Mixing and cooling device for sulfur gas of sulfur burning furnace of sugar refinery

Abstract

The utility model discloses a mixing and cooling device for sulfur gas of a sulfur burning furnace of a sugar refinery, which comprises a sulfur gas cooling frame mechanism, an industrial cooler is arranged on the left side of the sulfur gas cooling frame mechanism, the cooling output end of the industrial cooler is connected with six cooling pipes, the bottom surface of the sulfur gas cooling frame mechanism is fixedly connected with a support, and the support is fixedly connected with the industrial cooler. And the right side of the sulfur gas cooling frame mechanism is fixedly connected with a maintenance crawling ladder. According to the technical scheme, the industrial cooler is adopted to be matched with the multiple cooling pipes, refrigerants are provided for the cooling coil and the S-shaped cooling pipes, efficient heat exchange is achieved, and the sulfur gas temperature can be rapidly reduced. Fins are arranged outside the cooling coil, the contact area with sulfur gas is increased, and the cooling efficiency is further improved. A purified water solution is injected into the water cooling purification tank, sulfur gas heat can be adsorbed, cooled and solidified sulfur solids can be cleaned, the gas collecting hood effectively collects sulfur gas and guides the sulfur gas to the water cooling purification tank, and dissipation of the sulfur gas is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of sulfur gas treatment equipment for sulfur combustion furnaces, specifically to a mixing and cooling device for sulfur gas from a sugar factory's sulfur combustion furnace. Background Technology

[0002] In sugar mill production, sulfur combustion furnaces are used to burn sulfur to produce sulfur dioxide gas, an important auxiliary agent in the sugar refining process. However, traditional sulfur gas cooling methods face several problems. On the one hand, incomplete combustion of sulfur in the furnace produces sublimated sulfur, which easily condenses in the pipes during cooling, forming scale that blocks the pipes and affects the cooling effect. On the other hand, sulfur trioxide in the sulfur gas combines with condensate during cooling to form sulfuric acid, which corrodes the pipes and enters the sugar juice in subsequent processes, forming sulfates, increasing evaporation and scale buildup, and affecting the production process and product quality. To address these background technical problems, this technical solution provides a mixed cooling device for sulfur gas from a sugar mill sulfur combustion furnace. Summary of the Invention

[0003] The purpose of this utility model is to provide a technical solution for a mixing and cooling device for sulfur gas from a sulfur combustion furnace in a sugar factory, thereby addressing the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] It includes a sulfur cooling frame mechanism, an industrial cooler is provided on the left side of the sulfur cooling frame mechanism, the cooling output end of the industrial cooler is connected to 6 cooling pipes, a bracket is fixedly connected to the bottom surface of the sulfur cooling frame mechanism, and a maintenance ladder is fixedly connected to the right side of the sulfur cooling frame mechanism.

[0005] The sulfur cooling frame mechanism includes a square frame, a top plate and a bottom plate fixed to the top and bottom of the square frame. An outlet port is fixed on the upper surface of the top plate, and a sulfur inlet pipe is connected to the lower surface of the bottom plate. A water-cooled purification tank is fixed at the top of the inner cavity of the square frame. Two cooling coils are fixed in the middle and bottom sections of the inner cavity of the square frame, and multiple fins are fixed on the outer surface of the cooling coils.

[0006] The water-cooled purification tank has a serpentine cooling pipe fixed inside its cavity, and a gas collection hood fixed at the bottom of the water-cooled purification tank. A one-way check valve is connected to the bottom port of the water-cooled purification tank. The refrigerant input / output ends of the cooling coil and the serpentine cooling pipe are respectively connected to the ends of the cooling pipe.

[0007] As a preferred embodiment of this utility model: six through holes are provided on the left side wall of the square frame for the cooling pipes to pass through, and a through hole is provided on the left side of the outer ring of the water-cooled purification tank for the cooling pipes connected to the serpentine cooling pipes to pass through.

[0008] As a preferred embodiment of this utility model: the inner cavity of the water-cooled purification tank is provided with a pure aqueous solution, which is used to adsorb the heat of sulfur gas and clean the solidified sulfur after cooling.

[0009] As a preferred embodiment of this utility model: the end of the sulfur inlet pipe away from the bottom plate is connected to the sulfur gas conveying pipe of the sulfur combustion furnace.

[0010] As a preferred embodiment of this utility model, the serpentine cooling pipe and the cooling coil have multiple gaps between them for sulfur gas to pass through.

[0011] As a preferred embodiment of this utility model: the outer surface of the gas collection hood is fixedly connected to the inner cavity sidewall of the square frame, and the top port of the gas collection hood is connected to the bottom port of the water-cooled purification tank.

[0012] As a preferred embodiment of this utility model, the top port of the water-cooled purification tank is connected to the bottom port of the air outlet.

[0013] As a preferred embodiment of this utility model: the one-way check valve prevents the solution inside the water-cooled purification tank from flowing back in, and the one-way check valve controls the sulfur gas to enter the water-cooled purification tank from bottom to top.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] This technical solution employs an industrial cooler in conjunction with multiple cooling pipes to provide refrigerant for the cooling coils and serpentine cooling pipes, achieving efficient heat exchange and rapidly reducing the temperature of sulfur gas. Fins are installed on the outside of the cooling coils to increase the contact area with the sulfur gas, further improving cooling efficiency. A water-cooled purification tank is filled with a pure aqueous solution, which not only absorbs the heat from the sulfur gas but also cleans the solidified sulfur. A gas collection hood effectively collects the sulfur gas and guides it to the water-cooled purification tank, preventing sulfur gas escape. The overall device has a compact structure and reasonable layout, with all components working collaboratively to effectively solve the problem of sulfur gas cooling and purification in sugar mill sulfur furnaces, improving production safety and environmental protection. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the hybrid cooling device;

[0018] Figure 2 This is a schematic diagram of an industrial cooler;

[0019] Figure 3 This is a schematic diagram of the sulfur gas cooling frame mechanism;

[0020] Figure 4 This is a schematic diagram of the sulfur gas cooling frame mechanism after disassembly.

[0021] Figure 5 This is a schematic diagram of the internal structure of a water-cooled purification tank.

[0022] Figure 6 This is a schematic diagram of the cooling coil.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Sulfur cooling frame mechanism; 11. Square frame; 12. Gas outlet port; 13. Top plate; 14. Water-cooled purification tank; 15. Sulfur inlet pipe; 16. Base plate; 17. Cooling coil; 18. Gas collection hood; 19. One-way check valve; 110. Serpentine cooling pipe; 111. Fins; 2. Industrial cooler; 3. Cooling pipe; 4. Support frame; 5. Maintenance ladder. Detailed Implementation

[0025] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0026] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0027] In Example 1, the sulfur cooling frame mechanism 1 has a relatively small overall size to accommodate limited workshop space. The support 4 is welded from angle steel and coated with anti-rust paint to ensure good corrosion resistance in a humid sulfur environment. The industrial cooler 2 is a small air-cooled cooler, and its cooling output end is connected to six stainless steel cooling pipes 3. The pipe diameter is designed to be moderate according to cooling requirements to ensure refrigerant flow and cooling effect. The six through holes on the left side wall of the square frame 11 fit tightly with the cooling pipes 3, and the sealing gaskets ensure the sealing of the connection to prevent sulfur leakage. The water-cooled purification tank 14 is filled with pure aqueous solution. The solution volume is calculated according to the tank volume, which can effectively absorb the heat of sulfur gas and clean the solidified sulfur after cooling. The end of the sulfur inlet pipe 15 away from the bottom plate 16 is connected to the sulfur gas delivery pipe of the sulfur combustion furnace by a flange, and a sealing gasket is installed at the connection to ensure smooth and safe sulfur delivery. Multiple gaps between the cooling coil 17 and the serpentine cooling pipe 110, allowing sulfur gas to pass through, ensure both the flow of sulfur gas and sufficient contact between the sulfur gas and the cooling pipes, thus improving cooling efficiency. The outer surface of the gas collecting hood 18 is welded to the inner wall of the square frame 11, and its top port is threaded to the bottom port of the water-cooled purification tank 14 for easy disassembly and cleaning. A one-way check valve 19 is installed at the bottom port of the water-cooled purification tank 14. Its sealing performance has been rigorously tested to effectively prevent backflow of the solution inside the water-cooled purification tank while ensuring that sulfur gas enters the water-cooled purification tank from bottom to top. The top port of the water-cooled purification tank 14 is connected to the bottom port of the outlet port 12 via a flange, and a sealing gasket is installed at the connection to ensure that the cooled and purified sulfur gas can be discharged smoothly.

[0028] Example 2 involves upgrading and optimizing the device. The overall size of the sulfur cooling frame mechanism 1 is increased to meet the needs of large-scale sulfur cooling. The support 4 is welded from channel steel, making the structure more stable and able to withstand greater weight and vibration. The industrial cooler 2 is a large water-cooled cooler with stronger cooling capacity, and the diameter of the six cooling pipes 3 connected to its cooling output end is correspondingly increased to improve the flow rate of the refrigerant. Two cooling coils 17 are installed in the inner cavity of the square frame 11, and the length and diameter of the cooling coils are increased to increase the cooling area. The inner cavity size of the water-cooled purification tank 14 is also correspondingly increased, allowing for a larger volume of pure aqueous solution to be injected. A stirring device is installed inside the water-cooled purification tank to periodically stir the solution, improving the adsorption of sulfur heat and the cleaning effect on sulfur solids. The sulfur inlet pipe 15 uses thickened tubing to improve its pressure resistance and corrosion resistance. The number and density of the fins 111 of the cooling coils 17 and the serpentine cooling pipes 110 are increased, further increasing the contact area with the sulfur and improving cooling efficiency. The gas collection hood 18 has been enlarged and its shape optimized for more efficient sulfur gas collection. The one-way check valve 19 uses high-performance sealing materials for more reliable sealing performance.

[0029] In Example 3, considering the presence of impurities and acidic gases in the sulfur gas, higher requirements are placed on the corrosion resistance of the device. Key components of the sulfur gas cooling frame mechanism 1, such as the square frame 11, top plate 13, bottom plate 16, cooling coil 17, and serpentine cooling pipe 110, are all made of 316L stainless steel, a material with excellent corrosion resistance and high-temperature resistance. The outer shell and internal pipes of the industrial cooler 2 are also made of stainless steel to resist corrosion from sulfur gas and impurities. An appropriate amount of corrosion inhibitor is added to the pure aqueous solution injected into the inner cavity of the water-cooled purification tank 14 to further protect the tank's interior from corrosion. The surfaces of the sulfur gas inlet pipe 15 and the cooling pipe 3 undergo special anti-corrosion treatment, such as spraying a ceramic coating, to improve their corrosion resistance.

[0030] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows:

[0031] Sulfur gas is discharged from the sulfur combustion furnace and enters the sulfur gas cooling frame mechanism 1 through the sulfur gas inlet pipe 15. The end of the sulfur gas inlet pipe 15 away from the bottom plate 16 is connected to the sulfur gas delivery pipe of the sulfur combustion furnace, allowing the sulfur gas to be smoothly introduced. After the sulfur gas enters the inner cavity of the square frame 11, some of the sulfur gas flows upward and first contacts the serpentine cooling pipe 110 on the left side of the outer ring of the water-cooled purification tank 14. There are multiple gaps between the serpentine cooling pipe 110 and the cooling coil 17 for the sulfur gas to pass through. The sulfur gas shuttles through these gaps and exchanges heat with the refrigerant in the serpentine cooling pipe 110, initially reducing its temperature. The refrigerant input / output end of the serpentine cooling pipe 110 is connected to the end of the cooling pipe 3. The refrigerant output from the industrial cooler 2 is transported to the serpentine cooling pipe 110 through 6 cooling pipes 3, where it absorbs heat from the sulfur gas, its temperature rises, and then it flows back to the industrial cooler 2 for cooling circulation.

[0032] Another portion of the sulfur gas comes into contact with two cooling coils 17 in the middle and lower sections of the inner cavity of the square frame 11. Multiple fins 111 are fixed to the outer surface of the cooling coils 17, increasing the contact area with the sulfur gas and further promoting heat exchange. The refrigerant for the cooling coils 17 also comes from the industrial cooler 2, transported through the cooling pipes 3, and flows back to the industrial cooler 2 for recooling after absorbing heat from the sulfur gas. After being cooled by the cooling coils 17 and the serpentine cooling pipes 110, some of the solidified sulfur may adhere to the pipes and components. The pure aqueous solution injected into the inner cavity of the water-cooled purification tank 14 can clean these solidified sulfur particles while continuing to absorb the remaining heat from the sulfur gas.

[0033] After further cooling and purification within the water-cooled purification tank 14, the sulfur gas flows out from the top port of the tank, which is connected to the bottom port of the outlet port 12, allowing the cooled and purified sulfur gas to exit the device through the outlet port 12. At the bottom of the water-cooled purification tank 14, a one-way check valve 19 is connected to its bottom port. This valve prevents backflow of the solution inside the tank and controls the sulfur gas to flow upwards, ensuring the flow direction of the sulfur gas and the normal operation of the device. The outer surface of the gas collecting hood 18 is fixedly connected to the inner wall of the square frame 11, and its top port is connected to the bottom port of the water-cooled purification tank 14, serving to collect and guide the sulfur gas into the tank.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A mixing and cooling device for sulfur gas of a sulfur burning furnace of a sugar factory, comprising a sulfur gas cooling frame structure (1), characterized in that: The left side of the sulfur gas cooling frame mechanism (1) is provided with an industrial cooler (2), the cooling output end of the industrial cooler (2) is connected with six cooling pipes (3), the bottom surface of the sulfur gas cooling frame mechanism (1) is fixedly connected with a support (4), and the right side of the sulfur gas cooling frame mechanism (1) is fixedly connected with an overhaul ladder (5). The sulfur gas cooling frame mechanism (1) comprises a square frame (11), a top plate (13) and a bottom plate (16) fixed at the top and bottom of the square frame (11), an air outlet port (12) is fixed to the upper surface of the top plate (13), a sulfur gas inlet pipe (15) is connected to the lower surface of the bottom plate (16), a water-cooled purification tank (14) is fixed to the top inner cavity of the square frame (11), two cooling coils (17) are fixed to the middle and bottom sections of the inner cavity of the square frame (11), and a plurality of fins (111) are fixed to the outer surface of the cooling coils (17). The inner cavity of the water-cooled purification tank (14) is fixed with a serpentine cooling pipe (110), the bottom of the water-cooled purification tank (14) is fixed with a gas collecting cover (18), and the bottom port of the water-cooled purification tank (14) is connected with a one-way check valve (19); wherein the cooling coil (17) and the serpentine cooling pipe (110) are respectively connected with the end of the cooling pipe (3).

2. The combined cooling arrangement for sugar factory sulphur furnace gas as claimed in claim 1 wherein: Six through holes are formed in the left side wall of the square frame (11) for the cooling pipe (3) to pass through, and a through hole is formed in the left side of the outer circle of the water-cooled purification tank (14) for the cooling pipe (3) connected to the serpentine cooling pipe (110) to pass through.

3. The combined cooling arrangement for sulphur gas of sugar factory sulphur furnace as claimed in claim 1 wherein: The inner cavity of the water-cooled purification tank (14) is provided with a pure water solution for absorbing sulfur gas heat and cleaning the cooled and solidified sulfur solid.

4. The combined cooling arrangement for sulphur gas of sugar factory sulphur furnace as claimed in claim 1 wherein: The end of the sulfur gas inlet pipe (15) away from the bottom plate (16) is connected with a sulfur gas conveying pipe of a sulfur combustion furnace.

5. The combined cooling arrangement for sulphur gas of sugar factory sulphur furnace as claimed in claim 1 wherein: The serpentine cooling pipe (110) and the cooling coil (17) have a plurality of gaps for sulfur gas to pass through.

6. The combined cooling arrangement for sulphur gas of sugar factory sulphur furnace as claimed in claim 1 wherein: The outer surface of the gas collecting cover (18) is fixedly connected with the inner cavity side wall of the square frame (11), and the top end port of the gas collecting cover (18) is connected with the bottom end port of the water-cooled purification tank (14).

7. The combined cooling arrangement for sulphur gas of sugar factory sulphur furnace as claimed in claim 1 wherein: The top end port of the water-cooled purification tank (14) is connected with the bottom end port of the air outlet port (12).

8. The combined cooling arrangement for sulphur gas of sugar factory sulphur furnace as claimed in claim 1 wherein: The one-way check valve (19) prevents the solution inside the water-cooled purification tank (14) from flowing backward, and controls the sulfur gas to enter the water-cooled purification tank (14) from bottom to top.

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