Sulfuric acid drying device

Abstract

The sulfuric acid drying device comprises a settling cavity, a filtering cavity and a sulfuric acid drying cavity, one end of the settling cavity communicates with an air inlet pipe through a diverging pipe, a settling groove is formed in the bottom of the settling cavity, the other end of the settling cavity communicates with the bottom of the filtering cavity, a fan is installed at the bottom of the filtering cavity, and a filtering cloth bag assembly is installed in the filtering cavity; the top of the filtering cavity is connected with the bottom of a sulfuric acid drying cavity through a first pipeline, sulfuric acid is placed in the sulfuric acid drying cavity, the top of the sulfuric acid drying cavity is connected with a gas collecting device through a second pipeline, and the side edge of the sulfuric acid drying cavity is connected with a liquid injection pipe and a liquid discharge pipe; gas enters the settling cavity through the gas inlet pipe and the diverging pipe, impurities are settled and fall into the settling tank at the bottom of the settling cavity, and the filter cloth bag assembly is used for intercepting finer particulate matters doped in the gas, so that the purity of the gas is improved, sulfuric acid is prevented from being doped when the gas is in contact with sulfuric acid and dried, and the sulfuric acid is kept pure; the later-stage sulfuric acid recycling and reusing quality can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying towers, and in particular relates to a sulfuric acid drying device. Background Art

[0002] High concentration of sulfuric acid has strong water absorption and can be used as a dehydrating agent to carbonize carbohydrate-containing materials such as wood, paper, cotton and linen fabrics, and biological skins and flesh. The sulfuric acid drying process uses the strong water absorption of sulfuric acid to dry neutral or partially acidic gases and absorb and remove the water vapor contained in the gas.

[0003] However, when drying gas, conventional sulfuric acid drying devices usually directly pass the gas into a sulfuric acid pool to dry the gas without pre-treating the dried gas. Particulate impurities contained in the filtered gas will also be mixed into the sulfuric acid when the gas contacts the sulfuric acid, which will affect the purity of the sulfuric acid, thereby reducing the purity of the sulfuric acid and affecting the subsequent use of the sulfuric acid. Utility Model Content

[0004] The present application proposes a sulfuric acid drying device, which can achieve gas drying and pre-treat the gas before drying to prevent impurities in the gas from being mixed into sulfuric acid.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sulfuric acid drying device comprises a sedimentation chamber, a filtering chamber and a sulfuric acid drying chamber, wherein one end of the sedimentation chamber is connected with an air inlet pipe through a gradually expanding pipe, a sedimentation tank is arranged at the bottom of the sedimentation chamber, the other end of the sedimentation chamber is connected with the bottom of the filtering chamber, a fan is installed at the bottom of the filtering chamber, a filter bag assembly is installed in the filtering chamber, the top of the filtering chamber is connected with the bottom of the sulfuric acid drying chamber through a first pipeline, sulfuric acid is placed in the sulfuric acid drying chamber, the top of the sulfuric acid drying chamber is connected with a gas collecting device through a second pipeline, and the sides of the sulfuric acid drying chamber are respectively connected with a liquid injection pipe and a liquid discharge pipe.

[0007] Preferably, the embodiment of the present application also discloses that an ash collecting chamber is connected to the lower portion of the sedimentation tank, and an electric ash discharge valve is installed at the bottom of the ash collecting chamber.

[0008] In one embodiment of the present application, the inner wall of the filter chamber is connected to a wind plate, and the wind plate is arranged above the fan.

[0009] In one embodiment of the present application, a plurality of conical plates are disposed on the inner wall of the sulfuric acid drying chamber, the pointed ends of the conical plates are disposed downward, and the plurality of conical plates are disposed in a staggered manner.

[0010] In one embodiment of the present application, the filter cloth bag assembly includes a filter cloth bag, and the filter cloth bag is arranged in a spatial cylindrical shape.

[0011] In one embodiment of the present application, a support ring is provided on the outside of the filter cloth pocket, and the support ring is connected to the inner wall of the filter cavity through a connecting rod.

[0012] In one embodiment of the present application, a heating plate assembly is provided at the bottom of the sulfuric acid drying chamber, and an exhaust valve is installed at the top of the sulfuric acid drying chamber.

[0013] In summary, the technical solution proposed in the present application includes the following beneficial technical effects: the gas enters the sedimentation chamber through the intake pipe and the gradually expanding tube, the flow cross-section of the gas increases, the gas flow speed slows down, and the large particles of impurities mixed in the gas will settle. The impurities fall into the sedimentation trough at the bottom of the sedimentation chamber. The sedimentation trough provides a relatively static area for the settled impurities, preventing the impurities from being blown by the airflow again, which is beneficial to improving the impurity sedimentation efficiency. The gas enters the filter chamber, and the operation of the fan can increase the flow rate of the gas in the filter chamber, speeding up the speed of the gas passing through the filter bag assembly, which is beneficial to improving the gas filtration rate. The filter bag assembly is used to intercept finer particles mixed in the gas on the surface of the bag, which is beneficial to improving the purity of the gas, preventing the gas from being mixed with sulfuric acid when it contacts sulfuric acid and drying, affecting the purity of sulfuric acid, keeping the sulfuric acid pure, and improving the quality of later sulfuric acid recovery and reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a sulfuric acid drying device provided in one embodiment of the present application;

[0016] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a sulfuric acid drying device provided in one embodiment of the present application;

[0017] Figure 3 A schematic cross-sectional structure diagram of a sulfuric acid drying device provided in one embodiment of the present application;

[0018] Figure 4 This is a schematic cross-sectional structure diagram of a sulfuric acid drying device according to an embodiment of the present application;

[0019] Figure 5 A schematic diagram of a three-dimensional cross-sectional structure of a sulfuric acid drying device provided in one embodiment of the present application;

[0020] In the figure: sedimentation chamber-1, gradually expanding pipe-11, air inlet pipe-12, sedimentation tank-13, ash collecting chamber-131, electric ash discharge valve-132;

[0021] Filter chamber-2, fan-21, wind plate-22;

[0022] Sulfuric acid drying chamber-3, liquid injection pipe-31, liquid discharge pipe-32, cone plate-33, heating plate assembly-34, exhaust valve-35;

[0023] Filter bag assembly-4, filter bag-41, support ring-42, connecting rod-43;

[0024] Gas Collection Device-5

[0025] The first pipeline is 61, the second pipeline is 62. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0027] It should be noted that in the description of the present application, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0028] The terms "installed", "connected" and "connected" in this application should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0029] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0030] This embodiment provides a sulfuric acid drying device, see Figure 1-Figure 5 As shown, it includes a sedimentation chamber 1, a filter chamber 2 and a sulfuric acid drying chamber 3, one end of the sedimentation chamber 1 is connected to the air inlet pipe 12 through a gradually expanding pipe 11, a sedimentation tank 13 is provided at the bottom of the sedimentation chamber 1, the other end of the sedimentation chamber 1 is connected to the bottom of the filter chamber 2, a fan 21 is installed at the bottom of the filter chamber 2, a filter bag assembly 4 is installed in the filter chamber 2, the top of the filter chamber 2 is connected to the bottom of the sulfuric acid drying chamber 3 through a first pipeline 61, sulfuric acid is placed in the sulfuric acid drying chamber 3, the top of the sulfuric acid drying chamber 3 is connected to the gas collection device 5 through a second pipeline 62, and the sides of the sulfuric acid drying chamber 3 are respectively connected to an injection pipe 31 and a discharge pipe 32.

[0031] In the above embodiment, one end of the sedimentation chamber 1 is connected to the air inlet pipe 12 through the gradually expanding pipe 11, and the gas enters the sedimentation chamber 1 through the gradually expanding pipe 11 through the air inlet pipe 12. The flow cross-section of the gas increases, the gas flow speed slows down, and the large particles of impurities mixed in the gas will settle. A sedimentation trough 13 is provided at the bottom of the sedimentation chamber 1. The impurities fall into the sedimentation trough 13 at the bottom of the sedimentation chamber 1 due to gravity. The sedimentation trough 13 provides a relatively static area for the settled impurities to prevent the impurities from being blown by the airflow again, which is beneficial to improving the impurity sedimentation efficiency. The body enters the filter chamber 2, a fan 21 is installed at the bottom of the filter chamber, and a filter bag assembly 4 is installed in the filter chamber. The operation of the fan 21 can increase the flow rate of the gas in the filter chamber 2, thereby accelerating the speed at which the gas passes through the filter bag assembly 4, which is beneficial to improving the gas filtration rate. The filter bag assembly 4 is used to retain finer particles mixed in the gas on the surface of the bag, which is beneficial to improving the purity of the gas, preventing the gas from being mixed with sulfuric acid when it contacts sulfuric acid and drying, thereby affecting the purity of sulfuric acid, keeping the sulfuric acid pure, and being beneficial to improving the quality of sulfuric acid recovery and reuse in the later stage. Furthermore, the top of the filter chamber 2 is connected to the bottom of the sulfuric acid drying chamber 3 through the first pipeline 61, and the gas is injected into the sulfuric acid in the sulfuric acid drying chamber 3 through the second pipeline 62. The bubbles generated by the gas come into contact with the sulfuric acid, and the moisture contained in the gas is absorbed by the strong water absorption of the sulfuric acid, thereby achieving the drying of the gas. The top of the sulfuric acid drying chamber 3 is connected to the gas collecting device 5 through the pipeline, and the gas in the bubbles emerges from the sulfuric acid and enters the gas collecting device 5 through the pipeline at the top of the sulfuric acid drying chamber 3, and the dried gas is collected. In addition, keeping the sulfuric acid pure is also beneficial to improving the efficiency of the sulfuric acid drying gas.

[0032] In one embodiment of the present application, see Figure 2 and Figure 4 As shown, the lower part of the sedimentation tank 13 is connected to an ash collecting chamber 131 , and the bottom of the ash collecting chamber 131 is installed with an electric ash discharge valve 132 .

[0033] In the above embodiment, the bottom of the sedimentation trough 13 is connected to the ash collecting chamber 131, and the impurity particles falling into the sedimentation trough 13 will fall into the ash collecting chamber 131 uniformly. Then, the dust accumulated in the ash collecting chamber 131 will be uniformly removed and cleaned by opening the electric ash unloading valve 132, which is beneficial to improving the work efficiency of dust cleaning and further beneficial to improving the gas drying efficiency.

[0034] In one embodiment of the present application, refer to Figure 4 As shown, the inner wall of the filter chamber 2 is connected to a wind plate 22 , and the wind plate 22 is arranged above the fan 21 .

[0035] In the above embodiment, the wind plate 22 is arranged above the fan 21. The wind plate 22 can guide the direction of the airflow generated by the fan 21, so that the airflow flows more smoothly in the filter chamber 2, and reduce the gas vortex resonance generated by the airflow of the fan 21 in the filter chamber 2, thereby reducing noise and benefiting to improving the working environment of the staff.

[0036] In one embodiment of the present application, see Figure 3 As shown, the inner wall of the sulfuric acid drying chamber 3 is provided with a plurality of cone-shaped plates 33, the pointed ends of the cone-shaped plates 33 are arranged downward, and the plurality of cone-shaped plates 33 are arranged in a staggered manner.

[0037] In the above embodiment, the filtered gas is injected into the sulfuric acid in the sulfuric acid drying chamber 3 through the first pipeline 61, and the bubbles generated are too large, which will lead to insufficient contact between the gas and the sulfuric acid, and reduce the drying efficiency of the gas. By arranging a plurality of cone plates 33 on the inner wall of the sulfuric acid drying chamber 3 and the pointed ends of the cone plates 33 are arranged downward, the bubbles will touch the pointed ends of the cone plates 33 when moving upward in the sulfuric acid, thereby dividing the large bubbles into small bubbles. Furthermore, the staggered arrangement of the plurality of cone plates 33 can continuously divide the large bubbles into a plurality of small bubbles, so as to increase the contact area between the gas and the sulfuric acid, which is beneficial to improving the adequacy of the gas drying by the sulfuric acid.

[0038] In one embodiment of the present application, Figure 5 As shown, the filter cloth bag assembly 4 includes a filter cloth bag 41, and the filter cloth bag 41 is arranged in a spatial cylindrical shape.

[0039] In the above embodiment, the filter cloth pocket 41 is arranged in a spatial cylindrical shape, and the surface area is larger than that of the flat filter cloth, thereby increasing the contact area between the gas and the filter cloth, which is beneficial to improving the gas filtration efficiency.

[0040] In one embodiment of the present application, see Figure 5 As shown, a support ring 42 is arranged outside the filter cloth bag 41 , and the support ring 42 is connected to the inner wall of the filter cavity 2 through a connecting rod 43 .

[0041] In the above embodiment, since the filter cloth bag 41 is soft in texture, the filter cloth bag 41 is disturbed by the airflow in the filter chamber 2, and the outer wall of the filter cloth bag 41 is easily fitted, which will reduce the contact area between the filter cloth bag 41 and the gas in the filter chamber 2, affecting the gas filtration efficiency. A support ring 42 is provided on the outside of the filter cloth bag 41. The support ring 42 provides rigid support for the filter cloth bag 41 to prevent the filter cloth bag 41 from being deformed by the airflow, which is beneficial to improving the gas filtration efficiency. The support ring 42 is connected to the side wall of the filter chamber 2 by a connecting rod 43, which is beneficial to improving the stability of the support ring 42, thereby improving the stability of the filter cloth bag 41.

[0042] In one embodiment of the present application, see Figure 4 As shown, a heating plate assembly 34 is provided at the bottom of the sulfuric acid drying chamber 3, and an exhaust valve 35 is installed at the top of the sulfuric acid drying chamber 3.

[0043] In the above embodiment, after sulfuric acid absorbs too much moisture in the dried gas, the sulfuric acid will be diluted and the concentration will be reduced. At this time, the ability of sulfuric acid to absorb moisture decreases. A heating plate assembly 34 is provided at the bottom of the sulfuric acid drying chamber 3 to heat the diluted sulfuric acid to evaporate excess moisture in the sulfuric acid. The evaporated moisture is discharged through the exhaust valve 35 installed at the top of the sulfuric acid drying chamber 3, thereby increasing the concentration of sulfuric acid, which is beneficial to improving the gas filtration efficiency.

[0044] During the actual use of the present application: the gas enters the sedimentation chamber 1 through the gradually expanding tube 11 via the air inlet pipe 12, the flow cross section of the gas increases, the gas flow speed slows down, the large particle impurities contained in the gas settle under the action of gravity and fall into the sedimentation tank 13 at the bottom of the sedimentation chamber 1, and the gas enters the filter chamber 2. A fan 21 is installed at the bottom of the filter chamber, and a filter bag assembly 4 is installed in the filter chamber. The operation of the fan 21 can increase the flow rate of the gas in the filter chamber 2, thereby accelerating the speed of the gas passing through the filter bag assembly 4. The top of the filter chamber 2 is connected to the bottom of the sulfuric acid drying chamber 3 through the air pipe, and the gas is injected into the sulfuric acid in the sulfuric acid drying chamber 3 through the first pipeline 61. The bubbles generated by the gas contact with the sulfuric acid, and the strong water absorption of the sulfuric acid is used to absorb the moisture contained in the gas, thereby achieving the drying of the gas. The gas in the bubbles emerges from the sulfuric acid and enters the gas collecting device 5 through the second pipeline 62 at the top of the sulfuric acid drying chamber 3 to collect the dried gas.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features therein may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A sulfuric acid drying device, characterized in that: The invention comprises a sedimentation chamber (1), a filter chamber (2) and a sulfuric acid drying chamber (3); one end of the sedimentation chamber (1) is connected to an air inlet pipe (12) through a gradually expanding pipe (11); a sedimentation tank (13) is arranged at the bottom of the sedimentation chamber (1); the other end of the sedimentation chamber (1) is connected to the bottom of the filter chamber (2); a fan (21) is installed at the bottom of the filter chamber (2); a filter bag assembly (4) is installed in the filter chamber (2); the top of the filter chamber (2) is connected to the bottom of the sulfuric acid drying chamber (3) through a first pipeline (61); sulfuric acid is placed in the sulfuric acid drying chamber (3); the top of the sulfuric acid drying chamber (3) is connected to a gas collecting device (5) through a second pipeline (62); and the sides of the sulfuric acid drying chamber (3) are respectively connected to a liquid injection pipe (31) and a liquid discharge pipe (32).

2. The sulfuric acid drying device according to claim 1, characterized in that: The lower part of the sedimentation tank (13) is connected to an ash collecting chamber (131), and an electric ash discharge valve (132) is installed at the bottom of the ash collecting chamber (131).

3. The sulfuric acid drying device according to claim 1, characterized in that: The inner wall of the filter chamber (2) is connected to a wind plate (22), and the wind plate (22) is arranged above the fan (21).

4. The sulfuric acid drying device according to claim 1, characterized in that: The inner wall of the sulfuric acid drying chamber (3) is provided with a plurality of conical plates (33), the pointed ends of the conical plates (33) are arranged downward, and the plurality of conical plates (33) are arranged in a staggered manner.

5. The sulfuric acid drying device according to claim 1, characterized in that: The filter cloth bag assembly (4) comprises a filter cloth bag (41), and the filter cloth bag (41) is arranged in a spatial cylindrical shape.

6. The sulfuric acid drying device according to claim 5, characterized in that: A support ring (42) is arranged outside the filter cloth bag (41), and the support ring (42) is connected to the inner wall of the filter cavity (2) via a connecting rod (43).

7. The sulfuric acid drying device according to any one of claims 1 to 6, characterized in that: A heating plate assembly (34) is arranged at the bottom of the sulfuric acid drying chamber (3), and an exhaust valve (35) is installed at the top of the sulfuric acid drying chamber (3).

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