CN109224891B

CN109224891B - Industrial application grade method for quickly dissolving gas

Info

Publication number: CN109224891B
Application number: CN201811293515.XA
Authority: CN
Inventors: 秦积舜
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-01
Filing date: 2018-11-01
Publication date: 2021-02-12
Anticipated expiration: 2038-11-01
Also published as: CN109224891A

Abstract

The invention provides a method for quickly dissolving gas in an industrial application grade, which comprises the following steps: injecting water into the pipeline; then, gas is injected into the pipe for injecting water, and the size of bubbles of the injected gas is controlled to be 400 μm or less. The present invention allows the injected water to reach a saturated dissolved gas state before reaching the wellhead.

Description

Industrial application grade method for quickly dissolving gas

Technical Field

The invention relates to the field of oilfield development, in particular to a method for quickly dissolving gas in an industrial application level.

Background

In the field of oil development, water injection development of low-permeability oil reservoirs faces a plurality of problems, wherein injected water is difficult to enter tiny pores, swept volume is small, and extraction degree is not high. An effective method is gas injection development, and utilizes the characteristic of low gas seepage resistance to make gas enter small pores to improve the extraction degree, but the gas flooding mode often encounters the condition of flow channeling along a high-permeability channel, so that the efficiency of gas flooding is poor.

The advantages of the two modes are combined, namely, a large amount of dissolved gas is injected into water, so that the dissolved gas is gradually separated out along with the gradual reduction of pressure in the seepage process, the oil displacement by gas and water is realized, and the oil displacement efficiency is improved. The method is characterized in that when the working pressure between the injection well and the production well is fixed, the injected water with a large amount of dissolved gas seeps along a larger channel, along with the reduction of the seepage pressure, bubbles separated out from the water generate a Jamin effect, the seepage speed of the injected water in the larger channel is limited, and the injected water is forced to flow into a smaller channel. With the continuous reduction of the seepage pressure, the 'forcing' process continuously occurs, the injected water is forced to continuously seep into smaller pores, the swept volume of the injected water is enlarged, and therefore the oil displacement efficiency is improved. This method has been validated in the laboratory for its theoretical principles and is theoretically feasible, but for industrial applications it is currently impossible to rapidly dissolve gas into flowing injection water.

In summary, the following problems exist in the prior art: at present, in industrial applications, it is not possible to dissolve the gas quickly into the flowing injection water.

Disclosure of Invention

The invention provides a method for quickly dissolving gas in industrial application grade, which aims to solve the problem that the gas cannot be quickly dissolved into flowing injection water in the industrial application at present.

To this end, the invention proposes a method for the rapid dissolution of gases in industrial applications, also known as industrial applications dissolved gases method or gas dissolution method, comprising:

injecting water into the pipeline;

then injecting gas into the pipeline for injecting water, controlling the size of bubbles of the injected gas to be less than 400 μm, and enabling the pressure of the injected gas to be 0.2-0.5MPa greater than the pressure in the pipeline for injecting water.

The industrial application grade rapid dissolved gas method further comprises: and discharging undissolved gas in the pipeline filled with water.

The industrial application grade rapid gas dissolving method adopts an industrial application grade rapid gas dissolving device, and the industrial application grade rapid gas dissolving device comprises:

at least one dissolved air pipe, the dissolved air pipe is U type pipe, the dissolved air pipe includes: the device comprises a first straight pipe, a second straight pipe and a top bent pipe, wherein the first straight pipe and the second straight pipe are vertically arranged and are parallel to each other, and the top bent pipe is connected between the top of the first straight pipe and the top of the second straight pipe; the first straight pipe, the top bent pipe and the second straight pipe are communicated with each other; the first straight pipe, the top bent pipe and the second straight pipe are used for containing injected water;

the top of the top elbow is provided with a slot;

the gas dissolving pipe further comprises:

the top transverse pipe is connected to the top bent pipe; the top transverse pipe is tubular and is horizontally arranged; the inner cavity of the top transverse tube is communicated with the open groove;

the flat plate with the hole covers the open groove and is connected between the top bent pipe and the top transverse pipe;

the liquid level sensor is used for monitoring a flat plate with a hole and is arranged in the inner cavity of the top transverse pipe;

the exhaust valve is arranged at the top of the top transverse pipe;

the gas injection pipeline is connected to the bottoms of the first straight pipe and the second straight pipe;

the gas mixing device is positioned at the bottom of the first straight pipe and positioned at the downstream of the gas injection pipeline, and comprises: the filter disc is provided with a plurality of uniform pores, and the pore diameter of the filter disc is 5-10 mu m;

and the water injection pipeline is connected to the bottom of the first straight pipe.

Further, the industrial application grade fast dissolved gas apparatus comprises: a plurality of vertical settings and the gas dissolving pipe that connects gradually, a plurality of gas dissolving pipe' S horizontal projection is the S type, the quick gas dissolving device of industrial application level still includes: the bottom bent pipe is connected to the bottoms of the two adjacent gas dissolving pipes and is connected between the two adjacent gas dissolving pipes.

Further, the industrial application grade rapid dissolved gas apparatus further comprises: and the gas pressurizing device is connected with the gas injection pipeline.

Further, the gas pressurizing device includes: the gas injection tank, the booster pump set and the air pump are connected in sequence, and the gas injection tank is connected with the gas injection pipeline.

Furthermore, the industrial application grade rapid gas dissolving device adopts nine straight pipes to be connected to form an S shape, and the interval between the adjacent straight pipes is 500 mm.

Furthermore, the gas pressurizing device is connected with each gas dissolving pipe, each gas dissolving pipe is connected with the gas pressurizing device in parallel through a pressure dividing device, and the pressure dividing device is a gas pressure regulating valve.

Further, the industrial application grade rapid dissolved gas apparatus further comprises: and the signal transmission and control device is connected with the liquid level sensor and the exhaust valve.

Further, the industrial application grade rapid dissolved gas apparatus further comprises: sled dress platform, sled dress platform include the transportation trailer and install the fixed rack on the transportation trailer, gas dissolving pipe, gaseous supercharging device and signal transmission and controlling means all set up on the fixed rack.

Further, the exhaust valve is an electromagnetic valve.

Furthermore, the diameter of the holes on the flat plate with the holes is 1cm, and the interval is 2 cm.

The invention has the following advantages:

1. the industrial application level rapid gas dissolving device is applied to the ground, and is connected with the original water injection flow, so that the injected water reaches the state of saturated dissolved gas before reaching a wellhead device;

2. the device has a skid-mounted layout, and pipeline components occupy small space and are convenient to transport, install and manage;

3. the device implements automatic control and is convenient to operate.

Drawings

FIG. 1 is a schematic diagram of the working principle of the rapid dissolution method employed in the present invention;

FIG. 2 is a schematic view of the working principle of a straight tube in the rapid dissolution method employed in the present invention;

FIG. 3 is a schematic view of the operation principle of the elbow pipe in the rapid dissolution method adopted in the present invention;

FIG. 4 is a schematic front view of an elbow according to an embodiment of the invention;

FIG. 5 is a side view of an elbow used in an embodiment of the invention;

FIG. 6 is a schematic front view of an S-shaped air-dissolving tube used in the present invention;

FIG. 7 is a schematic top view of an S-shaped gas dissolving tube used in the present invention;

fig. 8 is a schematic diagram of the overall structure of an industrial application-grade rapid gas dissolving device adopted by the invention.

The reference numbers illustrate:

1. a gas dissolving pipe; 11. a top bend; 12. a bottom bend; 13. a pipeline interface; 14. water injection direction; 15. a straight pipe; 16. the water outlet direction; 17. a water injection line inlet; 18. an outlet of a water injection line;

20. a top cross tube; 21. a perforated plate (orifice plate); 22. a liquid level sensor; 23. an exhaust valve; 30. air bubbles; 40. a flange; 50. a gas-liquid interface;

60. a gas pressurizing device; 61. a voltage divider; 70. a signal transmission and control device; 71. liquid level signal transmission line.

Detailed Description

In order to more clearly understand the technical features, objects, and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.

The invention designs a micro-bubble generating device and a zigzag calandria structure on the basis of analyzing the influence factors of the gas dissolving speed. The principle of the method is as follows:

the gas dissolving process is carried out on the contact surface of gas and liquid, and gas molecules are gradually dissolved into the liquid molecules. The dissolution speed is related to the area of the contact surface, and the larger the area is, the faster the dissolution is.

The same volume of gas is converted to bubble form, and the smaller the bubbles, the larger the total bubble surface area, which increases with the 1/3 th power of the number of bubbles, see equation 1.

S_R-the surface area of a large bubble of radius R;

S_nr-the total surface area of n small bubbles of radius r equal in volume to the large bubbles;

by using this principle, in the flowing injection water, gas enters the injection water in the form of fine bubbles and dissolves while flowing. According to this principle, as shown in fig. 1, 6 and 7, the industrial application grade rapid dissolved gas method of the present invention comprises:

injecting water into the pipeline;

then injecting gas into the pipeline for injecting water, controlling the size of bubbles of the injected gas to be below 400 mu m, and controlling the pressure of the injected gas to be 0.2-0.5MPa higher than the pressure in the pipeline for injecting water.

The industrial application grade rapid gas dissolving device comprises:

at least one dissolved air pipe, the dissolved air pipe is U type pipe, the dissolved air pipe includes: the device comprises a first straight pipe, a second straight pipe and a top bent pipe, wherein the first straight pipe and the second straight pipe are vertically arranged and are parallel to each other, and the top bent pipe is connected between the top of the first straight pipe and the top of the second straight pipe; the top bent pipe can be in a circular arc shape or a semicircular shape, and the first straight pipe, the top bent pipe and the second straight pipe are communicated; that is, the gas dissolving pipe consists of a straight pipe section and a bent pipe section, and the bent pipe and the straight pipe can be connected through a flange 40 and are easy to disassemble and assemble; wherein the straight pipe section is internally provided with a gas mixing device; the bent pipe section is internally provided with a stable pore plate, a liquid level sensor and other components; the straight pipe can resist pressure of 50MPa at most and can resist temperature of 100 ℃ to prevent gas corrosion. The safety performance of gas injection under industrial conditions is guaranteed, and the two ends of the straight pipe are connected in a flange manner, so that the assembly and the transportation are facilitated; the performance of the bent pipe is consistent with that of the straight pipe, the maximum pressure resistance is 50MPa, the temperature resistance is 100 ℃, and the gas corrosion is prevented. The safety performance of gas injection under industrial conditions is guaranteed;

as shown in fig. 4 and 5, the top of the top elbow 11 is provided with a slot;

the gas dissolving pipe further comprises:

a top horizontal pipe 20 connected to the top elbow pipe 11; the top transverse pipe 20 is tubular and horizontally arranged; the inner cavity of the top transverse tube is communicated with the open groove; the bottom of the top transverse pipe 20 is welded with the groove; the length of the top transverse pipe is greater than that of the groove; both ends of the top cross tube 20 have flanges 40 for connection;

a perforated flat plate 21, also called a stable orifice plate or orifice plate, covering the slot and connected between the top elbow 11 and the top cross tube 20; the pore plate is fixed in the transverse pipe by screws and can be detached and replaced; the hole structure of the hole plate balances the violent oscillation of the gas at the top when the injected water flows at high speed, so that the gas is separated more stably, and the liquid level can be accurately judged by the liquid level sensor 22;

a level sensor 22 for monitoring a flat plate with holes, which is arranged in the inner cavity of the top transverse tube 20; ultrasonic liquid level sensors are oppositely arranged on two sides of a flat plate 21 (orifice plate) with a hole, and are fixed on planes at two ends of the orifice plate at a distance of 50-100 cm. The ultrasonic velocity difference in water and gas is large, so the sensor can sense the gas-liquid interface 50 sharply, and the interference of impurities injected into water is hardly influenced;

the exhaust valve 23 is arranged at the top of the top transverse pipe 20; the top of the top transverse pipe 20 is provided with an exhaust valve 23, the bottom of the top transverse pipe is connected with an elbow, when the exhaust valve 23 does not exhaust, the top of the top transverse pipe 20 is airtight, when gas in the straight pipe is not completely dissolved, bubbles 30 can be formed and enter an upper space through a stable pore plate, when the gas is increased, when the liquid level descends to a limiting surface, a liquid level sensor sends a signal to control the exhaust valve to open and release top gas. Therefore, the bent pipe not only can be used for connecting the straight pipe, but also can be used for removing undissolved gas in time;

an air injection line, as shown in fig. 1, connected to the bottom of each straight pipe; used for injecting gas into the straight pipe; in addition, an outlet pipeline can be connected with a second straight pipe for discharging water;

the gas mixing device is positioned at the bottom of each straight pipe and positioned at the downstream of the gas injection pipeline, and comprises: the filter disc is provided with a plurality of uniform pores, and the pore diameter of the filter disc is 5-10 mu m; the gas mixing device is positioned at the bottom of the straight pipe section, the core of the gas mixing device is a porous filter disc with uniform diameter, and the diameter uniformity requires more than 80%. The pore size of the filter used in the dissolved gas tube may be, for example, 5 μm or 10 μm. The pore size of the filter plate is 5 μm, which can generate bubbles with a bubble diameter of 100 μm, and the pore size of the filter plate is 510 μm, which can generate bubbles with a bubble diameter of 400 μm. The thickness of the filter plate is 2 mm. The gas mixing device is connected with an external gas injection pipeline.

For example, 100 μm bubbles, at the beginning of injection, require a gas-water ratio not to exceed 1:3 (gas-water ratio lower than 1:5, more sufficient dissolution), which rise and remain stable in a single line without coalescence. When the bubbles in each single pipe are at the outlet of the device, the concentration of the bubbles is maximum (the gas-water ratio is not more than 1: 3); the bubble diameter ratio is about 20% for bubbles of 100 μm, 60% for bubbles of 50 μm and 20% for bubbles of less than 50 μm due to dissolution. After the injected water stably enters the injection well, the volume of the bubbles is reduced along with the increase of the pressure, and the stability is enhanced.

Taking two gases commonly used in the petroleum industry, namely nitrogen and carbon dioxide as examples, under the standard condition of 20 ℃ and 1 atmospheric pressure, the solubility of nitrogen is less than 0.03 (volume ratio to water) under the condition of not adopting the patent technology; the solubility of carbon dioxide can reach 1. The dissolution in the present invention is not only complete dissolution but also a stable dispersion state. By adopting the technology of the patent, the dissolution of nitrogen and carbon dioxide is 10 times of that of natural dissolution, the ratio of nitrogen to water can reach 1:3 (namely 0.3), and the ratio of carbon dioxide can reach 1.5:1, so that the technology is enough for industrial application.

And a water injection pipeline, as shown in fig. 1, connected to the bottom of the first straight pipe for injecting water. The injected water first enters one straight pipe and then enters the bent pipe according to the water injection direction 14, passes through the bent pipe and the top transverse pipe 20 positioned at the top of the bent pipe, flows out of the bent pipe according to the water outlet direction 16, and enters the other straight pipe.

The injected gas is injected at the bottom of the gas dissolving pipe, for example, as shown in fig. 1, fig. 2 and fig. 3, in a single gas dissolving pipe, the injected gas is injected from the bottoms of two straight pipes, and after passing through the gas mixing device, controllable micro-bubbles can be generated due to the small pore diameter of the filter sheet; the micro bubbles rise in a single pipe under the action of buoyancy and fluid carrying, and the bubbles are dissolved in a certain volume or completely dissolved at the top end of the pipe; after passing through the bent pipe section, the mixed fluid continuously dissolves water containing certain dissolved gas under the reverse action of rising bubbles in the straight pipe section, and the mixed fluid enters the next section of pipeline.

Before gas injection, the upper part of a stable pore plate in the elbow section is also filled with injected water, and because of the blockage of the pore plate, the flow of the upper water flow and the flow in the lower channel have speed difference. As shown in fig. 1, 2 and 3, if the bubbles initially generated in a single dissolved air tube are not completely dissolved, part of the bubbles are carried into the connected dissolved air tube by the injected water and move downward. The other part of the bubbles enter the upper part of the orifice plate through the stable orifice plate and form a water level surface at the upper part; when the gas quantity is increased and the water level is lowered to the limit surface, the liquid level sensor is triggered to send a signal. The control gas opens the exhaust valve at the top of the elbow to allow the upper gas to be rapidly exhausted and then closed. The small amount of top gas and the quick opening of the exhaust valve basically ensure that the pressure in the gas dissolving pipe is not reduced.

The hole structure of the flat plate 21 (the stable hole plate) with the holes balances that when injected water flows at a high speed, gas violently vibrates at the top, so that the gas is stably separated, and the liquid level sensor is also favorable for accurately judging the liquid level. Further, as shown in fig. 6, 7 and 8, the industrial-application-grade rapid dissolved gas apparatus includes: a plurality of vertical settings and the gas dissolving pipe 1 that connects gradually, a plurality of gas dissolving pipe 1' S horizontal projection is the S type, the quick gas dissolving device of industrial application level still includes: and the bottom bent pipe 12 is connected to the bottoms of the two adjacent gas dissolving pipes and is connected between the straight pipes of the two adjacent gas dissolving pipes. The two ends of the S-shaped gas dissolving pipe are respectively provided with a pipeline interface 13, the pipeline interface 13 at one end is connected with a water injection pipeline inlet 17, and the pipeline interface 13 at the other end is connected with a water injection pipeline outlet 18. The injected water gradually increases the dissolved gas amount in the process that a single dissolved gas pipe sequentially flows through, the dissolved gas amount increasing effect is better through an S-shaped flow, and the optimal design is that the injected water reaches a saturated state at the outlet of the dissolved gas pipe group. The single u-shaped tube has a low dissolution effect in the limited height. The invention adopts a 9-tube structure, occupies small area and has more reasonable flow.

Further, as shown in fig. 8, the apparatus for rapidly dissolving gas in industrial application level further includes: and a gas pressurizing device 60 connected to the gas injection line so as to pressurize the gas.

Further, the gas pressurizing device includes: the gas injection tank, the booster pump set and the air pump are connected in sequence, and the gas injection tank is connected with the gas injection pipeline. Thus, the supercharging effect is rapid. Under the condition of connecting a booster pump group and an air pump, a steel bottle with higher compressive strength is adopted for the gas injection tank, the inner diameter is 100mm, the length is 10m, and the volume is 0.08m 3. The using pressure is not higher than 30MPa, and the highest pressure resistance is 40 MPa. Because the ratio of the gas injection quantity to the water injection quantity in the gas dissolving process is low (nitrogen is usually lower than 1:50), the laboratory-level supercharger can meet the gas discharge capacity, a plurality of parallel supercharging pump sets can meet the condition of larger gas quantity, and the intermittent operation of a single supercharger can be realized. The air pump is conventional equipment, the output air pressure is 0.8MPa, the discharge capacity is more than 100L/min, and a mode of connecting a plurality of air pumps in parallel can be adopted.

Further, the industrial application grade rapid dissolved gas apparatus further comprises: and the gas storage device is connected with the gas injection tank, provides industrial gas supply for the gas injection tank, and can realize industrial large-scale application, such as underground water injection. The gas storage adopts a mature pressure-resistant storage technology, and the transportation working pressure of the currently produced LNG transportation tank is 20 MPa. The steel cylinder specification of DOT-3AAX and DOT E8009 production and installation is strictly followed. The steel cylinder is made of the following materials: Cr-Mo Steel/4130x Tube Serial No: NJB-236. The size of the steel cylinder: outer diameter 559mm, length 10.98m, cylinder water volume: 2.250m 3. The gas storage device can adopt the steel cylinders manufactured by the same standard, and the materials are the same. 200mm inside diameter, 10m long and 0.314m3 volume. The interior is provided with a buffer safety plate, and the exterior is provided with a rapid pressure relief safety valve. The using pressure is not higher than 15MPa, when the pressure exceeds the limit pressure of the steel cylinder, the safety plate of the main safety valve is actively broken, and the main safety valve exhausts gas and reduces pressure; meanwhile, the signal feedback control device opens the auxiliary safety valve to increase the exhaust speed. The device has higher guarantee in the security performance.

Further, as shown in fig. 8, the gas pressurization device 60 is connected to each gas dissolving tube 1, each gas dissolving tube 1 is connected in parallel to the gas pressurization device 60 through a pressure divider 61, and the pressure divider 61 is a gas pressure regulating valve for finely adjusting the gas pressure when the gas pressurization device 60 enters a single gas dissolving tube 1.

Further, as shown in fig. 8, the apparatus for rapidly dissolving gas in industrial application level further includes: the signal transmission and control device 70 is connected with the liquid level sensor and the exhaust valve through a liquid level signal transmission line 71. The signal transmission and control device mainly comprises the following functions: signal transmission of the ultrasonic liquid level sensor, control of the vent valve/auxiliary safety valve, and flow setting. The signal transmission and control device can be a chip or a computer or a PLC.

The ultrasonic liquid level sensor transmits and receives signals at intervals of every second, the ultrasonic speed is measured, when the speed is obviously reduced, namely a gas-liquid interface reaches a limit position, and the control device opens the exhaust valve. And after the gas-liquid interface is normal, closing the exhaust valve.

Further, the industrial application grade rapid dissolved gas apparatus further comprises: sled dress platform, sled dress platform include the transportation trailer and install the fixed rack on the transportation trailer, gas dissolving pipe, gaseous storage device, gaseous supercharging device and signal transmission and controlling means all set up on the fixed rack. The interval of the single air dissolving pipe is 500mm, and the whole air dissolving pipe can be transported by a common truck. The invention adopts a 9-tube structure, the combined horizontal projection of a plurality of air dissolving tubes is S-shaped, the occupied area is small, and the transportation and the movement are convenient.

Furthermore, the exhaust valve is an electromagnetic valve, so that rapid exhaust and reset are facilitated.

Furthermore, the diameter of the holes on the flat plate with the holes is 1cm, the distance is 2cm, the violent oscillation of gas at the top when injected water flows at a high speed is balanced, the gas is separated stably, the liquid level can be accurately judged by the liquid level sensor, and the liquid level sensor is suitable for rising and discharging undissolved gas.

The working process of the invention is as follows:

after the installation according to the figure 8, the starting end of the S-shaped gas dissolving pipe is connected with a water injection pipeline, and the outlet end is connected with a water injection wellhead device or a pipeline flowing into a well. Connected with a gas supercharging device. Taking the water injection pressure of 20MPa and the ground temperature as an example, the concrete working process is as follows:

preparation work:

the pressure of the gas storage device was set to 12MPa under the condition that the gas was supplied from the gas pressurizing device and the gas had been stored. And (3) starting the gas supercharging device to enable the pressure in the gas injection tank of the supercharging device to reach 21MPa, and setting the pressure value of each pressure dividing device according to the design (the set value is related to the design of gas medium and gas flow, and the pressure difference is not more than 0.1 MPa).

Normal water injection

After the industrial application grade rapid gas dissolving device is connected, normal water injection is carried out, namely, injected water is injected along the gas dissolving pipe inlet.

Operation of gas injection

Opening gas injection valves of each gas dissolving pipe, injecting the injected gas at the bottom of each gas dissolving pipe, and generating controllable micro bubbles after passing through a gas mixing device, which is shown in figure 2; at the initial stage of the micro bubbles rising in a single pipe, the bubbles slightly expand under the influence of the release effect of the gas injection pressure difference; the bubble volume gradually decreases as the time of dissolution increases. In a single straight tube, the initially formed bubbles may all dissolve.

Operation of liquid level sensor

Before gas injection, the upper part of a stable pore plate in the elbow section is also filled with injected water, and because of the blockage of the pore plate, the flow of the upper water flow and the flow in the lower channel have speed difference. As shown in fig. 3, if all the bubbles initially generated in a single dissolved air tube are not dissolved, part of the bubbles are carried into the connected dissolved air tube by the injected water and move downward. The other part of the bubbles enter the upper part of the orifice plate through the stable orifice plate and form a water level surface at the upper part; when the gas quantity is increased and the water level is lowered to the limit surface, the liquid level sensor is triggered to send a signal. The control gas opens the exhaust valve at the top of the elbow to allow the upper gas to be rapidly exhausted and then closed. The small amount of top gas and the quick opening of the exhaust valve basically ensure that the pressure in the gas dissolving pipe is not reduced.

The eyelet structure of the stable orifice plate balances the injected water, and when the injected water flows at a high speed, the gas vibrates violently at the top, so that the gas is stably separated, and the liquid level can be accurately judged by the liquid level sensor.

Fourthly, multiple rounds of dissolution process

The injected water gradually increases the dissolved air quantity in the process that a single dissolved air pipe flows through in sequence, and the optimal design is that the injected water reaches a saturated state at the outlet of the dissolved air pipe group.

And injecting water into the shaft, and finishing the later oil displacement process.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. In order that the components of the present invention may be combined without conflict, it is intended that all equivalent changes and modifications made by those skilled in the art without departing from the spirit and principles of the present invention shall fall within the protection scope of the present invention.

Claims

1. A method for rapid dissolution of gas for industrial applications, the method comprising:

injecting water into the pipeline;

then injecting gas into the water injection pipeline, controlling the size of bubbles of the injected gas to be below 400 mu m, and enabling the pressure of the injected gas to be 0.2-0.5MPa higher than the pressure in the water injection pipeline;

the top of the top elbow is provided with a slot;

the gas dissolving pipe further comprises:

the exhaust valve is arranged at the top of the top transverse pipe;

the gas mixing device is positioned at the bottom of the first straight pipe and positioned at the downstream of the gas injection pipeline, and comprises: the filter disc is provided with a plurality of uniform pores, and the pore diameter of the filter disc is 5-10 mu m; the thickness of the filter is 2 mm;

2. The industrial application-grade rapid gas dissolution method of claim 1, further comprising: and discharging undissolved gas in the pipeline filled with water.

3. The method of claim 1, wherein the industrial grade rapid dissolve gas apparatus comprises: a plurality of vertical settings and the gas dissolving pipe that connects gradually, a plurality of gas dissolving pipe' S horizontal projection is the S type, the quick gas dissolving device of industrial application level still includes: the bottom bent pipe is connected to the bottoms of the two adjacent gas dissolving pipes and is connected between the two adjacent gas dissolving pipes.

4. The method for rapid dissolution of gas for industrial use of claim 1, wherein the apparatus for rapid dissolution of gas for industrial use further comprises: a gas pressurization device connected to the gas injection line, the gas pressurization device comprising: the gas injection tank, the booster pump set and the air pump are connected in sequence, and the gas injection tank is connected with the gas injection pipeline.

5. The method of claim 1, wherein the apparatus is formed by connecting nine straight pipes, and the interval between adjacent straight pipes is 500 mm.

6. The method for rapid dissolution of gas in industrial application level as claimed in claim 4, wherein the gas pressurization device is connected to each gas dissolving tube, each gas dissolving tube is connected in parallel to the gas pressurization device through a pressure divider, and the pressure divider is a gas pressure regulating valve.

7. The method of industrial application-grade rapid gas dissolution according to claim 4, wherein the industrial application-grade rapid gas dissolution apparatus further comprises: and the signal transmission and control device is connected with the liquid level sensor and the exhaust valve, and the exhaust valve is an electromagnetic valve.

8. The method for rapid dissolution of gas for industrial use of claim 7, wherein the apparatus for rapid dissolution of gas for industrial use further comprises: sled dress platform, sled dress platform include the transportation trailer and install the fixed rack on the transportation trailer, gas dissolving pipe, gaseous supercharging device and signal transmission and controlling means all set up on the fixed rack.

9. The process for rapid dissolution of gases for industrial applications of claim 1 wherein the holes in the perforated plate are 1cm in diameter and 2cm apart.