1) Natural gas (mainly methane CH4), the cleanest fossil energy; The volume of liquefied natural gas（LNG）is only 1/600 of that of gaseous state, which is convenient for transportation.
2) LNG carrier, with safe transportation and low evaporation rate, the storage tank needs to be under normal pressure or low pressure, and the system needs to be maintained at about -163 ℃. Ultra-low temperature puts forward high requirements for materials and protection system. LNG ships and luxury cruise ships are recognized as the Pearl of the manufacturing crown.
3) LNG ships, with the largest 174000 m3, can be called “sea giants, super freezers and mobile hydrogen bombs”; 1m3 LNG explosion is equivalent to 1.9 tons of TNT. In 1945, the “little boy” was only equivalent to 15000 tons of TNT.
4) “L” liquid cargo maintenance system, only French GTT company and Norwegian Kvaerner company; GTT has many patents for thin-film LNG cargo tanks (Mark III cargo tanks and No.96 cargo tanks), and Kvaerner has MOSS spherical cargo tank technology. South Korea adopts GTT technology and Japan adopts Kvaerner technology; China adopts GTT technology. Countries that want to build LNG ships have to pay Norway and France a high patent fee of 5% of the cost of each ship. A large LNG ship is about 200million dollars, and the patent license fee is about 10million dollars. According to data, the net profit margin of an LNG ship in the Korean shipyard is only 5% – 7%; The construction cycle of Hudong Zhonghua LNG ship is longer than that of its Korean counterparts, and the profit it can obtain is lower.
The integrated automatic control technology on LNG ships is also monopolized by Japanese shipyards.
5) LNG ships are manufactured in Korea, China and Japan, Korea Hyundai Heavy Industry, Samsung heavy industry, Daewoo shipbuilding, China Hudong Zhonghua and Shanghai Jiangnan. In 2018, all 66 ships in the world were obtained by South Korea; In 2021, the world has delivered 38 large LNG ships, which South Korea has undertaken 37 and China has only one. From 2008 to 2021, China only delivered more than 20 LNG ships.
6) In 2021, the revised gross tonnage of global new ship orders was 4573, with China accounting for 49%, South Korea accounting for 38%, and Japan accounting for only 9%; However, South Korea accounted for 91% of LNG ship orders, while China accounted for only 9%.
7) 90000 transport ships in the world, generally using heavy and diesel oil as fuel, consume 370 million tons of fuel every year and produce 20million tons of sulfur oxide; The pollution emitted by an oil tanker in one day is equivalent to the pollution emitted by one million cars on land in one day.
Ships using LNG as fuel power can reduce carbon emissions by 20%, nitrogen oxide emissions by 85% and sulfur emissions by 99%.
8) According to the requirements of the International Maritime Organization (IMO) emission standards, as well as the continuous maturity of technologies and infrastructure such as LNG filling stations, LNG fuel tanks and their monitoring systems, LNG gasification systems, etc., the demand for LNG powered ships continues to increase. China’s shipbuilding industry has ushered in opportunities.
Post time: Jul-04-2022