Packing element, structured packing and preparation method thereof

Abstract

The invention relates to the technical field of packing, and discloses a packing element, structured packing and a preparation method thereof.The packing element comprises a plurality of basic elements connected in sequence, the front faces of the multiple basic elements located in the middle are arranged to be of a parallelogram structure, and the basic elements on the two sides are arranged to be of an isosceles trapezoid structure; an oblique angle structure is formed between every two adjacent basic elements, and a plurality of through holes are formed in the basic elements; the oblique angle structure comprises an external corner formed by the upper bottom of one basic element and the lower bottom of the previous basic element, and an internal corner formed by the lower bottom of one basic element and the upper bottom of the next basic element; the structured packing comprises a plurality of packing elements which are arranged in parallel and staggered into a cylindrical structure. The connecting assemblies and the packing elements are arranged in a matched mode to form the structured packing of a cylindrical structure in a combined mode, the outer diameter of the structured packing, namely the number of the packing elements, can be adjusted according to the inner diameter of a packed tower in the using process, and the using performance of the structured packing is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of packing, and particularly relates to a packing element, a structured packing and a preparation method thereof. Background Art

[0002] The gas-liquid mass transfer of high-viscosity fluids widely exists in processes such as carbon capture and devolatilization of high-performance polymers. The viscosity of high-viscosity fluids is usually dozens of times, or even thousands of times that of aqueous solutions. Since the interphase mass transfer coefficient has a strong negative correlation with the fluid viscosity, the increase in viscosity leads to a sharp decrease in mass transfer efficiency and a sharp increase in energy consumption. As the main mass transfer and separation equipment, the packing is the key factor affecting the mass transfer efficiency. Packings mainly include dumped packings and structured packings. Among them, structured packings are packings arranged in a uniform geometric pattern and neatly stacked in the tower. Due to their advantages such as large specific surface area, small pressure drop, uniform fluid distribution, and high mass transfer and heat transfer efficiency, they have been widely used.

[0003] There are many existing structured packings, but when the existing structured packings are used, they are rather troublesome, unable to be adjusted in size according to requirements, and unable to improve the use performance of orifice-plate corrugated structured packings. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the present invention to solve its technical problems is: a packing element, including a plurality of sequentially connected basic elements. The fronts of the plurality of basic elements located in the middle are arranged in a parallelogram structure, and the basic elements on both sides are arranged in an isosceles trapezoid structure. An oblique angle structure is formed between two adjacent basic elements, and a plurality of through holes are provided on the basic elements.

[0005] The oblique angle structure includes a positive angle formed by the upper base of one basic element and the lower base of the previous basic element, and a negative angle formed by the lower base of one basic element and the upper base of the next basic element.

[0006] Preferably, the whole packing element is in a rectangular structure, and the two basic elements located at one pair of oblique angles are arranged in a triangular structure.

[0007] Preferably, the angle of the positive angle is between 90° and 120°, and the angle of the negative angle is the same as that of the positive angle.

[0008] The present invention also discloses a structured packing, including a plurality of packing elements as described in any one of the claims. The plurality of packing elements are arranged in a parallel and staggered manner to form a cylindrical structure, and the length of the packing element gradually decreases from the middle to both sides.

[0009] Preferably, the structured packing further includes a connection component arranged outside the packing element for fixing.

[0010] Preferably, the connecting component includes a plurality of fixing rings arranged at equal intervals along the height direction of the packing element, and a connecting structure arranged at the end of the fixing ring.

[0011] Preferably, the connecting structure includes a through groove opened at one end of the fixing ring, and a clamping post matched with the through groove is arranged at the end of the fixing ring far away from the through groove.

[0012] Preferably, the cross section of the clamping post is in a water droplet shape, and the clamping post is made of an elastic material.

[0013] The invention also discloses a preparation method of structured packing, which includes the following steps:

[0014] S1. Welding a plurality of basic elements to form a single packing element; S2. Arranging and combining two or more packing elements in parallel, with the external angle of the previous packing element abutted against the internal angle of the next packing element; S3. Surrounding the combined packing elements with a plurality of fixing rings, and fixing them by squeezing and pushing the clamping posts into the through grooves.

[0015] The beneficial effects of the invention are as follows:

[0016] The invention adopts the cooperative setting between the connecting component and the packing element to form a cylindrical structured packing in combination. The fixing rings are connected to the outside of the packing element through the arranged through grooves and clamping posts. During use, the outer diameter of the structured packing, that is, the number of packing elements, can be adjusted according to the inner diameter of the packing tower, and the connecting components can be combined according to requirements. A plurality of fixing rings are sequentially clamped through the connecting structure, improving the use performance of the structured packing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the packing element in the invention;

[0018] Figure 2 is a plan view of the structured packing in the invention;

[0019] Figure 3 is a schematic structural view of the connecting component in the invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments. The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0021] Embodiment

[0022] As Figures 1-3 shown, a packing element has an overall rectangular structure and is mainly composed of more than two basic elements 1 connected in sequence. The front surface of the basic element 1 in the middle is arranged in a parallelogram structure. The basic elements 1 extending from the middle to both sides are arranged in an isosceles trapezoid structure. The two basic elements 1 at a pair of diagonal corners in the upper left and lower right positions are arranged in a triangular structure. There is an angled structure 2 between two adjacent basic elements 1. At the same time, a number of through holes 11 are provided on the basic element 1.

[0023] The angled structure 2 includes a positive angle 21 formed by the upper base of one basic element 1 and the lower base of the previous basic element 1, and a negative angle 22 formed by the lower base of one basic element 1 and the upper base of the next basic element 1. The angle of the positive angle 21 is between 90° and 120°, and the angle of the negative angle 22 is the same as that of the positive angle 21. In this embodiment, the angle is 120°.

[0024] A structured packing mainly consists of packing elements and a connecting component 3. The number of packing elements is more than two. A plurality of packing elements are arranged in a parallel and staggered manner to form a cylindrical structure, and the length of the packing elements gradually decreases from the middle to both sides. The connecting component 3 is arranged outside the packing elements and includes a plurality of fixing rings 31 arranged at equal intervals along the height direction of the packing elements and a connecting structure 32 arranged at the end of the fixing rings 31, which mainly fixes a plurality of combined packing elements. The connecting structure 32 is composed of a through groove 321 and a clamping post 322. The through groove 321 is opened at one end of one side of the fixing ring 31. The clamping post 322 is made of an elastic material and is fixed and connected to the end of the fixing ring 31 far from the through groove 321. The cross-section of the clamping post 322 is in a water droplet shape. The through groove 321 and the clamping post 322 are matched to connect the fixing rings 31 end to end or to connect with adjacent fixing rings 31. By using the cooperation between the connecting component 3 and the packing elements, a structured packing in a cylindrical structure is formed. The fixing rings 31 are connected to the outside of the packing elements through the provided through groove 321 and clamping post 322. During use, the outer diameter of the structured packing, that is, the number of packing elements, can be adjusted according to the inner diameter of the packing tower, and then the connecting component 3 can be combined according to requirements. A plurality of fixing rings 31 are sequentially clamped through the connecting structure, improving the use performance of the structured packing.

[0025] A preparation method of a structured packing is as follows:

[0026] S1. More than two basic elements 1 are welded and formed to form a single packing element;

[0027] S2. More than two packing elements are arranged in parallel combination, and the positive angle 21 of the previous packing element abuts against the negative angle of the next packing element;

[0028] S3. Surround the outside of the combined packing elements with more than two fixing rings 31 at equal intervals, and push the clamping posts 322 into the through grooves 321 by extrusion for fixation.

[0029] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative efforts shall fall within the scope of protection of the present invention. Structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented by conventional means in the art without special instructions and limitations.

Claims

1. A stuffing element, characterized in that: It includes a plurality of sequentially connected basic elements (1). The fronts of the plurality of basic elements (1) located in the middle are arranged in a parallelogram structure, and the basic elements (1) on both sides are arranged in an isosceles trapezoid structure. An oblique angle structure (2) is formed between two adjacent basic elements (1), and a number of through holes (11) are formed in the basic elements (1). The oblique angle structure (2) includes a positive angle (21) formed by the upper base of one basic element (1) and the lower base of the previous basic element (1), and a negative angle (22) formed by the lower base of one basic element (1) and the upper base of the next basic element (1).

2. A packing element according to claim 1, characterized in that: The packing element as a whole is in a rectangular structure, and the two basic elements (1) located at one pair of oblique angles are arranged in a triangular structure.

3. A packing element according to claim 1, characterized in that: The angle of the positive angle (21) is between 90° and 120°, and the angle of the negative angle (22) is the same as that of the positive angle (21).

4. A structured packing comprising a plurality of packing elements as described in any one of claims 1-3, characterized in that: A number of the packing elements are arranged in a parallel and staggered manner to form a cylindrical structure, and the length of the packing elements gradually decreases from the middle to both sides.

5. The structured packing according to claim 4, wherein: The structured packing further includes a connection assembly (3) arranged outside the packing elements for fixation.

6. The structured packing according to claim 5, characterized in that: The connection assembly (3) includes a plurality of fixing rings (31) arranged at equal intervals along the height direction of the packing elements, and a connection structure (32) arranged at the end of the fixing rings (31).

7. A structured packing according to claim 6, characterized in that: The connection structure (32) includes a through groove (321) formed at one end of one side of the fixing ring (31), and a clamping post (322) matching the through groove (321) is arranged at the end of the fixing ring (31) far from the through groove (321).

8. A structured packing according to claim 7, characterized in that: The cross section of the clamping post (322) is in a water droplet shape, and the clamping post (322) is made of an elastic material.

9. A method for preparing the structured packing according to claim 4, characterized in that, It includes the following steps: S1. Weld a plurality of basic elements (1) to form a single packing element; S2. Arrange and combine two or more packing elements in parallel, and the positive angle (21) of the previous packing element abuts against the negative angle of the next packing element; S3. Surround a plurality of fixing rings (31) outside the combined packing elements, and squeeze the clamping post (322) into the through groove (321) for fixation.

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