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A gasification device for a dual-fuel engine lng high and low pressure gas supply system

A technology of gas supply system and gasification device, which is applied in the direction of fuel, gas fuel, pipeline system, etc., can solve the problems of difficulty in designing and building LNG-powered ships, and achieve the effect of precise control and high energy utilization rate

Active Publication Date: 2021-09-07
JIANGSU UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, dual-fuel engines are more and more widely used on ships, but the design and construction of LNG-powered ships have certain technical difficulties, mainly in the safety and reliability of the engine and fuel supply, and the management of cryogenic storage tanks, etc.

Method used

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  • A gasification device for a dual-fuel engine lng high and low pressure gas supply system

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Embodiment Construction

[0015] In order to further illustrate the technical means and work capabilities adopted by the present invention to achieve the purpose of the invention, the specific operation process, structural composition and effect of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, the gasification unit includes a high-pressure gasifier 21, a low-pressure gasifier 20, a BOG heat exchanger 5, a heater 17, a heating medium container 2, a medium delivery pump 19 for a high-pressure gasification branch, and a low-pressure gasification branch Medium delivery pump 3 of the BOG heating branch, water / ethylene glycol (heating medium) delivery pump 4 of the BOG heating branch, low-pressure buffer tanks (9, 12), high-pressure buffer tanks (25, 28), high-pressure NG heat exchanger 27, Low pressure NG heat exchanger 11.

[0017] Water / ethylene glycol 18 is used as a low-freezing-point heat-exchanging medium in ...

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Abstract

The invention provides a gasification device of a dual-fuel engine LNG high-low pressure gas supply system, including a heater, a heating medium container, a medium delivery pump, a heating medium, a heat exchanger, pipelines and an LNG delivery system; the heating medium is stored in the heating In the medium container; the heating medium container, the medium delivery pump, the heat exchanger and the heater are serially connected in series through pipelines, and the LNG in the LNG delivery system is heated by the heat exchanger before being used. The beneficial effects of the present invention are: on the one hand, the high-pressure and low-pressure gas supply pipelines control the respective LNG gasification heating more precisely; The gas temperature input to the valve group unit meets the requirements of the gas equipment, and at the same time effectively utilizes the waste heat of the cooling water of the main engine. It is a high energy efficiency and high reliability gasification unit design.

Description

technical field [0001] The invention relates to the technical field of marine power equipment, in particular to a gasification device for a high-low pressure gas supply system of a dual-fuel engine. Background technique [0002] From January 1, 2020, the International Maritime Organization (IMO) will implement stricter new emission standards for ship pollution, requiring the reduction of nitrogen, sulfur and carbon emissions. For example, it is forbidden for ships to use fuel with a sulfur content higher than 0.5%, while the sulfur content of commonly used marine fuel is 2.7%. Compared with traditional fuel oil, LNG (liquefied natural gas) is used as a new energy source in marine power, which can reduce nitrogen. Chemicals, sulfide emissions, and can solve the problem of energy crisis, reduce transportation costs. At present, dual-fuel engines are more and more widely used in ships, but the design and construction of LNG-powered ships have certain technical difficulties, ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C3/00F17C9/00F17D1/14F17D1/02F17D3/01C10L3/12
CPCC10L3/12F17C3/00F17C9/00F17C2223/0161F17C2227/0135F17C2265/06F17D1/02F17D1/14F17D3/01
Inventor 陈宁刘雁轩陈浩杨鹏
Owner JIANGSU UNIV OF SCI & TECH
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