CN103933758B - A kind of falling liquid film volatilization tower inner member - Google Patents
A kind of falling liquid film volatilization tower inner member Download PDFInfo
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- CN103933758B CN103933758B CN201410129126.9A CN201410129126A CN103933758B CN 103933758 B CN103933758 B CN 103933758B CN 201410129126 A CN201410129126 A CN 201410129126A CN 103933758 B CN103933758 B CN 103933758B
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- deflection plate
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- deflection
- falling liquid
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Abstract
The present invention relates to a kind of falling liquid film volatilization tower inner member, formed by some deflection plates. Deflection plate is square, rectangle or trapezoidal, and deflection plate middle part has equidistant hole, and one end is zigzag, and two deflection plates are connected with 1 ° to 150 ° angle; Junction apart from deflection plate top distance between 5mm to 20mm. Described deflection plate middle part has equidistant rectangular opening, the geometric center horizontal spacing in hole between 10mm to 200mm, the top in hole apart from deflection plate top distance between 15mm to 200mm, lower end apart from deflection plate sawtooth distance between two tips between 15mm to 200mm. Particular design of the present invention ensures that falling liquid film liquid level fully upgrades, and produces huge devolatilization interface. This falling liquid film volatilization tower inner member is simple in structure, devolatilization efficiency is high, operating flexibility is large, manufacturing expense is low, and processing is simple, can be widely used in various chemical industry devolatilization operating units.
Description
Technical field
The present invention relates to a kind of gravity falling liquid film volatilization tower (device) inner member, particularly a kind of face is constantly updatedThe falling liquid film volatilization tower inner member of high-specific surface area.
Background technology
Devolatilization is an important step of Chemical Manufacture, and its task is that volatile materials is transferred to gas from liquid phasePhase. The main path that improves devolatilization efficiency comprises:
1, improve devolatilization system temperature;
2, reduce the dividing potential drop of volatile component in gas phase;
3, strengthen gas-liquid interface;
4, the interface that upgrades in time.
Devolatilization system temperature is limited by process conditions license, and reducing volatile component gaseous phase partial pressure can be by adopting
Inertia
Gas is carrier or controls devolatilizer operating pressure and realize, strengthens gas-liquid interface and interface and upgrade mainDepend on the structure of devolatilizer.
The devolatilizer of at present existing various ways is moved in commercial plant. Manage interior falling liquid film or flow down fluid column (dripping)Type devolatilizer can provide sizable gas-liquid interface, but interface do not upgrade substantially, and the time of staying is uncontrollable, canCan affect devolatilization effect because of deficiency of time. Configuration single shaft or the many disks of twin shaft (net) are though the horizontal devolatilizer stirringCan effectively upgrade to a certain extent interface the capable of regulating liquid level control time of staying, but structure is too complicated, manufacturesHigh with operating cost. For ensureing rate of film build, enough liquid layer degree of depth, hydrostatic head pair must be arranged at this class devolatilizer bottomDevolatilization effect has negative effect.
Summary of the invention
The object of this invention is to provide a kind of Novel falling film volatilization tower inner member, its feature is that gas-liquid interface is large,Upgrade, all materials are all in filminess, and structure cylinder list, manufacture, operating cost is low.
Technical scheme of the present invention is as follows:
A kind of falling liquid film volatilization tower inner member, is characterized in that being made up of polylith deflection plate, described deflection plate be square,Rectangle or trapezoidal, deflection plate middle part has equidistant hole, bottom is zigzag, two deflection plates with 1 ° to 150° angle is connected.
Described deflection plate middle part has equidistant hole, the geometric center horizontal spacing in hole 10mm to 200mm itBetween, the top in hole is apart from deflection plate top distance between 15mm to 200mm, and lower end is apart from deflection plate sawtooth tipDistance is between 15mm to 200mm.
Equidistant hole, described deflection plate middle part is rectangular opening, tri-angle-holed or trapezoidal hole.
The perforate direction in described equidistant hole is vertical baffling plate direction or selects oblique perforate; Percent opening is 0.5Between 0.95.
Described deflection plate quantity is between 2 to 20.
The zigzag of described deflection plate, sawtooth tip angle is between 30 ° to 120 °, and sawtooth height is at 10mmBetween 100mm.
Between described deflection plate, being that sawtooth is most advanced and sophisticated is connected by spot welding with the non-sawtooth top of other deflection plate, two foldingsBetween stream plate, angle is between 1 ° to 150 °.
Described bore diameter of baffle plate vertical direction length is between 100mm to 500mm.
Described bore diameter of baffle plate spacing is between 1mm to 10mm.
Advantage of the present invention has:
1, changed traditional dull and stereotyped falling liquid film devolatilization form, perforate on flat board, makes falling liquid film liquid level abundant
Upgrade, produce huge devolatilization interface, improve gas-liquid mass transfer efficiency.
2, perforate size shape flexibly changing, adapts to different system occasions.
3, because perforated area is larger, devolatilization area is larger, and the system little for relative volatility has more advantage.
4, deflection plate lower end zigzag can play drainage, contributes to liquid film forming on deflection plate simultaneously.
Brief description of the drawings
Fig. 1 is out the deflection plate unit front view of slot;
Fig. 2 is out the deflection plate unit front view of trapezoidal hole;
Fig. 3 is out tri-angle-holed deflection plate unit front view;
Some deflection plate composition falling liquid film volatilization tower inner members of Fig. 4.
Detailed description of the invention
Illustrate the present invention below in conjunction with accompanying drawing and implementation column:
As shown in Figure 1 to 4: Novel falling film volatilization tower inner member provided by the invention is by polylith baffle groupsBecome, deflection plate quantity is determined according to the size of the flow of devolatilization system, viscosity and tower, is generally 2 extremelyBetween 20. When flow is little, viscosity size large, tower is when larger, required deflection plate quantity is larger; WhenFlow is large, viscosity is little, the size of tower hour, the quantity of the deflection plate of telling is less. Described deflection plate isRectangle or trapezoidal or triangle, vertical direction length depends on the fluctuation of devolatilization material falling liquid film.
Described deflection plate lower end is zigzag, and sawtooth tip angle is between 30 ° to 120 °, and sawtooth height existsBetween 10mm to 100mm. Each sawtooth size can equate, also can be arranged to as required vary in sizeSawtooth.
Described deflection plate middle part has rectangular opening conventionally, also can be split into as required tri-angle-holed or trapezoidal hole. OpenTop, hole apart from deflection plate along distance between 15mm to 200mm, perforate lower end is apart from deflection plate sawtooth tipDistance is between 15mm to 200mm. Perforate direction is generally vertical baffling plate direction, also can be as requiredSelect oblique perforate. Percent opening is determined according to the viscosity of devolatilization material, surface tension, operating temperature etc., generalBe between 0.5 to 0.95. When the viscosity of devolatilization material is large, surface tension is large, operating temperature is when higher, requiredPercent opening is larger, when the viscosity of devolatilization material is little, surface tension is little, operating temperature is when lower, required percent openingLarger.
Between described deflection plate, being that sawtooth is most advanced and sophisticated is connected by spot welding with the top of other deflection plate, between two deflection platesAngle between 1 ° to 150 °, on deflection plate junction and deflection plate along distance 5mm to 20mm itBetween.
Described bore diameter of baffle plate vertical direction length, depending on the fluctuation of devolatilization material, is generally 100mm extremelyBetween 500mm, in the time that material fluctuation is large, vertical direction length is less, when material fluctuation hour,Perforate vertical direction length is larger. Perforate cross-directional length depends on viscosity and the surface tension of devolatilization material,Be generally between 100mm to 500mm, when the viscosity of material and surface tension are when larger, required perforate waterSquare larger to length, when the viscosity of material and surface tension hour, required perforate cross-directional length is less.
Described bore diameter of baffle plate spacing depends on the physical property of rigidity of material and devolatilization material, is generally 1mm extremelyBetween 10mm.
The following example further illustrates the present invention, but protection domain of the present invention is not limited to embodiment.
Embodiment 1: polyacrylonitrile volatilization tower
Volatilization tower diameter 1000mm, high 7500mm, monolithic deflection plate is 930mmX800mmX2mm, arranges 8Piece deflection plate, opens rectangular opening, and perforate direction is the oblique perforate that is 60 ° of angles with deflection plate, and percent opening is 92%.Film forming in the time that dropping liq flows to tapping contacts with uprising gas and carries out mass transfer on film. Liquid film flows through outHole, due to the drainage of jagged edge, liquid film can flow on next piece deflection plate smoothly.
Polyacrylonitrile solution containing 2.5% acrylonitrile monemer enters tower, 140 DEG C of temperature, flow 6000kg/h, towerInternal pressure 0.5MPa, going out acrylonitrile monemer in tower polyacrylonitrile solution can purify. Inner member that this patent adoptsImprove 20% than traditional handicraft mass-transfer efficiency.
Embodiment 2: polystyrene volatilization tower
Volatilization tower is through 900mm, high 6000mm, and monolithic deflection plate is 800mmX600mmX2mm, arranges 7Piece deflection plate, to open trapezoidal hole perpendicular to deflection plate direction, percent opening is 86%. Containing gathering of 5% styrene monomerStyrene solution enters tower, 232 DEG C of temperature, and flow 5000kg/h, tower internal pressure 1.0MPa, goes out tower polystyreneIn solution, styrene monomer content is 0.05%. Inner member that this patent adopts improves than traditional handicraft mass-transfer efficiency18%。
Embodiment 3: polyvinyl acetate solution removes toluene
Volatilization tower is through 1000mm, high 8000mm, and monolithic deflection plate is 800mmX800mmX2mm, arranges 9Piece deflection plate, tri-angle-holed to open perpendicular to deflection plate direction, percent opening is 80%. Containing 30% styrene monomerPolystyrene solution enter tower, 335 DEG C of temperature, flow 5000kg/h, tower internal pressure 0.5MPa, goes out tower polyphenylIn vinyl solution, styrene monomer can all remove. Inner member that this patent adopts is carried than traditional handicraft mass-transfer efficiencyHigh by 15%.
Claims (8)
1. a falling liquid film volatilization tower inner member, is characterized in that being made up of polylith deflection plate, described deflection plate be square,Rectangle or trapezoidal, deflection plate middle part has equidistant hole, and bottom is zigzag, and two deflection plates are with 1 ° extremely150 ° of angles are connected; Described deflection plate middle part has equidistant hole, and the geometric center horizontal spacing in hole is at 10mmBetween 200mm, the top in hole is apart from deflection plate top distance between 15mm to 200mm, and lower end is apart from bafflingBladed saw tooth distance between two tips is between 15mm to 200mm.
2. member as claimed in claim 1, is characterized in that equidistant hole, described deflection plate middle part is rectangular opening, threeDihedral hole or trapezoidal hole.
3. member as claimed in claim 1, the perforate direction that it is characterized in that described equidistant hole is vertical baffling plateDirection or select oblique perforate; Percent opening is between 0.5 to 0.95.
4. member as claimed in claim 1, is characterized in that described deflection plate quantity is between 2 to 20.
5. member as claimed in claim 1, is characterized in that the zigzag of described deflection plate, and sawtooth tip angle existsBetween 30 ° to 120 °, sawtooth height is between 10mm to 100mm.
6. member as claimed in claim 1, is characterized in that between described deflection plate it being the most advanced and sophisticated and other deflection plate of sawtoothNon-sawtooth top connect by spot welding, between two deflection plates, angle is between 1 ° to 150 °.
7. member as claimed in claim 1, is characterized in that described bore diameter of baffle plate vertical direction length is 100mmBetween 500mm.
8. member as claimed in claim 1, is characterized in that described bore diameter of baffle plate spacing is between 1mm to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129126.9A CN103933758B (en) | 2014-04-01 | 2014-04-01 | A kind of falling liquid film volatilization tower inner member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129126.9A CN103933758B (en) | 2014-04-01 | 2014-04-01 | A kind of falling liquid film volatilization tower inner member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103933758A CN103933758A (en) | 2014-07-23 |
| CN103933758B true CN103933758B (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410129126.9A Active CN103933758B (en) | 2014-04-01 | 2014-04-01 | A kind of falling liquid film volatilization tower inner member |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1541742A (en) * | 2003-11-06 | 2004-11-03 | Crib slot and falling film volatilization tower | |
| CN1735454A (en) * | 2002-11-25 | 2006-02-15 | Abb路慕斯全球股份有限公司 | Apparatus for countercurrent contacting of gas and solids |
| CN102000435A (en) * | 2010-11-22 | 2011-04-06 | 苏州市中衡压力容器制造有限公司 | Defoaming device of plate type falling film evaporator |
-
2014
- 2014-04-01 CN CN201410129126.9A patent/CN103933758B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1735454A (en) * | 2002-11-25 | 2006-02-15 | Abb路慕斯全球股份有限公司 | Apparatus for countercurrent contacting of gas and solids |
| CN1541742A (en) * | 2003-11-06 | 2004-11-03 | Crib slot and falling film volatilization tower | |
| CN102000435A (en) * | 2010-11-22 | 2011-04-06 | 苏州市中衡压力容器制造有限公司 | Defoaming device of plate type falling film evaporator |
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| Publication number | Publication date |
|---|---|
| CN103933758A (en) | 2014-07-23 |
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