CN215842890U - Hydrogenation tower for hydrogen peroxide production - Google Patents
Hydrogenation tower for hydrogen peroxide production Download PDFInfo
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- CN215842890U CN215842890U CN202122149318.4U CN202122149318U CN215842890U CN 215842890 U CN215842890 U CN 215842890U CN 202122149318 U CN202122149318 U CN 202122149318U CN 215842890 U CN215842890 U CN 215842890U
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Abstract
The utility model discloses a hydrogenation tower for producing hydrogen peroxide, which comprises a tower body, wherein the top of the tower body is provided with an air inlet pipe and an emptying pipe, the upper part of the tower body is provided with a liquid inlet pipe, the liquid inlet pipe is connected with a liquid distributor at the upper part of the tower body, the bottom of the tower body is provided with a liquid outlet pipe, at least two reaction layers are arranged in the tower body below the liquid distributor, and a gas-liquid distributor is arranged between the reaction layers; the reaction layer comprises a first catalyst layer, a second catalyst layer and a distribution plate, the height of the first catalyst layer and the height of the second catalyst layer are not more than 30cm, the distribution plate is arranged between the first catalyst layer and the second catalyst layer and is not in contact with the first catalyst layer and the second catalyst layer, and a plurality of uniform cross-shaped liquid outlet holes are formed in the distribution plate.
Description
Technical Field
The utility model relates to the technical field of hydrogenation towers, and particularly belongs to a hydrogenation tower for hydrogen peroxide production.
Background
In the hydrogen peroxide production process, anthraquinone is subjected to hydrogenation reaction under the action of a palladium catalyst. In the catalytic hydrogenation process, certain side reactions (degradation) exist to generate degradation products. Along with the accumulation of degradation products, the physical properties and the catalytic activity of the working solution of the system are influenced, and the material consumption is increased, the product quality is reduced and the like. The design of the hydrogenation tower and the control of the hydrogenation reaction are the key points of safe and economic operation and long-period stable operation of the hydrogen peroxide device.
The existing hydrogenation tower exists in the operation process: the tower diameter ratio of the hydrogenation tower is unreasonable in design, so that the gas-liquid distribution effect in the catalyst layer is poor, the catalyst utilization rate is low, the hydrogenation reaction is poor, and the yield increase and consumption reduction of the device are limited. How to improve the distribution effect of the gas-liquid distributor of the hydrogenation tower, improve the utilization rate of the catalyst and improve the hydrogen oxygen efficiency of the system is an important research topic in hydrogen peroxide production.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hydrogenation tower for hydrogen peroxide production, which overcomes the defects of the prior art.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
a hydrogenation tower for hydrogen peroxide production comprises a tower body, wherein the top of the tower body is provided with an air inlet pipe and an emptying pipe, the upper part of the tower body is provided with a liquid inlet pipe, the liquid inlet pipe is connected with a liquid distributor at the upper part of the tower body, the bottom of the tower body is provided with a liquid outlet pipe, at least two reaction layers are arranged in the tower body below the liquid distributor, and a gas-liquid distributor is arranged between the reaction layers;
the reaction layer includes first catalyst layer, second catalyst layer and distribution plate, and the height on first catalyst layer and second catalyst layer is no longer than 30cm, the distribution plate sets up between first catalyst layer and second catalyst layer, and does not contact with first catalyst layer and second catalyst layer, be equipped with even a plurality of cross drain hole and a plurality of gas-liquid balance pipe on the distribution plate.
Further, evenly be equipped with a plurality of collecting tank on the distributing plate, the bottom of collecting tank is equipped with outstanding distributing plate lower surface toper structure, it sets up in the bottom of collecting tank to go out the liquid hole.
Further, a gas-liquid separator is arranged in the bottom of the tower body, and the liquid outlet pipe is connected with the gas-liquid separator.
Further, be equipped with a plurality of gas-liquid distributor on, the upper end fixed mounting of gas-liquid distributor has the breakwater that shelters from the gas-liquid distributor top.
Furthermore, a plurality of downward spray heads are arranged on the liquid distributor.
Further, the catalyst used in the first catalyst layer and the second catalyst layer is a palladium catalyst.
Compared with the prior art, the utility model has the following implementation effects: according to the hydrogenation tower, the distribution plate is added, and the original catalyst layer is divided into the first catalyst layer and the second catalyst layer, so that the thickness of the catalyst layer is effectively reduced, the problems that the catalyst layer is too thick, the working solution flows downwards unevenly in the catalyst layer and generates stagnant flow are solved, the degradation of anthraquinone is reduced, the scarring of the catalyst is avoided, and the utilization rate of the catalyst is improved; and the liquid collecting groove and the liquid outlet holes arranged on the distribution plate enable working liquid and hydrogen on the distribution plate to uniformly flow to the second catalyst layer, so that the working liquid at each position of the second catalyst layer uniformly flows.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the distribution plate;
fig. 3 is a schematic structural view of a liquid outlet hole.
Description of reference numerals: 1. a tower body; 11. an air inlet pipe; 12. an emptying pipe; 13. a liquid outlet pipe; 2. a liquid distributor; 3. a first catalyst layer; 4. a distribution plate; 41. a liquid outlet hole; 42. a liquid collecting tank; 43. a tapered structure; 44. a gas-liquid balance pipe; 5. a second catalyst layer; 6. a gas-liquid distributor; 7. a gas lift pipe; 8. a gas-liquid separator.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation to be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-3, the hydrogenation tower for hydrogen peroxide production of the present invention comprises a tower body 1, wherein an air inlet pipe 11 and an air release pipe 12 are arranged at the top of the tower body 1, a liquid inlet pipe is arranged at the upper part of the tower body 1, the liquid inlet pipe is connected with a liquid distributor 2 arranged at the upper part of the tower body 1, a plurality of downward spray heads are arranged on the liquid distributor 2, a liquid outlet pipe 13 is arranged at the bottom of the tower body 1, a gas-liquid separator 8 is arranged at the bottom of the tower body 1, the liquid outlet pipe 13 is connected with the gas-liquid separator 8, two reaction layers are arranged in the tower body 1 below the liquid distributor 2, a gas-liquid distributor 6 is arranged between the reaction layers, a plurality of gas lift pipes 7 are arranged on the gas-liquid distributor 6, and a water baffle plate for shielding the tops of the gas lift pipes 7 is fixedly arranged at the upper ends of the gas lift pipes 7.
The reaction layer includes first catalyst layer 3, second catalyst layer 5 and distribution plate 4, the catalyst that first catalyst layer 3 and 5 uses of second catalyst layer is palladium catalyst, the height of first catalyst layer 3 and 5 of second catalyst layer is 23cm respectively, it is highest no more than 30cm, distribution plate 4 sets up between first catalyst layer 3 and 5 of second catalyst layer, and not contact with first catalyst layer 3 and 5 of second catalyst layer, evenly be equipped with a plurality of collecting tank 42 and a plurality of gas-liquid balance pipe 44 on the distribution plate 4, the bottom of collecting tank 42 is equipped with the toper structure 43 of outstanding distribution plate 4 lower surface, set up to be equipped with cross liquid outlet 41 in the bottom of collecting tank 42. The catalyst layer of the distribution plate 4 is divided into the first catalyst layer 3 and the second catalyst layer 5, so that the thickness of the catalyst layer is effectively reduced, the problems that the catalyst layer is too thick, the working solution flows downwards unevenly in the catalyst layer and generates stagnant flow are solved, the degradation of anthraquinone is reduced, the scarring of the catalyst is avoided, and the utilization rate of the catalyst is improved; and the liquid collecting groove and the liquid outlet hole arranged on the distribution plate 4 enable the working liquid and the hydrogen on the distribution plate 4 to uniformly flow to the second catalyst layer 5, so that the working liquid at each position of the second catalyst layer 5 uniformly flows.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a hydrogen peroxide production is with hydrogenation tower, includes the tower body, the tower body top is equipped with intake pipe and blow-down pipe, and upper portion is equipped with the feed liquor pipe, and the feed liquor pipe is connected with the liquid distributor on tower body upper portion, and the tower body bottom is equipped with drain pipe, its characterized in that: at least two reaction layers are arranged in the tower body below the liquid distributor, and a gas-liquid distributor is arranged between the reaction layers;
the reaction layer includes first catalyst layer, second catalyst layer and distribution plate, and the height on first catalyst layer and second catalyst layer is no longer than 30cm, the distribution plate sets up between first catalyst layer and second catalyst layer, and does not contact with first catalyst layer and second catalyst layer, be equipped with even a plurality of cross on the distribution plate and go out the liquid hole.
2. The hydrogenation column according to claim 1, wherein: the liquid distribution plate is characterized in that a plurality of liquid collecting grooves are uniformly formed in the distribution plate, a conical structure protruding out of the lower surface of the distribution plate is arranged at the bottom of each liquid collecting groove, and the liquid outlet holes are formed in the bottom of each liquid collecting groove.
3. The hydrogenation column according to claim 1, wherein: and a gas-liquid separator is arranged in the bottom of the tower body, and the liquid outlet pipe is connected with the gas-liquid separator.
4. The hydrogenation column according to claim 1, wherein: the gas-liquid distributor is provided with a plurality of gas risers, and the upper ends of the gas risers are fixedly provided with water baffles for shielding the tops of the gas risers.
5. The hydrogenation column according to claim 1, wherein: the liquid distributor is provided with a plurality of downward spray heads.
6. The hydrogenation column according to claim 1, wherein: the catalyst used in the first catalyst layer and the second catalyst layer is a palladium catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122149318.4U CN215842890U (en) | 2021-09-07 | 2021-09-07 | Hydrogenation tower for hydrogen peroxide production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122149318.4U CN215842890U (en) | 2021-09-07 | 2021-09-07 | Hydrogenation tower for hydrogen peroxide production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215842890U true CN215842890U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122149318.4U Active CN215842890U (en) | 2021-09-07 | 2021-09-07 | Hydrogenation tower for hydrogen peroxide production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215842890U (en) |
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2021
- 2021-09-07 CN CN202122149318.4U patent/CN215842890U/en active Active
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