Automatic desulfurization device of cement kiln

Abstract

The utility model belongs to the technical field of desulfurization automatic proportioning, and particularly relates to an automatic desulfurization device of a cement kiln, which comprises a detection device, at least one group of feeding components, at least one group of metering components and at least one group of material stirring components, the stirring assembly is connected to the other end of the metering assembly, a discharge port of the stirring assembly is connected with the raw material tank, and the detection device, the feeding assembly, the metering assembly and the stirring assembly are all connected with the raw material desulfurization controller. The metering assembly of the device can automatically weigh desulfurization powder, weighing is accurate, the desulfurization powder is pre-homogenized through the stirring assembly, the mixing effect of the desulfurization powder is better, manual operation is not needed in the whole desulfurization process, desulfurization is more automatic, and the labor cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic desulfurization proportioning, and in particular relates to an automatic desulfurization device for a cement kiln. Background Art

[0002] In the current cement production technology field, a large amount of flue gas is generated during the cement production process. The main components of the flue gas are SO2, NO X As the national and local governments have increasingly stringent environmental protection requirements for SO2 emissions from cement flue gas, flue gas needs to be desulfurized. Desulfurizers can reduce the surface tension of limestone slurry, reduce the critical nucleus radius, strengthen the oxidation of H2SO3, make CaSO4 and CaSO3 easy to precipitate gypsum, and CaSO4 and other acidic gases are in an unsaturated state, which hinders the formation of chemical hard scale. Desulfurizers are usually used for flue gas desulfurization. The traditional ratio is usually opened by manual control, which has high labor intensity, low work efficiency, poor ratio stability, and affects the desulfurization effect. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide an automatic desulfurization device for a cement kiln, which can automatically and accurately weigh and achieve a better desulfurization agent mixing effect.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an automatic desulfurization device for a cement kiln, comprising a detection device, a feeding component, a metering component and a mixing component, at least one group of the metering component and the feeding component is provided, one end of the metering component is connected to the discharge end of the feeding component, the mixing component is connected to the other end of the metering component, the discharge port of the mixing component is connected to the raw material trough, and the detection device, feeding component, metering component and mixing component are all connected to the raw material desulfurization controller.

[0005] Preferably, the feeding assembly includes a lower hopper, an electric gate and a feeding reamer, the electric gate is arranged at the material opening of the lower hopper, and the feeding reamer is arranged on a side of the electric gate away from the lower hopper.

[0006] Preferably, the metering component is a metering reamer, and a weighing sensor is provided on the metering reamer.

[0007] Preferably, the mixing component is a pre-homogenizing lower hopper, and a conveying reamer is provided at one end of the discharge port of the pre-homogenizing lower hopper.

[0008] Preferably, a signal sensor is provided in the pre-homogenization lower hopper.

[0009] Preferably, it also includes a flue gas desulfurization device, the flue gas desulfurization device is connected to the flue, and the flue gas desulfurization device and the detection device are both connected to the flue gas desulfurization controller.

[0010] Preferably, the flue gas desulfurization device includes a desulfurization water agent tank, a jet pump, an electromagnetic flowmeter and a desulfurization spray gun. The desulfurization water agent tank and the flue are connected through a desulfurization pipeline. The jet pump is arranged close to the desulfurization water agent tank, the electromagnetic flowmeter is arranged on the side of the jet pump away from the desulfurization water agent tank, and the desulfurization spray gun is arranged at the end of the desulfurization pipeline, and the outlet of the desulfurization spray gun faces the inside of the flue.

[0011] Preferably, a pressure transmitter and a pressure gauge are provided between the electromagnetic flowmeter and the desulfurization spray gun.

[0012] Preferably, inspection valves are provided on both sides of the jet pump and on both sides of the electromagnetic flowmeter.

[0013] Preferably, a spare pipeline is arranged in parallel with the jet pump, and a jet pump is also arranged on the spare pipeline.

[0014] Compared with the prior art, the above technical solution has the following beneficial effects:

[0015] 1. The utility model includes a detection device, a feeding component, a metering component and a mixing component. The detection device detects that the SO2 concentration in the flue gas is too high, and the detection device transmits a signal to the raw meal desulfurization controller. The raw meal desulfurization controller controls the feeding device to transport the desulfurization powder to the metering component. The metering component controls the weight of the desulfurization powder to reach a preset weight and then stops feeding. Finally, the desulfurization powder is fully mixed at the mixing component and then transported to the raw meal tank for desulfurization. The metering component of this device can automatically weigh the desulfurization powder with accurate weighing. The desulfurization powder is pre-homogenized through the mixing component to achieve a better mixing effect of the desulfurization powder. The entire desulfurization process does not require manual operation, and the desulfurization is more automated, reducing labor costs.

[0016] 2. When the detection device detects that the SO2 concentration in the flue gas is too high, the flue gas desulfurization device will start to desulfurize the flue gas in the flue at the same time to prevent the flue gas with high sulfur content from harming the environment after being discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the raw meal desulfurization device in the utility model.

[0018] Figure 2 It is a left view of the raw meal desulfurization device in the utility model.

[0019] Figure 3 It is a top view of the flue gas desulfurization device in the utility model.

[0020] Among them: 1. Support frame 2. Reducer 3. Feeding reamer 4. Raw meal desulfurization controller 5. Metering reamer 6. Conveying reamer 7. Electric gate 8. Pre-homogenization hopper 9. hopper 10. Weighing sensor 11. Feeding pipe 12. Discharge port 13. Online detector 14. Signal sensor 15. Desulfurization agent tank 16. Inspection valve 17. Jet pump 18. Electromagnetic flowmeter 19. Pressure transmitter 20. Pressure gauge 21. Desulfurization pipeline 22. Flue duct 23. Desulfurization spray gun 24. Flue gas desulfurization controller. DETAILED DESCRIPTION

[0021] Figures 1 to 3 It is the best embodiment of the utility model, and the following Figures 1 to 3 The utility model is further described.

[0022] like Figure 1~2 As shown, the utility model is an automatic desulfurization device for a cement kiln, comprising a detection device, a feeding component, a metering component and a mixing component. At least one group of metering components and feeding components is provided, the front end of the metering component is connected to the discharge end of the feeding component, the mixing component is connected to the discharge end of the metering component, the discharge port 12 of the mixing component is connected to the raw material trough, the detection device, the feeding component, the metering component and the mixing component are all connected to the raw material desulfurization controller 4, the detection device detects that the SO2 concentration in the flue gas is too high, the detection device transmits a signal to the raw material desulfurization controller, the raw material desulfurization controller controls the feeding device to transport the desulfurization powder to the metering component, the metering component controls the weight of the desulfurization powder to reach a preset weight and then stops feeding, and finally the desulfurization powder is fully mixed at the mixing component and then transported to the raw material trough for desulfurization.

[0023] In this embodiment, the detection device is an online detector 13, which is connected to the raw meal desulfurization controller 4. The feeding component includes a lower hopper 9, an electric gate 7 and a feeding reamer 3. The desulfurized powder is placed in the lower hopper 9. The electric gate 7 is arranged at the material port of the lower hopper 9. The feeding reamer 3 is arranged on the side of the electric gate 7 away from the lower hopper 9. The raw meal desulfurization controller 4 controls the switch of the electric gate 7. The metering component is a metering reamer 5. A weighing sensor 10 is arranged on the metering reamer 5. The weighing sensor 10 is connected to the raw meal desulfurization controller 4.

[0024] The online detector 13 detects that the SO2 concentration in the flue gas increases, and the online detector 13 transmits the signal to the raw meal desulfurization controller 4. The raw meal desulfurization controller 4 controls the electric gate 7 to open, and the desulfurization powder is discharged through the discharge hopper 9 and enters the feeding reamer 3. The feeding reamer 3 and the metering reamer 5 are connected by the discharge pipe 11. The desulfurization powder enters the metering reamer 5 from the discharge pipe 11. When the set weight is reached, the weighing sensor 10 sends a signal to the raw meal desulfurization controller 4 to stop further discharge.

[0025] In this embodiment, the number of the electric gate 7, the lower hopper 9, the feeding reamer 3 and the metering reamer 5 are all two, and they are symmetrical on both sides of the mixing component. The mixing component is a pre-homogenizing lower hopper 8, and a signal sensor 14 is arranged in the pre-homogenizing lower hopper 8. When the desulfurized powder reaches the set weight, the weighing sensor 10 sends a signal to the raw meal desulfurization controller 4, and the raw meal desulfurization controller 4 controls the signal sensor 14 to open the pre-homogenizing lower hopper 8, and the desulfurized powder enters the pre-homogenizing lower hopper 8 and is fully mixed inside the pre-homogenizing lower hopper 8. A conveying reamer 6 is arranged at one end of the discharge port 12 of the pre-homogenizing lower hopper 8. After the desulfurized powder is fully mixed inside the pre-homogenizing lower hopper 8, it enters the conveying reamer 6 through the material pipe, and is finally conveyed from the discharge port 12 to the raw meal tank to mix with the raw meal. The feed reamer 3, the metering reamer 5 and the conveying reamer 6 are all connected with a reducer 2. Two sets of feeding components and metering components can prevent the powder from being discharged from only one material outlet. The discharged material is fixed in the same position, and the subsequent homogenization effect is poor.

[0026] The utility model also includes a flue gas desulfurization device, which is connected to the flue 22. The flue gas desulfurization device and the online detector 13 are both connected to a flue gas desulfurization controller 24. The online detector 13 detects an increase in the SO2 concentration in the flue gas, and the online detector 13 transmits a signal to the flue gas desulfurization controller 24. The flue gas desulfurization controller 24 controls the flue gas desulfurization device to desulfurize the flue gas in the flue 22.

[0027] like Figure 3 As shown, the flue gas desulfurization device includes a desulfurization agent tank 15, a jet pump 17, an electromagnetic flowmeter 18 and a desulfurization spray gun 23. The desulfurization agent tank 15 is connected to the flue 22 through a desulfurization pipeline 21. The jet pump 17 is arranged near the desulfurization agent tank 15. The electromagnetic flowmeter 18 is arranged on the side of the jet pump 17 away from the desulfurization agent tank 15. The desulfurization spray gun 23 is threadedly connected to the end of the desulfurization pipeline 21, and the outlet of the desulfurization spray gun 23 faces the inside of the flue 22. The online detector 13 detects that the SO2 concentration in the flue gas increases, and the online detector 13 transmits the signal to the flue gas desulfurization controller 24. The flue gas desulfurization controller 24 controls the jet pump 17 to operate, and the desulfurization agent enters the desulfurization pipeline 21 from the desulfurization agent tank 15, passes through the electromagnetic flowmeter 18, and is sprayed into the flue 22 through the desulfurization spray gun 23 to be fully mixed with the flue gas.

[0028] A pressure transmitter 19 and a pressure gauge 20 are provided between the electromagnetic flowmeter 18 and the desulfurization spray gun 23 to detect the pressure in the desulfurization pipeline 21. A spare pipeline is provided in parallel at the jet pump 17, and a jet pump 17 is also provided on the spare pipeline. Inspection valves 16 are provided on both sides of the two jet pumps 17 and both sides of the electromagnetic flowmeter 18.

[0029] When the utility model is in use, the online detector 13 detects that the SO2 concentration in the flue gas increases, and the online detector 13 transmits the signal to the raw meal desulfurization controller 4 and the flue gas desulfurization controller 24. The flue gas desulfurization controller 24 first controls the injection pump 17 to operate, and the desulfurization water agent enters the desulfurization pipeline 21 from the desulfurization water agent tank 15, passes through the electromagnetic flowmeter 18 and the pressure transmitter 19, and is sprayed into the flue 22 through the desulfurization spray gun 23 to fully mix with the flue gas for desulfurization; at the same time, the raw meal desulfurization controller 4 controls the electric gate 7 to open, and the desulfurization powder agent The material is discharged through the hopper 9 and enters the feeding reamer 3. The raw meal desulfurization controller 4 controls the operation of each reducer 2, and the desulfurization powder enters the metering reamer 5. When the desulfurization powder reaches the set weight, the weighing sensor 10 sends a signal to the raw meal desulfurization controller 4. The raw meal desulfurization controller 4 controls the signal sensor 14 to open the pre-homogenization hopper 8. The desulfurization powder enters the pre-homogenization hopper 8. After being fully mixed inside the pre-homogenization hopper 8, it enters the conveying reamer 6 through the material pipe, and is finally transported from the discharge port 12 to the raw meal trough to be mixed with the raw meal.

[0030] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. An automatic desulfurization device for a cement kiln, characterized in that: The invention comprises a detection device, a feeding component, a metering component and a mixing component. The metering component and the feeding component are provided in at least one group. One end of the metering component is connected to the discharge end of the feeding component, and the mixing component is connected to the other end of the metering component. The discharge port (12) of the mixing component is connected to the raw material tank. The detection device, the feeding component, the metering component and the mixing component are all connected to the raw material desulfurization controller.

2. The automatic desulfurization device for a cement kiln according to claim 1, characterized in that: The feeding assembly comprises a lower hopper (9), an electric gate (7) and a feeding reamer (3); the electric gate (7) is arranged at a material opening of the lower hopper (9); and the feeding reamer (3) is arranged on a side of the electric gate (7) away from the lower hopper (9).

3. The automatic desulfurization device for a cement kiln according to claim 1, characterized in that: The metering component is a metering reamer (5), and a weighing sensor (10) is arranged on the metering reamer (5).

4. The automatic desulfurization device for a cement kiln according to claim 1, characterized in that: The mixing component is a pre-homogenizing lower hopper (8), and a conveying reamer (6) is provided at one end of a material outlet (12) of the pre-homogenizing lower hopper (8).

5. The automatic desulfurization device for a cement kiln according to claim 4, characterized in that: A signal sensor (14) is arranged in the pre-homogenization lower hopper (8).

6. The automatic desulfurization device for a cement kiln according to claim 1, characterized in that: It also includes a flue gas desulfurization device, which is connected to the flue (22), and the flue gas desulfurization device and the detection device are both connected to the flue gas desulfurization controller (24).

7. The automatic desulfurization device for a cement kiln according to claim 6, characterized in that: The flue gas desulfurization device comprises a desulfurization agent tank (15), a jet pump (17), an electromagnetic flowmeter (18) and a desulfurization spray gun (23); the desulfurization agent tank (15) and the flue (22) are connected via a desulfurization pipeline (21); the jet pump (17) is arranged close to the desulfurization agent tank (15); the electromagnetic flowmeter (18) is arranged on a side of the jet pump (17) away from the desulfurization agent tank (15); the desulfurization spray gun (23) is arranged at the end of the desulfurization pipeline (21); and the outlet of the desulfurization spray gun (23) faces the inside of the flue (22).

8. The automatic desulfurization device for a cement kiln according to claim 7, characterized in that: A pressure transmitter (19) and a pressure gauge (20) are provided between the electromagnetic flowmeter (18) and the desulfurization spray gun (23).

9. The automatic desulfurization device for a cement kiln according to claim 7, characterized in that: Inspection valves (16) are provided on both sides of the jet pump (17) and on both sides of the electromagnetic flowmeter (18).

10. The automatic desulfurization device for cement kiln according to claim 7, characterized in that: A spare pipeline is arranged in parallel with the injection pump (17), and the injection pump (17) is also arranged on the spare pipeline.

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