Spraying dust removal equipment for secondary flue gas of converter

Abstract

The utility model relates to the technical field of flue gas purification, in particular to spray dust removal equipment for secondary flue gas of a converter. The utility model provides a converter secondary flue gas spray dedusting equipment, including bracing frame, processing frame, placing frame no. 1, filter screen no. 1, intake pipe, water inlet pipe and annular nozzle etc. The middle of bracing frame upper part is provided with processing frame, placing frame no. 1 is installed in processing frame lower part, placing frame no. 1 is evenly spaced with filter screen no. The rear side of the lower part of the treatment frame is communicated with an air inlet pipe, an annular nozzle is embedded in the upper part in the treatment frame, the outer end of the annular nozzle is communicated with a water inlet pipe, and the front side of the treatment frame is provided with a maintenance assembly. By adopting the design of a filter screen treatment mode, the filter screen does not need to be replaced frequently, the use cost of the filter screen is reduced, meanwhile, the downtime of equipment caused by frequent replacement of the filter screen is also reduced, the overall operation efficiency of the equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification technology, and in particular to a converter secondary flue gas spray dust removal device. Background Technology

[0002] In the steel manufacturing industry, converter steelmaking, as one of the key production processes, while achieving efficient steel production, also brings a series of environmental and health problems. During converter steelmaking, high-temperature molten metal undergoes a violent chemical reaction with blown-in oxygen, generating a large amount of high-temperature flue gas. This flue gas has a complex composition, containing not only high concentrations of particulate matter, such as iron oxides and limestone dust, but also various harmful gases, such as carbon monoxide (CO), sulfur dioxide (SO2), and nitrogen oxides (NOx). If these pollutants are directly released into the atmosphere without effective treatment, they will cause serious pollution to the surrounding environment, including decreased air quality, acid rain formation, and exacerbation of the greenhouse effect. At the same time, workers who are exposed to such polluted environments for a long time face serious threats to the health of their respiratory and cardiovascular systems.

[0003] Currently, although various dust removal technologies, such as bag filters and electrostatic precipitators, are employed for treating converter flue gas, these traditional methods have certain limitations when dealing with secondary converter flue gas containing high humidity, high viscosity, and fine particulate matter. For example, bag filters are prone to filter bag clogging and blockage when handling high-temperature, high-humidity flue gas, leading to decreased dust removal efficiency and frequent filter bag replacement, resulting in high maintenance costs. Electrostatic precipitators, on the other hand, have limited collection efficiency for fine particulate matter (especially particles smaller than 1μm), making it difficult to meet increasingly stringent environmental emission standards.

[0004] Therefore, it is necessary to design a secondary flue gas spray dust removal device for converters. Utility Model Content

[0005] To overcome the drawbacks of traditional methods that require frequent filter bag replacements, this invention provides a converter secondary flue gas spray dust removal device.

[0006] A converter secondary flue gas spray dust removal device includes a support frame, a treatment frame, a placement frame, a filter screen, an air inlet pipe, a water inlet pipe, and an annular nozzle. The treatment frame is located in the middle of the upper part of the support frame. The placement frame is installed in the lower part of the treatment frame. The filter screen is evenly spaced inside the placement frame. The air inlet pipe is connected to the lower rear side of the treatment frame. The annular nozzle is embedded in the upper part of the treatment frame. The outer end of the annular nozzle is connected to the water inlet pipe. A maintenance component is located on the front side of the treatment frame.

[0007] Optionally, the maintenance components include a protective door and a locking device, with an opening on the front side of the processing frame, a protective door rotatably located on the front side of the processing frame, and a locking device located on the front side of the processing frame.

[0008] Optionally, it also includes filter cotton, which is placed in the upper part of the processing frame.

[0009] Optionally, it also includes a wastewater collection frame, a second placement frame, and a second filter screen. The wastewater collection frame is provided on the inner side of the lower part of the support frame, and the second placement frame is placed inside the wastewater treatment frame. The second placement frame is provided with three layers of second filter screens evenly spaced inside.

[0010] Optionally, the bottom of the support frame is equipped with an anti-slip pad.

[0011] Optionally, the filter screen adopts a three-layer structure design.

[0012] The beneficial effects and significant advancements of this utility model are as follows:

[0013] This utility model adopts a filter treatment design that eliminates the need for frequent filter replacement, reducing the cost of filter use and minimizing equipment downtime caused by frequent filter replacement, thereby improving the overall operating efficiency and service life of the equipment. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the processing frame, the placement frame, and the air intake pipe.

[0016] Figure 3 This is a three-dimensional structural diagram of the placement frame and the filter screen of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the processing frame, water inlet pipe, and annular nozzle of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the protective door, locking component, and filter cotton of this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the second placement frame and the second filter screen of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1_Support frame, 2_Processing frame, 3_Placement frame one, 4_Filter screen one, 5_Air inlet pipe, 6_Water inlet pipe, 7_Annular nozzle, 8_Protective door, 9_Locking parts, 10_Filter cotton, 11_Wastewater collection frame, 12_Placement frame two, 13_Filter screen two. Detailed Implementation

[0021] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0022] Example: A converter secondary flue gas spray dust removal device, such as Figures 1-6 As shown, the system includes a support frame 1, a processing frame 2, a first placement frame 3, a first filter screen 4, an air inlet pipe 5, a water inlet pipe 6, a ring-shaped nozzle 7, a protective door 8, a locking device 9, filter cotton 10, a wastewater collection frame 11, a second placement frame 12, and a second filter screen 13. The support frame 1 serves as the foundation for the entire converter secondary flue gas spray dust removal equipment. The bottom of the support frame 1 is equipped with an anti-slip pad to increase the friction between the ground and the support frame 1, thus preventing slippage. The upper middle part of the support frame 1 is connected to the processing frame 2, which is the core container for flue gas treatment, providing a closed treatment environment for the flue gas, spray, and various filter components. Within the processing frame 2, a placement frame 3 is installed at the lower part. Three layers of filter screens 4 are evenly spaced inside the placement frame 3. The filter screens 4 employ a three-layer structure design for better filtration, sequentially intercepting larger dust and impurities in the flue gas. The placement frame 3 provides a stable installation position for the filter screens 4. An air inlet pipe 5 is connected to the lower rear side of the processing frame 2, serving as the channel for the secondary flue gas from the converter to enter the processing frame 2. An annular nozzle 7 is embedded in the upper part of the processing frame 2, with a water inlet pipe 6 connected to its outer end. The water inlet pipe 6 dissipates external cleaning fluid. Water is delivered to the annular nozzle 7 to ensure the normal operation of the spray system and provide the necessary spray medium for flue gas treatment. An opening is provided on the front side of the treatment frame 2, and a protective door 8 is rotatably connected to the front side of the treatment frame 2. The protective door 8 is used to cover the opening and protect the placement frame 3. When replacing the filter screen 4, opening the protective door 8 allows personnel to easily enter the treatment frame 2 for operation. A locking component 9 is connected to the front side of the treatment frame 2. The locking component 9 consists of a lever and a spring. The lever is slidably connected to the front side of the treatment frame 2 and engages with the protective door 8. The spring is connected to the end of the lever. A filter cotton 10 is placed in the upper part of the treatment frame 2. The filter cotton 10 has a finer filtration performance and can further intercept fine particles and some water mist remaining in the flue gas. A wastewater collection frame 11 is connected to the lower inner side of the support frame 1. The wastewater collection frame 11 is located at the bottom of the treatment frame 2, and the wastewater treatment frame 2 is connected to the bottom of the treatment frame 2. A placement frame 2 12 is placed inside the wastewater treatment frame 2. Three layers of filter screens 2 13 are evenly spaced inside the placement frame 2. The wastewater collection frame 11 is used to collect wastewater and prevent wastewater from flowing randomly. The filter screens 2 13 are used to filter solid impurities and particles in the wastewater.

[0023] When this device is needed, first connect the water inlet pipe 6 to an external clean water source to ensure a normal water supply and provide sufficient water for the spray system. Next, connect the air inlet pipe 5 to the converter secondary flue gas emission pipe to ensure that the flue gas can smoothly enter the treatment frame 2.

[0024] Then, open the external water supply valve to deliver clean water through the inlet pipe 6 to the annular nozzle 7, and start the spray system to ensure that the water mist is evenly sprayed inside the treatment frame 2. Afterward, start the converter, and the secondary flue gas enters the treatment frame 2 through the inlet pipe 5. The flue gas first passes through the filter screen 4 inside the placement frame 3. The filter screen 4 initially intercepts larger dust particles and impurities in the flue gas, reducing the particulate matter content. The water mist formed by the spray comes into full contact with the flue gas, combining with the particulate matter in the flue gas, causing the particles to become heavier and fall, while some of the water mist is carried upward by the flue gas.

[0025] After being filtered by filter screen 4 and treated by spray, the flue gas continues to rise and passes through the filter cotton 10 in the upper part of the treatment frame 2. The filter cotton 10 further intercepts the fine particulate matter and some water mist remaining in the flue gas, improving the purification effect of the flue gas.

[0026] During the flue gas treatment process, the water mist generated by the spray combines with the particulate matter in the flue gas, and some of the wastewater falls to the bottom of the treatment frame 2. The wastewater collection frame 11 collects this wastewater to prevent it from flowing freely. The wastewater collected by the wastewater collection frame 11 passes through the filter screen 13 placed in the frame 2. The filter screen 13 filters out solid impurities and particulate matter in the wastewater, removing most of the impurities and thus achieving preliminary purification of the wastewater.

[0027] When a large amount of dust and impurities accumulate on filter screen 4, affecting the filtration effect, open the protective door 8, remove the placement frame 3 from the processing frame 2, replace it with a new filter screen 4, then reinstall the placement frame 3 back into the processing frame 2, close the protective door 8, and lock it with the locking piece 9. This allows for convenient replacement of filter screen 4, and using a filter to treat flue gas is more convenient than traditional methods, eliminating the need for frequent filter replacements.

[0028] When the converter operation is complete and flue gas emissions need to be stopped, shut down the converter first. After the flue gas in treatment frame 2 has been basically treated, close the external water supply valve and stop the spray system.

[0029] By following the above steps, the normal operation of the converter secondary flue gas spray dust removal equipment can be ensured, effectively removing dust and impurities from the converter secondary flue gas, and realizing the purification treatment of flue gas and the preliminary purification and recycling of wastewater.

[0030] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A converter secondary fume spray dedusting device, characterized in that: The utility model relates to a waste water treatment device, including support frame (1), processing frame (2), place frame one (3), filter screen one (4), air inlet pipe (5), water inlet pipe (6) and annular shower head (7), the middle of support frame (1) upper portion is equipped with processing frame (2), the inside lower portion of processing frame (2) is installed with place frame one (3), place frame one (3) inside is equipped with filter screen one (4) evenly and interval, the rear side of processing frame (2) lower portion is connected with air inlet pipe (5), annular shower head (7) is embeddedly installed in the inside upper portion of processing frame (2), the outer end of annular shower head (7) is connected with water inlet pipe (6), and the front side of processing frame (2) is equipped with maintenance component.

2. A secondary fume spray dedusting device for a converter according to claim 1, characterized in that: Maintenance component includes guard door (8) and locking piece (9), the front side of processing frame (2) is equipped with opening, and the front side of processing frame (2) is rotatably equipped with guard door (8), and the front side of processing frame (2) is equipped with locking piece (9).

3. A secondary fume spray dedusting device for a converter according to claim 2, characterized in that: Still including filter cotton (10), the inside upper portion of processing frame (2) is placed with filter cotton (10).

4. A secondary fume spray dedusting device for a converter according to claim 3, characterized in that: Still including waste water collection frame (11), place frame two (12) and filter screen two (13), the inside lower portion of support frame (1) is equipped with waste water collection frame (11), and the inside of waste water treatment frame (2) is placed with place frame two (12), and place frame two (12) inside is equipped with three layers filter screen two (13) evenly and interval.

5. A secondary fume spray dedusting device for a converter according to claim 1, characterized in that: Support frame (1) bottom is equipped with antiskid pad.

6. A secondary fume spray dedusting device for a converter according to claim 1, characterized in that: Filter screen one (4) adopts three layers structure design.

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