Diluted sulfuric acid degassing device
By designing a sulfuric acid dilute acid degassing device and utilizing a degassing tower and a spray mechanism to mix the dilute acid with air to recover sulfur dioxide, the problems of high dilute acid discharge treatment cost and low recovery rate are solved, and efficient recovery of dilute acid and low loss are achieved.
Patent Information
- Application Number
- CN202422613750.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-29
AI Technical Summary
In the prior art, when sulfuric acid plants discharge dilute acid, the high sulfur content leads to high treatment costs, large sulfur dioxide losses, and low recovery rates.
A sulfuric acid dilute acid degassing device is designed, which includes a degassing tower shell, a spray mechanism and an air inlet. The spray mechanism mixes the dilute acid with air to form sulfur dioxide, which is recovered under negative pressure. The dilute acid is discharged by inclined gravity in the shell, thereby achieving efficient recovery of the dilute acid.
The recovery rate of dilute acid is improved, the treatment cost is reduced, the discharge standard is met, and the loss of sulfur dioxide is reduced.
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Figure CN223366302U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of smelting equipment, in particular to a sulfuric acid dilute acid degassing device. Background Art
[0002] Sulfuric acid recovery and discharge are crucial processes in sulfuric acid smelting plants. After sulfur dioxide flue gas is cooled and dusted by high-efficiency scrubbers and further cooled by gas cooling towers, it produces large amounts of dilute acid with a high sulfur content. This high sulfur content causes the acid to fail to meet discharge standards, necessitating the use of large amounts of alkali for neutralization, resulting in high treatment costs. Furthermore, the discharge of this high-sulfur acid results in high sulfur dioxide losses and reduced recovery rates. Utility Model Content
[0003] In order to solve the above problems, the utility model provides a sulfuric acid dilute acid degassing device.
[0004] The technical solution of the utility model is achieved as follows: a sulfuric acid dilute acid degassing device, comprising a degassing tower shell, the degassing tower shell is provided with a plurality of manholes, the upper and middle parts of the degassing tower shell are respectively provided with a spray mechanism A and a spray mechanism B, one end of the spray mechanism A and the spray mechanism B are respectively connected to the dilute acid inlet A and the dilute acid inlet B, and the spray mechanism is provided with a plurality of nozzles, the degassing tower shell is provided with an air inlet A and an air inlet B on the side below the spray mechanism B, the upper part of the degassing tower shell is provided with an air outlet, and the bottom side is provided with an acid outlet;
[0005] Preferably, the bottom inclination angle of the degassing tower shell is 5°;
[0006] Preferably, the air inlet A and the air inlet B are distributed in the upper, middle and lower parts of the degassing tower shell, and the air inlet is arranged at an angle of 45° upward.
[0007] The beneficial effects of the utility model are as follows: the utility model forms a container by utilizing a degassing tower shell, a spray mechanism, an air outlet, an acid outlet, and an air inlet; when dilute acid with a higher sulfur content enters the degassing tower through a circulation pump and the upper spray mechanism, the dilute acid with a higher sulfur content enters the interior of the degassing tower through evenly distributed nozzles, and air enters the interior of the degassing tower through the air inlet; the air and the dilute acid with a higher sulfur content form sulfur dioxide inside the degassing tower shell; because the sulfur dioxide outlet at the top of the outer shell is connected to the flue gas duct, under the action of negative pressure, sulfur dioxide enters the flue gas through the air outlet for recycling; the dilute acid with a lower sulfur content in the flue gas gathers inside the outer shell; because the lower surface of the outer shell is inclined at 5°, the dilute acid flows to the acid outlet by gravity, is discharged into the container through the acid outlet for recycling, and is discharged externally. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a structural diagram of the utility model;
[0009] Figure 2 It is a top view of the utility model.
[0010] Parts Description: 1. Air outlet, 2. Dilute acid inlet A, 3. Degassing tower shell, 4. Manhole, 5. Dilute acid inlet B, 6. Manhole, 7. Acid outlet, 8. Air inlet B, 9. Manhole, 10. Air inlet A, 11. Manhole, 12. Manhole, 13. Spray mechanism A, 14. Spray mechanism B. DETAILED DESCRIPTION
[0011] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0012] In the description of the present invention, it should be understood that the terms "upper", "lower", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.
[0013] See also Figure 1 As shown, a sulfuric acid dilute acid degassing device includes a degassing tower shell 3, a spray mechanism A13, a spray mechanism B14, a dilute acid inlet A2, and a dilute acid inlet B5. The spray mechanism A13 and the spray mechanism B14 are arranged inside the degassing tower shell 3, and the two spray mechanisms are distributed in the middle and upper part. Multiple nozzles are installed and evenly distributed. Manholes 4, 6, 9, 11, and 12 are provided on the surface of the degassing tower shell 3, which are distributed in the upper, middle, and lower parts. The bottom of the degassing tower shell 3 is opened and connected to the acid outlet 7. The bottom of the degassing tower shell 3 is inclined at an angle of 5°. The middle and lower openings of the degassing tower shell 3 are connected to the air inlet B8 and the air inlet A10 inclined upward at 45°. An air outlet 1 is provided on the top of the shell, and the air outlet 1 is connected to the flue gas duct.
[0014] By utilizing the container formed between the degassing tower shell 3, spray mechanism A13, spray mechanism B14, gas outlet 1, acid outlet 7, air inlet A8, and air inlet B10, dilute acid with a high sulfur content is converted into dilute acid with a low sulfur content, thereby improving the recovery rate, achieving external discharge conditions, and reducing costs.
[0015] During use, the dilute acid with a higher sulfur content enters the middle and upper spray mechanisms, and then enters the interior of the degassing tower through evenly distributed nozzles. Air enters the interior of the degassing tower through air inlet A8 and air inlet B10. The air and the dilute acid with a higher sulfur content form sulfur dioxide inside the degassing tower. Under the action of negative pressure, the sulfur dioxide enters the flue gas through the air outlet 1 for recycling, and the dilute acid with a lower sulfur content in the flue gas gathers inside the degassing tower. Since the bottom of the degassing tower is inclined at 5°, the dilute acid flows to the acid outlet 7 by gravity, and is discharged into the container through the acid outlet 7 for recycling and then discharged externally.
[0016] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0017] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims
1. A sulfuric acid dilute acid degassing device, comprising a degassing tower shell (3), wherein the degassing tower shell (3) is provided with a plurality of manholes, characterized in that A spray mechanism A (13) and a spray mechanism B (14) are provided in the upper and middle parts of the degassing tower shell (3), respectively. One end of the spray mechanism A (13) and the spray mechanism B (14) are connected to the dilute acid inlet A (2) and the dilute acid inlet B (5), respectively. A plurality of spray heads are provided on each of the spray mechanisms. An air inlet A (10) and an air inlet B (8) are provided on the degassing tower shell (3) below the spray mechanism B (14). An air outlet (1) is provided on the upper part of the degassing tower shell (3), and an acid outlet (7) is provided on the bottom side.
2. A sulfuric acid dilute acid degassing device as claimed in claim 1, characterized in that The bottom inclination angle of the degassing tower shell (3) is 5°.
3. A sulfuric acid dilute acid degassing device as claimed in claim 1, characterized in that The air inlet A (10) and the air inlet B (8) are distributed at the top, middle and bottom of the degassing tower shell (3), and the air inlet is arranged at an angle of 45 degrees upward.