CN111151032A - Electric heating defoaming and defoaming device and working method thereof - Google Patents
Electric heating defoaming and defoaming device and working method thereof Download PDFInfo
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- CN111151032A CN111151032A CN202010032562.XA CN202010032562A CN111151032A CN 111151032 A CN111151032 A CN 111151032A CN 202010032562 A CN202010032562 A CN 202010032562A CN 111151032 A CN111151032 A CN 111151032A
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- electric heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
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Abstract
The invention discloses an electric heating defoaming and defoaming device and a working method thereof, and belongs to the technical field of industrial equipment. The device comprises an inclined three-way pipe, a condenser connected with the upper end of a main pipe of the inclined three-way pipe, a liquid return pipe connected with the lower end of the main pipe and a foam riser pipe connected with a branch pipe of the inclined three-way pipe; the two stages of electric heating wire nets are arranged in the foam rising pipe to defoam and remove foam, and the generated steam is condensed and recycled. The foam eliminating device has the advantages of simple structure, reasonable design, simplicity and convenience in operation, high efficiency, low cost, no use of a defoaming agent in the process, environmental friendliness, no pollution, and good compatibility with any industrial equipment, and is suitable for all industrial processes needing foam elimination.
Description
Technical Field
The invention belongs to the technical field of industrial equipment, and particularly relates to an electric heating defoaming device and a working method thereof.
Background
In the industrial production process in fields such as fine chemical industry, biological fermentation and printing and dyeing papermaking, foam often can be produced, the production safety problems such as inconvenient operation, product towards material and pipeline jam superpressure can not only be caused in the production of foam, can lead to production cost problems such as product quality fluctuation, raw materials and product waste moreover, consequently, the high-efficient elimination of foam is a common, the key technical problem that need solve urgently in the industrial field.
The prior art disclosed in the patent about defoaming is mainly classified into two types of mechanical defoaming and chemical defoaming according to the working principle. The mechanical defoaming method achieves the purposes of defoaming and defoaming by the action of external mechanical force, and the common defoaming and defoaming modes comprise the following steps: ultrasonic defoaming (CN 104645672B), pneumatic defoaming (CN 106837220A), centrifugal defoaming (CN 2785679Y), spiral flow defoaming (CN 105545235B), screen extrusion defoaming (CN 209501051U) and the like, but the mechanical defoaming method has the problems of lower foam elimination rate, higher energy consumption, huge and complicated equipment and the like in the actual application process. The chemical defoaming method is to add a defoaming agent into foam to achieve the purpose of defoaming and defoaming, and common defoaming agents are: amide defoaming agents (CN 110283091A), mineral oil defoaming agents (CN 109647008B), organic silicon defoaming agents (CN 108159738B), polyether defoaming agents (CN 105833572B) and the like, but the addition of the defoaming agents can cause the problems of product pollution, the need of introducing additional separation and purification equipment, the generation of high-COD chemical sewage, the increase of sewage treatment cost and product cost and the like.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide an electrothermal defoaming and defoaming device and a working method thereof, which have the advantages of simple structure, reasonable design, simplicity and convenience in operation, high efficiency, low cost, no use of a defoaming agent in the process, environmental friendliness, no pollution, good compatibility with any industrial equipment and suitability for all industrial processes needing defoaming.
The invention is realized by the following technical scheme:
the invention discloses an electric heating defoaming and defoaming device, which comprises an inclined three-way pipe, a condenser connected with the upper end of a main pipe of the inclined three-way pipe, a liquid return pipe connected with the lower end of the main pipe and a foam ascending pipe connected with a branch pipe of the inclined three-way pipe; the liquid return pipe is provided with a one-way valve; a first electric heating wire mesh and a second electric heating wire mesh are sequentially arranged in the foam ascending pipe from bottom to top, the first electric heating wire mesh is connected with a first temperature controller, and the second electric heating wire mesh is connected with a second temperature controller.
Preferably, the first electric heating wire mesh and the second electric heating wire mesh are externally coated with insulating layers.
Preferably, the mesh number of the first electric heating wire mesh and the second electric heating wire mesh is 4-400 meshes.
Preferably, the mesh number of the first electric heating wire net is smaller than that of the second electric heating wire net.
Preferably, the inner wall of the branch pipe of the inclined tee pipe is provided with an anti-condensation layer.
Preferably, the condenser is a tube cooler.
The invention discloses a working method of the electrothermal defoaming and defoaming device, which comprises the following steps:
step 1: selecting a first electric heating wire mesh and a second electric heating wire mesh with matched meshes according to the sizes of bubbles in the foam;
step 2: before foam is generated, the temperature of the first electric heating wire mesh and the temperature of the second electric heating wire mesh are adjusted to be higher than the boiling point of the bubble liquid film through the first temperature controller and the second temperature controller;
and step 3: the foam entering the device rises along the foam rising pipe, firstly contacts with the first electric heating wire net, the liquid film is vaporized, the foam is broken, the generated steam and the foam which is not eliminated continuously rise and then contact with the second electric heating wire net, and the generated steam enters the condenser along the inclined three-way pipe branch pipe;
and 4, step 4: after the steam is condensed into liquid by the condenser, the liquid flows out of the device along the liquid return pipe through the one-way valve under the action of gravity.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses an electric heating defoaming and defoaming device, which comprises an inclined three-way pipe, a condenser connected with the upper end of a main pipe of the inclined three-way pipe, a liquid return pipe connected with the lower end of the main pipe and a foam ascending pipe connected with a branch pipe of the inclined three-way pipe; the two stages of electric heating wire nets are arranged in the foam rising pipe to defoam and remove foam, and the generated steam is condensed and recycled. The electric heating defoaming and defoaming device does not have vibration and rotating parts in the traditional mechanical defoaming equipment, and has the advantages of low failure rate and long service life; the liquid film vaporization technology is adopted, the operation is convenient, and the temperature of the electric heating wire mesh is higher than the boiling point of the foam liquid film simply by adjusting the temperature controller, so that the defoaming and defoaming effects are achieved; in the process, no defoaming agent is added, so that the defoaming agent can be prevented from polluting products; the two-stage electric heating wire mesh can ensure that the foam elimination rate reaches one hundred percent; the liquid formed by the foam liquid film can be recycled, the condenser condenses the gas generated by vaporization of the foam liquid film into liquid, and the condensate flows back to the original reaction container through the liquid return pipe, so that waste of the solvent or the product is avoided, and heat can be recycled; the foam eliminating device has the advantages of simple structure, reasonable design, good compatibility with any industrial equipment, and suitability for all industrial processes needing foam elimination.
Furthermore, the electric heating wire mesh with the proper mesh number is selected according to the size of the bubbles in the foam, so that a better effect can be achieved, and the efficiency is higher.
Furthermore, the mesh number of the first electric heating wire mesh is smaller than that of the second electric heating wire mesh, so that the effect of defoaming and defoaming in a grading manner can be achieved, and the efficiency of the device is improved.
Furthermore, the inner wall of the branch pipe of the inclined three-way pipe is provided with a condensation-proof layer, so that the phenomenon that part of steam is condensed and flows back to the foam ascending pipe without reaching the main pipe in the ascending process to influence the efficiency of the device can be prevented.
Furthermore, the condenser adopts a tubular cooler, steam is not contacted with a cooling medium, the cooling efficiency is high, and the heat of the steam can be recovered.
The invention discloses a working method of the electrothermal defoaming and defoaming device, which is simple and convenient to operate, high in efficiency, low in cost, green, environment-friendly and pollution-free, and defoaming agents are not used in the process.
Drawings
Fig. 1 is a schematic view of the overall structure of the electrothermal defoaming device of the present invention.
In the figure: 1-foam ascending pipe, 2-first electric heating wire net, 3-second electric heating wire net, 4-first sealing wiring hole, 5-second sealing wiring hole, 6-first temperature controller, 7-second temperature controller, 8-three-way pipe, 9-condenser, 10-liquid return pipe and 11-one-way valve.
Detailed Description
The invention will now be described in further detail with reference to the following drawings and specific examples, which are intended to be illustrative and not limiting:
FIG. 1 is an electric heating defoaming device of the present invention, which comprises an inclined three-way pipe 8 and a condenser 9 connected to the upper end of the main pipe of the inclined three-way pipe 8, wherein the condenser 9 may be a tubular cooler; a liquid return pipe 10 connected with the lower end of the main pipe and a foam riser pipe 1 connected with an inclined three-way pipe 8 through a branch pipe; the liquid return pipe 10 is provided with a one-way valve 11; a first electric heating wire mesh 2 and a second electric heating wire mesh 3 are sequentially arranged in the foam rising pipe 1 from bottom to top, and preferably, insulating layers are coated outside the first electric heating wire mesh 2 and the second electric heating wire mesh 3; generally, the mesh number of the first electric heating wire mesh 2 and the mesh number of the second electric heating wire mesh 3 are 4-400 meshes, and the mesh number of the first electric heating wire mesh 2 can be set to be smaller than the mesh number of the second electric heating wire mesh 3. The first electric heating wire net 2 is connected with a first temperature controller 6 through a first sealing wiring hole 4 arranged on the pipe wall of the foam ascending pipe 1, and the second electric heating wire net 3 is connected with a second temperature controller 7 through a second sealing wiring hole 5 arranged on the pipe wall of the foam ascending pipe 1.
The working principle and the working method of the invention are as follows:
the working principle of the invention is completed on the basis of fully researching the structural property of the foam and the defoaming mechanism, the foam is an aggregate of the bubbles separated by the liquid film, so that the liquid film between the gases must be destroyed to release the gases in the bubbles to achieve the purpose of defoaming and defoaming when the foam is to be eliminated without adding a defoaming auxiliary agent, and the liquid film between the bubbles in the foam is vaporized by utilizing the high temperature of the electric heating wire net to eliminate the bubbles.
The working method of the device of the invention comprises the following steps: 1) selecting a first electric heating wire mesh 2 and a second electric heating wire mesh 3 with proper mesh numbers according to the sizes of bubbles in generated foam; 2) before foam is generated, the heating temperatures of the first electric heating wire mesh 2 and the second electric heating wire mesh 3 are respectively controlled by a first temperature controller 6 and a second temperature controller 7, so that the temperature of the electric heating wire meshes is higher than the boiling point of liquid in a bubble liquid film; 3) bubbles generated in the reaction vessel continuously rise through the foam rising pipe 1, the foam is firstly contacted with the first electric heating wire net 2, and as the temperature of the first electric heating wire net 2 is higher than the boiling point of a bubble liquid film, the liquid film is vaporized, the foam is broken, and the primary defoaming and defoaming purposes are achieved; 4) gas generated by vaporization of a foam liquid film on the first electric heating wire net 2 and a small amount of foam which is not eliminated continue to rise along with the foam rising pipe 1, when the foam which is not eliminated is contacted with the second electric heating wire net 3, the foam liquid film is vaporized due to the high temperature effect, and the foam which is not eliminated on the first electric heating wire net 2 is completely eliminated by the second electric heating wire net 3; 5) the gas generated by the vaporization of all the liquid films of the first electric heating wire mesh 2 and the second electric heating wire mesh 3 continuously rises and enters the condenser 9 through the inclined three-way pipe 8, and the gas vaporized by the liquid films is changed into condensed liquid under the condensation effect of the condenser 9; 6) the condensed liquid enters a liquid return pipe 10 with a one-way valve 11 (the function of the one-way valve is mainly to prevent the foam from entering the condenser through the liquid return pipe without passing through a foam riser pipe, thereby the purpose of defoaming and defoaming can not be achieved) through an inclined three-way pipe 8 under the action of self gravity, and then flows back to the original reaction container.
In some systems it is also possible to connect the foam riser 1 to an upstream device and the liquid return line 10 to a downstream device.
Selecting an electric heating wire mesh with a proper mesh number according to the size of bubbles in foam generated in the practical application process, wherein the comparison table of the specific bubble size and the mesh number of the electric heating wire mesh is shown in the following table:
comparison table of bubble size and mesh number of electric heating wire mesh
It should be noted that the above description is only a part of the embodiments of the present invention, and equivalent changes made to the system described in the present invention are included in the protection scope of the present invention. Persons skilled in the art to which this invention pertains may substitute similar alternatives for the specific embodiments described, all without departing from the scope of the invention as defined by the claims.
Claims (7)
1. An electric heating defoaming and defoaming device is characterized by comprising an inclined three-way pipe (8), a condenser (9) connected with the upper end of a main pipe of the inclined three-way pipe (8), and a liquid return pipe (10) connected with the lower end of the main pipe and a foam riser pipe (1) connected with a branch pipe of the inclined three-way pipe (8); the liquid return pipe (10) is provided with a one-way valve (11); a first electric heating wire mesh (2) and a second electric heating wire mesh (3) are sequentially arranged in the foam ascending pipe (1) from bottom to top, the first electric heating wire mesh (2) is connected with a first temperature controller (6), and the second electric heating wire mesh (3) is connected with a second temperature controller (7).
2. An electrothermal defoaming device according to claim 1, wherein the first electric heating wire net (2) and the second electric heating wire net (3) are externally coated with an insulating layer.
3. The electrothermal defoaming device according to claim 1, wherein the mesh number of the first electrothermal wire mesh (2) and the second electrothermal wire mesh (3) is 4-400 meshes.
4. An electrothermal defoaming device according to claim 1, wherein the mesh number of the first electric heating wire net (2) is smaller than that of the second electric heating wire net (3).
5. An electrothermal defoaming device according to claim 1, wherein the inner wall of the branch pipe of the inclined tee pipe (8) is provided with a condensation-proof layer.
6. An electrically heated defoaming device according to claim 1, characterized in that the condenser (9) is a tube cooler.
7. The working method of the electrothermal defoaming device according to any one of claims 1 to 6, comprising the following steps:
step 1: selecting a first electric heating wire mesh (2) and a second electric heating wire mesh (3) with matched meshes according to the sizes of bubbles in the foam;
step 2: before foam is generated, the temperature of the first electric heating wire mesh (2) and the temperature of the second electric heating wire mesh (3) are adjusted to be higher than the boiling point of the bubble liquid film through the first temperature controller (6) and the second temperature controller (7);
and step 3: the foam entering the device rises along the foam rising pipe (1), firstly contacts with the first electric heating wire net (2), the liquid film is vaporized, the foam is broken, the generated steam and the foam which is not eliminated continuously rise and then contact with the second electric heating wire net (3), and the generated steam enters the condenser (9) along the inclined three-way pipe (8) branch pipe;
and 4, step 4: after the steam is condensed into liquid by the condenser (9), the liquid flows out of the device along the liquid return pipe (10) through the one-way valve (11) under the action of gravity.
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| CN202010032562.XA CN111151032B (en) | 2020-01-13 | 2020-01-13 | Electric heating defoaming and defoaming device and working method thereof |
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| CN202010032562.XA CN111151032B (en) | 2020-01-13 | 2020-01-13 | Electric heating defoaming and defoaming device and working method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114059966A (en) * | 2020-08-10 | 2022-02-18 | 中国石油化工股份有限公司 | Defeated pipeline control by temperature change fire fighting equipment of collection and well head gas-liquid separation system |
| CN115414880A (en) * | 2022-08-05 | 2022-12-02 | 李志贤 | Production liquid closed filtering and defoaming device, control system and implementation method |
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| CN111151032B (en) | 2021-11-16 |
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