which hydrogen is not well-mixed in a compartment due to the high temperature exhaust gas of PARs and accumulation in the lower part. Therefore, experimental simulation on hydrogen stratification phenomenon by PARs is required. When the hydrogen stratification by PARs is observed in the experiment, the verification and improvement of a PAR analysis model using the experimental results can be performed, and the hydrogen removal characteristics by PARs installed in an NPP can be evaluated using the improved PAR model.

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Experimental Study on the Selective Removal of SO2 from a Ship Exhaust Gas Stream Using a Membrane Contactor

Industrial & Engineering Chemistry Research ◽

10.1021/acs.iecr.9b01181 ◽

2019 ◽

Vol 58 (32) ◽

pp. 14897-14905 ◽

Cited By ~ 7

Author(s):

Hyung Jin Park ◽

Umair H. Bhatti ◽

Sang Hyun Joo ◽

Sung Chan Nam ◽

Sung Yeol Park ◽

...

Keyword(s):

Experimental Study ◽

Selective Removal ◽

Membrane Contactor ◽

Exhaust Gas ◽

Removal Of So2

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Experimental study of the influence of exhaust gas recirculation on heat transfer in the firedeck of a direct injection diesel engine

Energy Conversion and Management ◽

10.1016/j.enconman.2017.10.003 ◽

2017 ◽

Vol 153 ◽

pp. 304-312 ◽

Cited By ~ 9

Author(s):

A.J. Torregrosa ◽

A. Broatch ◽

P. Olmeda ◽

J. Salvador-Iborra ◽

A. Warey

Keyword(s):

Heat Transfer ◽

Experimental Study ◽

Diesel Engine ◽

Direct Injection ◽

Exhaust Gas Recirculation ◽

Exhaust Gas ◽

Direct Injection Diesel Engine ◽

Gas Recirculation

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Design and Experimental Study on the Urea-SCR Converter Exhaust System of the Marine Diesel Engine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.291-294.1889 ◽

2013 ◽

Vol 291-294 ◽

pp. 1889-1894

Author(s):

Lei Jiang ◽

Jun Huang

Keyword(s):

Experimental Study ◽

Diesel Engine ◽

Pressure Loss ◽

Catalytic Converter ◽

Exhaust System ◽

Marine Diesel Engine ◽

Exhaust Gas ◽

Marine Diesel ◽

New Type ◽

Design Requirements

Urea-SCR catalytic converter can effectively reduce the NOx emission of diesel engines, but meanwhile catalytic converter will cause some pressure loss in the exhaust system, which has negative influences on the engine performances. In this paper, the method of theoretical analysis calculated the pressure loss of the SCR catalytic converter, and designing a new type of exhaust gas pipe. Through the test to meet the design requirements,the results can provide a reference for optimum design of SCR catalytic converters and assembling.

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