CN2179189Y

CN2179189Y - Combined angle bar tower plate

Info

Publication number: CN2179189Y
Application number: CN 93226647
Authority: CN
Inventors: 邓修; 叶定静; 王远明; 雷坚; 马新胜
Original assignee: East China University of Science and Technology
Current assignee: East China University of Science and Technology
Priority date: 1993-11-30
Filing date: 1993-11-30
Publication date: 1994-10-12
Anticipated expiration: 2003-11-30

Abstract

The utility model discloses a combined angle iron tower plate. Upper and lower groups of angle irons are arranged on the tower plate, arranged and fixed on fixing frames on the two ends in an ordered way. The angle irons of the upper layer are also provided with a pore, which is good for the even distribution of gas, pressure drop reducing and tower plate efficiency increasing. The utility model has the advantages of reliable structure, simple fabrication, even gas distribution, small liquid backmixing, high tower plate efficiency strong processing capability, specially big operation flexibility, etc. The utility model can be extensively suitable for the gas liquid mss transfer operations of distillation, absorption and gas stripping, etc.

Description

Combined angle bar tower plate

The utility model relates to a kind of structure of core component-column plate of plate column.

As everyone knows, industrial, plate column has obtained using widely as gas-liquid two-phase mass transfer, heat-transfer equipment.Early seventies has been developed a kind of angle iron tower plate.Shortcomings such as the position of placing by angle steel can be divided into ∨ type angle iron tower plate and ∧ type angle iron tower plate, and that this class individual layer angle iron tower plate has is simple in structure, resistance drop is little and efficient advantages of higher relatively, carries under one's arms greatly but exist mist, and operating flexibility is little.Afterwards, occurred the float type angle iron tower plate again, although make moderate progress on operating flexibility, angle steel fluctuates and has brought complex structure, easy to wear coming off, and the mist big shortcoming of carrying under one's arms still exists, and is further improved.

The purpose of this utility model is to overcome the shortcoming of above-mentioned all kinds of angle iron tower plates, has designed a kind of combined type angle iron tower plate, has reliable in structure, make simply, distribution of gas is even, and operating flexibility is big, advantages such as pressure drop is little, thus the operating characteristics and the mass-transfer efficiency of angle steel plate column further improved.

Design of the present utility model is such:

1, combined type angle steel structure is set on column plate, the upper strata is a ∧ type angle steel.Lower floor is a ∨ type angle steel, the alternate cross lamination of two-layer angle steel is arranged, thereby make gas passage vertically become the gas passage that angle steel constituted of gas by cross lamination from bottom to top and be the W type by liquid level by common, gas imports from W type middle crest point slit (gas passage inlet), bifurcated flows out again, thereby has reduced gas kinetic energy component in vertical direction, reduces entrainment; Simultaneously, because the change of gas flow, mass transfer has been strengthened in the turbulent extent aggravation when making the gas-liquid contact.

2, on two arms of angle of upper strata ∧ type angle steel, have aperture, be intended to improve the uniform property of gas, gas-liquid two-phase is contacted more equably, further improve mass-transfer efficiency, also reduce the pressure drop of column plate simultaneously effectively, improve the operating flexibility of tower.

3, two-layer up and down angle steel all is orderly bar shaped arrangement, and the length direction of angle steel and the liquid flow path direction on the column plate are consistent, thereby have reduced the liquid dispersion on the column plate, help improving mass-transfer efficiency.

4, two-layer up and down angle steel adopts stationary structure, can overcome because movable structure brings shortcomings such as mechanical wear, makes simple and reliable for structure.

According to above-mentioned design, the inventor has designed and produced a kind of combined type angle iron tower plate, illustrates design feature of the present utility model below in conjunction with accompanying drawing;

The said combined type angle iron tower plate structural plan figure of Fig. 1 the utility model.

Fig. 2 is combination angle iron tower plate A-A cross-section side view.

Fig. 3 is the enlarged drawing of node B.

Fig. 4 is for having the schematic diagram of aperture on angle steel two arms of angle on the ∧ type.

Fig. 5 cuts open front view for fixed mount sub-assembly office.

Fig. 6 is a fixed mount sub-assembly C-C sectional view.

Wherein,

Angle steel on the 1-∧ type (angle steel on the abbreviation).

Angle steel under the 2-∨ type (being called for short angle steel down).

3-fixed mount (sub-assembly);

The fixing angle bar of going up of 3a-, it has ∧ shape mouth on one side;

The fixing angle bar down of 3b-, it has ∨ shape mouth on one side;

The 3c-drain hole;

3d-spacing set bolt;

The 3e-back side panel;

The 3f-wing plate;

The 3g-side plate

The 4-housing.

The 5-column plate.

The 6-overfall;

The 6a-downflow weir;

The 6b-downspout.

S-gas passage throat width.

The width of upper and lower angle steel two arms of angle of b-.

A=1/2 b, when on last angle steel two arms of angle during perforate, it is the position of first row's aperture.

When opening two row's apertures, second row's aperture is positioned at 3/4 b place.

δ-be the thickness of the arm of angle of upper and lower angle steel.

T-is the channel width that forms after the upper and lower angle steel cross lamination, and its size system regulates by the spacing set bolt.

The aperture that has on angle steel two arms of angle on the d-∧ type, it is along the uniform arrangement of length direction of angle steel on the ∧ type, and when having the above aperture of a row, then row's aperture is arranged the cross arrangement that becomes to walk abreast between aperture with another.

By Fig. 1-6 as seen:

The said combined type angle iron tower plate of the utility model, mainly by column plate, tower tray, downflow weir, downspout etc. in addition parts assemble, it is characterized in that said tower tray by angle steel (2) under angle steel (1) on one group of ∧ type and the one group of ∨ type mutually cross lamination form.The two ends of upper and lower angle steel fixing respectively (welding) on angle bar (3a) and the fixing down ∨ shape mouth that angle bar (3b) has, form respectively and go up angle steel sub-assembly and following angle steel sub-assembly on fixing.During installation, following angle steel sub-assembly burn-on side plate (3g), back side panel (3e), with wing plate (3f) after, by being bolted on the column plate (5); Last angle steel sub-assembly then is positioned on the fixing angle bar (3b) down by spacing set bolt (3d) is affixed.

The channel width t that the width of gas passage inlet S and the superimposed back of upper and lower angle steel form should choose in 1～5mm scope.

The arm of angle width b of upper and lower angle steel should choose in the 20-50mm scope, and the thickness δ of the upper and lower angle steel arm of angle should get 1～3mm, and the angle α of upper and lower angle steel two arms of angle should choose in 45～90 ° of scopes, but the two must equate, should preferentially select α=60 ° for use.

Have aperture (d) on the ∧ type on two arms of angle of angle steel, it helps even gas distribution, reduces pressure drop and improves plate efficiency.The diameter of aperture (d) should be got 1～3mm, the uniform requirement of how much depending on gas of its percent opening.

Have one or more drain hole (3c) on one arm of angle of fixing angle bar (3b) down, its diameter can be chosen in 3～6mm scope, after the purpose that drain hole is set is that operation stops, makes and amasss under the ∨ type liquid in the angle steel groove and get rid of by drain hole.

Liquid flow path direction when length direction that upper and lower angle steel is arranged and tower plate operation is consistent, and can reduce the back-mixing of liquid on column plate.

The height of downflow weir (6a) depends on the designing requirement of tower, usually desirable 20～50mm.

According to the combined type angle iron tower plate experimental provision that above-mentioned design is made, air-water on probation and air-contain CO ²Water carried out test of structure attribute testing, hydrodynamics and mass transfer tests, the result shows that this device has following remarkable advantage:

1, reliable in structure, bolt are repaiied easily, do not have wearing and tearing, can not come off.

2, after gas moved towards to change, entrainment significantly reduced.

3, the liquid dispersion on the column plate significantly reduces.

4, under the condition of same percent opening, compare with sieve tray, mass-transfer efficiency can improve more than 10%.

5, have under the condition of same percent opening, compare with sieve tray, pressure drop has obvious reduction; As kinetic energy factor F ₃When 1.70 left and right sides, the pressure drop of combined type angle iron tower plate only is 50% of a sieve tray.

6, operating flexibility is big, can be widely used in distillation, absorption, gas and the gas-liquid mass transfer operation such as propose.

Claims

1, a kind of combined type angle iron tower plate mainly assembles of the present utility model being characterised in that by all parts in addition of column plate, tower tray, downflow weir, downspout: said tower tray is to be formed by the mutual cross lamination of angle steel under angle steel on one group of ∧ type and the one group of ∨ type.

2,, it is characterized in that on the ∧ type on the column plate that the angle of angle steel two arms of angle is 45～90 ° under the angle steel and ∨ type as the said angle iron tower plate of claim 1.

3,, it is characterized in that on the ∧ type on the column plate that the angle of angle steel two arms of angle is 60 ° under the angle steel and ∨ type as the said angle iron tower plate of claim 1.

4, as the angle iron tower plate of one of claim 1-3, it is characterized in that perforate has aperture (d) on two arms of angle of angle steel on the ∧ type, the diameter of aperture (d) is preferably 1～3mm.

5, as the angle iron tower plate of one of claim 1-4, the liquid flow path direction when it is characterized in that on the ∧ type on the column plate length direction of the arrangement of angle steel and tower plate operation under the angle steel and ∨ type is consistent.