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DNV releases a new concept tanker for the future tanker, which uses an innovative structural line type to minimize or even eliminate the need for ballast water settings; the use of liquefied natural gas as a ship fuel virtually eliminates emissions from the atmosphere; using innovative technology will each The effective use of hundreds of tons of cargo oil vapor in the voyage is another major contribution of DNV to lead the tanker shipping industry to a new era of environmental protection.
DNV has assembled this innovation in the field of innovation and R&D, and called this new concept tanker “Trialityâ€, which is intended to achieve three breakthroughs in tanker performance: better than the environmental characteristics of traditional tankers. Advantage; it is based on the feasibility of innovation and optimization of existing technologies; it has an economic advantage over traditional tankers that use fuel as fuel for ships.
DNV CEO Henrik O Madsen introduced the “Triality†Future Concept Super Tanker (VLCC) based on this new concept tanker in London, he said, “I believe natural gas will be the main fuel for merchant ships. Most of them. Shipowners will order LNG-fueled vessels by 2020. As a leading international classification society, DNV will play a more important role in developing more environmentally friendly solutions for the shipping industry. I am the DNV innovation team. The research results presented today are very proud of the contribution made by the tanker industry."
“Triality†Future Concept VLCC ships have the following advantages over traditional VLCC ships:
? Achieve carbon dioxide emissions by 34%
? Do not need ballast water
Eliminate the discharge of cargo oil vapor (VOC) and use it effectively
? 25% reduction in energy consumption
The vessel's NOx reduction can exceed 80%, and sulfur oxides and particulate matter can be reduced by 95%. She will reduce the health effects on busy routes and residents around the port.
The tanker uses two high-pressure dual-fuel low-speed main engines, using LNG as fuel and marine light diesel as pilot fuel. The next phase of its development is the application of dual-fuel medium-speed mainframes and pure natural gas mainframes.
The “Triality†Future Concept VLCC ship uses two I-type C-type pressure tanks. The pressure tanks are located on the deck in front of the ship's superstructure and can store 13,500 cubic meters of LNG – enough to sail 25,000 nautical miles. The generator uses dual fuel (liquefied natural gas and marine light diesel), and the auxiliary boiler uses the recovered cargo oil vapor (volatile organic compounds) as fuel to produce steam for the cargo pump.
Conventional tankers require ballast water at no load to ensure that the propeller is submerged and that the vessel is adequately drafted to protect the bottom of the vessel from slamming. This concept ship uses a V-hull and an innovative cargo hold arrangement, making zero ballast water possible. Other types of tankers such as Suez-type tankers, Aframax tankers and small tankers can greatly reduce the need for ballast water if this new concept is adopted. The use of the V-hull also reduces the wet surface of the round trip, reduces the square factor and improves the hull energy efficiency.
Traditional VLCCs typically require 80,000 to 100,000 tons of seawater at no load. Microorganisms carried in seawater can destroy ecosystems in other areas, and the ballast of loaded ballast water consumes large amounts of fuel. The initial spraying of ballast tanks and the maintenance during their operation are also plaguing shipowners.
“Triality†Future Concept VLCC ships can collect and liquefy 500 tons of cargo oil vapor in a round trip. Liquefied LPG will be stored in deck tanks, about half of which will be used as boiler fuel during cargo discharge, and the rest will be returned to the cargo tanks and then transferred to shore during cargo discharge.
When talking about the construction of this concept ship will increase the additional cost but reduce the operating cost, Mai Hengli clearly pointed out that "we can completely build a ship with excellent environmental performance and at the same time obtain economic benefits. According to our prediction, Triality future concept VLCC ship The construction cost may increase by 10-15% compared with the traditional VLCC, but the operating cost reduced during the entire life cycle will reach 25% of the traditional VLCC new ship construction cost.
DNV CEO McHenry finally concluded, “Triality is still in the concept stage and requires detailed design before construction. But this concept ship uses proven equipment, systems and technologies. Although conceptually Many or some innovative elements have been introduced, but they are completely feasible in design. I believe that this concept ship will arouse great interest from shipyards and tanker operators. The first Triality future concept VLCC ship is expected to be at the end of 2014. Construction is complete."