CN214106873U

CN214106873U - Cold hydrogen pipe for petrochemical reactor

Info

Publication number: CN214106873U
Application number: CN202023052636.0U
Authority: CN
Inventors: 张大伟
Original assignee: Hebei Oukai Petrochemical Equipment Co ltd
Current assignee: Hebei Oukai Petrochemical Equipment Co ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-09-03
Anticipated expiration: 2030-12-17

Abstract

The utility model relates to a petrochemical technical field especially relates to a petrochemical reactor is with cold hydrogen pipe. The catalyst bed is characterized in that a conical cover is arranged at the bottom of the gas distribution pipe, four groups of notches are distributed on the periphery of the conical cover, a support frame is arranged in the gas distribution pipe, a flow distribution rod is fixedly arranged in the middle of the support frame, a conical block is arranged at the top of the flow distribution rod, the small end of the conical block faces an exhaust hole, when cold hydrogen is exhausted from the exhaust hole in the ring pipe, the cold hydrogen firstly passes through the conical block, air flow is scattered under the action of the conical block and then exhausted from the notches on the periphery of the conical cover, the exhausted cold hydrogen is large in laying area and uniform, and the catalyst bed can be guaranteed to perform catalytic work in a high-activity state; the air inlet pipe right-hand member is provided with the sealed tube, connect the left side and be provided with the seal groove, loosen the bolt that connects during the maintenance, can extract the air inlet pipe from the reactor in, the air inlet pipe right-hand member is less than the connecting tube internal diameter, makes things convenient for follow-up maintenance work.

Description

Cold hydrogen pipe for petrochemical reactor

Technical Field

The utility model relates to a petrochemical technical field especially relates to a petrochemical reactor is with cold hydrogen pipe.

Background

The reactor is a core device in the hydrocracking device, the operation is carried out under the conditions of high temperature, high pressure, hydrogen presence and H2S corrosion regulation, the reasonability of the piping design plays a crucial role in the safe operation and maintenance of the reactor and the normal operation of the whole device, and cold hydrogen is injected into the reactor through a cold hydrogen pipe to control the temperature of a catalyst bed and maintain the activity of the catalyst bed, so that the temperature of the reactor is controlled.

A plurality of exhaust holes are formed in the existing cold hydrogen pipe, cold hydrogen is directly exhausted from the exhaust holes, and the exhausted cold hydrogen is not uniformly distributed, so that the activity of a catalyst bed is influenced, and the reaction efficiency is low.

Intake pipe and cold hydrogen pipe pass through flange joint inside the reactor, when overhauing it, need extract the intake pipe, because of being provided with the flange in the intake pipe, the intake pipe can't be extracted, influences follow-up maintenance work.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to the technical insufficiency, a petrochemical reactor cold hydrogen pipe is provided, including the gas distribution pipe bottom is provided with the taper cover, four groups of incisions are distributed on the periphery of the taper cover, the gas distribution pipe is internally provided with the support frame, the middle part of the support frame is fixedly provided with the shunt rod, the top of the shunt rod is provided with the taper block, the small end of the taper block faces the exhaust hole, when cold hydrogen is discharged from the exhaust hole on the ring pipe, the cold hydrogen firstly passes through the taper block, breaks up the air flow under the action of the taper block, and then is discharged from the incision on the periphery of the taper cover, the discharged cold hydrogen laying area is large, and the cold hydrogen is more uniform, thereby ensuring that the catalyst bed can perform catalytic work in a high-activity state; the air inlet pipe right-hand member is provided with the sealed tube, connect the left side and be provided with the seal groove, loosen the bolt that connects during the maintenance, can extract the air inlet pipe from the reactor in, the air inlet pipe right-hand member is less than the connecting tube internal diameter, makes things convenient for follow-up maintenance work.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: comprises a reactor, an air inlet pipe, a hydrogen cooling ring pipe and a bolt; one side of the reactor is provided with a connecting pipe; the air inlet pipe penetrates through the middle part of the connecting pipe; the air inlet pipe is connected with the connecting pipe through a flange; the cold hydrogen ring pipe is arranged in the reactor; the left side of the cold hydrogen ring pipe is provided with a joint; the left end of the joint and the right end of the air inlet pipe are fixedly locked through bolts; a plurality of exhaust holes are formed below the cold hydrogen ring pipe; and the exhaust hole is provided with an air distribution pipe.

Further optimizing the technical scheme, the right end of the air inlet pipe is provided with a sealing pipe; a sealing groove is formed in the left side of the joint; the outer diameter of the sealing pipe is equal to the inner diameter of the sealing groove; the sealing pipe is arranged in the sealing groove and is in contact sealing with the inner wall of the sealing groove through the outer wall of the sealing pipe; the outer diameter of the sealing pipe is smaller than that of the connecting pipe.

Further optimizing the technical scheme, a nut is welded above the joint; the bolt is arranged on the nut and used for fixing and locking the sealing pipe left and right.

Further optimizing the technical scheme, the bottom of the gas distribution pipe is provided with a conical cover; four groups of notches are distributed on the periphery of the conical cover.

Further optimizing the technical scheme, a support frame is arranged in the gas distribution pipe; a shunt rod is fixedly arranged in the middle of the support frame; the top of the shunt rod is provided with a conical block; the small end of the conical block faces the exhaust hole.

Compared with the prior art, the utility model has the advantages of it is following:

1. the catalyst bed is characterized in that a conical cover is arranged at the bottom of the gas distribution pipe, four groups of notches are distributed on the periphery of the conical cover, a support frame is arranged in the gas distribution pipe, a flow distribution rod is fixedly arranged in the middle of the support frame, a conical block is arranged at the top of the flow distribution rod, the small end of the conical block faces towards the exhaust hole, when cold hydrogen is exhausted from the exhaust hole in the ring pipe, the cold hydrogen firstly passes through the conical block and breaks up airflow under the action of the conical block and then is exhausted from the notches on the periphery of the conical cover, the exhausted cold hydrogen is large in laying area and uniform, and the catalyst bed can be guaranteed to perform catalytic work in a high-activity state.

2. The intake pipe right-hand member is provided with the sealed tube, connect the left side and be provided with the seal groove, through sealed tub of outer wall and seal groove inner wall contact seal, loosen the bolt that connects during the maintenance, can extract the intake pipe from the reactor, the intake pipe right-hand member is less than the connecting tube internal diameter, makes things convenient for follow-up maintenance work.

Drawings

Fig. 1 is a schematic view of the installation position of a cold hydrogen pipe for a petrochemical reactor.

FIG. 2 is a partial structural sectional view of a joint connection portion of an air inlet pipe of a cold hydrogen pipe and a cold hydrogen ring pipe for a petrochemical reactor.

Fig. 3 is a schematic view of the installation position of a gas distribution pipe of a cold hydrogen pipe for a petrochemical reactor.

Fig. 4 is a partial sectional view of the internal structure of a gas distribution pipe of a cold hydrogen pipe for a petrochemical reactor.

In the figure: 1. a reactor; 101. a connecting pipe; 2. an air inlet pipe; 201. a sealing tube; 3. a cold hydrogen ring pipe; 301. a joint; 302. an exhaust hole; 303. a sealing groove; 4. a bolt; 5. a flange; 6. an air distribution pipe; 601. a conical cover; 602. cutting; 603. a support frame; 604. a diverter rod; 605. a tapered block; 7. and a nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: with reference to fig. 1-4, a cold hydrogen pipe for petrochemical reactors is characterized in that: comprises a reactor 1, an air inlet pipe 2, a hydrogen cooling ring pipe 3 and a bolt 4; a connecting pipe 101 is arranged at one side of the reactor 1; the air inlet pipe 2 is arranged in the middle of the connecting pipe 101 in a penetrating mode; the air inlet pipe 2 is connected with the connecting pipe 101 through a flange 5; the cold hydrogen loop 3 is arranged inside the reactor 1; the left side of the cold hydrogen ring pipe 3 is provided with a joint 301; the left end of the joint 301 and the right end of the air inlet pipe 2 are fixedly locked through a bolt 4; a plurality of exhaust holes 302 are arranged below the cold hydrogen ring pipe 3; the exhaust hole 302 is provided with an air distribution pipe 6.

Preferably, a sealing pipe 201 is arranged at the right end of the air inlet pipe 2; a sealing groove 303 is formed in the left side of the joint 301; the outer diameter of the sealing tube 201 is equal to the inner diameter of the sealing groove 303; the sealing pipe 201 is arranged in the sealing groove 303 and is in contact sealing with the inner wall of the sealing groove 303 through the outer wall of the sealing pipe 201; the outer diameter of the sealing tube 201 is smaller than that of the connecting tube 101.

Preferably, a nut 7 is welded above the joint 301; the bolt 4 is arranged on the nut 7 and used for fixing and locking the sealing pipe 201 left and right.

Preferably, the bottom of the gas distribution pipe 6 is provided with a conical cover 601; four groups of notches 602 are distributed on the periphery of the conical cover 601.

Preferably, a support frame 603 is arranged inside the gas distribution pipe 6; a shunt rod 604 is fixedly arranged in the middle of the support frame 603; the top of the shunt rod 604 is provided with a conical block 605; the small end of the conical block 605 faces the exhaust hole 302.

The working principle is that as shown in fig. 1-4, when cold hydrogen is introduced into an air inlet pipe 2, the cold hydrogen enters a cold hydrogen ring pipe 3 through the air inlet pipe 2 and a joint 301, and then is discharged from an air outlet on the cold hydrogen ring pipe 3, a conical cover 601 is arranged at the bottom of an air distribution pipe 6, four groups of notches 602 are distributed on the periphery of the conical cover 601, a support frame 603 is arranged inside the air distribution pipe 6, a shunt rod 604 is fixedly arranged in the middle of the support frame 603, a conical block 605 is arranged at the top of the shunt rod 604, the small end face of the conical block 605 faces an air outlet 302, the cold hydrogen discharged from the air outlet 302 reaches the position of the conical block 605 inside the air distribution pipe 6, the cold hydrogen can be primarily scattered under the action of the conical block 605, and then is discharged through the notches 602 on the conical cover 601, and the cold hydrogen is sprayed out under the action of the notches 602; the discharged cold hydrogen has larger laying area and is more uniform, and the catalyst bed can be ensured to carry out catalytic work in a high-activity state.

When the cold hydrogen distribution system is overhauled, the nut 7 is welded above the joint 301, the bolt 4 is arranged on the nut 7 and used for fixing and locking the sealing pipe 201 left and right, the bolt 4 on the joint 301 is loosened, and at the moment, the locking states of the sealing pipe 201 and the joint 301 are released.

The outer diameter of the sealing pipe 201 is equal to the inner diameter of the sealing groove 303, the sealing pipe 201 is arranged in the sealing groove 303, the outer wall of the sealing pipe 201 is in contact with the inner wall of the sealing groove 303 for sealing, when the sealing pipe 201 is loosened, the air inlet pipe 2 is pulled outwards, and the sealing pipe 201 can be easily pulled out of the sealing groove 303 on the joint 301; the outer diameter of the sealing pipe 201 is smaller than that of the connecting pipe 101, so that the whole air inlet pipe 2 can be pulled out of the reactor 1.

After the overhaul, the air inlet pipe 2 is inserted into the reactor 1, the sealing pipe 201 at the right end is inserted into the sealing groove 303 on the joint 301, and the bolt 4 is used for fixing and locking.

When the existing equipment is modified, the flange 5 at the right end of the air inlet pipe 2 is cut off, the sealing pipe 201 is processed at the right end, the flange 5 at the inlet of the cold hydrogen ring pipe 3 is cut off and the joint 301 is welded, and the original equipment is relatively simple to modify.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A petrochemical industry is cold hydrogen pipe for reactor which characterized in that: comprises a reactor (1), an air inlet pipe (2), a cold hydrogen ring pipe (3) and a bolt (4); a connecting pipe (101) is arranged on one side of the reactor (1); the air inlet pipe (2) penetrates through the middle of the connecting pipe (101); the air inlet pipe (2) is connected with the connecting pipe (101) through a flange (5); the cold hydrogen loop (3) is arranged in the reactor (1); the left side of the cold hydrogen ring pipe (3) is provided with a joint (301); the left end of the joint (301) and the right end of the air inlet pipe (2) are fixedly locked through a bolt (4); a plurality of exhaust holes (302) are arranged below the cold hydrogen ring pipe (3); an air distribution pipe (6) is arranged on the exhaust hole (302).

2. The cold hydrogen pipe for petrochemical reactors according to claim 1, wherein: a sealing pipe (201) is arranged at the right end of the air inlet pipe (2); a sealing groove (303) is formed in the left side of the joint (301); the outer diameter of the sealing pipe (201) is equal to the inner diameter of the sealing groove (303); the sealing pipe (201) is arranged in the sealing groove (303) and is in contact sealing with the inner wall of the sealing groove (303) through the outer wall of the sealing pipe (201); the outer diameter of the sealing pipe (201) is smaller than that of the connecting pipe (101).

3. The cold hydrogen pipe for petrochemical reactors according to claim 2, wherein: a nut (7) is welded above the joint (301); the bolt (4) is arranged on the nut (7) and used for fixing and locking the sealing pipe (201) left and right.

4. The cold hydrogen pipe for petrochemical reactors according to claim 1, wherein: the bottom of the gas distribution pipe (6) is provided with a conical cover (601); four groups of notches (602) are distributed on the periphery of the conical cover (601).

5. The cold hydrogen pipe for petrochemical reactors according to claim 1, wherein: a support frame (603) is arranged in the gas distribution pipe (6); a shunt rod (604) is fixedly arranged in the middle of the support frame (603); the top of the shunt rod (604) is provided with a conical block (605); the small end face of the conical block (605) faces the exhaust hole (302).