The two vessels are part of a series of six sisterships - the remaining four will be designed with the flexibility to add an EGCS at a later stage.
The order will enable the new vessels to comply with sulphur emissions legislation without switching to more expensive fuels.
Nils Høy-Petersen, Clean Marine CEO, said that the contract reflects the growing demand for Clean Marine’s multi-stream EGCS solution. “We are very pleased to experience a breakthrough also in the Chinese shipbuilding market and to be selected by Hudong-Zhonghua, a yard which during its 70 years history has delivered over 3,000 quality ships. We also look forward to delivering a cost-effective solution to help Stolt Tankers comply with the new emissions regulations, which comes into force from 2015”, he said.
Stolt Tankers has a strict focus on safety and environmental protection and the EGCS from Clean Marine will ensure that the new vessels operate well within all applicable local and international regulatory requirements, the company said.
Clean Marine developed the EGCS based on advanced vortex chamber technology that is claimed to provide unique cleaning efficiency. The system’s integrated fan and gas recirculation technology allows one EGCS unit to simultaneously serve several combustion units.
The system supplied to Stolt Tankers will be a hybrid system that allows the vessel to operate in all types of water (including low alkaline and saline water) without loss of efficiency. Furthermore, the Clean Marine EGCS meets the current pH limit for washwater discharge in Europe and US by a good margin, the company claimed.
“For vessels operating in European or US waters, inside the emission control areas (ECAs), a maximum sulphur limit of 0.1% will apply from January, 2015,” said Høy-Petersen. “The Clean Marine system supplied to Stolt Tankers will clean both sulphur oxides (SOx) and particulate matter emissions from one main engine, three auxiliary engines and three boilers. In total, a single Clean Marine EGCS unit will manage seven exhaust sources and will be designed to clean 140,000 kg exhaust per hour.”
Installation of the EGCS units is scheduled to take place during 2015.