Hydrogenation reactor

Abstract

The invention provides a hydrogenation reactor which can enable materials input by the hydrogenation reactor to be mixed with hydrogen more sufficiently. The invention relates to a hydrocarbon reactor, which comprises a cylinder, one end of the cylinder is provided with a feeding section connected with a feeding port, the feeding port is used for inputting hydrocarbon substances, the other end of the cylinder is provided with a discharging section connected with a discharging port, and a catalyst bed section is arranged in the middle of the cylinder. A plurality of venturi tubes are uniformly arranged on the partition plate, the middle parts of the venturi tubes are shrunk inwards to form throat parts, and the feeding section and the catalyst bed section are communicated with each other through the venturi tubes; a Venturi tube is arranged in the cylinder body, a hydrogen input port is further formed in the cylinder body, the hydrogen input port is connected with a hydrogenation pipeline extending into the cylinder body, the throat part of the Venturi tube is connected with the hydrogenation pipeline, and the hydrogenation pipeline is tangent to the throat part of the Venturi tube.

Description

Technical Field

[0001] The invention relates to the technical field of petrochemical equipment, in particular to a hydrogenation reactor. Background Art

[0002] In the field of petrochemicals, hydrocarbon materials, such as diesel, can be subjected to hydrogenation reactions to remove impurities in the hydrocarbon materials. Generally speaking, a hydrogenation reactor is required to carry out the hydrogenation reaction of hydrocarbon materials. Existing hydrogenation reactors generally include a cylinder, one end of which is provided with a discharge port, and the other end is provided with a feed port. The feed port is used to input hydrogen and hydrocarbon materials, and the hydrocarbon materials react with hydrogen through the catalyst section in the middle of the cylinder. In actual production, if the input hydrogen and hydrocarbon materials are not mixed sufficiently, the hydrogenation reaction will be affected. Summary of the invention

[0003] In order to solve the problem of how to make the input hydrogen and hydrocarbon materials mix more fully, the present invention provides a hydrogenation reactor, which can make the input materials and hydrogen of the hydrogenation reactor mix more fully.

[0004] The technical solution is as follows: a hydrogenation reactor, comprising a cylinder, one end of which is provided with a feed section connected to a feed port for inputting hydrocarbon substances, and the other end is provided with a discharge section connected to a discharge port, and a catalyst bed section is provided in the middle of the cylinder, characterized in that: the feed section and the catalyst bed section are separated by a partition, a plurality of venturi tubes are evenly arranged on the partition, the middle part of the venturi tube is inwardly contracted to form a throat, and the feed section and the catalyst bed section are interconnected through the venturi tube; a hydrogen inlet is also provided on the cylinder, the hydrogen inlet is connected to a hydrogenation pipeline extending into the cylinder, the throat of the venturi tube is connected to the hydrogenation pipeline, and the hydrogenation pipeline is tangent to the throat of the venturi tube.

[0005] It is further characterized by: The hydrogenation pipeline comprises a main pipeline and a branch pipeline, wherein the main pipeline is connected to the hydrogen inlet, the branch pipelines are multiple and are respectively connected to the main pipeline, and the branch pipelines are connected to the throat of the venturi tube and are tangent to each other; The hydrogen inlet is arranged at two opposite ends of the cylinder and connected to the hydrogenation pipeline respectively, and the hydrogenation pipeline extends to the front and rear ends of the venturi tube respectively and is connected thereto; A baffle plate is provided in the discharging section, which extends inwardly to form a horizontal baffle plate and then bends upward and extends to form a vertical baffle plate. The vertical baffle plate encloses a discharging channel. The vertical baffle plate, the cylinder body and the horizontal baffle plate enclose a deflection channel. The discharging port includes a gas phase outlet and a liquid phase outlet. The gas phase outlet is provided at the top of the cylinder body, and the liquid phase outlet is provided at the end of the deflection channel.

[0006] After adopting such a structure, by using a venturi tube to assist the material to enter the cylinder, negative pressure can be generated in the throat of the venturi tube during the flow of the material, so that the hydrogen in the hydrogenation pipeline can be accelerated to be sucked into the venturi tube from the throat to be better mixed with the material. At the same time, since the hydrogenation pipeline is tangent to the venturi tube, the hydrogen enters the venturi tube tangentially to stir the material, which can produce a stirring effect and can be better mixed with the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle; Figure 3 for Figure 1 The enlarged schematic diagram of point B in the middle; Figure 4 Schematic diagram of the connection between the branch pipe and the throat of the Venturi tube. DETAILED DESCRIPTION

[0008] like Figure 1 The hydrogenation reactor shown in the figure comprises a cylinder 1, one end of which is provided with a feed section 3 connected to a feed port 2 for inputting hydrocarbon substances, and the other end of which is provided with a discharge section 4 connected to a discharge port, and a catalyst bed section 5 is provided in the middle of the cylinder 1. Figure 2 The feed section 3 and the catalyst bed section 5 are separated by a partition 6, and a plurality of venturi tubes 7 are evenly arranged on the partition 6. The venturi tube 7 is a pipe that is wide at both ends and narrow in the middle. The middle part of the venturi tube 7 is contracted to form a throat. The feed section 3 and the catalyst bed section 5 are interconnected through the venturi tube 7. The cylinder 1 is also provided with a hydrogen inlet 8, which is connected to a hydrogenation pipeline 9 extending into the cylinder. The throat of the venturi tube 7 is connected to the hydrogenation pipeline 9, and the hydrogenation pipeline 9 is tangent to the throat of the venturi tube 7. Specific combination Figure 4 The hydrogenation pipeline 9 includes a main pipeline and a branch pipeline 10. The main pipeline is connected to the hydrogen inlet 8. The branch pipelines 10 have multiple branches and are respectively connected to the main pipeline. The branch pipelines 10 are connected to the throat of the venturi tube 7 and are tangent to each other. In this way, when the material flows through the venturi tube 7, a negative pressure is generated in the throat to accelerate the entry of hydrogen. The tangent pipeline allows the gas to stir the material along the throat after entering the venturi tube, which helps to mix it fully.

[0009] Furthermore, hydrogen inlet ports 8 are provided at opposite ends of the cylinder 1 and are respectively connected to hydrogenation pipes 9, which extend to the front and rear ends of the venturi tube 7 and are connected thereto. By providing multiple pipes to increase the number of hydrogen inlet ports of the venturi tube, hydrogen stirring of the materials is further enhanced, thereby facilitating mixing.

[0010] In addition, if Figure 1, Figure 3 As shown, a baffle plate is provided in the discharging section 4, which extends inwardly to form a horizontal baffle plate 11 and then bends upward and extends to form a vertical baffle plate 12. The vertical baffle plate 12 encloses a discharging channel 13. The vertical baffle plate 12, the cylinder 1, and the horizontal baffle plate 11 enclose a deflection channel 14. The discharging port includes a gas phase outlet 15 and a liquid phase outlet 16. The gas phase outlet 15 is provided at the top of the cylinder 1, and the liquid phase outlet 16 is provided at the end of the deflection channel 14. In this way, the discharging material is blocked by the baffle plate and rises along the discharging channel 13. After the liquid level is higher than the vertical baffle plate 12, it will enter the deflection channel 14 and descend, while part of the gas will not descend. Such a setting can play a certain role in gas-liquid separation and reduce the mixed gas in the discharging material.

[0011] The above are only preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by anyone familiar with the technology within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A hydrogenation reactor, comprising a cylinder, one end of which is provided with a feed section connected to a feed port, the feed port being used to input hydrocarbon substances, the other end of which is provided with a discharge section connected to a discharge port, and a catalyst bed section being provided in the middle of the cylinder, characterized in that: The feed section and the catalyst bed section are separated by a partition, and a plurality of venturi tubes are evenly arranged on the partition. The middle part of the venturi tube is contracted to form a throat, and the feed section and the catalyst bed section are interconnected through the venturi tube; a hydrogen inlet is also provided on the cylinder body, and the hydrogen inlet is connected to a hydrogenation pipeline extending into the cylinder body, and the throat of the venturi tube is connected to the hydrogenation pipeline, and the hydrogenation pipeline is tangent to the throat of the venturi tube.

2. The hydrogenation reactor according to claim 1, characterized in that: The hydrogenation pipeline includes a main pipeline and a branch pipeline. The main pipeline is connected to the hydrogen input port. There are a plurality of branch pipelines which are respectively connected to the main pipeline. The branch pipelines are connected to the throat of the venturi tube and are tangent to it.

3. The hydrogenation reactor according to claim 1 or 2, characterized in that: The hydrogen inlet is arranged at two opposite ends of the cylinder and are respectively connected to the hydrogenation pipelines, and the hydrogenation pipelines extend to the front and rear ends of the venturi tube and are respectively connected thereto.

4. The hydrogenation reactor according to claim 1, characterized in that: A baffle plate is provided in the discharging section, which extends inwardly to form a horizontal baffle plate and then bends upward and extends to form a vertical baffle plate. The vertical baffle plate encloses a discharging channel. The vertical baffle plate, the cylinder body and the horizontal baffle plate enclose a deflection channel. The discharging port includes a gas phase outlet and a liquid phase outlet. The gas phase outlet is provided at the top of the cylinder body, and the liquid phase outlet is provided at the end of the deflection channel.

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