Calcining kiln flue gas desulfurization spraying mechanism

Abstract

The utility model relates to the technical field of flue gas desulfurization, and discloses a roasting kiln flue gas desulfurization spraying mechanism which comprises a spraying tower, a rotary spraying assembly is assembled on the inner wall of the spraying tower, a liquid supply assembly is arranged on the outer side of the spraying tower, the rotary spraying assembly is connected with a liquid storage tank through the liquid supply assembly, and the liquid storage tank is connected with the spraying tower. Detection assemblies are arranged on the outer side of the spraying tower and the outer side of the liquid supply assembly, an air inlet pipe and an air outlet pipe are arranged on the outer side of the spraying tower, the rotary spraying assembly comprises a mounting frame, the mounting frame is arranged in the middle of the spraying tower, a fixing column is fixedly connected to the top of the mounting frame, and the fixing column is fixedly connected to the outer side of the spraying tower. And the middle part of the fixed column is rotationally connected with a rotating shaft. According to the flue gas desulfurization device, under the cooperation of the water pump, the fixing column, the rotating shaft, the connecting pipe, the nozzles and other structures, the spraying range of the desulfurization liquid is effectively expanded, the mixing range of flue gas of the roasting kiln and the desulfurization liquid is widened, and then the flue gas desulfurization quality and desulfurization efficiency of the roasting kiln are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flue gas desulfurization, especially to a calcination kiln flue gas desulfurization spraying mechanism. BACKGROUND

[0002] The calcination kiln is a high-temperature equipment for heating, baking or calcining materials, and is usually used in the industries of ore, metallurgy and chemistry. During the calcination process, especially the calcination of metal ore, a large amount of harmful gases such as sulfur dioxide will be released. The emission of sulfur dioxide not only pollutes the atmospheric environment, but also forms acid rain by combining with water vapor, which causes harm to soil, water and plants.

[0003] In order to solve the problem of sulfur dioxide emission in the flue gas of the calcination kiln, the wet spraying desulfurization technology is usually used for desulfurization operation. The spraying desulfurization technology is widely used due to its high efficiency, moderate cost and easy implementation. The spraying mechanism is an important core part of the spraying desulfurization technology. Its basic principle is that when the flue gas passes through the spraying tower, it reacts with the sprayed desulfurization liquid to absorb and convert the sulfur dioxide in the flue gas into solid products. Although the traditional spraying mechanism can well perform the desulfurization operation, it still has the following obvious deficiencies.

[0004] In the traditional spraying mechanism, the positions and spraying angles of the spray head and the nozzle are set in a fixed mode. From the structural point of view, since the position of the spray head cannot be changed, its spraying range is determined after installation. In the actual desulfurization operation process, the flow of the flue gas in the spraying tower is complex and uncertain. The concentration, flow rate and flow direction of the flue gas in different areas are different, which makes the flue gas in some areas unable to contact with enough desulfurization liquid, so that the pollutants such as sulfur dioxide cannot be effectively removed, greatly reducing the desulfurization effect. In addition, the concentration of flue gas is one of the important factors that determine the desulfurization effect. Since there is no corresponding detection and control device, the traditional spraying mechanism cannot adjust the spraying flow according to the concentration of flue gas. Therefore, a calcination kiln flue gas desulfurization spraying mechanism is proposed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] In order to make up for the above deficiencies, the utility model provides a calcination kiln flue gas desulfurization spraying mechanism, which aims to improve the problem that the positions and spraying angles of the spray head and the nozzle of the traditional spraying mechanism in the prior art are set in a fixed mode, and the spraying range and desulfurization quality are greatly reduced.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of calcination kiln flue gas desulfurization spray mechanism, including spray tower, the inner wall of the spray tower is equipped with rotary spray component, the outside of the spray tower is provided with liquid supply component, the rotary spray component is connected with liquid storage tank by the liquid supply component, the spray tower and the outside of the liquid supply component are each provided with detection component, the outside of the spray tower is provided with air inlet pipe and air outlet pipe;

[0008] The rotary spray component includes a mounting frame, which is arranged in the middle of the spray tower. A fixed column is fixedly connected to the top of the mounting frame. A rotating shaft is rotatably connected to the middle of the fixed column. An adapter pipe is assembled to the middle of the rotating shaft. A spray head is fixedly connected to the outside of the adapter pipe.

[0009] As a further description of the above technical solution:

[0010] The detection component includes an inductor, which is assembled to the outside of the air inlet pipe. A control block is fixedly connected to the outside of the liquid storage tank.

[0011] As a further description of the above technical solution:

[0012] The liquid supply component includes a water pump, which is assembled to the middle of the liquid storage tank. A delivery pipe one is fixedly connected to the output end of the water pump.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the spray tower is fixedly connected with a fixed frame, and the end of the fixed frame away from the spray tower is fixedly connected to the outside of the mounting frame.

[0015] As a further description of the above technical solution:

[0016] The middle of the spray head is provided with a nozzle, and the spray head and the nozzle are both rotatably connected to the top of the fixed column.

[0017] As a further description of the above technical solution:

[0018] The inductor and the control block are electrically connected together.

[0019] As a further description of the above technical solution:

[0020] The end of the delivery pipe one away from the water pump is fixedly connected with a delivery pipe two, and the delivery pipe two is arranged in the inside of the fixed column.

[0021] As a further description of the above technical solution:

[0022] The outside of the spray tower is fixedly connected with a return pipe, and the end of the return pipe away from the spray tower is fixedly connected to the outside of the liquid storage tank.

[0023] The utility model has the advantages of the following:

[0024] 1. In the utility model, the desulfurization liquid is stably delivered to the connecting pipe through the water pump, the desulfurization liquid is in a high-pressure state, and the nozzle sprays rapidly and powerfully after the desulfurization liquid reaches the connecting pipe. Due to the strong centrifugal force generated when the liquid sprays at high speed, the shaft connected thereto rotates at high speed around the shaft center in the stable fixing column. Multiple connecting pipes are arranged to cooperate with each other, a synergistic effect is formed, and the rotation effect is enhanced, thereby effectively expanding the spraying range, solving the problem that the mixing range of the desulfurization liquid and part of the flue gas is limited due to the fixed spraying range, and effectively improving the desulfurization quality and desulfurization efficiency of the calcination kiln flue gas.

[0025] 2. In the utility model, the concentration of the calcination kiln flue gas entering the spraying tower through the air inlet pipe is monitored in real time through the inductor. Once the concentration of the flue gas is monitored, the inductor will transmit the detection signal to the control block. After receiving the signal transmitted by the inductor, the control block sends a corresponding control signal to the water pump according to the preset setting value, thereby realizing fine adjustment of the working state of the water pump, and spraying an accurate amount of the calcination kiln flue gas according to the real-time concentration of the calcination kiln flue gas, optimizing the reaction conditions of the calcination kiln flue gas and the desulfurization liquid, effectively improving the desulfurization quality, and reducing resource waste. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of the calcination kiln flue gas desulfurization spraying mechanism is provided for the utility model;

[0027] Figure 2 A structure schematic view of the second delivery pipe of the calcination kiln flue gas desulfurization spraying mechanism is provided for the utility model;

[0028] Figure 3 A structure schematic view of the fixing column of the calcination kiln flue gas desulfurization spraying mechanism is provided for the utility model;

[0029] Figure 4 A structure schematic view of the nozzle of the calcination kiln flue gas desulfurization spraying mechanism is provided for the utility model.

[0030] LEGEND:

[0031] 1. Spraying tower; 2. Liquid storage tank; 3. Air inlet pipe; 4. Air outlet pipe; 5. Fixed frame; 6. Rotating spraying assembly; 7. Mounting frame; 8. Fixing column; 9. Shaft; 10. Connecting pipe; 11. Spray head; 12. Nozzle; 13. Liquid supply assembly; 14. Water pump; 15. First delivery pipe; 16. Second delivery pipe; 17. Return pipe; 18. Detection assembly; 19. Inductor; 20. Control block. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0033] With reference to Figure 2 and Figure 3 An embodiment provided by the present application is a calcination kiln flue gas desulfurization spraying mechanism, which comprises a spraying tower 1, and a rotating spraying assembly 6 is assembled on the inner wall of the spraying tower 1, and is used for rotating spraying operation by centrifugal force generated by spraying of desulfurization liquid, and compared with a traditional fixed type, the spraying range is greatly improved, and thus the mixing area of the desulfurization liquid and the calcination kiln flue gas in a certain range is improved, so that the desulfurization efficiency is greatly improved. A liquid supply assembly 13 is arranged on the outer side of the spraying tower 1, and is used for providing the desulfurization liquid for operation of the rotating spraying assembly 6, and giving the desulfurization liquid a certain pressure, and providing a motive power required for rotation. The rotating spraying assembly 6 is connected with a liquid storage tank 2 through the liquid supply assembly 13. The spraying tower 1 and the liquid supply assembly 13 are both provided with a detection assembly 18 on the outer side, which is used for detecting and adjusting the mixing ratio of the calcination kiln flue gas and the desulfurization liquid, and improving the scientific nature and efficiency of desulfurization. The spraying tower 1 is provided with an air inlet pipe 3 and an air outlet pipe 4 on the outer side.

[0034] The rotating spraying assembly 6 comprises a mounting frame 7, the mounting frame 7 is arranged in the middle of the spraying tower 1, a fixed column 8 is fixedly connected to the top of the mounting frame 7, a rotating shaft 9 is rotatably connected to the middle of the fixed column 8, a connecting pipe 10 is assembled to the middle of the rotating shaft 9, a spray head 11 is fixedly connected to the outer side of the connecting pipe 10, and the desulfurization liquid in a high-pressure state is quickly sprayed out through a nozzle 12 in the spray head 11. Due to the high flow rate, the rotating shaft 9 rotates at high speed in the fixed column 8 under the action of centrifugal force. At the same time, the multiple connecting pipes 10 are arranged to synchronously rotate and transmit, so that the rotating effect is enhanced, the spraying range is greatly improved, the mixing and reaction range of the desulfurization liquid and the calcination kiln flue gas is greatly improved, and thus the desulfurization efficiency of the calcination kiln flue gas is improved.

[0035] With reference to Figure 1 and Figure 2, the detection assembly 18 comprises an inductor 19, the inductor 19 is assembled on the outside of the air inlet pipe 3, the outside of the liquid storage tank 2 is fixedly connected with a control block 20, through the high-precision inductor 19, the concentration of the flue gas of the roasting kiln entering the spray tower 1 through the air inlet pipe 3, i.e. will receive spray desulfurization, the inductor 19 will accurately transmit the detection signal obtained to the intelligent control block 20, the control block 20 will send accurate and corresponding control signals to the water pump 14 according to the scientific parameter value set in advance, so that the spray of accurate amount can be realized according to the concentration of the flue gas of the roasting kiln, the efficiency and scientific nature of the desulfurization process are guaranteed, the liquid supply assembly 13 comprises a water pump 14, the water pump 14 is assembled in the middle of the liquid storage tank 2, the output end of the water pump 14 is fixedly connected with a conveying pipe one 15, the liquid supply assembly 13 comprises a water pump 14, the water pump 14 is assembled in the middle of the liquid storage tank 2, the output end of the water pump 14 is fixedly connected with a conveying pipe one 15, the desulfurization liquid is pressurized by the water pump 14 and conveyed to the connecting pipe 10 through the conveying pipe one 15 and the conveying pipe two 16, the desulfurization liquid in high-pressure state is quickly sprayed out through the nozzle 12 in the spray head 11, so that the rotating spray assembly 6 can be operated, the spray range is improved, and the desulfurization efficiency of the flue gas of the roasting kiln is improved.

[0036] Referring to Figures 1-4 , the inner wall of the spray tower 1 is fixedly connected with a fixed frame 5, the end of the fixed frame 5 away from the spray tower 1 is fixedly connected on the outside of the mounting frame 7, the mounting frame 7 and the rotating spray assembly 6 arranged on the top of the mounting frame 7 are stably supported by the fixed frame 5, the stability of the rotating spray operation is improved, the middle of the spray head 11 is provided with a nozzle 12, the spray head 11 and the nozzle 12 are both rotationally connected on the top of the fixed column 8, the pressure during spraying is improved through the hole design of the nozzle 12, the spraying distance and atomization effect are improved, the mixing range and reaction efficiency of the spraying liquid and the flue gas of the roasting kiln are improved, and the desulfurization efficiency and desulfurization quality of the flue gas of the roasting kiln are improved, the inductor 19 and the control block 20 are electrically connected together, the concentration of different flue gas of the roasting kiln is quantitatively sprayed by the detection transmission of the inductor 19 and the calculation feedback of the control block 20, the spraying efficiency is improved, the invalid spraying of spraying is solved, the production resources are saved, the end of the conveying pipe one 15 away from the water pump 14 is fixedly connected with a conveying pipe two 16, the conveying pipe two 16 is arranged in the inside of the fixed column 8, the outside of the spray tower 1 is fixedly connected with a backflow pipe 17, the end of the backflow pipe 17 away from the spray tower 1 is fixedly connected on the outside of the liquid storage tank 2, the desulfurization liquid after the flue gas operation of the roasting kiln is recycled through the backflow pipe 17, and the resource waste is reduced.

[0037] Working principle: the calcination kiln flue gas enters the spray tower 1 through the inlet pipe 3 and starts to rise, then the water pump 14 is started, the water pump 14 delivers the desulfurization liquid to the adapter pipe 10 through the delivery pipe one 15 and the delivery pipe two 16, the high-pressure desulfurization liquid is quickly sprayed out through the nozzle 12 in the spray head 11, due to the high flow rate, under the action of centrifugal force, the rotating shaft 9 rotates at high speed in the fixed column 8, at the same time, a plurality of adapter pipes 10 are arranged to enhance the rotation effect and improve the spraying range, this method solves the problems that the spraying range is fixed and the desulfurization liquid and part of the flue gas are not fully mixed, at the same time, the inductor 19 is used to monitor the concentration of the flue gas sprayed in the spray tower 1 through the inlet pipe 3 in real time, the inductor 19 transmits the detection signal to the control block 20, the control block 20 sends corresponding signals to the water pump 14 according to the set value, so that the spraying amount can be accurately controlled according to the flue gas concentration.

[0038] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A desulfurization spraying mechanism for flue gas from a roasting kiln, comprising a spraying tower (1), characterized in that: The inner wall of the spray tower (1) is equipped with a rotating spray assembly (6), and a liquid supply assembly (13) is provided on the outer side of the spray tower (1). The rotating spray assembly (6) is connected to a storage tank (2) through the liquid supply assembly (13). Detection assemblies (18) are provided on the outer side of both the spray tower (1) and the liquid supply assembly (13). An air inlet pipe (3) and an air outlet pipe (4) are provided on the outer side of the spray tower (1). The rotating spray assembly (6) includes a mounting frame (7) which is located in the middle of the spray tower (1). A fixed column (8) is fixedly connected to the top of the mounting frame (7). A rotating shaft (9) is rotatably connected to the middle of the fixed column (8). A connecting pipe (10) is assembled in the middle of the rotating shaft (9). A nozzle (11) is fixedly connected to the outside of the connecting pipe (10).

2. The desulfurization spraying mechanism for flue gas in a roasting kiln according to claim 1, characterized in that: The detection component (18) includes a sensor (19) which is mounted on the outside of the air inlet pipe (3), and a control block (20) is fixedly connected to the outside of the liquid storage tank (2).

3. The desulfurization spraying mechanism for flue gas in a roasting kiln according to claim 1, characterized in that: The liquid supply assembly (13) includes a water pump (14), which is mounted in the middle of the liquid storage tank (2), and the output end of the water pump (14) is fixedly connected to a delivery pipe (15).

4. The desulfurization spraying mechanism for flue gas in a roasting kiln according to claim 1, characterized in that: The inner wall of the spray tower (1) is fixedly connected to a fixing frame (5), and one end of the fixing frame (5) away from the spray tower (1) is fixedly connected to the outside of the mounting frame (7).

5. The desulfurization spraying mechanism for flue gas in a roasting kiln according to claim 1, characterized in that: The nozzle (12) is provided in the middle of the nozzle (11), and both the nozzle (11) and the nozzle (12) are rotatably connected to the top of the fixed column (8).

6. The desulfurization spraying mechanism for flue gas in a roasting kiln according to claim 2, characterized in that: The sensor (19) is electrically connected to the control block (20).

7. The desulfurization spraying mechanism for flue gas in a roasting kiln according to claim 3, characterized in that: The end of the first delivery pipe (15) away from the water pump (14) is fixedly connected to the second delivery pipe (16), and the second delivery pipe (16) is located inside the fixed column (8).

8. The desulfurization spraying mechanism for flue gas in a roasting kiln according to claim 1, characterized in that: A return pipe (17) is fixedly connected to the outside of the spray tower (1), and the end of the return pipe (17) away from the spray tower (1) is fixedly connected to the outside of the liquid storage tank (2).

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