【作者】

Changseong Ryu

【摘要】

该论文已在赫尔辛基举行的第28届CIMAC世界大会上发表，论文的版权归CIMAC所有。 Oxides of nitrogen (NOx) emissions from marine diesel engine by fuel combustion source lead to serious environmental problems. A lot of researches on the NOx reduction technology development have been conducted. One of NOx reduction technologies, Selective Catalytic Reduction (SCR) is a technology proven in many industrial fields. IMO (International Maritime Organization) Tier 3 regulation is scheduled to take effect in emission control areas (ECAs) from Jan 1st 2016, in accordance with the mandatory requirement. In order to develop technology which is able to meet the regulation, Doosan Engine has developed SCR from 2010. DelNOx is Doosan Engine’s brand name applied to Low Pressure SCR system. DelNOx also is mounted at the exhaust gas funnel downstream of the after turbocharger. The DelNOx catalyst is the low temperature catalyst enhancing NOx reduction efficiency at lower and wide temperatures range over 220°C and improving resistance to sulfur. The reactor is provided with an automatically operating soot blowing system. By using soot blowing on the surface of the catalyst, dust deposits can be prevented and the catalyst life-time can be increased. The hybrid dosing system is composed of four main units such as blower, oil burner, urea supply unit and decomposition unit. The components in the hybrid dosing system are mounted on a skid frame and are easy to install and maintain. Functions of hybrid dosing system are urea decomposition, catalyst regeneration and pre-heating before SCR operation. NWACS, control system of DelNOx is an effective system to interface with engine and operate easily. DelNOx has been verified by the Classification society, DNV-GL in 2013, according to Scheme-A. This statement of compliance concerns the first-ever Low Pressure SCR on a low speed diesel engine. Also, DelNOx has been verified by both MDT and Win-GD, 2-stroke diesel engine designers, in 2014. Doosan Engine received the first order of Tier 3 compliance 2-stroke diesel engine with SCR in the world from Samsung Heavy Industries, its ship owner is Reliance. DelNOx has been designed and manufactured by Doosan Engine’s technologies. DelNOx together with 2-stroke diesel engine will be tested and confirmed on test bed by 2015 and installed on 87k ethane carrier and delivered to ship-owner in 2016.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

4

返回