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A device and method for removing liquefied natural gas mist using a coating screen

A technology of liquefied natural gas and wire mesh, applied in chemical instruments and methods, separation methods, and separation of dispersed particles, etc., can solve the problems of bulkiness and adding wire mesh, and achieve the effects of reducing volume and weight, increasing turbulence, and reducing thickness

Active Publication Date: 2015-07-29
佛山市寰晟通新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wire mesh defogging technology does not need to add power equipment, which greatly saves the investment cost and operating cost, but in order to achieve the purpose of efficient defogging, people have to increase the thickness of the wire mesh, which is relatively cumbersome; and currently the special coating wire mesh is used in LNG The gasification station has not disclosed the cold fog

Method used

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  • A device and method for removing liquefied natural gas mist using a coating screen
  • A device and method for removing liquefied natural gas mist using a coating screen
  • A device and method for removing liquefied natural gas mist using a coating screen

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Embodiment 1

[0024]In this embodiment, the liquefied natural gas mist removal device using painted wire mesh is used in a gasification station using an air-temperature gasifier, and the visibility in the station is within 10m, and the gasification scale for LNG is 96000Nm 3 / day (at 20000~100000Nm 3 / weather scale test results are basically the same), the temperature range is ‐162~‐160℃, the pressure range is 0.3~0.5MPa, the gasifier model is VQLNG‐4000 / 16C5, the wire mesh is made of stainless steel 304, the wire mesh The diameter size range is 0.0002m. The height of the screen block is 3m; the coating rate of the coating on the screen in the screen demister is 3m 2 / L; Gradually move the entire wire mesh demister from 0.5m to 0.9m from the air-temperature vaporizer, and calculate the water removal rate respectively; water removal rate = (humidity before measurement - humidity after measurement) / humidity before measurement × 100 %; Humidity before measurement and humidity after measure...

Embodiment 2

[0029] In this embodiment, the liquefied natural gas mist removal device using painted wire mesh is used in a gasification station using an air-temperature gasifier, and the visibility in the station is within 10m, and the gasification scale for LNG is 96000Nm 3 / day, the temperature range is ‐162~‐160℃, the pressure range is 0.3~0.5MPa, the gasifier model is VQLNG‐4000 / 16C5, the wire mesh is made of stainless steel 304, and the diameter of the wire mesh is 0.00015m. The height of the screen block is 6m; the coating rate of the coating on the screen in the screen demister is 4m 2 / L; Gradually move the entire wire mesh demister from 0.5m to 0.9m from the air-temperature vaporizer, and calculate the water removal rate respectively; water removal rate = (humidity before measurement - humidity after measurement) / humidity before measurement × 100 %; Humidity before measurement and humidity after measurement were measured by Elitech LT‐2 digital temperature and humidity meter. A...

Embodiment 3

[0033] In this embodiment, the liquefied natural gas mist removal device using painted wire mesh is used in a gasification station using an air-temperature gasifier, and the visibility in the station is within 10m, and the gasification scale for LNG is 96000Nm 3 / day, the temperature range is ‐162~‐160℃, the pressure range is 0.3~0.5MPa, the gasifier model is VQLNG‐4000 / 16C5, the wire mesh is made of stainless steel 304, and the diameter of the wire mesh is 0.00015m. The height of the screen block is 5m; the coating rate of the coating on the screen in the screen demister is 5m 2 / L; Gradually move the entire wire mesh demister from 0.5m to 0.9m from the air-temperature vaporizer, and calculate the water removal rate respectively; water removal rate = (humidity before measurement - humidity after measurement) / humidity before measurement × 100 %; Humidity before measurement and humidity after measurement were measured by Elitech LT‐2 digital temperature and humidity meter. A...

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Abstract

The invention discloses a device and method for removing liquefied natural gas mist by applying a coating screen mesh. The device is characterized in that a plurality of screen mesh blocks form a circumference structure with the horizontal cross section sealed at the distance 0.5 m to 0.9 m away from an air temperature type vaporizer, and the height is 3 to 9 m; each screen mesh block is formed by fixing three layers of screen mesh on a framework at intervals, and the grids of the three layers of screen mesh are rectangular meshes, wherein the second layer of screen mesh is on the outer side of the first layer of screen mesh and is 0.05 m to 0.09 m away from the first layer of screen mesh, and the grids of the second layer of screen mesh are obliquely staggered with those of the first layer of screen mesh; the third layer of screen mesh is on the outer side of the second layer of screen mesh and is 0.01 m to 0.05 m away from the second layer of screen mesh, and the grids of the third layer of screen mesh are staggered with those of the first and the second layers of screen mesh; the screen mesh is made of a metal material; coating of WPA4308 type is applied on the screen mesh. The device is high in mist removal efficiency; besides, no extra is required when the device provided by the invention is applied, so that the cost for mist removal of an LNG vaporizing station can be lowered greatly.

Description

technical field [0001] The invention relates to the technical field of liquefied natural gas mist removal, in particular to a liquefied natural gas mist removal device using a paint screen. Background technique [0002] Under the background of developing a low-carbon economy, natural gas is highly regarded and is gradually becoming the pillar of primary energy in the future world. The main component of natural gas is CH 4 , the product of combustion is CO 2 and water, which are clean energy and low-carbon fuels. Natural gas contains almost no sulfur, dust and other harmful substances. The CO emitted by natural gas during combustion 2 It is 57% of coal, 71% of oil, NO X Compared with coal and oil, the emissions are reduced by 80% and 72% respectively, and it basically does not contain sulfur, so it is an ideal clean fuel. Liquefied natural gas (LNG) is a low-temperature (-162°C) liquid mixture made from low-pollution natural gas after deacidification, dehydration, and fre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/00
Inventor 徐文东张辉许欢欢
Owner 佛山市寰晟通新能源科技有限公司
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