Waveform ring catalyst support

Abstract

The utility model discloses a wave ring catalyst carrier, including annular body, the outer convex body is arranged on the outer circular surface of annular body along the axial interval, the outer convex body is connected with the outer groove round and smooth between, the inner convex body is arranged on the inner hole surface of annular body along the axial interval, the inner convex body is connected with the inner groove round and smooth between, the outer convex body and the inner convex body are set up mutually staggered, the shaft flow hole is arranged on the outer convex body along the axial, and the shaft flow hole both ends are shaft flow taper hole, and the shaft flow straight hole is connected between two shaft flow taper holes, the arc slot is set up on the annular body end face between the outer convex body, the utility model not only can alleviate the accumulation weight, and can increase liquid dispersion flow space, makes cross section pore distribution dispersion even, thereby has increased the dispersivity and the flux of oil material, has reduced the resistance of system, and the support is covered on the catalyst, can better adsorb and separate the harmful impurity in oil, prevents catalyst blockage and carbon deposition and coking, improves catalytic effect.

Description

Technical Field

[0001] This utility model relates to a catalyst support, and more particularly to a catalyst support with wavy rings on both the inner and outer surfaces. Background Technology

[0002] Ceramic carriers, used as catalyst supports in the petrochemical industry, primarily utilize their large specific surface area, low gas flow resistance, and high regularity. Through a refined manufacturing process, prepared ceramic raw materials are placed in a specific extrusion molding machine and extruded through a die under pressure to form a carrier. Activators are then impregnated or coated onto the inner and outer surfaces of the carrier, followed by reduction calcination to achieve various practical properties. They are widely used in the petroleum and chemical industries for eliminating harmful gases during production processes and filtering liquid residues. Currently, the main problems with catalyst carriers on the market are: when the grade of the feedstock oil decreases and the impurities increase, the carrier, due to its insufficient specific surface area, poor permeability, and low porosity, has a limited ability to adsorb and separate harmful impurities such as sulfides from the oil. This easily leads to catalyst blockage and carbon deposition / coking, resulting in excessive pressure drop and high temperature in fixed-bed reactors. This increases the flow resistance of reactants, reduces the frequency of effective contact between reactants, not only increases the reactor bed load and affects the working efficiency of the fixed-bed reactor, but also shortens the catalyst lifespan, reduces production efficiency, and increases production costs. Utility Model Content

[0003] To address the problems existing in the catalyst supports of the prior art, this invention provides a wave-shaped ring catalyst support with high compressive strength, fast flow rate, large specific surface area, and less clogging of the catalyst on the support surface.

[0004] The technical solution adopted by this utility model to solve the technical problem is: a wave-shaped ring catalyst carrier, including a ring body, wherein the ring body is made of alumina as the main raw material and auxiliary material through ball milling, aging and mud refining, molding and drying and high temperature firing. The ring body is cylindrical, and external protrusions are arranged axially at intervals on the outer circular surface of the ring body. The external protrusions are smoothly connected by external grooves. Inner protrusions are arranged axially at intervals on the inner surface of the ring body. The inner protrusions are smoothly connected by inner grooves. The external and inner protrusions are staggered. An axial flow hole is arranged on the external protrusion along the axial direction. The two ends of the axial flow hole are axial flow conical holes. The two axial flow conical holes are connected by an axial flow straight hole. A circular arc groove is arranged on the end face of the ring body between the external protrusions. An external through groove and an inner through groove are arranged radially on the end face of the ring body between the inner concave bodies. The two ends of the external through groove are respectively connected to the external groove and the circular arc groove.

[0005] The inner diameter of the annular body is 0.6-0.7 times the outer diameter of the annular body, the length of the annular body is 1.2-1.5 times the outer diameter of the annular body, and the bulk density is 1.4-2.0 g / cm³. 3 Specific surface area 50-70m² 2 / g.

[0006] This invention, by providing protrusions, grooves, and axial flow holes on the outer and inner surfaces of the original cylindrical (tubular) body, and by providing arc grooves, external through grooves, and internal through grooves at both ends of the annular body, increases the specific surface area by more than 50% compared to an annular body of the same size, while ensuring that the compressive strength is not lower than that of the annular body. It features high strength, low bulk density, good acid and alkali resistance, large specific surface area (more than 50% higher than similar cylindrical bodies), and high porosity. Therefore, it has the following technical effects in practical use: 1. It can reduce the pressure drop in fixed-bed reactors by more than 40%, reduce the flow resistance of reactants, increase the effective contact of reactants, thereby improving the working efficiency of fixed-bed reactors and reducing refining costs. 2. Due to the increased specific surface area and the staggered flow effect in the axial and through-flow holes, not only can the accumulated weight be reduced, but the liquid dispersion flow space can also be increased, making the cross-sectional pore distribution more uniform. This increases the dispersibility and throughput of oil materials, reduces the system resistance, and supports the catalyst, which can better adsorb and separate harmful impurities in the oil, prevent catalyst blockage and carbon deposition, and improve the catalytic effect. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the main structure of this utility model. Figure 2 yes Figure 1 A schematic diagram of the AA half-section structure.

[0008] Figure 3 yes Figure 1 A schematic diagram of a partial cross-sectional view of BB.

[0009] In the figure, 1. outer groove, 2. outer protrusion, 3. axial flow cone hole, 4. axial flow straight hole, 5. circular arc groove, 6. outer through groove, 7. inner through groove, 8. inner groove, 9. inner protrusion, 10. through hole, 11. annular body. Detailed Implementation

[0010] In the figure, a wave-shaped ring catalyst carrier includes a ring body 11. The ring body is made of ceramic, which is ball-milled, aged and refined into mud, shaped, dried and fired at high temperature, with alumina as the main raw material and auxiliary materials. The ring body is cylindrical. Outer protrusions 2 (twelve in this embodiment) are arranged axially at intervals on the outer surface of the ring body. The outer protrusions are smoothly connected by outer grooves 1. Inner protrusions 9 (twelve in this embodiment) are arranged axially at intervals on the inner surface of the ring body. The inner protrusions are smoothly connected by inner grooves 8. The outer and inner protrusions are staggered. The cross-sections of the outer and inner protrusions are approximately semi-circular. Axial flow holes are arranged axially on the outer protrusions. The two ends of the axial flow holes are axial flow cone holes 3. The holes are connected by axial flow straight holes 4. Circular arc grooves 5 are provided on both ends of the annular body between the outer convex bodies. Outer through grooves 6 are provided radially on the end face of the annular body between the inner concave bodies, with both ends communicating with the outer groove and the circular arc groove respectively. Inner through grooves 7 are provided radially on the end face of the annular body between the inner concave bodies, with both ends communicating with the inner groove and the circular arc groove respectively. The cross-sections of the circular arc grooves, outer through grooves, and inner through grooves are square, circular, or triangular, etc. Cross-shaped flow holes 10 are provided on the outer convex bodies in the horizontal and vertical directions. The diameter of the flow holes is the same as that of the axial flow straight holes. The outer convex bodies, outer concave bodies, inner convex bodies, inner concave bodies, circular arc grooves, outer through grooves, inner through grooves, and axial flow holes are integrally formed into a ceramic blank with the annular body, dried and shaped, and then fired at high temperature.

[0011] In this embodiment, model HT-1A (40) is designed with the inner diameter of the annular body being 0.6-0.7 times the outer diameter of the annular body, and the length of the annular body being 1.2-1.5 times the outer diameter of the annular body. The outer diameter of the annular body is 40 mm, the inner diameter is 26 mm, the wall thickness of the annular body is 7 mm, the length is 56 mm, and the maximum outer diameter (the maximum distance between the outer protrusions) is 40 + 2 × 8 = 56 mm.

Claims

1. A wave-shaped ring catalyst support, comprising a ring body (11) made of ceramic material, the ring body being cylindrical in shape, characterized in that: Outer protrusions (2) are arranged axially at intervals on the outer circular surface of the annular body. The outer protrusions are smoothly connected by outer grooves (1). Inner protrusions (9) are arranged axially at intervals on the inner hole surface of the annular body. The inner protrusions are smoothly connected by inner grooves (8). The outer and inner protrusions are arranged alternately. An axial flow hole is arranged on the outer protrusion along the axial direction. The two ends of the axial flow hole are axial flow cone holes (3). The two axial flow cone holes are connected by an axial flow straight hole (4). A circular arc groove (5) is arranged on the annular body end face between the outer protrusions. An outer through groove (6) with both ends communicating with the outer groove and the circular arc groove respectively, and an inner through groove (7) with both ends communicating with the inner groove and the circular arc groove respectively are arranged radially on the annular body end face between the inner concave bodies.

2. The wave-shaped ring catalyst support according to claim 1, characterized in that: Cross-shaped flow holes (10) are provided on the protrusions (2) in the horizontal and vertical directions.

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