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Combined guiding float valve

A technology of mother valve and sub-valve, which is applied in the field of core components of the float valve tower, can solve problems such as poor effect and insufficient operating flexibility of the guided float valve tray, and achieve liquid level gradient elimination, large operating flexibility, and reduced The effect of the degree of backmixing

Inactive Publication Date: 2007-07-25
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in practice the inventor finds that the operating flexibility of the guide valve tray is not large enough. When the gas flow is large, the guide valve tray can give full play to its superiority, but when the gas flow is small, it cannot With all the float valve bonnets open, so it's not very effective

Method used

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  • Combined guiding float valve

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Embodiment 1

[0028] The ethanol-water rectification tower is Φ1200mm, with 36 trays in total, and the opening ratio is 11.5%. The original trays are all F1 type float valves. Change all the trays into the mother-child guide valve tray of the present invention. The bonnet of the mother valve is 100 mm long, the front end is 65 mm long, the rear end is 35 mm long, and the maximum width is 45 mm. The guide hole A-6 on the bonnet is tongue-shaped and 2 mm high. The front valve leg A-1 is 8 millimeters wide and 16 millimeters long, and the rear valve leg A-2 is 12 millimeters wide and 13 millimeters long. The sub-valve is a symmetrical quadrilateral floating valve, the length of the valve plate is 40mm, the front end is 45mm long, the rear end is 15mm long, and the maximum width is 20mm. The front valve leg has a width of 5mm and a length of 7mm; the rear valve leg has a width of 5mm and a length of 6mm. During the transformation, the original tray fixing parts were retained, and only the tra...

Embodiment 2

[0030] The acetic acid-water rectification system was originally an ordinary sieve tray. The equipment has been abnormal since it was put into operation. The main performance is that the production load is low, which can only reach 90% of the original design load (the original design maximum processing capacity is 250t / d), and the entrainment of fog immediately occurs when the working conditions and load fluctuate slightly , after many observations, adjustments, and repeated calculations, it is considered that the efficiency of the tray is reduced because the gas perforation speed is too high. In order to improve the production capacity of this set of equipment, the invention patent is adopted. The original rectification column is Φ1600mm, with 88 trays in total, and the opening ratio is 12%. Change all the trays into the mother-child guide valve tray of the present invention. The bonnet of the mother valve is 120 mm long, the front end is 75 mm long, the rear end is 45 mm l...

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Abstract

A combined guiding flat valve composed of a master valve and a subvalve features that its master valve has a symmetrical quadrangular valve cover with at least two valve legs, its front valve leg is longer than its back one for generating an included angle of 2-10 deg.C between valve cover and valve hole when the valve is fully opened. Said subvalve is arranged in the valve hole on the valve cover of master valve and has also at least two vavle legs. When the subvalve is fully opened, there is an included angle of 0-10 deg between the valve covers of master valve and subvalve.

Description

field of invention [0001] The invention relates to a floating valve, the core part of a floating valve tower. Background technique [0002] The inventor invented the guided valve tray and applied for a Chinese patent in 2002 (patent number CN02112748.4). Compared with the F1 valve tray, the valve plate is not easy to fall off and get stuck, the pressure drop is significantly reduced, the energy consumption is reduced, the processing capacity is increased, and the separation effect is improved. But in practice the inventor finds that the operating flexibility of the guide valve tray is not large enough. When the gas flow is large, the guide valve tray can give full play to its superiority, but when the gas flow is small, it cannot With all the float valve bonnets open, it doesn't work very well. The processing capacity of my country's oil refinery is greatly affected by the source of crude oil, so it is necessary for the fractionation tower to maintain a high separation eff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/20B01D3/16
CPCY10T137/7841Y10T137/7446B01D3/205B01D3/20B01D3/163
Inventor 张志炳梁银春周政王宝荣
Owner NANJING UNIV