Yang Peng, power plant division general manager at SMDERI, an affiliate of China State Shipbuilding Corporation (CSSC), said SMDERI has developed two types of dedicated fans – the centrifugal fan for high temperature and the sealing fan, both of which can be customised according to flow pressure.
“The use of these high temperature fans used by exhaust gas cleaning systems is considered to be an emerging market and they are not yet available in the market,” Yang told an audience at Marintec China 2019 in Shanghai on Wednesday.
Yang said marine cryogenic selective catalytic reduction (SCR) systems or desulphurisation systems like scrubbers require high temperature fan to feed high temperature flue gas into pipelines, while sealing fan is needed for sealing of pipeline to prevent leakage.
“In view of the changing requirement of energy saving and emission reduction of ship’s main engine, we have independently designed and developed the sealing fan and high temperature variable frequency fan suitable for SCR system and EGCS,” Yang said.
From 1 January 2020, all ocean-going ships will be required to burn bunkers with a maximum sulphur content of 0.5% under IMO regulation. For ships that wish to continue burning 3.5% high sulphur bunkers, they will have to be retrofitted with scrubbers to bring down the sulphur content of the heavy fuel oil.
“With the widespread application of desulphurisation systems, the demand for high temperature fan and sealing fan will increase,” he believed.
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