A combined filler

Abstract

The present invention relates to a chemical tower structured packing, and in particular to a combined packing. Each layer of packing is composed of an internal packing and a supporting packing; the supporting packing includes a side tube and a rib plate, the side tube is a tube-shaped tube, the rib plate is fixedly connected to the inside of the side tube along the diagonal line, the rib plate is located at the lower part of the side tube, and a distance is left between the bottom end of the rib plate and the bottom edge of the side tube; the internal packing is placed in the side tube, the rib plate supports the internal packing, and the top of the side tube is symmetrically provided with notches, and the top surface of the internal packing is lower than the lowest end of the notches. The present invention has small resistance pressure drop, high separation efficiency, large flux, large operating flexibility, strong adaptability, and good economy.

Description

Technical Field

[0001] The present invention relates to structured packings for chemical towers, and particularly to a combined packing. Background Art

[0002] Structured packings for chemical towers are packings arranged in a uniform geometric pattern and neatly stacked inside the tower. They define the flow path of the gas flow, improve channeling, wall flow, and wetting performance, reduce resistance, and at the same time provide more gas-liquid contact area, thereby improving the mass transfer effect.

[0003] However, the existing structured packings for chemical towers have the following deficiencies: large resistance pressure drop; low separation efficiency; low flux; small operating flexibility and poor adaptability; poor economy. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a combined packing, which has small resistance pressure drop; high separation efficiency; large flux; large operating flexibility and strong adaptability; good economy.

[0005] To achieve the above object, the present invention is implemented by adopting the following technical solutions:

[0006] A combined packing, each layer of the packing is composed of an internal packing and a support packing combined; the support packing includes a side cylinder and a rib plate, the side cylinder is in a cylindrical shape, the rib plate is fixedly connected inside the side cylinder along the diagonal, the rib plate is located at the lower part of the side cylinder, and there is a distance between the bottom end of the rib plate and the bottom edge of the side cylinder; the internal packing is placed inside the side cylinder, the rib plate supports the internal packing, the side cylinder is symmetrically provided with notches at the top, and the top surface of the internal packing is lower than the lowest end of the notches.

[0007] The depth of the notches is equal to the distance between the bottom end of the rib plate and the bottom edge of the side cylinder.

[0008] The side cylinder and the rib plate are provided with ventilation holes.

[0009] The ventilation holes are circular, oval or polygonal.

[0010] The cross-section of the side cylinder is polygonal.

[0011] The cross-section of the side cylinder is rectangular, pentagonal, hexagonal or triangular.

[0012] The shape of the internal packing corresponds to the shape inside the side cylinder, and the outer diameter of the internal packing is the same as the inner diameter of the side cylinder.

[0013] The internal packing is a corrugated plate packing or a wire mesh packing.

[0014] The combined packings are installed staggeredly up and down, and the cylinder wall of the side cylinder of the upper-layer packing is stuck in the notches of the lower-layer packing.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The internal packing of the present invention has a large specific surface area and a small pressure drop.

[0017] 2. The support packing of the present invention has high strength and functions to redistribute the air flow.

[0018] 3. Both the internal packing and the support packing in the present invention play a role in mass transfer.

[0019] 4. The gas and liquid in the present invention are evenly distributed multiple times, and the mass transfer effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the main schematic view of the structure of the present invention;

[0021] Figure 2 is Figure 1 the sectional view taken along the direction A of

[0022] Figure 3 is Figure 1 the sectional view taken along the direction B of

[0023] Figure 4 is the installation schematic diagram of the upper and lower layer packings of the present invention.

[0024] In the figure: 1 - side cylinder, 2 - rib plate, 3 - notch, 4 - internal packing, 5 - bottom end of rib plate, 6 - bottom edge of side cylinder, 7 - upper layer packing, 8 - lower layer packing DETAILED DESCRIPTION OF THE INVENTION

[0025] The following further describes the specific embodiments of the present invention with reference to the drawings:

[0026] Example:

[0027] As Figures 1 to 3 shown, a combined packing, each layer of packing is composed of an internal packing 4 and a support packing.

[0028] The support packing includes a side cylinder 1 and a rib plate 2. The side cylinder 1 is of a cylindrical structure, and the cross-section of the side cylinder 1 is a polygon, preferably a square, a regular pentagon, a regular hexagon or an equilateral triangle. In this embodiment, it is a square. Notches 3 are symmetrically arranged at the middle positions of the four sides of the side cylinder 1.

[0029] The rib plate 2 is fixedly connected inside the side cylinder 1 along the diagonal of the side cylinder 1. The rib plate 2 is located at the lower part of the side cylinder 1, and there is a distance between the bottom end 5 of the rib plate and the bottom edge 6 of the side cylinder. The depth of the notch 3 is equal to the distance between the bottom end 5 of the rib plate and the bottom edge 6 of the side cylinder.

[0030] The internal packing 4 is a corrugated plate packing or a wire mesh packing. The shape of the internal packing 4 corresponds to the internal shape of the side cylinder 1, and the outer diameter of the internal packing 4 is the same as the inner diameter of the side cylinder 1.

[0031] The internal packing 4 is placed inside the side cylinder 1. The rib plate 2 supports the internal packing 4, and the top surface of the internal packing 4 is lower than the lowest end of the notch 3.

[0032] The rib plate 2 of the side cylinder 1 has ventilation holes, which are circular, elliptical or polygonal, and the ventilation holes increase the gas flow area.

[0033] As Figure 4 shown, when installing the packing, the lower layer of packing 8 is arranged side by side on the packing support device of the tower. The internal packing 4 is on the top, and the upper layer of packing 7 is placed staggeredly on the lower layer of packing 8, and the barrel wall of its side cylinder 1 is stuck in the notch 3 of the side cylinder 1 of the lower layer of packing.

[0034] The gas passes through the bottom of the supporting packing, and the bottom of the supporting packing evenly distributes the gas. After entering the internal packing 4, it passes through the bottom of the upper layer of staggeredly placed supporting packing again, and the gas is evenly distributed again and then enters the internal packing 4. At the same time, after the upper liquid is distributed to the internal packing 4, it evenly wets the packing and undergoes mass transfer absorption with the lower gas. The liquid flows downward along the bottom of the supporting packing and also undergoes mass transfer absorption on the surface of the supporting packing. The liquid then enters the internal packing 4 of the lower layer placed staggeredly and then enters the bottom of the supporting packing. During the whole process, both the gas and the liquid are continuously and evenly distributed multiple times, with good mass transfer effect and high efficiency.

[0035] The present invention has small resistance pressure drop, high separation efficiency, large throughput, large operating flexibility, strong adaptability, and good economy.

[0036] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A combined filler, characterized in that: Each layer of packing is composed of internal packing and supporting packing; the supporting packing includes a side cylinder and a rib plate. The side cylinder is cylindrical, and the rib plate is fixedly connected inside the side cylinder along the diagonal. The rib plate is located at the lower part of the side cylinder, and there is a distance between the bottom end of the rib plate and the bottom edge of the side cylinder; the internal packing is placed inside the side cylinder, and the rib plate supports the internal packing. There are symmetrically arranged notches at the top of the side cylinder, and the top surface of the internal packing is lower than the lowest end of the notch. The side cylinder and the rib plate are provided with ventilation holes. The cross-section of the side cylinder is polygonal. The shape of the internal packing corresponds to the internal shape of the side cylinder, and the outer diameter of the internal packing is the same as the inner diameter of the side cylinder. The internal packing is corrugated plate packing or wire mesh packing. The combined packings are installed staggeredly up and down, and the barrel wall of the upper layer of packing is stuck in the notch of the lower layer of packing. The depth of the notch is equal to the distance between the bottom end of the rib plate and the bottom edge of the side cylinder.

2. The combined filler according to claim 1, characterized in that: The ventilation holes are circular, oval or polygonal.

3. The combined filler according to claim 1, characterized in that: The cross-section of the side cylinder is rectangular, pentagonal, hexagonal or triangular.

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