CN218422633U

CN218422633U - Pore plate of strip extruding machine

Info

Publication number: CN218422633U
Application number: CN202222587876.3U
Authority: CN
Inventors: 傅饶; 王丽华; 张会成; 张雁玲
Original assignee: Sinopec Dalian Petrochemical Research Institute Co ltd; China Petroleum and Chemical Corp
Current assignee: Sinopec Dalian Petrochemical Research Institute Co ltd; China Petroleum and Chemical Corp
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-02-03
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses a crowded strip machine orifice plate, crowded strip machine orifice plate be circular, set up a plurality of extrusion holes on the orifice plate, extrude the hole along the planar outside edge evenly distributed of orifice plate, extrude hole one end and be the feed end, the other end is the discharge end, extrude the cylindrical pore inner wall in hole and set up the spiral arch, the spiral arch extends to the discharge end along the feed end, preferably extends to apart from the discharge end certain distance. The pore plate of the extruder is used for catalyst molding, can prepare cylindrical carrier particles with spiral grooves on the surface, and is beneficial to improving the properties of pressure drop, mass transfer, fluid distribution and the like of reaction materials in a catalyst bed layer.

Description

Pore plate of strip extruding machine

Technical Field

The utility model belongs to the technical field of the catalyst preparation, concretely relates to can extrude crowded strip pore plate of cylindrical carrier that has surface groove structure.

Background

The catalyst carrier is mainly used for carrying and dispersing active components, is an important component of the catalyst, and the shape, the size and the mechanical strength of the carrier can have important influence on the service performance of the catalyst. The carrier particles are usually obtained by extrusion molding using a molding machine, and the orifice structure of the extruder is decisive for the shape of the carrier particles.

The cylindrical carrier is a commonly used carrier shape in the fields of petroleum, chemical industry and environmental protection. However, since the surface grooves of the cylindrical particles are few, after the cylindrical particles are prepared into the catalyst and stacked into a catalyst bed layer, the cylindrical particles may not have obvious advantages in terms of pressure drop, mass transfer, fluid distribution and the like of reaction materials compared with catalysts in the shape of clover, clover and the like, so that the cylindrical particles have certain limitations in certain industrial applications.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a hole plate of a strip extruding machine, which is used for catalyst forming, can prepare cylindrical carrier particles with spiral grooves on the surface, and is favorable for improving the properties of reaction materials such as pressure drop, mass transfer, fluid distribution and the like on a catalyst bed layer.

The utility model discloses an extruding machine orifice plate is circular, sets up a plurality of extrusion holes on the orifice plate, and extrusion hole is along the planar outside edge evenly distributed of orifice plate, and extrusion hole one end is the feed end, and the other end is the discharge end, and the cylindrical pore inner wall in extrusion hole sets up spiral protrusion, and spiral protrusion extends to the discharge end along the feed end, preferably extends to apart from the discharge end certain distance, the preferred 1/4 of extruding the hole height (orifice plate thickness) of distance go 1/2.

The utility model discloses in, spiral protrusion be the arc surface along extruding the radial cross section of hole, the diameter of the circle that the arc surface is located is 1/32 ~1/2 of extruding the hole diameter, preferably 1/16 ~ 1/8, the central angle of circular arc is 60 to 180, preferably 90 ~ 160.

The utility model discloses in, extrude the distance between the two adjacent circles spiral protrusion on the hole axial direction and be 1/5 of the hole height (orifice plate thickness) of extruding to 1/2.

In the utility model, the diameter of the pore plate is 15-200 mm, preferably 25-100 mm;

the utility model discloses in, the diameter of extruding the hole be 1 ~ 6mm, preferably 2 ~ 5mm.

The utility model discloses in, the thickness of orifice plate is 1 ~ 7mm, preferably 2 ~ 6mm.

The material of orifice plate is metal material, metal alloy material, pottery, plastics.

Adopt the utility model discloses the catalyst of the catalyst carrier granule preparation that the orifice plate obtained has that external contact area is big, the void fraction is high, the diffusion is long-range short, advantage that intensity is good, is favorable to improving mass transfer performance, reduces catalyst bed pressure drop.

Drawings

Fig. 1 is a top view of the orifice plate of the present invention.

Fig. 2 is a plan view of the orifice plate extrusion orifice of the present invention.

Fig. 3 is a side view of an orifice plate extrusion orifice of the present invention.

Detailed Description

Example 1

Adopt the stainless steel to be the material, the orifice plate is circular, and the diameter is 30mm, and thickness is 4mm, extrudes the orifice diameter and is 2mm, presses close to the orifice plate on the orifice plate and foreign-object evenly distributed 6, and extrudes the orifice center and be 1.5mm apart from the orifice plate outermost edge distance. The diameter of the sphere where the arc surface protrusion of the extrusion hole is located is 0.25mm, and the arc angle is 120 degrees. The distance between two adjacent circles of spiral protrusions in the axial direction of the extrusion hole is 2mm. The spiral protrusion extends to the discharge end along the feed end, and the distance from the spiral protrusion to the discharge end is 2mm.

Example 2

Adopt pottery for the material, the orifice plate be circular, the diameter is 50mm, thickness is 5mm, extrudes the orifice diameter and is 3mm, presses close to the orifice plate on the orifice plate and foreign-object evenly distributed 9, and extrudes the orifice center and be 2mm apart from the orifice plate outermost edge distance. The diameter of the sphere where the arc surface protrusion of the extrusion hole is located is 0.25mm, and the arc angle is 90 degrees. The distance between two adjacent circles of spiral protrusions in the axial direction of the extrusion hole is 2mm. The spiral protrusion extends to the discharge end along the feed end, and the distance from the spiral protrusion to the discharge end is 1mm.

Example 3

Adopt and gather tetrafluoro as the material, the orifice plate be circular, the diameter is 50mm, thickness is 5mm, extrudes the orifice diameter and is 4mm, presses close to the orifice plate on the orifice plate and foreign aid evenly distributed 9, and extrudes the orifice center and be 1.5mm apart from the orifice plate outermost edge distance. The diameter of a sphere where the arc surface protrusion of the extrusion hole is located is 0.35mm, and the arc angle is 160 degrees. The distance between two adjacent circles of spiral protrusions in the axial direction of the extrusion hole is 2mm. The spiral protrusion extends to the discharge end along the feed end, and the distance from the spiral protrusion to the discharge end is 2mm.

Claims

1. The utility model provides a crowded strip machine orifice plate which characterized in that: the pore plate is circular, a plurality of extrusion holes are formed in the pore plate and are uniformly distributed along the outer edge of the plane of the pore plate, one end of each extrusion hole is a feeding end, the other end of each extrusion hole is a discharging end, a spiral bulge is arranged on the inner wall of a cylindrical pore passage of each extrusion hole, and the spiral bulge extends to the discharging end along the feeding end.

2. A plodder orifice plate as claimed in claim 1, characterized in that: the spiral protrusion extends to a certain distance away from the discharge end, and the distance is 1/4 to 1/2 of the thickness of the pore plate.

3. A plodder orifice plate as claimed in claim 1, characterized in that: the cross section of the spiral bulge along the radial direction of the extrusion hole is an arc surface.

4. A plodder orifice plate according to claim 3, characterized in that: the diameter of the circle where the arc surface is located is 1/32-1/2 of the diameter of the extrusion hole.

5. A hole plate of a plodder according to claim 3 or 4, characterized in that: the central angle of the arc ranges from 60 to 180 degrees.

6. The hole plate of the plodder according to claim 1, characterized in that: the distance between two adjacent circles of spiral protrusions in the axial direction of the extrusion hole is 1/5 to 1/2 of the thickness of the hole plate.

7. The hole plate of the plodder according to claim 1, characterized in that: the diameter of the pore plate is 15-200 mm.

8. The hole plate of the plodder according to claim 1, characterized in that: the diameter of the extrusion hole is 1-6 mm.

9. The hole plate of the plodder according to claim 1, characterized in that: the thickness of the pore plate is 1-7 mm.

10. The hole plate of the plodder according to claim 1, characterized in that: the orifice plate is made of metal materials, metal alloy materials, ceramics or plastics.