CN201067642Y

CN201067642Y - Circular bench shape state stereoscopic mass transfer tower plate bubble cap

Info

Publication number: CN201067642Y
Application number: CNU2007200803496U
Authority: CN
Inventors: 孙文辉
Original assignee: WANG DEPING SUN WENHUI
Current assignee: WANG DEPING SUN WENHUI
Priority date: 2007-07-19
Filing date: 2007-07-19
Publication date: 2008-06-04
Anticipated expiration: 2017-07-19

Abstract

The utility model provides a truncated cone injection solid mass transfer column tray bubble cap, relating to tower internal part unit fittings used for oil refining, petrochemical industry, fine chemicals, foods and environmental protection, in particular to a truncated cone bubble cap. The utility model comprises a bubble cap body, an external top cover, and a column tray body; the cross-section of the bubble cap body is gradually diminished from bottom to top; a half at the edge of the bottom of the bubble cap body is slightly higher than the other half. The gas kinetic energy factor is always in reinforcing process, thus leading the gas flux surface to be more uniform and the mass transfer effect to be obviously improved.

Description

A kind of truncated cone-shaped is sprayed attitude combined trapezoid spray tray bubble-cap

Technical field

The utility model relates to the used tower internals of oil refining, petrochemical industry, fine chemistry industry, food and environmental protection unit accessory, particularly relates to a kind of bubble-cap.

Background technology

The tower of mass transfer, heat transfer is for one of important requirement of tower internals, to provide sufficient boundary to come guaranteed efficiency exactly, providing boundary for plate column is to rely on the kinetic energy of spent gas and produce, its control variables is a hole kinetic energy factor, higher hole kinetic energy factor can provide sufficient boundary for gas-liquid mass transfer, heat transfer, controls finally to limit as height with mist entrainment in design; Novel vertical sieve tray column plate is exactly that gas passes through column plate with bigger orifice plate KE factor, liquid on the column plate is brought in the bubble-cap by crack, the end, liquid enters the interior back of cover along with gas rises, liquid is decentralized photo and gas to carry out Continuous Contact and leaves bubble-cap up to gas and enter between column plate, owing to increased many in plate spacing covers, gas kinetic energy factor reduces greatly, can realize gas-liquid separation preferably again, entrainment is effectively controlled, because high gas speed, the interior gas-liquid of cover is sprays and the stream contact, so mass-and heat-transfer efficient height, low gas velocity is realized better gas-liquid separation between bubble-cap, and these special structures make the New VST plate become the column plate of the excellent performance of wideling popularize at present; But its cover inner area passage is etc. big; Liquid enters in the cover along with after gas rises, and the KE factor of gas can weaken, and the kinetic energy height then determines mass transfer, heat transfer efficiency height, and mass transfer, the heat transfer efficiency of big vertical sieve plate column such as bubble-cap internal diameter are reduced.In addition, liquid flows through column plate and blister implement can produce traction on the column plate, and this traction can make tower plate surface produce liquid level drop, and liquid level missionary society makes gas pass through the column plate hole to produce uneven distribution, thereby influences gas-liquid mass transfer, heat transfer efficiency.

Summary of the invention

The utility model provides a kind of simple in structure just in order to solve above technical problem, and gas kinetic energy factor continues all the time to strengthen, can better change the column plate liquid level drop, is beneficial to the novel truncated cone-shaped injection attitude combined trapezoid spray tray bubble-cap that gas-liquid fully contacts.

The utility model is achieved in that and sprays attitude combined trapezoid spray tray bubble-cap, comprises bubble-cap body 1, band outer top cover 2, column plate 4, and it is characterized in that: cross section progressively diminishes from the bottom to top in the bubble-cap body 1, and half of bubble-cap body 1 bottom margin is a little more than second half.Bubble-cap body 1 top offers a plurality of apertures 5, and outer top cover 2 can be flat shape outer top cover or taper outer top cover.

Adopt the truncated cone-shaped structure, the cover inner area from bottom to top progressively reduces, and according to the venturi phenomenon, makes gas-liquid enter the interior back of cover gas flow rate and accelerates, and gas kinetic energy factor is increased, and the gas-liquid mass transfer interface increases, thus the raising mass-transfer efficiency; When circular structure made gas make progress the liquid membrane in the cover body bottom, liquid was stressed evenly, helped liquid film and rose, and was the structure of circular arc in the cover, did not have the stagnant area, made the Liquid Flow resistance little, further helped the raising of mass-transfer efficiency.

Half of bubble-cap body bottom margin is a little more than second half, just the bubble-cap bottom is simultaneously shorter than exit weir near the cover body height of the one side of inlet weir, the crack, the end that is truncated cone-shaped bubble-cap and column plate makes a close mouthful weir be greater than the exit weir one side on one side all the time, the high one side fluid passage of tower plate surface liquid level is increased, make under drag force situation on the equal gas, because passage enlarges relatively, therefore it is some more that liquid measure promotes the one side littler than passage, thereby effectively eliminated plate face liquid level drop, improved mass-transfer efficiency.

Truncated cone-shaped is sprayed attitude combined trapezoid spray tray bubble-cap and is installed on mass transfer, the heat transfer tower column plate, and gas moves upward from the tower bottom, and liquid flows to the bottom from cat head, and both are fully contact in truncated cone-shaped is sprayed attitude combined trapezoid spray tray bubble-cap.Interior diameter from bottom to top progressively diminishes because truncated cone-shaped is sprayed attitude combined trapezoid spray tray bubble-cap, gas in bubble-cap upwards movement velocity can not weaken, can strengthen on the contrary.Bubble-cap body bottom is poor with column plate formation slit, and the slit of liquid upstream helps liquid and enters in the bubble-cap body greater than the slit in liquid downstream.

Technique effect of the present utility model and advantage are:

1, the not descending change of section of circular platform type cover body inner area, gas kinetic energy factor is in the process of keeping reinforcement all the time, and mass transfer effect is significantly improved.

2, by the crack, the end of inlet weir greater than by crack at the bottom of the exit weir, the fluid passage on the high one side of tower plate surface liquid level is increased, make under drag force situation on the equal gas, because passage enlarges relatively, therefore the one side that the liquid measure lifting capacity is littler than passage is some more, can effectively overcome plate face liquid level difference, make gas communication plate face more even, can fully ensure mass-transfer efficiency.

3, the cover body at formation mass transfer interface is the structure of circular arc, does not have the stagnant area, and flow resistance is little.

4, column plate opened round hole and evolution shape boring ratio make the mechanical stability of column plate higher

5, the cap structure of band outer makes gas-liquid separation more thorough, and mist entrainment reduces.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 is a perspective view of the present utility model

Fig. 3 is the structural representation of the utility model in tower

Wherein, 1---truncated cone-shaped bubble-cap body, 2---band outer top cover, 3---angle steel,

4---column plate, 5---sieve aperture, 6---inlet weir, 7---exit weirs

The specific embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, the utility model is further specified, one steel plate is processed into sector ring board, half limit of the big arc of sector ring board is than second half short point, little arc tips is bored sieve aperture 5, this sector ring board that has bored sieve aperture 5 is rolled into truncated cone-shaped, and side seam welded, become truncated cone-shaped bubble-

cap body

1,3 angle steel 3 of top cover 2 usefulness of band outer are welded on truncated cone-shaped bubble-cap body upper end (being welded on the little arc end of truncated cone-shaped bubble-cap), then the truncated cone-shaped unit mass transfer bubble-cap body that processes is welded on the column plate, forms truncated cone-shaped and spray attitude combined trapezoid spray tray bubble-cap.

The slit that described bubble-cap body lower end and column plate plate body form is greater than exit weir 7 one sides by inlet weir 6 one sides.

Gas is entered in the truncated cone-shaped bubble-cap with the kinetic energy factor by the column plate hole, (truncated cone-shaped bubble-cap by support angle steel and column plate formation) enters in the truncated cone-shaped bubble-cap liquid on the column plate from the slit, because the slit that enters in the bubble-cap is different, what plate face liquid level was high has a latasuture crack big, the latasuture crack that plate face liquid level is low is little, thereby regulated plate face liquid level, made the gas pore of flowing through more even; Liquid enter in the bubble-cap by gas hold, membrane, the broken rising, in this process because the undergauge structure of truncated cone-shaped makes gas kinetic energy factor constantly keep reinforcement, thereby gas-liquid mass transfer better effects if; Gas-liquid mixture and top blind flange collision when rising to top cover, part is turned back and the gas-liquid mixture that rises collides mass transfer again; Part ejects the bubble-cap body through the gap of top sieve aperture and outer top cover and bubble-cap formation, carries out mass transfer between the unit bubble cover body.

Claims

1. a truncated cone-shaped is sprayed attitude combined trapezoid spray tray bubble-cap, comprises bubble-cap body (1), band outer top cover (2), column plate (4), and it is characterized in that: bubble-cap body (1) cross section progressively diminishes from the bottom to top, and half of bubble-cap body (1) bottom margin is a little more than second half.

2. injection attitude combined trapezoid spray tray bubble-cap according to claim 1 is characterized in that: described bubble-cap body (1) top offers a plurality of sieve apertures (5).

3. injection attitude combined trapezoid spray tray bubble-cap according to claim 1 and 2 is characterized in that: band outer top cover (2) is a planar shaped.

4. injection attitude combined trapezoid spray tray bubble-cap according to claim 1 and 2 is characterized in that: band outer top cover (2) is taper.