CN215232458U - V-shaped Johnson net type collecting pipe filter structure for reactor - Google Patents

Abstract

A V-shaped Johnson net type collecting pipe filter structure for a reactor relates to the technical field of reactor internals, wherein a catalyst bed layer is arranged in the reactor along the height direction, the filter structure is horizontally arranged at the bottom of the reactor and comprises a collecting header pipe and filter components, and the filter components are symmetrically distributed on two sides of the collecting header pipe; the filter assembly includes porous branch pipe and filter screen panel, and porous branch pipe is equipped with a plurality ofly, and a plurality of porous branch pipes set up in proper order the interval and with collect house steward intercommunication, and a plurality of porous branch pipes are kept away from the line of collecting between the house steward's the other end and are circular-arcly, and every porous branch is managed and all is overlapped and is equipped with filter screen panel, and filter screen panel is last evenly to be formed with a plurality of V type filter-tank, and the size outside-in of V type filter-tank is crescent gradually, the utility model discloses in, fluid is at the in-process of catalyst bed of flowing through, and fluid energy equilibrium distributes in whole catalyst bed for the catalyst can fully effective use.

Description

V-shaped Johnson net type collecting pipe filter structure for reactor

Technical Field

The utility model relates to a reactor internals technical field, concretely relates to V type Johnson net type collecting pipe filter structure for reactor.

Background

The hydrogenation reactor has wide application in the aspect of chemical pharmacy, can be used as basic equipment for product development, organic chemicals and pharmaceutical research, and can also be used for quantitatively analyzing the activity of a catalyst in an industrial process. In the petroleum refining industry, hydrogenation reactors are widely used for hydrogenation cracking and hydrofining to remove impurities such as oxygen, sulfur, nitrogen and the like in oil products, and to fully saturate olefins and partially saturate aromatics so as to improve the quality of the oil products.

The existing reactor has the following defects in the aspect of catalyst use efficiency: liquid flows into the outlet collector after entering the reactor and contacting with the catalyst bed, because the collection mouth that the outlet collector set up is less, the fluid distributes when arriving the reactor bottom gradually and draws in, lead to partial catalyst to fail to cause for the catalyst can not fully effective use with fluid contact, cause the waste and the consumption of catalyst, in addition, the outlet collector adopts the dish formula filter screen, anomalous granule causes the jam after getting into the filter screen easily, block after getting into, cause the pressure drop to rise, thereby lead to the filter screen to lose efficacy, must stop the processing, therefore, there is the place of treating the improvement.

SUMMERY OF THE UTILITY MODEL

To the not enough that prior art exists, the utility model aims to provide a V type johnson net type collecting pipe filter structure for reactor for the fluid is at the in-process of flowing through the catalyst bed, and fluid ability equilibrium distributes in whole catalyst bed for the catalyst can fully effectively use, and concrete scheme is as follows:

a V-shaped Johnson net type collecting pipe filter structure for a reactor is characterized in that a catalyst bed layer is arranged in the reactor along the height direction, the filter structure is horizontally arranged at the bottom of the reactor and comprises a collecting header pipe and filter components, and the filter components are symmetrically distributed on two sides of the collecting header pipe;

the filter assembly comprises a plurality of porous branch pipes and filter screen covers, the porous branch pipes are provided with a plurality of holes and a plurality of the porous branch pipes are sequentially arranged at intervals and communicated with the collecting header pipe and are a plurality of the porous branch pipes are far away from a connecting line between the other ends of the collecting header pipe is arc-shaped and each porous branch pipe is provided with the filter screen cover in a sleeved mode, a plurality of V-shaped filter tanks are uniformly formed in the filter screen cover, and the sizes of the V-shaped filter tanks are gradually increased from outside to inside.

Further, the filter screen panel includes brace rod and V type ring, the brace rod evenly is provided with many around same axis, follow on the surface of brace rod evenly the interval is provided with a plurality of V type rings in the length direction of brace rod.

Furthermore, a fit clearance is arranged between the porous branch pipe and the filter screen cover.

Furthermore, the flow area of the filter screen cover is 4-8 times of the total aperture area of the porous branch pipe.

Furthermore, a liquid outlet is formed in the bottom of the collecting header pipe.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) after fluid enters the reactor, the fluid flows through the catalyst bed layer, the filter structure is horizontally arranged, the whole shape of the filter structure is similar to that of a round shape, the bottom of the reactor can be almost covered, each filter component can filter the fluid by arranging the filter components, the fluid enters the collecting main pipe by the filter components, and catalyst particles are blocked outside.

(2) The V-shaped filter groove on the surface of the filter screen cover can be determined according to different sizes of catalysts and particle sizes of the cracked catalysts, so that the combined structure of the filter assembly ensures that the fixed catalysts can be blocked by the filter screen cover on one hand, the flow area of the filter screen cover is 4-8 times of the total aperture area of the porous branch pipe, the filter screen cover cannot form pressure difference, the service life of the filter screen cover is prolonged, and the service life of the whole filter structure is prolonged under the condition of larger pressure difference.

(3) A fit clearance is arranged between the porous branch pipe and the filter screen cover to ensure that the filter screen cover is not clamped or loosened too much under the condition of thermal expansion, so that the fracture of the filter screen cover after excessive shaking friction or extrusion deformation caused under the condition of unstable flow is avoided, and faults such as filter failure are formed.

Drawings

FIG. 1 is a schematic diagram of a background art structure;

FIG. 2 is a schematic diagram showing the relationship between a disk filter and a catalyst in the background art;

FIG. 3 is a schematic overall view of a reactor according to the present invention;

FIG. 4 is a general schematic view of a filter arrangement according to the present invention;

FIG. 5 is a general schematic view of a filter assembly according to the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 5;

fig. 7 is a schematic diagram showing the relationship between the V-shaped filter tank and the catalyst according to the present invention.

Reference numerals: 1. a reactor; 2. a catalyst bed layer; 3. a disc type filter screen; 4. a fluid; 5. a filter arrangement; 6. a collecting header pipe; 7. a filter assembly; 8. dividing the pipe into multiple holes; 9. a filtering net cover; 91. supporting ribs; 92. a V-shaped ring; 10. a V-shaped filter tank; 11. fitting the clearance.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 3, a V-type johnson mesh type manifold filter structure for a reactor 1 of the type commonly used in hydrogenation reactors without limitation, a catalyst bed 2 is disposed in the reactor 1 in a height direction, a catalyst disposed in the catalyst bed 2 is adapted to be brought into contact with a fluid 4, and then the fluid 4 flows out of the catalyst bed 2 by gravity. Catalyst particles may be entrained in the fluid 4 and to improve the purity of the fluid 4, the present invention provides a filter structure 5 at the bottom of the reactor 1.

Because the reactor 1 is generally cylindrical, and the cross section of the bottom of the reactor is circular, the existing reactor 1 is generally provided with an outlet collector at the bottom, the outlet collector adopts a disc-type filter screen 3, and with reference to fig. 1 and 2, the fluid 4 in the reactor 1 is gradually gathered when reaching the bottom of the reactor 1, so that part of the catalyst is not contacted with the fluid 4, and the catalyst cannot be fully and effectively used. And irregular particles are easy to block after entering the filter screen, and are blocked after entering the filter screen, so that the pressure drop is increased, the filter screen is invalid, and the filter screen must be stopped for treatment.

With reference to fig. 3 and 4, different from the foregoing prior art, the filter structure 5 of the present invention is horizontally disposed at the bottom of the reactor 1, and the whole filter structure 5 is also in a circular shape and coaxially disposed with the reactor 1, and after the fluid 4 flows out from the catalyst bed 2, the whole filter structure 5 can filter the fluid 4 on the horizontal plane. Specifically, filter structure 5 is including collecting house steward 6, filter assembly 7, and the both sides that collect house steward 6 all are equipped with filter assembly 7 that are the symmetric distribution, and through setting up filter assembly 7, every filter assembly 7 homoenergetic plays the filtering action to fluid 4, and during fluid 4 entered into collecting house steward 6 through filter assembly 7, the liquid outlet had been seted up to collecting house steward 6's bottom, and the liquid outlet is in the back, and not in the figure meaning is convenient for fluid 4 to pass through the liquid outlet and get into in the follow-up flow.

The filter assembly 7 comprises a plurality of porous branched pipes 8 and a filter screen cover 9, the porous branched pipes 8 are provided with a plurality of holes, the holes are arranged in parallel, the porous branched pipes 8 are sequentially arranged at intervals and communicated with the collecting main pipe 6, the porous branched pipes 8 are far away from a connecting line between the other ends of the collecting main pipe 6 and are arc-shaped, and the length of the porous branched pipes 8 in the middle is longest in the same filter assembly 7, the lengths of the porous branched pipes 8 on the two sides are gradually shortened, so that the whole shape of the whole filter structure 5 is similar to a circle, and the shape matching with the reactor 1 is facilitated. Each porous branch pipe 8 is sleeved with a filter screen 9, a plurality of V-shaped filter tanks 10 are uniformly formed on the filter screen 9, and the sizes of the V-shaped filter tanks 10 are gradually increased from outside to inside (as shown in fig. 7).

The size, number and position of the apertures on the multi-hole branched pipe 8 are designed and selected according to the requirements of process calculation, flow rate of the fluid 4 and pressure drop. The V-shaped filter groove 10 on the surface of the filter screen 9 can be determined according to different sizes of catalysts and sizes and particle diameters of the cracked catalysts, the flow area of the filter screen 9 is 4-8 times of the total aperture area of the porous branch pipe 8, the filter screen 9 cannot form pressure difference, the service life of the filter screen 9 is prolonged, and therefore the service life of the whole filter structure 5 is prolonged under the condition of larger pressure difference.

Referring to fig. 5 and 6, in the present embodiment, the filter mesh enclosure 9 includes a plurality of support ribs 91 and V-shaped rings 92, the plurality of support ribs 91 are uniformly disposed around the same axis, the plurality of V-shaped rings 92 are uniformly disposed on the outer surface of the support ribs 91 along the length direction of the support ribs 91 at intervals, and in essence, the two adjacent V-shaped rings 92 cooperate with each other to form the V-shaped filter tank 10. Use the automatic coiling welding of V-type silk to form during the preparation of V type ring 92, there is welding stress, if adopt the filter screen panel 9 as filter media simply, filter screen panel 9 receives the effect of pressure differential and appears the fracture of welding seam department easily down, causes the inefficacy of filter, therefore, the utility model discloses in, filter assembly 7's main points are for adopting inside porous minute pipe 8 restriction velocity of flow to bear pressure differential, ensure that fluid 4 carries out evenly distributed according to the design requirement, filter screen panel 9 only plays to keep the catalyst granule can not block up the pore on the porous minute pipe 8 and prevent that great impurity from not entering into next flow, causes the filter inefficacy. Therefore, the fluid 4 can be evenly distributed in the whole catalyst bed layer 2 in the process that the fluid 4 flows through the catalyst bed layer 2, so that the catalyst can be fully and effectively used.

Optimally, a fit clearance 11 is arranged between the porous branch pipe 8 and the filter screen 9 to ensure that the filter screen 9 is not clamped or loosened too much under the condition of thermal expansion, so that the fracture of the filter screen 9 after excessive shaking friction or extrusion deformation caused under the condition of unstable flow is avoided, and faults such as filtering failure are formed.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. A V-shaped Johnson net type collecting pipe filter structure for a reactor, wherein a catalyst bed layer (2) is arranged in the reactor (1) along the height direction, the V-shaped Johnson net type collecting pipe filter structure is characterized in that the filter structure (5) is horizontally arranged at the bottom of the reactor (1), the filter structure (5) comprises a collecting header pipe (6) and filter assemblies (7), and the filter assemblies (7) are symmetrically distributed on two sides of the collecting header pipe (6);

filter component (7) are including porous minute pipe (8) and filter screen panel (9), porous minute pipe (8) are equipped with a plurality ofly, and are a plurality of porous minute pipe (8) interval in proper order set up and with collect house steward (6) intercommunication, and are a plurality of porous minute pipe (8) are kept away from line between the other end of collecting house steward (6) is circular-arc, every porous minute pipe (8) are gone up all to be overlapped and are equipped with filter screen panel (9), filter screen panel (9) are gone up evenly to be formed with a plurality of V type filter tank (10), the size outside-in of V type filter tank (10) increases gradually.

2. The V-type johnson mesh type collector pipe filter structure for a reactor according to claim 1, wherein the filter mesh cover (9) comprises a plurality of support ribs (91) and V-shaped rings (92), the plurality of support ribs (91) are uniformly arranged around the same axis, and the plurality of V-shaped rings (92) are uniformly arranged on the outer surface of the support ribs (91) at intervals along the length direction of the support ribs (91).

3. A V-type johnson mesh manifold filter structure for a reactor according to claim 1, wherein a fitting gap (11) is provided between said perforated manifold (8) and said filter screen (9).

4. A V-type johnson mesh manifold filter structure for a reactor according to claim 3, wherein said filter mesh enclosure (9) has a flow area 4-8 times the total pore size area of said perforated veins (8).

5. A V-type johnson mesh manifold filter structure for a reactor as claimed in claim 1 wherein said collection manifold (6) is provided with a liquid outlet at the bottom.

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