CN112473613A - Atomizing gas-liquid two-phase reaction device - Google Patents
Atomizing gas-liquid two-phase reaction device Download PDFInfo
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- CN112473613A CN112473613A CN202011384530.2A CN202011384530A CN112473613A CN 112473613 A CN112473613 A CN 112473613A CN 202011384530 A CN202011384530 A CN 202011384530A CN 112473613 A CN112473613 A CN 112473613A
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- 239000007788 liquid Substances 0.000 title claims abstract description 208
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 41
- 239000007921 spray Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 22
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 6
- 238000000889 atomisation Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000036632 reaction speed Effects 0.000 abstract description 3
- 239000007795 chemical reaction product Substances 0.000 abstract description 2
- 238000007086 side reaction Methods 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 23
- 239000007791 liquid phase Substances 0.000 description 15
- 238000005507 spraying Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/26—Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
本发明公开了一种喷雾式气液两相反应装置，包括：气液分离器、塔体以及安装在所述塔体内的气体分布器和雾化器，所述雾化器安装在所述塔体的顶部，用于向所述塔体内输送雾化后的液体，所述气体分布器位于所述雾化器的下方，用于向所述塔体内喷射气体；所述塔体的下部形成有排物口，所述气液分离器的进料口与所述排物口连通，所述气液分离器的排液口通过第二液体管道与一第一收集器连通。本发明有利于提升气液两相的反应速度，使反应条件更温和并减少副反应发生，提高气液两相反应产物收率。
The invention discloses a spray type gas-liquid two-phase reaction device, comprising: a gas-liquid separator, a tower body, a gas distributor and an atomizer installed in the tower body, and the atomizer is installed in the tower The top of the body is used to transport the atomized liquid into the tower body, the gas distributor is located below the atomizer, and is used to spray gas into the tower body; the lower part of the tower body is formed with A discharge port, the feed port of the gas-liquid separator communicates with the discharge port, and the liquid discharge port of the gas-liquid separator communicates with a first collector through a second liquid pipeline. The invention is beneficial to improve the reaction speed of the gas-liquid two-phase, make the reaction conditions milder, reduce the occurrence of side reactions, and improve 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)
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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 | A device and method for preparing PEDOT:PSS by gas-liquid two-phase reaction |
| 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 |
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| 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 |
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