A novel fuming sulfuric acid evaporation apparatus

Abstract

The utility model discloses a novel fuming sulfuric acid evaporation device relates to fuming sulfuric acid evaporation device technical field, including evaporator main part and filter frame, the bottom fixed connection of evaporator main part has main feed pipe body, and main feed pipe body is connected with the one side of filter frame through flange and hexagon bolt, and the front side fixed connection of main feed pipe body has the conveying pipe. The utility model discloses a feed filter mechanism can be to the fuming sulfuric acid that feeds to evaporator main part inside carries out the graded filtration treatment, fully removes the impurity in it, avoids the subsequent impurity deposition in main feed pipe body and evaporator main part inside heating cavity, reduces the possibility of jam, also avoids the influence to its heat transfer effect simultaneously, and through the knocking vibration function of the coarse filter screen board, the middle filter screen board and the fine filter screen board cooperation knocking hammer can drive the impurity on the filtration interception and fall and deposit quickly, avoids causing the jam of coarse filter screen board, middle filter screen board and fine filter screen board, ensures its smoothness.

Description

Technical Field

[0001] This utility model belongs to the technical field of fuming sulfuric acid evaporation equipment, and in particular relates to a novel fuming sulfuric acid evaporation equipment. Background Technology

[0002] Fuming sulfuric acid is a solution of sulfur trioxide (SO3) in sulfuric acid (H2SO4). It is a viscous, oily liquid with extremely strong corrosiveness and hygroscopicity. It volatilizes SO3 gas in the air, which combines with water vapor to form sulfuric acid mist, resembling smoke, hence the name fuming sulfuric acid. In the process of preparing sulfur trioxide gas, fuming sulfuric acid is often injected into an evaporation device and evaporated using a heat source (such as high-temperature steam) to obtain sulfur trioxide gas. Specifically, the high-temperature steam indirectly transfers heat to the fuming sulfuric acid, reducing the solubility of SO3 in the liquid phase and providing sufficient energy (heat of vaporization) to allow it to escape from the liquid fuming sulfuric acid and transform into a gaseous state. The reaction formula (physical process) is H2SO4·SO3(l) → [Δ]H2SO4(l) + SO3(g), which is then collected through the top gas outlet.

[0003] For example, CN219481575U discloses a fuming sulfuric acid evaporator, which includes a shell with a partition to form an evaporation chamber and a heating chamber. A main feed pipe and a heating pipe are fixedly connected to the shell. The main feed pipe can be divided into a feed end, a heating part, and a discharge end. The discharge end is fixedly connected to the partition to communicate with the evaporation chamber. The heating pipe can be divided into an inlet end, a heating part, and an outlet end. Both the heating part and the heating part are spirally arranged and intertwined coaxially. The fuming sulfuric acid evaporator provided by this utility model utilizes the evaporation chamber and the heating chamber inside the shell. The heating part of the heating pipe heats the contents of the heating chamber through the heating chamber, and the heating part of the main feed pipe heats the fuming sulfuric acid in the main feed pipe through the heating chamber. When steam leaks from the heating pipe into the heating chamber, it can prevent the steam from directly contacting the fuming sulfuric acid, thereby preventing steam leakage into the fuming sulfuric acid and causing damage to the evaporator shell.

[0004] The above-mentioned patent has the following defects in use:

[0005] In the evaporation process of fuming sulfuric acid, the fuming sulfuric acid enters the evaporation device directly through the main feed pipe. Catalyst residues and pipeline corrosion products carried in the raw materials are easily deposited in the main feed pipe and heating chamber. This not only easily causes blockage during the feeding process, but also affects the heat transfer effect during the heating process. At the same time, the high-temperature condensate discharged from the heating pipe is directly discharged, which easily leads to the waste of thermal energy resources. Therefore, this utility model proposes a new type of fuming sulfuric acid evaporation device. Utility Model Content

[0006] This invention provides a novel fuming sulfuric acid evaporation device. Through a feeding filtration mechanism, the fuming sulfuric acid fed into the evaporator body is subjected to graded filtration, effectively removing impurities and preventing subsequent impurity deposition in the main feed pipe and the heating chamber inside the evaporator body, thus reducing the possibility of blockage and ensuring efficient heat transfer. Furthermore, the inclined coarse, medium, and fine filter plates, combined with the vibration of a hammer, cause impurities intercepted by the filters to quickly fall off and deposit, preventing blockage and ensuring unobstructed flow. A waste heat conduction mechanism guides the high-temperature condensate discharged from the heating tube outlet to the bottom of the filter frame, where it is transferred to the interior of the filter frame via heat conduction to preheat the fuming sulfuric acid. This utilizes waste heat, reducing energy waste, and shortens the heating and evaporation time during subsequent heating and evaporation processes, improving evaporation efficiency. In summary, this invention solves the problems in the prior art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model discloses a novel fuming sulfuric acid evaporation device, comprising:

[0009] The evaporator body and filter frame are provided. The bottom of the evaporator body is fixedly connected to the main feed pipe, which is connected to one side of the filter frame via a flange and hexagonal bolts. A conveying pipe is fixedly connected to the front side of the main feed pipe. A heating tube is embedded in the evaporator body, and an auxiliary feed pipe is fixedly connected to the outer wall of the evaporator body. The end of the heating tube near the filter frame is the air inlet, and the end of the heating tube away from the filter frame is the air outlet. An exhaust pipe is fixedly connected to the top of the evaporator body, and a support rod is fixedly connected to the outer wall of the filter frame.

[0010] A feed filtration mechanism is disposed on a filter frame and is used to filter impurities in fuming sulfuric acid.

[0011] Waste heat conduction mechanism, which is set on the filter frame and is used to collect heat from the gas outlet of the heating tube to preheat fuming sulfuric acid;

[0012] The feeding filtration mechanism includes a sealing cover plate connected to the top of the filter frame via hexagonal bolts. A coarse filter plate, a medium filter plate, and a fine filter plate are fixedly connected to the inner wall of the filter frame. The bottom end of the sealing cover plate contacts the top ends of the coarse, medium, and fine filter plates. A pair of U-shaped plates are fixedly connected to the top of the sealing cover plate, and an I-shaped plate is slidably connected between the inner walls of the pair of U-shaped plates. Multiple hammers are fixedly connected to the bottom of the I-shaped plate, and all hammers contact the top of the sealing cover plate. An electric telescopic rod is fixedly connected between the bottom of the I-shaped plate and the inner bottom of the pair of U-shaped plates.

[0013] Furthermore, the outer wall of the evaporator body is fitted with a double insulation sleeve, which consists of an inner layer of aluminum silicate fiber cotton and an outer layer of stainless steel sheet.

[0014] Furthermore, the coarse filter plate, the medium filter plate, and the fine filter plate are all inclined, and the mesh size of the coarse filter plate, the medium filter plate, and the fine filter plate decreases sequentially.

[0015] Furthermore, a pair of grooves are carved into the inner walls of each pair of U-shaped plates, and the front and rear sides of the I-shaped plate are respectively located in the two pairs of grooves and are slidably connected to them.

[0016] Furthermore, the waste heat conduction mechanism includes a water pump fixedly connected to one side of the filter frame. The air outlet of the heating tube is connected to a water pump via a flange and hexagonal bolts, and the bottom end of the water pump is connected to the water pump's suction end via a flange and hexagonal bolts. A heat insulation cover is fixedly connected to the bottom of the filter frame, and a serpentine heat-conducting pipe is fixedly connected inside the heat insulation cover. The outer wall of the serpentine heat-conducting pipe contacts the bottom of the filter frame. The end of the serpentine heat-conducting pipe near the water pump penetrates the side wall of the heat insulation cover and is fixedly connected to a water guide pipe. The top end of the water guide pipe is connected to the water pump's drain end via a flange and hexagonal bolts. A through hole is drilled at the bottom of the heat insulation cover, and the bottom end of the serpentine heat-conducting pipe passes through the through hole and extends to its bottom.

[0017] Furthermore, a PID regulating valve is fixedly connected to the outer wall of the water guide pipe.

[0018] Furthermore, a rectangular opening is cut out on the front side of the filter frame, and a transparent observation window is embedded in the inner wall of the rectangular opening.

[0019] The present invention has the following advantages over the prior art:

[0020] 1. This technical solution, through its feed filtration mechanism, can perform graded filtration of fuming sulfuric acid fed into the evaporator body via coarse, medium, and fine filter plates. This effectively removes impurities, preventing subsequent impurities from accumulating in the main feed pipe and the heating chamber inside the evaporator body, reducing the possibility of blockage and avoiding impact on heat transfer. Furthermore, the inclined coarse, medium, and fine filter plates, combined with the impact of the hammer, can quickly dislodge and deposit impurities from the filters, preventing blockage and ensuring unobstructed flow.

[0021] 2. This technical solution, through the waste heat conduction mechanism, can guide the high-temperature condensate discharged from the outlet of the heating tube to the bottom of the filter frame via a water pump and a serpentine heat conduction pipe. The waste heat is then conducted to the inside of the filter frame to preheat the fuming sulfuric acid. This not only utilizes the waste heat and reduces heat energy waste, but also shortens the heating and evaporation time and improves the evaporation efficiency in the subsequent heating and evaporation process.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0024] Figure 1 This is a three-dimensional structural diagram of a novel fuming sulfuric acid evaporation device according to the present invention;

[0025] Figure 2 This is a partial cross-sectional structural diagram of a novel fuming sulfuric acid evaporation device according to the present invention;

[0026] Figure 3 This is a partial three-dimensional structural diagram of the feeding and filtering mechanism in this utility model;

[0027] Figure 4 This is a partial disassembled structural diagram of the filter frame and waste heat conduction mechanism in this utility model from a bottom view angle;

[0028] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Evaporator body; 2. Main feed pipe; 3. Heating pipe; 4. Double insulation jacket; 401. Inner layer of aluminum silicate fiber cotton; 402. Outer layer of stainless steel sheet; 5. Auxiliary feed pipe; 6. Exhaust pipe; 7. Filter frame; 8. Conveying pipe; 9. Support rod; 10. Feeding and filtering mechanism; 1001. Sealing cover plate; 1002. Coarse filter plate; 1003. Medium filter plate; 1004. Fine filter plate; 1005. U-shaped plate; 1006. I-shaped plate; 1007. Striking hammer; 1008. Electric telescopic rod; 1009. Slide groove; 11. Waste heat conduction mechanism; 1101. Water pump; 1102. Water suction pipe; 1103. Water guide pipe; 1104. Insulation cover; 1105. Serpentine heat conduction pipe; 1106. PID regulating valve; 12. Transparent observation window. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "relative", "one end", "inner", "lateral", "end", "both ends", "both sides", "front", "one end face", "the other end face", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Specific Implementation Example 1:

[0034] Please see Figures 1-5 As shown, a novel fuming sulfuric acid evaporation device of this utility model includes:

[0035] The evaporator body 1 and the filter frame 7 are provided. The bottom of the evaporator body 1 is fixedly connected to the main feed pipe 2, and the main feed pipe 2 is connected to one side of the filter frame 7 through a flange and hex bolts. The front side of the main feed pipe 2 is fixedly connected to the conveying pipe 8. The evaporator body 1 is embedded and connected to the heating pipe 3, and the outer wall of the evaporator body 1 is fixedly connected to the auxiliary feed pipe 5. The end of the heating pipe 3 near the filter frame 7 is the air inlet end, and the end of the heating pipe 3 away from the filter frame 7 is the air outlet end. The top of the evaporator body 1 is fixedly connected to the exhaust pipe 6, and the outer wall of the filter frame 7 is fixedly connected to the support rod 9.

[0036] Feed filtration mechanism 10 is disposed on filter frame 7 and is used to filter impurities in fuming sulfuric acid.

[0037] Waste heat conduction mechanism 11 is installed on filter frame 7 and is used to collect heat from the outlet of heating tube 3 to preheat fuming sulfuric acid.

[0038] The feeding filtration mechanism 10 includes a sealing cover plate 1001 connected to the top of the filter frame 7 by hexagonal bolts. The inner wall of the filter frame 7 is fixedly connected to a coarse filter plate 1002, a medium filter plate 1003, and a fine filter plate 1004. The bottom end of the sealing cover plate 1001 is in contact with the top ends of the coarse filter plate 1002, the medium filter plate 1003, and the fine filter plate 1004. A pair of U-shaped plates 1005 are fixedly connected to the top end of the sealing cover plate 1001. An I-shaped plate 1006 is slidably connected between the inner walls of the pair of U-shaped plates 1005. Multiple hammers 1007 are fixedly connected to the bottom end of the I-shaped plate 1006. All hammers 1007 are in contact with the top end of the sealing cover plate 1001. An electric telescopic rod 1008 is fixedly connected between the bottom end of the I-shaped plate 1006 and the inner bottom end of the pair of U-shaped plates 1005.

[0039] In the specific implementation process, fuming sulfuric acid first enters the filter frame 7 through the conveying pipe 8, and then passes sequentially through the coarse filter plate 1002, the medium filter plate 1003, and the fine filter plate 1004. This process filters catalyst residues and pipeline corrosion products of different sizes in stages, preventing impurities from accumulating in the main feed pipe 2 and the heating chamber inside the evaporator body 1, reducing the possibility of blockage and also avoiding affecting the heat transfer effect. Next, the filtered fuming sulfuric acid enters the main feed pipe 2, and then the evaporator body 1. High-temperature steam is then introduced into the heating pipe 3 to vaporize and separate SO3 from the sulfuric acid. The SO3 gas is then discharged through the exhaust pipe 6. During the filtration process, the driven electric telescopic rod 1008 drives the I-shaped plate 1006 and multiple hammers 1007 to reciprocate up and down, causing the hammers 1007 to repeatedly strike the sealing cover plate 1001, generating vibration and shaking off the coarse filter plate 1002, the medium filter plate 1003, and the fine filter plate 1004. Impurities attached to the fine filter plate 1004 are quickly removed and deposited inside the filter frame 7, preventing blockage of the coarse filter plate 1002, medium filter plate 1003, and fine filter plate 1004, ensuring their unobstructed flow. Subsequently, the hexagonal bolts can be tightened to separate the sealing cover plate 1001 from the filter frame 7, allowing for the cleaning of impurities inside the filter frame 7. This solution, based on existing technology, mainly improves the external structure of the prior art (a fuming sulfuric acid evaporator) cited in the background art. Specifically, it includes adding a filter frame 7 and a feed filter mechanism 10 before the main feed pipe 2 to filter impurities in the fuming sulfuric acid; and setting a waste heat conduction mechanism 11 between the outside of the outlet end of the heating pipe 3 and the bottom of the filter frame 7 to preheat the fuming sulfuric acid using the high-temperature condensate at the outlet end of the heating pipe 3. The above improvements do not require changes to the internal structure of the existing technology, as its internal structure is consistent with the prior art (a fuming sulfuric acid evaporator), and therefore will not be described in detail here.

[0040] The outer wall of the evaporator body 1 is fitted with a double insulation sleeve 4, which consists of an inner layer of aluminum silicate fiber cotton 401 and an outer layer of stainless steel sheet 402.

[0041] The inner layer 401 of aluminum silicate fiber cotton has a low thermal conductivity, which can effectively reduce the heat loss from the evaporator body 1 to the outside. The outer layer 402 of stainless steel sheet prevents the inner layer 401 of aluminum silicate fiber cotton from mechanical damage, contamination or moisture, and maintains its long-term heat insulation performance.

[0042] Among them, the coarse filter plate 1002, the medium filter plate 1003 and the fine filter plate 1004 are all inclined, and the mesh size of the coarse filter plate 1002, the medium filter plate 1003 and the fine filter plate 1004 decreases sequentially.

[0043] The coarse filter plate 1002, medium filter plate 1003, and fine filter plate 1004 can fully filter catalyst residues and pipeline corrosion products of different sizes. At the same time, the coarse filter plate 1002, medium filter plate 1003, and fine filter plate 1004 are all inclined to facilitate the sliding and deposition of impurities along the inclined surface, reducing adhesion. In addition, during use, many components in the feed filtration mechanism 10 need to use corrosion-resistant materials to resist the corrosiveness of fuming sulfuric acid. For example, the filter frame 7 is made of Hastelloy C-276, the conveying pipe 8 is made of PTFE-lined 316L stainless steel, the sealing cover plate 1001 is made of Hastelloy B-3 matrix with PTFE sealing layer, the coarse filter plate 1002 is made of 316L stainless steel skeleton with PTFE-coated mesh, the medium filter plate 1003 is made of Hastelloy C-22 woven mesh, and the fine filter plate 1004 is made of pure PTFE sintered porous plate.

[0044] Among them, the inner walls of a pair of U-shaped plates 1005 are each carved with a pair of sliding grooves 1009, and the front and rear sides of the I-shaped plate 1006 are respectively located in the two pairs of sliding grooves 1009 and are slidably connected with them.

[0045] By setting the slide grooves 1009, when the I-shaped plate 1006 is driven up and down by the electric telescopic rod 1008, it can move along the two pairs of slide grooves 1009 to maintain linear movement and prevent deviation.

[0046] The filter frame 7 has a rectangular opening on its front side, and a transparent observation window 12 is embedded in the inner wall of the rectangular opening.

[0047] The transparent observation window 12 allows staff to easily observe the filtration status of fuming sulfuric acid inside the filter frame 7. During use, the transparent observation window 12 needs to be made of materials resistant to fuming sulfuric acid corrosion, such as a composite material of calcium fluoride crystal (outer layer), polyimide adhesive layer (middle layer), and quartz glass (inner layer). Specific Implementation Example 2:

[0049] Please see Figure 1 , Figure 4 and Figure 5As shown, in a preferred embodiment, the waste heat conduction mechanism 11 includes a water pump 1101 fixedly connected to one side of the filter frame 7. The air outlet of the heating tube 3 is connected to a water pump 1102 via a flange and hexagonal bolts, and the bottom end of the water pump 1102 is connected to the water pump 1101 via a flange and hexagonal bolts. A heat insulation cover 1104 is fixedly connected to the bottom end of the filter frame 7, and a serpentine heat conduction pipe 1 is fixedly connected inside the heat insulation cover 1104. 105. The outer wall of the serpentine heat pipe 1105 is in contact with the bottom of the filter frame 7. The end of the serpentine heat pipe 1105 near the water pump 1101 passes through the side wall of the insulation cover 1104 and is fixedly connected to the water pipe 1103. The top of the water pipe 1103 is connected to the drain end of the water pump 1101 through a flange and hexagonal bolts. The bottom of the insulation cover 1104 has a through hole, and the bottom of the serpentine heat pipe 1105 passes through the through hole and extends to its bottom.

[0050] In the specific implementation process, the driving water pump 1101 can drive the water pumping pipe 1102 to draw the high-temperature condensate discharged from the gas outlet of the heating tube 3 into the water guide pipe 1103, and then into the serpentine heat conduction pipe 1105. The serpentine heat conduction pipe 1105 is in contact with the bottom end of the filter frame 7, which can conduct the heat on the high-temperature condensate into the filter frame 7 to preheat the fuming sulfuric acid. This not only realizes the utilization of waste heat and reduces heat energy waste, but also shortens the heating and evaporation time and improves the evaporation efficiency in the subsequent heating and evaporation process. The serpentine heat conduction pipe 1105 can be made of Hastelloy C-276 seamless tube material, which has good thermal conductivity. The heat insulation cover 1104 can be made of tantalum metal foil with aluminum silicate fiber layer, which has good heat insulation effect.

[0051] A PID regulating valve 1106 is fixedly connected to the outer wall of the water guide pipe 1103.

[0052] The flow rate of high-temperature condensate can be adjusted according to the temperature of the fuming sulfuric acid in the feed by setting the PID control valve 1106.

[0053] The circuits, electronic components, and chip modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0054] All standard parts used in the application documents can be purchased from the market. All components in this application document can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The electrical components mentioned in this document are all electrically connected to the external main controller and power supply, and the main controller is a conventional known device that can play a control role.

[0055] The working principle of this utility model is as follows:

[0056] In use, this utility model first introduces fuming sulfuric acid into the filter frame 7 via the delivery pipe 8, and then sequentially passes through the coarse filter plate 1002, the medium filter plate 1003, and the fine filter plate 1004. This process involves graded filtration of catalyst residues and pipeline corrosion products of different sizes. During filtration, the driven electric telescopic rod 1008 moves the I-shaped plate 1006 and multiple hammers 1007 in a reciprocating motion, causing the hammers to repeatedly strike the sealing cover plate 1001, generating vibrations that dislodge impurities adhering to the coarse filter plate 1002, the medium filter plate 1003, and the fine filter plate 1004, allowing them to fall off quickly and settle. Inside the filter frame 7, the filtered fuming sulfuric acid enters the main feed pipe 2, and then enters the evaporator body 1. High-temperature steam is then introduced into the heating tube 3 to vaporize and separate SO3 in the sulfuric acid. SO3 gas is then discharged through the exhaust pipe 6. The driving water pump 1101 drives the water pumping pipe 1102 to draw the high-temperature condensate discharged from the exhaust end of the heating tube 3 and flow it into the water guide pipe 1103, and then into the serpentine heat conduction pipe 1105. The serpentine heat conduction pipe 1105 is in contact with the bottom end of the filter frame 7, which can conduct the heat on the high-temperature condensate to the inside of the filter frame 7 to preheat the fuming sulfuric acid before it is discharged downward.

[0057] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A novel fuming sulfuric acid evaporation device, characterized in that, include: The evaporator body (1) and filter frame (7) are provided. The bottom of the evaporator body (1) is fixedly connected to the main feed pipe (2), and the main feed pipe (2) is connected to one side of the filter frame (7) through a flange and hexagonal bolts. The front side of the main feed pipe (2) is fixedly connected to the conveying pipe (8). The evaporator body (1) is embedded with a heating pipe (3), and the outer wall of the evaporator body (1) is fixedly connected to an auxiliary feed pipe (5). The end of the heating pipe (3) near the filter frame (7) is the air inlet end, and the end of the heating pipe (3) away from the filter frame (7) is the air outlet end. The top of the evaporator body (1) is fixedly connected to an exhaust pipe (6), and the outer wall of the filter frame (7) is fixedly connected to a support rod (9). Feed filtration mechanism (10), which is disposed on filter frame (7) and is used to filter impurities in fuming sulfuric acid; Waste heat conduction mechanism (11), which is set on filter frame (7) and is used to collect heat from the outlet of heating tube (3) to preheat fuming sulfuric acid; The feeding filtration mechanism (10) includes a sealing cover plate (1001) connected to the top of the filter frame (7) by hexagonal bolts. The inner wall of the filter frame (7) is fixedly connected to a coarse filter plate (1002), a medium filter plate (1003), and a fine filter plate (1004). The bottom end of the sealing cover plate (1001) contacts the top ends of the coarse filter plate (1002), the medium filter plate (1003), and the fine filter plate (1004), respectively. A pair of U-shaped plates (1005) are fixedly connected to the top of the sealing cover (1001), and an I-shaped plate (1006) is slidably connected between the inner walls of the pair of U-shaped plates (1005). Multiple hammers (1007) are fixedly connected to the bottom of the I-shaped plate (1006), and the multiple hammers (1007) are in contact with the top of the sealing cover (1001). An electric telescopic rod (1008) is fixedly connected between the bottom of the I-shaped plate (1006) and the inner bottom of the pair of U-shaped plates (1005).

2. The novel fuming sulfuric acid evaporation apparatus according to claim 1, characterized in that, The outer wall of the evaporator body (1) is fitted with a double insulation sleeve (4), and the double insulation sleeve (4) is composed of an inner layer of aluminum silicate fiber cotton (401) and an outer layer of stainless steel sheet (402).

3. The novel fuming sulfuric acid evaporation apparatus according to claim 1, characterized in that, The coarse filter plate (1002), the medium filter plate (1003), and the fine filter plate (1004) are all inclined, and the mesh size of the coarse filter plate (1002), the medium filter plate (1003), and the fine filter plate (1004) decreases sequentially.

4. The novel fuming sulfuric acid evaporation apparatus according to claim 1, characterized in that, The inner walls of each pair of U-shaped plates (1005) are each carved with a pair of sliding grooves (1009). The front and rear sides of the I-shaped plate (1006) are respectively located in the two pairs of sliding grooves (1009) and are slidably connected to them.

5. The novel fuming sulfuric acid evaporation apparatus according to claim 1, characterized in that, The waste heat conduction mechanism (11) includes a water pump (1101) fixedly connected to one side of the filter frame (7). The outlet end of the heating tube (3) is connected to a water pump (1102) via a flange and hexagonal bolts. The bottom end of the water pump (1102) is connected to the water pump (1101) via a flange and hexagonal bolts. The bottom end of the filter frame (7) is fixedly connected to a heat insulation cover (1104), and a serpentine heat conduction pipe (1105) is fixedly connected inside the heat insulation cover (1104). The outer wall of the serpentine heat pipe (1105) is in contact with the bottom end of the filter frame (7). The end of the serpentine heat pipe (1105) near the water pump (1101) passes through the side wall of the heat insulation cover (1104) and is fixedly connected to the water pipe (1103). The top end of the water pipe (1103) is connected to the drain end of the water pump (1101) through a flange and hexagonal bolts. The bottom end of the heat insulation cover (1104) has a through hole, and the bottom end of the serpentine heat pipe (1105) passes through the through hole and extends to its bottom.

6. A novel fuming sulfuric acid evaporation apparatus according to claim 5, characterized in that, A PID regulating valve (1106) is fixedly connected to the outer wall of the water guide pipe (1103).

7. The novel fuming sulfuric acid evaporation apparatus according to claim 1, characterized in that, The filter frame (7) has a rectangular opening on its front side, and a transparent observation window (12) is embedded in the inner wall of the rectangular opening.

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