Tail gas treatment equipment based on garbage power station
By designing a exhaust gas treatment equipment that integrates dust removal, desulfurization and denitrification functions, the waste problem in waste gas treatment in waste power plants is solved, and more efficient removal of harmful substances and resource conservation is achieved.
Patent Information
- Application Number
- CN202421009377.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-10
AI Technical Summary
There is a waste problem in the treatment of harmful substances in the exhaust gas of waste power plants, resulting in inefficiency in the treatment of raw materials and processes.
Design a waste power station-based exhaust gas treatment equipment, including dust collectors, desulfurization devices and denitrification devices, to increase the flue gas density through the booster mechanism, and the spraying mechanism and spray pipes are efficiently desulfurized and denitrified.
It improves the removal efficiency of sulfur dioxide and nitrogen oxides in flue gas, reduces waste of treatment raw materials, and enhances the thoroughness of exhaust gas treatment.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of denitration equipment, in particular to tail gas treatment equipment based on a garbage power station. Background Art
[0002] Waste-to-energy mainly generates heat energy by incinerating waste, which is then converted into electricity. The exhaust gas emitted by waste incineration power generation (heating) plants mainly comes from the flue gas produced by the incinerator. The flue gas contains a variety of pollutants, the most important of which are dust, a large amount of nitrogen oxides (NOx) and sulfur dioxide (SO2) and other harmful substances, which have potential hazards to the environment and human health.
[0003] In order to reduce the concentration of original emissions, waste incineration power plants usually use various exhaust gas treatment technologies to reduce harmful substances in the exhaust gas. However, after research and analysis, it was found that due to the long duration of the exhaust gas emission process and the different exhaust gas density per unit time, the processing of raw materials and the processing process will continue, resulting in a certain degree of waste. Utility Model Content
[0004] Therefore, in order to solve the above-mentioned deficiencies, the utility model constructs an exhaust gas treatment equipment based on a garbage power plant, including a dust collector, a desulfurization device and a denitrification device. The dust collector specifically includes a boosting bin and a boosting mechanism installed inside the boosting bin, and an opening at the top of the boosting bin is provided with an explosion-proof pipe; the desulfurization device is composed of a desulfurization tank, a spraying mechanism and a fan, wherein the boosting bin and the desulfurization tank are connected through an explosion-proof pipe, and the fan is installed at the opening at the top of the desulfurization tank and directly facing the bottom of the explosion-proof pipe; the denitrification device is composed of a denitrification tank and a spray pipe installed inside the denitrification tank, the spray pipe is connected to the filling port of the denitrification tank, and the desulfurization tank and the denitrification tank are connected through a laterally arranged pipeline.
[0005] Furthermore, the boosting mechanism is composed of an inner cavity, fixed blades, a transmission plate, disk blades and a motor A, wherein the inner cavity is protruding along the inner wall of the boosting chamber, and the fixed blades are arranged in a ring shape and overlapped in sequence on the inner side of the inner cavity and are fixedly connected to the inner cavity, the motor A is installed on the bottom wall of the boosting chamber and maintains a transmission connection with the transmission plate, the transmission plate is built into the inner side of the inner cavity, and the disk blades are arranged in a ring shape and overlapped in sequence on the outer side of the transmission plate.
[0006] Furthermore, discharge ports are provided at the bottom ends of the desulfurization tank and the denitrification tank.
[0007] Furthermore, the spraying mechanism is composed of a motor B, a swing arm tube, a bearing and a serpentine tube, wherein both ends of the swing arm tube have bearings, the motor B is arranged on the side wall of the desulfurization tank and is connected to the bearing through a gear box, and both ends of the serpentine tube are respectively connected to the swing arm tube and the filling port of the desulfurization tank.
[0008] Further, any disc blade is arranged between adjacent fixed blades and forms an air passage therewith.
[0009] Furthermore, the axial cross-sections of the fixed blades and the disc blades are smooth arc-shaped.
[0010] Furthermore, a dust removal box is embedded and installed on the inner side near the inlet of the boosting chamber.
[0011] The beneficial effects of the utility model can be reflected in the following aspects after specific analysis:
[0012] Advantage 1: After the flue gas enters the desulfurization tank, the desulfurizer is continuously sprayed into the flue gas through the spraying mechanism, and reacts with the sulfur dioxide in the flue gas to generate calcium sulfate or ammonium sulfate, thereby achieving the purpose of removing sulfur dioxide in the flue gas. The spraying mechanism can swing in the desulfurization tank to spray and cover the flue gas in an all-round and high-density manner, making its reaction efficiency higher; the spray pipe in the denitrification device sprays the denitrifier into the flue gas in the denitrification tank, and reacts with the nitrogen oxides in the flue gas under the action of the catalyst to generate nitrogen and water, thereby achieving the purpose of removing nitrogen oxides in the flue gas, and the desulfurization and denitrification efficiency is higher, and the reaction time is also shortened.
[0013] Advantage 2: The inner wall of the booster bin is reinforced. Motor A drives the transmission disc to rotate through the transmission shaft. After the disc blades rotate, the flue gas in the booster bin is compressed and transported from the exhaust port on the top to the explosion-proof pipe, so that the flue gas transportation density in the booster bin per unit time is effectively improved, so that the subsequent desulfurization and denitrification reactions are more thorough. At the same time, it also saves processing raw materials to a certain extent and eliminates waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of the tail gas treatment equipment based on the garbage power station of the utility model;
[0015] Figure 2 This utility model Figure 1 A top view of the middle boost mechanism;
[0016] Figure 3 This utility model Figure 1 Enlarged schematic diagram of point M in the middle.
[0017] Figure markings: dust collector 1, boosting bin 101, boosting mechanism 102, inner cavity 121, fixed blades 122, transmission disc 123, disc blades 124, air duct 125, motor A126, dust removal box 103, desulfurization device 2, desulfurization tank 201, spraying mechanism 202, motor B221, swing arm pipe 222, bearing 223, serpentine pipe 224, fan 203, denitrification device 3, denitrification tank 301, spray pipe 302, explosion-proof pipe 4, discharge port 5. DETAILED DESCRIPTION
[0018] The present invention will be described in detail below in conjunction with the accompanying drawings, and the technical solutions in the embodiments of the present invention will be described clearly and completely, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work shall fall within the scope of protection of the present invention;
[0019] It should be understood that ordinal numbers and directional descriptions, such as "first", "second", "third", "upper, lower, left, right", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and therefore cannot be understood as a limitation on the present utility model.
[0020] The following is a further detailed description of the technical solution of the utility model in conjunction with the drawings and specific embodiments of the specification. The present application provides an exhaust gas treatment equipment based on a garbage power plant, including a dust collector 1, a desulfurization device 2 and a denitrification device 3. The dust collector 1 specifically includes a boosting bin 101 and a boosting mechanism 102 installed inside the boosting bin 101, and an opening is provided at the top of the boosting bin 101 with an explosion-proof pipe 4 installed; the desulfurization device 2 is composed of a desulfurization tank 201, a spraying mechanism 202 and a fan 203, wherein the boosting bin 101 and the desulfurization tank 201 are connected through the explosion-proof pipe 4, and the fan 203 is installed at the opening at the top of the desulfurization tank 201 and is directly opposite to the bottom of the explosion-proof pipe 4; the denitrification device 3 is composed of a denitrification tank 301 and a spray pipe 302 installed inside the denitrification tank 301, the spray pipe 302 is connected to the filling port of the denitrification tank 301, and the desulfurization tank 201 and the denitrification tank 301 are connected through a laterally arranged pipeline.
[0021] Based on the above supplement, the dust collector 1 is used for flue gas pretreatment, mainly through the dust box 103 to block and adsorb the solid particles and dust in the preliminary flue gas, so as to reduce the interference of subsequent treatment and prevent equipment clogging. The dust box 103 is embedded in the air inlet channel of the booster bin 101 and can be replaced daily; the desulfurization device 2 is used to convert the sulfur dioxide in the flue gas after the above steps into sulfate or sulfur oxide to reduce the impact on the subsequent denitrification efficiency and equipment. After the flue gas enters the desulfurization tank 201, it is continuously sprayed by the spraying mechanism 202. The desulfurizer (such as limestone or ammonia water) is sprayed into the flue gas, and reacts with the sulfur dioxide in the flue gas to generate calcium sulfate or ammonium sulfate, thereby achieving the purpose of removing sulfur dioxide in the flue gas. The spraying mechanism 202 can swing in the desulfurization tank 201 to spray and cover the flue gas in an all-round and high-density manner, making its reaction efficiency higher; the spray pipe 302 in the denitrification device 3 sprays the denitrifier (such as ammonia water or urea) into the flue gas in the denitrification tank 301, and reacts with the nitrogen oxides in the flue gas under the action of the catalyst to generate nitrogen and water, thereby achieving the purpose of removing nitrogen oxides in the flue gas.
[0022] Please refer to Figure 1-3 As shown, the boost mechanism 102 is composed of an inner cavity 121, a fixed blade 122, a transmission disk 123, a disk blade 124 and a motor A126, wherein the inner cavity 121 is protruding along the inner wall of the boost chamber 101, and the fixed blade 122 is arranged in an annular shape and overlapped in sequence on the inner side of the inner cavity 121 and is fixedly connected to the inner cavity 121, the motor A126 is installed on the inner bottom wall of the boost chamber 101 and maintains a transmission connection with the transmission disk 123, the transmission disk 123 is built into the inner side of the inner cavity 121, and the disk blade 124 is arranged in an annular shape and overlapped in sequence on the inner side of the transmission disk 123. 23, the inner cavity 121 is close to the exhaust port of the boosting chamber 101, and is also a protruding reinforcement on the inner wall of the boosting chamber 101. The motor A126 drives the transmission disk 123 to rotate through the transmission shaft, so that the disk blades 124 rotate to compress the flue gas in the boosting chamber 101 and then transport it from the exhaust port on the top to the explosion-proof pipe 4, so that the flue gas transportation density in the boosting chamber 101 per unit time is effectively improved, so that the subsequent desulfurization and denitrification reactions are more thorough, and at the same time, the processing raw materials are saved to a certain extent.
[0023] More specifically, any disc blade 124 is disposed between adjacent stationary blades 122 and forms an air passage 125 therewith; the axial cross-sections of the stationary blades 122 and the disc blades 124 are smooth arc-shaped.
[0024] As an example, when the disc blades 124 rotate, the pressure above the blades is high and the pressure below is low, thereby transporting the smoke upward. At the same time, the smoke is compressed due to the obstruction of the fixed blades 122, and the compressed high-density smoke is transported into the explosion-proof pipe 4 through the air duct 125.
[0025] Figure 1 In the embodiment, the bottom ends of the desulfurization tank 201 and the denitrification tank 301 are both provided with a discharge port 5, and the discharge port 5 is used to discharge the products generated by desulfurization and denitrification out of the tank. The spraying mechanism 202 is composed of a motor B221, a swing arm tube 222, a bearing 223 and a serpentine tube 224, wherein both ends of the swing arm tube 222 have bearings 223, the motor B221 is arranged on the side wall of the desulfurization tank 201 and is connected to the bearing 223 through a gear box, and both ends of the serpentine tube 224 are respectively connected to the swing arm tube 222 and the filling port of the desulfurization tank 201.
[0026] As an example, the spraying mechanism 202 in the desulfurization tank 201 drives the swing arm 222 to maintain a left-right swing of 0-180° through the motor B221, and at the same time, the alkaline desulfurization liquid is transported to the swing arm pipe 222 through the serpentine pipe 224. At the same time, the nozzle on the swing arm pipe 222 atomizes the alkaline desulfurization liquid, and the gas-liquid two phases undergo sufficient mass and heat transfer. The SO2 in the flue gas is absorbed and reacts with the alkaline solution to form sodium sulfite. After desulfurization, the flue gas enters the desulfurization device 3 again through the pipeline for treatment; a dust removal box 103 is embedded and installed on the inner side near the inlet of the boosting bin 101; the dust removal box 103 is installed in an embedded sealed manner, which can intercept solid particles and dust in the flue gas to reduce interference in subsequent treatment, prevent equipment clogging, and improve the flue gas suction efficiency of the boosting mechanism 102.
[0027] In summary, the exhaust gas treatment equipment based on the garbage power plant described in the utility model, the boosting mechanism can centrally boost the continuously emitted flue gas, so that the output flue gas per unit time can be centrally desulfurized and denitrified, and the spraying mechanism can make the desulfurization and denitrification efficiency higher, thereby preventing the waste of processing raw materials.
[0028] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here; it should be pointed out that for technical personnel in this field, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent; the protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. An exhaust gas treatment device based on a garbage power plant, characterized in that: The invention comprises a dust collector (1), a desulfurization device (2) and a denitrification device (3), wherein the dust collector (1) specifically comprises a pressurization bin (101) and a pressurization mechanism (102) installed inside the pressurization bin (101), and an explosion-proof pipe (4) is installed at an opening at the top of the pressurization bin (101); the desulfurization device (2) comprises a desulfurization tank (201), a spraying mechanism (202) and a fan (203), wherein the pressurization bin (101) and the desulfurization tank (201) are connected by a spraying mechanism (202). The explosion-proof pipe (4) maintains a connection passage, the fan (203) is installed at the opening at the top of the desulfurization tank (201) and directly faces the bottom of the explosion-proof pipe (4); the denitration device (3) is composed of a denitration tank (301) and a spray pipe (302) installed inside the denitration tank (301), the spray pipe (302) and the filling port of the denitration tank (301) maintain a connection passage, and the desulfurization tank (201) and the denitration tank (301) maintain a connection passage through a pipeline arranged laterally.
2. The tail gas treatment equipment based on a garbage power plant according to claim 1, characterized in that: The boost mechanism (102) is composed of an inner cavity (121), fixed blades (122), a transmission disk (123), disk blades (124) and a motor A (126), wherein the inner cavity (121) is protrudingly arranged along the inner wall of the boost chamber (101), and the fixed blades (122) are arranged in an annular shape and overlapped in sequence on the inner side of the inner cavity (121) and are fixedly connected to the inner cavity (121), the motor A (126) is installed on the inner bottom wall of the boost chamber (101) and maintains a transmission connection with the transmission disk (123), the transmission disk (123) is built into the inner side of the inner cavity (121), and the disk blades (124) are arranged in an annular shape and overlapped in sequence on the outer side of the transmission disk (123).
3. The tail gas treatment equipment based on a garbage power plant according to claim 1 is characterized in that: The bottom ends of the desulfurization tank (201) and the denitrification tank (301) are both provided with a discharge port (5).
4. The tail gas treatment equipment based on a garbage power plant according to claim 1 is characterized in that: The spraying mechanism (202) is composed of a motor B (221), a swing arm tube (222), a bearing (223) and a serpentine tube (224), wherein both ends of the swing arm tube (222) are provided with bearings (223), the motor B (221) is arranged on the side wall of the desulfurization tank (201) and is connected to the bearing (223) via a gear box, and both ends of the serpentine tube (224) are connected to the swing arm tube (222) and the filling port of the desulfurization tank (201) respectively.
5. The tail gas treatment equipment based on a garbage power plant according to claim 2 is characterized in that: Any of the disc blades (124) is disposed between adjacent stationary blades (122) and forms an air passage (125) therewith.
6. The tail gas treatment equipment based on a garbage power plant according to claim 2 is characterized in that: The axial cross-sections of the fixed blades (122) and the disc blades (124) are smooth arc-shaped.
7. The tail gas treatment equipment based on a garbage power plant according to claim 1 is characterized by: A dust removal box (103) is embedded and installed on the inner side close to the inlet of the boosting chamber (101).