CN112473613A - Atomizing gas-liquid two-phase reaction device - Google Patents
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Abstract
The invention discloses a spray type gas-liquid two-phase reaction device, which comprises: the gas-liquid separator is arranged on the tower body, the gas distributor and the atomizer are arranged in the tower body, the atomizer is arranged at the top of the tower body and used for conveying atomized liquid into the tower body, and the gas distributor is located below the atomizer and used for spraying gas into the tower body; the lower part of the tower body is provided with a material discharge port, a feed inlet of the gas-liquid separator is communicated with the material discharge port, and a liquid discharge port of the gas-liquid separator is communicated with a first collector through a second liquid pipeline. The method is beneficial to improving the reaction speed of gas-liquid two-phase reaction, making the reaction condition milder, reducing the occurrence of side reaction and improving the yield of the gas-liquid two-phase reaction product.
Description
Technical Field
The invention belongs to the technical field of gas-liquid reaction equipment, and particularly relates to a spray type gas-liquid two-phase reaction device.
Background
The reaction device is the core of chemical enterprises and is a place for synthesizing and decomposing substances. Since the gas-liquid reaction belongs to a two-phase reaction, the two-phase reaction is characterized in that the reaction can only be carried out at an interface. Because the gas density is low, the gas can be floated and gathered immediately after being introduced into the liquid phase, so that the gas-liquid contact area is rapidly reduced, and the gas-liquid phase reaction rate is rapidly reduced. Currently, researchers in the industry adopt various methods to increase the gas-liquid contact area in a reaction container. For example, CN210906149U, CN209465008U and CN209173918U are added into a reaction kettle by a stirrer, gas introduced into the kettle is dispersed into bubbles, and the residence time in a liquid phase is increased as much as possible by the movement of the bubbles. Also, the scholars blow gas into the liquid phase through the micropore device, reduce the volume of bubbles through micropores, increase the surface area, and utilize the process of gas ascending in the liquid phase to realize gas-liquid contact and increase the reaction rate, such as CN110404485A, CN208003959U, and the like. Also, researchers have devised baffle plates and the like to increase the gas-liquid reaction rate, such as CN 106268588A. However, none of the currently mentioned technologies can substantially change the gas-liquid reaction state, and in the gas-liquid reaction process performed in these reactors, the liquid phase part is a continuous phase, while the gas phase is a discontinuous phase, which is easy to gather and difficult to disperse into micro-bubbles, resulting in a short gas-liquid phase contact time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a spray-type gas-liquid two-phase reaction device, which increases the contact area with gas by spraying liquid into a mist shape and reducing the size of liquid drops to enlarge the surface area of liquid per unit mass so as to obtain better mass transfer effect and be beneficial to improving the reaction rate of gas-liquid two-phase reaction. The continuous phase of the spray type gas-liquid two-phase reaction device is a gas phase, the liquid phase is a discontinuous phase, and when the liquid drops are small enough, the surface area of gas-liquid contact is obviously improved. Is beneficial to improving the reaction speed of gas phase and liquid phase.
The purpose of the invention is realized by the following technical scheme.
An atomized gas-liquid two-phase reaction device, comprising: the gas-liquid separator is arranged on the tower body, the gas distributor and the atomizer are arranged in the tower body, the atomizer is arranged at the top of the tower body and used for conveying atomized liquid into the tower body, and the gas distributor is located below the atomizer and used for spraying gas into the tower body; the lower part of the tower body is provided with a material discharge port, a feed inlet of the gas-liquid separator is communicated with the material discharge port, and a liquid discharge port of the gas-liquid separator is communicated with a first collector through a second liquid pipeline.
In the above technical solution, the gas distributor includes: the air guide structure comprises a cylindrical shell and a plurality of air guide bodies arranged in the shell, wherein the air guide bodies are arranged at intervals along the circumferential direction, a gap is formed between every two adjacent air guide bodies, and an air inlet is formed in the shell.
In the technical scheme, the air guide body is formed by surrounding a top surface, a bottom surface, a front surface and 2 side surfaces, the top surface and the bottom surface of each air guide body are both planes, the top surface of each air guide body is fixedly installed on the inner wall of the top surface of the shell, the bottom surface of each air guide body is fixedly installed on the inner wall of the bottom surface of the shell, the distance between the 2 side surfaces of each air guide body is gradually reduced from front to back, the front surface of each air guide body is quadrilateral, and the top surface, the bottom surface and the 2 side surfaces are respectively connected to four sides of the quadrilateral.
In the above technical solution, the method further comprises: the first liquid pipeline is used for inputting liquid to the atomizer, and the first gas pipeline is communicated with the gas inlet.
In the technical scheme, the exhaust port of the gas-liquid separator is communicated with a cyclone separator through a second gas pipeline, the cyclone separator is used for performing gas-liquid separation again, the exhaust port of the cyclone separator is communicated with an absorption tower through a third gas pipeline, and the liquid discharge port of the cyclone separator is communicated with a second collector through a third liquid pipeline.
In the above technical solution, the second liquid pipeline is provided with a first three-way valve, and the first three-way valve is communicated with the first liquid pipeline through a fourth liquid pipeline, so that the liquid discharged from the liquid discharge port of the gas-liquid separator is introduced into the first collector or the first liquid pipeline.
In the above technical solution, the third liquid pipeline is provided with a second three-way valve, and the second three-way valve is communicated with the first liquid pipeline through a fifth liquid pipeline, so that the liquid discharged from the liquid discharge port of the cyclone separator is introduced into the second collector or the first liquid pipeline.
In the above technical solution, a third three-way valve is installed on the third gas pipeline, and the third three-way valve is communicated with the first gas pipeline through a pipeline, so that gas discharged from the gas outlet of the cyclone separator is introduced into the absorption tower or the first gas pipeline.
In the above technical scheme, the second liquid pipeline is provided with a first drain valve and a first detection device, and the first detection device is used for detecting the mass percentage/volume percentage of the liquid in the second liquid pipeline after reacting with the gas.
In the above technical scheme, the third liquid pipeline is provided with a second trap and a second detection device, and the second detection device is used for detecting the mass percentage/volume percentage of liquid in the third liquid pipeline after reacting with gas.
In the above technical scheme, a booster pump and a third detection device are installed on a third gas pipeline between a third three-way valve and an exhaust port of the cyclone separator, and the third detection device is used for detecting the volume percentage of gas which is in the third gas pipeline and is reacted with liquid.
In the above technical solution, a first valve is installed on the first liquid pipeline, and a second valve is installed on the first gas pipeline.
In the above technical solution, a first delivery pump is installed on the fourth liquid pipeline, a second delivery pump is installed on the fifth liquid pipeline, and both the fourth liquid pipeline and the fifth liquid pipeline are communicated with a main pipeline and communicated with the first liquid pipeline through the main pipeline.
The invention has the following beneficial effects:
the method is beneficial to improving the reaction speed of gas-liquid two-phase reaction, making the reaction condition milder, reducing the occurrence of side reaction and improving the yield of the gas-liquid two-phase reaction product.
Drawings
FIG. 1 is a schematic structural view of a spray type gas-liquid two-phase reaction apparatus according to the present invention;
FIG. 2 is a schematic view of the gas-liquid separator of the present invention.
Wherein, 1: atomizer, 2: tower body, 3: gas distributor, 4: gas-liquid separator, 5: cyclone separator, 6: absorption tower, 7: a booster pump, 8: first delivery pump, 9: second delivery pump, 10: first three-way valve, 11: second three-way valve, 12: first valve, 13: second valve, 14: third three-way valve, 15: first trap, 16: second trap, 17: a housing, 18: air inlet, 19: air guide, 20: first collector, 21: second collector, 22: first liquid conduit, 23: second liquid conduit, 24: third liquid conduit, 25: fourth liquid conduit, 26: first gas line, 27: second gas line, 28: third gas line, 29: a fifth fluid conduit.
Detailed Description
The technical scheme of the invention is further explained by combining specific examples.
Example 1
As shown in fig. 1, an atomizing gas-liquid two-phase reaction apparatus includes: the gas-liquid separator 4, the tower body 2, and the gas distributor 3 and the atomizer 1 which are installed in the tower body 2, wherein the atomizer 1 is installed at the top of the tower body 2 and is used for conveying atomized liquid into the tower body 2, i.e. atomizing the liquid into tiny liquid drops and spraying the tiny liquid drops into the tower body 2, and the gas distributor 3 is located below the atomizer 1 and is used for spraying gas into the tower body 2 and uniformly distributing the gas; the lower part of the tower body 2 is provided with a discharge port for discharging a mixture of gas and liquid, and the gas-liquid separator 4 is used for separating the mixture of gas and liquid into gas and liquid. The upper part of the gas-liquid separator 4 is fixedly arranged with the lower part of the tower body 2 through a flange, the feed inlet of the gas-liquid separator 4 is communicated with the material discharge port, and the liquid discharge port of the gas-liquid separator 4 is communicated with a first collector 20 through a second liquid pipeline 23.
Example 2
As shown in fig. 2, the gas distributor 3 includes, based on embodiment 1: the air guide structure includes a cylindrical casing 17 and a plurality of air guides 19 mounted in the casing 17, the plurality of air guides 19 are provided at intervals in a circumferential direction and are located on the same horizontal plane, a gap is formed between adjacent air guides 19, and an air inlet 18 is formed in the casing 17. The width of the gap between the adjacent air guide bodies 19 is 3-50cm and is inclined to the radial direction of the shell 17, and the included angle between the length direction of the gap on the horizontal plane and the radial direction of the shell 17 is 10-80 degrees. The direction in which the gas is blown in through the gas inlet 18 in the housing 17 is parallel to the length direction of the gap in the horizontal plane.
The air guide body 19 is enclosed by the top surface, the bottom surface, the front surface and 2 side surfaces, the top surface and the bottom surface of each air guide body 19 are both planes, the top surface of each air guide body 19 is fixedly installed on the inner wall of the top surface of the shell 17, the bottom surface of each air guide body 19 is fixedly installed on the inner wall of the bottom surface of the shell 17, the distance between the 2 side surfaces of each air guide body 19 gradually decreases from front to back (the rear end of each air guide body 19 is an intersecting line of the 2 side surfaces), the front surface of each air guide body 19 is quadrilateral, and the top surface, the bottom surface and the 2 side surfaces.
The front surface of each air guide body 19 is adjacent to the rear end of the air guide body 19 in front of the air guide body 19, and each gap is surrounded by the front surface of one air guide body 19 and the inner side surface of the adjacent air guide body 19. 2 side faces of each wind guide body are cambered surfaces respectively.
Example 3
On the basis of embodiment 2, the method further comprises the following steps: a first liquid conduit 22 for feeding liquid to the atomizer 1 and a first gas conduit 26 communicating with the gas inlet 18.
The gas outlet of the gas-liquid separator 4 is communicated with a cyclone separator 5 through a second gas pipe 27, the cyclone separator 5 is used for gas-liquid separation again, the gas outlet of the cyclone separator 5 is communicated with an absorption tower 6 through a third gas pipe 28, and the liquid outlet of the cyclone separator 5 is communicated with a second collector 21 through a third liquid pipe 24.
The second liquid pipe 23 is provided with a first three-way valve 10, the first three-way valve 10 is communicated with the first liquid pipe 22 through a fourth liquid pipe 25, and the first three-way valve 10 is adjusted so that the liquid discharged from the liquid discharge port of the gas-liquid separator 4 is introduced into the first collector 20 or is introduced into the first liquid pipe 22 through the fourth liquid pipe 25.
A second three-way valve 11 is mounted on the third liquid conduit 24, the second three-way valve 11 is in communication with the first liquid conduit 22 via a fifth liquid conduit 29, and the second three-way valve 11 is adjusted so that liquid discharged from the liquid discharge port of the cyclone 5 passes into the second collector 21 or into the first liquid conduit 22 via the fifth liquid conduit 29.
A third three-way valve 14 is installed on the third gas pipe 28, the third three-way valve 14 is connected to the first gas pipe 26 through a pipe, and the third three-way valve 14 is adjusted so that the gas discharged from the gas outlet of the cyclone 5 is introduced into the absorption tower 6 through the third gas pipe 28 or is introduced into the first gas pipe 26 through a part of the third gas pipe 28, the third three-way valve 14, and the pipe through which the third three-way valve 14 is connected to the first gas pipe 26.
The second liquid pipeline 23 is provided with a first steam trap 15 and a first detection device (not shown in the figure), and the first detection device is used for detecting the mass percentage M1 of the liquid in the second liquid pipeline 23 after reacting with the gas. The first trap 15 functions to block gas and allow liquid to flow through. When the first detecting means detects that M1 exceeds 90 wt%, the first three-way valve 10 is adjusted so that the liquid discharged from the liquid discharge port of the gas-liquid separator 4 is introduced into the first collector 20, and when the first detecting means detects that M1 is less than 90 wt%, the first three-way valve 10 is adjusted so that the liquid discharged from the liquid discharge port of the gas-liquid separator 4 is introduced into the first liquid pipe 22 via the fourth liquid pipe 25.
The third liquid pipeline 24 is provided with a second steam trap 16 and a second detection device (not shown in the figure), and the second detection device is used for detecting the mass percentage M2 of the liquid in the third liquid pipeline 24 after reacting with the gas. The second trap 16 functions to block gas and allow liquid to flow through. When the second detecting means detects that M2 exceeds 90 wt%, the second three-way valve 11 is adjusted so that the liquid discharged from the liquid discharge port of the cyclone 5 is passed into the second collector 21, and when the second detecting means detects that M2 is less than 90 wt%, the second three-way valve 11 is adjusted so that the liquid discharged from the liquid discharge port of the cyclone 5 is passed into the first liquid conduit 22 via the fifth liquid conduit 29.
A booster pump 7 and a third detecting device (not shown) are installed on the third gas pipe 28 between the third three-way valve 14 and the exhaust port of the cyclone 5, and the third detecting device is used for detecting the volume percentage V1 of the gas after the reaction with the liquid in the third gas pipe 28. When the third detecting means detects that 1-V1 is below 50% (volume percentage content), the third three-way valve 14 is adjusted to pass the gas discharged from the gas outlet of the cyclone 5 into the absorption tower 6, and when the third detecting means detects that 1-V1 is above 50% (volume percentage content), the third three-way valve 14 is adjusted to pass the gas discharged from the gas outlet of the cyclone 5 into the first gas duct 26.
A first valve 12 is mounted on the first liquid line 22 and a second valve 13 is mounted on the first gas line 26.
A first delivery pump 8 is mounted on the fourth liquid line 25 and a second delivery pump 9 is mounted on the fifth liquid line 29, the fourth liquid line 25 and the fifth liquid line 29 each communicating with a main line and via this with the first liquid line 22.
The liquid phase raw material is preheated to 40-120 ℃, then enters the atomizer 1 through the first liquid pipeline 22 and the first valve 12, is atomized into micro droplets by the atomizer, and then is sprayed into the tower body 2. The gas phase raw material is preheated to 40-120 ℃, enters the gas distributor 3 through the second valve 13 through the first gas pipeline 26, and is sprayed into the tower body 2. The atomized liquid phase and the gas phase are fully contacted in the tower body 2, and after reaction, the mixture of the gas and the liquid is subjected to gas-liquid separation through a gas-liquid separator 4. The liquid phase in the gas-liquid separator 4 enters the first three-way valve 10 through the second liquid pipe 23 and the first drain valve 15, and according to the detection result of the first detection device, the liquid phase can flow into the first collection container 20 or the fourth liquid pipe 25, and when flowing into the fourth liquid pipe 25, the liquid phase flows back to the atomizer 1 through the first delivery pump 8. The gas phase portion in the gas-liquid separator 4 is introduced into the cyclone 5 through the second gas pipe 27, and gas-liquid separation is continued in the cyclone 5. The gas phase separated by the cyclone separator 5 is conveyed to the third three-way valve 14 through the booster pump 7 and the third gas pipeline 28, and then conveyed to the absorption tower 6 or the gas distributor 3 according to the detection result of the third detection device; the liquid phase fraction separated by the cyclone 5 enters the second three-way valve 11 through the second trap 16, flows into the second collector 21 or the second transfer pump 9 according to the detection result of the second detection means, and is returned to the atomizer 1 through the second transfer pump 9 when flowing into the second transfer pump 9.
Example (c):
taking a mixture of ethylene carbonate and dibenzoyl peroxide (as an initiator) as liquid, wherein the mass ratio of the ethylene carbonate to the dibenzoyl peroxide is 200:1, preheating the liquid to 80 ℃, fully mixing, irradiating, spraying the liquid into the tower body 2 through the first liquid pipeline 22 by using the atomizer 1 to form atomized liquid drops, preheating chlorine gas serving as gas to 80 ℃ through a heat exchanger (not shown in the figure), spraying the chlorine gas into the tower body 2 through the gas distributor 3 to fully contact with ethylene carbonate atomized liquid in the tower body 2 through the second valve 13 and the first gas pipeline 26. The flow rate of ethylene carbonate atomized liquid is 3.56g/min, and the chlorine flow rate is 1.325L/min. After 120min of continuous reaction. The total amount of the product liquid collected in the first collector 20 and the second collector 21 was 573.12g, the purity was 95.55%, and the product yield was 92.6% (the purity of the conventional reaction apparatus was generally lower than 80%, and the product yield was generally lower than 85%).
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (10)
1. An atomizing gas-liquid two-phase reaction device, comprising: the tower comprises a gas-liquid separator (4), a tower body (2), and a gas distributor (3) and an atomizer (1) which are arranged in the tower body (2), wherein the atomizer (1) is arranged at the top of the tower body (2) and used for conveying atomized liquid into the tower body (2), and the gas distributor (3) is positioned below the atomizer (1) and used for spraying gas into the tower body (2); the lower part of tower body (2) is formed with row's thing mouth, the feed inlet of vapour and liquid separator (4) with arrange the thing mouth intercommunication, the leakage fluid dram of vapour and liquid separator (4) passes through second liquid pipeline (23) and communicates with a first collector (20).
2. The aerosol gas-liquid two-phase reaction device according to claim 1, wherein the gas distributor (3) comprises: the air guide structure comprises a cylindrical shell (17) and a plurality of air guide bodies (19) installed in the shell (17), wherein the air guide bodies (19) are arranged at intervals along the circumferential direction, gaps are formed between every two adjacent air guide bodies (19), and an air inlet (18) is formed in the shell (17).
3. The spray type gas-liquid two-phase reaction device according to claim 2, wherein the wind guide body (19) is surrounded by a top surface, a bottom surface, a front surface and 2 side surfaces, the top surface and the bottom surface of each wind guide body (19) are both flat surfaces, the top surface of the wind guide body (19) is fixedly mounted on the inner wall of the top surface of the shell (17), the bottom surface of the wind guide body (19) is fixedly mounted on the inner wall of the bottom surface of the shell (17), the distance between the 2 side surfaces of the wind guide body (19) is gradually reduced from front to back, the front surface of the wind guide body (19) is quadrilateral, and the top surface, the bottom surface and the 2 side surfaces are respectively connected to four sides of the quadrilateral.
4. The sprayable gas-liquid two-phase reaction device of claim 1, further comprising: a first liquid conduit (22) for feeding liquid to the atomizer (1) and a first gas conduit (26) communicating with the gas inlet (18).
5. The spray-type gas-liquid two-phase reaction device according to claim 4, wherein the gas outlet of the gas-liquid separator (4) is communicated with a cyclone (5) through a second gas pipe (27), the cyclone (5) is used for gas-liquid separation again, the gas outlet of the cyclone (5) is communicated with an absorption tower (6) through a third gas pipe (28), and the liquid outlet of the cyclone (5) is communicated with a second collector (21) through a third liquid pipe (24).
6. The spray type gas-liquid two-phase reaction device according to claim 5, wherein a first three-way valve (10) is installed on the second liquid pipe (23), and the first three-way valve (10) is communicated with the first liquid pipe (22) through a fourth liquid pipe (25) so that the liquid discharged from the liquid discharge port of the gas-liquid separator (4) is introduced into the first collector (20) or the first liquid pipe (22).
7. The spray-type gas-liquid two-phase reaction device according to claim 6, wherein a second three-way valve (11) is installed on the third liquid pipe (24), and the second three-way valve (11) is communicated with the first liquid pipe (22) through a fifth liquid pipe (29) so that the liquid discharged from the liquid discharge port of the cyclone (5) is introduced into the second collector (21) or the first liquid pipe (22).
8. The aerosol gas-liquid two-phase reaction apparatus according to claim 7, wherein a third three-way valve (14) is installed on the third gas line (28), and the third three-way valve (14) is connected to the first gas line (26) through a line so that the gas discharged from the gas outlet of the cyclone (5) is introduced into the absorption tower (6) or the first gas line (26).
9. The spray type gas-liquid two-phase reaction device according to claim 8, wherein the second liquid pipeline (23) is provided with a first drain valve (15) and a first detection device, and the first detection device is used for detecting the mass percent/volume percent of the liquid in the second liquid pipeline (23) after the liquid reacts with the gas.
10. The spray type gas-liquid two-phase reaction device according to claim 9, wherein a second drain valve (16) and a second detection device are installed on the third liquid pipeline (24), and the second detection device is used for detecting the mass percent/volume percent of the liquid in the third liquid pipeline (24) after the liquid reacts with the gas;
a booster pump (7) and a third detection device are arranged on a third gas pipeline (28) between the third three-way valve (14) and an exhaust port of the cyclone separator (5), and the third detection device is used for detecting the volume percentage of gas in the third gas pipeline (28) after the gas reacts with liquid;
a first valve (12) is arranged on the first liquid pipeline (22), and a second valve (13) is arranged on the first gas pipeline (26);
a first delivery pump (8) is arranged on the fourth liquid pipeline (25), a second delivery pump (9) is arranged on the fifth liquid pipeline (29), and the fourth liquid pipeline (25) and the fifth liquid pipeline (29) are both communicated with a main pipeline and communicated with the first liquid pipeline (22) through the main pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011384530.2A CN112473613A (en) | 2020-12-01 | 2020-12-01 | Atomizing gas-liquid two-phase reaction device |
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| CN202011384530.2A CN112473613A (en) | 2020-12-01 | 2020-12-01 | Atomizing gas-liquid two-phase reaction device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115121191A (en) * | 2022-07-13 | 2022-09-30 | 重庆大学 | Preparation of PEDOT by gas-liquid two-phase reaction: PSS device and method |
| US20230042749A1 (en) * | 2021-08-06 | 2023-02-09 | Shandong Ruiheng Xingyu Petroleum Technology Development Co., Ltd. | Atomization Generator And Special High-Pressure Atomization Generation Device For Increasing Oil And Gas Field Recovery |
-
2020
- 2020-12-01 CN CN202011384530.2A patent/CN112473613A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230042749A1 (en) * | 2021-08-06 | 2023-02-09 | Shandong Ruiheng Xingyu Petroleum Technology Development Co., Ltd. | Atomization Generator And Special High-Pressure Atomization Generation Device For Increasing Oil And Gas Field Recovery |
| US11964243B2 (en) * | 2021-08-06 | 2024-04-23 | Shandong Ruiheng Xingyu Petroleum Technology Development Co., Ltd. | Atomization generator and special high-pressure atomization generation device for increasing oil and gas field recovery |
| CN115121191A (en) * | 2022-07-13 | 2022-09-30 | 重庆大学 | Preparation of PEDOT by gas-liquid two-phase reaction: PSS device and method |
| CN115121191B (en) * | 2022-07-13 | 2023-08-04 | 重庆大学 | And (3) preparing PEDOT by gas-liquid two-phase reaction: PSS device and method |
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