A sulfuric acid storage tank anti-crystallization heating and heat preservation structure

Abstract

The utility model relates to the technical field of storage tank discloses a kind of sulfuric acid storage tank anti-crystallization heating insulation structure, including tank body and water circulation heating mechanism, tank body bottom is fixedly connected with multiple support legs, tank body outside is provided with heating insulation mechanism, heating insulation mechanism outside is fixedly connected with access ladder, tank body top is fixedly connected with grating, heating insulation mechanism further includes multiple heating jackets, heating jacket is connected with water circulation heating mechanism by pipeline, heating jacket is fixedly connected in tank body outside, heating jacket is fixedly connected with heat insulation partition in, heat insulation partition and heating jacket inside one side are fixedly connected with partition.In tank body outside setting multiple heating jackets, and through the design of shunt bin and double water inlet channel, make heating medium evenly distribute, eliminate the temperature difference of former section and rear section, avoid local low temperature crystallization and overheating corrosion, cooperate temperature sensor real-time monitoring, water circulation heating mechanism precision temperature control, guarantee the uniform and stable temperature of sulfuric acid in storage tank.

Description

Technical Field

[0001] This utility model relates to the field of storage tank technology, and in particular to a heating and heat preservation structure for preventing crystallization in sulfuric acid storage tanks. Background Technology

[0002] When storing sulfuric acid, sulfuric acid storage tanks are prone to sulfuric acid crystallization due to temperature changes or abnormal sulfuric acid concentration. That is, when the ambient temperature is lower than the crystallization critical value of sulfuric acid of different concentrations, sulfuric acid molecules will gradually lose their fluidity, form solid crystals and precipitate. If the temperature continues to drop, the crystallization will become more and more obvious, and may even cause the entire tank of sulfuric acid to solidify.

[0003] Sulfuric acid storage tanks typically have coils or insulation jackets installed on the outside of the tank body, and use circulating heating media to achieve heating and insulation functions. However, when the sulfuric acid storage tank coils are heated, the temperature tends to decrease along the direction from the inlet to the outlet, resulting in uneven heating. After hot water or steam enters from the inlet, it is continuously transferred to the sulfuric acid with heat, and the temperature gradually decreases, resulting in a significant temperature difference between the front and rear sections of the coil. The sulfuric acid in the front area is fully heated and has a higher temperature, while the heating effect is weakened at the rear due to the decrease in the heat source temperature, which easily forms a low-temperature zone. This gradient temperature difference will cause the sulfuric acid temperature to stratify inside the storage tank, and crystallization is likely to occur in the corresponding area at the rear. The coexistence of local overheating and low temperature will aggravate uneven corrosion of the inner wall of the storage tank, shorten the service life of the equipment, and also affect the stability of the sulfuric acid discharge temperature. Utility Model Content

[0004] The purpose of this utility model is to provide a heating and insulation structure for sulfuric acid storage tanks to prevent crystallization. Multiple heating jackets are set on the outside of the tank body, and the heating medium is evenly distributed with the help of the diversion chamber and the double water inlet channel. This can eliminate temperature difference, avoid crystallization and corrosion, and effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A sulfuric acid storage tank anti-crystallization heating and insulation structure includes a tank body and a water circulation heating mechanism. Multiple support legs are fixedly connected to the bottom of the tank body. A heating and insulation mechanism is installed on the outside of the tank body, and an inspection ladder is fixedly connected to the outside of the heating and insulation mechanism. A grating plate is fixedly connected to the top of the tank body. The heating and insulation mechanism also includes multiple heating sleeves, which are connected to the water circulation heating mechanism via pipes. The heating sleeves are fixedly connected to the outside of the tank body, and an insulation partition is fixedly connected inside the heating sleeve. A partition is fixedly connected to one side of the insulation partition inside the heating sleeve.

[0007] As a further preferred embodiment of this utility model, the insulation partition is filled with insulation cotton. After the insulation partition is installed inside the heating jacket, the space inside the heating jacket can be divided into a diversion chamber, a first diversion chamber and a second diversion chamber in conjunction with the partition.

[0008] As a further preferred embodiment of this utility model, the thermal insulation partition located above the partition has multiple first water inlet channels, and the thermal insulation partition located below the partition has multiple second water inlet channels, and the multiple first water inlet channels and second water inlet channels are arranged symmetrically and offset from each other.

[0009] As a further preferred embodiment of this utility model, the heating jacket located on one side of the heat insulation partition is a diversion chamber, and the heating jacket located on the other side of the heat insulation partition is a first flow guide chamber and a second flow guide chamber. The first flow guide chamber is located above the partition, and the second flow guide chamber is located below the partition. After the heat insulation partition and the partition divide the space inside the heating jacket into the diversion chamber and the first and second flow guide chambers, heating medium can be injected into the first and second flow guide chambers in both directions. With the cooperation of multiple heating jackets, a more uniform heating method can be achieved for the sulfuric acid in the tank.

[0010] As a further preferred embodiment of this utility model, a water inlet pipe is fixedly connected to the outside of the heating jacket. The water inlet pipe is connected to the diversion chamber cavity, and one end of the water inlet pipe is fixedly connected to the output end of the water circulation heating mechanism through a water inlet connecting pipe. A first drain pipe and a second drain pipe are fixedly connected to both sides of the diversion chamber. The first drain pipe is connected to the first guide chamber cavity, and the second drain pipe is connected to the second guide chamber cavity. The first drain pipe and the second drain pipe are fixedly connected to the input end of the water circulation heating mechanism through water inlet and drain connecting pipes. When the water circulation heating mechanism diverts the heating medium into multiple water inlet pipes through the water inlet connecting pipe, the heating medium enters the insulation partition and is diverted to the first guide chamber and the second guide chamber through multiple first water inlet channels and second water inlet channels, thereby realizing bidirectional introduction of the heating medium. The medium can then re-enter the water circulation heating mechanism for circulating heating through the first drain pipe, the second drain pipe, and the drain connecting pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] In this invention, multiple heating jackets are installed on the outside of the tank, and the heating medium is evenly distributed through the design of the diversion chamber and the double water inlet channel, eliminating the temperature difference between the front and rear sections, avoiding local low-temperature crystallization and overheating corrosion. With the real-time monitoring of the temperature sensor, the water circulation heating mechanism accurately controls the temperature, ensuring that the sulfuric acid temperature in the storage tank is uniform and stable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the tank structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the heating jacket structure of this utility model;

[0016] Figure 4 This is a first sectional view of the heating jacket of this utility model;

[0017] Figure 5 This is a second sectional view of the heating jacket of this utility model.

[0018] In the diagram: 1. Tank body; 2. Support leg; 3. Heating and insulation mechanism; 4. Maintenance ladder; 5. Grating plate; 6. Heating jacket; 7. Insulation partition; 8. Drainage connection pipe; 9. Water inlet connection pipe; 10. Insulation cotton; 11. Partition; 12. First water inlet channel; 13. Second water inlet channel; 14. Diversion chamber; 15. First diversion chamber; 16. Second diversion chamber; 17. Water inlet pipe; 18. First drain pipe; 19. Second drain pipe; 20. Temperature sensor; 21. Water circulation heating mechanism. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-5 As shown, the present invention provides a sulfuric acid storage tank anti-crystallization heating and insulation structure, including a tank body 1 and a water circulation heating mechanism 21. Multiple support legs 2 are fixedly connected to the bottom of the tank body 1. A heating and insulation mechanism 3 is provided on the outside of the tank body 1. An inspection ladder 4 is fixedly connected to the outside of the heating and insulation mechanism 3. A grid plate 5 is fixedly connected to the top of the tank body 1. The heating and insulation mechanism 3 also includes multiple heating sleeves 6. The heating sleeves 6 are connected to the water circulation heating mechanism 21 through pipes. The heating sleeves 6 are fixedly connected to the outside of the tank body 1. An insulation partition 7 is fixedly connected inside the heating sleeve 6. A partition 11 is fixedly connected to one side of the insulation partition 7 and the heating sleeve 6.

[0021] The insulation partition 7 is filled with insulation cotton 10. After the insulation partition 7 is installed inside the heating jacket 6, it can work with the partition 11 to divide the space inside the heating jacket 6 into a diversion chamber 14, a first diversion chamber 15, and a second diversion chamber 16. The insulation partition 7 located above the partition 11 has multiple first water inlet channels 12, and the insulation partition 7 located below the partition 11 has multiple second water inlet channels 13. The multiple first water inlet channels 12 and second water inlet channels 13 are staggered and symmetrically arranged. The heating jacket 6 located on one side of the insulation partition 7... The inner part is a diversion chamber 14. On the other side of the insulation partition 7, the heating jacket 6 contains a first diversion chamber 15 and a second diversion chamber 16. The first diversion chamber 15 is located above the partition 11, and the second diversion chamber 16 is located below the partition 11. By dividing the space within the heating jacket 6 into the diversion chamber 14 and the first and second diversion chambers 15 and 16 through the insulation partition 7 and the partition 11, heating medium can be injected bidirectionally into the first and second diversion chambers 15 and 16 respectively. Combined with multiple heating jackets 6, this allows for the heating of sulfuric acid within the tank 1. To provide a more uniform heating method, a water inlet pipe 17 is fixedly connected to the outside of the heating jacket 6. The water inlet pipe 17 is connected to the cavity of the diversion chamber 14, and one end of the water inlet pipe 17 is fixedly connected to the output end of the water circulation heating mechanism 21 through the water inlet connecting pipe 9. A first drain pipe 18 and a second drain pipe 19 are fixedly connected to both sides of the diversion chamber 14, respectively. The first drain pipe 18 is connected to the cavity of the first guide chamber 15, and the second drain pipe 19 is connected to the cavity of the second guide chamber 16. The first drain pipe 18 and the second drain pipe 19 are respectively connected to the water inlet and drain outlet. The connecting pipe 8 is fixedly connected to the input end of the water circulation heating mechanism 21. When the water circulation heating mechanism 21 diverts the heating medium through the inlet connecting pipe 9 to multiple inlet pipes 17, the heating medium enters the insulation partition 7 and is diverted through multiple first inlet channels 12 and second inlet channels 13 to the first guide chamber 15 and the second guide chamber 16, thereby realizing bidirectional introduction of the heating medium. The medium can then re-enter the water circulation heating mechanism 21 for circulation heating through the first drain pipe 18, the second drain pipe 19, and the drain connecting pipe 8.

[0022] It should be noted that this utility model is a heating and insulation structure for preventing crystallization in a sulfuric acid storage tank. In use, the water circulation heating mechanism 21 delivers the heating medium to the inlet pipe 17 through the inlet connection pipe 9. The inlet pipe 17 guides the medium into the distribution chamber 14. The medium in the distribution chamber 14 flows through the first inlet channel 12 and the second inlet channel 13. The insulation partition 7 divides the space inside the heating jacket 6 into the distribution chamber 14, the first guide chamber 15, and the second guide chamber 16. Furthermore, the heating medium entering the first guide chamber 15 and the second guide chamber 16 will not be heated, ensuring that the medium entering the first guide chamber 15 and the second guide chamber 16 is heated. The medium temperature in the flow chamber 16 is measured, and then the heating medium flows into the first flow chamber 15 and the second flow chamber 16 respectively. These heating media flow in the first flow chamber 15 and the second flow chamber 16, transferring heat to the tank body 1 to heat the sulfuric acid in the tank. After that, the medium returns to the water circulation heating mechanism 21 through the first drain pipe 18 and the second drain pipe 19 and the drain connection pipe 8 to complete the circulation. Meanwhile, the temperature sensor 20 fixedly connected to one side of the heat insulation partition 7 monitors the temperature in real time and is electrically connected to the external main controller. The water circulation heating mechanism 21 adjusts according to the monitoring results to stabilize the temperature of the sulfuric acid in the tank and prevent crystallization.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heating and insulation structure for preventing crystallization in a sulfuric acid storage tank, characterized in that: The device includes a tank (1) and a water circulation heating mechanism (21). The bottom of the tank (1) is fixedly connected to multiple support legs (2). A heating and heat preservation mechanism (3) is provided on the outside of the tank (1). An inspection ladder (4) is fixedly connected on the outside of the heating and heat preservation mechanism (3). A grid plate (5) is fixedly connected on the top of the tank (1). The heating and heat preservation mechanism (3) also includes multiple heating sleeves (6). The heating sleeves (6) are connected to the water circulation heating mechanism (21) through pipes. The heating sleeves (6) are fixedly connected on the outside of the tank (1). A heat preservation partition (7) is fixedly connected inside the heating sleeves (6). A partition (11) is fixedly connected to one side of the heat preservation partition (7) and the heating sleeve (6).

2. The anti-crystallization heating and insulation structure for a sulfuric acid storage tank according to claim 1, characterized in that: The insulation partition (7) is filled with insulation cotton (10).

3. The anti-crystallization heating and insulation structure for a sulfuric acid storage tank according to claim 1, characterized in that: The insulation partition (7) located above the partition (11) has multiple first water inlet channels (12), and the insulation partition (7) located below the partition (11) has multiple second water inlet channels (13). The multiple first water inlet channels (12) and second water inlet channels (13) are arranged symmetrically and offset from each other.

4. The anti-crystallization heating and insulation structure for a sulfuric acid storage tank according to claim 3, characterized in that: The heating sleeve (6) located on one side of the heat insulation partition (7) contains a flow distribution chamber (14), and the heating sleeve (6) located on the other side of the heat insulation partition (7) contains a first flow guide chamber (15) and a second flow guide chamber (16). The first flow guide chamber (15) is located above the partition (11), and the second flow guide chamber (16) is located below the partition (11).

5. The anti-crystallization heating and insulation structure for a sulfuric acid storage tank according to claim 4, characterized in that: A water inlet pipe (17) is fixedly connected to the outside of the heating sleeve (6). The water inlet pipe (17) is connected to the cavity of the diversion chamber (14). One end of the water inlet pipe (17) is fixedly connected to the output end of the water circulation heating mechanism (21) through the water inlet connecting pipe (9). A first drain pipe (18) and a second drain pipe (19) are fixedly connected to both sides of the diversion chamber (14). The first drain pipe (18) is connected to the cavity of the first guide chamber (15). The second drain pipe (19) is connected to the cavity of the second guide chamber (16). The first drain pipe (18) and the second drain pipe (19) are fixedly connected to the input end of the water circulation heating mechanism (21) through the water inlet and drain connecting pipe (8).

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