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LNG filling system, BOG processing system and mobile LNG filling ship

A filling system and processing system technology, which is applied in the field of mobile LNG filling ships and LNG filling systems, can solve the problems of reducing ship shipping efficiency and achieve the effect of reducing energy consumption and safety risks

Active Publication Date: 2016-08-24
SHANGHAI ENN NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limited resources of wharfs with LNG filling capacity, when the number of LNG-powered ships increases, it will inevitably lead to ships needing to wait in line for filling, thereby reducing the efficiency of shipping

Method used

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  • LNG filling system, BOG processing system and mobile LNG filling ship
  • LNG filling system, BOG processing system and mobile LNG filling ship
  • LNG filling system, BOG processing system and mobile LNG filling ship

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Embodiment 1: as figure 1 As shown, the present invention provides an LNG filling system, comprising a liquid cargo tank 1, a cryogenic pump group 2, a filling pipeline 6 and a gas return pipeline; the liquid cargo tank 1 is provided with a liquid injection port and a gas return port, and the liquid cargo The liquid injection port of the tank 1 is connected to the cryopump group 2 through the first pipeline 7, and the cryopump group 2 is connected to the liquid injection port of the LNG fuel tank 5 of the receiving ship through the filling pipeline 6 (the filling pipeline 6 can be One or more, each filling pipeline 6 is connected to an LNG fuel tank 5, including 2 filling pipelines in the present embodiment), the gas return end of the cryopump group 2 and the gas return port of the LNG fuel tank 5 pass through The gas return line is connected to the gas return port of the liquid cargo tank 1 to form a circulation path; the liquid cargo tank 1 can simultaneously refill t...

Embodiment 2

[0057] Embodiment 2: as figure 2 As shown, the present invention provides a BOG processing system, the pipeline design between the liquid cargo tank 1, the daily fuel tank 30, and the gas engine 31 can realize the hierarchical correlation processing of BOG, and realize the zero discharge of BOG; it includes Liquid cargo tank 1, daily fuel tank 30 and two gas engines 31;

[0058] The air return port of the daily fuel tank 30 is connected with two parallel third pipelines 9, the air return port of the liquid cargo tank 1 is connected with a fourth pipeline 10, and each gas engine 31 is connected with a fifth pipeline 11; Two third pipelines 9 are connected to the fourth pipeline 10, and each third pipeline 9 is connected to a fifth pipeline 11, and the fourth pipeline 10 is connected to two fifth pipelines 11 Pass; between the two fifth pipelines 11 there is a sixth pipeline 12 for communicating with the two fifth pipelines 11 . Each third pipeline 9 is provided with a gas ph...

Embodiment 3

[0061] Embodiment 3: as Figure 3-4 As shown, the present invention provides a mobile LNG bunkering ship, including a hull 38, an LNG bunkering system and a BOG processing system;

[0062] The LNG filling system and BOG processing system are arranged on the hull 38, and the hull 38 on the left and right sides of the liquid cargo tank 1 is provided with a filling platform 39 and a hose crane 40, and the hose crane 40 is used to lift the filling pipeline 6 and the gas return pipeline, the cryogenic pump unit 2 is connected to the liquid cargo tank 1 and the filling pipeline to realize the transfer of LNG; the gas return pipeline is set to realize the LNG fuel of the liquid cargo tank 1 of the mobile LNG bunkering ship and the receiving ship 42 Tank 5's BOG returns gas. The first emergency break-off valve 20 and the second emergency break-off valve 26 are installed on the filling pipeline and the return air pipeline to realize the emergency break-off of the filling pipeline and ...

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Abstract

The invention discloses a LNG filling system, a BOG processing system and a mobile LNG filling ship. One end of a low-temperature pump unit is connected with a liquid filling hole of a liquefied gas tank through a first pipeline; the other end of the low-temperature pump unit is connected with one end of each filling pipeline; and the other end of each filling pipeline is connected with liquid filling holes of LNG fuel tanks of a filled ship, and the low-temperature pump set and gas return holes of all LNG fuel tanks are connected with a gas return hole of the liquefied gas tank through gas return pipelines, so that a circulating path is formed. In the BOG processing system, a third pipeline connected at a gas return hole of a daily fuel tank communicates with a fourth pipeline at the gas return hole of the liquefied gas tank; a fifth pipeline connected with a fuel gas engine communicates with the third pipeline and the fourth pipeline; and an LNG filling system and the BOG processing system are arranged on a ship body of the mobile LNG filling ship; and the tail part of the ship body is provided with full-rotating counter-rotating propellers. According to the LNG filling system, the BOG processing system and the mobile LNG filling ship disclosed by the invention, high-efficiency and high safety of LNG filling and zero release of BOG are realized.

Description

Technical field [0001] The present invention relates to the technical field of ship bunkering, and in particular to an LNG bunkering system, a BOG processing system and a mobile LNG bunkering ship. Background technique [0002] LNG refers to liquefied natural gas, and BOG is the gas that evaporates from LNG. At this stage, domestic and foreign companies are paying more and more attention to environmental protection, especially in terms of air pollution. Ship exhaust emissions are one of the main sources of air pollution. International cargo transportation is mainly carried by ships, so pollution from ships is a global concern and its impact covers a wide area. With the development of LNG (liquefied natural gas) in ship applications, LNG-powered ships are gradually increasing. However, LNG-powered ships have problems such as lack of replenishment capacity, few replenishment points, and difficulty in replenishing fuel. Therefore, the difficulty of LNG fuel replenishment has b...

Claims

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Application Information

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IPC IPC(8): F17C5/06F17C13/04F17C13/00
CPCF17C5/06F17C13/002F17C13/04F17C2201/0109F17C2201/035F17C2201/056F17C2205/0323F17C2205/0332F17C2221/033F17C2223/0161F17C2265/06
Inventor 田堃李树旺陶洋郑静萍刘建朔
Owner SHANGHAI ENN NEW ENERGY TECH CO LTD
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