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Material transporting freezing system of LNG ship and freezing material transporting method

A refrigeration system and ship technology, applied in ship accessories, transportation and packaging, ships, etc., can solve the problems of volatilization and LNG loss, and achieve the effect of avoiding heat volatilization and reducing loss.

Active Publication Date: 2019-04-26
上海汇舸环保科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the transfer process of LNG, it will be exposed to heat during the transfer from the LNG transport ship to the LNG transport tanker, which will cause serious volatilization and more loss of LNG

Method used

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  • Material transporting freezing system of LNG ship and freezing material transporting method
  • Material transporting freezing system of LNG ship and freezing material transporting method
  • Material transporting freezing system of LNG ship and freezing material transporting method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] As shown in the figure, the LNG ship material delivery refrigeration system includes an LNG storage tank 28, a ship internal combustion engine 13 and a nitrogen storage tank 23. The ship internal combustion engine 13 is connected with an internal combustion engine exhaust port 4, and the LNG storage tank 28 is arranged in On the ship, the LNG storage tank 28 is connected with an LNG delivery inner pipe 40, and the outer periphery of the LNG delivery inner pipe 40 is also wrapped with an outer protection tube 19, which forms a double-layer tube, and an insulation layer is also installed on the outer protection tube 19 A BOG output pipe 27 is also connected between the LNG storage tank 28 and the BOG storage tank 10, and a liquid nitrogen storage tank 24 is installed below the nitrogen storage tank 23;

[0028] The first pulley 30, the second pulley 31, the auxiliary pulley 35 and the main shaft rod 41 are respectively installed on the internal combustion engine 13 of the ...

Embodiment 2

[0039] As shown in the figure, the LNG ship material delivery refrigeration system includes an LNG storage tank 28, a ship internal combustion engine 13 and a nitrogen storage tank 23. The ship internal combustion engine 13 is connected with an internal combustion engine exhaust port 4, and the LNG storage tank 28 is arranged in On the ship, the LNG storage tank 28 is connected with an LNG delivery inner pipe 40, and the outer periphery of the LNG delivery inner pipe 40 is also wrapped with an outer protection tube 19, which forms a double-layer tube, and an insulation layer is also installed on the outer protection tube 19 A BOG output pipe 27 is also connected between the LNG storage tank 28 and the BOG storage tank 10, and a liquid nitrogen storage tank 24 is installed below the nitrogen storage tank 23;

[0040] The first pulley 30, the second pulley 31, the auxiliary pulley 35 and the main shaft rod 41 are respectively installed on the internal combustion engine 13 of the ...

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Abstract

The invention relates to a material transporting freezing system of an LNG ship. The system comprises an LNG storage tank, an internal combustion engine of the ship and a nitrogen storage tank. An exhaust port of the internal combustion engine is connected to the internal combustion engine of the ship, the LNG storage tank is arranged on the LNG ship and is characterized in that the LNG storage tank is connected to an LNG conveying inner pipe, an outer protecting pipe is also coated to the periphery of the LNG conveying inner pipe, a BOG output pipe is also connected between the LNG storage tank and the BOG storage tank, and a liquid nitrogen storage tank is mounted below the nitrogen storage tank. The material transporting freezing system has the beneficial effects that a material transporting pipeline is frozen in an LNG transfer process, so that a low temperature layer is formed in the pipeline, volatilization of LNG encountering head in the transfer process is avoided, the loss isreduced and the system is suitable for being popularized and used.

Description

technical field [0001] The invention relates to the field of LNG ship transportation, in particular to an LNG ship BOG recovery system and an operating method thereof. Background technique [0002] LNG (Liquefied Natural Gas), the English abbreviation for liquefied natural gas. Natural gas is a combustible gas that is naturally extracted from gas fields and is mainly composed of methane. LNG is condensed into a liquid by cooling gaseous natural gas at normal pressure to -162°C. Natural gas liquefaction can greatly save storage and transportation space, and has the characteristics of large calorific value and high performance. [0003] LNG is a clean and efficient energy source. Importing LNG helps energy consuming countries diversify energy supply and ensure energy security, while exporting LNG helps natural gas producing countries effectively develop natural gas resources, increase foreign exchange income, and promote national economic development, so LNG trade is becomi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B25/12B63B25/26
CPCB63B25/12B63B25/26
Inventor 杨德成邓佳佳郑中棒徐荣伟
Owner 上海汇舸环保科技集团股份有限公司
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