Flue gas dust removal device for rotary kiln

Abstract

The utility model discloses a rotary kiln flue gas dust removal device which comprises a rotary kiln body, a flue gas conveying pipeline is arranged on one side of the rotary kiln body, a primary dust removal structure is arranged at the end, away from the rotary kiln body, of the flue gas conveying pipeline, the primary dust removal structure comprises a settling box, a settling channel is arranged in the settling box, and a secondary dust removal structure is arranged in the settling channel. A connecting pipe is arranged on one side of the settling box, a secondary dust removal structure is arranged at the end, away from the settling box, of the connecting pipe and comprises a dust removal box communicated with one end of the connecting pipe, and a chimney is arranged at the top of the dust removal box. According to the rotary kiln, the cleaning degree of waste gas generated by the rotary kiln can be improved conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal technical field especially is related to a rotary kiln flue gas dust removal device. BACKGROUND

[0002] Soft magnetic ferrite magnetic material must be under the condition of oxygen high temperature and carry out primary solid phase reaction through rotary kiln preburning. After granulating, the powder particle is distributed in a certain range, enters from one end of the rotary kiln, and flows out from the tail of the kiln pipe after calcining. Because the entering and exiting powder particles are broken into powder, dust is generated in the calcining process, which pollutes the production and surrounding environment, and also causes material loss. At present, the traditional technology adopts bag dust collector and electric dust removal equipment to solve the pollution problem in the process and recycle useful materials.

[0003] However, the waste gas of the rotary kiln has the characteristics of moisture and high viscosity, the dust filter bag is quickly blocked by the moisture and high viscosity dust, the back blowing dust removal is invalid, the pressure difference between the two sides of the filter bag is large, the ventilation resistance is obviously increased, the treatment air volume is significantly decreased, the oxygen calcination effect is seriously affected, and the magnetization degree of the preburning powder is high, which cannot meet the process requirements. CONTENT OF THE UTILITY MODEL

[0004] The application provides a rotary kiln flue gas dust removal device, which facilitates to improve the cleaning degree of the waste gas generated by the rotary kiln.

[0005] The application provides a rotary kiln flue gas dust removal device, which adopts the following technical scheme:

[0006] A rotary kiln flue gas dust removal device, comprising a rotary kiln body, a flue gas conveying pipeline is arranged on one side of the rotary kiln body, a first-stage dust removal structure is arranged at the end of the flue gas conveying pipeline away from the rotary kiln body, the first-stage dust removal structure comprises a settling tank, a settling channel is arranged in the settling tank, a connecting pipe is arranged on one side of the settling tank, a second-stage dust removal structure is arranged at the end of the connecting pipe away from the settling tank, the second-stage dust removal structure comprises a dust removal tank connected to one end of the connecting pipe, and a chimney is arranged at the top of the dust removal tank.

[0007] The utility model discloses a rotary kiln flue gas dust removal device, in use, the waste gas produced in the rotary kiln body is transmitted to the primary dust removal structure through the flue gas conveying pipeline, and the primary dust removal structure utilizes the setting down tank to carry out the settlement to the smoke dust in the waste gas, and the gas after settlement enters the connecting pipe through the settlement channel, and then enters the secondary dust removal structure through the connecting pipe, and the secondary dust removal structure includes the dust removal tank arranged at one side of the setting down tank, and the dust removal tank further separates the smoke dust, and the flue gas produced is released through the chimney, therefore, the utility model discloses a rotary kiln flue gas dust removal device, through the primary dust removal structure and the secondary dust removal structure, the cleaning degree of the waste gas produced by the rotary kiln is improved.

[0008] Preferably, the setting down tank is provided with a partition plate, the partition plate divides the setting down tank into multiple layers, the partition plate is provided with a through hole, and the through hole is used for passing flue gas.

[0009] Through the above technical scheme, the partition plate is arranged to facilitate the arrangement of the settlement channel in the setting down tank, and the through hole is arranged to facilitate the passage of flue gas from the through hole.

[0010] Preferably, the two sides of the setting down tank are provided with a plurality of fans, the fans are used to provide wind power to the setting down tank, the fans are provided with a wind volume controller, each layer of the setting down tank is provided with a fan, and the fan is arranged according to the flue gas flow direction.

[0011] Through the above technical scheme, the fan is arranged to facilitate the provision of air flow to the setting down tank, so that the flue gas moves along the settlement channel; and the wind volume controller is arranged to facilitate the control of the flow rate and the wind volume of the fan blowing.

[0012] Preferably, the dust removal tank is provided with a plurality of dust removal plates, one side of the dust removal plate is provided with an anti-sticking coating, and the dust removal plate is arranged in the dust removal tank in an inclined manner.

[0013] Through the above technical scheme, the dust removal plate is arranged to facilitate the adsorption of dust in the flue gas, so as to realize the separation of smoke dust; and the anti-sticking coating is arranged to facilitate the adhesion of sticky substances in the flue gas to the dust removal plate.

[0014] Preferably, the connecting pipe is provided with a heating structure, the heating structure includes a heating wire, and the heating wire is arranged along the inner wall of the connecting pipe.

[0015] Through the above technical scheme, the heating structure is arranged to facilitate the drying of dust and prevent the humid dust from blocking the connecting pipe.

[0016] Preferably, the bottom of the dust removal tank is provided with a dust discharge port, and the dust discharge port is provided with a dust discharge valve.

[0017] By adopting the technical scheme, the dust outlet is arranged, so that the dust in the flue gas can be discharged; and the dust valve is arranged, so that the opening and closing of the dust outlet can be controlled.

[0018] Preferably, the dust sensor is arranged in the dust removal box to detect the dust concentration in the dust removal box.

[0019] By adopting the technical scheme, the dust sensor is arranged, so that the dust concentration in the dust removal box can be detected.

[0020] Preferably, the plurality of support columns are arranged at the bottom of the settling tank and the dust removal box, and the rubber pads are arranged at the bottom of the support columns.

[0021] By adopting the technical scheme, the support columns are arranged to support the settling tank and the dust removal box; and the rubber pads are arranged to prevent the bottom of the support columns from slipping.

[0022] In summary, the present application has the following beneficial effects:

[0023] 1. The device is provided with a settling tank, and the smoke dust in the waste gas is settled through the settling channel formed in the settling tank, so that the dust is settled in the settling tank;

[0024] 2. The device is provided with a dust removal plate in the dust removal box, and the dust in the smoke dust is adsorbed by the dust removal plate; the dust removal plate is arranged in the dust removal box in an inclined manner, so as to increase the contact time and contact area of the flue gas and the dust removal plate, and improve the efficiency of smoke dust separation;

[0025] 3. The device is provided with a heating wire on the connecting pipe between the settling tank and the dust removal box, so as to dry the smoke dust by heating, and prevent the inlet and outlet of the connecting pipe from being blocked by the damp smoke dust. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is a structural schematic view of an embodiment;

[0027] Fig. 2 It is a sectional view showing a primary dust removal structure in an embodiment;

[0028] Fig. 3 It is a sectional view showing a secondary dust removal structure in an embodiment;

[0029] Marked as follows: 1, rotary kiln body; 2, flue gas conveying pipe; 3, primary dust removal structure; 31, settling tank; 32, settling channel; 33, partition plate; 34, through hole; 4, connecting pipe; 5, secondary dust removal structure; 51, dust removal box; 52, dust removal plate; 53, anti-sticking coating; 6, chimney; 7, fan; 8, air volume controller; 9, heating structure; 91, heating wire; 10, dust outlet; 11, dust valve; 12, dust sensor; 13, support column; 14, rubber pad. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "bottom," and "top" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0031] This utility model discloses a rotary kiln flue gas dust removal device, such as Figs. 1 to 3 As shown, the system includes a rotary kiln body 1, a flue gas conveying pipe 2 on one side of the rotary kiln body 1, and a primary dust removal structure 3 at the end of the flue gas conveying pipe 2 away from the rotary kiln body 1. The primary dust removal structure 3 includes a settling box 31, a settling channel 32 inside the settling box 31, and a partition 33 inside the settling box 31. The partition 33 divides the settling box 31 into multiple layers. The multi-layer structure allows the flue gas to settle in multiple layers inside the settling box 31. The partition 33 is provided with through holes 34 for the flue gas to pass through. Large dust particles gradually settle under the action of gravity and inertia. Multiple fans 7 are installed on both sides of the settling box 31. The fans 7 provide airflow to the settling box 31. Each fan 7 is equipped with an airflow controller 8, which controls the airflow entering the settling box 31, thereby controlling the flow rate of the dust. Each layer of the settling box 31 is equipped with a fan 7, which is set according to the direction of dust flow. The fans 7 blow the dust along the settling channel 32, further improving the dust settling rate. A connecting pipe 4 is installed on one side of the settling box 31. A heating structure 9 is installed on the connecting pipe 4. The heating structure 9 includes a heating wire 91, which is arranged along the inner wall of the connecting pipe 4.

[0032] A secondary dust removal structure 5 is installed at the end of the connecting pipe 4 away from the settling box 31. The secondary dust removal structure 5 includes a dust collection box 51 connected to one end of the connecting pipe 4. Multiple dust collection plates 52 are installed inside the dust collection box 51. One side of each dust collection plate 52 is coated with an anti-stick coating 53. The dust collection plates 52 are made of metal to improve their strength and wear resistance. Meanwhile, the anti-stick coating 53 is made of high-temperature resistant material to adapt to the high-temperature environment of the rotary kiln flue gas. The anti-stick coating 53 effectively prevents sticky substances in the flue gas from adhering to the dust collection plates 52, ensuring that the dust collection plates 52 remain constantly... To maintain cleanliness and ensure efficient dust removal, the dust removal plate 52 is inclined and installed inside the dust removal box 51, which increases the contact time and area between the dust removal plate 52 and the dust, thus treating the dust more effectively. A dust sensor 12 is installed inside the dust removal box 51 to detect the dust concentration inside the dust removal box 51. A dust discharge port 10 is installed at the bottom of the dust removal box 51, and a dust discharge valve 11 is installed on the dust discharge port 10. The dust discharge valve 11 can control the opening and closing of the dust discharge port 10 and control the dust treatment time at any time. A chimney 6 is installed at the top of the dust removal box 51.

[0033] The bottom of the settling tank 31 and the dust removal tank 51 is provided with a plurality of support columns 13 which are uniformly distributed on the bottom of the support seat, and the bottom of the support column 13 is provided with a rubber pad 14 which can prevent the bottom of the support column 13 from slipping.

[0034] Working principle: the utility model discloses a rotary kiln flue gas dust removal device mainly through setting up primary dust removal structure 3 and secondary dust removal structure 5, the waste gas produced in rotary kiln body 1 is cleaned, a dust removal structure includes the settling tank 31 set up, the settling tank 31 is divided into multilayer by the partition 33, then forms the settlement channel 32 through the through -hole 34 set up, and the settling tank 31 is mainly utilize the gravity of smoke dust, and the dust is settled, and the design of multilayer structure makes the flue gas when passing through each settlement chamber can experience settlement process, thereby greatly improve the overall dust removal efficiency, and the dust after settlement will pass through the connecting pipe 4 and enter dust removal tank 51, and the dust removal tank 51 is provided with a plurality of inclined dust removal plates 52, since the dust removal plate 52 is inclinedly arranged, the flue gas will be fully contacted with the dust removal plate 52 in the rising process, and the dust particles in the flue gas are contacted with the dust removal plate 52, and are adsorbed on the surface of the dust removal plate 52, so that the separation of flue gas and dust is realized, therefore, the utility model discloses a rotary kiln flue gas dust removal device, through the setting of primary dust removal structure 3 and secondary dust removal structure 5, improve the cleaning degree of the waste gas produced by rotary kiln, prevent the smoke dust from being released without being treated completely.

[0035] The above are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rotary kiln flue gas dedusting device, characterized in that: Including rotary kiln body (1), one side of rotary kiln body (1) is provided with flue gas conveying pipeline (2), one end of flue gas conveying pipeline (2) away from rotary kiln body (1) is provided with primary dust removal structure (3), primary dust removal structure (3) includes settling tank (31), settling channel (32) is provided in settling tank (31), one side of settling tank (31) is provided with connecting pipe (4), one end of connecting pipe (4) away from settling tank (31) is provided with secondary dust removal structure (5), secondary dust removal structure (5) includes dust removal tank (51) communicated with one end of connecting pipe (4), chimney (6) is provided at the top of dust removal tank (51), a plurality of dust removal plates (52) are provided in dust removal tank (51), one side of dust removal plate (52) is provided with anti-sticking coating (53), dust removal plate (52) is obliquely arranged in dust removal tank (51).

2. A rotary kiln flue gas dedusting device according to claim 1, characterized in that: The settling tank (31) is provided with a partition (33), the partition (33) divides the settling tank (31) into multiple layers, the partition (33) is provided with a through hole (34), and the through hole (34) is used for passing flue gas.

3. A rotary kiln flue gas dedusting device according to claim 1, characterized in that: The settling tank (31) is provided with a plurality of fans (7) on both sides, the fan (7) is used for providing wind power to the settling tank (31), the fan (7) is provided with a wind volume controller (8), the settling tank (31) is provided with a fan (7) on each layer, and the fan (7) is arranged according to the direction of flue gas flow.

4. A rotary kiln flue gas dedusting device according to claim 1, characterized in that: The connecting pipe (4) is provided with a heating structure (9), the heating structure (9) includes heating wire (91), and the heating wire (91) is arranged along the inner wall of the connecting pipe (4).

5. A rotary kiln flue gas dedusting device according to claim 1, characterized in that: The dust removal tank (51) is provided with a dust discharge port (10) at the bottom, and the dust discharge port (10) is provided with a dust discharge valve (11).

6. A rotary kiln flue gas dedusting device according to claim 1, characterized in that: The dust removal tank (51) is provided with a dust sensor (12), and the dust sensor (12) is used for detecting the dust concentration in the dust removal tank (51).

7. A rotary kiln flue gas dedusting device according to claim 1, characterized in that: The bottom of the settling tank (31) and the dust removal tank (51) is provided with a plurality of supporting columns (13), and the bottom of the supporting column (13) is provided with a rubber pad (14).

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