Sintering flue gas CO removal system

Abstract

The invention discloses a sintering flue gas CO removal system, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a flue gas box, the side surface of the flue gas box is communicated with an exhaust pipe, the inner wall of the exhaust pipe is fixedly connected with a bracket, the inner surface of the bracket is rotatably connected with fan blades, the inner surface of the flue gas box is fixedly connected with a spray head, and the spray head is fixedly connected with the bottom plate. The input end of the nozzle is communicated with a three-way pipe, the upper end of the three-way pipe is communicated with a water inlet pipe, the upper end of the three-way pipe is communicated with a liquid inlet pipe, the lower surface of the bottom plate is communicated with a drainage pipe, and the lower end of the drainage pipe is fixedly connected with a waste water tank. Crystallization or deposition of a sodium hydroxide solution and a reaction product in the equipment can be reduced through the clear water washing step, the risk of pipeline blockage and nozzle blockage is reduced, the service life of the equipment is prolonged, and the maintenance frequency and cost are reduced.

Description

Technical Field

[0001] This invention relates to the field of flue gas removal technology, and in particular to a CO removal system for sintering flue gas. Background Technology

[0002] In industrial production processes, such as boiler combustion, chemical reactions, and waste incineration, flue gas containing acidic pollutants like sulfur dioxide and hydrogen chloride is generated. If emitted directly without treatment, it will seriously harm the atmospheric environment and human health. Wet absorption processes are commonly used to treat such flue gas, removing pollutants through a neutralization reaction between an alkaline solution and the acidic gas. Traditional single-stage absorption processes rely solely on alkaline solutions to absorb the flue gas. The resulting salts tend to crystallize and deposit on the inner walls of the equipment, pipes, and nozzles, leading to pipe blockage, reduced nozzle atomization, and consequently, decreased absorption efficiency. This can even cause corrosion and damage to the equipment, requiring frequent shutdowns for cleaning and maintenance, increasing labor costs and equipment wear. If the waste liquid after the absorption reaction is not cleaned promptly, it may pose a risk of secondary pollution due to residual acidic gases or high concentrations of salts. Furthermore, traditional processes rely heavily on manual control of valves and pumps for absorption and cleaning, resulting in cumbersome procedures and high frequency of manual intervention, making it difficult to meet the demands of continuous and automated production. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a CO removal system for sintering flue gas. This system addresses the issue that salts generated during the reaction easily crystallize and deposit on the inner walls of the equipment, pipes, and nozzles, leading to pipe blockage, reduced nozzle atomization, and consequently affecting absorption efficiency. This can even cause equipment corrosion and damage, requiring frequent shutdowns for cleaning and maintenance, increasing labor costs and equipment wear. Furthermore, if the waste liquid after the absorption reaction is not cleaned in a timely manner, it may pose a risk of secondary pollution due to residual acidic gases or high concentrations of salts. In addition, traditional processes rely heavily on manual control of valves and pumps for absorption and cleaning steps, resulting in cumbersome operation procedures and high frequency of manual intervention, making it difficult to meet the needs of continuous and automated production. The exhaust pipe draws the flue gas into the flue gas chamber.

[0004] The present invention also provides a sintering flue gas CO removal system as described above, comprising a base plate, a flue gas box fixedly connected to the upper surface of the base plate, an exhaust pipe connected to the side surface of the flue gas box, a bracket fixedly connected to the inner wall of the exhaust pipe, a fan blade rotatably connected to the inner surface of the bracket, a nozzle fixedly connected to the inner surface of the flue gas box, a T-junction pipe connected to the input end of the nozzle, a water inlet pipe connected to the upper end of the T-junction pipe, a liquid inlet pipe connected to the upper end of the T-junction pipe, a drain pipe connected to the lower surface of the base plate, a wastewater tank fixedly connected to the lower end of the drain pipe, the drain pipe penetrating to the inner wall of the wastewater tank, a water tank fixedly connected to the lower surface of the base plate, and a liquid tank fixedly connected to the lower surface of the base plate.

[0005] According to the CO removal system for sintering flue gas of the present invention, a valve one is provided on the water inlet pipe and a valve two is provided on the liquid inlet pipe, and the water inlet pipe and the liquid inlet pipe can be flexibly controlled by rotating the valve one and the valve two.

[0006] According to the CO removal system for sintering flue gas of the present invention, a motor is fixedly connected to the outer surface of the support, and the fan blades are driven by the motor. The motor shaft is directly connected to the fan blades, avoiding the energy loss of traditional transmission methods.

[0007] According to the CO removal system for sintering flue gas of the present invention, a water pump is fixedly connected to the side surface of the water tank, and the other end of the water inlet pipe is connected to the output end of the water pump. The water pump can pressurize the water in the water tank and send it to the nozzle through the water inlet pipe.

[0008] According to the CO removal system for sintering flue gas of the present invention, a second water pump is fixedly connected to the side of the liquid tank, and the other end of the liquid inlet pipe is connected to the output end of the second water pump. The solution in the liquid tank can be delivered to the nozzle by the second water pump.

[0009] According to the CO removal system for sintering flue gas of the present invention, the flue gas box is provided with an insertion hole, and a glass is fixedly connected to the inner surface of the insertion hole. The flue gas treatment status inside the flue gas box can be observed through the glass inside the insertion hole.

[0010] According to the CO removal system for sintering flue gas of the present invention, a support leg is fixedly connected to the lower surface of the base plate, and the nozzle is located above the extraction pipe. When the extraction pipe draws the flue gas into the chamber, the liquid sprayed from the nozzle can effectively dissolve the flue gas.

[0011] According to the CO removal system for sintering flue gas of the present invention, the inner wall of the liquid inlet pipe is made of stainless steel, and the inner surface of the flue gas box is made of fiberglass. Stainless steel and fiberglass have good corrosion resistance and strength, and can resist corrosion by chemical substances.

[0012] Beneficial effects: The exhaust pipe draws the flue gas into the flue gas box. When valve two is opened, water pump two sends the sodium hydroxide solution in the liquid tank to the nozzle through the inlet pipe, where it is absorbed by the flue gas in the box. Then, valve one is opened, and water pump one draws water out of the water tank and sends it to the nozzle through the inlet pipe, cleaning the liquid inside the box. The waste liquid is then discharged to the waste liquid tank through the drain pipe. This reduces the intensity of manual operation. The water rinsing step can reduce the crystallization or deposition of sodium hydroxide solution and reaction products in the equipment, reducing the risk of pipe blockage and nozzle blockage, extending the service life of the equipment, and reducing maintenance frequency and costs.

[0013] The CO removal system for sintering flue gas in this technical solution works as follows: Flue gas is drawn into a flue gas box through an exhaust pipe; valve two is opened, and water pump two delivers sodium hydroxide solution from the liquid tank to the nozzles through an inlet pipe to absorb the flue gas in the box; then valve one is opened, and water pump one extracts water from the water tank and delivers it to the nozzles through an inlet pipe to clean the liquid inside the box; finally, the waste liquid is discharged to a waste liquid tank through a drain pipe. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a front view structural diagram of the CO removal system for sintering flue gas of the present invention;

[0016] Figure 2 This is a top cross-sectional view of the CO removal system for sintering flue gas of the present invention.

[0017] Figure 3 This is a rear view of the CO removal system for sintering flue gas of the present invention.

[0018] Figure 4 This is a left-side structural view of the CO removal system for sintering flue gas of the present invention;

[0019] Legend:

[0020] 1. Water inlet pipe; 2. Valve 1; 3. T-pipe; 4. Flue gas box; 5. Insertion hole; 6. Glass; 7. Water tank; 8. Water pump 1; 9. Support leg; 10. Valve 2; 11. Exhaust pipe; 12. Liquid inlet pipe; 13. Drain pipe; 14. Liquid tank; 15. Water pump 2; 16. Wastewater tank; 17. Nozzle; 18. Fan blade; 19. Bracket; 20. Motor; 21. Base plate. Detailed Implementation

[0021] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0022] Reference Figure 1-4 An embodiment of the present invention discloses a CO removal system for sintering flue gas, comprising: a base plate 21, a flue gas box 4 fixedly connected to the upper surface of the base plate 21, an exhaust pipe 11 connected to the side surface of the flue gas box 4, a bracket 19 fixedly connected to the inner wall of the exhaust pipe 11, a fan blade 18 rotatably connected to the inner surface of the bracket 19, and a motor 20 fixedly connected to the outer surface of the bracket 19, the fan blade 18 being driven by the motor 20.

[0023] Specifically: The motor drives the fan blades to rotate at high speed, and the strong suction generated by the rotation of the fan blades draws the flue gas from the outside air into the flue gas box.

[0024] A nozzle 17 is fixedly connected to the inner surface of the flue gas box 4. The input end of the nozzle 17 is connected to a three-way pipe 3. The upper end of the three-way pipe 3 is connected to a water inlet pipe 1. A valve 1 2 is installed on the water inlet pipe 1. The upper end of the three-way pipe 3 is connected to a liquid inlet pipe 12. A valve 2 10 is installed on the liquid inlet pipe 12. A drain pipe 13 is connected to the lower surface of the base plate 21. A wastewater tank 16 is fixedly connected to the lower end of the drain pipe 13. The drain pipe 13 penetrates to the inner wall of the wastewater tank 16. A water tank 7 is fixedly connected to the lower surface of the base plate 21. A water pump 1 8 is fixedly connected to the side surface of the water tank 7. The other end of the water inlet pipe 1 is connected to the output end of the water pump 1 8. A liquid tank 14 is fixedly connected to the lower surface of the base plate 21. A water pump 2 15 is fixedly connected to the side surface of the liquid tank 14. The other end of the liquid inlet pipe 12 is connected to the output end of the water pump 2 15.

[0025] Specifically: the exhaust pipe 11 draws the flue gas into the flue gas box 4. The worker opens valve 2 10, and water pump 2 15 sends the sodium hydroxide solution in the liquid tank 14 to the nozzle 17 through the liquid inlet pipe 12 to absorb the flue gas in the box. Then, valve 1 2 is opened, and water pump 1 8 draws out the water in the water tank 7 and sends it to the nozzle 17 through the water inlet pipe 1 to clean the liquid inside the box. The waste liquid is discharged to the waste liquid tank 16 through the drain pipe 13. This reduces the intensity of manual operation. The water rinsing step can reduce the crystallization or deposition of sodium hydroxide solution and reaction products in the equipment, reduce the risk of pipe blockage and nozzle blockage, extend the service life of the equipment, and reduce the frequency and cost of maintenance.

[0026] The flue gas box 4 is provided with an insertion hole 5, and a glass 6 is fixedly connected to the inner surface of the insertion hole 5. A support leg 9 is fixedly connected to the lower surface of the base plate 21. The nozzle 17 is located above the suction pipe 11. The inner wall of the liquid inlet pipe 12 is made of stainless steel, and the inner surface of the flue gas box 4 is made of fiberglass.

[0027] Specifically: The flue gas box 4 is equipped with an insertion hole 5, which allows workers to observe the interior of the flue gas box 4 through the glass on the insertion hole 5. Stainless steel and fiberglass have good corrosion resistance and strength, and can resist the corrosion of chemical substances.

[0028] Working principle: The exhaust pipe 11 draws the flue gas into the flue gas box 4. The worker opens valve 2 10, and water pump 2 15 sends the sodium hydroxide solution in the liquid tank 14 to the nozzle 17 through the liquid inlet pipe 12 to absorb the flue gas in the box. Then, valve 1 2 is opened, and water pump 1 8 draws out the water in the water tank 7 and sends it to the nozzle 17 through the water inlet pipe 1 to clean the liquid inside the box. The waste liquid is discharged to the waste liquid tank 16 through the drain pipe 13. This reduces the intensity of manual operation. The water rinsing step can reduce the crystallization or deposition of sodium hydroxide solution and reaction products in the equipment, reduce the risk of pipe blockage and nozzle blockage, extend the service life of the equipment, and reduce the frequency and cost of maintenance.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A CO removal system for sintering flue gas, characterized in that, include: A base plate (21) is provided, on the upper surface of which a flue gas box (4) is fixedly connected. A suction pipe (11) is connected to the side surface of the flue gas box (4). A bracket (19) is fixedly connected to the inner wall of the suction pipe (11). A fan blade (18) is rotatably connected to the inner surface of the bracket (19). A nozzle (17) is fixedly connected to the inner surface of the flue gas box (4). A three-way pipe (3) is connected to the input end of the nozzle (17). The upper end of the tee is connected to a water inlet pipe (1), the upper end of the tee pipe (3) is connected to a liquid inlet pipe (12), the lower surface of the base plate (21) is connected to a drain pipe (13), the lower end of the drain pipe (13) is fixedly connected to a wastewater tank (16), the drain pipe (13) penetrates to the inner wall of the wastewater tank (16), the lower surface of the base plate (21) is fixedly connected to a water tank (7), and the lower surface of the base plate (21) is fixedly connected to a liquid tank (14).

2. The CO removal system for sintering flue gas according to claim 1, characterized in that, The water inlet pipe (1) is equipped with valve one (2), and the liquid inlet pipe (12) is equipped with valve two (10).

3. The CO removal system for sintering flue gas according to claim 1, characterized in that, A motor (20) is fixedly connected to the outer surface of the bracket (19), and the fan blade (18) is driven by the motor (20).

4. The CO removal system for sintering flue gas according to claim 1, characterized in that, A water pump (8) is fixedly connected to the side surface of the water tank (7), and the other end of the water inlet pipe (1) is connected to the output end of the water pump (8).

5. The CO removal system for sintering flue gas according to claim 1, characterized in that, The side of the liquid tank (14) is fixedly connected to a second water pump (15), and the other end of the inlet pipe (12) is connected to the output end of the second water pump (15).

6. The CO removal system for sintering flue gas according to claim 1, characterized in that, The flue gas box (4) is provided with an insertion hole (5), and a glass (6) is fixedly connected to the inner surface of the insertion hole (5).

7. The CO removal system for sintering flue gas according to claim 1, characterized in that, The lower surface of the base plate (21) is fixedly connected to a support leg (9), and the nozzle (17) is located above the air extraction pipe (11).

8. The CO removal system for sintering flue gas according to claim 1, characterized in that, The inner wall of the liquid inlet pipe (12) is made of stainless steel, and the inner surface of the flue gas box (4) is made of fiberglass.

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