日本郵船:LPG対応「二元燃料エンジン大型船」建造へ(動画):
NYK: To build LPG-compatible “dual fuel engine large ship”:
NYK:建造兼容LPG的“双燃料发动机大船”
ー 運ぶ燃料・使う燃料が多様化ー
日本郵船:
2021年12月2日
LPG燃料対応の大型LPG・アンモニア運搬船2隻を川崎重工へ発注した。
いずれも2024年の竣工を予定している。
二元燃料エンジンを搭載:
従来の低硫黄燃料油のほかに、LPGにも対応した二元燃料エンジンを搭載。
プロペラの回転力を利用する軸発電機も採用。
完全LPG燃料航行を実現できる。
LPG燃料を使用:
LPGを燃料として使用すれば、
- 従来の燃料油焚き船に比べ、
- 排気ガス中のSOxが95%以上、
- CO2が20%以上削減されるという。
LPGとアンモニアを運搬:
この船が運搬するのは、LPGとアンモニアだ。
- 多様なトレードパターンに応えるため、
- 貨物タンクごとにLPGとアンモニアを分け、
- 相積みにすることもできるという。
Merkmal
https://merkmal-biz.jp/post/4959
NYK to Build Its First Two LPG Dual-Fuel Very Large LPG / NH3 Gas Carriers
NYK Line Unlike conventional VLGCs,
the vessels will be equipped with separate cargo tanks designed to carry LPG and ammonia at the same time to flexibly respond to various trade patterns.
Ammonia is attracting attention
not only as a raw material for chemicals and fertilizers
but also as a future zero-emission fuel that does not emit carbon dioxide (CO2) when burned.
Furthermore, in addition to the LPG dual-fuel engine,
the ships will have a shaft generator that can generate electricity during the voyage by using the rotation of the shaft that connects the main engine to the propeller.
Since the diesel generator can be stopped during normal seagoing transit,
realizing full navigation with LPG fuel will be possible except for the use of a small amount of pilot fuel.
When LPG is used as fuel,
exhaust gas from the ordered VLGCswill contain at least 95% less sulfur oxide (SOx) and 20% less CO2 compared to NYK’s conventional VLGCs using heavy-oil fired engines.
These new VLGCs will comply
not only with the SOx Global Cap regulations* that were tightened from January 2020
but also with the EEDI phase 3 requirements.** For the time being, all future VLGCs ordered by NYK will be equipped with LPG dual-fuel engines.