CN2305236Y

CN2305236Y - Spray float valve tower plate

Info

Publication number: CN2305236Y
Application number: CN 97225557
Authority: CN
Inventors: 陆昌林
Original assignee: Sino-Foreign Joint Venture Luoyang Ruichang Petroelum-Chemical Equipment Co Lt
Current assignee: Sino-Foreign Joint Venture Luoyang Ruichang Petroelum-Chemical Equipment Co Lt
Priority date: 1997-09-02
Filing date: 1997-09-02
Publication date: 1999-01-27
Anticipated expiration: 2007-09-02

Abstract

The utility model discloses a spray valve tray. A spray guiding tongue hole is arranged on a valve leg on one end of a float valve, and a tongue-shaped rectifying cap which guides the flow of gas phase is arranged above the tongue hole. The direction of the spray guiding tongue hole points to the flow direction of main liquid, and namely, the direction of the spray guiding tongue hole points to the direction of a downcomer. Because gas blown by the spray guiding tongue hole can push the liquid to farthest flow, the hydromechanics performance of the spray valve tray is improved, processing capacity and efficiency of the spray valve tray is improved, and pressure drop and the gradient of liquid level are reduced. The utility model is suitable for various mass transfer separating towers for gas and liquid in the oil refining industry, in the chemical industry, in the petrochemical industry, in the light industry, etc.

Description

A kind of injection float valve tray

The utility model relates to a kind of injection float valve tray, belongs to the internals in the plate column, is a kind of novel column plate that is widely used in the various gas-liquid mass transfer knockout towers of industry such as oil refining, chemical industry, petrochemical industry and light industry.International Patent classificating number is B01D3/18.

Current, the column plate pattern that is most widely used is a valve plate, and used float valve mainly is circular (F1 type float valve) and rectangular valve.For circular valve plate, because gas phase blows out along 360 ° of directions all around of valve, not only there is gas-liquid between valve and the valve phenomenon that liquidates, and the blow-off direction of some gas phase is opposite with the liquid flow path direction, hinder flowing of liquid phase, thereby cause gradient of liquid level and pressure drop to increase, plate efficiency and disposal ability descend.Simultaneously and since when operation circular float valve rotation phenomenon, valve leg serious wear causes float valve obscission ubiquity, thereby makes the column plate can not normal running.For the rectangular valve column plate, though there is not the float valve obscission, because gas phase only blows out along two side directions of valve, there be not the injection guiding flow phenomenon of gas phase to liquid, also will cause gradient of liquid level and pressure drop bigger than normal, gas-liquid phase bias current, disposal ability and decrease in efficiency.Occurred guide float valve tray in recent years, this float valve is to offer pilot hole on the valve block of rectangular valve, and the gas that sprays from this pilot hole has certain impetus to liquid.But because the gas that sprays from this hole also has component velocity vertically upward simultaneously, cause entrainment to increase, plate efficiency descends.

In order to overcome the These characteristics of existing valve plate, the utility model has designed a kind of injection float valve tray, and it is good to have the guide effect of injection, column plate disposal ability and efficient height, the advantage that pressure drop and gradient of liquid level are little.

The purpose of this utility model provides a kind of injection float valve tray.

The purpose of this utility model is achieved in that

A kind of injection float valve tray is characterized in that the valve leg of float valve one end is provided with injection guiding tongue hole, and the top in tongue hole is provided with the ligulate rectification cap that the guiding gas phase flows, and sprays the tongue hole of leading and points to main liquid flow path direction, promptly points to the downspout direction.Float valve and valve opening can be rectangle, square, trapezoidal or oval.The shape of spraying guiding tongue hole and ligulate rectification cap can be semicircle, ellipse, rectangle, square or triangle.

Advantage of the present utility model: improved the hydrodynamics and the mass-transfer performance of column plate, compared with the rectangular valve column plate with circular, column plate disposal ability and efficient height, pressure drop and gradient of liquid level are little, and mist entrainment and leakage rate are low.That the utility model also has is simple in structure, be easy to make machining characteristics.

Description of drawings:

Fig. 1 is the principal section figure of the utility model injection float valve tray.

Fig. 2 is the vertical view of the utility model injection float valve tray.

Fig. 3 is the schematic perspective view of the utility model injection float valve tray.

Fig. 4 is the embodiment schematic diagram of the utility model injection float valve tray.

The direction of arrow is main liquid flow path direction among the figure, and 1 is column plate, and 2 is end points, and 3 is ligulate rectification cap, and 4 is float valve, and 5 is valve opening, 6 is the valve leg, and 7 is the valve foot, and 8 is the ligulate pilot hole, and 9 is the valve leg, and 10 is the valve foot, 11 is the valve waist, and 12 are the experiment tower, and 13 for falling the stream pipe, and 14 is seal pot, and 15 is downflow weir.

The utility model is described in further detail with embodiment below in conjunction with accompanying drawing.

Injection float valve tray is to be made of column plate 1 and float valve 4, is evenly equipped with valve opening 5 on the column plate, and float valve 4 has valve leg 6, valve leg 9, ligulate rectification cap 3 and sprays pilot hole 8 and form.When closing, float valve 4 can cover valve opening 8, and the end points 2 of ligulate rectification cap 3 contacts with the upper surface holding point of column plate 1, and two waists 11 of float valve 4 have a minimum aperture with the upper surface of column plate 1 like this, with prevent float valve 4 and column plate 1 kill with become rusty dead.Along with the increase of tolerance, the part float valve will float, and

valve foot

7 and 10 liters that will limit float valve 4 open height, so that make float valve keep certain aperture during normal running.Offer one on the valve leg 9 and spray guiding tongue hole 8, the air-flow that blows out from this hole will promote liquid flow.The effect of ligulate rectification cap 3 is gas rectification in addition, the restrictions to blowing out, so that the gas along continuous straight runs is flowed, strengthen the guiding mobilization, reduce the gradient of liquid level of column plate, make the air-flow that blows out can not produce entrainment simultaneously, and then make column plate have the high processing ability.

Valve opening 5 in the utility model and float valve 4 can be rectangle, square, trapezoidal or oval, and its length is 40-200mm, and the valve width is 20-60mm.

Embodiment: in certain Φ 800 experiment tower 12, injection float valve tray 1 of the present utility model is installed, downspout 13 and seal pot 14, downspout area/tower section amasss=10.0%, and height of weir is 50mm, arranges and sprays 25 of float valves, and air--water is tested in employing.

The data such as pressure drop, leakage, entrainment, efficient, gradient of liquid level of this utility model and F1 type float valve under equal experiment condition, have been tested respectively.

Test result shows: under normal operating condition, the utility model column plate is than the low 280Pa of the pressure drop of F1 type float valve, and leakage rate reduces by 49.3%, entrainment reduces by 38.6%, efficient improves 13.8%, and gradient of liquid level reduces by 86.2%, simultaneously the also corresponding raising of operating flexibility.

Claims

1, a kind of injection float valve tray, it is characterized in that: the valve leg (9) of float valve (4) one ends is provided with and sprays guiding tongue hole (8), the top in tongue hole (8) is provided with the ligulate rectification cap (3) that the guiding gas phase flows, and sprays guiding tongue hole (8) and points to main liquid flow path direction, promptly points to downspout (13) direction.

2, injection float valve tray according to claim 1 is characterized in that float valve (4) can be rectangle, square, trapezoidal or oval.

3, injection float valve tray according to claim 1 is characterized in that the shape of spraying guiding tongue hole (8) and ligulate rectification cap (3) can be semicircle, ellipse, rectangle, square or triangle.