CN1321713C - Plate tower with mechanical defoaming downpipe - Google Patents
Plate tower with mechanical defoaming downpipe Download PDFInfo
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- CN1321713C CN1321713C CNB200510049170XA CN200510049170A CN1321713C CN 1321713 C CN1321713 C CN 1321713C CN B200510049170X A CNB200510049170X A CN B200510049170XA CN 200510049170 A CN200510049170 A CN 200510049170A CN 1321713 C CN1321713 C CN 1321713C
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- plate
- downspout
- herringbone
- corrugated plating
- herringbone corrugated
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Abstract
The present invention relates to a plate tower with a mechanical defoaming downpipe, which comprises a tower plate, a downpipe and a defoaming assembly, wherein the defoaming assembly is positioned in the downpipe and is composed of a plurality of herringbone corrugated plates which are mutually parallel. The open end of the herringbone corrugated plate is downward. The ratio between the height of the defoaming assembly and plate spacing is from 0.1 to 0.8. The ratio between the plate spacing and the distance between the bottom of the defoaming assembly and a tower plate of the lower layer is from 0.2 to 0.8. The spacing of the herringbone parallel corrugated plate is from 5 to 20mm, the included angle of the herringbone corrugated plate is from 10 to 170 DEG, and the thickness of the herringbone corrugated plate is from 0.1 to 3mm. The defoaming assembly arranged in the downpipe can be used for mechanically defoaming and exploding foam so that foam layer height can be effectively restrained. Thus, that liquid overflow occurs in advance can be prevented. The herringbone corrugated plate with the open end downward has downward active force on liquid in the downpipe, restrains the fluctuation of the liquid, decreases the height of a supernatant layer and can prevent the liquid overflow from occurring in advance.
Description
(1) technical field
The present invention relates to the gas-liquid mass transfer (contact) equipment in the chemical process, relate in particular to plate column.
(2) background technology
Plate column is widely used in engineering fields such as chemical industry, oil, light industry and environmental protection as gas-liquid interphase mass transfer equipment.In the operating process of plate column, avoid taking place the phenomenon of the normal running of this destruction tower of liquid flooding.Liquid flooding can be divided into liquid foam entrainment liquid flooding and two kinds of situations of downspout liquid flooding: liquid foam entrainment can bring to the upper strata column plate with the big quantity of fluid of lower floor's column plate, when serious liquid flooding will take place; Surpass the downspout handling capacity and cause in the downspout supernatant layer too high or downspout inner foam layer height is too high all can cause the downspout liquid flooding when fluid flow in the tower is excessive.
For easy foaming system, the foam layer height in the downspout is too high to be the major reason that liquid flooding in advance takes place, and does not also have good solution at present.Certainly, for easy foaming system, the height of supernatant layer also must be controlled effectively in the downspout.
(3) summary of the invention
Handle the deficiency that easy foaming system is easy to generate the downspout liquid flooding in order to overcome in the prior art plate column, the invention provides a kind of column plate with novel downspout that can effectively suppress downspout inner foam layer and clear liquid layer height.
The technical solution adopted for the present invention to solve the technical problems is: but a kind of plate column with mechanical defoaming downspout, comprise column plate, downspout, also comprise the froth breaking assembly that is positioned at described downspout, described froth breaking board component is made up of the some herringbone corrugated platings that are parallel to each other, and the openend of described herringbone corrugated plating down.
Further, the height of described froth breaking board component is 0.1～0.8 with the ratio of distance between plates, froth breaking assembly bottom is 0.2～0.8 to the ratio of the distance of lower floor's column plate and distance between plates, the spacing of the herringbone parallel wave card that is parallel to each other is 5～20mm, the angle of described herringbone corrugated plating is 10 °～170 °, and the thickness of described herringbone corrugated plating is 0.1～3mm.
Further again, offer balance pipe and slit on the described herringbone corrugated plating.
Beneficial effect with column plate of mechanical defoaming function downspout of the present invention mainly shows: 1. be arranged on the interior froth breaking assembly of downspout and can carry out mechanical defoaming, abolish foam, foam layer height is effectively suppressed, avoided the generation of liquid flooding in advance.2. openend herringbone corrugated plating down produces downward active force to liquid in pipe, suppresses the fluctuation of liquid, reduces the height of supernatant layer, also can prevent the generation of liquid flooding in advance.
(4) description of drawings
Fig. 1 is the interior froth bed situation schematic diagram of downspout that easy foaming substance ties up to common plate column.
Fig. 2 is the structural representation that has added in the downspout behind the froth breaking assembly.
Fig. 3 is the structural representation of froth breaking assembly.
Fig. 4 is the downspout foam layer height comparison diagram that air-water system, air-Yi foaming system add and do not add the froth breaking board component.
Fig. 5 is the clear liquid layer height comparison diagram that air-water system, air-Yi foaming system add and do not add the froth breaking board component.
(5) specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further described.
Embodiment one
With reference to Fig. 1, the liquid on the column plate 1 is crossed exit weir 2 and is entered downspout 3 generation foams, and the liquid in the downspout 3 produce fluctuation simultaneously, and the system that easily bubbles is compared with difficult foaming system, and froth bed is much higher, thereby very easily causes downspout to shift to an earlier date liquid flooding.
With reference to Fig. 2,3, the present invention is provided with froth breaking assembly 4 on the basis of existing technology in downspout 3, and this froth breaking assembly 4 is made up of the some herringbone corrugated platings 5 that are parallel to each other, and the openend of herringbone corrugated plating 5 down.The height of froth breaking board component 4 is 0.1 with the ratio of distance between plates, froth breaking assembly bottom is 0.8 to the ratio of the distance of lower floor's column plate and distance between plates, distance between the herringbone corrugated plating 5 can be determined by the set a distance pipe, the spacing of the herringbone corrugated plating 5 that is parallel to each other is 5mm, the angle of herringbone corrugated plating 5 is 10 °, and the thickness of herringbone corrugated plating 5 is 0.1mm.Described corrugated plating can be tabular ripple, also can be netted ripple, and material can adopt the composite of carbon steel, stainless steel, aluminium alloy, plastics, fiberglass, enamel or its formation.
Produce foam after the liquid on the column plate 1 is crossed exit weir 2 to enter downspout 3, form froth bed in downspout 3, the liquid in the downspout 3 produces fluctuation simultaneously.Mechanical defoaming is carried out in the collision of the wooden partition of froth bed and froth breaking assembly 4, friction when foam layer height reaches froth breaking assembly 4, thereby reaches the purpose that suppresses foam layer height.In addition, the liquid of 5 pairs of fluctuations of downward opening herringbone corrugated plating produces downward active force, thereby can reduce because of the higher clear liquid layer height of liquid fluctuation.
Embodiment two
With reference to Fig. 1,2,3, the height of froth breaking board component 4 is 0.8 with the ratio of distance between plates, froth breaking assembly bottom is 0.2 to the ratio of the distance of lower floor's column plate and distance between plates, the spacing of the herringbone corrugated plating 5 that is parallel to each other is 20mm, the angle of herringbone corrugated plating 5 is 170 °, and the thickness of herringbone corrugated plating 5 is 3mm.All the other structures are identical with embodiment one with embodiment.
Embodiment three
With reference to Fig. 1,2,3, the height of froth breaking board component 4 is 0.3 with the ratio of distance between plates, froth breaking assembly bottom is 0.7 to the ratio of the distance of lower floor's column plate and distance between plates, the spacing of the herringbone corrugated plating 5 that is parallel to each other is 7mm, the angle of herringbone corrugated plating 5 is 30 °, and the thickness of herringbone corrugated plating 5 is 0.5mm.All the other structures are identical with embodiment one with embodiment.
Embodiment four
With reference to Fig. 1,2,3, the height of froth breaking board component 4 is 0.4 with the ratio of distance between plates, froth breaking assembly bottom is 0.5 to the ratio of the distance of lower floor's column plate and distance between plates, the spacing of the herringbone corrugated plating 5 that is parallel to each other is 10mm, the angle of herringbone corrugated plating 5 is 60 °, and the thickness of herringbone corrugated plating 5 is 1mm.All the other structures are identical with embodiment one with embodiment.
Embodiment five
With reference to Fig. 1,2,3, the height of froth breaking board component 4 is 0.6 with the ratio of distance between plates, froth breaking assembly bottom is 0.3 to the ratio of the distance of lower floor's column plate and distance between plates, the spacing of the herringbone corrugated plating 5 that is parallel to each other is 13mm, the angle of herringbone corrugated plating 5 is 90 °, and the thickness of herringbone corrugated plating 5 is 1.5mm.All the other structures are identical with embodiment one with embodiment.
Embodiment six
With reference to Fig. 1,2,3, the height of froth breaking board component 4 is 0.7 with the ratio of distance between plates, froth breaking assembly bottom is 0.3 to the ratio of the distance of lower floor's column plate and distance between plates, the spacing of the herringbone corrugated plating 5 that is parallel to each other is 15mm, the angle of herringbone corrugated plating 5 is 120 °, and the thickness of herringbone corrugated plating 5 is 2mm.All the other structures are identical with embodiment one with embodiment.
Embodiment seven
With reference to Fig. 1,2,3, the height of froth breaking board component 4 is 0.8 with the ratio of distance between plates, froth breaking assembly bottom is 0.2 to the ratio of the distance of lower floor's column plate and distance between plates, the spacing of the herringbone corrugated plating 5 that is parallel to each other is 18mm, the angle of herringbone corrugated plating 5 is 150 °, and the thickness of herringbone corrugated plating 5 is 2.5mm.All the other structures are identical with embodiment one with embodiment.
Embodiment eight
On the herringbone corrugated plating, offer balance pipe and slit.Plane, slit place can be vertical with corrugated plating, thereby also can make corrugated plating have the structure of similar shutter at angle with corrugated plating, this wherein the latter's defoaming effect be better than the former.All the other structures are identical with embodiment four with embodiment.
Embodiment nine
On the herringbone corrugated plating, offer balance pipe and slit.Plane, slit place can be vertical with corrugated plating, thereby also can make corrugated plating have the structure of similar shutter at angle with corrugated plating, this wherein the latter's defoaming effect be better than the former.All the other structures are identical with embodiment five with embodiment.
Embodiment ten
With reference to Fig. 1,2,3,4,5, cold mould experiment is carried out in the rectangle tower of 300 * 200mm, and column plate 1 is the rectangle sieve plate, and downspout 3 is square downcomer, distance between plates 400mm.Sieve diameter 6mm, percent opening 5.5%, the wide 43mm of square downcomer, height of weir 50mm, crack 30mm at the bottom of the downspout.Experiment test liquid spraying density be 50m
3/ m
2During h, after not adding and adding the froth breaking board component, the downspout 3 inner foam layer and the clear liquid layer heights of air-non-foaming system, air-Yi foaming system.Non-foaming system is selected water for use, and the system that easily bubbles is selected the mixed solution of NaLS, G ﹠ W for use.Froth breaking board component height is 160mm, froth breaking assembly bottom to lower floor's column plate apart from 80mm, herringbone corrugated plating 5 thickness that are parallel to each other are 0.5mm, spacing is 40mm, the angle of herringbone corrugated plating 5 is 90 °, the straightsided shape structural shape of alternation rule, and the corrugated plating material is selected stainless steel for use.
From Fig. 4, Fig. 5 as can be seen, behind the interpolation froth breaking board component, the foam layer height of air-water system descends more than 15%, and clear liquid layer height descends more than 10%; Air-Yi foaming system foam layer height descends more than 16%, and clear liquid layer height descends more than 10%.This explanation downspout froth breaking board component produces effect, and can contain the increase of the downspout inner foam layer height that causes because of easy foaming system.
Claims (3)
1. but plate column with mechanical defoaming downspout, comprise column plate, downspout, it is characterized in that: also comprise the froth breaking assembly that is positioned at described downspout, described froth breaking board component is made up of the some herringbone corrugated platings that are parallel to each other, and the openend of described herringbone corrugated plating down.
2. but the plate column with mechanical defoaming downspout as claimed in claim 1, it is characterized in that: the height of described froth breaking board component is 0.1～0.8 with the ratio of distance between plates, froth breaking assembly bottom is 0.2～0.8 to the ratio of the distance of lower floor's column plate and distance between plates, the spacing of the herringbone parallel wave card that is parallel to each other is 5～20mm, the angle of described herringbone corrugated plating is 10 °～170 °, and the thickness of described herringbone corrugated plating is 0.1～3mm.
3. but the plate column with mechanical defoaming downspout as claimed in claim 1 or 2 is characterized in that: offer balance pipe and slit on the described herringbone corrugated plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510049170XA CN1321713C (en) | 2005-03-02 | 2005-03-02 | Plate tower with mechanical defoaming downpipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510049170XA CN1321713C (en) | 2005-03-02 | 2005-03-02 | Plate tower with mechanical defoaming downpipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1692968A CN1692968A (en) | 2005-11-09 |
| CN1321713C true CN1321713C (en) | 2007-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510049170XA Expired - Fee Related CN1321713C (en) | 2005-03-02 | 2005-03-02 | Plate tower with mechanical defoaming downpipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1321713C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7445200B2 (en) * | 2005-12-23 | 2008-11-04 | Amt International, Inc. | Gas-liquid contactor baffle |
| CN110937646A (en) * | 2019-10-24 | 2020-03-31 | 光大环境科技（中国）有限公司 | Denitrogenation column plate for ammonia still |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56139101A (en) * | 1980-04-02 | 1981-10-30 | Hitachi Ltd | Vapor-liquid contacting apparatus |
| JPS56147601A (en) * | 1980-04-15 | 1981-11-16 | Nissan Eng Kk | Preventing method for foaming in liquid-vapor contactor |
-
2005
- 2005-03-02 CN CNB200510049170XA patent/CN1321713C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56139101A (en) * | 1980-04-02 | 1981-10-30 | Hitachi Ltd | Vapor-liquid contacting apparatus |
| JPS56147601A (en) * | 1980-04-15 | 1981-11-16 | Nissan Eng Kk | Preventing method for foaming in liquid-vapor contactor |
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| Publication number | Publication date |
|---|---|
| CN1692968A (en) | 2005-11-09 |
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Granted publication date: 20070620 Termination date: 20100302 |