CN2475447Y

CN2475447Y - Guide spray column plate

Info

Publication number: CN2475447Y
Application number: CN 01221920
Authority: CN
Inventors: 刘继东; 李春利; 刘景华; 张文林; 李柏春; 宋志英; 朱令之; 于文奎
Original assignee: Hebei University of Technology
Current assignee: Hebei University of Technology; Hebei Polytechnic University
Priority date: 2001-04-26
Filing date: 2001-04-26
Publication date: 2002-02-06
Anticipated expiration: 2011-04-26

Abstract

The utility model relates to a guide jet tray which is characterized in that a guide jet separating plate is arranged on the top of the jet cover. The separating plate can be a flat plate or an arc plate. The horizontal contained angle of the separating plate and the jet cover is 0 DEG to 45 DEG when the separating plates are arranged at the same height while the horizontal contained angle is -45 DEG to 45 DEG when the separating plates are arranged at a different height. Compared with the vertical sieve tray, the processing ability of the utility model is improved 60% to 100%; the tray pressure drop is reduced 20% to 30%; the back-mixing of liquid phase on tray is decreased 50% to 100%; the vapor entrainment is reduced 100% to 200%. The utility model is suitable for any mass transfer and heat-transfer tray column.

Description

The Guide spray column plate

The utility model belongs to the column plate in mass transfer in a kind of chemical industry, the heat transfer plate column, particularly a kind of Guide spray column plate.

In the past, employed column plate majority is bubble column, valve tower, sieve-plate tower etc. in processes such as the distillation of chemical industry, absorption, desorb, humidification.The disposal ability of these column plates is little, and pressure drop is big.In recent years, some novel column plates have appearred, vertical sieve tray as ejection-type, though all be significantly improved at aspects such as disposal ability, efficient, but mist entrainment is low not enough, and the backmixing of liquid phase on the column plate is serious, and plate pressure drop is also higher, plate efficiency is high not enough, and industrial application also only limits to some specific industry.

The purpose of this utility model is to overcome weak point of the prior art and a kind of Guide spray column plate is provided, and this column plate can effectively reduce backmixing of liquid phase and the entrainment on the column plate, improves plate efficiency.

Technical solution of the present utility model is as follows:

The structure of Guide spray column plate is, adorning horizontal column plate in tower, has air rising hole on the column plate, jet cover is being adorned in each air rising hole corresponding position, have spray-hole on the jet cover, crack, the end is arranged between jet cover and the column plate, 1～10 Guide spray separating plate is being adorned by pillar in the top of jet cover.

Separating plate can be dull and stereotyped, also can be the plate of band radian.

Several separating plates can be installed in sustained height, and this moment, the horizontal sextant angle of separating plate and jet cover was 0 °～45 °.Several separating plates can be installed in differing heights, and this moment, the horizontal sextant angle of separating plate and jet cover was-45 °～45 °.

The utility model compared with prior art has following advantage:

This Guide spray column plate is after loading onto the Guide spray separating plate above the jet cover, its disposal ability improves 60%～100% than vertical sieve tray, and plate pressure drop reduces by 20%～30%; Backmixing of liquid phase reduces 50%～100% on the plate, and the gas phase entrainment reduces 100%～200%.

The drawing of accompanying drawing is described as follows:

Guide spray tower plate structure schematic diagram when Fig. 1 is single jet cover;

Fig. 2 is the layout viewing of jet cover on column plate.

Below in conjunction with accompanying drawing the utility model embodiment is done further auspicious stating:

The structure of Guide spray column plate as shown in Figure 1 and Figure 2, in Ta Bi (1), adorning horizontal column plate (7) and downspout (5), have three row's air rising holes (8) on the column plate, adorning jet cover (2) (as shown in Figure 2) in each air rising hole corresponding position, have spray-hole (3) on the jet cover, crack, the end (6) is arranged between jet cover and the column plate, adorning the three plate Guide spray separating plates (4) that arrange successively at the top of jet cover sustained height by pillar (9) frame, the horizontal sextant angle of Guide spray separating plate and jet cover is 15 °.

The arrange state of Guide spray column plate in tower as shown in Figure 2.

The operation principle of Guide spray column plate is: liquid flows down from the downspout of last layer column plate, gas enters in the jet cover by air rising hole from the below of column plate, when in gas enters jet cover, rising, liquid crack at the bottom of the jet cover is sucked in the jet cover, and be ground into drop by gas.This burst gas-liquid mixed stream is by the spray-hole ejection of open jet cover top and side.Gas-liquid mixture by the top ejection is beaten on the Guide spray separating plate, and drop is made that by broken and cohesion once more the gas-liquid contact is more abundant.Because the guide effect of guiding separating plate makes the gas-liquid mixture that rises change flow direction, along the guide direction ejection of Guide spray separating plate; Because the centrifugation of guiding separating plate fully separates gas-liquid, effectively prevent the back-mixing of liquid phase on entrainment and the plate again, improved the column plate mass-transfer efficiency.

The utility model the experiment proved that: in liquid handling amount one regularly, along with the increase of uprising gas speed, gas meeting entrained liquids is to upper strata column plate, i.e. entrainment.Experimental results show that: because the centrifugation of Guide spray separating plate,, do not have obvious entrainment when when in the dead of night putting gas speed and begin to increase by 8～10 times; Because the backmixing of liquid phase on the column plate has effectively been avoided in the guide effect of Guide spray separating plate, increased the motive force of transmitting, improved mass-transfer efficiency.

Claims

1, a kind of Guide spray column plate, be in tower, to adorn horizontal column plate, have air rising hole on the column plate, jet cover is being adorned in each air rising hole corresponding position, have spray-hole on the jet cover, crack, the end is arranged between jet cover and the column plate, it is characterized in that: 1～10 Guide spray separating plate is being adorned by pillar in the top of jet cover.

2, according to the said Guide spray column plate of claim 1, it is characterized in that: separating plate can be dull and stereotyped, also can be the plate of band radian.

3, according to claim 1 or 2 said Guide spray column plates, it is characterized in that: several separating plates can be installed in sustained height, and this moment, the horizontal sextant angle of separating plate and jet cover was 0 °～45 °.

4, according to claim 1 or 2 said Guide spray column plates, it is characterized in that: several separating plates can be installed in differing heights, and this moment, the horizontal sextant angle of separating plate and jet cover was-45 °～45 °.