High-viscosity acid environment mixing automatic defoaming device and use method

Abstract

The invention discloses a high-viscosity acid environment mixing automatic defoaming device and a use method. The high-viscosity acid environment mixing automatic defoaming device comprises a buffer tank, a liquid inlet and a liquid outlet are formed in the bottom of the buffer tank, a foam breaking mechanism is arranged in the buffer tank, a foam collecting device is further arranged in the buffer tank, and the buffer tank is connected with a liquid level bubble detection device; the bubble collecting device comprises a first bubble blowing machine and a second bubble blowing machine, the first bubble blowing machine is located on the side edge of the top of the buffer tank, and the second bubble blowing machine and the first bubble blowing machine are oppositely arranged; the liquid level bubble detection device comprises a U-shaped pipe liquid level meter, a first liquid level sensor and a radar liquid level sensor, the bottom of the U-shaped pipe liquid level meter is communicated with the bottom of the buffer tank, the first liquid level sensor is arranged at the top of the U-shaped pipe liquid level meter, and the radar liquid level sensor is arranged on the top wall of the buffer tank. According to the method, bubbles generated in the operation process of preparing the high-viscosity liquid can be eliminated in time, the waiting time for natural decomposition is saved, the quality of the high-viscosity liquid is not affected, and the risk of tank overflowing is avoided.

Description

Technical Field

[0001] This invention relates to the field of defoaming device technology, specifically to an automatic defoaming device for mixing in high-viscosity acidic environments and its usage method. Background Technology

[0002] During the preparation of high-viscosity fluids at the oilfield site, air may be introduced. At the same time, a large number of bubbles may be generated when slow-release synergists are added. These bubbles are difficult to eliminate automatically and will accumulate, causing tank overflow and environmental incidents.

[0003] Compared with conventional bubbles, high-viscosity liquid systems produce larger, denser, and more difficult-to-eliminate foams with indistinct liquid surface boundaries. Therefore, it is necessary to invent an automatic defoaming device for mixing high-viscosity acidic environments that can automatically eliminate bubbles generated during the preparation of high-viscosity liquids, avoid the risk of overflow, improve the preparation efficiency of acid solutions, and eliminate the time spent on ineffective motor operation without affecting the quality of high-viscosity liquids, while also eliminating the waiting time for natural decomposition.

[0004] Publication number CN118496972A discloses an automatic defoaming device for citric acid fermentation. The starting motor can drive the stirring tube to rotate, and the rotation of the stirring tube can stir the bubbles, thereby accelerating the speed of bubble destruction. By stirring the stirring tube at a constant low temperature, not only is the large-scale generation of bubbles prevented, but the existing bubbles can also be destroyed, thus improving the defoaming effect.

[0005] Announcement No. CN211274642U discloses a 2,3-pyridine dicarboxylic acid reactor with automatic defoaming function, which is equipped with a defoamer and a level gauge. The defoamer and the level gauge control system are interlocked to automatically eliminate the foam generated during the oxidation of quinoline and prevent foam from overflowing the reactor.

[0006] Publication No. CN118356689A discloses a lysine production device with a defoaming structure. During the rotation of defoaming tube 1 and defoaming tube 2, the bubbles present in the production material are squeezed, and the gas in the bubbles is discharged from the rigid conduit at the upper end of defoaming tube 1 and defoaming tube 2, thereby reducing the gas content in the production material. During the rotation of defoaming tube 1 and defoaming tube 2, the rotation of the rotating ring can prevent the defoaming holes from becoming blocked, and can also accelerate the flow rate of the production material at the defoaming hole position, thereby improving the defoaming efficiency.

[0007] The substances that generate bubbles in the aforementioned existing technologies are weakly acidic or weakly alkaline, which are not suitable for the strong bubbles generated in high-viscosity environments. At the same time, they cannot automatically monitor the amount of foam and defoam in a timely manner.

[0008] In summary, the technical solutions, technical problems to be solved, and beneficial effects of the above-disclosed technologies are all different from those of the present invention. Regarding the more technical features, technical problems to be solved, and beneficial effects of the present invention, the above-disclosed technical documents do not provide any technical inspiration. Summary of the Invention

[0009] In view of the above-mentioned defects in the existing technology, the purpose of this invention is to provide an automatic defoaming device and its usage method for mixing in high-viscosity acidic environments.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] On one hand, the present invention provides an automatic defoaming device for mixing in a high-viscosity acidic environment, including a buffer tank. The bottom of the buffer tank is provided with an inlet and a outlet. The buffer tank is provided with a foam breaking mechanism and a foam collecting device. The buffer tank is connected to a liquid level bubble detection device. The foam collecting device includes a first bubble blower and a second bubble blower. The first bubble blower is located on the top side of the buffer tank, and the second bubble blower is arranged opposite to the first bubble blower. The liquid level bubble detection device includes a U-tube level gauge, a first liquid level sensor, and a radar liquid level sensor. The bottom of the U-tube level gauge is connected to the bottom of the buffer tank. The first liquid level sensor is located on the top of the U-tube level gauge, and the radar liquid level sensor is located on the top wall of the buffer tank.

[0012] Furthermore, the bubble-breaking mechanism includes a primary bubble-breaking mechanism and a secondary bubble-breaking mechanism;

[0013] Specifically, the primary bubble-breaking mechanism includes a bubble-breaking tube, which is connected to the liquid inlet inside the buffer tank. The bubble-breaking tube is provided with an inclined bubble-breaking nail with its sharp corner facing the liquid inlet, and an outlet is provided at the end of the bubble-breaking tube away from the liquid inlet.

[0014] Specifically, the secondary bubble-breaking mechanism includes a first motor and a second motor. Both the first motor and the second motor are located at the top of the buffer tank. The output shaft of the first motor is inserted into the buffer tank and connected to the first impeller. The output shaft of the second motor is inserted into the buffer tank and connected to the second impeller. Bubble-breaking spikes are provided around the blades of both the first impeller and the second impeller.

[0015] Furthermore, the angle between the bubble-breaking nail and the wall of the bubble-breaking tube is 30°-60°; the bubble-breaking nail is a cone, and the cone angle of the bubble-breaking nail is 10°-20°.

[0016] Furthermore, the bubble-breaking tube is a coil.

[0017] Furthermore, the bubble-breaking tube is a straight tube, and at least two are provided; the number of liquid inlets and liquid outlets is the same as that of the bubble-breaking tube.

[0018] Furthermore, the first impeller and the second impeller rotate in opposite directions; the bubble-breaking spike is a cone with a cone angle of 10°-20°.

[0019] Furthermore, the radar level sensor is located between the first impeller and the second impeller, and the radar level sensor is arranged on the line of symmetry between the first bubble blower and the second bubble blower.

[0020] Furthermore, the air outlet of the first or second bubble blower is a right-angled trapezoidal air outlet, and the air outlet angle of the right-angled trapezoidal air outlet is 45°-60°.

[0021] Secondly, the present invention provides a method for using an automatic defoaming device for mixing in a high-viscosity acidic environment. Using the automatic defoaming device for mixing in a high-viscosity acidic environment as described in this aspect includes the following steps:

[0022] First, the acid solution undergoes preliminary defoaming in the defoaming tube after passing through the inlet before entering the buffer tank, thus minimizing the generation of bubbles.

[0023] Then, the liquid level value is measured by the radar liquid level sensor and the first liquid level sensor respectively. The radar liquid level sensor measures the liquid level in the buffer tank, which is affected by air bubbles. The first liquid level sensor measures the liquid level of the U-tube liquid level gauge, which is the true liquid level and is not affected by air bubbles.

[0024] When the two liquid level values ​​are detected to be inconsistent, the first bubble blower and the second bubble blower blow the bubbles from both sides to the middle of the buffer tank, and the first motor and the second motor start to perform mechanical defoaming. The speed of the motor is automatically adjusted according to the size of the liquid level difference.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. This invention can promptly eliminate air bubbles generated during the preparation of high-viscosity liquids, saving the time of natural decomposition, without affecting the quality of the high-viscosity liquid, and avoiding the risk of overflow.

[0027] 2. After the acid enters the buffer tank, it passes through the defoaming tube and then enters the interior of the buffer tank. Automatic mechanical defoaming can be performed inside the buffer tank, which not only prevents the generation of a large number of bubbles, but also destroys existing bubbles, thus improving the defoaming effect.

[0028] 3. The first and second bubble blowers can blow bubbles toward the middle of the buffer tank, so that the secondary bubble breaking mechanism can defoam in time. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an automatic defoaming device for mixing in a high-viscosity acidic environment according to the present invention;

[0030] Figure 2 This is a schematic diagram of the bubble-breaking tube in Embodiment 1 of the present invention;

[0031] Figure 3 This is a schematic diagram of the bubble-breaking tube in Embodiment 3 of the present invention;

[0032] Figure 4 This is a schematic diagram of the internal structure of the bubble-breaking tube in this invention;

[0033] Figure 5 This is a schematic diagram of the blade structure in this invention;

[0034] Figure 6 This is a top view of Embodiment 1 of the present invention;

[0035] Figure 7 This is a top view of Embodiment 3 of the present invention;

[0036] Figure 8 This is a top view of Embodiment 4 of the present invention.

[0037] In the diagram: 1. Buffer tank; 2. U-tube level gauge; 3. First level sensor; 4. Radar level sensor; 5. First motor; 6. First impeller; 7. Second motor; 8. Second impeller; 9. First bubble blower; 10. Second bubble blower; 11. Bubble breaking tube; 12. Inlet; 13. Outlet; 14. Drain; 15. Bubble breaking nail; 16. Blade; 17. Bubble breaking spike. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1:

[0040] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 The present invention provides an automatic defoaming device for mixing in a high-viscosity acidic environment, comprising a buffer tank 1, wherein the bottom of the buffer tank 1 is provided with a liquid inlet 12 and a liquid outlet 14, the buffer tank 1 is provided with a primary defoaming mechanism, the top of the buffer tank 1 is provided with a secondary defoaming mechanism and a foam collecting device, and the buffer tank 1 is connected to a liquid level and bubble detection device.

[0041] The primary bubble-breaking mechanism includes a bubble-breaking tube 11, which is connected to the inlet 12 inside the buffer tank 1. An inclined bubble-breaking nail 15 with a sharp corner facing the inlet 11 is provided inside the bubble-breaking tube 11, and an outlet 13 is provided at the end of the bubble-breaking tube 11 away from the inlet 12.

[0042] Specifically, the angle between the bubble-breaking nail 15 and the tank wall of the bubble-breaking tube 11 is 30°-60°; the bubble-breaking nail 15 is a cone with a cone angle of 10°-20°, giving the bubble-breaking nail 15 good bubble-breaking performance.

[0043] In this embodiment, the bubble-breaking tube 11 is a coil with a long path, which can fully break the bubbles in the incoming liquid.

[0044] The secondary bubble-breaking mechanism includes a first motor 5 and a second motor 7. Both the first motor 5 and the second motor 7 are located at the top of the buffer tank 1. The output shaft of the first motor 5 is inserted into the buffer tank 1 and is connected to the first impeller 6 inside the buffer tank 1. The output shaft of the second motor 7 is inserted into the buffer tank 1 and is connected to the second impeller 8 inside the buffer tank 1. Bubble-breaking spikes 17 are provided around the blades 16 of both the first impeller 6 and the second impeller 8 to break bubbles.

[0045] Specifically, the first impeller 6 and the second impeller 8 rotate in opposite directions, so that the two impellers can better concentrate the bubbles towards the center of the buffer tank 1. The first impeller 6 and the second impeller 8 can suck in the bubbles generated by the high viscosity liquid in the tank, and break the bubbles into liquid through centrifugal force and bubble-breaking spikes 17, which then flow into the tank.

[0046] Specifically, the bubble-breaking spike 17 is a cone with a cone angle of 10°-20°, giving it good bubble-breaking performance.

[0047] In this embodiment, the first motor 5 and the second motor 7 are both mounted on the upper end face of the top wall of the buffer tank 1. The first motor 5 and the second motor 7 are both vertically mounted, and the first impeller 6 and the second impeller 8 rotate around the vertical axis. This arrangement provides a larger bubble-breaking area.

[0048] The liquid level bubble detection device includes a U-tube level gauge 2, a first liquid level sensor 3, and a radar level sensor 4. The bottom of the U-tube level gauge 2 is connected to the bottom of the buffer tank 1. The first liquid level sensor 3 is installed on the top of the U-tube level gauge 2 to detect the liquid level of the U-tube level gauge 2 in real time. The radar level sensor 4 is installed on the top wall of the buffer tank 1 and is located between the first impeller 6 and the second impeller 8.

[0049] Specifically, the first liquid level sensor 3 can be a capacitive liquid level gauge, an ultrasonic liquid level gauge, a magnetostrictive liquid level gauge, or other liquid level gauge that can be used in conjunction with the U-tube liquid level gauge 2.

[0050] Specifically, the U-tube level gauge 2 includes a U-tube and a first pressure tube and a second pressure tube connected to both ends of the U-tube. The first pressure tube is connected to the bottom of the buffer tank 1, and a first level sensor 3 is installed at the top of the second pressure tube. When the liquid level rises, the pressure of the liquid on the first pressure tube increases, causing the liquid level in the U-tube to rise. When the liquid level falls, the pressure of the liquid on the first pressure tube decreases, causing the liquid level in the U-tube to fall. By measuring the change in the liquid level in the U-tube through the second pressure tube, the liquid level height can be determined.

[0051] The bubble collection device includes a first bubble blower 9 and a second bubble blower 10. The first bubble blower 9 is located on the top side of the buffer tank 1, and the second bubble blower 10 is arranged opposite to the first bubble blower 9. The air outlet of the first bubble blower 9 or the second bubble blower 10 is a right-angled trapezoidal air outlet, which can concentrate the bubbles in the buffer tank 1 towards the symmetrical line of the first bubble blower 9 and the second bubble blower 10.

[0052] Specifically, the radar level sensor 4 is positioned on the symmetrical line between the first bubble blower 9 and the second bubble blower 10.

[0053] Specifically, the air outlet angle of the right-angled trapezoidal air outlet is 45°-60°, and the air pressure forces the air bubbles directly below out and then blows them to the center of the buffer tank 1.

[0054] In this embodiment, the first bubble blower 9 and the second bubble blower 10 are disposed on the side of the top wall of the buffer tank 1.

[0055] In this embodiment, the top wall of the buffer tank 1 is sequentially provided with a first bubble blower 9, a first motor 5, a radar level sensor 4, a second motor 7, and a second bubble blower 10. The radar level sensor 4 is located at the center of the buffer tank 1, and the first motor 5 and the second motor 7 are located on the line of symmetry of the buffer tank 1.

[0056] It should be noted that the first liquid level sensor 3, the radar liquid level sensor 4, the first motor 5, the second motor 7, the first bubble blower 9, and the second bubble blower 10 are all existing technologies that can be purchased and are controlled by a programmable controller (PLC). This is clear to those skilled in the art.

[0057] Among them, the first liquid level sensor 3 and the radar liquid level sensor 4 can transmit the liquid level data of the tank to the programmable controller in real time; the programmable controller is set with the opening and closing liquid level values ​​of the first motor 5, the second motor 7, the first bubble blower 9, and the second bubble blower 10, and controls the opening and closing of the first motor 5, the second motor 7, the first bubble blower 9, and the second bubble blower 10 in real time according to the liquid level data transmitted by the liquid level sensor.

[0058] It should be noted that the air pressure balance hole of the buffer tank 1 itself, the bearings and other auxiliary components connected to the output shaft are existing technologies, which are clear to those skilled in the art, and therefore will not be discussed further.

[0059] Example 2:

[0060] Based on Example 1, this example provides a method for using an automatic defoaming device for mixing in a high-viscosity acidic environment, specifically including the following steps:

[0061] First, the acid solution undergoes preliminary defoaming in the defoaming tube 11 after passing through the inlet 12 before entering the buffer tank, thus minimizing the generation of bubbles.

[0062] Then, the liquid level values ​​are measured by the radar liquid level sensor 4 and the first liquid level sensor 3 respectively. The radar liquid level sensor 4 measures the liquid level in the buffer tank 1, which is affected by air bubbles. The first liquid level sensor 3 measures the liquid level of the U-tube liquid level gauge 2, which is the true liquid level and is not affected by air bubbles.

[0063] When the two liquid level values ​​are detected to be inconsistent, the first bubble blower 9 and the second bubble blower 10 blow the bubbles on both sides to the middle of the buffer tank 1, and the first motor 5 and the second motor 7 start to perform mechanical defoaming. The speed of the motor is automatically adjusted according to the size of the liquid level difference.

[0064] Example 3:

[0065] Based on Example 1, as follows Figure 3 , Figure 7 As shown, in this embodiment, the first bubble blower 9 and the second bubble blower 10 are symmetrically distributed with the line connecting the first motor 5 and the second motor 7 as the line of symmetry. It can also be combined with the scheme in Embodiment 1 to achieve circumferential bubble blowing, preventing bubbles from contacting the wall of the buffer tank 1.

[0066] In this embodiment, the bubble-breaking tube 11 is a straight tube, and at least two are provided. The number of liquid inlets 14 and liquid outlets 14 is the same as that of the bubble-breaking tube 11. By increasing the number, the upper limit of the acid injection volume and the upper limit of the discharge volume are increased.

[0067] Example 4:

[0068] Based on Example 1, as follows Figure 8As shown, in this embodiment, the first motor 5 and the second motor 7 are disposed on the upper end of the front side wall of the buffer tank 1, the first impeller 6 and the second impeller 8 are vertically disposed in the buffer tank 1, the first impeller 6 and the second impeller 8 are located on the line of symmetry of the buffer tank 1, the first bubble blower 9 is disposed on the upper end of the left side wall of the buffer tank 1, and the second bubble blower 10 is disposed opposite to the first bubble blower 9.

[0069] The vertical first impeller 6 and second impeller 8 can further concentrate the bubbles towards the center of the buffer tank 1, and the high-level bubbles will be broken more efficiently by the bubble-breaking spikes 17, and the radar level sensor 4 can better judge the bubble situation in the buffer tank 1.

[0070] All components not discussed in detail in this application, as well as the connection methods of these components, are well-known technologies in this field. They can be directly applied and will not be elaborated further.

[0071] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0072] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0073] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-viscosity acid environment mixing automatic defoaming device, comprising a buffer tank, a liquid inlet and a liquid outlet are arranged at the bottom of the buffer tank, and a bubble breaking mechanism is arranged on the buffer tank, characterized in that, The buffer tank is also equipped with a bubble collection device, and the buffer tank is connected to a liquid level bubble detection device. The bubble collection device includes a first bubble blower and a second bubble blower. The first bubble blower is located on the top side of the buffer tank, and the second bubble blower is arranged opposite to the first bubble blower. The liquid level bubble detection device includes a U-tube level gauge, a first liquid level sensor, and a radar level sensor. The bottom of the U-tube level gauge is connected to the bottom of the buffer tank. The first liquid level sensor is located at the top of the U-tube level gauge, and the radar level sensor is located on the top wall of the buffer tank.

2. The automatic defoaming device for mixing in high-viscosity acidic environments according to claim 1, characterized in that, The bubble-breaking mechanism includes a primary bubble-breaking mechanism and a secondary bubble-breaking mechanism; The primary bubble-breaking mechanism includes a bubble-breaking tube, which is connected to the liquid inlet inside the buffer tank. An inclined bubble-breaking nail with a sharp corner facing the liquid inlet is provided inside the bubble-breaking tube, and an outlet is provided at the end of the bubble-breaking tube away from the liquid inlet. The secondary bubble-breaking mechanism includes a first motor and a second motor. Both the first motor and the second motor are located at the top of the buffer tank. The output shaft of the first motor is inserted into the buffer tank and connected to the first impeller. The output shaft of the second motor is inserted into the buffer tank and connected to the second impeller. Bubble-breaking spikes are provided around the blades of both the first impeller and the second impeller.

3. The automatic defoaming device for mixing in a high-viscosity acidic environment according to claim 2, characterized in that, The angle between the bubble-breaking nail and the wall of the bubble-breaking tube is 30°-60°; the bubble-breaking nail is a cone, and the cone angle of the bubble-breaking nail is 10°-20°.

4. The automatic defoaming device for mixing in high-viscosity acidic environments according to claim 2, characterized in that, The bubble-breaking tube is a coil.

5. The automatic defoaming device for mixing in a high-viscosity acidic environment according to claim 2, characterized in that, The bubble-breaking tube is a straight tube, and at least two are provided; the number of liquid inlets and liquid outlets is the same as that of the bubble-breaking tubes.

6. The automatic defoaming device for mixing in a high-viscosity acidic environment according to claim 2, characterized in that, The first impeller and the second impeller rotate in opposite directions; the bubble-breaking spike is a cone with a cone angle of 10°-20°.

7. The automatic defoaming device for mixing in a high-viscosity acidic environment according to claim 2, characterized in that, The radar level sensor is located between the first impeller and the second impeller, and the radar level sensor is arranged on the line of symmetry between the first bubble blower and the second bubble blower.

8. The automatic defoaming device for mixing in high-viscosity acidic environments according to claim 1, characterized in that, The air outlet of the first or second bubble blower is a right-angled trapezoidal air outlet, and the air outlet angle of the right-angled trapezoidal air outlet is 45°-60°.

9. A method of using an automatic defoaming device for mixing in a high-viscosity acidic environment, characterized in that, The automatic defoaming device for mixing high-viscosity acidic environments as described in claim 2 includes the following steps: First, the acid solution undergoes preliminary defoaming in the defoaming tube after passing through the inlet before entering the buffer tank, thus minimizing the generation of bubbles. Then, the liquid level value is measured by the radar liquid level sensor and the first liquid level sensor respectively. The radar liquid level sensor measures the liquid level in the buffer tank, which is affected by air bubbles. The first liquid level sensor measures the liquid level of the U-tube liquid level gauge, which is the true liquid level and is not affected by air bubbles. When the two liquid level values ​​are detected to be inconsistent, the first bubble blower and the second bubble blower blow the bubbles from both sides to the middle of the buffer tank, and the first motor and the second motor start to perform mechanical defoaming. The speed of the motor is automatically adjusted according to the size of the liquid level difference.

Images