Blast furnace stokehole dust removal pipeline convenient to clean

Abstract

The utility model relates to the technical field of blast furnace dust removal equipment, and discloses a blast furnace stokehole dust removal pipeline convenient to clean, which comprises a blast furnace tower, a dust discharge pipeline communicated with the top of the blast furnace tower, and a dust removal tower communicated with the other end of the dust discharge pipeline, a dust removal mechanism is mounted in the dust removal tower, a collection hopper is mounted at the bottom of the dust removal tower, a flue is mounted on one side of the top of the dust removal tower, the flue is communicated with the dust removal tower, a dust collection box is mounted at the other end of the flue, and the flue is communicated with the dust collection box; according to the utility model, when dust is collected at one place, dust particles are enlarged and wetted by adding water, and the dust is easy to clean after redundant water is filtered out through drainage; and meanwhile, secondary pollution to the environment is avoided, when wet dust is recycled by workers, the dust is not prone to being attached to the inner wall of equipment or a pipeline, and therefore cleaning work becomes simpler and more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace dust removal equipment, in particular to a blast furnace front dust removal pipeline which is easy to clean. Background Art

[0002] A large amount of dust is generated during the blast furnace ironmaking process. Specifically, during the blast furnace ironmaking process, coke and iron ore undergo a high-temperature reduction reaction to produce a large amount of coal gas. These coal gases contain a large amount of fine dust particles. These particles mainly come from impurities in the raw materials, incomplete combustion of the charge, and erosion of the furnace lining. These dusts will not only pollute the environment, but also harm human health, so effective dust removal measures are needed.

[0003] In the blast furnace ironmaking process, adding water can achieve a certain dust removal effect, which is mainly achieved through wet dust removal. The water mist collides and condenses with the dust particles in the coal gas, making the dust particles larger and becoming moist. In addition, water can also lower the temperature in the coal gas and reduce the content of harmful gases in the coal gas, thereby further improving the environmental quality. When necessary, the method of adding water for dust removal can be combined to improve the dust removal effect and protect environmental safety, so as to avoid secondary pollution to the environment.

[0004] Adding water to remove dust not only helps to capture dust particles during the blast furnace ironmaking process, but also makes cleaning work more convenient. When water comes into contact with dust particles in the coal gas, the dust particles become moist and are more likely to stick together to form larger particles. This moist dust is not only easier to be captured by dust removal equipment, but also less likely to fly during the subsequent cleaning process, reducing the risk of secondary pollution. Moist dust is not easy to adhere to the inner wall of the equipment or the pipeline, which makes cleaning work simpler and more efficient. Adding water to remove dust will also cause dust particles to aggregate into larger clumps, which are easier to collect and handle, reducing manual operations and time costs during the cleaning process. It can be seen that adding water to remove dust can effectively reduce the dust concentration in the air, thereby improving the working environment of workers, which is of great significance for protecting workers' health, improving work efficiency and reducing the occurrence of occupational diseases.

[0005] The patent with the current publication number CN203411558U discloses a blast furnace gas dust collector, including a cylinder, a filter bag is arranged inside the cylinder, a clean gas chamber is arranged on the upper part of the grating plate on the top of the cylinder, a clean gas outlet is arranged on the top of the clean gas chamber, pulse backblowing devices are arranged on both sides of the clean gas chamber, a raw gas chamber is arranged on the lower part of the grating plate at the bottom of the cylinder, an inverted conical temporary storage ash hopper is arranged at the bottom of the raw gas chamber, a gas equalizing and rectifying device is arranged between the temporary storage ash hopper and the raw gas chamber, a raw gas inlet is arranged on one side of the top of the temporary storage ash hopper, a guide device is arranged on the raw gas inlet, and an ash discharge port is arranged at the bottom of the temporary storage ash hopper; although the above device solves the problem of reducing the total construction cost of the dust collector project.

[0006] However, the above technical solution still has the following problems: the dust removal method is the filter bag type dust removal, and the large amount of fine dust particles contained in the gas still have the characteristics of being light and small even after being filtered by the filter bag. When workers handle the dust after dust collection, the dust is easily blown up, which is difficult to collect and causes secondary environmental pollution. In addition, the filter bag type dust removal requires frequent replacement of the filter bag to prevent excessive dust, which increases the dust removal time of the workers and is easy to cause damage to the body and the environment. Utility Model Content

[0007] In view of the deficiencies of the prior art, the utility model provides a blast furnace front dust removal duct which is easy to clean, so as to solve at least one of the problems raised by the background technology, such as making dust easy to collect and process.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blast furnace front dust removal pipeline that is easy to clean, comprising a blast furnace tower, a dust exhaust pipeline connected to the top of the blast furnace tower, and a dust removal tower connected to the other end of the dust exhaust pipeline, the dust exhaust pipeline and the dust removal tower are connected. The port at one end is connected and passes through the dust removal tower, the port is close to the bottom of the dust removal tower and is perpendicular to the ground, a dust removal mechanism is installed inside the dust removal tower, a collecting bucket is installed at the bottom of the dust removal tower, a flue is installed on one side of the top of the dust removal tower, the flue is connected to the dust removal tower, a dust collecting box is installed at the other end of the flue, and the flue and the dust collecting box are connected.

[0009] Furthermore, the dust removal mechanism includes a conical bucket and an annular pipe, the inner wall of the dust removal tower is fixedly connected with the annular pipe, and the inner wall of the dust removal tower is fixedly connected with the conical bucket.

[0010] Furthermore, the annular pipe is located below the dust exhaust pipe, and the conical bucket is located below the annular pipe.

[0011] Furthermore, a water spray port is installed on the inner wall of the annular pipe, a water inlet pipe is installed on the outer side of the annular pipe, the other end of the water inlet pipe passes through the dust removal tower and is connected to an external water pipe, and the annular pipe, the water spray port and the water inlet pipe are connected.

[0012] Furthermore, a water storage tank is provided at one end of the collecting bucket, a filter screen is fixedly connected to the inner wall of the water storage tank, an accumulation tank is fixedly connected to one end of the water storage tank, a drainage pipe is installed on one side of the collecting bucket, and the drainage pipe is connected to the water storage tank.

[0013] Furthermore, an exhaust grille is fixedly connected to one side of the dust box.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model collects dust in one place and wets it with water, so that the dust particles are enlarged and become moistened. After the excess water is filtered out through drainage, the dust is easy to be cleaned. At the same time, secondary pollution to the environment is avoided. When workers recycle the moist dust, it is not easy for the dust to adhere to the inner wall of the equipment or the pipe, which makes the cleaning work simpler and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a side cross-sectional schematic diagram of the dust removal tower of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the annular pipeline of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the dust removal tower of the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the collecting bucket of the utility model.

[0021] In the figure: 1. blast furnace tower; 2. dust removal tower; 3. flue; 4. dust exhaust pipe; 5. collecting bucket; 501. filter screen; 502. drainage pipe; 503. stacking trough; 504. water storage tank; 6. conical bucket; 7. annular pipe; 701. water nozzle; 702. water inlet pipe; 8. dust collecting box; 801. exhaust grille. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] like Figures 1 to 5 As shown, a blast furnace front dust removal pipeline that is easy to clean includes a blast furnace tower 1, a dust exhaust pipeline 4 connected to the top of the blast furnace tower 1, and a dust removal tower 2 connected to the other end of the dust exhaust pipeline 4, the dust exhaust pipeline 4 is connected to the dust removal tower 2, and one end port is passed through the dust removal tower 2, the port is close to the bottom of the dust removal tower 2 and is perpendicular to the ground, a dust removal mechanism is installed inside the dust removal tower 2, a collecting bucket 5 is installed at the bottom of the dust removal tower 2, a flue 3 is installed on one side of the top of the dust removal tower 2, the flue 3 is connected to the dust removal tower 2, a dust collecting box 8 is installed at the other end of the flue 3, and the flue 3 is connected to the dust collection box 8.

[0024] like Figure 1As shown, the utility model has a blast furnace front dust removal pipeline that is easy to clean and is similar to the existing blast furnace gas dust collector structure, such as the blast furnace gas dust collector disclosed in the patent publication number CN203411558U. The main improvement of the utility model is to reduce the harm of dust to the environment and human body. Figures 1 to 5 As shown, when the utility model is used, a blast furnace front dust removal pipeline that is easy to clean, when the blast furnace tower 1 is in high-temperature operation, a large amount of coal gas and dust generated in the furnace are driven by the fan in the blast furnace tower 1 to be transmitted from the dust exhaust pipeline 4 into the dust removal tower 2. The dust exhaust pipeline 4 is vertical to the ground and deep in the dust removal tower 2, which helps the dust to fall into the dust removal mechanism quickly to prevent dust from flying, and the coal gas and part of the dust are affected by the air pressure in the dust removal tower 2 and are discharged from the flue 3 at the top of the dust removal tower 2 to the dust collecting box 8. The flue 3 is opened at the top of the dust removal tower 2 to further prevent dust from flying. The dust is filtered from the dust collection box 8 and discharged to the outside. The particles mixed with dust and water are discharged into the collecting bucket 5 through the dust discharge mechanism, and the excess water is discharged to the outside. The remaining wet particles are accumulated in the collecting bucket 5, and the workers can directly recycle them.

[0025] like Figure 2 As shown, the dust removal mechanism includes a conical bucket 6 and an annular pipe 7, the inner wall of the dust removal tower 2 is fixedly connected with the annular pipe 7, and the inner wall of the dust removal tower 2 is fixedly connected with the conical bucket 6.

[0026] Specifically, through this arrangement, dust enters the dust removal tower 2 and falls into the conical bucket 6. The water and dust discharged from the annular pipe 7 are mixed in the conical bucket 6. After the dust particles become wet, they are discharged from the bottom of the conical bucket 6 into the collecting bucket 5.

[0027] like Figure 2 As shown, the annular pipe 7 is located below the dust exhaust pipe 4, and the conical bucket 6 is located below the annular pipe.

[0028] Specifically, through this arrangement, dust and water flow to the bottom of the conical bucket 6, which can prevent dust-moistened particles from clogging the bottom of the conical bucket 6. Water and dust always maintain fluidity, reducing blockage, reducing workers' maintenance work in the dust removal tower 2, and improving work efficiency.

[0029] like Figure 3 to Figure 4 As shown, a water spray port 701 is installed on the inner wall of the annular pipe 7, and a water inlet pipe 702 is installed on the outer side of the annular pipe 7. The other end of the water inlet pipe 702 passes through the dust removal tower 2 and is connected to an external water pipe. The annular pipe 7, the water spray port 701 and the water inlet pipe 702 are connected.

[0030] Specifically, by setting the water spray outlet 701, water is discharged in a high-pressure manner. Multiple water spray outlets 701 can form a water curtain and mix with the dust falling into the conical bucket 6. The mixed particles can quickly enter the bottom of the conical bucket 6, reducing the dust suspended in the air and improving the dust removal efficiency.

[0031] like Figures 4 to 5 As shown, a water storage tank 504 is opened at one end of the collecting bucket 5, a filter screen 501 is fixedly connected to the inner wall of the water storage tank 504, an accumulation tank 503 is fixedly connected to one end of the water storage tank 504, and a drainage pipe 502 is installed on one side of the collecting bucket 5, and the drainage pipe 502 and the water storage tank 504 are connected.

[0032] Specifically, through this arrangement, the mixed particles fall into the surface of the filter mesh 501 on the top of the water storage tank 504, excess water flows into the water storage tank 504, and the accumulated particles gradually enter the accumulation tank 503. Workers directly recycle the particles in the accumulation tank 503, and the filtered wastewater is discharged to the outside from the drainage pipe 502.

[0033] like Figure 1 to Figure 2 As shown, an exhaust grille 801 is fixedly connected to one side of the dust box 8.

[0034] Specifically, through this arrangement, a part of the dust and gas enters the dust box 8, and a part of the dust is blocked by the exhaust grille 801, and the filtered gas is discharged to the outside from the exhaust grille 801 and then recycled.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blast furnace dust removal pipeline that is easy to clean, comprising a blast furnace tower (1), a dust removal pipeline (4) connected to the top of the blast furnace tower (1), and a dust removal tower (2) connected to the other end of the dust removal pipeline (4), characterized in that: The dust removal pipe (4) is connected to the dust removal tower (2), and one end of the port is passed through the dust removal tower (2), the port is close to the bottom of the dust removal tower (2) and is perpendicular to the ground. A dust removal mechanism is installed inside the dust removal tower (2), a collecting bucket (5) is installed at the bottom of the dust removal tower (2), a flue (3) is installed on one side of the top of the dust removal tower (2), the flue (3) is connected to the dust removal tower (2), and a dust collecting box (8) is installed at the other end of the flue (3), and the flue (3) and the dust collecting box (8) are connected.

2. The blast furnace dust removal pipeline that is easy to clean according to claim 1 is characterized in that: The dust removal mechanism comprises a conical bucket (6) and an annular pipe (7); the inner wall of the dust removal tower (2) is fixedly connected to the annular pipe (7); and the inner wall of the dust removal tower (2) is fixedly connected to the conical bucket (6).

3. The blast furnace dust removal pipeline that is easy to clean according to claim 2 is characterized in that: The annular pipe (7) is located below the dust exhaust pipe (4), and the conical bucket (6) is located below the annular pipe (7).

4. A blast furnace dust removal pipeline that is easy to clean according to claim 2 or 3, characterized in that: The inner wall of the annular pipe (7) is provided with a water spray port (701), the outer side of the annular pipe (7) is provided with a water inlet pipe (702), the other end of the water inlet pipe (702) is passed through a dust removal tower (2) and is connected to an external water pipe, and the annular pipe (7), the water spray port (701) and the water inlet pipe (702) are connected.

5. A blast furnace dust removal pipeline that is easy to clean according to claim 1, 2 or 3, characterized in that: A water storage tank (504) is provided at one end of the collecting bucket (5), a filter screen (501) is fixedly connected to the inner wall of the water storage tank (504), an accumulation tank (503) is fixedly connected to one end of the water storage tank (504), a drainage pipe (502) is installed on one side of the collecting bucket (5), and the drainage pipe (502) and the water storage tank (504) are connected.

6. The blast furnace dust removal pipeline that is easy to clean according to claim 4 is characterized in that: A water storage tank (504) is provided at one end of the collecting bucket (5), a filter screen (501) is fixedly connected to the inner wall of the water storage tank (504), an accumulation tank (503) is fixedly connected to one end of the water storage tank (504), a drainage pipe (502) is installed on one side of the collecting bucket (5), and the drainage pipe (502) and the water storage tank (504) are connected.

7. A blast furnace dust removal pipeline that is easy to clean according to claim 1, 2, 3 or 6, characterized in that: An exhaust grille (801) is fixedly connected to one side of the dust collecting box (8).

8. The blast furnace dust removal pipeline that is easy to clean according to claim 4 is characterized in that: An exhaust grille (801) is fixedly connected to one side of the dust collecting box (8).

9. The easy-to-clean blast furnace dust removal pipeline according to claim 5, characterized in that: An exhaust grille (801) is fixedly connected to one side of the dust collecting box (8).

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