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A high-efficiency flash gas (bog) recondenser

A flash gas and condenser technology, applied in the field of high-efficiency flash gas (BOG) recondensers, can solve the problems of difficult control, complex equipment, low condensation efficiency, etc. Effect

Active Publication Date: 2017-03-29
江苏中圣压力容器装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to design a low energy consumption and compact structure for the existing BOG recondensation technology, which has low condensation efficiency, complex equipment, difficult control, and the process is affected by the flow and pressure of upstream and downstream LNG. Recondenser capable of fully condensing BOG

Method used

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  • A high-efficiency flash gas (bog) recondenser
  • A high-efficiency flash gas (bog) recondenser
  • A high-efficiency flash gas (bog) recondenser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as Figure 1 to Figure 4 As shown, a high-efficiency flash gas (BOG) recondenser includes a first shell 5, a second shell 14, an LNG inlet 4 located on the first shell 5, and a The tube plate 3 and the support grid 8 at both ends of the shell 5, the tube plate 3 is connected to the BOG inlet 1, and a plurality of microporous tubes 7, spacer rods 13 and spirals are arranged between the tube plate 3 and the support grid 8 Deflector 6, described spiral deflector 6 is provided with tube hole 12, tube plate 3 is provided with tube plate tube hole 15, and the surface of microporous tube 7 is provided with micropore, described microporous tube 7 and fixed The distance rod 13 passes through the tube hole 12 on the spiral deflector 6 and is fixed in parallel between the tube plate 3 and the support grid 8; one end of the second housing 14 is connected to the first housing 5 through the connecting flange 9, The other end is connected to the LNG outlet 11 , and a static mixi...

Embodiment 2

[0027] Such as Figure 6 As shown, on the basis of Example 1, the micropore diameter of the microporous tube 7 is 10 μm, and the arrangement angle between each microporous tube is 30 degrees, wherein one end of the microporous tube 7 and the tube on the tube sheet 3 The plate tube hole 15 is butted, and the other end is movably overlapped with the support grid, and the end on the side of the support grid is blocked; the microporous tube and the tube plate are connected by threads.

Embodiment 3

[0029] On the basis of Embodiment 1, the micropore diameter of the microporous tube 7 is 60 μm, and the arrangement angle between each microporous tube is 45 degrees, wherein one end of the microporous tube 7 and the tube plate hole on the tube plate 3 15, the other end is movably overlapped with the support grid, and the end on the side of the support grid is blocked; the microporous tube and the tube sheet are threaded.

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Abstract

The invention discloses a high-efficiency flash gas (BOG) recondenser, which includes a first shell, a second shell, an LNG inlet located on the first shell, and two The tube plate at the end and the support grid, the tube plate is connected to the BOG inlet, and there are multiple microporous tubes, distance rods and spiral deflectors arranged between the tube plate and the support grid, and the spiral deflector is set There are tube holes, tube plate tube holes are provided on the tube plate, and micro holes are provided on the surface of the microporous tube. Between the grids; one end of the second shell is connected to the first shell through a connecting flange, and the other end is connected to the LNG outlet, and a static mixing unit is arranged inside the second shell. Compared with the traditional BOG recondensation equipment, the present invention has high condensation efficiency, stronger processing capacity, easy operation and convenient maintenance and replacement.

Description

technical field [0001] The invention relates to a condenser, in particular to a high-efficiency flash gas (BOG) recondenser. Background technique [0002] According to the different treatment methods for liquefied natural gas (LNG) storage tank flash gas (BOG), it can be divided into direct output method and recondensation method. The direct output method is to compress the flash gas (BOG) to the external pressure and send it directly to the gas pipeline network; the recondensation method is to compress the flash gas (BOG) to a lower pressure (usually 0.7MPa), and the The LNG delivered from the LNG storage tank by the LNG low-pressure delivery pump is mixed in the condenser. Since the LNG is in a supercooled state after pressurization, the flash gas can be condensed again, and the condensed LNG is pressurized by the LNG high-pressure delivery pump, and then transported outside through gasification. The re-condensation method can utilize the cooling capacity of LNG, which r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28B3/00
Inventor 郭宏新刘世平刘丰高辉周宁波李奇
Owner 江苏中圣压力容器装备制造有限公司