CN210855986U - A device for reducing sulfur dioxide emission in coke oven charging process - Google Patents

Abstract

The utility model relates to a device for reducing sulfur dioxide emission in the coal charging process of a coke oven, which comprises an air curtain device respectively arranged at a machine side oven door and a coke side oven door; at least one side of the oven door frame of the oven side door and the oven side door of the coke oven is provided with an air curtain air outlet along the height direction at one side facing the center of the carbonization chamber, and the air curtain is formed by blowing air from the air curtain air outlet to completely separate the inner space of the carbonization chamber from the external atmospheric environment. The utility model discloses can avoid or reduce coke oven and go out external air admission carbomorphism room in the burnt process to keep being anaerobic or oxygen deficiency environment in the carbomorphism room, thereby go into the burning of the oxygen emergence burning and produce SO that coal and carbomorphism indoor persistence when avoiding the coal charge₂Avoiding SO from the source₂The pollution to the environment caused by excessive discharge is avoided, and the environmental protection level in the coking production process is improved.

Description

A device for reducing sulfur dioxide emission in coke oven charging process

technical field

The utility model relates to the technical field of coke oven fume and dust control, in particular to a device for reducing sulfur dioxide emission in a coke oven coal charging process.

Background technique

In the process of charging coal to the coke oven, a large amount of smoke and dust will be generated instantaneously in the carbonization chamber. Due to the coke pushing operation of the coking chamber before coal loading, the coke oven coking chamber has undergone the process of picking the door, pushing the coke, and closing the furnace door. During the period of picking the door and closing the furnace door, the carbonization chamber is connected to the atmosphere, and the air outside the carbonization chamber will enter Carbonized indoors. When the coal is charged into the carbonization chamber, the coal will have a combustion reaction with the oxygen in the air entering the carbonization chamber during the opening of the carbonization chamber under a high temperature environment. Since the coal contains sulfur, a certain amount of SO ₂ will be generated during combustion. Part of the generated SO ₂ enters the coal charging dust removal system along with the coal charging dust during coal charging, which causes the SO ₂ at the discharge port of the coal charging dust removal system to exceed the relevant environmental protection standard limit.

For SO ₂ discharged through the coke oven coal charging dust removal system during the coal charging process, due to the instantaneous intermittent occurrence of coal charging dust, the stable and efficient desulphurization of the dust has caused inevitable difficulties, and the construction and operation of the desulphurization facilities require investment from enterprises Certain funds are guaranteed. Therefore, the best solution is to control the production of _SO2 at the source.

SUMMARY OF THE INVENTION

The utility model provides a device for reducing sulfur dioxide emission in a coke oven charging process. By arranging air curtain devices at the furnace door of the machine side and the furnace door of the coke side, the outside air can be prevented or reduced from entering the carbonization chamber during the coking process of the coke oven. , so as to keep the carbonization chamber in an oxygen-free or oxygen-deficient environment, so as to avoid the combustion of the coal into the furnace and the oxygen remaining in the carbonization chamber during coal charging to generate SO ₂ , avoid the pollution of the environment caused by excessive SO ₂ emission from the source, and improve the coking production. Environmental level of the process.

In order to achieve the above object, the utility model adopts the following technical solutions to realize:

A device for reducing sulfur dioxide emissions in a coke oven charging process, comprising air curtain devices respectively installed at a machine side furnace door and a coke side furnace door; the machine side furnace door of a coke oven and the furnace door frame of the coke side furnace door have at least one side On the side facing the center of the carbonization chamber, an air curtain air outlet is arranged in a high direction, and the gas is blown out from the air curtain air outlet to form an air curtain that completely separates the interior space of the carbonization chamber from the external atmospheric environment.

The furnace door on the machine side and the furnace door on the coke side are provided with an air curtain air outlet, and an air curtain air outlet box is embedded in the inner side of the corresponding side furnace door frame, and the outer edge line of the air curtain air outlet box is flush with the edge line of the corresponding part of the furnace door frame. ; The side of the air curtain air box facing the center of the carbonization chamber is provided with an air curtain air outlet along the height direction, and the other side of the air curtain air outlet box is provided with an air box air inlet, and the air box air inlet is connected to the high-speed air generating device through the air inlet pipe. .

The shape of the opening of the air curtain air outlet is a trapezoid, that is, its width continuously changes from small to large from top to bottom.

The high-speed wind generating device is composed of a fan and an air inlet duct, the fan is connected to the air box air inlet of the air curtain air outlet box through the air inlet duct, and the fan is driven by a high-speed motor.

The furnace door frame on the side of the machine side furnace door and the coke side furnace door without the air curtain air outlet is provided with a deflector or an air curtain air inlet.

The guide plate is arranged on the inner side of the corresponding side furnace door frame, and is arranged symmetrically with the air curtain air outlet along the center line of the carbonization chamber;

The air curtain air inlet is arranged on the air curtain air inlet box embedded in the inner side of the corresponding side furnace door frame. The air curtain air inlet is arranged symmetrically with the air curtain air outlet along the center line of the carbonization chamber. The shape of the air outlet is the same, and the width of the air curtain air inlet is greater than or equal to the width of the air curtain outlet air of the corresponding height.

The outer edge line of the air curtain air inlet box is flush with the edge line of the corresponding part of the furnace door frame; the air curtain air inlet box is provided with an air box air outlet, which is connected to an external gas collection device or communicated with the external atmosphere through an air outlet pipe.

Compared with the prior art, the beneficial effects of the present utility model are:

1) Due to the existence of the temperature difference between the inside and outside of the carbonization chamber, a certain pressure differential gradient will be formed on the plane of the furnace mouth along the height direction of the carbonization chamber. A gas curtain with increasing strength from top to bottom is formed on the plane of the furnace mouth along the height of the carbonization chamber, which can effectively balance the pressure difference caused by the temperature difference between inside and outside, prevent the outside air from entering the carbonization chamber, and form an oxygen-free gas in the carbonization chamber. or oxygen-deficient environment, so as to avoid the combustion of the coal into the furnace and the oxygen remaining in the carbonization chamber during coal charging to generate SO ₂ , solve the problem of excessive SO ₂ emission pollution in the coal dust from the source, and improve the environmental protection level of the coking production process;

2) The use of an air curtain to effectively isolate the carbonization chamber from the outside can avoid or reduce the phenomenon that the temperature in the carbonization chamber is lowered due to the opening of the furnace openings on both sides of the carbonization chamber and the entry of cold air into the carbonization chamber during the coking operation, which not only reduces the effectiveness of the coke oven The loss of heat can improve the energy efficiency of coke oven production, and can also effectively protect the masonry in the carbonization chamber, improve the service life of the masonry, and reduce the leakage rate of the furnace wall of the carbonization chamber.

Description of drawings

FIG. 1 is a schematic structural diagram 1 of a device for reducing sulfur dioxide emissions in a coke oven charging process according to the present invention.

FIG. 2 is a schematic structural diagram 1 of a device for reducing sulfur dioxide emissions in a coke oven charging process according to the present invention.

FIG. 3 is an A-A view in FIG. 1 .

In the picture: 1. Carbonization chamber 2. Furnace column 3. Furnace door frame 4. Protection plate 5. Air curtain air box 6. Guide plate 7. Air curtain air inlet box 8. Air curtain air outlet

Detailed ways

The specific embodiments of the present utility model will be further described below in conjunction with the accompanying drawings:

As shown in Figure 1 and Figure 2, a device for reducing sulfur dioxide emissions in a coke oven charging process described in the present invention includes air curtain devices installed at the machine side furnace door and the coke side furnace door respectively; At least one side of the furnace door frame 3 of the side furnace door and the coke side furnace door is provided with a gas curtain air outlet 8 along the height direction on the side facing the center of the carbonization chamber 1. The space is completely isolated from the external atmospheric environment.

The furnace door on the machine side and the furnace door on the coke side are provided with the air curtain air outlet 8 corresponding to the side furnace door frame 3 and the air curtain air outlet box 5 is embedded in the inner side, and the outer edge line of the air curtain air outlet box 5 corresponds to the part of the furnace door frame 3. The edge line of the air curtain is flush; the side of the air curtain air box 5 facing the center of the carbonization chamber 1 is provided with an air curtain air outlet 8 along the height direction, and the other side of the air curtain air box 5 is provided with an air box air inlet, and the air box air inlet Connect the high-speed wind generating device through the air inlet duct.

As shown in FIG. 3 , the shape of the opening of the air curtain air outlet 8 is a trapezoid, that is, the width of the opening continuously changes from small to large from top to bottom.

The high-speed wind generating device is composed of a fan and an air inlet duct. The fan is connected to the air box air inlet 8 of the air curtain air outlet box 5 through the air inlet duct, and the fan is driven by a high-speed motor.

The furnace door frame 3 on the side of the machine side furnace door and the coke side furnace door without the air curtain air outlet 8 is provided with a deflector 6 or an air curtain air inlet.

The guide plate 6 is arranged on the inner side of the corresponding side furnace door frame 3, and is arranged symmetrically with the air curtain air outlet 8 along the center line of the carbonization chamber 1; 1 The direction of the center line is inclined.

The air curtain air inlet is arranged on the air curtain air inlet box 7 embedded in the inner side of the corresponding side furnace door frame 3, and the air curtain air inlet is arranged symmetrically with the air curtain air outlet 8 along the center line of the carbonization chamber 1, and the shape of the air curtain air inlet is symmetrical. Consistent with the shape of the air curtain air outlet 8, the width of the air curtain air inlet is greater than or equal to the width of the air curtain outlet air 8 corresponding to the height.

The outer edge line of the air curtain air inlet box 7 is flush with the edge line of the corresponding part of the furnace door frame 3; the air curtain air inlet box 7 is provided with an air box air outlet, which is connected to an external gas collection device or an external gas collection device through an air outlet pipe. Atmospheric connectivity.

The working process of the device for reducing the sulfur dioxide emission in the coke oven charging process described in the utility model is as follows:

1) Take off the machine-side furnace door and coke-side furnace door of coke oven carbonization chamber 1, put the coke pusher and coke blocking machine in place, and start the air curtain device arranged on the machine side of carbonization chamber 1 before preparing for the coke pushing operation;

2) During the process of pushing the coke in the carbonization chamber 1 out of the carbonization chamber 1 by the coke pusher, the high-speed airflow generated by the high-speed wind generating device is distributed by the air curtain air outlet box 5 and blown out from the air curtain air outlet 8, and the high-speed air flow is blown out along the vertical direction. The direction of the center line of the carbonization chamber 1 flows through the furnace mouth of the carbonization chamber 1 to the furnace door frame 3 on the other side, and an air curtain is formed on the open surface of the entire furnace mouth of the machine side, which completely isolates the inner space of the carbonization chamber 1 from the outside of the carbonization chamber 1; After the high-speed airflow reaches the furnace door frame 3 on the other side, it flows out of the carbonization chamber 1 under the action of the deflector 6, that is, away from the furnace mouth on the side of the machine; The outlet of the air box is exported;

3) When the coke trapping machine completes the coke trapping operation, start the air curtain device arranged on the coke side of the carbonization chamber 1, and form an air curtain on the open surface of the entire furnace mouth on the coke side, so that the inner space of the carbonization chamber 1 and the outside of the carbonization chamber 1 are completely separated. Isolation; its process and principle are the same as step 2);

4) When the coking operation is completed, the machine-side furnace door and the coke-side furnace door are re-installed in place to close the machine-side and coke-side furnace openings of carbonization chamber 1, and then close the air curtain devices on the machine-side and coke-side of carbonization chamber 1.

The two sides of the coke oven carbonization chamber are respectively provided with a machine side furnace door and a coke side furnace door. The machine side furnace door or the coke side furnace door are respectively set on the furnace door frame on the corresponding side. Protection board. In the present utility model, the air curtain air box 5, the air curtain air inlet box 7 and the guide plate 6 are all embedded on the corresponding furnace door frame 3, and the guide plate 6 is used for the gas ejected from the air curtain air outlet 8. Lead away from the carbonization chamber 1 to prevent the gas from entering the interior of the carbonization chamber 1. The air curtain air inlet box 7 is used to collect the gas ejected from the air curtain air outlet 8 through the air curtain air inlet and guide it to the external gas collection device for recycling after treatment. , or directly into the atmosphere.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (8)

1. A device for reducing sulfur dioxide emission in the coal charging process of a coke oven is characterized by comprising air curtain devices which are respectively arranged at a machine side oven door and a coke side oven door; at least one side of the oven door frame of the oven side door and the oven side door of the coke oven is provided with an air curtain air outlet along the height direction at one side facing the center of the carbonization chamber, and the air curtain is formed by blowing air from the air curtain air outlet to completely separate the inner space of the carbonization chamber from the external atmospheric environment.

2. The device for reducing the emission of sulfur dioxide in the coal charging process of the coke oven as claimed in claim 1, wherein the inner sides of the corresponding side oven door frames of the oven side oven door and the oven side oven door provided with the air curtain air outlets are embedded with air curtain air outlet boxes, and the outer edge lines of the air curtain air outlet boxes are flush with the edge lines of the corresponding parts of the oven door frames; one side of the air curtain air outlet box, which faces the center of the carbonization chamber, is provided with an air curtain air outlet along the height direction, the other side of the air curtain air outlet box is provided with an air box air inlet, and the air box air inlet is connected with a high-speed air generating device through an air inlet pipeline.

3. The device for reducing the emission of sulfur dioxide in the coal charging process of the coke oven as claimed in claim 1, wherein the opening shape of the air curtain air outlet is trapezoidal, i.e. the opening width of the air curtain air outlet continuously changes from small to large from top to bottom.

4. The device for reducing the emission of sulfur dioxide in the coal charging process of the coke oven as claimed in claim 2, wherein the high-speed air generating device is composed of a fan and an air inlet pipeline, the fan is connected with the air inlet of the air box of the air curtain air outlet box through the air inlet pipeline, and the fan is driven by a high-speed motor.

5. The apparatus of claim 1, wherein the side door frame of the coke oven side door without the air curtain outlet is provided with a deflector or an air curtain inlet.

6. The device for reducing the emission of sulfur dioxide during the coal charging process of the coke oven as claimed in claim 5, wherein the guide plate is arranged at the inner side of the door frame of the corresponding side oven and symmetrically arranged with the air curtain air outlet along the central line of the carbonization chamber; the guide plate is integrally arranged in an inclined manner, and one end of the guide plate facing the carbonization chamber inclines towards the direction of the central line of the carbonization chamber.

7. The device for reducing the emission of sulfur dioxide during the coal charging process of the coke oven as claimed in claim 5, wherein the air curtain air inlet is arranged on an air curtain air inlet box embedded on the inner side of the corresponding side oven door frame, the air curtain air inlet and the air curtain air outlet are symmetrically arranged along the center line of the carbonization chamber, the shape of the air curtain air inlet is consistent with that of the air curtain air outlet, and the width of the air curtain air inlet is greater than or equal to that of the air curtain outlet air with the corresponding height.

8. The apparatus of claim 7, wherein the outer edge line of the air curtain inlet box is flush with the edge line of the corresponding portion of the oven door frame; an air box air outlet is arranged on the air curtain air inlet box and is connected with an external gas collecting device or communicated with external atmosphere through an air outlet pipeline.

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