Seawater distribution system of open rack vaporizer

Abstract

The invention discloses a seawater distribution system of an open rack vaporizer. The system comprises a seawater distribution pipeline, and further comprises a buffer area, distribution areas and overflow areas; the distribution areas are positioned on two sides of the buffer area; the overflow areas are positioned on the outer sides of the length directions of the buffer area and the distribution areas, and are communicated with the two through water passing ports in the lower parts; and after seawater enters the buffer area from the seawater distribution pipeline at the bottom out of the buffer area, the seawater is guided and buffered by a buffer device in the buffer area to move in the horizontal direction to enter the distribution areas and to enter the overflow areas through the water passing ports in the lower parts to be guided out. The system effectively increases the seawater resistance fall, reduces the seawater flowing speed, prevents strong turbulence or acute fluctuation of the seawater in the overflow areas, guarantees stable and uniform distribution of the seawater in the area, and guides the seawater to the inclined lower side through an overflow weir arc to naturally, uniformly and fully overflow onto the surface of a pipe bundle heat exchange panel of the open rack vaporizer to form an effective seawater liquid film.

Description

technical field [0001] The invention relates to the technical field of liquefied natural gas gasification, in particular to an open-frame gasifier seawater distribution system. Background technique [0002] In large-scale LNG receiving stations, in order to meet the demand for use, LNG (-162°C) must be gasified first and then exported to downstream users. The vaporizer is a heat exchange device specially used for the gasification of liquefied natural gas. It is one of the key equipment to ensure the function of the receiving station and determines the gasification output capacity of the receiving station. The open-frame gasifier is the most commonly used base-load gasifier in receiving stations, which uses seawater to exchange heat with liquefied natural gas in heat exchange tubes. [0003] A seawater distribution system is installed on the top of the heat exchange module of the open-frame gasifier. The function of the seawater distribution system is to evenly overflow the...

AI Technical Summary

Problems solved by technology

[0005] (1) The structure is complex, there are many parts, and the manufacturing and assembly require high precision and difficulty;

[0006] (2) The structure is complex, and the operation and maintenance process is inconvenient;

[0007] (3) The existing structure does not have the effect of increasing the resistance drop of seawater, and the average distribution of seawater is not effective, especially when the seawater flow is large

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