CN215924720U - Action device for performing hydrodynamic cavitation demulsification on dirty oil sludge - Google Patents
Action device for performing hydrodynamic cavitation demulsification on dirty oil sludge Download PDFInfo
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- CN215924720U CN215924720U CN202121413613.XU CN202121413613U CN215924720U CN 215924720 U CN215924720 U CN 215924720U CN 202121413613 U CN202121413613 U CN 202121413613U CN 215924720 U CN215924720 U CN 215924720U
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Abstract
The utility model relates to the technical field of oily sludge treatment, in particular to an action device for performing hydrodynamic cavitation demulsification on dirty oil sludge, which comprises an action device body, a water inlet, a water outlet and a stirrer, wherein the action device body is provided with a water inlet and a water outlet; the action device body is a cylindrical hollow pipe with two ends sealed by sealing plates, and a water inlet cavity, a cavitation device and a water outlet cavity are arranged in the action device body from left to right; the agitator is installed on the right side of the closing plate close to one side of the water inlet cavity with the same axle center of the action device body. The hydrodynamic cavitation demulsification device adopted by the utility model has the advantages of simple structure, simple and convenient operation and capability of quickly carrying out cavitation in large batch.
Description
Technical Field
The utility model relates to the technical field of oily sludge treatment, in particular to an action device for performing hydrodynamic cavitation demulsification on dirty oil sludge.
Background
The oil sludge is a main pollutant generated in the processes of oil exploitation, transportation, storage and transportation, and is characterized by large water content, complex components, more impurities and large processing difficulty. Generally, stable emulsion systems are composed of oil-in-water, water-in-oil, and solid suspensions, as well as various treatment agents used in the manufacturing process. The key point of oil-water separation of the dirty oil sludge is demulsification, which comprises chemical, biological and physical demulsification methods, and the chemical demulsification is mainly used in China at present and has the defect of large secondary pollution.
The physical demulsification mainly utilizes the cavitation of the emulsified liquid to achieve the purpose of demulsification. Ultrasonic methods are often used. The ultrasonic method has the advantages of no secondary pollution, but high technical difficulty, and the problem of insufficient demulsification or secondary emulsification commonly exists in the prior application.
Compared with ultrasonic cavitation, the hydrodynamic cavitation device is simple, low in cost, capable of generating large-scale cavitation fields, great in industrial application potential, and applied to the fields of sterilization, organic sewage and wastewater treatment, jet cleaning, chemical separation and the like.
Chinese patent document (publication No. CN 107162101 a) discloses a large flux hydrodynamic cavitation generator and a cavitation method based on a venturi tube 12-1, the generator includes: a cylindrical cavity; the fluid inlet pipes are uniformly arranged on the outer edge of the cylindrical cavity; the annular pore plate is coaxially arranged in the cylindrical cavity; chinese patent document (publication number: CN1241668C) discloses a vortex cavitator used in the technical field of chemical separation, which can carry out low-cost and high-efficiency demulsification treatment on water-containing emulsified oil or emulsified oil-containing wastewater under the conditions of low temperature and no or little addition of a chemical demulsifier. Chinese patent document (publication number: CN202440361U) discloses a hydrodynamic cavitation device for sewage and wastewater treatment, which is provided with a plurality of cavitation channels and has high cavitation efficiency. Ozone can be introduced into the cavitation cavity, and can be decomposed into hydroxyl radicals with stronger oxidability under the condition of high temperature and high pressure generated by the hydrodynamic cavitation effect, so that the cavitation efficiency is further improved. Catalysts TiO2 and gamma-Al 2O3 can be arranged in the device to generate more hydroxyl radicals, so that the removal effect of organic matters in the sewage and the wastewater is further enhanced.
However, the existing hydrodynamic cavitation device has the defects of small cavitation area, low cavitation intensity, low cavitation falling and collapse frequency and the like in the demulsification of the greasy dirt, and the defects cause insufficient cavitation reaction and generally lower cavitation efficiency.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: aiming at the defects, the device has the advantages of simple structure and higher cavitation efficiency and is used for performing hydrodynamic cavitation demulsification on the greasy dirt.
The specific scheme is as follows:
an action device for performing hydrodynamic cavitation demulsification on dirty oil sludge comprises an action device body, a water inlet, a water outlet and a stirrer; the action device body is a cylindrical hollow pipe with two ends sealed by sealing plates, and a water inlet cavity, a cavitation device and a water outlet cavity are arranged in the action device body from left to right;
the agitator is installed on the right side of the closing plate close to one side of the water inlet cavity with the same axle center of the action device body.
Furthermore, the water inlet is a cylindrical hollow pipe and is inserted into the water inlet cavity at the position close to one sealing plate on one side along the tangential direction of the circumference of the water inlet cavity;
the water outlet is a cylindrical hollow pipe, and the water outlet cavity is inserted into the position close to the sealing plate on the other side along the tangential direction of the circumference of the water outlet cavity.
Further, the cavitation device employs a venturi.
Further, the cavitation device adopts an orifice plate.
Further, the stirrer adopts a screw.
Further, the stirrer adopts a static mixer.
Further, the closing plate is a curved surface end socket with a pot bottom shape or a plane end socket with a flat bottom shape.
Compared with the traditional technical scheme, the technical scheme of the utility model has the advantages that:
1. the hydrodynamic cavitation demulsification device adopted by the utility model has the advantages of simple structure, simple and convenient operation and capability of quickly carrying out cavitation in large batch.
2. The utility model adds the stirrer before the cavitation, so that the emulsion which is about to enter the emulsion breaking process is uniformly distributed, and the subsequent cavitation emulsion breaking process can be more rapid and sufficient.
3. The water inlet and the water outlet are respectively tangentially arranged on the circumferences of the water inlet cavity and the water outlet cavity, so that the kinetic energy of the emulsion entering and exiting can be effectively ensured to be fully released, and the stirring effect of the stirrer can be effectively promoted particularly at the position of the water inlet cavity.
Drawings
The foregoing and other objects, features, and advantages of the utility model will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic structural diagram of patent example 1 of the present invention;
FIG. 2 is a right side view of the right side closure plate of FIG. 1 with the closure plate open;
FIG. 3 is a schematic structural diagram of patent example 2 of the present invention;
FIG. 4 is a schematic structural diagram of patent example 3 of the present invention;
fig. 5 is a right side view of the right side closure plate of fig. 4 with the closure plate open.
Wherein:
1. the device comprises an action device body, 11 parts of a water inlet cavity, 12 parts of a cavitation device, 12-1 parts of a venturi tube, 12-2 parts of a throttle orifice plate, 13 parts of a water outlet cavity, 14 parts of a sealing plate, 2 parts of a water inlet, 3 parts of a water outlet, 4 parts of a stirrer, 4-1 parts of a screw and 4-2 parts of a static mixer.
Detailed Description
In light of the foregoing description of preferred embodiments of the utility model, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
The utility model will be further illustrated with reference to the following figures:
example 1:
referring to fig. 1-2, an action device for performing hydrodynamic cavitation demulsification on dirty oil sludge comprises an action device body 1, a water inlet 2, a water outlet 3 and a stirrer 4; the action device body 1 is a cylindrical hollow pipe with two ends sealed by sealing plates 14, and a water inlet cavity 11, a cavitation device 12 and a water outlet cavity 13 are arranged in the action device body 1 from left to right; the stirrer 4 and the action device body 1 are coaxially arranged on the right side of the closing plate 14 close to one side of the water inlet cavity 11. The water inlet 2 is a cylindrical hollow pipe, and is inserted into the water inlet cavity 11 at a position close to one side sealing plate 14 along the tangential direction of the circumference of the water inlet cavity 11; the water outlet 3 is a cylindrical hollow pipe and is inserted into the water outlet cavity 13 at a position close to the other side closing plate 14 along the tangential direction of the circumference of the water outlet cavity 13. The cavitation device 12 employs a venturi tube 12-1. The stirrer 4 is a screw 4-1. The end socket is a plane end socket with a flat bottom shape.
In this embodiment, the venturi tube 12-1 is a hollow tube with a cylindrical shape, the left side is a convergent bell mouth gradually narrowing to the right, the right side is an amplified bell mouth gradually enlarging to the right, and the middle is a cylindrical through tube.
The mechanism of hydrodynamic cavitation generation in this example is:
hydrodynamic cavitation occurs in many situations, for example in pipes with sharp changes in pipe diameter, in hydraulic machines, etc. This is because liquids typically contain tiny bubbles that are normally invisible to the naked eye, which expand rapidly as the liquid flows through the low pressure zone, where they form visible tiny cavitation bubbles. The liquid cavitated in the low pressure zone carries a large amount of cavitation bubbles to form a two-phase flow motion. When the cavitation bubbles flow along with the liquid, the volume of the cavitation bubbles is rapidly reduced or collapsed when the ambient pressure is increased, and the collapse process occurs in an instant (microsecond level), so that various extremely complex physical and chemical effects are accompanied when the cavitation bubbles collapse.
With respect to the particular environment in which cavitation collapse occurs, relevant studies have shown that cavitation collapse generates transient localized high temperatures of about 5000 ℃ and high pressures (above 50 MPa), i.e., so-called "hot spots" are formed, and can form intense shock waves and microjets with velocities greater than 400 km/h.
The working principle of the embodiment is briefly described as follows:
when fluid flows through a venturi tube 12-1, the flow velocity of the liquid is increased and the pressure is reduced due to the flow choking effect of the narrowing middle section of the venturi tube 12-1, when the pressure is reduced to steam pressure or even negative pressure, gas dissolved in the fluid is released, meanwhile, the fluid is vaporized to generate a large amount of cavitation bubbles, then, the pressure around the liquid is rapidly recovered to jet and expand, and the cavitation bubbles are instantly destroyed, so that cavitation is generated.
In the utility model, fewer parts are used, the structure is simpler, and the operation and the maintenance are easy.
In addition, in the utility model, the insertion angle of the water inlet 2 is inserted along the tangential direction of the water inlet cavity 11, and the emulsion flows along the inner shape of the water inlet cavity 11 after entering the water inlet cavity 11, so that the kinetic energy loss caused by wall collision is reduced, and the cavitation efficiency is high.
Example 2:
referring to fig. 3, the closing plate 14 is a curved end plate in the shape of a pan bottom, and the other structure is the same as that of embodiment 1.
Example 3:
referring to fig. 4-5, the venturi tube 12-1 of example 1 was replaced with an orifice 12-2 and the auger 4-1 was replaced with a static mixer 4-2, and the obtained effects were consistent with those of example 1.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides an effect device of hydrodynamic cavitation breakdown of emulsion is carried out dirty oil sludge which characterized in that: comprises an action device body (1), a water inlet (2), a water outlet (3) and a stirrer (4); the action device body (1) is a cylindrical hollow pipe with two ends sealed by sealing plates (14), and a water inlet cavity (11), a cavitation device (12) and a water outlet cavity (13) are arranged in the action device body from left to right;
the stirrer (4) and the action device body (1) are coaxially arranged on the right side close to the sealing plate (14) on one side of the water inlet cavity (11).
2. The device for performing hydrodynamic cavitation demulsification on the dirty oil sludge as claimed in claim 1, wherein: the water inlet (2) is a cylindrical hollow pipe, and is inserted into the water inlet cavity (11) at a position close to one side sealing plate (14) along the tangential direction of the circumference of the water inlet cavity (11);
the water outlet (3) is a cylindrical hollow pipe, and is inserted into the water outlet cavity (13) at the position close to the other side sealing plate (14) along the tangential direction of the circumference of the water outlet cavity (13).
3. The device for performing hydrodynamic cavitation demulsification on the dirty oil sludge as claimed in claim 1, wherein: the cavitation device (12) adopts a Venturi tube (12-1).
4. The device for performing hydrodynamic cavitation demulsification on the dirty oil sludge as claimed in claim 1, wherein: the cavitation device (12) adopts a throttling orifice plate (12-2).
5. The device for performing hydrodynamic cavitation demulsification on the dirty oil sludge as claimed in claim 1, wherein: the stirrer (4) adopts a screw (4-1).
6. The device for performing hydrodynamic cavitation demulsification on the dirty oil sludge as claimed in claim 1, wherein: the stirrer (4) adopts a static mixer (4-2).
7. The device for performing hydrodynamic cavitation demulsification on the dirty oil sludge as claimed in claim 1, wherein: the closing plate (14) is a curved surface end socket with a pot bottom shape or a plane end socket with a flat bottom shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202121413613.XU CN215924720U (en) | 2021-06-24 | 2021-06-24 | Action device for performing hydrodynamic cavitation demulsification on dirty oil sludge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121413613.XU CN215924720U (en) | 2021-06-24 | 2021-06-24 | Action device for performing hydrodynamic cavitation demulsification on dirty oil sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116589028A (en) * | 2023-06-09 | 2023-08-15 | 浙江路弘科技有限公司 | Hydrodynamic cavitation generator and cavitation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116589028A (en) * | 2023-06-09 | 2023-08-15 | 浙江路弘科技有限公司 | Hydrodynamic cavitation generator and cavitation method |
| CN116589028B (en) * | 2023-06-09 | 2024-02-20 | 浙江路弘科技有限公司 | Hydrodynamic cavitation generator and cavitation method |
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