Heat exchange pipe suitable for LNG open rack vaporizer

Abstract

The invention discloses a novel heat exchange pipe suitable for an LNG open rack vaporizer. The novel heat exchange pipe is the core part of the LNG open rack vaporizer and directly decides the heat exchange effect, the land occupation scale and production cost of the vaporizer. The invention belongs to the field of liquefied natural gas vaporization. Compared with a traditional fin pipe, the heatexchange pipe is characterized by comprising inner fins and outer fins, the heat exchange area is greatly increased through the outer fins, the heat exchange area is increased, the disturbance of fluid in the pipe is enhanced and the heat exchange efficiency is greatly improved through the inner fins, and compared with national existing heat exchange pipes, the heat exchange area is increased by33.0%, and the heat exchange efficiency is improved by 45.5%. Meanwhile, the heat exchange pipe is simple in structure, low in manufacturing cost and high in heat exchange efficiency, greatly reducesthe heat transfer deterioration phenomenon caused by freezing of sea water outside a middle pipe in the use process, can bear the high pressure of 12 MPa and is safe and reliable.

Description

technical field [0001] The invention relates to the field of liquefied natural gas gasification, in particular to a heat exchange tube suitable for an LNG open frame gasifier. Background technique [0002] Natural gas is a high-quality clean energy, and more and more countries have begun to pay attention to the development and utilization of natural gas resources. With the continuous development of my country's economy, the demand for energy continues to grow. In order to optimize the energy structure and reduce pollution, my country has vigorously promoted the use of natural gas. It is estimated that the proportion of natural gas in primary energy consumption will reach 10% in 2020. [0003] Half of the natural gas consumed in my country comes from imports. Therefore, my country has built a number of liquefied natural gas (LNG) receiving stations in coastal provinces, importing a large amount of LNG from overseas, and LNG needs to be gasified before entering the pipeline ne...

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Problems solved by technology

[0006] In China, there are very few manufacturers producing ORV, and the heat exchange efficiency of the heat exchange tubes is not high, resulting in problems such as large footprint of the gasifier, high cost, and limited gasification capacity

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