A blast furnace pulverized coal waste gas treatment device

Abstract

This utility model discloses a blast furnace pulverized coal injection waste gas treatment device, relating to the field of waste gas treatment technology. It includes an inlet pipe, a connecting flange fixedly connected to one side of the outer surface of the inlet pipe, a regulating valve fixedly connected to one side of the connecting flange, a first connecting pipe fixedly connected to one end of the regulating valve, a high-temperature treatment component on one side of the first connecting pipe, a cooling component on one side of the inlet pipe, and a purification component on the side of the inlet pipe. This utility model, by setting up a high-temperature treatment component, allows the coarse grid plate installed in the pretreatment box to separate larger particle sizes in the waste gas. The separated large particle sizes enter the filter box where they are further filtered by ceramic fiber plates. Through the purification component, the filter bags in the waste gas intercept and filter the particulate matter, and finally, the activated carbon adsorption plate removes harmful gases and organic pollutants from the waste gas, improving the waste gas treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically to a waste gas treatment device for blast furnace pulverized coal injection. Background Technology

[0002] For half a century since its industrial and widespread application, pulverized coal injection for blast furnaces has seen its market demand gradually expand due to the increasing domestic steel production capacity and the continuous advancement and improvement of key technologies for pulverized coal injection. Pulverized coal injection, replacing a portion of coke, can save on coking investment, reduce the number of coke ovens, and decrease air pollution caused by coking; it can also significantly alleviate the tight supply and demand situation for coking coal. The proportion of pulverized coal in blast furnace injection has shown a year-on-year upward trend and is gradually becoming an indispensable raw material for steel enterprises. The waste gas generated during pulverized coal injection in blast furnaces needs to be treated to prevent environmental pollution.

[0003] Existing waste gas treatment equipment requires cleaning of the ash hopper and ash discharge valve after prolonged use due to the large amount of dust generated by blast furnaces. However, the disassembly and assembly of the ash hopper and ash discharge valve is not easy, and failure to clean them in a timely manner may affect the effectiveness of the waste gas treatment equipment.

[0004] As disclosed in Chinese Patent CN221999208U, an industrial blast furnace exhaust gas treatment device includes a housing and an installation mechanism. The installation mechanism includes a positioning groove, a placement groove, a placement column, a first spring, a positioning column, and a positioning hole. An ash hopper is fixedly connected to the lower surface of the housing, and a bracket is fixedly connected to the outer surface of the ash hopper. An ash discharge valve is engaged with the lower surface of the ash hopper, and an installation mechanism is provided on the upper surface of the ash discharge valve. A dust-laden gas inlet is opened on one side surface of the housing, a purified gas outlet is opened on one side surface of the housing, and a cleaning mechanism is provided on the inner surface of the housing.

[0005] When treating blast furnace exhaust gas, the aforementioned equipment mainly filters the dust in the exhaust gas. The exhaust gas produced by the blast furnace also contains acidic gases, harmful gases, and organic pollutants. In addition to dust treatment, other substances also need to be cleaned to improve the exhaust gas treatment effect. At present, most exhaust gas treatment equipment uses a single gas filtration method for cleaning, which results in low cleaning efficiency, and the high temperature of some gases can affect the treatment effect.

[0006] Therefore, a blast furnace pulverized coal waste gas treatment device is proposed to solve the above problems. Utility Model Content

[0007] The purpose of this utility model is to provide a blast furnace pulverized coal waste gas treatment device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0009] A blast furnace pulverized coal waste gas treatment device includes an inlet pipe, a connecting flange fixedly connected to one side of the outer surface of the inlet pipe, a regulating valve fixedly connected to one side of the connecting flange, a first connecting pipe fixedly connected to one end of the regulating valve, a high-temperature treatment component provided on one side of the first connecting pipe, a cooling component provided on one side of the inlet pipe, and a purification component provided on the side of the inlet pipe.

[0010] Furthermore, the high-temperature treatment assembly includes a pretreatment box fixedly installed on one end surface of the first connecting pipe, a disassembly base plate snapped into the bottom surface of the pretreatment box, a coarse grid plate fixedly installed on the inner wall of the pretreatment box, a second connecting pipe fixedly connected to one end surface of the pretreatment box, a filter box fixedly installed on the other end surface of the second connecting pipe, a first snap-fit ​​side plate snapped into one side of the inner wall of the filter box, and multiple ceramic fiber plates provided on the inner wall of the filter box.

[0011] Furthermore, the cooling assembly includes a No. 3 connecting pipe fixedly installed on one end surface of the filter box, a cooling box fixedly installed on one end surface of the No. 3 connecting pipe, a coolant tank fixedly installed on one side of the outer surface of the cooling box, an inlet pipe fixedly installed on the upper left side of one side of the outer surface of the coolant tank, an outlet pipe fixedly installed on the lower right side of the other side of the outer surface of the cooling box, and a cooling pipe fixedly connected to the upper surface of the coolant tank.

[0012] Furthermore, the purification assembly includes a No. 4 connecting pipe fixedly installed on one end surface of the cooling box, a purification box fixedly installed on the other end surface of the No. 4 connecting pipe, a No. 2 snap-fit ​​side plate snapped onto one side of the inner wall of the purification box, a filter bag frame fixedly installed on one side of the inner wall of the purification box, and a filter bag fixedly installed on the inner wall of the filter bag frame, an activated carbon adsorption plate installed on the other side of the inner wall of the purification box, and an exhaust fan fixedly installed on the other side of the outer surface of the purification box, with a fan component installed inside the exhaust fan.

[0013] Furthermore, the cooling pipes are distributed at equal intervals on the upper surface of the coolant tank, and the outer surface of the cooling pipes is in contact with the outer surface of the cooling tank, with the cooling pipes wrapped around the outer surface of the cooling tank.

[0014] Furthermore, the intake pipe, connecting pipe No. 1, connecting pipe No. 2, connecting pipe No. 3, and connecting pipe No. 4 are made of stainless steel and have an anti-corrosion coating on their inner walls.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention, by setting up a high-temperature treatment component, allows the coarse grid plate installed in the pretreatment box to separate larger particles in the exhaust gas. The separated large particles then enter the filter box for further filtration by ceramic fiber plates. At this point, the high-temperature exhaust gas enters the cooling box where a cooling component cools it down, preventing the high-temperature exhaust gas from affecting subsequent treatment components. By setting up a purification component, the filter bags in the exhaust gas intercept and filter the particles, and finally, the activated carbon adsorption plate removes harmful gases and organic pollutants from the exhaust gas, thereby improving the exhaust gas treatment effect. Attached Figure Description

[0017] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the high-temperature processing component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the cooling component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the purification component structure of this utility model.

[0021] Reference numerals: 1. Inlet pipe; 2. Connecting flange; 3. Regulating valve; 4. High-temperature treatment assembly; 401. Connecting pipe No. 1; 402. Pretreatment box; 403. Disassembly base plate; 404. Coarse grid plate; 405. Connecting pipe No. 2; 406. Filter box; 407. Snap-on side plate No. 1; 408. Ceramic fiber board; 5. Cooling assembly; 501. Connecting pipe No. 3; 502. Cooling box; 503. Coolant tank; 504. Inlet pipe; 505. Outlet pipe; 506. Cooling pipe; 6. Purification assembly; 601. Connecting pipe No. 4; 602. Purification box; 603. Snap-on side plate No. 2; 604. Filter bag frame; 605. Filter bag; 606. Activated carbon adsorption plate; 607. Exhaust fan; 608. Fan component. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figure 1-4 As shown, a blast furnace pulverized coal injection waste gas treatment device includes an inlet pipe 1. A connecting flange 2 is fixedly connected to one side of the outer surface of the inlet pipe 1, and a regulating valve 3 is fixedly connected to one side of the connecting flange 2. One end of the regulating valve 3 is fixedly connected to a first connecting pipe 401. A high-temperature treatment component 4 is installed on one side of the first connecting pipe 401, a cooling component 5 is installed on one side of the inlet pipe 1, and a purification component 6 is installed on the side of the inlet pipe 1. The waste gas flow rate is relatively large. The regulating valve 3 can regulate the flow rate of waste gas entering the inlet pipe 1 to ensure that the waste gas enters the treatment device smoothly. The high-temperature treatment component 4 performs preliminary treatment on the waste gas, then the cooling component 5 cools the waste gas, and finally the purification component 6 performs final purification treatment on the waste gas, thereby improving the treatment effect.

[0028] The high-temperature treatment component 4 includes a pretreatment box 402 fixedly installed on one end of a first connecting pipe 401. A disassembly base plate 403 is snapped into the bottom surface of the pretreatment box 402. A coarse grid plate 404 is fixedly installed on the inner wall of the pretreatment box 402. A second connecting pipe 405 is fixedly connected to one end of the pretreatment box 402. A filter box 406 is fixedly installed on the other end of the second connecting pipe 405. A first snap-fit ​​side plate 407 is snapped into one side of the inner wall of the filter box 406. Multiple ceramic fiber plates 408 are arranged on the inner wall of the filter box 406. The ceramic fiber plates 408 are used as the first layer of filtration to remove larger particles in the exhaust gas. When the ceramic fiber plates 408 need to be replaced, they can be removed and replaced by disassembling the first snap-fit ​​side plate 407.

[0029] The cooling assembly 5 includes a No. 3 connecting pipe 501 fixedly installed on one end surface of the filter box 406. A cooling box 502 is fixedly installed on one end surface of the No. 3 connecting pipe 501. A coolant tank 503 is fixedly installed on one side of the outer surface of the cooling box 502. An inlet pipe 504 is fixedly installed on the upper left side of one side of the outer surface of the coolant tank 503. An outlet pipe 505 is fixedly installed on the lower right side of the other side of the outer surface of the cooling box 502. A cooling pipe 506 is fixedly connected to the upper surface of the coolant tank 503. The exhaust gas after being treated by the ceramic fiber board 408 is cooled. The cooled exhaust gas will not affect the materials for subsequent filtration, thus improving the treatment efficiency.

[0030] The purification component 6 includes a No. 4 connecting pipe 601 fixedly installed on one end surface of the cooling box 502, and a purification box 602 fixedly installed on the other end surface of the No. 4 connecting pipe 601. A No. 2 snap-fit ​​side plate 603 is snapped onto one side of the inner wall of the purification box 602. A filter bag frame 604 is fixedly installed on one side of the inner wall of the purification box 602, and a filter bag 605 is fixedly installed on the inner wall of the filter bag frame 604. An activated carbon adsorption plate 606 is installed on the other side of the outer surface of the purification box 602. An exhaust fan 607 is fixedly installed on the other side of the outer surface of the purification box 602, and a fan component 608 is provided inside the exhaust fan 607. The filter bag frame 604 and filter bag 605 installed on one side of the inner wall of the purification box 602 can filter the cooled exhaust gas. The filter bag 605 can remove particulate matter in the exhaust gas, and the activated carbon adsorption plate 606 installed on one side of the inner wall of the purification box 602 can remove harmful gases and organic pollutants in the exhaust gas.

[0031] Cooling pipes 506 are distributed at equal intervals on the upper surface of the coolant tank 503, and the outer surface of the cooling pipes 506 is in contact with the outer surface of the cooling box 502. The cooling pipes 506 are wrapped around the outer surface of the cooling box 502. The cooling pipes 506 are wrapped around the outer surface of the cooling box 502 to surround the cooling box 502 and improve the cooling efficiency of the exhaust gas passing through the cooling box 502.

[0032] Inlet pipe 1, connecting pipe 401, connecting pipe 405, connecting pipe 501, and connecting pipe 601 are made of stainless steel and have an anti-corrosion coating on their inner walls. The anti-corrosion coating on the inner walls of each pipe can effectively reduce the corrosion of the pipes by acidic gases in the exhaust gas and improve the service life of the pipes.

[0033] In summary, this blast furnace pulverized coal injection waste gas treatment equipment connects the inlet pipe 1 to the blast furnace waste gas outlet. The exhaust fan 607 draws the waste gas into the inlet pipe 1. After the waste gas enters the inlet pipe 1, to ensure treatment effectiveness, the regulating valve 3 is operated to adjust the flow rate of the waste gas in the pipe, allowing the waste gas to smoothly enter the treatment device. The waste gas enters the pretreatment box 402 through the first connecting pipe 401. The coarse grid plate 404 installed in the pretreatment box 402 partially separates larger particles in the waste gas. The separated waste gas enters the filter box 406 through the second connecting pipe 405. Multiple ceramic fiber plates 408 installed on the inner wall of the filter box 406 filter the waste gas. The treated waste gas then enters the third connecting pipe... 501 reaches the cooling box 502. At this time, the inlet pipe 504 injects coolant into the coolant tank 503. The built-in pump in the coolant tank 503 injects coolant into the cooling pipe 506 to cool the cooling box 502, thereby cooling the exhaust gas passing through the cooling box 502. The cooled exhaust gas enters the fourth connecting pipe 601 and reaches the purification box 602. The filter bag frame 604 and filter bag 605 installed on the inner wall of the purification box 602 first filter the exhaust gas again. The filter bag 605 intercepts the particulate matter in the exhaust gas. The exhaust gas passing through the filter bag 605 is filtered by the activated carbon adsorption plate 606 to remove harmful gases and organic pollutants in the exhaust gas before being discharged through the exhaust fan 607.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A blast furnace pulverized coal waste gas treatment device, comprising an inlet pipe (1), wherein a connecting flange (2) is fixedly connected to one side of the outer surface of the inlet pipe (1), and a regulating valve (3) is fixedly connected to one side of the connecting flange (2), wherein a first connecting pipe (401) is fixedly connected to one end of the regulating valve (3), characterized in that: A high-temperature treatment component (4) is provided on one side of the first connecting pipe (401), a cooling component (5) is provided on one side of the air inlet pipe (1), and a purification component (6) is provided on the side of the air inlet pipe (1).

2. The blast furnace pulverized coal injection waste gas treatment equipment according to claim 1, characterized in that: The high-temperature treatment component (4) includes a pretreatment box (402) fixedly installed on one end surface of a first connecting pipe (401). A disassembly base plate (403) is snapped into the bottom surface of the pretreatment box (402). A coarse grid plate (404) is fixedly installed on the inner wall of the pretreatment box (402). A second connecting pipe (405) is fixedly connected to one end surface of the pretreatment box (402). A filter box (406) is fixedly installed on the other end surface of the second connecting pipe (405). A first snap-fit ​​side plate (407) is snapped into one side of the inner wall of the filter box (406). A plurality of ceramic fiber plates (408) are provided on the inner wall of the filter box (406).

3. The blast furnace pulverized coal injection waste gas treatment equipment according to claim 1, characterized in that: The cooling assembly (5) includes a No. 3 connecting pipe (501) fixedly installed on one end surface of the filter box (406). A cooling box (502) is fixedly installed on one end surface of the No. 3 connecting pipe (501). A coolant tank (503) is fixedly installed on one side of the outer surface of the cooling box (502). An inlet pipe (504) is fixedly installed on the upper left side of one side of the outer surface of the coolant tank (503). An outlet pipe (505) is fixedly installed on the lower right side of the other side of the outer surface of the cooling box (502). A cooling pipe (506) is fixedly connected to the upper surface of the coolant tank (503).

4. The blast furnace pulverized coal injection waste gas treatment equipment according to claim 1, characterized in that: The purification component (6) includes a No. 4 connecting pipe (601) fixedly installed on one end surface of the cooling box (502), and a purification box (602) fixedly installed on the other end surface of the No. 4 connecting pipe (601). A No. 2 snap-fit ​​side plate (603) is snapped onto one side of the inner wall of the purification box (602). A filter bag frame (604) is fixedly installed on one side of the inner wall of the purification box (602), and a filter bag (605) is fixedly installed on the inner wall of the filter bag frame (604). An activated carbon adsorption plate (606) is installed on the other side of the inner wall of the purification box (602). An exhaust fan (607) is fixedly installed on the other side of the outer surface of the purification box (602), and a fan component (608) is provided inside the exhaust fan (607).

5. The blast furnace pulverized coal injection waste gas treatment equipment according to claim 3, characterized in that: The cooling pipes (506) are distributed at equal intervals on the upper surface of the coolant tank (503), and the outer surface of the cooling pipes (506) is in contact with the outer surface of the cooling box (502). The cooling pipes (506) are wrapped around the outer surface of the cooling box (502).

6. The blast furnace pulverized coal injection waste gas treatment equipment according to claim 1, characterized in that: The air intake pipe (1), the first connecting pipe (401), the second connecting pipe (405), the third connecting pipe (501), and the fourth connecting pipe (601) are made of stainless steel and have an anti-corrosion coating on their inner walls.

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