Flue gas desulfurization equipment using limestone powder
By using limestone powder and U-shaped tower structures in flue gas desulfurization equipment to separate the spray components and dust reduction components, the problem of slurry and low-temperature water precipitation in gypsum desulfurization method is solved, and the effective precipitation of sulfur dioxide and dust in flue gas is achieved and Separation simplifies sulfide treatment and ensures that the flue gas is dry and pollution-free.
Patent Information
- Application Number
- CN202420747482.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-11
AI Technical Summary
When using the gypsum desulfurization method, calcium carbonate slurry precipitates in the slurry tank, increasing the difficulty of sulfide treatment. It is difficult for the prior art to effectively separate slurry from low-temperature water, resulting in complex sulfide treatment.
Design a flue gas desulfurization equipment using limestone powder, adopts a U-shaped tower structure, installs calcium carbonate slurry spraying components and dust reduction spraying components, and sprays calcium carbonate slurry, limestone powder raw slurry and low-temperature dust reduction water through the spray head. , precipitate sulfur dioxide and dust, use filters and dehumidifiers to treat moisture in the flue gas, and prevent dust collection blocks from accumulating dust.
Effectively precipitate and separate sulfur dioxide and dust in the flue gas, avoid low-temperature water mixing into the calcium carbonate slurry, simplify sulfide treatment, and ensure that the discharged flue gas is dry and pollution-free.
Smart Images
Figure CN222286902U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flue gas desulfurization, in particular to a flue gas desulfurization device using limestone powder. Background Art
[0002] At present, desulfurization generally refers to the process of removing sulfur from fuel before combustion and before flue gas emission. It is one of the important technical measures to prevent and control air pollution. At present, there are generally three desulfurization methods: desulfurization before combustion, desulfurization during combustion and desulfurization after combustion. With the development of industry and the improvement of people's living standards, the thirst for energy is also increasing. Sulfur dioxide in coal-fired flue gas has become the main cause of air pollution. Reducing sulfur dioxide pollution has become a top priority for today's atmospheric environmental governance. Many flue gas desulfurization processes have been widely used in industry, and they also have important practical significance for the treatment of exhaust gases from various boilers and incinerators.
[0003] Among them, sulfur dioxide in flue gas emitted by small factories is usually desulfurized by gypsum desulfurization method to ensure that the exhausted flue gas meets the emission standards.
[0004] When the market uses the gypsum desulfurization method, the calcium carbonate slurry spray assembly and the dust reduction spray assembly are often installed together, causing the calcium carbonate slurry to be precipitated in the slurry pool together with the low-temperature water, increasing the difficulty of sulfide treatment. Therefore, a new technical solution needs to be designed to solve this problem. Utility Model Content
[0005] The utility model aims to provide a flue gas desulfurization device using limestone powder, which solves the problems raised in the background technology.
[0006] To achieve the above object, the utility model provides the following technical solution: a flue gas desulfurization device using limestone powder, comprising a U-shaped tower, the U-shaped tower is a U-shaped connected tower, and a separation mechanism is installed on the U-shaped tower;
[0007] The separation mechanism includes a calcium carbonate slurry spray assembly fixedly installed on one side of the U-shaped tower, a dust reduction spray assembly fixedly installed on the other side of the U-shaped tower, a first collecting box installed in communication with one side of the bottom of the U-shaped tower, a second collecting box installed in communication with the other side of the bottom of the U-shaped tower, and a smoke exhaust pipe installed in communication with the bottom of one side of the U-shaped tower. The calcium carbonate slurry spray assembly corresponds to the first collecting box, and the dust reduction spray assembly corresponds to the second collecting box.
[0008] As an optional solution of the technical solution of the present application, the calcium carbonate slurry spray assembly and the dust reduction spray assembly are both installed with multiple groups of equidistantly distributed spray heads, the calcium carbonate slurry spray assembly is installed in communication with the limestone powder slurry, and the dust reduction spray assembly is installed in communication with a low-temperature dust reduction water source.
[0009] As an optional solution of the technical solution of the present application, one end of the smoke exhaust pipe is connected to a filter installed, and the other end of the smoke exhaust pipe is connected to a dehumidifier installed to remove moisture from the smoke.
[0010] As an optional solution of the technical solution of the present application, a mounting frame is fixedly installed on the side wall of the U-shaped tower, a fan is fixedly installed on the top of the mounting frame, and the fan outlet is connected to the U-shaped tower to accelerate the flow of smoke.
[0011] As an optional solution of the technical solution of the present application, the outlet port of the dehumidifier is connected to a chimney via a conduit to discharge the flue gas.
[0012] As an optional solution to the technical solution of the present application, a dust prevention block is fixedly installed on the top side of the U-shaped tower. The top of the dust prevention block is arc-shaped, and the two sides of the dust prevention block correspond to the first collecting box and the second collecting box respectively, which can prevent dust from concentrating on the inner wall of the U-shaped tower.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] 1. The technical solution of the present application can fully absorb the introduced flue gas and precipitate the sulfur dioxide and hydrogen fluoride pollutants in the flue gas into the first collecting box through the calcium carbonate slurry spray component installed on one side of the U-shaped tower. At the same time, the purified high-temperature flue gas will be introduced into the other side along the U-shaped tower. Low-temperature water is driven at the spray point of the dust reduction spray component, which can not only cool the purified flue gas, but also precipitate the dust contained in the flue gas and introduce it into the second collecting box, effectively separating the slurry from the low-temperature water, avoiding a large amount of low-temperature water from mixing into the calcium carbonate slurry in the first collecting box, which increases the difficulty of sulfide treatment.
[0015] 2. The technical solution of the present application is that a filter is installed at one end of the smoke exhaust pipe, and a dehumidifier is installed at the other end of the smoke exhaust pipe. When the purified flue gas is introduced into the chimney, the dehumidifier and filter installed on both sides of the smoke exhaust pipe can effectively filter the moisture contained in the purified flue gas to ensure that the exhausted flue gas is dry and pollution-free. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of a flue gas desulfurization device using limestone powder according to the utility model;
[0018] Figure 2 The utility model is a schematic diagram of the structure of a dust-proof block of a flue gas desulfurization device using limestone powder.
[0019] In the figure: 1. U-shaped tower; 11. Calcium carbonate slurry spray assembly; 12. Dust reduction spray assembly; 2. First collecting box; 21. Second collecting box; 22. Smoke exhaust pipe; 23. Dehumidifier; 24. Filter; 3. Mounting frame; 31. Fan; 32. Chimney; 33. Anti-dust block. DETAILED DESCRIPTION
[0020] See also Figure 1-2 , the utility model provides a technical solution: a flue gas desulfurization device using limestone powder, comprising a U-shaped tower 1, the U-shaped tower 1 is a U-shaped connected tower, and a separation mechanism is installed on the U-shaped tower 1;
[0021] The separation mechanism includes a calcium carbonate slurry spray assembly 11 fixedly installed on one side of the U-shaped tower 1, a dust reduction spray assembly 12 fixedly installed on the other side of the U-shaped tower 1, a first collecting box 2 connected and installed on one side of the bottom of the U-shaped tower 1, a second collecting box 21 connected and installed on the other side of the bottom of the U-shaped tower 1, and a smoke exhaust pipe 22 connected and installed on the bottom of one side of the U-shaped tower 1. The calcium carbonate slurry spray assembly 11 corresponds to the first collecting box 2, and the dust reduction spray assembly 12 corresponds to the second collecting box 21. The calcium carbonate slurry spray assembly 11 and the dust reduction spray assembly 12 are both installed with multiple groups of equidistantly distributed spray heads. The calcium carbonate slurry spray assembly 11 is connected and installed with limestone powder slurry, and the dust reduction spray assembly 12 is connected and installed with a low-temperature dust reduction water source.
[0022] In this technical solution, the calcium carbonate slurry spraying assembly 11 installed on one side of the U-shaped tower 1 can fully absorb the introduced flue gas and precipitate the sulfur dioxide and hydrogen fluoride pollutants in the flue gas into the first collecting box 2. At the same time, the purified high-temperature flue gas will be introduced into the other side along the U-shaped tower 1. The low-temperature water at the spraying point of the driving dust reduction spraying assembly 12 can not only cool the purified flue gas, but also precipitate the dust contained in the flue gas and introduce it into the second collecting box 21, effectively separating the slurry from the low-temperature water, avoiding a large amount of low-temperature water from mixing into the calcium carbonate slurry in the first collecting box 2, which increases the difficulty of sulfide treatment.
[0023] In some technical solutions, one end of the smoke exhaust pipe 22 is connected to a filter 24, and the other end of the smoke exhaust pipe 22 is connected to a dehumidifier 23 for removing moisture from the flue gas. The outlet of the dehumidifier 23 is connected to a chimney 32 through a conduit to discharge the flue gas.
[0024] In this technical solution, after the purified flue gas is introduced into the chimney 32, the dehumidifier 23 and the filter 24 installed on both sides of the exhaust pipe 22 are used to effectively filter the moisture contained in the purified flue gas, ensuring that the exhausted flue gas is dry and pollution-free.
[0025] In some technical solutions, a dust prevention block 33 is fixedly installed on the top side of the U-shaped tower 1. The top of the dust prevention block 33 is arc-shaped, and the two sides of the dust prevention block 33 correspond to the first collecting box 2 and the second collecting box 21 respectively, which can prevent dust from concentrating on the inner wall of the U-shaped tower 1.
[0026] In this technical solution, after the purified flue gas is introduced into the U-shaped tower 1 , the anti-dust block 33 installed on the top side of the U-shaped tower 1 can prevent a large amount of dust from being collected inside the U-shaped tower 1 .
[0027] In some technical solutions, a mounting frame 3 is fixedly installed on the side wall of the U-shaped tower 1, a fan 31 is fixedly installed on the top of the mounting frame 3, and an outlet of the fan 31 is connected to the U-shaped tower 1 to accelerate the flow of smoke.
[0028] In this technical solution, the fan 31 installed on the mounting frame 3 can accelerate the introduction of smoke into the interior of the U-shaped tower 1 and allow the smoke to flow rapidly inside the U-shaped tower 1 .
[0029] When a flue gas desulfurization device using limestone powder is used, it should be noted that the utility model is a flue gas desulfurization device using limestone powder, and each component is a universal standard part or a component known to technical personnel in this field, and its structure and principle can be known to technical personnel through technical manuals or through conventional experimental methods.
[0030] When in use, a large amount of flue gas is first introduced into the U-shaped tower 1 through the fan 31 installed on the side wall of the U-shaped tower 1, and the calcium carbonate slurry spray component 11 installed on one side of the U-shaped tower 1 can fully absorb the introduced flue gas and precipitate the sulfur dioxide and hydrogen fluoride pollutants in the flue gas into the first collection box 2. At the same time, the purified high-temperature flue gas will be introduced to the other side along the U-shaped tower 1, and low-temperature water will be sprayed at the driving dust reduction spray component 12, which can not only cool the purified flue gas, but also precipitate the dust contained in the flue gas into the first collection box 2. The second collecting box 21 effectively separates the slurry from the low-temperature water, thereby preventing a large amount of low-temperature water from mixing into the calcium carbonate slurry in the first collecting box 2, which increases the difficulty of sulfide treatment. At the same time, a filter screen 24 is installed at one end of the smoke exhaust pipe 22, and a dehumidifier 23 is installed at the other end of the smoke exhaust pipe 22. When the purified flue gas is introduced into the chimney 32, the dehumidifier 23 and the filter screen 24 installed on both sides of the smoke exhaust pipe 22 are used to effectively filter the moisture contained in the purified flue gas, thereby ensuring that the discharged flue gas is dry and pollution-free.
Claims
1. A flue gas desulfurization device using limestone powder, comprising a U-shaped tower (1), characterized in that: The U-shaped tower (1) is a U-shaped interconnected tower, and a separation mechanism is installed on the U-shaped tower (1); The separation mechanism comprises a calcium carbonate slurry spraying assembly (11) fixedly installed on one side of the interior of the U-shaped tower (1), a dust reduction spraying assembly (12) fixedly installed on the other side of the interior of the U-shaped tower (1), a first collection box (2) installed in communication with one side of the bottom of the U-shaped tower (1), a second collection box (21) installed in communication with the other side of the bottom of the U-shaped tower (1), and a smoke exhaust pipe (22) installed in communication with the bottom of one side of the U-shaped tower (1), the calcium carbonate slurry spraying assembly (11) and the first collection box (2) correspond to each other, and the dust reduction spraying assembly (12) and the second collection box (21) correspond to each other.
2. A flue gas desulfurization device using limestone powder according to claim 1, characterized in that: The calcium carbonate slurry spray assembly (11) and the dust reduction spray assembly (12) are both installed with a plurality of groups of spray heads that are equidistantly distributed. The calcium carbonate slurry spray assembly (11) is installed in communication with limestone powder slurry, and the dust reduction spray assembly (12) is installed in communication with a low-temperature dust reduction water source.
3. A flue gas desulfurization device using limestone powder according to claim 1, characterized in that: One end of the smoke exhaust pipe (22) is connected to a filter screen (24) installed thereon, and the other end of the smoke exhaust pipe (22) is connected to a dehumidifier (23) installed thereon.
4. A flue gas desulfurization equipment using limestone powder according to claim 1, characterized in that: A mounting frame (3) is fixedly mounted on the side wall of the U-shaped tower (1), a fan (31) is fixedly mounted on the top of the mounting frame (3), and an outlet port of the fan (31) is connected to the U-shaped tower (1).
5. A flue gas desulfurization device using limestone powder according to claim 3, characterized in that: The outlet port of the dehumidifier (23) is connected to a chimney (32) via a conduit.
6. A flue gas desulfurization equipment using limestone powder according to claim 1, characterized in that: An anti-dust block (33) is fixedly installed on the top side of the U-shaped tower (1), the top of the anti-dust block (33) is arc-shaped, and the two sides of the anti-dust block (33) correspond to the first collection box (2) and the second collection box (21) respectively.