A clean combustion flue gas purification system

Abstract

The application relates to a clean combustion flue gas purification system and relates to the technical field of flue gas purification systems, which comprises a fixed base, the upper surface of the fixed base is fixedly installed with a hearth body, the upper surface of the hearth body is fixedly installed with a first connecting frame, and the upper surface of the first connecting frame is fixedly installed with a desulfurization tower body. The application is provided with the hearth body, the first connecting frame, the second connecting frame, the desulfurization tower body, the reaction box, the first connecting pipe and the second connecting pipe, the hearth body, the desulfurization tower body and the reaction box are communicated through the first connecting pipe and the second connecting pipe, high-temperature flue gas is generated by burning coal in the hearth, the flue gas sequentially passes through the desulfurization tower body and the reaction box, the limestone slurry in the desulfurization tower body is sprayed, reacts with sulfur dioxide in the flue gas to generate gypsum, and the flue gas is purified by reacting in the reaction box, so that the device can realize efficient collaborative treatment of clean combustion of coal and flue gas purification.

Description

Technical Field

[0001] This application relates to the field of flue gas purification system technology, and in particular to a clean combustion flue gas purification system. Background Technology

[0002] The continuous growth of global industrialization and energy consumption has led to a surge in emissions of air pollutants. Sulfur dioxide (SO2), nitrogen oxides (NOx), and particulate matter (PM) have become the main pollutants. Taking China as an example, flue gas emitted by coal-fired power plants, steel, cement and other industries accounts for more than 70% of the total industrial emissions. Among them, SO2 and NOx are the main causes of acid rain and photochemical smog, while PM2.5 directly harms human health.

[0003] Currently, various flue gas purification technologies have been developed both domestically and internationally, such as wet desulfurization, selective catalytic reduction denitrification, and electrostatic precipitators. However, these technologies are usually used individually and are difficult to achieve efficient synergistic purification. In addition, existing technologies suffer from high energy consumption, complex equipment, and high operating costs. There is an urgent need for an integrated, efficient, and energy-saving clean combustion and flue gas purification comprehensive treatment technology.

[0004] Therefore, a new way of solving this problem is needed. Utility Model Content

[0005] The purpose of this application is to provide a clean combustion flue gas purification system that has the advantages of achieving efficient synergistic treatment of clean coal combustion and flue gas purification, and solves the problem that existing devices are difficult to achieve efficient synergistic purification.

[0006] The clean combustion flue gas purification system provided in this application adopts the following technical solution: it includes a fixed base, a furnace body is fixedly installed on the upper surface of the fixed base, a first connecting frame is fixedly installed on the upper surface of the furnace body, a desulfurization tower body is fixedly installed on the upper surface of the first connecting frame, a second connecting frame is fixedly installed on the upper surface of the desulfurization tower body, a reaction box is fixedly installed on the upper surface of the second connecting frame, a first connecting pipe is fixedly installed on the outer surface of the furnace body, the end of the first connecting pipe away from the furnace body is fixedly connected to the desulfurization tower body, and a second connecting pipe is fixedly connected to the outer surface of the desulfurization tower body, the end of the second connecting pipe away from the desulfurization tower body is fixedly connected to the reaction box.

[0007] By adopting the above technical solution, the furnace body is used for combustion reaction. The upper surface of the furnace body is fixedly installed with a first connecting frame by bolts. The first connecting frame has a frame structure and provides stable support for the desulfurization tower body. The upper surface of the first connecting frame is fixedly installed with a cylindrical desulfurization tower body by flange connection for desulfurizing the flue gas. The second connecting frame also has a frame structure. The upper surface of the second connecting frame is fixedly installed with a rectangular reaction box by bolts for further chemical reaction. The first connecting pipe is made of high temperature and corrosion resistant metal material. One end of the first connecting pipe is connected to the gas outlet of the furnace body, and the other end is fixedly connected to the gas inlet of the desulfurization tower body to realize the transportation of flue gas. The second connecting pipe is also made of corrosion resistant material. One end of the second connecting pipe is connected to the gas outlet of the desulfurization tower body, and the other end is fixedly connected to the gas inlet of the reaction box to ensure that the desulfurized flue gas can smoothly enter the reaction box for subsequent treatment.

[0008] Preferably, an oxygen injector is fixedly installed on the outer surface of the furnace body, and an oxygen supply pipe is fixedly connected to the output end of the oxygen injector. The outer surface of the oxygen supply pipe is fixedly connected to the furnace body.

[0009] By adopting the above technical solution, the oxygen injector utilizes efficient air compression and oxygen separation technology, enabling precise control of the output oxygen flow and pressure to meet the needs of different combustion conditions within the furnace. The oxygen delivery pipe is made of a special alloy material, possessing excellent oxidation and corrosion resistance. The oxygen delivery pipe is carefully arranged along the outer wall of the furnace body and is fixedly connected to the pre-set air inlet on the furnace body through welding, ensuring a stable and uniform delivery of oxygen into the furnace interior, thereby optimizing the combustion process and improving combustion efficiency.

[0010] Preferably, a first door is hinged to the outer surface of the furnace body, and a second door is hinged to the outer surface of the desulfurization tower body.

[0011] By adopting the above technical solution, the first and second boxes are rectangular in shape, and their dimensions are precisely matched with the inspection ports of the furnace body and the desulfurization tower. Their edges are finely polished to effectively prevent the leakage of high-temperature flue gas and heat in the furnace.

[0012] Preferably, filter plates are fixedly installed on the inner walls of both the first connecting pipe and the second connecting pipe.

[0013] By adopting the above technical solution, the first connecting pipe and the second connecting pipe serve as key channels for flue gas transmission in the entire flue gas treatment system. Filter plates are fixedly installed on their inner walls using a high-precision welding process. The filter plates can effectively intercept larger particulate impurities carried in the flue gas, preventing them from entering subsequent treatment equipment and causing blockage or wear. They can also minimize the obstruction to the normal flow of flue gas, ensuring that the flue gas can pass through the connecting pipe at a stable and uniform flow rate, thus maintaining the efficient operation of the entire flue gas treatment system.

[0014] Preferably, a spray module is fixedly installed on the outer surface of the desulfurization tower body, the input end of the spray module is fixedly connected to an installation pipe, the output end of the spray module is fixedly connected to a spray head, and the outer surface of the spray head is fixedly connected to the desulfurization tower body.

[0015] By adopting the above technical solution, the input end of the spray module is fixedly connected to an installation pipe made of the same corrosion-resistant material via a flange connection. These spray heads employ a unique spiral nozzle design, enabling the desulfurization slurry to be sprayed out in a uniform mist form, forming a fine water curtain. This greatly increases the contact area between the slurry and the flue gas, thereby improving desulfurization efficiency. The spray heads are fixedly connected to the desulfurization tower body through a special sealing structure, ensuring that no slurry leakage occurs during high-pressure spraying and guaranteeing the stable operation of the entire desulfurization system.

[0016] Preferably, a partition plate is fixedly connected to the inner wall of the reaction chamber, and a connecting groove is formed on the outer surface of the partition plate, with a feed pipe fixedly connected to the outer surface of the connecting groove.

[0017] By adopting the above technical solution, the reaction chamber, as the core device of the entire chemical reaction system, has a partition plate fixedly connected to its inner wall through a high-precision welding process. The partition plate divides the reaction chamber into a denitrification reaction chamber and a dust removal chamber.

[0018] Preferably, a placement block is fixedly installed on the inner wall of the reaction chamber, and a water outlet pipe is fixedly connected to the outer surface of the reaction chamber.

[0019] By adopting the above technical solution, a catalyst is placed inside the block. Ammonia and nitrogen oxides react under the action of the catalyst to generate nitrogen and water. Then the water flows out from the outlet pipe, and the nitrogen rises into the connecting groove on the partition plate.

[0020] Preferably, a cover plate is fixedly installed on the outer surface of the reaction chamber, an exhaust pipe is fixedly connected to the upper surface of the cover plate, and an activated carbon plate is fixedly installed on the inner wall of the exhaust pipe.

[0021] By adopting the above technical solution, the cover plate perfectly matches the opening of the reaction chamber, and the edges are finely polished to ensure a seamless fit with the reaction chamber. This effectively prevents gas leakage that may occur during the reaction process, ensuring a safe and stable operating environment. An activated carbon plate is fixedly installed on the inner wall of the exhaust pipe using advanced embedded installation technology. The activated carbon plate is made of high-quality activated carbon and processed through a special molding process. It has a huge specific surface area and rich microporous structure, which can efficiently adsorb harmful substances in the reaction gas and ensure purification effect.

[0022] In summary, this application includes at least one of the following beneficial technical effects: This clean combustion flue gas purification system comprises a furnace body, a first connecting frame, a second connecting frame, a desulfurization tower, a reaction chamber, a first connecting pipe, and a second connecting pipe. The furnace body, desulfurization tower, and reaction chamber are connected by the first and second connecting pipes. Coal combustion in the furnace produces high-temperature flue gas, which sequentially passes through the desulfurization tower and the reaction chamber. Limestone slurry is sprayed onto the desulfurization tower, reacting with sulfur dioxide in the flue gas to generate gypsum. This gypsum then reacts with the flue gas inside the reaction chamber for purification, thus achieving highly efficient synergistic treatment of clean coal combustion and flue gas purification. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the oxygen injection unit structure in this application; Figure 3 This is a schematic diagram of the internal structure of the desulfurization tower in this application; Figure 4 This is a schematic diagram of the partition structure of this application; Figure 5 This is a schematic diagram of the cover plate structure of this application.

[0024] In the picture: 1. Fixed base; 2. Furnace body; 3. First chamber door; 4. Oxygen injector; 5. Oxygen supply pipe; 6. First connecting frame; 7. First connecting pipe; 8. Filter plate; 9. Desulfurization tower body; 10. Second chamber door; 11. Spray module; 12. Installation pipe; 13. Second connecting frame; 14. Reaction chamber; 15. Cover plate; 16. Exhaust pipe; 17. Second connecting pipe; 18. Water outlet pipe; 19. Divider plate; 20. Placement block; 21. Feed guide pipe; 22. Connecting trough; 23. Activated carbon plate; 24. Spray head. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail.

[0026] Example 1: A clean combustion flue gas purification system, referring to Figure 1 , Figure 2 , Figure 3The furnace includes a fixed base 1, a furnace body 2 fixedly mounted on the upper surface of the fixed base 1, a first connecting frame 6 fixedly mounted on the upper surface of the furnace body 2, a desulfurization tower body 9 fixedly mounted on the upper surface of the first connecting frame 6, a second connecting frame 13 fixedly mounted on the upper surface of the desulfurization tower body 9, a reaction chamber 14 fixedly mounted on the upper surface of the second connecting frame 13, a first connecting pipe 7 fixedly mounted on the outer surface of the furnace body 2, the end of the first connecting pipe 7 away from the furnace body 2 being fixedly connected to the desulfurization tower body 9, and a second connecting pipe 17 fixedly connected to the outer surface of the desulfurization tower body 9, the end of the second connecting pipe 17 away from the desulfurization tower body 9 being fixedly connected to the reaction chamber 14. The furnace body 2 is used for combustion reaction, and the first connecting frame 6 is fixedly mounted on the upper surface of the furnace body 2 by bolts. The connecting frame 6 has a frame structure, providing stable support for the desulfurization tower 9. The cylindrical desulfurization tower 9 is fixedly installed on its upper surface through a flange connection, which is used to desulfurize the flue gas. The second connecting frame 13 also has a frame structure, and a rectangular reaction box 14 is fixedly installed on its upper surface through bolts, which is used for further chemical reaction. The first connecting pipe 7 is made of high temperature and corrosion resistant metal material. One end of it is connected to the gas outlet of the furnace body 2, and the other end is fixedly connected to the gas inlet of the desulfurization tower 9 to realize the transportation of flue gas. The second connecting pipe 17 is also made of corrosion resistant material. One end of it is connected to the gas outlet of the desulfurization tower 9, and the other end is fixedly connected to the gas inlet of the reaction box 14 to ensure that the desulfurized flue gas can smoothly enter the reaction box 14 for subsequent treatment.

[0027] Example 2: A clean combustion flue gas purification system, referring to Figure 1 , Figure 2 An oxygen injector 4 is fixedly installed on the outer surface of the furnace body 2. An oxygen supply pipe 5 is fixedly connected to the output end of the oxygen injector 4. The outer surface of the oxygen supply pipe 5 is fixedly connected to the furnace body 2. The oxygen injector 4 employs efficient air compression and oxygen separation technology, enabling precise control of the output oxygen flow rate and pressure to meet the needs of different combustion conditions within the furnace. The oxygen supply pipe 5 is made of a special alloy material, possessing excellent oxidation and corrosion resistance. The oxygen supply pipe 5 is carefully arranged along the outer wall of the furnace body 2 and is fixedly connected to the pre-set air inlet on the furnace body 2 through welding, ensuring that oxygen can be stably and evenly delivered into the furnace, thereby optimizing the combustion process and improving combustion efficiency.

[0028] Please see Figure 1 The outer surface of the furnace body 2 is hinged with a first door 3, and the outer surface of the desulfurization tower body 9 is hinged with a second door 10. The first door 3 and the second door 10 are rectangular in shape, and their dimensions are precisely matched with the inspection ports of the furnace body 2 and the desulfurization tower body 9. Their edges are finely polished to effectively prevent the leakage of high-temperature flue gas and heat in the furnace.

[0029] Please see Figure 1, Figure 2 , Figure 3 The inner walls of the first connecting pipe 7 and the second connecting pipe 17 are both fixedly equipped with filter plates 8. As the key channels for flue gas transmission in the entire flue gas treatment system, the inner walls of the first connecting pipe 7 and the second connecting pipe 17 are fixedly equipped with filter plates 8 through high-precision welding process. The filter plates 8 can effectively intercept larger particulate impurities carried in the flue gas, prevent them from entering the subsequent treatment equipment and causing blockage or wear, and minimize the obstruction to the normal flow of flue gas, ensuring that the flue gas can pass through the connecting pipe at a stable and uniform flow rate, and maintaining the efficient operation of the entire flue gas treatment system.

[0030] Please see Figure 3 A spray module 11 is fixedly installed on the outer surface of the desulfurization tower body 9. The input end of the spray module 11 is fixedly connected to an installation pipe 12, and the output end of the spray module 11 is fixedly connected to a spray head 24. The outer surface of the spray head 24 is fixedly connected to the desulfurization tower body 9. The input end of the spray module 11 is fixedly connected to an installation pipe 12, also made of corrosion-resistant material, via a flange connection. These spray heads 24 employ a unique spiral nozzle design, enabling the desulfurization slurry to be sprayed out in a uniform mist form, forming a fine water curtain. This greatly increases the contact area between the slurry and the flue gas, thereby improving desulfurization efficiency. The spray head 24 is fixedly connected to the desulfurization tower body 9 through a special sealing structure, ensuring that no slurry leakage occurs during high-pressure injection, thus guaranteeing the stable operation of the entire desulfurization system.

[0031] Please see Figure 4 The inner wall of the reaction chamber 14 is fixedly connected to a partition plate 19. A connecting groove 22 is opened on the outer surface of the partition plate 19. A feed pipe 21 is fixedly connected to the outer surface of the connecting groove 22. As the core device of the entire chemical reaction system, the inner wall of the reaction chamber 14 is fixedly connected to a partition plate 19 by a high-precision welding process. The partition plate 19 divides the reaction chamber 14 into a denitrification reaction chamber and a dust removal chamber.

[0032] Please see Figure 4 The inner wall of the reaction chamber 14 is fixedly installed with a placement block 20, and the outer surface of the reaction chamber 14 is fixedly connected with a water outlet pipe 18. The placement block 20 contains a catalyst. Ammonia and nitrogen oxides react under the action of the catalyst to generate nitrogen and water. Then the water flows out from the water outlet pipe 18, and the nitrogen rises into the connecting groove 22 on the partition plate 19.

[0033] Please see Figure 5A cover plate 15 is fixedly installed on the outer surface of the reaction chamber 14. An exhaust pipe 16 is fixedly connected to the upper surface of the cover plate 15. An activated carbon plate 23 is fixedly installed on the inner wall of the exhaust pipe 16. The cover plate 15 is perfectly matched with the opening of the reaction chamber 14, and the edges are finely polished to ensure a seamless fit with the reaction chamber 14, thereby effectively preventing gas leakage that may occur during the reaction and ensuring the safety and stability of the operating environment. An activated carbon plate 23 is fixedly installed on the inner wall of the exhaust pipe 16 using advanced embedded installation technology. The activated carbon plate 23 is made of high-quality activated carbon as raw material and processed by a special molding process. It has a huge specific surface area and rich microporous structure, which can efficiently adsorb harmful substances in the reaction gas and ensure the purification effect.

[0034] The implementation principle of this application embodiment is as follows: First, open the first box door 3 and put in the coal, then ignite it and close the first box door 3. At this time, start the oxygen injector 4 and inject oxygen through the oxygen supply pipe 5, so that the coal can burn more completely. At this time, high-temperature flue gas is generated by combustion in the furnace body 2. The flue gas passes through the first connecting pipe 7 and the second connecting pipe 17 in sequence through the desulfurization tower body 9 and the reaction box 14. When the flue gas enters the desulfurization tower body 9, the spray module 11 will spray the limestone slurry inside through the spray head 24, which reacts with the sulfur dioxide in the flue gas to generate gypsum. When it enters the reaction box 14, ammonia and nitrogen oxides react under the action of a catalyst to generate nitrogen and water. At this time, the water will be discharged from the water outlet pipe 18, and the nitrogen will enter the other side of the partition plate 19 from the connecting groove 22. Finally, it will be purified by the activated carbon plate 23 and discharged through the exhaust pipe 16.

[0035] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A clean combustion flue gas purification system, comprising a fixed base (1), characterized in that: The upper surface of the fixed base (1) is fixedly installed with the furnace body (2), the upper surface of the furnace body (2) is fixedly installed with the first connecting frame (6), the upper surface of the first connecting frame (6) is fixedly installed with the desulfurization tower body (9), the upper surface of the desulfurization tower body (9) is fixedly installed with the second connecting frame (13), the upper surface of the second connecting frame (13) is fixedly installed with the reaction box (14), the outer surface of the furnace body (2) is fixedly installed with the first connecting pipe (7), the end of the first connecting pipe (7) away from the furnace body (2) is fixedly connected to the desulfurization tower body (9), the outer surface of the desulfurization tower body (9) is fixedly connected with the second connecting pipe (17), the end of the second connecting pipe (17) away from the desulfurization tower body (9) is fixedly connected to the reaction box (14).

2. The clean combustion flue gas purification system according to claim 1, characterized in that: An oxygen injector (4) is fixedly installed on the outer surface of the furnace body (2). An oxygen supply pipe (5) is fixedly connected to the output end of the oxygen injector (4). The outer surface of the oxygen supply pipe (5) is fixedly connected to the furnace body (2).

3. The clean combustion flue gas purification system according to claim 2, characterized in that: The outer surface of the furnace body (2) is hinged with a first door (3), and the outer surface of the desulfurization tower body (9) is hinged with a second door (10).

4. The clean combustion flue gas purification system according to claim 1, characterized in that: Filter plates (8) are fixedly installed on the inner walls of both the first connecting pipe (7) and the second connecting pipe (17).

5. The clean combustion flue gas purification system according to claim 3, characterized in that: A spray module (11) is fixedly installed on the outer surface of the desulfurization tower body (9). The input end of the spray module (11) is fixedly connected to an installation pipe (12). The output end of the spray module (11) is fixedly connected to a spray head (24). The outer surface of the spray head (24) is fixedly connected to the desulfurization tower body (9).

6. The clean combustion flue gas purification system according to claim 1, characterized in that: The inner wall of the reaction chamber (14) is fixedly connected to a partition plate (19), and a connecting groove (22) is opened on the outer surface of the partition plate (19). A feed pipe (21) is fixedly connected to the outer surface of the connecting groove (22).

7. The clean combustion flue gas purification system according to claim 6, characterized in that: The inner wall of the reaction chamber (14) is fixedly installed with a placement block (20), and the outer surface of the reaction chamber (14) is fixedly connected with a water outlet pipe (18).

8. The clean combustion flue gas purification system according to claim 7, characterized in that: The outer surface of the reaction chamber (14) is fixedly installed with a cover plate (15), and the upper surface of the cover plate (15) is fixedly connected with an exhaust pipe (16). The inner wall of the exhaust pipe (16) is fixedly installed with an activated carbon plate (23).

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