摘要:
A fuel gas supply system of a ship is provided for supplying fuel gas to a high-pressure gas injection engine of a ship, wherein LNG is extracted from an LNG tank (1) of the ship, compressed at a high pressure via a first pump (2) and a second pump (4), gasified, and then supplied to the high-pressure gas injection engine. The second pump is a high pressure pump which pressurizes the extracted LNG to meet the fuel gas pressure requirements of for the high-pressure gas injection engine, and a pressure control valve is installed in parallel with the second pump (4) in the fuel supply line (L1).
摘要:
A LNG storage container (50) includes: an inner shell (51) made of a metal withstanding a low temperature of the LNG and configured to store the LNG inside; an outer shell (52) made of a steel withstanding an internal pressure of the inner shell (51) and configured to enclosing the outside of the inner shell such that a space is formed between the inner shell (51) and the outer shell (52); and a heat insulation layer part (53) installed in the space between the inner shell (51) and the outer shell (52) and configured to reduce a heat transfer. Accordingly, it is possible to efficiently store LNG or PLNG pressurized at a predetermined pressure and supply the LNG or PLNG to a consumption place, to reduce manufacturing costs by minimizing the use of a metal having excellent low temperature characteristic, to reduce a thickness of an inner container by minimizing a difference between the internal pressure and external pressure of the inner container, thereby manufacturing the container (50) at low cost, to satisfy consumer's various demands, and to ensure diversity in kinds and sizes of container carriers. Furthermore, it is possible to endure various utilizations according to characteristics of cargos, such as pre-processed natural gas, non-pre-processed natural gas, and refined natural gas. Due to the reduction of the liquefaction process, equipment costs and processing costs may be reduced. Sloshing load, which may occur during transportation of liquid goods, is reduced or negligible.
摘要:
An LNG storage container carrier (700) includes: one or more cargo holds (720) provided on a hull (710) such that upper portions thereof are opened; a plurality of first (730) and second (740) upper supports installed on the cargo holds (720) in a width direction and a length direction to partition the upper portions of the cargo holds (720) into a plurality of openings, wherein storage containers (791) are vertically inserted into the openings and supported; and a lower support (750) installed under the cargo holds (720) and supporting the bottoms of the storage containers (791) inserted into the openings. Accordingly, it is possible to efficiently and stably transport the storage containers (791) storing LNG or PLNG pressurized at a predetermined pressure. Such storage containers (791) may be transported through simple modification of the existing container carrier. In particular, structures such as stanchion and lashing bridge for supporting the upper container boxes may be utilized in the container carrier, thereby minimizing time and cost for manufacturing the storage container carrier. Since a spare space is provided under the storage container, various pipes and equipments may be easily installed. It is possible to prevent the loaded storage containers from obstructing the sight necessary for navigation of the carrier.
摘要:
A method for producing pressurized liquefied natural gas and a production system therefor are provided. The method for producing pressurized liquefied natural gas includes: performing a dehydration process (S11) to remove water from natural gas supplied from a natural gas field, without a process of removing acid gas from the natural gas; and performing a liquefaction process (S12) to produce pressurized liquefied natural gas by liquefying the natural gas, which has undergone the dehydration process, at a pressure of 13 to 25 bar and a temperature of -120 to - 95°C, without a process of fractionating natural gas liquid (NGL). Accordingly, it is possible to reduce plant construction costs and maintenance expenses and reduce LNG production costs. In addition, it is possible to guarantee high economic profit and reduce payback period in small and medium-sized gas fields, from which economic feasibility could not be ensured by the use of a conventional method.
摘要:
A LNG storage container (50) includes: an inner shell (51) made of a metal withstanding a low temperature of the LNG and configured to store the LNG inside; an outer shell (52) made of a steel withstanding an internal pressure of the inner shell (51) and configured to enclosing the outside of the inner shell such that a space is formed between the inner shell (51) and the outer shell (52); and a heat insulation layer part (53) installed in the space between the inner shell (51) and the outer shell (52) and configured to reduce a heat transfer. Accordingly, it is possible to efficiently store LNG or PLNG pressurized at a predetermined pressure and supply the LNG or PLNG to a consumption place, to reduce manufacturing costs by minimizing the use of a metal having excellent low temperature characteristic, to reduce a thickness of an inner container by minimizing a difference between the internal pressure and external pressure of the inner container, thereby manufacturing the container (50) at low cost, to satisfy consumer's various demands, and to ensure diversity in kinds and sizes of container carriers. Furthermore, it is possible to endure various utilizations according to characteristics of cargos, such as pre-processed natural gas, non-pre-processed natural gas, and refined natural gas. Due to the reduction of the liquefaction process, equipment costs and processing costs may be reduced. Sloshing load, which may occur during transportation of liquid goods, is reduced or negligible.
摘要:
The present invention relates to a fuel gas supply system of an LNG carrier for supplying fuel gas to a high-pressure gas injection engine of an LNG carrier, wherein LNG is extracted from an LNG storage tank (1) of the LNG carrier, compressed at a high pressure, gasified, and then supplied to the high-pressure gas injection engine.