A new type of tray

Abstract

The utility model belongs to the technical field of chemical production equipment, concretely relates to a novel tray, is equipped with the sieve hole of vertical and horizontal arrangement to several on the tray, the sieve hole is the two -way conical hole of round smooth surface transition, and the right conical hole and the inverted conical hole of two -way conical hole are through the first circular arc transition, and the adjacent two two -way conical holes are through the second circular arc transition. The right conical hole and the inverted conical hole of two -way conical hole are symmetrical conical hole, and the included angle between the generatrix of right conical hole and inverted conical hole and the central axis is 25 degrees. The surface of two -way conical hole is chromium plated, and the surface roughness of two -way conical hole after chromium plating is 0.8. The sieve hole inner wall and the orifice of the tray are all streamline of round smooth surface transition, and the surface roughness of fluid channel is smaller, can effectively avoid the sieve hole blockage due to the deposit in the fluid channel, and then improve the mass transfer and separation effect of tray.

Description

Technical Field

[0001] This utility model belongs to the field of chemical equipment technology, specifically relating to a novel tower tray. Background Technology

[0002] In the production of chemical products such as neopentyl glycol, perforated trays are commonly used mass transfer separation equipment for distillation, absorption, and other processes. Most existing perforated trays or plates have straight perforations, with a smaller number using unidirectional conical or a combination of straight and conical perforations. For example, patent document CN219423762U discloses a tray and stripping column with a perforation design combining straight and conical perforations. Another example is patent document CN219441704U, which discloses a double-conical perforated corrugated tray with a perforation combining unidirectional positive and negative conical perforations. Both of these perforation designs are optimizations of straight perforations, aimed at improving mass transfer and separation efficiency. The former, using a combination of straight and conical perforations, is prone to clogging after prolonged use because the inner wall of this combination is not a smooth curved surface. Although the latter uses a conical orifice design with a conical inner wall, the orifice openings at both ends are not smooth curved surfaces. This makes it easy for residue to accumulate at the openings, which can clog the sieve holes. Because the fluid channels of the two types of sieve holes mentioned above are not smoothly transitioned streamlined sieve holes, and their inner surface roughness is relatively large, residue is prone to accumulate inside or at the orifice openings, leading to partial sieve hole blockage and reducing the mass transfer and separation efficiency of the tray. Utility Model Content

[0003] To address the problem of poor mass transfer and separation performance caused by easy clogging of the sieve holes in existing trays, this invention provides a novel tray with streamlined sieve holes for the fluid channel. The inner wall and orifice of the sieve holes in this tray are streamlined with smooth curved transitions, and the surface roughness of the fluid channel is small. This effectively avoids clogging of the sieve holes due to accumulation in the fluid channel, thereby improving the mass transfer and separation performance of the tray.

[0004] The technical solution adopted by this utility model is as follows: a novel tower tray, on which a number of sieve holes are arranged in a longitudinal and transverse manner. The sieve holes are bidirectional conical holes with smooth curved transitions. The positive conical holes and the inverted conical holes of the bidirectional conical holes are transitioned by a first circular arc; and the two adjacent bidirectional conical holes are transitioned by a second circular arc.

[0005] Furthermore, the positive and inverted conical holes of the bidirectional conical hole are symmetrical conical holes.

[0006] Furthermore, the angle between the generatrix of the positive conical hole and the central axis of the inverted conical hole is 20-30 degrees.

[0007] Furthermore, the angle between the generatrix of the positive conical hole and the inverted conical hole and the central axis is 25 degrees.

[0008] Furthermore, the surface of the bidirectional tapered hole is chrome plated.

[0009] Furthermore, the surface roughness of the bidirectional tapered hole after chrome plating is not less than 1.6.

[0010] Furthermore, the surface roughness of the bidirectional tapered hole after chrome plating is 0.8.

[0011] The beneficial effects of this utility model are as follows: It provides a novel tray with streamlined sieve holes for the fluid channel. The inner wall and orifice of the sieve holes of this tray are both streamlined with smooth curved transitions. Furthermore, by chrome plating inside the fluid channel, the roughness of the fluid channel is reduced, which effectively avoids sieve hole blockage caused by accumulation in the fluid channel, improves the mass transfer and separation effect of the tray, reduces the loss of chemical liquid, saves resources, and improves economic efficiency. Attached Figure Description

[0012] Figure 1 This is a top view of the tray structure in Example 1;

[0013] Figure 2 This is a partial cross-sectional schematic diagram of the tray in Example 1. Detailed Implementation

[0014] Example 1, refer to Figure 1 and Figure 2 A novel tray is provided with a plurality of sieve holes arranged longitudinally and transversely. The sieve holes are bidirectional conical holes 1 with smooth curved transitions. The positive and negative conical holes of the bidirectional conical holes are transitioned by a first circular arc 3; adjacent bidirectional conical holes are transitioned by a second circular arc 2. The positive and negative conical holes of the bidirectional conical holes are symmetrical conical holes, and the angle between the generatrix of the positive and negative conical holes and the central axis is 25 degrees. Example

[0015] Based on the technical solution of Example 1, chromium is plated on the surface of the bidirectional tapered hole of the tray, and the surface roughness of the bidirectional tapered hole after chromium plating is 0.8 or 1.6. Alternatively, the entire surface of the tray can be chromium plated to prevent corrosion of the tray after long-term use and to improve its service life.

[0016] In chemical production, the mass transfer gas and liquid flow through the bidirectional conical orifices of the trays in both upward and downward directions within the tower will not cause sieve clogging due to scale buildup. Firstly, the inner walls and orifices of the sieves have smooth, curved transitions, resulting in a streamlined fluid channel with no dead zones where scale can accumulate. Secondly, the chrome plating inside the sieves minimizes surface roughness, ensuring a smooth fluid channel surface. This prevents scale buildup on the smooth, streamlined surface, effectively preventing scale buildup within the sieves and avoiding clogging during their service life. This improves the mass transfer and separation efficiency of the tower trays, reduces chemical liquid loss, conserves resources, and increases economic benefits.

Claims

1. A novel tray, wherein the tray is provided with a plurality of sieve holes arranged longitudinally and transversely, characterized in that: The sieve holes are bidirectional conical holes with smooth curved transitions. The positive and inverted conical holes of the bidirectional conical holes are transitioned by a first circular arc; adjacent bidirectional conical holes are transitioned by a second circular arc.

2. The novel tray according to claim 1, characterized in that: The bidirectional conical hole, including the positive and inverted conical holes, is a symmetrical conical hole.

3. The novel tray according to claim 2, characterized in that: The angle between the generatrix of the positive conical hole and the inverted conical hole and the central axis is 20-30 degrees.

4. The novel tray according to claim 3, characterized in that: The angle between the generatrix of the positive conical hole and the inverted conical hole and the central axis is 25 degrees.

5. The novel tray according to any one of claims 1-4, characterized in that: The surface of the bidirectional tapered hole is chrome plated.

6. The novel tray according to claim 5, characterized in that: The surface roughness of the bidirectional tapered hole after chrome plating is not less than 1.

6.

7. The novel tray according to claim 6, characterized in that: The surface roughness of the bidirectional tapered hole after chrome plating is 0.8.

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