Dedusting and desulfurizing device for flue gas of annealing furnace

Abstract

The utility model provides a flue gas dedusting and desulfurizing device for an annealing furnace, which is characterized in that a downward gas inlet pipeline is arranged at the upper end of cyclone deoiling equipment, a pipeline cooling device is arranged in the gas inlet pipeline, and the side surface of the lower end of the cyclone deoiling equipment is connected to a first gas inlet in the side surface of the lower end of a desulfurizing tower through a pipeline; a first gas outlet in the upper end of the desulfurization tower is connected to a second gas inlet in the side surface of the lower end of the dust removal tower through a pipeline; the desulfurization tower is internally provided with multiple stages of spraying devices arranged up and down, and the lower end of the desulfurization tower is connected to the circulating water tank; a second air outlet in the upper end of the dust removal tower is connected with a chimney through a pipeline and an induced draft fan, a pipeline cooling device is connected with a cooling water tower, and a caustic soda flake tank is connected with a spraying device; the lime slurry tank is connected to the circulating water tank. The flue gas desulfurization device has the advantages of simple structure, convenience in installation, simplicity in operation, capability of effectively dedusting and desulfurizing flue gas of the annealing furnace and less pollution.

Description

TECHNICAL FIELD

[0001] The utility model relates to an annealing furnace flue gas dust removal desulfurization device. BACKGROUND

[0002] At present, the most common method for annealing furnace flue gas dust removal desulfurization is wet dust removal desulfurization, which mainly uses desulfurizer solution to wash flue gas in a desulfurization reaction tower, so that the two have a strong chemical reaction, remove dust and sulfides in the flue gas, and achieve the purpose of purifying flue gas.

[0003] The current wet dust removal desulfurizer has poor desulfurization effect and low desulfurization quality due to insufficient contact between the desulfurizer solution and the gas, which affects production efficiency. UTILITY MODEL CONTENTS

[0004] In view of the defects in the prior art, the utility model provides an annealing furnace flue gas dust removal desulfurization device, which comprises a pipeline cooling device, a cyclone oil removal equipment, a desulfurization tower, a dust removal tower, a circulating water pool, a flake caustic soda tank, a lime slurry tank and an induced draft fan, the cyclone oil removal equipment is provided with a downward gas inlet pipeline at the upper end, the gas inlet pipeline is provided with the pipeline cooling device, the lower end of the bottom of the cyclone oil removal equipment is connected to the first gas inlet at the lower end of the desulfurization tower through an oil-water separation system, and the first gas outlet at the upper end of the desulfurization tower is connected to the second gas inlet at the lower end of the dust removal tower through a pipeline; the desulfurization tower is provided with multiple levels of spray devices arranged in an up-down mode, and the lower end of the desulfurization tower is connected to the circulating water pool; the second gas outlet at the upper end of the dust removal tower is connected to a chimney through a pipeline and the induced draft fan, the pipeline cooling device is connected to a cooling water tower, and the flake caustic soda tank is connected to the spray device; and the lime slurry tank is connected to the circulating water pool.

[0005] Further, the pipeline cooling device comprises an atomizing spray gun, and the atomizing spray gun sprays cooling water in the gas inlet pipeline.

[0006] Further, the oil-water separation system is connected to the circulating water pool through a water outlet, and connected to an oil storage barrel through an oil outlet.

[0007] Further, the spray device is provided with a plurality of spiral nozzles.

[0008] Further, the desulfurization tower is provided with a baffle demisting device at the upper end.

[0009] Further, the flake caustic soda tank and the lime slurry tank are provided with stirrers.

[0010] Further, the dust removal tower is a wet electrostatic precipitator.

[0011] Further, the wet electrostatic precipitator is provided with a first spray device at the upper end.

[0012] The solution provided by this utility model has the following advantages: simple structure, convenient installation and operation, and can effectively remove dust and desulfurize the flue gas of the annealing furnace with less pollution. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the present invention. Detailed Implementation

[0014] The embodiments of the present utility model will be described in detail below. These embodiments are only used to more clearly illustrate the technical solution of the present utility model, and are therefore merely examples and should not be used to limit the scope of protection of the present utility model.

[0015] Example 1, as shown in the attached document Figure 1 As shown, this utility model relates to a dust removal and desulfurization device for annealing furnace flue gas, including a pipeline cooling device, a cyclone oil removal device 1, a desulfurization tower 2, a dust removal tower 3, a circulating water pool 4, a caustic soda tank 5, a lime slurry tank 6, and an induced draft fan 7. The upper end of the cyclone oil removal device is provided with a downward-facing air inlet pipe 8, and the air inlet pipe is provided with a pipeline cooling device. The lower side of the cyclone oil removal device is connected to the first air inlet 9 on the lower side of the desulfurization tower through a pipeline. The lower end of the cyclone oil removal device is also connected to the circulating water pool 4 through an oil-water separation system 10. The first air outlet 11 at the upper end of the desulfurization tower is connected to the second air inlet 12 on the lower side of the dust removal tower through a pipeline. The desulfurization tower is provided with a multi-stage vertically arranged spray device 13, and the lower end of the desulfurization tower is connected to the circulating water pool. The second air outlet 14 at the upper end of the dust removal tower is connected to the chimney 15 through a pipeline and the induced draft fan 7. The pipeline cooling device is connected to a cooling water tower 16, and the caustic soda tank is connected to the spray device. The lime slurry tank is connected to the circulating water pool.

[0016] An annealing furnace flue gas dust removal and desulfurization device, wherein a pipe cooling device 19 is provided inside the upper part of the cyclone oil removal device.

[0017] An annealing furnace flue gas dust removal and desulfurization device includes a pipeline cooling device comprising an atomizing spray gun that sprays cooling water into the air inlet pipeline.

[0018] An annealing furnace flue gas dust removal and desulfurization device, wherein the water outlet of the oil-water separation system is connected to a circulating water tank, and the oil outlet of the oil-water separation system is connected to an oil storage tank.

[0019] An annealing furnace flue gas dust removal and desulfurization device, wherein the spray device is equipped with several spiral nozzles 17.

[0020] An annealing furnace flue gas dust removal and desulfurization device, wherein a baffle plate demister is provided at the upper end of the desulfurization tower.

[0021] An annealing furnace flue gas dust removal and desulfurization device, wherein an agitator 18 is provided in the caustic soda tank and the lime slurry tank.

[0022] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0023] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0024] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0025] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0026] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0027] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0028] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0029] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0030] The application discloses an annealing furnace flue gas dust removal and desulfurization device.

[0031] It should be finally pointed out that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. An annealing furnace flue gas dedusting and desulfurization device, comprising a pipeline cooling device, a cyclone oil removal equipment, a desulfurization tower, a dust removal tower, a circulating water pool, a caustic soda tank, a lime slurry tank and an induced draft fan, characterized in that: The cyclone oil removal equipment is provided with a downward air inlet pipe at the upper end, and a pipe cooling device is arranged in the air inlet pipe. The lower end of the bottom of the cyclone oil removal equipment is connected to the circulating water pool through an oil-water separation system, and the first air outlet at the upper end of the desulfurization tower is connected to the second air inlet at the lower end of the dust removal tower through a pipe.

2. The flue gas dedusting and desulfurizing device of an annealing furnace according to claim 1, characterized in that: The pipe cooling device comprises an atomizing spray gun, which sprays cooling water in the air inlet pipe.

3. The flue gas dedusting and desulfurizing device of an annealing furnace according to claim 1, characterized in that: The oil-water separation system is connected to the circulating water pool through the water outlet and to the oil storage barrel through the oil outlet.

4. The flue gas dedusting and desulfurizing device of an annealing furnace according to claim 1, characterized in that: A plurality of spiral nozzles are arranged on the spray device.

5. The flue gas dedusting and desulfurizing device of an annealing furnace according to claim 1, characterized in that: A baffle demisting device is arranged at the upper end in the desulfurization tower.

6. The flue gas dedusting and desulfurizing device of an annealing furnace according to claim 1, characterized in that: Stirrers are arranged in the flaked alkali tank and the lime slurry tank.

7. The flue gas dedusting and desulfurizing device of an annealing furnace according to claim 1, characterized in that: The dust removal tower is a wet electrostatic precipitator.

8. The flue gas dedusting and desulfurizing device of an annealing furnace according to claim 7, characterized in that: A first spray device is arranged at the upper end in the wet electrostatic precipitator.

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