CN217568652U

CN217568652U - Distributor

Info

Publication number: CN217568652U
Application number: CN202220643117.1U
Authority: CN
Inventors: 田永成; 张世成; 顾月章
Original assignee: China Petroleum and Chemical Corp; Sinopec Engineering Group Co Ltd; Sinopec Guangzhou Engineering Co Ltd
Current assignee: China Petroleum and Chemical Corp; Sinopec Engineering Group Co Ltd; Sinopec Guangzhou Engineering Co Ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-10-14
Anticipated expiration: 2032-03-23

Abstract

The utility model discloses a distributor. The distributor comprises branch pipes, nozzles, branch pipes, a tortoise shell net, a lining, a semicircular pipe and a vertical steel plate; the branched pipe is in an oblong shape, the oblong branched pipe is formed by welding a semi-circular pipe and a vertical steel plate, and the nozzles are welded in a staggered mode according to the required spacing of the nozzle arrangement below the lower semi-circular pipe; the branch pipe can be a round pipe, a rectangular pipe or an oblong pipe, and nozzles are arranged at the bottom of the branch pipe according to the required spacing of the nozzle arrangement for uniform medium distribution; the long circular branch pipes are welded to the branch pipes at required intervals, the outer surfaces of the branch pipes and the outer surfaces of the branch pipes are welded with a tortoise-shell net or anchoring nails, then high-abrasion-resistant linings are coated, the cross-sectional areas of the branch pipes can be adjusted by changing the height of the vertical plate by adopting the long circular branch pipes and the branch pipes, the flow areas in the branch pipes are adjusted, the medium flow rates of single nozzles of the long circular branch pipes are adjusted to be close to the same, and the medium distribution of a distributor is more uniform.

Description

Distributor

Technical Field

The utility model belongs to the petroleum processing field relates to a gas mixing distribution system for reactor, and specifically speaking relates to a distributor.

Background

At present, in a catalytic cracking device in petrochemical industry, media of a plurality of reactors, regenerators and containers need to be uniformly distributed, the media need to be distributed by a media distributor to be more uniform, and the branch-shaped distributor is a commonly used distributor type.

The existing branch distributor mainly comprises a circular branch pipe and a circular branch pipe.

The branch pipe applied to the petrochemical industry is formed by processing a circular seamless steel pipe, nozzles are welded on the branch pipe according to a certain distance, but the longitudinal cutting area and the transverse cutting area of the seamless steel pipe with a certain length are fixed, and the larger the flow area in the branch pipe is when the total amount of a medium is fixed, the more the nozzles can be arranged. If the diameter of the branched pipe seamless steel pipe is increased, the ratio of the whole distributor to the cross section area of the equipment is higher, the flow area in the pipe is increased, but the medium passing area outside the pipe is reduced, so that the medium pressure drop outside the distributor is large, the medium outside the distributor has high flow velocity through the distributor, the wear of the high-wear-resistant lining on the surface of the distributor is serious, the energy consumption and the normal operation of the device are directly influenced, and the production is stopped for repairing when the wear is serious.

Patent CN202023081011.7 provides a main air distributing pipe for catalytic cracking unit regenerator, is provided with the branch pipe on main tuber pipe, branch pipe, bleeder and the nozzle main tuber pipe, and four branch pipes evenly set up along the main tuber pipe, and the left and right sides symmetry of branch pipe is provided with the bleeder, and the left and right sides of bleeder evenly is provided with a plurality of nozzles. However, the scheme can only realize that the nozzles are uniformly distributed along the bed layer, and because the areas of the branch pipes and the branch pipes cannot be accurately adjusted, the flow through all the nozzles can not be basically kept the same, and the uniform distribution of media along the bed layer can not be realized actually, the medium throughput of some nozzles is large, the medium throughput of some nozzles is small, and even external media can return to the interior of the branch pipes through the nozzles to block the branch pipes; although the connecting plates are arranged between the branch pipes on each side of the branch pipe, the circular branch pipe and the branch pipe have limited vibration resistance in medium flow due to the bending resistance and rigidity limitation of the circular branch pipe and the branch pipe, and the steel distribution pipe can be quickly worn through by the catalyst after the surface lining is vibrated to break off. If the diameter of the dense phase of the distribution pipe is small, and the air flow is large, the distribution pipe occupies a large dense phase area, and the medium passes through the distribution pipe at a high speed, so that the pressure drop of a bed layer is large, the distribution pipe is seriously abraded, the distribution pipe is seriously vibrated, the long-period stable operation of the device is difficult to realize, and even the device cannot operate.

Disclosure of Invention

In order to solve the medium and pass through the distributor distribution medium inhomogeneous, the medium passes through the distributor pressure drop big, and the medium passes through the distributor velocity of flow height outside the distributor and causes the wear and tear of the high wear-resisting lining of distributor outward appearance serious, and lateral bending resistance and rigidity are not enough, easy vibration damage scheduling problem, the utility model provides a distributor.

The utility model provides a distributor, which comprises a branch pipe, a nozzle, a branch pipe, a tortoise shell net, a lining, a semicircular pipe and a vertical steel plate; the branch pipe is in an oblong shape and is formed by welding a semi-circular pipe and a vertical steel plate, and in order to increase the flow area in the branch pipe, holes are formed below the lower semi-circular pipe in a staggered mode according to the required spacing of nozzle arrangement and nozzles are welded; the branch pipe can be a round pipe, a rectangular pipe or an oblong pipe, and nozzles are arranged at the bottom of the branch pipe according to the required spacing of the nozzle arrangement for uniform medium distribution; and welding the long circular branch pipes to the branch pipes at required intervals, and coating a high-wear-resistant lining after welding a tortoise-shell net or an anchoring nail on the outer surfaces of the branch pipes and the branch pipes in order to increase the bending resistance and rigidity of the distributor, so as to prevent the distributor from being worn out quickly by a medium.

As a modified scheme, the long round branch pipe is formed by rolling a steel plate.

As a further improvement, the semicircular pipe is made by dividing a seamless steel pipe into two parts.

As a further improved scheme, the semicircular pipe is integrally formed by punching and molding a steel plate.

As a further improved scheme, the branch pipe is a round pipe formed by rolling a steel plate.

As a further improvement, the branch pipe is a rectangular pipe formed by welding steel plates, and the ratio of the length to the width is not more than 2.5.

As a further improvement, the ratio of the height of the vertical steel plates to the distance between the vertical steel plates is not more than 3.

As a further improvement, the branch pipe is an elongated circular pipe formed by rolling and welding steel plates.

As a further improved scheme, a connecting plate is arranged between the branch pipes, a supporting pipe is arranged below each branch pipe, the tail ends of the branch pipes are communicated with the main pipe, the branch pipes can be supported, more media can be conveyed to the tail ends of the branch pipes, and the branch pipes can better play a role in preventing the vibration of the distribution pipes after being reinforced by the supporting pipes.

The utility model discloses use in the process equipment including but not limited to multiple devices such as petrochemical catalytic cracking, coal industry methyl alcohol system alkene, carry out the medium distribution.

The utility model provides a pair of distributor's theory of operation does:

the medium is uniformly distributed through the main pipe, the branch pipe and the nozzle and then uniformly contacts with the catalyst in the bed layer, so that the requirements of medium reaction or catalyst regeneration and the like are met. The distribution pipe branch pipe, the branch pipe are all arranged in the shape and size of the nozzle to realize the uniform distribution of the medium in the distributor, so that the process production requirement is better realized.

The utility model discloses following beneficial effect has:

1) By adopting the long circular branch pipe and the branch pipe, the cross section area of the branch pipe can be adjusted by changing the height of the vertical plate, so that the flow area in the branch pipe can be adjusted, the medium flow of a single nozzle of the long circular branch pipe can be adjusted to be close to uniform, and the medium of the distributor can be distributed more uniformly;

2) By adopting the long circular branch pipes and the branch pipes, the flow area of the medium outside the distributor through the distributor can be increased, the pressure drop of the medium through the distributor is reduced, and the abrasion of the high-wear-resistant lining on the surface of the distributor is reduced;

3) The branch pipes are changed into square and the branch pipes are changed into long round shapes, so that the bending resistance and rigidity of the branch pipes and the branch pipes can be improved, the vibration amplitude of the branch pipes is reduced, the lining is prevented from cracking and falling off, the service life of the distributor is prolonged, and the effect is better by matching with the connecting plates arranged between the branch pipes.

4) The supporting pipe is arranged below each branch pipe, so that the main pipe is communicated with the tail end of each branch pipe, the branch pipes can be supported, more media can be conveyed to the tail ends of the branch pipes, the vibration of the distribution pipes can be better prevented by the branch pipes after the supporting pipes are reinforced, and the service life of the distributor is further prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a distributor according to the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2;

fig. 4 is a schematic view of the long circular tube structure in fig. 3.

In the figure: 1-branch pipe, 2-nozzle, 3-branch pipe, 4-tortoise shell net, 5-lining, 6-semicircular pipe, 7-vertical steel plate, 8-supporting pipe, 9-connecting plate and 10-main pipe.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 4, the distributor comprises a branch pipe 1, a nozzle 2, a branch pipe 3, a tortoise-shell net 4, a lining 5, a semi-circular pipe 6 and a vertical steel plate 7; the branched pipe 1 is in an oblong shape, the oblong branched pipe is formed by welding a semi-circular pipe 6 and a vertical steel plate 7, the ratio of the height of the vertical steel plate to the distance between the vertical steel plates is not more than 3, and in order to increase the flow area in the branched pipe, the lower semi-circular pipe is provided with staggered hole-opening welding nozzles according to the distance required by nozzle arrangement; the branch pipe 3 can be a round pipe, a rectangular pipe or an oblong pipe, and nozzles are arranged at the bottom of the branch pipe according to the distance required by the arrangement of the nozzles for uniform medium distribution; and welding the long circular branch pipes to the branch pipes at required intervals, and coating a high-wear-resistant lining after welding a tortoise-shell net or an anchoring nail on the outer surfaces of the branch pipes and the branch pipes in order to increase the bending resistance and rigidity of the distributor, so as to prevent the distributor from being worn out quickly by a medium.

The long circular branch pipe can be formed by rolling a steel plate, or can be formed by welding a seamless steel pipe and the steel plate after being divided into two parts; the branch pipe can be a round pipe formed by rolling a steel plate or a rectangular pipe or an oblong pipe welded by the steel plate, and the ratio of the length to the width is not more than 2.5; set up connecting plate 9 between the bleeder, set up stay tube 8 under every branch pipe, make and be responsible for 10 and the terminal UNICOM of branch pipe 3, can play the support branch pipe and carry more media to the branch pipe end, the branch pipe can be better after the stay tube reinforcement prevent the vibrating action of distribution pipe.

The flow area inside the long circular branch pipe is increased, so that the number of arranged nozzles is increased; under the condition of guaranteeing that flow area is the same with seamless steel pipe in the lateral conduit, multiplicable outer medium of distributor passes through distributor flow area, the medium passes through the reduction of distributor pressure drop and the high wear-resisting lining wearing and tearing of distributor outward appearance reduce, increase the bending resistance performance and the rigidity of lateral conduit, it can make the effect better to set up the connecting plate between the cooperation lateral conduit, reduce lateral conduit vibration amplitude, it bursts and drops to reduce the lining, set up stay tube 8 under every branch pipe, make and be responsible for 10 and 3 terminal UNICOMs of branch pipe, can play support branch pipe 3 and to 3 terminal more mediums of branch pipe, branch pipe 3 can be better prevent the vibration of distribution pipe after the stay tube reinforcement, thereby make distributor life increase, reduce the number of times of parking overhauls, make the long period steady operation of device.

The foregoing is illustrative of the present invention and is not to be construed as limiting thereof in any way. Any person skilled in the art should recognize that changes and modifications made to the above description are equivalent examples of equivalent variations without departing from the scope of the invention. The technical solution of the present invention is not to be departed from, and any equivalent changes made by the technical substance of the present invention to the above embodiments all belong to the scope of the technical solution of the present invention.

Claims

1. A distributor, characterized by: the distributor comprises branch pipes, nozzles, branch pipes, a tortoise shell net, a lining, a semicircular pipe and a vertical steel plate; the branched pipe is in an oblong shape, the oblong branched pipe is formed by welding a semi-circular pipe and a vertical steel plate, and the nozzles are drilled and welded in a staggered mode at intervals required by nozzle arrangement below the semi-circular pipe; the branch pipe is a round pipe, a rectangular pipe or an oblong pipe, and nozzles are arranged at the bottom of the branch pipe according to the required spacing of the nozzle arrangement; welding the long circular branch pipes to the branch pipes at required intervals, welding a tortoise-shell net or anchoring nails on the outer surfaces of the branch pipes and the outer surfaces of the branch pipes, and then coating a high-wear-resistant lining.

2. The distributor of claim 1, wherein: the long round branch pipe is formed by rolling a steel plate.

3. The distributor of claim 1, wherein: the semicircular pipe is made by dividing a seamless steel pipe into two parts.

4. The distributor according to claim 1, wherein: the semicircular pipe is integrally formed by punching a steel plate.

5. The distributor of claim 1, wherein: the branch pipe is a round pipe formed by rolling a steel plate.

6. The distributor of claim 1, wherein: the branch pipe is a rectangular pipe formed by welding steel plates, and the ratio of the length to the width of the branch pipe is not more than 2.5.

7. The distributor of claim 1, wherein: the ratio of the height of the vertical steel plates to the distance between the vertical steel plates is not more than 3.

8. The distributor according to claim 1, wherein: the distributor is characterized in that the distributor further comprises a main pipe, a connecting plate is arranged between the branch pipes, a supporting pipe is arranged under each branch pipe, the main pipe is communicated with the tail ends of the branch pipes, the branch pipes can be supported and more media can be conveyed to the tail ends of the branch pipes, and the branch pipes can better prevent the vibration of the distribution pipes after being reinforced by the supporting pipes.