CN116651329A - Gas distributor and bubble column of double-ring distribution pipe of anti-backflow - Google Patents
Gas distributor and bubble column of double-ring distribution pipe of anti-backflow Download PDFInfo
- Publication number
- CN116651329A CN116651329A CN202310894999.8A CN202310894999A CN116651329A CN 116651329 A CN116651329 A CN 116651329A CN 202310894999 A CN202310894999 A CN 202310894999A CN 116651329 A CN116651329 A CN 116651329A
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- China
- Prior art keywords
- gas
- pipe
- distribution pipe
- distributor
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009826 distribution Methods 0.000 title claims abstract description 106
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 238000007667 floating Methods 0.000 claims abstract description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 51
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 10
- 229910052801 chlorine Inorganic materials 0.000 claims description 10
- 239000000460 chlorine Substances 0.000 claims description 10
- 239000007791 liquid phase Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 14
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 230000005587 bubbling Effects 0.000 description 7
- 239000012071 phase Substances 0.000 description 5
- FBBDOOHMGLLEGJ-UHFFFAOYSA-N methane;hydrochloride Chemical compound C.Cl FBBDOOHMGLLEGJ-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
-
- 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
- B01J10/00—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor
- B01J10/002—Chemical processes in general for reacting liquid with gaseous media other than in the presence of solid particles, or apparatus specially adapted therefor carried out in foam, aerosol or bubbles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention discloses a gas distributor of a double-ring-shaped distribution pipe capable of preventing backflow and a bubble column, wherein the gas distributor comprises an air inlet pipe, one end of the air inlet pipe is an air inlet, the other end of the air inlet pipe is connected with an upper ring-shaped distribution pipe, a filtering baffle plate is fixedly arranged between the two ends of the air inlet pipe, a floating ball is arranged between the filtering baffle plate and the air inlet, the air inlet pipe between the floating ball and the air inlet at least comprises a reducing section, the inner diameter of the reducing section is reduced and is smaller than the diameter of the floating ball, a liquid distributor in the bubble column is positioned below the gas distributor, and a liquid outlet of the liquid distributor is positioned right below a gas distribution hole of the upper ring-shaped distribution pipe. The pipeline corrosion caused by the liquid backflow air inlet gas distributor is avoided, so that the service life of the vent pipe is shortened, the middle gas distribution area is increased, the gas content in the reactor is improved, the dead zone occurrence condition of gas is reduced, the higher the gas content is, the faster the reaction rate is, and the working efficiency is greatly improved.
Description
Technical Field
The invention relates to a gas distributor in the field of chemical equipment, in particular to a novel gas distributor used in gas-liquid two-phase mixing reaction, and in particular relates to a gas distributor with a double-ring-shaped distribution pipe for preventing backflow and a bubbling tower.
Background
In the production process of methane chloride, methanol liquid is filled in a bubbling tower, chlorine is sprayed into the tower from a gas distributor for chemical reaction, after the reaction is finished, the methanol liquid in the tower is changed into methane chloride, the gas distributor stops air inlet, the pressure of the liquid in the tower is larger than the pressure of the gas in the distributor, and the liquid in the tower enters the gas distributor from the gas distribution Kong Daoguan, so that pipeline corrosion is easy to cause.
In methane chloride production processes, a bubble column is typically utilized to produce methane chloride, and chlorine outside of the bubble column is introduced into the column for treatment or chemical reaction in contact with liquid methanol. However, when the gas outside the tower is directly introduced into the tower, uneven distribution of the gas is often caused, local concentration of the gas or dead zone of the gas (no inflow of the gas) occurs, and the reaction effect and the reaction efficiency in the tower are seriously affected. To avoid this, a gas distributor is often installed in the column so that the gas introduced into the column can be uniformly distributed into the reaction liquid. At present, the common gas distributors are plate-type gas distributors and tubular gas distributors, and the plate-type gas distributors have the advantages of uniform bubble size, uniform distribution and large distribution area. However, the bubbles are too dense, the bubbles are easy to gather and become large in the rising process, the residence time is short, the chlorine is discharged out of the tower after the chlorine is not completely reacted with the methanol, and the energy consumption is lost, so that the mass transfer effect is affected. The tubular gas distributor can prevent the condition that the gas is locally concentrated or dead zones appear, and the working efficiency of the gas distributor is greatly improved. However, the sparger has too much dispersion of bubbles, resulting in lower gas content in the whole tower, which is only suitable for reactions with low gas content requirements, and has certain limitations.
Moreover, the two gas distributors can not prevent liquid from flowing backwards into the gas distributors, and pipelines are easy to corrode, so that the service life of the vent pipe is shortened.
Therefore, it is very important to develop a novel gas distributor which can prevent liquid from flowing backward, has enough gas distribution points, does not cause too dense bubbles to be easily aggregated and become large, has shorter residence time, and does not cause too dispersed gas content in the whole tower to be low.
Disclosure of Invention
The invention designs a gas distributor of a double-ring distribution pipe for preventing backflow, which can solve the problem that liquid flows back into an air inlet pipe, and bubbles generated at the same time of improving the gas content in the tower can not be too densely formed into large bubbles.
The technical scheme disclosed by the invention is as follows: the utility model provides a prevent gas distributor of double-ring shape distribution pipe that flows backward, includes the intake pipe, and intake pipe one end is the air inlet, and the annular distribution pipe is connected to the other end, and fixed mounting has filtering baffle between the both ends of intake pipe, has placed the floater between filtering baffle and the air inlet, and the intake pipe between floater and the air inlet includes a reducing section at least, and the internal diameter of reducing section diminishes, just is less than the diameter of floater.
On the basis of the scheme, as the optimization, the other end of the air inlet pipe is fixedly connected with the connecting pipe, the left end of the connecting pipe is fixedly provided with the sealing plate, the two sides of the connecting pipe are fixedly connected with the upper annular distribution pipe, and the air distribution holes on the upper annular distribution pipe face downwards.
On the basis of the scheme, preferably, the connecting pipe is provided with two large round holes with the centers on the same horizontal line at one end close to the sealing plate, and the upper annular distribution pipe is welded at the large round holes on the connecting pipe.
On the basis of the scheme, as the preference, the bottom of the connecting pipe is provided with a small circular opening, the circle center of the small circular opening and the circle centers of the two large circular openings form an included angle of 90 degrees, one end of the J-shaped bent pipe is fixedly connected with the small circular opening, and the other end of the J-shaped bent pipe is fixedly connected with the lower annular distribution pipe.
On the basis of the scheme, preferably, the upper annular distribution pipe and the lower annular distribution pipe at least comprise two half pipes, the two half pipes are connected through a flange, and the plane of the upper annular distribution pipe is higher than that of the lower annular distribution pipe.
On the basis of the above scheme, preferably, the upper and lower sides of the lower annular distribution pipe are provided with gas distribution holes.
A bubble column comprising a liquid distributor and a gas distributor as claimed in any one of claims 1 to 6, the liquid distributor being located below the gas distributor, the liquid outlet of the liquid distributor being located directly below the gas distribution holes of the upper annular distribution pipe.
On the basis of the scheme, as the preferable mode, a liquid phase feed inlet pipe in the bubbling tower upwards sprays methanol liquid through a liquid distributor, gas blows a floating ball at a gas inlet, the gas passes through a gas inlet pipe and passes through a filtering baffle plate, enters the gas distributor, flows to the gas distributor in two directions at the joint, flows through an upper annular distribution pipe in one direction, flows through gas distribution holes in the upper annular distribution pipe to react with methanol in a contact manner, so that most of methanol reacts with chlorine, flows through a lower annular distribution pipe in the other direction, and reacts with methanol at the center of the gas distributor through the gas distribution holes in the upper side and the lower side of the lower annular distribution pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. the pipeline corrosion caused by the liquid backflow air inlet distributor is avoided, so that the service life of the vent pipe is shortened.
2. The air hole distance is not dense, the generated air bubbles are not easy to be aggregated into large air bubbles, the residence time is long, and the raw materials are utilized to the greatest extent.
3. The middle gas distribution area is increased, the gas content in the reactor is improved, the dead zone of the gas is reduced, the higher the gas content is, the faster the reaction rate is, and the working efficiency is greatly improved.
Drawings
FIG. 1 is a schematic view of a gas distributor;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a view showing the construction of the inside of the intake pipe;
FIG. 4 is a schematic view of the structure of a filter baffle;
FIG. 5 is an upper annular distribution tube hole diameter and angle;
FIG. 6 is a lower annular distribution tube hole diameter and angle;
FIG. 7 is a schematic diagram of the structure of a bubble column;
fig. 8 is a perspective view of a gas distributor.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
As shown in fig. 1-8, the gas distributor of the anti-backflow double-ring-shaped distribution pipe comprises an air inlet pipe 1, a filtering baffle 11, a floating ball 12, a connecting pipe 2, a sealing plate 4,J type bent pipe 10, an upper ring-shaped distribution pipe 3, a lower ring-shaped distribution pipe 8, a small connecting pipe 9, gas distribution holes 7, a flange 5 and a gasket 6.
The right end of the air inlet pipe 1 is in a butt joint shape of two circular tables, as shown in fig. 4, a filtering baffle 11 is arranged at the left end of the butt joint shape of the two circular tables, a floating ball 12 is arranged in the filtering baffle 11, and when air is inlet, air pressure can jack the eccentric floating ball 12 open and is blocked by the filtering baffle 11; after the air intake is finished, the pressure of the liquid in the tower is larger than the pressure of the gas in the distribution pipe, so that the backflow can be performed, the pressure of the gas in the distribution pipe can firmly press the floating ball 12 at the air inlet, the air inlet is blocked, the tightness is ensured, and the liquid is prevented from flowing back into the air distributor. The other end of the air inlet pipe 1 is connected with a connecting pipe 2, and the left end of the connecting pipe 2 is welded by a sealing plate 4 in a sealing way. The upper annular distribution pipe 3 is connected with the connecting pipe 2, the gas distribution holes 7 are downward, the two semi-annular distribution pipes are connected by the flange 5, and the gasket 6 is arranged between the flange 5 and the flange 5 to prevent leakage. The connecting pipe 2 is provided with two large round openings with the centers on the same horizontal line near the sealing plate 4 for connecting the upper annular distribution pipe 3. The bottom of the connecting pipe 2 is provided with a small circular opening, and the center of the small circular opening and the centers of the two large circular openings form an included angle of 90 degrees and are used for connecting the lower annular distribution pipe 8. The upper annular distribution pipe 3 is directly welded at a large circular opening on the connecting pipe 2, the lower annular distribution pipe 8 moves downwards for a certain distance through the J-shaped bent pipe 10 and is welded at a small circular hole at the bottom through the J-shaped bent pipe 10, and the upper annular distribution pipe and the lower annular distribution pipe are communicated. The upper annular distribution pipe 3 is thick, the gas distribution holes 7 are downward, a certain number of circular distribution holes 7 are formed in the lower end of the upper annular distribution pipe 3, each row of 5 distribution holes are 10 mm in diameter, the included angle between the holes is 4 degrees as shown in fig. 5, and therefore small bubbles are not too dense to be gathered into large bubbles to cause short stay time in the tower due to over-perforation, and chlorine is discharged out of the tower due to incomplete reaction. The open pores are downward and are opposite to the holes of the liquid distributor, so that the reaction is more sufficient. The lower annular distribution pipe 8 is thin and the diameter is less than the upper annular distribution pipe 3, the upper end and the lower end of the gas distribution hole 7 are provided with 3 distribution holes in each row, the diameter of each distribution hole is 6mm, the included angle between the holes is 4 DEG as shown in figure 6, the two ends of the lower annular distribution pipe 8 are connected with the J-shaped bent pipe 10 through the small connecting pipe 9, the upper annular distribution pipe and the lower annular distribution pipe are parallel, the lower annular distribution pipe 8 can generate uniform bubbles in the central area of the reactor, the gas content in the tower is improved, and the reaction rate in the tower is improved.
As shown in fig. 7, the bubble column includes a liquid distributor 101, a gas distributor 102, a level gauge 103, a manhole 105, and an air outlet 104. The tower body is provided with a manhole 105, and the bubbling tower can be internally overhauled through the manhole 105. The liquid phase feed inlet pipe in the bubbling tower upwards sprays methanol liquid through the liquid distributor 101, the gas phase feed inlet pipe downwards sprays chlorine through the gas distributor 102, the gas blows off the unbalanced floating center ball 12 at the pipe orifice, the gas passes through the gas inlet pipe 1 and the filtering baffle 11, enters the gas distributor 102, then is sprayed out from the gas distribution holes, the cross reaction is carried out between the gas distributor and the liquid distributor, the gas introduced from outside the tower enters the gas distributor 102 through the gas inlet pipe orifice of the gas distributor, the gas flows to the distribution pipe at the joint pipe 2 of the gas inlet pipe 1 in two directions, flows through the upper annular distribution pipe 3 in one direction, and contacts and reacts with the methanol through the lower end distribution hole 7, so that most of the methanol and the chlorine react. The air holes are downward and face the liquid phase outlet, so that the reaction is fully carried out to the greatest extent in the process, the air hole distance is not dense, the generated air bubbles are not easy to be aggregated into large air bubbles, and the residence time in the tower is long; the other direction flows through the lower annular distribution pipe 8, gas changes direction through the bent pipe and reaches the inside of the lower annular distribution pipe 8, and the gas distribution holes 7 at the upper end and the lower end of the lower annular distribution pipe react with methanol at the center of the gas distributor 102, so that the gas content in the reactor is improved, the dead zone of gas is reduced, enough gas distribution points are ensured, and the working efficiency is greatly improved.
The liquid content in the tower is known through the liquid level meter 103 of the bubbling tower, when the content of the liquid-phase methanol in the bubbling tower reaches the requirement, the liquid-phase feed port pipe stops working, the gas-phase feed port pipe distributes the chlorine in the tower through the gas distributor 102, and the reacted gas and the incompletely reacted gas are discharged from the gas outlet 104 at the top of the tower. When the reaction is finished, the gas phase feed inlet pipe stops feeding, the pressure of the liquid phase is higher than that of the gas phase in the gas distributor 102, the pressure of the liquid phase in the gas distributor is higher than that of the liquid phase, the floating ball 12 in the gas distributor is tightly pressed at the gas inlet pipe orifice, and liquid is prevented from flowing backwards into equipment connected with the gas inlet.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. The utility model provides a prevent gas distributor of double-ring shape distribution pipe that flows backward, its characterized in that includes the intake pipe, and intake pipe one end is the air inlet, and the annular distribution pipe is gone up in the other end connection, and fixed mounting has filtering baffle between the both ends of intake pipe, has placed the floater between filtering baffle and the air inlet, and the intake pipe between floater and the air inlet includes a reducing section at least, and the internal diameter of reducing section diminishes, just is less than the diameter of floater.
2. The gas distributor of the anti-backflow double-ring-shaped distribution pipe according to claim 1, wherein the other end of the gas inlet pipe is fixedly connected with the connecting pipe, the left end of the connecting pipe is fixedly provided with a sealing plate, two sides of the connecting pipe are fixedly connected with the upper ring-shaped distribution pipe, and gas distribution holes on the upper ring-shaped distribution pipe face downwards.
3. The gas distributor of claim 1, wherein the nozzle has two large circular openings with centers on the same horizontal line at one end near the sealing plate, and the upper annular distribution pipe is welded to the large circular openings on the nozzle.
4. The gas distributor of the anti-backflow double-ring-shaped distribution pipe according to claim 1, wherein the bottom of the connecting pipe is provided with a small circular opening, the circle center forms a 90-degree included angle with the circle centers of the two large circular openings, one end of the J-shaped bent pipe is fixedly connected with the small circular opening, and the other end of the J-shaped bent pipe is fixedly connected with the lower ring-shaped distribution pipe.
5. The gas distributor of the anti-backflow double-ring-shaped distribution pipe according to claim 4, wherein the upper ring-shaped distribution pipe and the lower ring-shaped distribution pipe at least comprise two half pipes, the two half pipes are connected through a flange, and the plane of the upper ring-shaped distribution pipe is higher than that of the lower ring-shaped distribution pipe.
6. The gas distributor of the anti-backflow double-ring-shaped distribution pipe according to claim 5, wherein the upper side and the lower side of the lower ring-shaped distribution pipe are provided with gas distribution holes.
7. The gas distributor of the anti-backflow double-ring-shaped distribution pipe according to claim 5, wherein the lower end of the upper ring-shaped distribution pipe is provided with a plurality of rows of gas distribution holes, each row of 5 gas distribution holes have a diameter of 10 mm, and the included angle between the holes is 4 degrees; the gas distribution on the lower annular distribution pipe is 3 in each row, the diameter is 6mm, and the included angle between holes is 4 degrees.
8. A bubble column comprising a liquid distributor and a gas distributor as claimed in any one of claims 1 to 7, wherein the liquid distributor is located below the gas distributor and the liquid outlet of the liquid distributor is located directly below the gas distribution holes of the upper annular distribution pipe.
9. The bubble column of claim 8, wherein the liquid phase feed inlet pipe in the bubble column sprays methanol liquid upwards through the liquid distributor, gas blows a floating ball at the gas inlet, the gas passes through the gas inlet pipe, passes through the filtering baffle plate and enters the gas distributor, flows to the gas distributor at the junction in two directions, flows through the upper annular distribution pipe in one direction, and reacts with methanol through gas distribution holes in the upper annular distribution pipe in a contact manner, so that most of methanol reacts with chlorine, and flows through the lower annular distribution pipe in the other direction, and reacts with methanol in the center of the gas distributor through the gas distribution holes in the upper side and the lower side of the lower annular distribution pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310894999.8A CN116651329A (en) | 2023-07-20 | 2023-07-20 | Gas distributor and bubble column of double-ring distribution pipe of anti-backflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310894999.8A CN116651329A (en) | 2023-07-20 | 2023-07-20 | Gas distributor and bubble column of double-ring distribution pipe of anti-backflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116651329A true CN116651329A (en) | 2023-08-29 |
Family
ID=87713957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310894999.8A Pending CN116651329A (en) | 2023-07-20 | 2023-07-20 | Gas distributor and bubble column of double-ring distribution pipe of anti-backflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116651329A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117225299A (en) * | 2023-11-10 | 2023-12-15 | 江苏博颂能源科技有限公司 | Raw material inlet pipe fitting of propane dehydrogenation device reactor |
-
2023
- 2023-07-20 CN CN202310894999.8A patent/CN116651329A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117225299A (en) * | 2023-11-10 | 2023-12-15 | 江苏博颂能源科技有限公司 | Raw material inlet pipe fitting of propane dehydrogenation device reactor |
| CN117225299B (en) * | 2023-11-10 | 2024-02-09 | 江苏博颂能源科技有限公司 | Raw material inlet pipe fitting of propane dehydrogenation device reactor |
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