Kiln flue gas desulfurization and denitrification device

Abstract

The utility model discloses a flue gas desulfurization and denitrification device for a kiln, which belongs to the technical field of flue gas treatment and comprises a shell mechanism and a bearing mechanism, a feeding mechanism is welded at the top end of the shell mechanism, the bearing mechanism is movably arranged in the shell mechanism, and the feeding mechanism is welded at the top end of the bearing mechanism. A pushing mechanism is slidably connected to the outer wall of the shell mechanism, and a spraying mechanism is fixedly welded to the top wall of the shell mechanism. Through the arrangement of the shell mechanism, the feeding mechanism, the bearing mechanism and the pushing mechanism, a worker can conveniently and rapidly discharge filler in the device and add new filler to each layer, the maintenance efficiency of the device is effectively improved, and through the arrangement of the bearing mechanism, the spraying mechanism, the filler layers and the UV purifier, the maintenance efficiency is improved. The device can continuously perform desulfurization reaction during the working period, so that the device can fully perform desulfurization and denitrification without generating waste water, and the practicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to a desulfurization and denitrification device for kiln flue gas. Background Technology

[0002] A kiln is a thermal device used in industrial production to calcine materials at high temperatures. It is widely used in industries such as ceramics, cement, and glass. When a kiln is in operation, it produces kiln flue gas, which contains pollutants such as dust, sulfur dioxide, and nitrogen oxides. If directly emitted, it will seriously pollute the atmosphere. In order to avoid kiln flue gas from polluting the atmosphere, manufacturers often desulfurize and denitrify the flue gas before releasing it.

[0003] In existing desulfurization and denitrification processes, desulfurization is mainly carried out by spraying through desulfurization and denitrification towers. Such desulfurization and denitrification devices often lack convenient discharge mechanisms. When replacing the packing, workers often need to use tools to repeatedly reach into the device from the discharge port to remove the packing from the inside of the device. The discharge process is very cumbersome and time-consuming, which not only wastes manpower but also affects the progress of waste gas treatment operations. Furthermore, there is the problem that aged packing is difficult to remove completely.

[0004] Therefore, there is an urgent need to provide a desulfurization and denitrification device for kiln flue gas to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a desulfurization and denitrification device for kiln flue gas.

[0006] To solve the above-mentioned technical problems, the present invention provides a kiln flue gas desulfurization and denitrification device, including a shell mechanism and a support mechanism. A feeding mechanism is welded to the top of the shell mechanism, a support mechanism is movably arranged inside the shell mechanism, and a pushing mechanism is slidably connected to the outer wall of the shell mechanism.

[0007] A spraying mechanism is welded and fixed to the top wall of the shell structure;

[0008] The interior of the housing is filled with a filler layer, and a UV purifier is also sealed to the top of the housing.

[0009] The present invention is further configured such that: the housing mechanism includes a housing body, three discharge gates are hinged to the side wall of the housing body, an air outlet is opened at the bottom end of the housing body, a support leg is welded and fixed at the bottom end of the housing body, a sliding sleeve is integrally fixed to the outer wall of the housing body, and three support rings are welded and fixed to the inner wall of the housing body.

[0010] Through the above technical solution, the shell body is made of stainless steel, which has the characteristics of high temperature resistance and corrosion resistance, and the discharge gate and support ring are both arranged vertically.

[0011] The present invention is further configured such that: the feeding mechanism includes a top-level feeding port welded and fixed to the top wall of the housing body, and the feeding mechanism also includes a bottom-level feeding port and a middle-level feeding port welded and fixed to the top wall of the housing body.

[0012] With the above technical solution, the top feed inlet, bottom feed inlet and middle feed inlet are all equipped with matching sealing caps. The top feed inlet, bottom feed inlet and middle feed inlet are all hollow cylindrical structures. The top feed inlet is the shortest, the bottom feed inlet is the longest, and the bottom feed inlet is the longest. The staff can add filler to the inside of the device through the above feed inlets.

[0013] The present invention is further configured such that: the supporting mechanism includes a top support plate movably disposed at the top of the support ring, the top support plate has multiple hollow slots, the top support plate also has multiple protruding ridges integrally fixed thereon, and the top support plate also has a feeding groove.

[0014] Through the above technical solution, the top support plate is made of stainless steel and is set at an angle, with its lower end flush with the bottom of the discharge gate. The perforated slots are distributed in an equidistant array to allow airflow. Multiple protruding ribs are provided, located between two adjacent rows of perforated slots, and their direction is the same as the inclination direction of the top support plate. This effectively prevents the filler from directly contacting the perforated slots and reduces the support area between the filler and the top support plate, thereby reducing the sliding friction of the top support plate. When the operator opens the discharge gate, the filler will slide out of the discharge gate under the action of gravity. There are two feed channels, which can be used for the middle layer feed port and the bottom layer feed port, respectively.

[0015] The present invention is further configured such that: the supporting mechanism further includes a middle supporting plate movably disposed on the inner wall of the shell body, and the supporting mechanism includes a bottom supporting plate movably disposed on the inner wall of the shell body.

[0016] Through the above technical solution, the middle and bottom support plates are equipped with the same hollow slots and convex ridges as the top support plate. Each of the top, middle, and bottom support plates has a packing layer composed of numerous adsorption block packing materials. The raw materials for these adsorption blocks are magnesium oxide, magnesium chloride, penetrant, and foaming agent. These materials are cured to form topological polymer inorganic compound adsorption blocks with a porous surface. When waste gas passes through the packing layer, magnesium oxide and magnesium carbonate catalyze the adsorption and oxidation reaction between oxygen and sulfur compounds, producing sulfur trioxide. Sulfur trioxide has high oxidizing properties, so under its oxidation, nitrogen oxides in the waste gas are oxidized to high-valence nitrogen compounds. For example, under the catalytic oxidation of sulfur trioxide, dinitrogen pentoxide is produced. This compound rapidly reacts with water in the waste gas to produce nitrates. The nitrates are rapidly adsorbed into the porous inorganic molecules of topological magnesium oxide, achieving rapid desulfurization and denitrification. The middle support plate has a feed channel for the bottom feed inlet, facilitating the filling of the bottom packing layer by workers.

[0017] The present invention is further configured such that: the pushing mechanism includes a sliding rod slidably disposed inside the sliding sleeve, one end of the sliding rod is fixed with a handle, the other end of the sliding rod is fixed with a push plate, and a protective pad is adhered to the push plate.

[0018] With the above technical solution, three sliding sleeves are provided and vertically distributed. The push plate is parallel to the support plate. After the device discharges the packing, the operator can grasp the handle and push it several times. At this time, the sliding rod and push plate will push the support plate, thereby continuously striking and lifting the top of the support plate. The kinetic energy generated can shake off the packing on the support plate, making the device more convenient and thorough in discharging the packing. Each packing layer can be discharged and fed separately, making the replacement of the packing more flexible.

[0019] The present invention is further configured such that: the spraying mechanism includes a plurality of spray pipes welded and fixed to the top wall of the housing body, a nozzle is fixed to the bottom end of the spray pipe, an annular tube is sealed and welded to the top end of the spray pipe, and an inlet pipe is sealed and connected to the annular tube.

[0020] With the above technical solution, pressurized activation water is connected to the inlet pipe. The activation water is transported to the nozzle through the ring pipe and the spray pipe and sprayed onto the surface of the packing layer. The activation water reacts with the magnesium oxide in the adsorption block to generate magnesium hydroxide that can be used for desulfurization, making the desulfurization reaction of the device more complete. Only a small amount of activation water needs to be injected intermittently to generate enough magnesium hydroxide. As the reaction proceeds, the water body will be consumed. Therefore, no wastewater will be generated during the desulfurization process of this device.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. The present invention, through the arrangement of the shell mechanism, feeding mechanism, supporting mechanism and pushing mechanism, enables the staff to conveniently and quickly discharge the filler in the device and add new filler to each layer, effectively improving the maintenance efficiency of the device;

[0023] 2. By incorporating a support mechanism, a spraying mechanism, a packing layer, and a UV purifier, this utility model enables the device to continuously undergo desulfurization reactions during operation, thereby ensuring thorough desulfurization and denitrification without generating wastewater, thus improving the device's practicality. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a first-view structural diagram of the three-dimensional cross-section of this utility model;

[0026] Figure 3 This is a two-dimensional cross-sectional view of the present invention from a second perspective.

[0027] Figure 4 This is a partial structural diagram of the support mechanism of this utility model;

[0028] Figure 5 This is a structural diagram of the propulsion mechanism of this utility model;

[0029] Figure 6 This is a structural diagram of the spraying mechanism of this utility model.

[0030] In the diagram: 1. Shell structure; 101. Shell body; 102. Discharge gate; 103. Air outlet; 104. Support leg; 105. Sliding sleeve; 106. Support ring; 2. Feeding mechanism; 201. Top layer feed inlet; 202. Bottom layer feed inlet; 203. Middle layer feed inlet; 3. Supporting mechanism; 301. Top layer support plate; 302. Hollowed-out slot; 303. Raised ridge; 304. Feed through slot; 305. Middle layer support plate; 306. Bottom layer support plate; 4. Pushing mechanism; 401. Sliding rod; 402. Handle; 403. Push plate; 404. Protective pad; 5. Spraying mechanism; 501. Spray pipe; 502. Spray head; 503. Annular pipe; 504. Liquid inlet pipe; 6. Filler layer; 7. UV purifier. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0032] Please see Figures 1-6A desulfurization and denitrification device for kiln flue gas includes a shell mechanism 1 and a support mechanism 3. The shell mechanism 1 includes a shell body 101, three discharge gates 102 hinged to the side walls of the shell body 101, an air outlet 103 at the bottom end of the shell body 101, and a support leg 104 welded to the bottom end of the shell body 101. A sliding sleeve 105 is integrally fixed to the outer wall of the shell body 101, and three support rings 106 are welded to the inner wall of the shell body 101. The shell body 101 is made of stainless steel, which has the characteristics of high temperature resistance and corrosion resistance. The discharge gates 102 and the support rings 106 are vertically arranged. A feeder is welded to the top of the shell mechanism 1. Structure 2, the feeding mechanism 2 includes a top feed port 201 welded and fixed to the top wall of the housing body 101. The feeding mechanism 2 also includes a bottom feed port 202 and a middle feed port 203 welded and fixed to the top wall of the housing body 101. The top feed port 201, the bottom feed port 202 and the middle feed port 203 are all equipped with matching sealing caps. The top feed port 201, the bottom feed port 202 and the middle feed port 203 are all hollow cylindrical structures. The top feed port 201 is the shortest and the bottom feed port 202 is the longest. The staff can add filler to the inside of the device through the above feed ports.

[0033] like Figures 1-4As shown, a support mechanism 3 is movably arranged inside the shell mechanism 1. The support mechanism 3 includes a top support plate 301 movably arranged at the top of the support ring 106. The top support plate 301 has multiple hollow slots 302, multiple protruding ribs 303 integrally fixed on the top support plate 301, and a feed groove 304. The support mechanism 3 also includes a middle support plate 305 movably arranged on the inner wall of the shell body 101, and a bottom support plate 306 movably arranged on the inner wall of the shell body 101. The top support plate 301 is made of stainless steel and is inclined. The lower end of the feed chute is flush with the bottom of the discharge gate 102. The perforated slots 302 are evenly spaced, allowing airflow. Multiple convex ribs 303 are located between adjacent rows of perforated slots 302, and their orientation is the same as the inclination direction of the top support plate 301. This effectively prevents the feed chute from directly contacting the perforated slots 302 and reduces the support area between the feed chute and the top support plate 301, thereby reducing the sliding friction of the top support plate 301. When the operator opens the discharge gate 102, the feed chute slides out from the discharge gate 102 under gravity. Two feed channels 304 are provided. The middle layer inlet 203 and the bottom layer inlet 202 can pass through. The middle layer support plate 305 and the bottom layer support plate 306 are provided with the same hollow slots 302 and protruding ridges 303 as the top layer support plate 301. The top layer support plate 301, the middle layer support plate 305 and the bottom layer support plate 306 are all provided with a packing layer 6. The packing layer 6 is composed of a large number of adsorption block packings. The raw materials of the adsorption blocks are magnesium oxide, magnesium chloride, penetrant and foaming agent. These raw materials are prepared into topological polymer inorganic compound adsorption blocks after aging. The surface of the blocks is porous. When the waste gas passes through the packing layer 6, magnesium oxide and magnesium carbonate catalyze the reaction of oxygen and sulfide. The compound undergoes an adsorption oxidation reaction, producing sulfur trioxide. Sulfur trioxide has high oxidizing properties, so under the oxidation of sulfur trioxide, the nitrogen oxides in the waste gas are oxidized into high-valence nitrogen compounds. For example, under the catalytic oxidation of sulfur trioxide, dinitrogen pentoxide is produced. This compound quickly reacts with water in the waste gas to produce nitrates. The nitrates are quickly adsorbed in the inorganic porous molecules of topological magnesium oxide, achieving the purpose of rapid desulfurization and denitrification. The middle support plate 305 is provided with a feed channel 304 for the bottom feed port 202 to pass through, so that the staff can easily fill the packing into the bottom packing layer 6.

[0034] like Figure 1 and Figure 5As shown, a pushing mechanism 4 is slidably connected to the outer wall of the housing mechanism 1. The pushing mechanism 4 includes a sliding rod 401 slidably disposed inside the sliding sleeve 105. One end of the sliding rod 401 is fixed with a handle 402, and the other end of the sliding rod 401 is fixed with a push plate 403. A protective pad 404 is adhered to the push plate 403. There are three sliding sleeves 105, and the sliding sleeves 105 are vertically distributed. The push plate 403 is parallel to the support plate. When the device discharges the packing, the operator can grasp the handle 402 and push it several times. At this time, the sliding rod 401 and the push plate 403 will push the support plate, thereby continuously knocking and lifting the top of the support plate. The kinetic energy generated can shake off the packing on the support plate, so that the device can discharge the packing more conveniently and thoroughly. Each packing layer 6 can be discharged and fed separately, so that the replacement of the packing is more flexible.

[0035] like Figure 1 and Figure 6 As shown, a spraying mechanism 5 is welded and fixed to the top wall of the shell structure 1. The interior of the shell structure 1 is filled with a packing layer 6. A UV purifier 7 is also sealed and connected to the top of the shell structure 1. The spraying mechanism 5 includes multiple spray pipes 501 welded and fixed to the top wall of the shell body 101. A nozzle 502 is fixed to the bottom end of the spray pipe 501. An annular pipe 503 is sealed and welded to the top end of the spray pipe 501. An inlet pipe 504 is sealed and connected to the annular pipe 503. Pressurized activation water is connected to the inlet pipe 504. The activation water is transported to the nozzle 502 through the annular pipe 503 and the spray pipe 501 and sprayed out, thereby spraying on the surface of the packing layer 6. The activation water reacts with the magnesium oxide in the adsorption block to generate magnesium hydroxide that can be used for desulfurization, making the desulfurization reaction of the device more complete. Only a small amount of activation water needs to be sprayed intermittently to generate enough magnesium hydroxide. As the reaction proceeds, the water will be consumed. Therefore, no wastewater will be generated during the desulfurization process of the device.

[0036] In use, the operator adds packing material to the device through the top feed inlet 201, the middle feed inlet 203, and the bottom feed inlet 202. The kiln flue gas duct is connected to the UV purifier 7, and an exhaust pipe is connected to the outlet 103. When the flue gas enters the device, the UV purifier 7 generates ultraviolet light beams, which decompose oxygen molecules in the air to produce free oxygen, i.e., active oxygen. Because the free oxygen carries an imbalance of positive and negative electrons, it needs to combine with oxygen molecules to produce ozone. The strong oxidizing properties of ozone convert nitrogen oxides in the flue gas. The gas is high-valence nitrogen oxides, which are then absorbed by the alkaline module to achieve denitrification. The gas then enters the shell structure 1. The packing layer 6 can physically adsorb the particulate matter in the exhaust gas and further desulfurize and denitrify it. At the same time, the device can also improve its desulfurization effect through the spray mechanism 5. The purified gas is discharged through the outlet 103 and the exhaust pipe. When the packing needs to be replaced, the staff can directly open the discharge door 102, and the packing will be discharged under gravity. The staff can also push the mechanism 4 to further clean the packing.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A kiln flue gas desulfurization and denitrification device, comprising a shell mechanism (1) and a supporting mechanism (3), characterized in that: The top end of the shell mechanism (1) is welded with a feeding mechanism (2), the inside of the shell mechanism (1) is movably provided with a supporting mechanism (3), and the outer wall of the shell mechanism (1) is slidably connected with a pushing mechanism (4). The top wall of the shell mechanism (1) is welded with a spraying mechanism (5). The inside of the shell mechanism (1) is filled with a filler layer (6), and the top end of the shell mechanism (1) is also sealingly connected with a UV purifier (7).

2. A device for desulphurization and denitrification of flue gases from a furnace according to claim 1, characterized in that: The shell mechanism (1) comprises a shell body (101), the side wall of the shell body (101) is hingedly connected with three discharge doors (102), the bottom end of the shell body (101) is provided with an air outlet (103), the bottom end of the shell body (101) is welded with a supporting leg (104), the outer wall of the shell body (101) is integrally fixed with a sliding sleeve (105), and the inner wall of the shell body (101) is welded with three supporting rings (106).

3. A device for desulphurization and denitrification of flue gases from a furnace according to claim 2, characterized in that: The feeding mechanism (2) comprises a top layer feeding port (201) welded on the top wall of the shell body (101), and the feeding mechanism (2) further comprises a bottom layer feeding port (202) and a middle layer feeding port (203) welded on the top wall of the shell body (101).

4. The kiln flue gas desulfurization and denitrification device according to claim 2, characterized in that: The supporting mechanism (3) comprises a top layer supporting plate (301) movably arranged at the top end of the supporting ring (106), a plurality of hollow grooves (302) are formed in the top layer supporting plate (301), a plurality of convex edges (303) are integrally fixed on the top layer supporting plate (301), and a feeding slot (304) is formed in the top layer supporting plate (301).

5. The kiln flue gas desulfurization and denitrification device according to claim 2, characterized in that: The supporting mechanism (3) further comprises a middle layer supporting plate (305) movably arranged on the inner wall of the shell body (101), and the supporting mechanism (3) comprises a bottom layer supporting plate (306) movably arranged on the inner wall of the shell body (101).

6. A device for desulphurization and denitrification of flue gases from a furnace according to claim 2, characterized in that: The pushing mechanism (4) comprises a sliding rod (401) slidably arranged on the inner side of the sliding sleeve (105), one end of the sliding rod (401) is fixed with a handle (402), the other end of the sliding rod (401) is fixed with a push plate (403), and the push plate (403) is bonded with a protective pad (404).

7. A device for desulphurization and denitrification of flue gases from a furnace according to claim 2, characterized in that: The spraying mechanism (5) comprises a plurality of spray pipes (501) welded on the top wall of the shell body (101), the bottom end of the spray pipe (501) is fixed with a spray head (502), the top end of the spray pipe (501) is sealingly welded with an annular pipe (503), and the annular pipe (503) is sealingly connected with a liquid inlet pipe (504).

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