Efficient sulfur dioxide preparation system with flue gas purification function

Abstract

The utility model discloses an efficient sulfur dioxide preparation system with a flue gas purification function. The pumping box is connected with the sulfur melting box; the gasification combustion chamber is arranged at the output end of the pumping box; the gas chamber air feeder is connected with the input end of the gasification combustion chamber; the flue gas mixing pipeline is arranged at the output end of the gasification combustion chamber; the combustion hearth is connected with the flue gas mixing pipeline; the air distribution pipeline is arranged above the combustion hearth; the air distribution fan is arranged at the input end of the air distribution pipeline; one end of the first air conveying pipeline is connected with the air distribution pipeline; one end of the second air conveying pipeline is connected with the air distribution pipeline; the cooling assembly is arranged at the output end of the combustion hearth; the purification tower is connected with the cooling assembly; and the atomizing and spraying assembly is connected with the purification tower. Compared with the prior art, the technical scheme disclosed by the utility model has the advantages that sulfur-containing flue gas can be purified, the hidden danger of blockage after the flue gas is cooled is reduced, and energy conservation and environmental protection are facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of sulfur dioxide preparation systems, and more specifically, to a high-efficiency sulfur dioxide preparation system with flue gas purification. Background Technology

[0002] Sulfur dioxide is an important clarifying agent in various industries, including sugar refining. It reacts with lime milk to produce calcium sulfate, which removes impurities such as colloids and pigments from liquids. Currently, sulfur dioxide is primarily obtained by burning sulfur. The equipment used for sulfur combustion is typically a combustion furnace, where sulfur is placed and fully burned to produce sulfur dioxide flue gas.

[0003] Currently, in the operation of traditional sulfur dioxide preparation systems, sulfur is fed into the combustion furnace in liquid or gaseous form for complete combustion. After sulfur dioxide flue gas is produced, the moisture and dust in the flue gas are easily accumulated in the cooler and pipes after cooling. This can cause blockages or, in severe cases, corrosion and perforation of the equipment in the system. This undoubtedly increases the maintenance cost of the system and limits the development of the system equipment in related industries.

[0004] Therefore, how to provide a high-efficiency sulfur dioxide preparation system with flue gas purification that can purify sulfur-containing flue gas, reduce the risk of blockage after flue gas cooling, prevent ash from entering the next stage of process, and achieve energy saving and environmental protection has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a high-efficiency sulfur dioxide preparation system with flue gas purification, which can purify sulfur-containing flue gas, reduce the risk of blockage after flue gas cooling, prevent ash from entering the next stage process, and achieve energy saving and environmental protection.

[0006] The technical solution provided by this utility model is as follows:

[0007] This utility model provides a high-efficiency sulfur dioxide preparation system with flue gas purification, comprising: a sulfur melting box; a pumping box connected to the sulfur melting box; a gasification combustion chamber disposed at the output end of the pumping box; a gas chamber blower connected to the input end of the gasification combustion chamber; a flue gas mixing pipe disposed at the output end of the gasification combustion chamber; a combustion furnace connected to the output end of the flue gas mixing pipe; an air distribution pipe disposed above the combustion furnace; a blower disposed at the input end of the air distribution pipe; a first air supply pipe connected at one end to the air distribution pipe and at the other end to the combustion furnace; a second air supply pipe connected at one end to the air distribution pipe and at the other end to the flue gas mixing pipe; a cooling assembly disposed at the output end of the combustion furnace; a purification tower disposed at the output end of the cooling assembly; and an atomizing spray assembly connected to the purification tower.

[0008] Furthermore, in a preferred embodiment of the present invention, the cooling assembly includes:

[0009] A primary cooler is installed at the output end of the combustion furnace;

[0010] One end is connected to the primary cooler, and the other end is connected to the secondary cooler of the purification tower.

[0011] Furthermore, in a preferred embodiment of this invention, the purification tower comprises:

[0012] Support tower;

[0013] The vertical tower body is mounted on the supporting tower frame;

[0014] A flue gas inlet is located on the lower side wall of the vertical tower body and connected to the cooling assembly;

[0015] The slag discharge port is located at the bottom of the vertical tower body;

[0016] A slag discharge pump is installed at the slag discharge port;

[0017] The flue gas outlet is located at the top of the vertical tower.

[0018] Furthermore, in a preferred embodiment of this utility model, the supporting tower includes:

[0019] Vertical rack;

[0020] Ladder assembly installed on the side wall of the vertical frame;

[0021] A multi-level support platform arranged in parallel on the vertical frame;

[0022] Guardrail components are installed on the support platform.

[0023] Furthermore, in a preferred embodiment of this invention, the atomizing spray assembly includes:

[0024] Atomizing nozzles installed in the purification tower;

[0025] The atomizing nozzles are provided in multiple ways, and the multiple atomizing nozzles are evenly spaced from top to bottom;

[0026] The spray pipe connected to the atomizing nozzle;

[0027] A circulating pump assembly is installed at the inlet end of the spray pipe;

[0028] The circulation tank is connected to the circulation pump assembly;

[0029] One end is connected to the circulation box, and the other end is connected to the return pipe of the purification tower.

[0030] Furthermore, in a preferred embodiment of this utility model, the circulation box includes: a first circulation box; and a second circulation box communicating with the first circulation box;

[0031] The circulating pump assembly includes: a first circulating pump with one end connected to the spray pipe and the other end connected to the first circulating tank; and a second circulating pump with one end connected to the spray pipe and the other end connected to the second circulating tank.

[0032] Furthermore, in a preferred embodiment of this utility model, the first air supply duct includes:

[0033] The first air supply branch pipe is installed at the output end of the air distribution pipe;

[0034] The second and third air supply branches are located at the output end of the air distribution duct and are arranged parallel to the first air supply branch duct.

[0035] Furthermore, in a preferred embodiment of this utility model, the combustion chamber comprises:

[0036] case;

[0037] The primary combustion chamber is located inside the housing and connected to the first air supply branch pipe;

[0038] The primary combustion chamber is connected to the flue gas mixing pipe;

[0039] The secondary combustion chamber is located at the rear end of the primary combustion chamber and is connected to the second air supply branch pipe;

[0040] The third-stage combustion chamber is located at the rear end of the second-stage combustion chamber and is connected to the third air supply branch pipe;

[0041] The fourth-stage combustion chamber is located at the rear end of the third-stage combustion chamber;

[0042] Water-cooled jackets are disposed inside the housing and fitted onto the primary combustion chamber, secondary combustion chamber, tertiary combustion chamber, and quaternary combustion chamber.

[0043] Furthermore, in a preferred embodiment of this utility model, the fan includes:

[0044] The first air distribution fan is installed at the input end of the air distribution duct;

[0045] The second air distribution fan is located at the input end of the air distribution duct and is connected in parallel with the first air distribution fan.

[0046] Furthermore, in a preferred embodiment of this utility model, the sulfur melting box, pumping box, gasification combustion chamber, gas chamber blower, air distribution fan, cooling assembly, purification tower, and atomizing spray assembly are connected to an external PLC mechanism.

[0047] This utility model provides a high-efficiency sulfur dioxide preparation system with flue gas purification, comprising: a sulfur melting box; a pumping box connected to the sulfur melting box; a gasification combustion chamber disposed at the output end of the pumping box; a gas chamber blower connected to the input end of the gasification combustion chamber; a flue gas mixing pipe disposed at the output end of the gasification combustion chamber; a combustion furnace connected to the output end of the flue gas mixing pipe; an air distribution pipe disposed above the combustion furnace; a blower disposed at the input end of the air distribution pipe; a first air supply pipe connected at one end to the air distribution pipe and at the other end to the combustion furnace; a second air supply pipe connected at one end to the air distribution pipe and at the other end to the flue gas mixing pipe; a cooling assembly disposed at the output end of the combustion furnace; a purification tower disposed at the output end of the cooling assembly; and an atomizing spray assembly connected to the purification tower.The high-efficiency sulfur dioxide preparation system with flue gas purification disclosed in this utility model comprises a sulfur melting box, a pumping box, a gasification combustion chamber, a gas chamber blower, a flue gas mixing pipe, a combustion furnace, an air distribution pipe, a blower, a first air conveying pipe, a second air conveying pipe, a cooling assembly, a purification tower, and an atomizing spray assembly. During sulfur dioxide preparation, sulfur is placed in the sulfur melting box and melted into liquid sulfur by heating. The pumping box and the gasification combustion chamber are connected sequentially after the sulfur melting box. The pumping box is used to transport the liquid sulfur to the gasification combustion chamber. In the combustion chamber, the gasification combustion chamber is used to gasify liquid sulfur; the gas chamber supply fan is installed at the input end of the gasification combustion chamber to provide combustion air. Before the liquid sulfur gasification process, the gasification combustion chamber is preheated by electricity to reach the liquid sulfur gasification temperature. Subsequently, the liquid sulfur is pumped into the gasification combustion chamber through a pump box for gasification. During the gasification process, the gas chamber supply fan supplies a fixed amount of air to the gasification combustion chamber, causing a portion to burn. This allows the gasification combustion chamber to shut off the electrical energy required for gasification heating while maintaining the gasification temperature. Secondly... At the output end of the gasification combustion chamber, the flue gas mixing pipe and the combustion furnace are installed sequentially. Sulfur gas in the gasification combustion chamber is transported to the combustion furnace through the flue gas pipe. The air distribution fan provides combustion air to the combustion furnace through the air distribution pipe, the first air supply pipe, and the second air supply pipe, allowing the sulfur gas and combustion air to mix and undergo secondary combustion in the furnace to produce sulfur dioxide flue gas. Because the sulfur input to the combustion furnace is gaseous, combustion efficiency can be effectively improved compared to traditional liquid sulfur injection combustion. Subsequently, high-temperature sulfur-containing flue gas exits from the... The flue gas exits from the combustion furnace and enters the cooling assembly, where it is cooled. After cooling, the sulfur dioxide flue gas enters the purification tower, rising from bottom to top. The purification tower is equipped with an atomizing spray assembly that evenly sprays atomized water into the combustion furnace. The flue gas can fully contact the atomized water within the purification tower, purifying it. Dust and water in the flue gas fall to the bottom of the tower, while the separated ash is discharged from the bottom. The purified flue gas exits from the top of the purification tower and enters the next stage of the process, achieving energy saving and environmental protection. Therefore, the technical solution provided by this utility model, compared to existing technologies, can purify sulfur-containing flue gas, reduce the risk of blockage after flue gas cooling, prevent ash from entering the next stage of the process, and achieve energy saving and environmental protection. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A three-dimensional structural schematic diagram of the high-efficiency sulfur dioxide preparation system with flue gas purification provided in this embodiment of the present invention;

[0050] Figure 2 A top view of the high-efficiency sulfur dioxide preparation system with flue gas purification provided in an embodiment of this utility model;

[0051] Figure 3 A schematic diagram of the installation structure of the combustion furnace provided in an embodiment of this utility model;

[0052] Figure 4 A schematic diagram of the structure of the purification tower provided in this embodiment of the utility model. Figure 1 ;

[0053] Figure 5 A schematic diagram of the structure of the purification tower provided in this embodiment of the utility model. Figure 2 .

[0054] Explanation of reference numerals in the attached figures:

[0055] 1. Sulfur melting box; 2. Pumping box; 3. Gasification combustion chamber; 4. Gas chamber blower; 5. Flue gas mixing pipe; 6. Combustion furnace; 601. Primary combustion chamber; 602. Secondary combustion chamber; 603. Tertiary combustion chamber; 604. Quaternary combustion chamber; 7. Air distribution pipe; 8. Blower; 801. First blower; 802. Second blower; 9. First air supply pipe; 10. Second air supply pipe; 11. Cooling assembly; 12. Purification tower; 13. Atomizing spray assembly; 14. PLC mechanism; 15. Support tower; 16. Vertical tower body; 17. Flue gas inlet; 18. Slag discharge port; 19. Slag discharge pump; 20. Flue gas outlet; 21. Vertical frame; 22. Ladder assembly; 23. Support platform; 24. Guardrail assembly; 25. Spray pipe; 26. Circulation pump assembly; 27. Circulation box; 28. Return pipe; 29. ​​First circulation pump; 30. Second circulation pump; 31. First circulation box; 32. Second circulation box. Detailed Implementation

[0056] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0057] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0058] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "first", "second", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0060] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0061] like Figures 1 to 5 As shown, the high-efficiency sulfur dioxide preparation system with flue gas purification provided in this embodiment of the present invention includes: a sulfur melting box 1, a pumping box 2, a gasification combustion chamber 3, a gas chamber blower 4, a flue gas mixing pipe 5, a combustion furnace 6, an air distribution pipe 7, a blower 8, a first air supply pipe 9, a second air supply pipe 10, a cooling component 11, a purification tower 12, and the atomizing spray component 13.

[0062] This invention provides a high-efficiency sulfur dioxide preparation system with flue gas purification, which aims to solve the blockage problem caused by high-temperature sulfur-containing flue gas after cooling, while purifying the sulfur dioxide flue gas and preventing ash from entering the next process and affecting product quality. The high-efficiency sulfur dioxide preparation system with flue gas purification specifically includes: a sulfur melting box 1; a pumping box 2 connected to the sulfur melting box 1; a gasification combustion chamber 3 located at the output end of the pumping box 2; a gas chamber blower 4 connected to the input end of the gasification combustion chamber 3; a flue gas mixing pipe 5 located at the output end of the gasification combustion chamber 3; a combustion furnace 6 connected to the output end of the flue gas mixing pipe 5; an air distribution pipe 7 located above the combustion furnace 6; a blower 8 located at the input end of the air distribution pipe 7; a first air supply pipe 9 connected at one end to the air distribution pipe 7 and at the other end to the combustion furnace 6; a second air supply pipe 10 connected at one end to the air distribution pipe 7 and at the other end to the flue gas mixing pipe 5; a cooling assembly 11 located at the output end of the combustion furnace 6; a purification tower 12 located at the output end of the cooling assembly 11; and an atomizing spray assembly 13 connected to the purification tower 12. The technical solution provided by this utility model, compared with the prior art, can purify sulfur-containing flue gas, reduce the risk of blockage after flue gas cooling, prevent ash from entering the next stage of process, and achieve energy saving and environmental protection.

[0063] The technical solution of this utility model will be specifically described below with reference to the embodiments:

[0064] Specifically, in an embodiment of this utility model, the cooling assembly 11 includes: a primary cooler disposed at the output end of the combustion furnace 6; and a secondary cooler connected at one end to the primary cooler and at the other end to the purification tower 12.

[0065] The cooling assembly 11 is used to receive and treat the high-temperature sulfur dioxide flue gas from the combustion furnace 6; for example... Figure 1 , 2 As shown, in this embodiment, the cooling component 11 is a cooler, which consists of a primary cooler and a secondary cooler. After the high-temperature flue gas is cooled down to 200°C by the primary and secondary coolers, it is then fed into the purification tower 12.

[0066] Specifically, in an embodiment of this utility model, the purification tower 12 includes: a support tower 15; a vertical tower body 16 disposed on the support tower 15; a flue gas inlet 17 disposed on the lower side wall of the vertical tower body 16 and connected to the cooling assembly 11; a slag discharge port 18 disposed at the bottom of the vertical tower body 16; a slag discharge pump 19 disposed at the slag discharge port 18; and a flue gas outlet 20 disposed at the top of the vertical tower body 16.

[0067] In this embodiment of the invention, the purification tower 12 is used to purify sulfur dioxide flue gas to prevent dust in the flue gas from causing blockages; such as Figure 4 , 5 As shown, the main structure of the purification tower 12 consists of the supporting tower frame 15, the vertical tower body 16, the flue gas inlet 17, the slag discharge port 18, and the slag discharge pump 19. The supporting tower frame 15 is used to install the vertical tower body 16, fixing the vertical tower body 16 to the supporting tower frame 15. The upper end of the vertical tower body 16 is provided with a flue gas outlet 20, and the lower end is provided with a slag discharge port 18. The flue gas inlet 17 is installed on the lower side wall of the vertical tower body 16, and after cooling down... Sulfur dioxide flue gas is input into the purification tower 12 through the flue gas inlet 17. The flue gas flows from bottom to top. The atomizing spray assembly 13 is used to input circulating water into the purification tower 12 and atomize it. After the flue gas comes into contact with the atomized water, the dust in the flue gas combines with the water to form ash, which falls to the bottom of the tower. The ash can be discharged from the ash discharge port 18 by the ash discharge pump 19. The purified flue gas flows upward and, after being demisted at the top of the tower, is transported to the next process through pipeline.

[0068] Specifically, in an embodiment of this utility model, the support tower 15 includes: a vertical frame 21; a ladder assembly 22 disposed on the side wall of the vertical frame 21; a multi-level support platform 23 disposed parallel to the vertical frame 21; and a guardrail assembly 24 disposed on the support platform 23.

[0069] Specifically, in an embodiment of this utility model, the atomizing spray assembly 13 includes: an atomizing nozzle disposed in the purification tower 12; multiple atomizing nozzles are disposed thereon, and the multiple atomizing nozzles are evenly spaced from top to bottom; a spray pipe 25 connected to the atomizing nozzle; a circulation pump assembly 26 disposed at the input end of the spray pipe 25; a circulation tank 27 connected to the circulation pump assembly 26; and a return pipe 28 connected at one end to the circulation tank 27 and at the other end to the purification tower 12.

[0070] like Figure 4 , 5As shown in this embodiment of the invention, the atomizing spray assembly 13 is used to input atomized water into the purification tower 12 and to use the atomized water to settle dust in the flue gas. The main structure of the atomizing spray assembly 13 consists of atomizing nozzles, spray pipes 25, a circulating pump assembly 26, a circulating tank 27, and a return pipe 28. Three atomizing nozzles are installed inside the purification tower 12, evenly spaced from top to bottom, for spraying atomized water. The spray pipes 25 connect to the atomizing nozzles. A circulation pump assembly 26 is installed at the input end of the spray pipe 25. The circulation pump assembly 26 is connected to the circulation tank 27, which contains circulating liquid water. Using the circulation pump assembly 26 and the spray pipe 25, the liquid water in the circulation tank 27 can be pumped to the atomizing nozzle for atomization output. A return pipe 28 is provided at the bottom of the purification tower 12. The other end of the return pipe 28 is connected to the circulation tank 27. The liquid water in the purification tower 12 can flow back to the circulation tank 27 through the return pipe 28, realizing the recycling of liquid purified water.

[0071] Specifically, in an embodiment of this utility model, the circulation tank 27 includes: a first circulation tank 31; a second circulation tank 32 connected to the first circulation tank 31; the circulation pump assembly 26 includes: a first circulation pump 29 with one end connected to the spray pipe 25 and the other end connected to the first circulation tank 31; and a second circulation pump 30 with one end connected to the spray pipe 25 and the other end connected to the second circulation tank 32.

[0072] Specifically, in an embodiment of this utility model, the first air supply duct 9 includes: a first air supply branch duct disposed at the output end of the air distribution duct 7; and a second and a third air supply branch duct disposed at the output end of the air distribution duct 7 and disposed parallel to the first air supply branch duct.

[0073] In this embodiment, the air distribution duct 7 is used to connect the air distribution fan 8. The first air supply branch duct, the second air supply branch duct, and the third air supply branch duct are arranged side by side at the output end of the air distribution duct 7. Each air supply branch duct is connected to a combustion chamber of the combustion furnace 6. Through multiple air supply branch ducts, combustion air can be provided to each combustion chamber, so that high-temperature sulfur gas can be mixed with air for combustion reaction.

[0074] Specifically, in an embodiment of this utility model, the combustion chamber 6 includes: a shell; a primary combustion chamber 601 disposed within the shell and connected to the first air supply branch pipe; the primary combustion chamber 601 communicating with the flue gas mixing pipe 5; a secondary combustion chamber 602 disposed at the rear end of the primary combustion chamber 601 and connected to the second air supply branch pipe; a tertiary combustion chamber 603 disposed at the rear end of the secondary combustion chamber 602 and connected to the third air supply branch pipe; a quaternary combustion chamber 604 disposed at the rear end of the tertiary combustion chamber 603; and a water-cooling jacket disposed within the shell and fitted onto the primary combustion chamber 601, the secondary combustion chamber 602, the tertiary combustion chamber 603, and the quaternary combustion chamber 604.

[0075] like Figure 3 As shown in this embodiment of the invention, the combustion chamber 6 adopts a structure combining multi-stage combustion chambers and external cooling. The multi-stage combustion chambers are divided into a primary combustion chamber 601, a secondary combustion chamber 602, a tertiary combustion chamber 603, and a quaternary combustion chamber 604. Each stage of the combustion chamber is interconnected. High-temperature sulfur gas and flue gas enter the primary combustion chamber 601 through the flue gas mixing pipe 5 and mix with the air supplied by the blower 8 to carry out the combustion reaction without the need for ignition, thus ensuring personnel safety. Sulfur gas that has not been fully reacted in the primary combustion chamber 601 can enter the next stage combustion chamber 601 for further reaction. By analogy, the combustion efficiency of sulfur gas is greatly improved. The combustion chamber inside the shell is made of refractory material, which has a long service life and can reduce costs. It can meet the conditions required for high-temperature and rapid combustion reaction, and the temperature is maintained between 450°C and 500°C. The sulfur dioxide flue gas produced is output to the cooling component 11 for cooling treatment. There is no risk of leakage and no waste gas overflow, which is energy-saving and environmentally friendly. Secondly, the water-cooled jacket is installed outside each stage of the combustion chamber. The water-cooled jacket can meet the initial cooling requirements after combustion and remove some heat during the sulfur gas combustion reaction, so that the combustion chamber is always maintained at the temperature required for sulfur gas combustion.

[0076] Specifically, in an embodiment of this utility model, the air distribution fan 8 includes: a first air distribution fan 801 disposed at the input end of the air distribution duct 7; and a second air distribution fan 802 disposed at the input end of the air distribution duct 7 and connected in parallel with the first air distribution fan 801.

[0077] Specifically, in the embodiments of this utility model, the sulfur melting box 1, pumping box 2, gasification combustion chamber 3, gas chamber blower, air distribution fan 8, cooling assembly 11, purification tower 12, and atomizing spray assembly 13 are connected to the external PLC mechanism 14.

[0078] In this embodiment of the utility model, the electrical control equipment and electrical control components in the system are all connected to the PLC mechanism 14 of the peripheral device. The PLC mechanism 14 of the peripheral device is used as the main control unit to link the combustion furnace 6 and the purification tower 12. After the parameters are manually set, the PLC mechanism 14 can realize one-button start and stop, which improves the level of automation and production efficiency.

[0079] Specifically, in the embodiments of this utility model, the operation of purifying sulfur dioxide flue gas using the high-efficiency sulfur dioxide preparation system with flue gas purification is as follows: solid sulfur is added to the sulfur melting tank. After the sulfur melting tank 1 is energized, it dissolves into liquid sulfur. The PLC mechanism 14 is activated based on external signals or manual input of combustion quantity, causing the gasification combustion chamber 3 to enter the preheating state. After reaching the set temperature of 450°C, the gas chamber blower 4 and the pumping box 2 are started. The liquid sulfur is converted into a gaseous state in the gasification combustion chamber 3 and then transported to the combustion furnace 6. At the same time, the distribution fan 8 is started to provide combustion air and sulfur gas. The supply and distribution fan 8 operates automatically with frequency conversion according to the feed rate calculated by the PLC mechanism 14. After the gasified sulfur enters the furnace, it mixes with the air and continues to burn. Some heat is removed by the water-cooled jacket, so that the internal combustion temperature is always maintained at 450℃-500℃. After the combustion reaction is completed, the sulfur dioxide flue gas enters the first-stage cooler and the second-stage cooler respectively to be cooled to 200℃, and then enters the purification tower 12 to mix with atomized water. The ash is washed to the bottom of the tower and stored. At this time, the flue gas temperature drops to 60℃ and is connected to the flue gas outlet 20 pipeline to be transported to the next process. The ash in the purification tower 12 is discharged from the bottom.

[0080] As described above, the high-efficiency sulfur dioxide preparation system with flue gas purification provided by this utility model embodiment adopts a combination of a sulfur combustion furnace, a cooler, and a purification tower 12. It aims to solve the blockage problem caused by high-temperature sulfur-containing flue gas after cooling, while simultaneously purifying the sulfur dioxide flue gas to prevent ash from entering subsequent processes and affecting product quality. The main structure of the high-efficiency sulfur dioxide preparation system with flue gas purification disclosed in this utility model consists of the sulfur melting box 1, a pumping box 2, a gasification combustion chamber 3, a gas chamber blower 4, a flue gas mixing pipe 5, a combustion furnace 6, an air distribution pipe 7, a blower 8, a first air supply pipe 9, a second air supply pipe 10, a cooling assembly 11, a purification tower 12, and an atomizing spray assembly 13. During sulfur dioxide preparation, sulfur is placed in the sulfur melting box 1 and melted into liquid sulfur by heating. The pumping box 2 and the gasification combustion chamber 3 are connected sequentially after the sulfur melting box 1. The pumping box 2 is used to transport the liquid sulfur... The liquid sulfur is fed into the gasification combustion chamber 3, which is used to gasify the liquid sulfur. The gas chamber air supply fan 4 is installed at the input end of the gasification combustion chamber 3 to provide combustion air. Before the liquid sulfur gasification process, the gasification combustion chamber 3 is preheated by electricity to reach the liquid sulfur gasification temperature. Then, the liquid sulfur is pumped into the gasification combustion chamber 3 through the pump box 2 for gasification. During the gasification process, the gas chamber air supply fan 4 supplies a fixed amount of air to the gasification combustion chamber 3, causing a portion of it to burn. This allows the gasification combustion chamber 3 to shut off the electrical energy required for gasification heating while maintaining the gasification temperature. Next, at the output end of the gasification combustion chamber 3, the flue gas mixing pipe 5 and the combustion furnace 6 are installed sequentially. The sulfur gas in the gasification combustion chamber 3 is transported to the combustion furnace 6 through the flue gas pipe. The air distribution fan 8 provides combustion air to the combustion furnace 6 through the air distribution pipe 7, the first air supply pipe 9, and the second air supply pipe 10, allowing the sulfur gas and combustion air to mix and undergo secondary combustion in the furnace to produce sulfur dioxide flue gas. Since the sulfur input to the combustion furnace 6 is gaseous, compared with traditional liquid sulfur injection combustion, the combustion efficiency can be effectively improved. Subsequently, high-temperature sulfur-containing flue gas exits from the combustion furnace 6... The flue gas exits from the furnace 6 and enters the cooling assembly 11, where it is cooled. After cooling, the sulfur dioxide flue gas enters the purification tower 12. The flue gas rises from bottom to top. The purification tower 12 is equipped with an atomizing spray assembly 13, which evenly sprays atomized water into the combustion furnace 6. The flue gas can fully contact the atomized water within the purification tower 12, purifying the flue gas. Dust and water in the flue gas fall to the bottom of the tower, while the separated ash is discharged from the bottom. The purified flue gas exits from the top of the purification tower 12 and enters the next stage of the process, achieving energy saving and environmental protection. Therefore, the technical solution provided by this utility model, compared to existing technologies, can purify sulfur-containing flue gas, reduce the risk of blockage after flue gas cooling, prevent ash from entering the next stage of the process, and achieve energy saving and environmental protection.

[0081] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-efficiency sulfur dioxide preparation system with flue gas purification, characterized in that, include: Sulfur melting box; The pump box connected to the sulfur melting box; A gasification combustion chamber is located at the output end of the pump box; A gas chamber blower is connected to the input end of the gasification combustion chamber; A flue gas mixing pipe is installed at the output end of the gasification combustion chamber; The combustion chamber is connected to the output end of the flue gas mixing pipe; The air distribution duct is installed above the combustion furnace; A fan installed at the input end of the air distribution duct; One end is connected to the air distribution duct, and the other end is connected to the first air supply duct of the combustion furnace; A second air duct that connects to the air distribution duct at one end and to the flue gas mixing duct at the other end; A cooling assembly is installed at the output end of the combustion furnace; A purification tower is installed at the output end of the cooling component; Atomizing spray assembly connected to the purification tower.

2. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 1, characterized in that, The cooling assembly includes: A primary cooler is installed at the output end of the combustion furnace; One end is connected to the primary cooler, and the other end is connected to the secondary cooler of the purification tower.

3. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 1, characterized in that, The purification tower includes: Support tower; The vertical tower body is mounted on the supporting tower. A flue gas inlet is located on the lower side wall of the vertical tower body and connected to the cooling assembly; The slag discharge port is located at the bottom of the vertical tower body; A slag discharge pump is installed at the slag discharge port; The flue gas outlet is located at the top of the vertical tower.

4. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 3, characterized in that, The supporting tower includes: Vertical rack; Ladder assembly installed on the side wall of the vertical frame; A multi-level support platform arranged in parallel on the vertical frame; Guardrail components are installed on the support platform.

5. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 3, characterized in that, The atomizing spray assembly includes: Atomizing nozzles installed in the purification tower; The atomizing nozzles are provided in multiple ways, and the multiple atomizing nozzles are evenly spaced from top to bottom; The spray pipe connected to the atomizing nozzle; A circulating pump assembly is installed at the inlet end of the spray pipe; The circulation tank is connected to the circulation pump assembly; One end is connected to the circulation box, and the other end is connected to the return pipe of the purification tower.

6. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 5, characterized in that, The circulation tank includes: a first circulation tank; and a second circulation tank connected to the first circulation tank. The circulating pump assembly includes: a first circulating pump with one end connected to the spray pipe and the other end connected to the first circulating tank; and a second circulating pump with one end connected to the spray pipe and the other end connected to the second circulating tank.

7. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 1, characterized in that, The first air supply duct includes: The first air supply branch pipe is installed at the output end of the air distribution pipe; The second and third air supply branches are located at the output end of the air distribution duct and are arranged parallel to the first air supply branch duct.

8. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 7, characterized in that, The combustion chamber includes: case; The primary combustion chamber is located inside the housing and connected to the first air supply branch pipe; The primary combustion chamber is connected to the flue gas mixing pipe; The secondary combustion chamber is located at the rear end of the primary combustion chamber and is connected to the second air supply branch pipe; The third-stage combustion chamber is located at the rear end of the second-stage combustion chamber and is connected to the third air supply branch pipe; The fourth-stage combustion chamber is located at the rear end of the third-stage combustion chamber; Water-cooled jackets are disposed inside the housing and fitted onto the primary combustion chamber, secondary combustion chamber, tertiary combustion chamber, and quaternary combustion chamber.

9. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 1, characterized in that, The fan includes: The first air distribution fan is installed at the input end of the air distribution duct; The second air distribution fan is located at the input end of the air distribution duct and is connected in parallel with the first air distribution fan.

10. The high-efficiency sulfur dioxide preparation system with flue gas purification according to claim 1, characterized in that, The sulfur melting box, pumping box, gasification combustion chamber, gas chamber blower, air distribution fan, cooling components, purification tower, and atomizing spray components are connected to the external PLC mechanism.

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