A desulfurization and dust removal integrated device for zinc-containing flue gas of a rotary kiln

Abstract

The utility model discloses a rotary kiln zinc-containing flue gas's desulfurization dust removal integration device relates to flue gas treatment technical field, including desulfurization jar still includes: the dust removal cylinder of setting in the one side of desulfurization jar outer surface, the inner top wall fixed setting of dust removal cloth bag of dust removal cylinder. The utility model discloses through the setting of cyclone separator, dust removal cloth bag, gas supply subassembly and high pressure shower nozzle, and the zinc-containing flue gas rotary kiln is passed into cyclone separator in the air inlet pipe, makes the preliminary separation of large particle material, reduces the burden of dust removal cloth bag, and the tiny particle material secondary capture of dust removal cloth bag, and the particle in flue gas can be removed efficiently, fully by grading purification, and the gas tank is equipped with high pressure gas pump, and the high pressure gas pump is opened regularly, and the high pressure shower nozzle is supplied with gas through the gas supply pipe, and the electric push rod is opened, and the high pressure shower nozzle blows the high pressure gas to dust removal cloth bag, and the particle that adheres on the surface of dust removal cloth bag is separated, and the filtration performance of dust removal cloth bag is kept.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to an integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln. Background Technology

[0002] In the process of processing zinc-containing materials (such as zinc dust from steel plants and electric furnace ash), rotary kilns generate a large amount of flue gas with complex composition and high treatment difficulty. This flue gas not only contains acidic gases such as sulfur dioxide, but is also rich in fine particulate matter formed by the vaporization of volatile metals such as zinc and lead at high temperatures and subsequent condensation in low-temperature zones. Direct emission into the air will seriously affect the air environment. Therefore, desulfurization and dust removal treatment is required for the zinc-containing flue gas from rotary kilns.

[0003] Traditional desulfurization and dust removal devices for zinc-containing flue gas from rotary kilns typically involve dust removal and desulfurization through different equipment and independent processes. This results in high equipment costs, large footprints, and low efficiency. Furthermore, they often use single dust collector bags, which place a heavy burden on the bags and require frequent cleaning. Additionally, this approach does not facilitate improving the reaction and mixing efficiency between the flue gas and the adsorbent liquid. Consequently, the flue gas is prone to uneven distribution and low desulfurization efficiency when entering the desulfurization process.

[0004] In conclusion, the existing technology has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This invention provides an integrated desulfurization and dust removal device for zinc-containing flue gas from rotary kilns, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln, comprising a desulfurization tank, and further comprising: a dust removal cylinder disposed on one side of the outer surface of the desulfurization tank, wherein a dust removal bag is fixedly disposed on the inner top wall of the dust removal cylinder, and a connecting pipe is fixedly disposed on the top of the dust removal bag; a stirring assembly is fixedly installed on the bottom surface of the desulfurization tank; an electric push rod disposed on one side of the top surface of the connecting pipe, wherein an air supply assembly is fixedly disposed on the bottom of the electric push rod, and one end of the air supply assembly is connected to four sets of high-pressure nozzles in a circular array; a cyclone separator is fixedly installed on the bottom surface of the dust removal cylinder; and an aeration assembly, wherein the aeration assembly comprises an air supply pipe disposed at one end of the connecting pipe, and one end of the air supply pipe is connected to an aeration ring pipe.

[0007] Furthermore, the stirring assembly includes a servo motor fixedly installed on the bottom surface of the desulfurization tank, and a stirring rod is fixedly installed at the output end of the servo motor. The stirring assembly is used to stir the absorbent liquid.

[0008] Furthermore, the air supply assembly includes a connecting head fixedly installed at the bottom of the electric push rod, one side of which is connected to an air supply pipe. A high-pressure air pump is fixedly installed on the outer surface of the dust collector. The output end of the high-pressure air pump is connected to the air supply pipe, and the input end of the high-pressure air pump is connected to an external air storage tank. The air supply assembly is used to supply air to the high-pressure nozzle.

[0009] Furthermore, a tank cover is snapped onto the top surface of the desulfurization tank, and an exhaust pipe is fixedly installed on one side of the top surface of the tank cover. A valve is fixedly installed on the surface of the exhaust pipe, and the valve controls the opening and closing of the exhaust pipe.

[0010] Furthermore, a drain pipe is provided through the bottom of the outer surface of the desulfurization tank, and an on / off valve is fixedly installed on the surface of the drain pipe to control the opening and closing of the drain pipe.

[0011] Furthermore, the top surface of the aeration ring pipe is provided with a number of aeration holes, which are arranged in a ring array to facilitate the dispersion of gas into the desulfurization tank.

[0012] Furthermore, four sets of support legs are fixedly installed on the top surface of the desulfurization tank. The four sets of support legs are arranged in a circular array and are used to support the desulfurization tank.

[0013] Furthermore, an air inlet pipe is fixedly installed at the input end of the cyclone separator, and one end of the air inlet pipe is connected to the exhaust channel of the rotary kiln, so that zinc-containing flue gas from the rotary kiln can be easily introduced through the air inlet pipe.

[0014] Compared with the prior art, this utility model provides an integrated desulfurization and dust removal device for zinc-containing flue gas from rotary kilns, which has the following beneficial effects: 1. This integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln utilizes a cyclone separator, dust collector bags, an air supply assembly, and high-pressure nozzles. The air inlet pipe guides the zinc-containing flue gas from the rotary kiln into the cyclone separator, allowing for the initial separation of large particles and reducing the burden on the dust collector bags. The dust collector bags then capture small particles, and this graded purification process efficiently and thoroughly removes particulate matter from the flue gas. A storage tank is provided for the high-pressure air pump, which is periodically activated to supply air to the high-pressure nozzles via the air supply pipe. The electric actuator then blows high-pressure gas onto the dust collector bags, causing particles adhering to the surface of the dust collector bags to detach, thus maintaining the filtration performance of the dust collector bags.

[0015] 2. This integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln utilizes aeration and stirring components. A caustic soda solution is injected into the desulfurization tank, and the filtered flue gas is fed into the gas delivery pipe via a connecting pipe. The gas is then dispersed into the desulfurization tank through the aeration ring pipe, increasing the contact area between the gas and liquid phases. Simultaneously, a servo motor drives the stirring rod to rotate, uniformly mixing the caustic soda solution to prevent sedimentation and uneven concentration, while also accelerating the reaction rate between the flue gas and the caustic soda solution. This achieves integrated dust removal and desulfurization, improving the treatment efficiency of zinc-containing flue gas from the rotary kiln. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the aeration component structure of this utility model; Figure 4 This is an enlarged structural diagram of point A in this utility model; Figure 5 This is a schematic diagram of the stirring assembly structure of this utility model; Figure 6 This is a schematic diagram of the desulfurization tank structure of this utility model.

[0017] In the diagram: 1. Desulfurization tank; 2. Dust collector cylinder; 3. Dust collector bag; 4. Connecting pipe; 5. Electric push rod; 6. Air supply assembly; 61. Connecting head; 62. Air supply pipe; 63. High-pressure air pump; 7. High-pressure nozzle; 8. Cyclone separator; 9. Aeration assembly; 91. Air delivery pipe; 92. Aeration ring pipe; 10. Stirring assembly; 101. Servo motor; 102. Stirring rod; 11. Tank cover; 12. Exhaust pipe; 13. Air inlet pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-6This utility model discloses an integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln, including a desulfurization tank 1, and further including: a dust removal cylinder 2 disposed on one side of the outer surface of the desulfurization tank 1, a dust removal bag 3 fixedly disposed on the inner top wall of the dust removal cylinder 2, a connecting pipe 4 fixedly disposed on the top of the dust removal bag 3, and a stirring assembly 10 fixedly installed on the bottom surface of the desulfurization tank 1; an electric push rod 5 disposed on one side of the top surface of the connecting pipe 4, an air supply assembly 6 fixedly disposed at the bottom of the electric push rod 5, one end of the air supply assembly 6 being connected to four sets of high-pressure nozzles 7 in a circular array, and a cyclone separator 8 fixedly installed on the bottom surface of the dust removal cylinder 2; through the cyclone separator 8, The dust collector bag 3, air supply component 6, and high-pressure nozzle 7 are configured so that the air inlet pipe 13 passes the zinc-containing flue gas from the rotary kiln into the cyclone separator 8, which initially separates large particles and reduces the burden on the dust collector bag 3. The dust collector bag 3 then captures small particles again. The graded purification can efficiently and fully remove particles from the flue gas. The high-pressure air pump 63 is equipped with an air storage tank. The high-pressure air pump 63 is turned on periodically to supply air to the high-pressure nozzle 7 through the air supply pipe 62. The electric push rod 5 is turned on so that the high-pressure nozzle 7 blows high-pressure gas to the dust collector bag 3, causing the particles attached to the surface of the dust collector bag 3 to detach and maintain the filtration performance of the dust collector bag 3. The aeration component 9 includes a gas delivery pipe 91 at one end of the connecting pipe 4, and an aeration ring pipe 92 at one end of the gas delivery pipe 91. Through the arrangement of the aeration component 9 and the stirring component 10, caustic soda solution is injected into the desulfurization tank 1. The connecting pipe 4 passes the filtered flue gas into the gas delivery pipe 91, and then disperses it into the desulfurization tank 1 through the aeration ring pipe 92, which increases the contact area between the gas and liquid phases. At the same time, the servo motor 101 drives the stirring rod 102 to rotate, which on the one hand uniformly mixes the caustic soda solution and avoids solution sedimentation and uneven concentration, and on the other hand accelerates the reaction rate between the flue gas and the caustic soda solution, realizing the integration of dust removal and desulfurization, and improving the treatment efficiency of zinc-containing flue gas in the rotary kiln.

[0020] Furthermore, the stirring assembly 10 includes a servo motor 101 fixedly installed on the bottom surface of the desulfurization tank 1, and a stirring rod 102 is fixedly installed at the output end of the servo motor 101.

[0021] In this embodiment, the servo motor 101 drives the stirring rod 102 to rotate, which on the one hand uniformly mixes the caustic soda solution to avoid solution sedimentation and uneven concentration, and on the other hand accelerates the reaction rate between flue gas and caustic soda solution.

[0022] Furthermore, the air supply assembly 6 includes a connecting head 61 fixedly installed at the bottom of the electric push rod 5. One side of the connecting head 61 is connected to an air supply pipe 62. A high-pressure air pump 63 is fixedly installed on the outer surface of the dust collector 2. The output end of the high-pressure air pump 63 is connected to the air supply pipe 62, and the input end of the high-pressure air pump 63 is connected to an external air storage tank.

[0023] In this embodiment, the high-pressure air pump 63 is equipped with an air storage tank. The high-pressure air pump 63 is turned on periodically to supply air to the high-pressure nozzle 7 through the air supply pipe 62. The electric push rod 5 is turned on so that the high-pressure nozzle 7 blows high-pressure gas to the dust collector bag 3, so that the particles attached to the surface of the dust collector bag 3 are removed and the filtration performance of the dust collector bag 3 is maintained.

[0024] Furthermore, a tank cover 11 is snapped onto the top surface of the desulfurization tank 1, and an exhaust pipe 12 is fixedly installed on one side of the top surface of the tank cover 11. A valve is fixedly installed on the surface of the exhaust pipe 12.

[0025] In this embodiment, the exhaust pipe 12 is used to discharge the treated gas, and the valve controls the opening and closing of the exhaust pipe 12.

[0026] Furthermore, a drain pipe is installed through the bottom of the outer surface of the desulfurization tank 1, and an on / off valve is fixedly installed on the surface of the drain pipe.

[0027] In this implementation plan, the on / off valve controls the opening and closing of the drain pipe.

[0028] Furthermore, the top surface of the aeration ring pipe 92 is provided with several aeration holes, which are distributed in a ring array.

[0029] In this implementation plan, the aeration holes facilitate the introduction of flue gas into the desulfurization tank 1.

[0030] Furthermore, four sets of support legs are fixedly installed on the top surface of the desulfurization tank 1, and the four sets of support legs are distributed in a circular array.

[0031] In this embodiment, the support leg is used to support the desulfurization tank 1.

[0032] Furthermore, an air inlet pipe 13 is fixedly installed at the input end of the cyclone separator 8, and one end of the air inlet pipe 13 is connected to the exhaust channel of the rotary kiln.

[0033] In this embodiment, the air inlet pipe 13 facilitates the entry of zinc-containing flue gas from the rotary kiln into the cyclone separator 8.

[0034] The working principle and usage process of this utility model: The zinc-containing flue gas from the rotary kiln is introduced into the cyclone separator 8 through the air inlet pipe 13, so that the large particles are initially separated, reducing the burden on the dust collector bag 3. The dust collector bag 3 captures the remaining zinc-containing micro particles for a second time. The graded purification can efficiently and fully remove the particulate matter in the flue gas. The high-pressure air pump 63 is equipped with an air storage tank. The high-pressure air pump 63 is turned on periodically to supply air to the high-pressure nozzle 7 through the air supply pipe 62. The electric push rod 5 is turned on so that the high-pressure nozzle 7 blows high-pressure gas to the dust collector bag 3, so that the particles attached to the surface of the dust collector bag 3 are removed and the filtration performance of the dust collector bag 3 is maintained. A caustic soda solution is injected into the desulfurization tank 1. The filtered flue gas is then introduced into the gas supply pipe 91 through the connecting pipe 4, and then dispersed into the desulfurization tank 1 through the aeration ring pipe 92. This increases the contact area between the gas and liquid phases. At the same time, the servo motor 101 drives the stirring rod 102 to rotate, uniformly mixing the caustic soda solution and avoiding solution sedimentation and uneven concentration. In addition, it also accelerates the reaction rate between the flue gas and the caustic soda solution, realizing the integration of dust removal and desulfurization, and improving the treatment efficiency of zinc-containing flue gas from the rotary kiln.

[0035] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln, comprising a desulfurization tank, characterized in that, Also includes: A dust collector cylinder is installed on one side of the outer surface of the desulfurization tank. A dust collector bag is fixedly installed on the inner top wall of the dust collector cylinder, and a connecting pipe is fixedly installed on the top of the dust collector bag. A stirring assembly is fixedly installed on the bottom surface of the desulfurization tank. An electric push rod is installed on one side of the top surface of the connecting pipe. An air supply component is fixedly installed at the bottom of the electric push rod. One end of the air supply component is connected to four sets of high-pressure nozzles in a ring array. A cyclone separator is fixedly installed on the bottom surface of the dust collection cylinder. An aeration assembly, comprising an air supply pipe disposed at one end of a connecting pipe, wherein one end of the air supply pipe is connected to an aeration ring pipe.

2. The integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln according to claim 1, characterized in that: The stirring assembly includes a servo motor fixedly installed on the bottom surface of the desulfurization tank, and a stirring rod is fixedly installed at the output end of the servo motor.

3. The integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln according to claim 1, characterized in that: The air supply assembly includes a connecting head fixedly installed at the bottom of the electric push rod. One side of the connecting head is connected to an air supply pipe. A high-pressure air pump is fixedly installed on the outer surface of the dust collector. The output end of the high-pressure air pump is connected to the air supply pipe, and the input end of the high-pressure air pump is connected to an external air storage tank.

4. The integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln according to claim 1, characterized in that: The desulfurization tank has a tank cover snapped onto its top surface, and an exhaust pipe is fixedly installed on one side of the top surface of the tank cover. A valve is fixedly installed on the surface of the exhaust pipe.

5. The integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln according to claim 1, characterized in that: A drain pipe is provided through the bottom of the outer surface of the desulfurization tank, and an on / off valve is fixedly installed on the surface of the drain pipe.

6. The integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln according to claim 1, characterized in that: The top surface of the aeration ring pipe has a number of aeration holes, which are arranged in a ring array.

7. The integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln according to claim 1, characterized in that: The top surface of the desulfurization tank is fixedly equipped with four sets of support legs, which are arranged in a circular array.

8. The integrated desulfurization and dust removal device for zinc-containing flue gas from a rotary kiln according to claim 1, characterized in that: An air inlet pipe is fixedly installed at the input end of the cyclone separator, and one end of the air inlet pipe is connected to the exhaust channel of the rotary kiln.

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