Sulfur melting tank for producing food-grade sulfuric acid

Abstract

The utility model discloses a food-grade sulfuric acid production sulfur melting tank which comprises a sulfur melting tank body, a pipe hole is formed in the wall face of the lower middle portion of the sulfur melting tank body, the pipe diameter of the pipe hole is matched with a discharging pipe of an inner base, the inner base is located in the sulfur melting tank body, and a threaded groove is formed in an end opening of the discharging pipe and used for being in threaded connection with an external pipeline. According to the food-grade sulfuric acid production sulfur melting tank, the problems that when an existing tool is in a working state, after internal sulfur is gradually melted along with the temperature, generated gas generates chemical reaction with water vapor and oxygen, and the sulfur melting effect is poor are solved. As water vapor is in a rising form and can be attached to the wall surface of the upper part of the sulfur melting tank, the wall surface of the upper part of the sulfur melting tank is easily corroded and damaged, the integral sulfur melting tank structure is very inconvenient to repair and maintain and needs to be integrally replaced, and the manufacturing cost is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfuric acid production equipment, in particular to a sulfur melting tank for producing food-grade sulfuric acid. Background Art

[0002] A sulfur melting tank is a device used in chemical production processes, especially in sulfuric acid production, to melt solid sulfur into liquid sulfur. In sulfuric acid production, liquid sulfur is one of the important raw materials for preparing sulfuric acid. The sulfur melting tank heats the sulfur in the tank to a molten state through heating elements (such as steam or electric heaters). In order to ensure the normal operation of the sulfur melting tank and extend its service life, the tank body needs to be inspected and maintained regularly, including cleaning sediments, checking the heating system and insulation layer, etc.

[0003] When the sulfur melting tank is in working condition, the internal sulfur gradually melts with the temperature, and the generated gas reacts chemically with water vapor and oxygen. Since the water vapor is in a rising form and will adhere to the upper wall of the sulfur melting tank, it is very easy to corrode and damage the upper wall of the sulfur melting tank. The integrated sulfur melting tank structure is very inconvenient to repair and maintain, and needs to be replaced as a whole, which increases the manufacturing cost.

[0004] Therefore, it is necessary to provide a food-grade sulfuric acid production molten sulfur tank to solve the above-mentioned technical problems. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a food-grade sulfuric acid production sulfur melting tank to solve the problem that when the existing tools are in a working state, the internal sulfur gradually melts with the temperature, and the generated gas reacts chemically with water vapor and oxygen. Since the water vapor is in a rising form and will adhere to the upper wall of the sulfur melting tank, it is very easy to corrode and damage the upper wall of the sulfur melting tank. The integrated sulfur melting tank structure is very inconvenient to repair and maintain and needs to be replaced as a whole, which increases the manufacturing cost.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A sulfur melting tank for producing food-grade sulfuric acid, comprising: a sulfur melting tank;

[0008] A pipe hole is provided on the middle and lower wall of the sulfur melting tank, and the diameter of the pipe hole is matched with the discharge pipe of the inner base. The inner base is located inside the sulfur melting tank, and a threaded groove is provided at the port of the discharge pipe for threaded connection with an external pipeline to extract sulfuric acid from the inner base. The inner base is made of alloy steel as a whole, and the top surface of the inner base is bolted to the bottom surface of the jacket group.

[0009] In one embodiment, a positioning plate is installed on the inner bottom surface of the molten sulfur tank, and the positioning plate is in the shape of a circular ring plate as a whole, and a positioning groove is provided at the bottom of the inner base.

[0010] In one embodiment, a gap is left between the inner wall of the sulfur melting tank and the inner base, the gap is a heat-insulating channel, and the heat-insulating channel is filled with heat-insulating fillers.

[0011] In one embodiment, a top sealing plate is installed between the top of the sulfur melting tank and the jacket group, the lower part of the top sealing plate is inserted into the insulation channel, the diameter of the top is larger than the diameter of the sulfur melting tank, and the two are in a top edge overlapping state.

[0012] In one embodiment, the jacket group is composed of sleeve plates arranged in a circular array, a slot is provided on the left side of the sleeve plate, and an insert plate matching the slot is provided on the right side, the slots of adjacent sleeve plates are plug-in and sealedly connected to the insert plates of the adjacent sleeve plates, an installation groove is provided in the middle of the inner wall surface of the sleeve plate, the installation groove is a T-shaped structure, and its interior is plug-in connected to the insert block of the protective plate, the arc surface structure of the protective plate is consistent with that of the sleeve plate, and the relative surfaces of the two are in abutment.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) The utility model provides a second protective layer for the sleeves in the corrosion area by inserting and sealing the slots of the adjacent sleeves with the plug-in plates of the adjacent sleeves.

[0015] (2) The utility model protects the plate body of the sleeve plate by setting a protective plate, so that the inner wall surface of the protective plate is the initial surface of corrosion. In this way, when performing maintenance and replacement, only the corresponding protective plate needs to be replaced, which greatly reduces the cost compared to replacing the entire sulfur melting tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structure diagram of the utility model;

[0017] Figure 2 This is a detailed diagram of the internal structure of the utility model after being disassembled;

[0018] Figure 3 This is a detailed diagram of the jacket assembly of the utility model;

[0019] Figure 4 This is a detailed diagram of the jacket assembly of the utility model after being disassembled.

[0020] Among them, the names corresponding to the figure marks are: sulfur melting tank 1, pipe hole 11, positioning plate 12, insulation channel 13, jacket group 2, sleeve plate 21, slot 2, plug plate 23, installation slot 24, protective plate 25, plug block 26, inner base 3, discharge pipe 31, positioning slot 32, top sealing plate 4. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0022] like Figure 1-Figure 2 As shown, the utility model provides a sulfur melting tank for producing food-grade sulfuric acid, comprising: a sulfur melting tank 1, a jacket group 2, and an inner base 3;

[0023] like Figure 1-Figure 2 As shown, a pipe hole 11 is provided on the middle and lower wall surface of the sulfur melting tank 1, and the diameter of the pipe hole 11 is matched with the discharge pipe 31 of the inner base 3. The inner base 3 is located inside the sulfur melting tank 1, and a threaded groove is provided at the port of the discharge pipe 31 for threaded connection with an external pipeline to extract sulfuric acid from the inner base 3. The inner base 3 is made of alloy steel as a whole, and the top surface of the inner base 3 is bolted to the bottom surface of the jacket group 2. By installing the inner base 3 and the jacket group 2 on the internal lining of the sulfur melting tank 1, it is only necessary to replace the corresponding jacket group 2 during maintenance, thereby reducing costs and reducing maintenance difficulty.

[0024] Preferably, in one embodiment, Figure 1-Figure 2 As shown, a positioning plate 12 is installed on the inner bottom surface of the sulfur melting tank 1. The positioning plate 12 is annular in shape as a whole. A positioning groove 32 is provided at the bottom of the inner base 3. When the inner base 3 is installed, a sealing gasket is placed at the positioning plate 12 and inserted into the positioning plate 12 through the positioning groove 32 to complete the preliminary positioning. Then, the inner base and the sulfur melting tank 1 can be installed by bolts.

[0025] Preferably, in one embodiment, Figure 2 As shown, there is a gap between the inner wall of the molten sulfur tank 1 and the inner base 3 , and the gap is a heat-insulating channel 13 . The heat-insulating channel 13 is filled with heat-insulating fillers to block the heat dissipation of the inner base 3 .

[0026] Preferably, in one embodiment, Figure 2 As shown, a top sealing plate 4 is installed between the top of the sulfur melting tank 1 and the jacket group 2, and the lower part of the top sealing plate 4 is inserted into the insulation channel 13. The diameter of the top is larger than the diameter of the sulfur melting tank 1, and the two are in a top edge overlapping state.

[0027] Preferably, in one embodiment, Figure 3-Figure 4As shown, the jacket group 2 is composed of sleeve plates 21 arranged in a circular array, a slot 22 is provided on the left side of the sleeve plate 21, and a plug plate 23 matching the slot 22 is provided on the right side, the slots 22 of adjacent sleeve plates 21 are plug-in sealed and connected with the plug plates 23 of the adjacent sleeve plates 21, and a mounting groove 24 is provided in the middle of the inner wall surface of the sleeve plate 21, the mounting groove 24 is a T-shaped structure, and its interior is plug-in connected with the plug block 26 of the protective plate 25, the protective plate 25 is consistent with the arc surface structure of the sleeve plate 21, and the relative surfaces of the two are in abutment state, and the plate body of the sleeve plate 21 is protected by the setting of the protective plate 25, so that the inner wall surface of the protective plate 25 is the initial surface of corrosion, so that when repairing and replacing, only the corresponding protective plate 25 needs to be replaced, and the cost is greatly reduced compared with replacing the overall sulfur melting tank 1.

[0028] Working principle of this utility model:

[0029] During operation, the slots 22 of the adjacent sleeve plates 21 are plugged and sealed to be connected with the plug plates 23 of the adjacent sleeve plates 21, so that the sleeve plates 21 are placed in the second protective layer at the corrosion site. The protective plates 25 are provided to protect the plate body of the sleeve plates 21, so that the inner wall surface of the protective plates 25 is the initial surface of corrosion. In this way, when performing maintenance and replacement, only the corresponding protective plates 25 need to be replaced, and the cost is greatly reduced compared to replacing the entire sulfur melting tank 1.

[0030] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. A food-grade sulfuric acid production molten sulfur tank, characterized in that: include: Molten sulfur tank; A pipe hole is provided on the middle and lower wall of the sulfur melting tank, and the diameter of the pipe hole is matched with the discharge pipe of the inner base. The inner base is located inside the sulfur melting tank, and a threaded groove is provided at the port of the discharge pipe for threaded connection with an external pipeline to extract sulfuric acid from the inner base. The inner base is made of alloy steel as a whole, and the top surface of the inner base is bolted to the bottom surface of the jacket group.

2. A food-grade sulfuric acid production molten sulfur tank according to claim 1, characterized in that: A positioning plate is installed on the inner bottom surface of the sulfur melting tank. The positioning plate is in the shape of a circular ring plate as a whole. A positioning groove is provided at the bottom of the inner base.

3. A food-grade sulfuric acid production molten sulfur tank according to claim 1, characterized in that: A gap is left between the inner wall of the molten sulfur tank and the inner base, and the gap is a heat-insulating channel, and the heat-insulating channel is filled with heat-insulating fillers.

4. A food-grade sulfuric acid production molten sulfur tank according to claim 1, characterized in that: A top sealing plate is installed between the top of the sulfur melting tank and the jacket group, the lower part of the top sealing plate is inserted into the heat insulation channel, the diameter of the top is larger than the diameter of the sulfur melting tank, and the two are in a top edge overlapping state.

5. A food-grade sulfuric acid production molten sulfur tank according to claim 4, characterized in that: The jacket group is composed of sleeve plates arranged in a circular array, a slot is provided on the left side of the sleeve plate, and a plug plate matching the slot is provided on the right side, the slots of adjacent sleeve plates are plug-in sealed connection with the plug plates of the adjacent sleeve plates, a mounting groove is provided in the middle of the inner wall surface of the sleeve plate, the mounting groove is a T-shaped structure, and its interior is plug-in connected with the plug block of the protective plate, the protective plate and the sleeve plate have the same arc surface structure, and the relative surfaces of the two are in abutment.

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