Wärtsilä Solutions for Marine and Oil&Gas; Markets 2013
Wärtsilä Solutions for Marine and Oil&Gas; Markets 2013
Wärtsilä Solutions for Marine and Oil&Gas; Markets 2013
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
GAS RECOVERY<br />
The first VOC condensation system with zero emissions was installed on<br />
the shuttle tanker Stena Alexita, operated by ExxonMobil in the North Sea<br />
oil fields.<br />
Wärtsilä Hamworthy<br />
VOC Recovery<br />
Our field proven VOC recovery system is self supplied with energy <strong>and</strong><br />
results in zero Volatile Organic Compounds (VOC) emissions.<br />
These emissions from the global sea transportation of crude oil <strong>and</strong><br />
associated products, account <strong>for</strong> a total of more than 5 million tonnes<br />
per year. The Wärtsilä Hamworthy VOC plant ensures that cargo tank<br />
pressures are maintained low enough to keep the vent valve closed.<br />
This prevents VOC from being emitted to the atmosphere, <strong>and</strong> the<br />
gas is instead fed to the VOC recovery module, where it is treated by<br />
compression <strong>and</strong> condensation. The liquefied gas is then fed to the<br />
VOC fuel tank.<br />
We have also developed a system <strong>for</strong> VOC recovery in offshore<br />
oil loading applications. It exceeds the Norwegian authorities’<br />
requirements <strong>for</strong> Non-Methane Volatile Organic Compounds (NMVOCs)<br />
by reducing VOC emissions by 100 per cent, including methane, which<br />
is not currently specified in the regulatory requirements.<br />
89
Change language