CN2589035Y

CN2589035Y - Float valve and tongue hole combined tray

Info

Publication number: CN2589035Y
Application number: CN 02294683
Authority: CN
Inventors: 潘国昌
Original assignee: Beijing Zehua Chemical Engineering Co ltd
Current assignee: Beijing Zehua Chemical Engineering Co ltd
Priority date: 2002-12-30
Filing date: 2002-12-30
Publication date: 2003-12-03
Anticipated expiration: 2012-12-30

Abstract

The utility model relates to a float valve and tongue hole combined column tray, which relates to a device which is used for processes of distillation and absorption in oil refining and chemical industry. The main technical feature of the utility model is that a column tray which is arranged between two adjacent circular float valves is upwards punched with a row of tongue holes or notches which are provided with tongue pieces; the jetting direction of each row of tongue holes or notches is consistent, wherein, the jetting direction of each row of tongue holes or notches is perpendicular to the flowing direction of liquid, and the jetting direction two adjacent rows of tongue holes or notches are contrary or the jetting direction of a plurality of rows of tongue holes or notches is the same with the flowing direction of the liquid. Compared with the existing float valve column tray, the opening ratio of the column tray is enlarged, the speed, the voltage drop and the entrainment of valve holes are reduced, the stay time of the liquid on the column tray is extended, the exchange and the mixture of the liquid in the direction which is perpendicular to the flowing direction of the liquid, stagnation regions arranged on both sides of the column tray are eliminated, the height of a foam layer is dropped, and therefore, the efficiency and the productivity of the column tray is effectively raised.

Description

Float valve-tongue hole combined tray

Technical field

The utility model relates to a kind of equipment that is used for oil, chemical industry distillation, absorption process, the structural design of particularly a kind of float valve-tongue hole combined tray.

Background technology

Tower tray is the visual plant that separates homogeneous mixture, and its performance plays great influence to the output of products of separated, quality, energy consumption, cost etc.In existing tower tray technology, circular float valve (float valve that comprises traditional F1 type float valve and valve face band tongue hole) has obtained to use the most widely, but have following defective: it is in working order the time, gas under the type valve block of garden in horizontal direction to around spray, the air-flow of adjacent each valve ejection liquidates mutually, not only aggravates Wu Droplets and carries secretly, and brought radially back-mixing of liquid phase, arc area on this external column plate forms and refluxes and stagnant areas, as shown in Figure 2.These all make permissible load and plate efficiency restricted greatly, requirement such as therefore, this kind tower tray can not satisfy domestic expansion output, improve the quality.

The utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of float valve-tongue hole combined tray, with the last limited load and the tray efficiency of further raising tower tray.

Scheme of the present utility model is as follows: a kind of float valve-tongue hole combined tray, mainly comprise column plate, be arranged on the circular float valve of many rows, inlet weir and downspout on the column plate, it is characterized in that: on the column plate between the circular float valve of every adjacent two rows, all upwards go out a row tongue hole or an otch, tongue piece is arranged on it, the injection direction unanimity of every row's tongue hole or otch, the injection direction of wherein respectively arranging tongue hole or otch is vertical with liquid flow direction, and the injection direction of adjacent two row tongue holes or otch is opposite; Perhaps wherein there is the injection direction of plurality of rows tongue hole or otch identical with liquid flow direction.

Tongue piece described in the utility model is the half garden shape of width 10～25mm, and the tongue piece height h that upwards goes out is 2～8mm. The tongue piece of perhaps upwards going out is made up of tilting section and horizontal segment, and described horizontal segment tongue piece is semicircle, and its tongue piece width is 10～25mm, and tongue piece height h is 2～8mm.

Three of described otch link to each other with column plate, and the otch section is curved or trapezoidal, and its width is 10～25mm, and height h is 2～8mm.

Float valve provided by the utility model-ligulate tongue hole composite plate compared with prior art, has the following advantages and technological progress:

1. enlarged open ratio of plate, reduced valve opening speed, pressure drop Ji Wu Droplets carries secretly.

2. the side direction in tongue hole is sprayed, and makes that liquid layer is tending towards evenly having reduced foam layer height on the tower tray, and reduced mist Droplets and carried secretly, thus the last limited load of raising tower tray.

3. the side direction in tongue hole is sprayed, and has prolonged the time of staying of liquid on column plate, thereby improves the efficient of column plate.

4. the side direction in tongue hole is sprayed, and has strengthened exchange and mixing perpendicular to the liquid on the liquid flow direction, has eliminated the stagnant wake of column plate both sides, makes the concentration homogeneous perpendicular to the liquid flow path direction, thereby has improved plate efficiency.

Description of drawings

Fig. 1 is the structural representation of the F1 float valve of conventional art.

Fig. 2 is the liquid flow point Butut on the F1 float valve tray.

The float valve that Fig. 3 provides for the utility model-tongue hole combined tray floor map.

Fig. 4, Fig. 5 are the stereogram in tongue hole, respectively the structure in two kinds of different tongues holes upwards going out of expression.

Fig. 6 is the stereogram of the otch upwards gone out.

Fig. 7 is the macroscopical liquid flow point Butut on the combined tray of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples the structure of the present utility model and the course of work are further described.

Fig. 3 is the plane of float valve-tongue hole combined tray, and described combined tray mainly is included in column plate 32, downspout 33, the inlet weir (bubbling promoters) 35 that levels are installed in the tower shell 31 and is arranged on many rows float valve 37 on the column plate.The liquid of a last column plate flows into liquid receiving area 34, flows into bubbling area 36 through inlet weir 35.First row is tongue hole or otch 38 for tongue hole or otch 38, the three rows for float valve 37, the four rows for float valve 37, the second row in the bubbling area, but that its injection direction and second is arranged is opposite, and all the other are analogized in proper order.Do not point to the guidance quality of downspout direction as float valve, then can in bubbling area, arrange plurality of rows tongue hole identical or otch 310, to overcome the gradient of liquid level on the column plate and to lower foam layer height with the liquid flow path direction.

Fig. 4, Fig. 5, Fig. 6 are respectively the solid figure of tongue hole and otch.Tongue hole 41 among Fig. 4 is that column plate is upwards gone out half garden shape tongue piece 41, and the height h of the tip of the tongue is 2-8mm: the tongue hole 52 among Fig. 5 also is half garden shape, and its tongue piece has a horizontal segment 51, and its tip of the tongue height h is 2-8mm.

Fig. 6 upwards goes out projection 61 with column plate, and its three link to each other with column plate, and one side forms otch 62, and the otch section is curved or trapezoidal, and its width is 10～25mm, and height h is 2～8mm.

Embodiment:

In the experiment tower of diameter 1.2m, three blocks of column plates are housed, lower floor is a gas distribution grid, the middle level is a breadboard, the upper strata is the liquid foam entrainment collecting board, on column plate, adopt the nicked float valve of valve face, the performance of having tested this kind float valve-tongue hole combined tray and F1 float valve tray respectively, its technical parameter is as follows:

The wide 200mm of chord downcomer accounts for tower section 11%;

The long 890mm of exit weir, height of weir 50mm;

Air velocity 8～3.6m/s;

Discharge 0.8～112m/h;

Float valve-used tongue the hole width of tongue hole combined tray 15mm, tongue hole height 4mm.

Two kinds of tower trays are carried out contrast test under similarity condition, measured its liquid foam entrainment rate, pressure drop and oxygen desorb plate efficiency.

The contrast test data are: the liquid foam entrainment of float valve-tongue hole combined tray reduces more than 1 times than F1, upper limit stressor C _b(promptly representing the production capacity of tower tray) improved 26%, and pressure drop has descended 29%, and efficient has on average improved 24%.

Claims

1. float valve-tongue hole combined tray, mainly comprise column plate (32), be arranged on the circular float valve of many rows (37), inlet weir (35) and downspout (33) on the column plate, it is characterized in that: on the column plate between the circular float valve of every adjacent two rows, all upwards go out a row tongue hole or an otch, tongue piece is arranged on it, the injection direction unanimity of every row's tongue hole or otch, the injection direction of wherein respectively arranging tongue hole or otch is vertical with liquid flow direction, and the injection direction of adjacent two row tongue holes or otch is opposite; Perhaps wherein there is the injection direction of plurality of rows tongue hole or otch identical with liquid flow direction.

2. according to the described float valve of claim 1-tongue hole combined tray, it is characterized in that: described tongue piece is the half garden shape of width 10～25mm, and the tongue piece height h that upwards goes out is 2～8mm.

3. according to the described float valve of claim 1-tongue hole combined tray, it is characterized in that: the tongue piece of upwards going out is made up of tilting section and horizontal segment, and described horizontal segment tongue piece is semicircle, and its tongue piece width is 10～25mm, and tongue piece h highly is 2～8mm.

4. according to the described float valve of claim 1-tongue hole combined tray, it is characterized in that: three of described otch link to each other with column plate, and the otch section is curved or trapezoidal, and its width is 10～25mm, and height h is 2～8mm.