Sulfur dioxide desorption tower for sulfuric acid production

Abstract

The utility model discloses a sulfur dioxide desorption tower for sulfuric acid production, which comprises a desorption tower main body, an annular support frame is fixedly connected to the inner wall of the desorption tower main body close to the top, and a plurality of microporous honeycomb water absorption plates are fixedly mounted on the support frame along the circumferential direction at equal intervals. An annular limiting frame fixed on the inner wall of the desorption tower main body is arranged on the microporous honeycomb water absorption plate; a notch groove is formed in the center of the structure composed of the micropore honeycomb water absorption plates, grooves are formed in the bottoms of the micropore honeycomb water absorption plates, and flow guide cones are fixed to the positions, corresponding to the grooves, of the micropore honeycomb water absorption plates. After the notch grooves and the grooves are formed in the micropore honeycomb water absorption plate of the original plane integral structure, edges and corners of the bottom edge are increased, the flow guide cones are also increased, gathered water drops can drop back easily, the water absorption capacity is recovered gradually, and continuous and efficient water absorption of the micropore honeycomb water absorption plate is ensured through the circulation.

Description

Technical Field

[0001] This utility model relates to the field of desulfurization tower technology, specifically to a sulfur dioxide desorption tower for sulfuric acid production. Background Technology

[0002] Sulfuric acid is one of the most reactive binary inorganic oxyacids and is widely used in metallurgy, petroleum, chemical fibers, dyes, daily necessities, detergents, pharmaceuticals, military explosives, nuclear fuel for nuclear reactors, fertilizers, pesticides and other fields. It is an important industrial raw material.

[0003] Industrial sulfuric acid production uses sulfur, pyrite, and smelting flue gas as raw materials. The production process generates sulfur dioxide gas, which is polluting to the environment. Currently, the primary treatment method is to use sulfur dioxide desulfurization towers. A desulfurization tower is a tower-type device used to treat industrial waste gas for desulfurization. By formulating different dust removal and desulfurizing agents, it can achieve both dust removal and desulfurization effects simultaneously.

[0004] When treating sulfur dioxide in a desulfurization tower, the gas is introduced through an inlet pipe to contact the dust collector and desulfurizing agent. The sulfides within the sulfur dioxide are absorbed for desulfurization. The treated gas, due to its lower density, rises and is discharged. Since the gas carries moisture from the dust collector and desulfurizing agent, it needs to be removed by a water suction unit at the top of the desulfurization tower to reduce moisture loss and prevent excessive emissions. Existing desulfurization towers use a simple porous adsorption principle to absorb water. However, as the treatment process progresses, the water suction unit absorbs more and more water, reducing its ability to absorb further moisture and affecting subsequent water absorption. To address this issue, a novel sulfur dioxide desulfurization tower for sulfuric acid production is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a sulfur dioxide desorption tower for sulfuric acid production, which solves the problem that the water absorption capacity of existing sulfur dioxide desorption towers for sulfuric acid production decreases as the treatment process progresses due to the reliance on porous water-absorbing components with an integral structure.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A sulfur dioxide desorption tower for sulfuric acid production includes a tower body, a tower cover fixedly installed on the top of the tower body, and a connecting plate for connecting and fixing the tower body and the tower cover. An annular support frame is fixedly connected to the inner wall of the tower body near the top. Several microporous honeycomb water absorption plates are fixedly installed on the support frame at equal intervals along the circumference. An annular limiting frame is fixed on the microporous honeycomb water absorption plate and fixed on the inner wall of the tower body.

[0008] A notch is provided at the center of the structure composed of several microporous honeycomb water-absorbing plates, a groove is provided at the bottom of the microporous honeycomb water-absorbing plate, and a guide cone is fixed at the position of the microporous honeycomb water-absorbing plate corresponding to the groove.

[0009] Preferably, the outer diameters of the support frame and the limiting frame are equal, and the inner diameter of the support frame does not exceed the inner diameter of the limiting frame.

[0010] Preferably, the thickness of the microporous honeycomb absorbent plate is not less than 30 cm.

[0011] Preferably, the notch is circular in shape and the diameter of the notch is not less than 30 centimeters.

[0012] Preferably, the groove is a circular groove, the guide cone is conical, and the diameters of the groove and the guide cone are equal.

[0013] Preferably, the depth of the groove does not exceed half the thickness of the microporous honeycomb absorbent plate.

[0014] Preferably, the guide cone is a circular funnel-shaped structure with a drip hole at the bottom.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This invention increases the bottom surface area of ​​the microporous honeycomb water-absorbing plate by setting notches and grooves, and guides the rising water vapor by setting guide cones, thereby improving the absorption rate of water vapor by the microporous honeycomb water-absorbing plate. After setting notches and grooves, the bottom edge of the microporous honeycomb water-absorbing plate with notches and grooves is increased, as is the guide cone, which helps to collect water droplets and fall back, gradually restoring the water absorption capacity. This cycle ensures that the microporous honeycomb water-absorbing plate continuously and efficiently absorbs water, solving the problem that the water absorption capacity of the existing sulfur dioxide desorption tower for sulfur dioxide production, which relies solely on a single porous water-absorbing component, decreases as the treatment process progresses. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural diagram of the microporous honeycomb water-absorbing plate of this utility model at the corresponding position;

[0019] Figure 3 This is a bottom-view perspective view of the corresponding position of the microporous honeycomb water-absorbing plate of this utility model;

[0020] Figure 4 This is a three-dimensional view of the guide cone of this utility model.

[0021] In the diagram: 1. Main body of the desorption tower; 2. Tower cover; 3. Connecting plate; 4. Support frame; 5. Microporous honeycomb water absorption plate; 501. Notch; 502. Groove; 6. Limiting frame; 7. Guide cone; 701. Drip hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, this utility model provides a technical solution: a sulfur dioxide desorption tower for sulfuric acid production, including a desorption tower body 1, a tower cover 2 fixedly installed on the top of the desorption tower body 1, and a connecting plate 3 for connecting and fixing the desorption tower body 1 and the tower cover 2. An annular support frame 4 is fixedly connected to the inner wall of the desorption tower body 1 near the top. Several microporous honeycomb water absorption plates 5 are fixedly installed on the support frame 4 at equal intervals along the circumference.

[0024] The thickness of the microporous honeycomb water-absorbing plate 5 is not less than 30 cm. A notch 501 is provided at the center of the structure composed of several microporous honeycomb water-absorbing plates 5. The notch 501 is circular in shape and the diameter of the notch 501 is not less than 30 cm. A groove 502 is provided at the bottom of the microporous honeycomb water-absorbing plate 5. The depth of the groove 502 does not exceed half the thickness of the microporous honeycomb water-absorbing plate 5. A guide cone 7 is fixed at the position of the microporous honeycomb water-absorbing plate 5 corresponding to the groove 502. The guide cone 7 is a circular funnel-shaped structure with a drip hole 701 at the bottom. The groove 502 is a circular groove. The guide cone 7 is conical in shape and the diameters of the groove 502 and the guide cone 7 are equal.

[0025] The microporous honeycomb water absorption plate 5 is provided with an annular limiting frame 6 fixed on the inner wall of the desorption tower body 1. The outer diameters of the support frame 4 and the limiting frame 6 are equal, and the inner diameter of the support frame 4 does not exceed the inner diameter of the limiting frame 6.

[0026] Working principle:

[0027] By setting notches 501 and grooves 502 on the microporous honeycomb water-absorbing plate 5, its bottom surface area is increased. At the same time, by setting guide cones 7, the rising water vapor is guided, thereby improving the absorption rate of water vapor by the microporous honeycomb water-absorbing plate 5. After the microporous honeycomb water-absorbing plate 5 absorbs water, the water will accumulate at the bottom inside the microporous honeycomb water-absorbing plate 5 after the desorption tower stops desorption each night. The original planar microporous honeycomb water-absorbing plate 5 has increased bottom edge angles after setting notches 501 and grooves 502. The same applies to guide cones 7, which helps to collect water droplets and fall back, gradually restoring the water absorption capacity. This cycle ensures that the microporous honeycomb water-absorbing plate 5 can continuously and efficiently absorb water.

[0028] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sulfur dioxide desorption tower for sulfuric acid production, characterized in that: The system includes a desorption tower body (1), a tower cover (2) fixedly installed on the top of the desorption tower body (1), and a connecting plate (3) for connecting and fixing the desorption tower body (1) and the tower cover (2). An annular support frame (4) is fixedly connected to the inner wall of the desorption tower body (1) near the top. Several microporous honeycomb water absorption plates (5) are fixedly installed on the support frame (4) at equal intervals along the circumference. An annular limiting frame (6) is fixed on the microporous honeycomb water absorption plate (5) and fixed on the inner wall of the desorption tower body (1). A notch (501) is provided at the center of the structure composed of several microporous honeycomb water-absorbing plates (5), and a groove (502) is provided at the bottom of the microporous honeycomb water-absorbing plate (5). A guide cone (7) is fixed at the position of the microporous honeycomb water-absorbing plate (5) corresponding to the groove (502).

2. The sulfur dioxide desorption tower for sulfuric acid production according to claim 1, characterized in that: The outer diameters of the support frame (4) and the limiting frame (6) are equal, and the inner diameter of the support frame (4) does not exceed the inner diameter of the limiting frame (6).

3. The sulfur dioxide desorption tower for sulfuric acid production according to claim 1, characterized in that: The thickness of the microporous honeycomb water-absorbing plate (5) is not less than 30 cm.

4. The sulfur dioxide desorption tower for sulfuric acid production according to claim 1, characterized in that: The notch (501) is circular in shape, and the diameter of the notch (501) is not less than 30 cm.

5. The sulfur dioxide desorption tower for sulfuric acid production according to claim 1, characterized in that: The groove (502) is a circular groove, and the guide cone (7) is conical, with the groove (502) and the guide cone (7) having the same diameter.

6. The sulfur dioxide desorption tower for sulfuric acid production according to claim 1, characterized in that: The depth of the groove (502) does not exceed half the thickness of the microporous honeycomb water-absorbing plate (5).

7. The sulfur dioxide desorption tower for sulfuric acid production according to claim 1, characterized in that: The guide cone (7) is a circular funnel-shaped structure with a drip hole (701) at the bottom.

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