Pre-hydrogenation reaction device

Abstract

The utility model provides a pre-hydrogenation reaction device which comprises a pre-hydrogenation reactor body and is characterized in that a feeding pipe of the pre-hydrogenation reactor body is fixedly connected with a three-way connecting pipe, and the left upper end and the right upper end of the three-way connecting pipe are respectively and fixedly connected with a first electromagnetic valve; hydrogenation catalyst protection assemblies are respectively arranged at the upper ends of the first electromagnetic valves; the output end of the hydrogenation catalyst protection assembly is fixedly connected with the upper end of the first electromagnetic valve; the input end of the hydrogenation catalyst protection assembly is fixedly connected with a second electromagnetic valve, and the inner end between the second electromagnetic valves is fixedly connected with a three-way pipe. Due to the arrangement of the treatment cylinder, the cylinder cover, the filter cylinder, the annular stop block, the filter particle layer, the input pipe and the output pipe, the effect of replacing a protective agent without shutdown is favorably realized, and the problem that the production efficiency of the pre-hydrogenation reaction device is influenced can be effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pre-hydrogenation reactors, in particular to a pre-hydrogenation reaction device. Background Art

[0002] The pre-hydrogenation reaction device is a fixed bed reactor. Since the device starts to be used, the bed pressure difference will continue to rise. When the pressure difference reaches the limit, the device must be stopped and the catalyst bed must be skimmed. This problem is one of the constraints affecting the long-term operation of the device. In order to solve this problem, it is generally necessary to install a pre-hydrogenation catalyst protection tank at the input end of the device. The impurities in the raw materials can be removed by the protective agent inside the tank, thereby avoiding the problem of catalyst bed blockage caused by various impurities in the raw materials, thereby effectively extending the service life of the device. However, there are still some problems with the existing pre-hydrogenation catalyst protection tanks during actual use. For example, when the pressure in the pre-hydrogenation catalyst protection tank reaches the limit, the staff needs to stop the machine to replace the protective agent in the pre-hydrogenation catalyst protection tank. Since the replacement of the protective agent takes a certain amount of time, it may affect the production efficiency of the pre-hydrogenation reaction device. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the utility model provides a pre-hydrogenation reaction device, which can achieve the effect of replacing the protective agent without stopping, and can effectively avoid the problem that the production efficiency of the pre-hydrogenation reaction device is affected.

[0004] The technical solution is as follows: a pre-hydrogenation reaction device, including a pre-hydrogenation reactor body, characterized in that a three-way connecting pipe is fixedly connected to the feed pipe of the pre-hydrogenation reactor body, and the upper left end and the upper right end of the three-way connecting pipe are respectively fixedly connected to the first solenoid valve, wherein the upper end of the first solenoid valve is respectively provided with a hydrogenation catalyst protection component; the output end of the hydrogenation catalyst protection component is respectively fixedly connected to the upper end of the first solenoid valve; the input end of the hydrogenation catalyst protection component is respectively fixedly connected to the second solenoid valve, and the inner end between the second solenoid valves is fixedly connected to the three-way pipe.

[0005] Preferably, the hydrogenation catalyst protection components respectively include a treatment cylinder, the upper end of the treatment cylinder is sealed and detachably fixedly connected with a cylinder cover, and the lower middle part of the cylinder cover is detachably fixedly connected with a filter cylinder, wherein an annular stopper is integrally connected to the upper side of the outer wall of the filter cylinder; the annular stopper is sealingly slidably arranged inside the treatment cylinder; liquid inlets are respectively provided in sequence from top to bottom on the surrounding parts of the upper side of the interior of the filter cylinder, and the liquid inlets are all located on the upper side of the annular stopper; liquid outlets are respectively provided on the surrounding parts of the lower side of the interior of the filter cylinder; the interior of the filter cylinder is filled with a filter particle layer; an input pipe is integrally connected to the opening on the upper right side of the treatment cylinder, and the input pipe is located on the upper side of the annular stopper; an output pipe is integrally connected to the opening in the lower middle part of the treatment cylinder.

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] In the utility model, the arrangement of the treatment cylinder, cylinder cover, filter cylinder, annular block, filter particle layer, input pipe and output pipe is conducive to achieving the effect of replacing the protective agent without stopping the machine, and can effectively avoid the problem of affecting the production efficiency of the pre-hydrogenation reaction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model.

[0009] Figure 2 It is a structural schematic diagram of the hydrogenation catalyst protection component of the utility model.

[0010] In the figure:

[0011] 1. Pre-hydrogenation reactor body; 2. Three-way connecting pipe; 3. First solenoid valve; 4. Hydrogenation catalyst protection assembly; 41. Treatment cylinder; 42. Cylinder cover; 43. Filter cylinder; 44. Annular stopper; 45. Filter particle layer; 46. Input pipe; 47. Output pipe; 5. Second solenoid valve; 6. Three-way pipe. DETAILED DESCRIPTION

[0012] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1 and attached Figure 2 As shown, a pre-hydrogenation reaction device includes a pre-hydrogenation reactor body 1, a three-way connecting pipe 2 is fixedly connected to the feed pipe of the pre-hydrogenation reactor body 1, and the upper left end and the upper right end of the three-way connecting pipe 2 are respectively fixedly connected to the first solenoid valve 3, wherein the upper end of the first solenoid valve 3 is respectively provided with a hydrogenation catalyst protection component 4; the output end of the hydrogenation catalyst protection component 4 is respectively fixedly connected to the upper end of the first solenoid valve 3; the input end of the hydrogenation catalyst protection component 4 is respectively fixedly connected to the second solenoid valve 5, and the inner end between the second solenoid valves 5 is fixedly connected to the three-way pipe 6.

[0013] Among them, the hydrogenation catalyst protection component 4 includes a treatment cylinder 41, the upper end of the treatment cylinder 41 is sealed and detachably fixedly connected with a cylinder cover 42, and the lower middle part of the cylinder cover 42 is detachably fixedly connected with a filter cylinder 43, wherein the upper side of the outer wall of the filter cylinder 43 is integrally connected with an annular stopper 44; the annular stopper 44 is sealingly slidably arranged inside the treatment cylinder 41; liquid inlets are respectively opened in sequence from top to bottom on the surrounding parts of the upper side of the interior of the filter cylinder 43, and the liquid inlets are all located on the upper side of the annular stopper 44; liquid outlets are respectively opened on the surrounding parts of the lower side of the interior of the filter cylinder 43; the interior of the filter cylinder 43 is filled with a filter particle layer 45; the upper right opening of the treatment cylinder 41 is integrally connected with an input pipe 46, and the input pipe 46 is located on the upper side of the annular stopper 44; the lower middle opening of the treatment cylinder 41 is integrally connected with an output pipe 47.

[0014] In this embodiment, specifically, the lower end of the output pipe 47 is sealed and fixedly connected to the upper end of the first solenoid valve 3 .

[0015] In this embodiment, specifically, the inner ends of the input pipes 46 are respectively connected to the outer ends of the second solenoid valves 5 in a sealed and fixed manner.

[0016] In this embodiment, specifically, the processing cylinder 41 is a stainless steel cylinder with a circular cross section.

[0017] In this embodiment, specifically, the filter cartridge 43 is a stainless steel cartridge with an open upper end.

[0018] In this embodiment, specifically, the annular stopper 44 is an annular stainless steel block adapted to the interior of the treatment cylinder 41 .

[0019] In this embodiment, specifically, the filtering particle layer 45 adopts a SCST-503 type hydrogenation catalyst protective agent particle layer.

[0020] In this embodiment, specifically, the first solenoid valve 3 and the second solenoid valve 5 are electrically connected to an external control panel respectively.

[0021] In this embodiment, specifically, the upper end of the three-way pipe 6 is connected to the output end pipeline of the external material pump.

[0022] In the present embodiment, when it is necessary to replace the filtering particle layer 45 on the left side, the operator can control the first solenoid valve 3 and the second solenoid valve 5 on the left side to close through the external control panel, and control the first solenoid valve 3 and the second solenoid valve 5 on the right side to open at the same time. At this time, the raw material will pass through the three-way pipe 6, the second solenoid valve 5 and the input pipe 46 to enter the processing cylinder 41 on the right side. Because the annular stopper 44 is sealed inside the processing cylinder 41, the raw material will enter the filtering particle layer 45 through the liquid inlet, and the impurities in the raw material can be removed by filtering the particle layer 45. Then the raw material will be discharged from the inside of the filter cylinder 43 through the liquid outlet, and enter the pre-hydrogenation reactor body 1 through the output pipe 47, the first solenoid valve 3 and the three-way connecting pipe 2. When the left After the first solenoid valve 3 and the second solenoid valve 5 on the side are closed, the operator can remove the barrel cover 42 on the left side, and then lift the barrel cover 42 upwards to make the barrel cover 42 drive the filter barrel 43 to move out from the interior of the treatment barrel 41. Then the operator can remove the filter barrel 43 and replace the filter particle layer 45. In the process of replacing the filter particle layer 45 on the left side, the raw material can be filtered through the filter particle layer 45 on the right side. Similarly, in the process of replacing the filter particle layer 45 on the right side, the raw material can be filtered through the filter particle layer 45 on the left side, thereby eliminating the need to shut down the pre-hydrogenation reactor body 1, thereby achieving the effect of replacing the protective agent without shutting down, and effectively avoiding the problem of affecting the production efficiency of the pre-hydrogenation reaction device.

[0023] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A pre-hydrogenation reaction device, comprising a pre-hydrogenation reactor body (1), characterized in that: A three-way connecting pipe (2) is fixedly connected to the feed pipe of the pre-hydrogenation reactor body (1), and the upper left end and the upper right end of the three-way connecting pipe (2) are respectively fixedly connected to the first solenoid valve (3), wherein the upper end of the first solenoid valve (3) is respectively provided with a hydrogenation catalyst protection component (4); the output end of the hydrogenation catalyst protection component (4) is respectively fixedly connected to the upper end of the first solenoid valve (3); the input end of the hydrogenation catalyst protection component (4) is respectively fixedly connected to the second solenoid valve (5), and the inner end between the second solenoid valves (5) is fixedly connected to the three-way pipe (6).

2. The pre-hydrogenation reaction device according to claim 1, characterized in that: The hydrogenation catalyst protection assembly (4) comprises a treatment cylinder (41), the upper end of the treatment cylinder (41) is sealed and detachably fixedly connected to a cylinder cover (42), and the lower middle part of the cylinder cover (42) is detachably fixedly connected to a filter cylinder (43), wherein an annular stopper (44) is integrally connected to the upper side of the outer wall of the filter cylinder (43); the annular stopper (44) is sealingly slidably arranged inside the treatment cylinder (41); liquid inlets are respectively provided in the surrounding parts of the upper side of the inside of the filter cylinder (43) from top to bottom, and the liquid inlets are all located on the upper side of the annular stopper (44); liquid outlets are respectively provided in the surrounding parts of the lower side of the inside of the filter cylinder (43); the inside of the filter cylinder (43) is filled with a filter particle layer (45); an input pipe (46) is integrally connected to the opening of the upper right side of the treatment cylinder (41), and the input pipe (46) is located on the upper side of the annular stopper (44); and an output pipe (47) is integrally connected to the opening of the lower middle part of the treatment cylinder (41).

3. The pre-hydrogenation reaction device according to claim 2, characterized in that: The lower end of the output pipe (47) is respectively connected to the upper end of the first solenoid valve (3) in a sealed and fixed manner.

4. The pre-hydrogenation reaction device according to claim 3, characterized in that: The inner ends of the input pipes (46) are respectively connected to the outer ends of the second solenoid valves (5) in a sealed and fixed manner.

5. The pre-hydrogenation reaction device according to claim 4, characterized in that: The processing cylinder (41) is a stainless steel cylinder with a circular cross section.

6. The pre-hydrogenation reaction device according to claim 5, characterized in that: The filter cylinder (43) is a stainless steel cylinder with an open upper end.

7. The pre-hydrogenation reaction device according to claim 2, characterized in that: The annular stopper (44) is an annular stainless steel block adapted to the interior of the treatment cylinder (41).

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