Trickle bed reactor convenient for liquid discharge of distribution tank

Abstract

The utility model discloses a trickle bed reactor convenient for liquid discharge of a distribution tank, the trickle bed reactor comprises the distribution tank and a trickle tube arranged at the bottom of the distribution tank, the bottom wall of the distribution tank is provided with a mounting hole, the mounting hole comprises a small-diameter part located at the lower part and a large-diameter part located above the small-diameter part, and a positioning step is arranged between the small-diameter part and the large-diameter part; a connecting ring is arranged at the upper end of the dripping pipe, the dripping pipe is used for being inserted into the mounting hole from top to bottom for mounting, and after the dripping pipe is mounted on the distribution groove, the connecting ring is in contact with the positioning step and fixed to the large-diameter part, and the connecting ring is completely located in the large-diameter part. The installation structure of the distribution groove and the trickle tube is simple, after the trickle tube is installed, the upper end of the trickle tube is completely located in the large-diameter part of the installation hole, and liquid cannot remain in the distribution groove and can be fully utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to trickle bed reactor field especially relates to a trickle bed reactor convenient to distribution tank liquid discharge. BACKGROUND

[0002] Trickle bed reactor is common chemical reactor, liquid phase material flows from top to bottom along gravity direction, and counterflow or parallel flow reaction gas (such as hydrogen) is fully contacted in solid catalyst particle bed layer and reaction occurs.

[0003] Liquid distribution tank as important inner component in trickle bed reactor determines the control of flow, trickle pipe is installed on liquid distribution tank according to certain arrangement mode.

[0004] Common trickle pipe top end is located above the bottom of liquid distribution tank, such as the reference literature with the publication number CN211463089U mentioned a gas, liquid, solid three-phase hydrogenation reaction system, there is uninvolved reactant that cannot be discharged at the end of reaction in the liquid tank, and there is resource waste condition, and causes the risk to subsequent overhaul maintenance, and trickle bed reactor has thousands of trickle pipes to be installed, and it is difficult to realize that the installation height of trickle pipe upper end is uniform, and the control of flow produces negative influence, and such as the reference literature with the publication number CN118988167A, distribution tank needs liquid to be discharged, and the original design trickle pipe fixing structure is located above the bottom surface of distribution tank, and liquid cannot be discharged, and common additional liquid discharge structure needs to be designed.

[0005] The common setting mode of liquid discharge structure is led out from the bottom or sidewall of tube sheet bottom, such as the reference literature with the publication number CN209672919U and the publication number CN111791035. But in the above patent literature, distribution tank is fixed above tube sheet, and if it is necessary to discharge, secondary connection is needed, which is more troublesome. Therefore, a trickle bed reactor that can directly discharge liquid in the distribution tank without secondary connection is needed. INVENTION CONTENTS

[0006] The utility model provides a trickle bed reactor convenient to distribution tank liquid discharge for the above problem.

[0007] The technical scheme adopted by the utility model is as follows:

[0008] A trickle bed reactor convenient to distribution tank liquid discharge, including distribution tank and trickle pipe arranged at the bottom of the distribution tank, the bottom wall of the distribution tank has a mounting hole, the mounting hole includes a small diameter part below and a large diameter part above the small diameter part, and the small diameter part and the large diameter part have a positioning step between them.

[0009] The upper end of the drip pipe has a connecting ring, the drip pipe is inserted into the installation hole from top to bottom for installation, after the drip pipe is installed on the distribution groove, the connecting ring is in contact with the positioning step, the connecting ring is fixed with the large diameter part, and the connecting ring is completely located in the large diameter part.

[0010] The installation structure of the distribution groove and the drip pipe is simple, after the drip pipe is installed, the upper end of the drip pipe is completely located in the large diameter part of the installation hole, liquid cannot be left in the distribution groove, and the distribution groove can be fully utilized.

[0011] In one of the embodiments of the utility model, the connecting ring is welded and fixed with the large diameter part.

[0012] In one of the embodiments of the utility model, the inner side wall of the large diameter part has internal threads, the outer side wall of the connecting ring has external threads, and the external threads are in threaded connection with the internal threads.

[0013] The threaded connection mode is convenient for installation and maintenance.

[0014] In one of the embodiments of the utility model, the upper end face of the drip pipe has an assembly hole for inserting an installation tool.

[0015] In one of the embodiments of the utility model, the assembly hole is an internal hexagonal hole.

[0016] The assembly hole can be used to quickly install the drip pipe on the installation hole by using a hexagonal screw, and installation is more convenient.

[0017] In one of the embodiments of the utility model, a first sealing ring is arranged between the side wall of the connecting ring and the inner side wall of the large diameter part.

[0018] In one of the embodiments of the utility model, a second sealing ring is arranged between the lower end face of the connecting ring and the positioning step.

[0019] The sealing ring can increase the sealing property, so that liquid in the distribution groove can only flow into the drip pipe.

[0020] In one of the embodiments of the utility model, a flow limiting structure is arranged in the drip pipe.

[0021] In one of the embodiments of the utility model, the middle part of the drip pipe has a liquid channel, the upper end face of the connecting ring is recessed towards the center of the connecting ring, and liquid falling into the upper end face of the connecting ring can flow to the middle of the connecting ring and enter the liquid channel under the action of gravity.

[0022] In this way, the utilization rate of liquid can be further improved, and a small amount of liquid accumulated between the connecting ring and the large diameter part can fall into the liquid channel more conveniently.

[0023] In actual application, the upper end surface of the connecting ring can be conical, and the upper end inlet of the liquid channel is located at the lowermost end of the upper end surface of the connecting ring.

[0024] In one of the embodiments of the utility model, the column pipe is further included, and the upper end of the column pipe is connected with the drop pipe.

[0025] The application has the advantages that the installation structure of the distribution groove and the drop pipe is simple, the upper end of the drop pipe is completely located in the large-diameter part of the mounting hole after installation, liquid cannot be left in the distribution groove, and the distribution groove can be fully utilized. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a partial sectional view of the trickle bed reactor convenient for the distribution groove to drain liquid;

[0027] Figure 2 is Figure 1 is an enlarged view of A in FIG. 1;

[0028] Figure 3 is a top view of the drop pipe;

[0029] Figure 4 is Figure 2 is a schematic view of the structure after the assembly hole is added;

[0030] Figure 5 is Figure 2 is a schematic view of the structure after the first sealing ring is added;

[0031] Figure 6 is Figure 2 is a schematic view of the structure after the second sealing ring is added;

[0032] Figure 7 is Figure 2 is a schematic view of the structure after the first sealing ring and the second sealing ring are added;

[0033] Figure 8 is Figure 6 is a schematic view of the structure when the upper end surface of the connecting ring is recessed to the middle part.

[0034] The reference signs in the drawings are as follows:

[0035] 1, distribution groove; 11, mounting hole; 111, small-diameter part; 112, large-diameter part; 113, positioning step; 2, drop pipe; 21, connecting ring; 211, assembly hole; 212, lower end surface of the connecting ring; 213, upper end surface of the connecting ring; 22, liquid channel; 3, column pipe; 41, first sealing ring; 42, second sealing ring. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0037] In the description of the present application, it should be noted that the positions or location relationships indicated by the terms "inner", "outer" and the like are based on the positions or location relationships shown in the drawings, or the positions or location relationships in which the products of the present application are usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated devices or elements must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected, can be directly connected, or indirectly connected through an intermediate medium, can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] The present application will be described in detail below in conjunction with the drawings.

[0040] As shown in Figure 1 and 2 A trickle bed reactor facilitating liquid drainage of a distribution tank, comprising a distribution tank 1 and a trickle pipe 2 arranged at the bottom of the distribution tank 1, the bottom wall of the distribution tank 1 has a mounting hole 11, the mounting hole 11 comprises a small-diameter part 111 located below and a large-diameter part 112 located above the small-diameter part 111, and the small-diameter part 111 and the large-diameter part 112 have a positioning step 113 therebetween;

[0041] The upper end of the trickle pipe 2 has a connecting ring 21, the trickle pipe 2 is used to be inserted into the mounting hole 11 from top to bottom for installation, after the trickle pipe 2 is installed on the distribution tank 1, the connecting ring 21 is in contact with the positioning step 113, the connecting ring 21 is fixed with the large-diameter part 112, and the connecting ring 21 is completely located in the large-diameter part 112.

[0042] The installation structure of the distribution tank 1 and the trickle pipe 2 of the present application is relatively simple, after the trickle pipe 2 is installed, the upper end of the trickle pipe 2 is completely located in the large-diameter part 112 of the mounting hole 11, liquid will not be left in the distribution tank 1, and the distribution tank 1 can be fully utilized.

[0043] In one embodiment, the connecting ring 21 is welded and fixed to the large-diameter portion 112.

[0044] In one embodiment, the inner wall of the large-diameter portion 112 has an internal thread, and the outer wall of the connecting ring 21 has an external thread, with the external thread and the internal thread being threadedly connected. This threaded connection method facilitates installation and maintenance.

[0045] like Figure 3 and 4 As shown, in one embodiment, the upper end face of the drip tube 2 has an assembly hole 211 for inserting an installation tool. For example, the assembly hole can be an internal hexagonal socket. The assembly hole 211 allows the drip tube 2 to be quickly installed onto the mounting hole 11 using a Phillips head screw, making installation relatively convenient.

[0046] like Figure 5 As shown, in one embodiment, a first sealing ring 41 is provided between the side wall of the connecting ring 21 and the inner side wall of the large diameter portion 112.

[0047] like Figure 6 As shown, in one embodiment, a second sealing ring 42 is provided between the lower end face 212 of the connecting ring and the positioning step 113.

[0048] like Figure 7 As shown, in one embodiment, a first sealing ring 41 is provided between the side wall of the connecting ring 21 and the inner side wall of the large diameter portion 112, and a second sealing ring 42 is provided between the lower end face 212 of the connecting ring and the positioning step 113.

[0049] Setting a sealing ring can increase the sealing performance, so that the liquid in the distribution tank 1 can only flow into the drip tube 2.

[0050] In one embodiment, the drip tube 2 is provided with a flow-limiting structure inside.

[0051] like Figure 8 As shown, in one embodiment, the drip tube 2 has a liquid channel 22 in the middle, and the upper end face 213 of the connecting ring is recessed towards the center of the connecting ring 21. Liquid falling into the upper end face 213 of the connecting ring can flow to the middle of the connecting ring 21 under the action of gravity and enter the liquid channel 22. This arrangement can further improve the utilization rate of liquid, allowing the small amount of liquid accumulated between the connecting ring 21 and the large diameter portion 112 to fall into the liquid channel 22 more easily.

[0052] In practical applications, the upper end face 213 of the connecting ring can be conical, and the upper inlet of the liquid channel 22 is located at the lower end of the upper end face 213 of the connecting ring.

[0053] like Figure 1 As shown, in one embodiment, the system further includes a tube 3, the upper end of which is connected to the drip tube 2.

[0054] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent protection scope of the present application. Any equivalent structural transformation, direct or indirect application in other related technical fields, and the like, are all included in the protection scope of the present application.

Claims

1. A trickle bed reactor facilitating liquid distribution from a distribution channel, comprising a distribution channel and a trickle tube provided at the bottom of the distribution channel, characterized in that, The bottom wall of the distribution tank has a mounting hole, which includes a small-diameter part located below and a large-diameter part located above the small-diameter part, and has a positioning step between the small-diameter part and the large-diameter part; The upper end of the drip pipe has a connecting ring, the drip pipe is inserted into the mounting hole from top to bottom for installation, after the drip pipe is installed on the distribution tank, the connecting ring is in contact with the positioning step, the connecting ring is fixed with the large-diameter part, and the connecting ring is completely located in the large-diameter part.

2. The ebullated bed reactor with facilitated distribution of the liquid from the channels as claimed in claim 1, characterized in that, The connecting ring is welded and fixed with the large-diameter part.

3. The ebullated bed reactor with facilitated distribution of the liquid from the channels as claimed in claim 1, wherein, The inner side wall of the large-diameter part has an internal thread, and the outer side wall of the connecting ring has an external thread, which is screwed with the internal thread.

4. The ebullated bed reactor of claim 3, wherein the distribution spool is configured to provide a liquid flow rate of about 0.1 to about 10 gallons per minute per foot of the distribution spool. The upper end surface of the drip pipe has an assembly hole for inserting an installation tool.

5. The ebullated bed reactor of claim 4, wherein the distribution spool is configured to provide a substantially uniform liquid level across the reactor. The assembly hole is an internal hexagonal hole. ​ 6. The ebullated bed reactor of claim 1, wherein, A first sealing ring is arranged between the side wall of the connecting ring and the inner side wall of the large-diameter part.

7. The ebullated bed reactor of claim 1, wherein the distribution trough is configured to provide a liquid level in the distribution trough that is at least 1.5 times the height of the distribution trough. A second sealing ring is arranged between the lower end surface of the connecting ring and the positioning step. ​ 8. The ebullated bed reactor of claim 1, wherein, The drip pipe is internally provided with a flow limiting structure.

9. The ebullated bed reactor of claim 1, wherein, The middle part of the drip pipe has a liquid channel, the upper end surface of the connecting ring is recessed towards the center of the connecting ring, and the liquid falling into the upper end surface of the connecting ring can flow to the middle of the connecting ring and enter the liquid channel under the action of gravity.

10. The ebullated bed reactor of claim 1, wherein, Further comprising a column pipe, the upper end of the column pipe is in butt joint with the drip pipe.

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