Horizontal molten salt tank for n-butane oxidation process

Abstract

The utility model belongs to the technical field of fused salt storage equipment, and particularly relates to a horizontal fused salt tank for an n-butane oxidation process, which comprises a fused salt tank body arranged underground, an internal heating coil pipe is arranged in the fused salt tank body, an external heat tracing coil pipe is arranged outside the fused salt tank body, a liquid accumulation bag is arranged at the bottom of the fused salt tank, and the liquid accumulation bag is arranged in the fused salt tank body. A submerged molten salt pump is arranged in the molten salt tank body, and a pump body is submerged in the liquid accumulation bag. The underground fused salt storage tank is adopted, the size of the underground fused salt storage tank can be adjusted according to the occupied area, and flexibility is high. By adopting the design of the underground tank, the built-in fused salt heating coil and the external fused salt tank heat tracing coil, the height of the reactor is reduced, the manufacturing cost is reduced, and the problem of blockage caused by accumulation of fused salt in a pipeline and equipment during salt drainage is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of molten salt storage equipment, and in particular relates to a horizontal molten salt tank used in a normal butane oxidation process. Background Art

[0002] Molten salt is used as a heat transfer medium in the n-butane oxidation reactor, and a storage container is required to be configured to perform the purpose of melting the solid molten salt and storing the salt after the reactor is desalted. The traditional process uses an above-ground, horizontal molten salt storage tank. The salt discharge position of the oxidation reactor is relatively high, which is difficult to manufacture and costly, and is not conducive to the smooth discharge of the molten salt. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the purpose of the utility model is to provide a horizontal molten salt tank for n-butane oxidation process, which adopts an underground square molten salt storage tank design to reduce the difficulty of manufacturing and salt discharge.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a horizontal molten salt tank for n-butane oxidation process, including a molten salt tank body arranged underground, a built-in heating coil is arranged inside the molten salt tank body, an external heating coil is arranged outside the molten salt tank body, a liquid accumulation bag is arranged at the bottom of the molten salt tank, a submersible molten salt pump is arranged inside the molten salt tank body, and the pump body of the submersible molten salt pump is submerged in the liquid accumulation bag.

[0005] Furthermore, a liquid accumulation bag heating pipe is provided on the outer wall of the liquid accumulation bag, and the liquid accumulation bag heating pipe extends out of the top of the molten salt tank body.

[0006] Furthermore, a fluid effusion bag thermometer is provided in the fluid effusion bag.

[0007] Furthermore, a plurality of built-in heating coil support frames are vertically arranged at the bottom of the molten salt tank body, and the built-in heating coils are fixed on the plurality of built-in heating coil support frames.

[0008] Furthermore, a plurality of pressure gauges and a plurality of liquid level gauges are arranged on the top of the molten salt tank.

[0009] Furthermore, an exhaust port is provided at the top of the molten salt tank.

[0010] Furthermore, a plurality of molten salt tank thermometers are arranged on the side of the molten salt tank body.

[0011] Furthermore, the molten salt tank body is a square structure, and the outer surface of the molten salt tank body is supported by a plurality of transverse channel steels and vertical channel steels.

[0012] Furthermore, the built-in heating coil, the external heating coil and the liquid bag heating pipe are all heated by steam.

[0013] The utility model has the following beneficial effects: the utility model adopts an underground molten salt storage tank, the size of which can be adjusted according to the need for land occupation, and has high flexibility. The underground tank design is adopted, the molten salt heating coil is built in, and the molten salt tank heating coil is externally arranged, which is conducive to reducing the reactor height, reducing the manufacturing cost, and avoiding the accumulation of molten salt in the pipeline and equipment when the salt is discharged, causing blockage problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a horizontal molten salt tank of the utility model;

[0015] Figure 2 The cross section of the horizontal molten salt tank of the utility model is Figure 1 ;

[0016] Figure 3 The cross section of the horizontal molten salt tank of the utility model is Figure 2 ;

[0017] Figure 4 This is a top view of the horizontal molten salt tank of the utility model;

[0018] In the figure: 1. built-in heating coil, 2. external heating coil, 3. liquid accumulation bag, 4. liquid accumulation bag heating pipe, 5. liquid accumulation bag thermometer, 6. built-in heating coil support frame, 7. molten salt tank thermometer, 8. liquid level gauge, 9. exhaust port, 10. horizontal channel steel, 11. vertical channel steel, 12. submerged molten salt pump, 13. molten salt pump drive motor. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0020] See attached Figure 1-4 A horizontal molten salt tank for n-butane oxidation process, including a molten salt tank body arranged underground, a built-in heating coil 1 is arranged inside the molten salt tank body, an external heating coil 2 is arranged outside the molten salt tank body, a liquid accumulation bag 3 is arranged at the bottom of the molten salt tank, a liquid accumulation bag heating pipe 4 is arranged on the outer wall of the liquid accumulation bag 3, and the liquid accumulation bag heating pipe 4 extends out of the top of the molten salt tank body, a submerged molten salt pump 12 is arranged in the molten salt tank, the pump body is placed in the liquid accumulation bag 3, and the submerged molten salt pump 12 is driven by a molten salt pump driving motor 13 to pump out molten salt.

[0021] Based on the above technical solution, it should be noted that the molten salt tank adopts an underground tank design, and the height of the oxidation reactor can be reduced accordingly, thereby reducing the equipment manufacturing cost. At the same time, the salt discharge pipeline has a large angle, and there is no residue in the pipeline and equipment, which is safe and reliable. The molten salt tank body recorded in the utility model is arranged underground, that is, the horizontal height of the top of the molten salt tank body is lower than the horizontal height of the ground, and the size can be adjusted according to the need for land occupation.

[0022] Furthermore, a liquid bag thermometer 5 is provided in the liquid bag 3. The liquid bag 3 is provided at the bottom of the square molten salt tank to reduce the amount of molten salt accumulation, and the liquid bag thermometer 5 can display the molten salt temperature at the bottom of the molten salt tank in real time. The outer wall of the liquid bag 3 is provided with a liquid bag heating pipe 4, which is heated by steam and used to heat the molten salt. The liquid bag heating pipe 4 extends out of the top of the molten salt tank body to facilitate the introduction of steam. One or more liquid bags 3 can be designed, and the number and design position are determined according to the size of the molten salt tank and the number of submerged molten salt pumps 12.

[0023] Furthermore, a plurality of built-in heating coil support frames 6 are vertically arranged at the bottom of the molten salt tank, and the built-in heating coil 1 is fixed on the plurality of built-in heating coil support frames 6. The built-in heating coil 1 is a steam coil, which is used to melt the solid molten salt, heat the molten salt, and avoid the solidification of the molten salt in the dead corner.

[0024] Furthermore, the molten salt tank body is provided with a plurality of molten salt tank thermometers 7 on the side, and a plurality of liquid level gauges 8 and pressure gauges and other auxiliary facilities on the top. The specific number and location of the molten salt tank thermometers 7, liquid level gauges 8 and pressure gauges are determined according to the size of the molten salt tank, so as to facilitate the detection of relevant data at various locations of the molten salt tank.

[0025] Furthermore, an exhaust port 9 is provided at the top of the molten salt tank.

[0026] Furthermore, the molten salt tank body is a square structure, and the outer surface of the molten salt tank body is reinforced and supported by a plurality of transverse channel steels 10 and vertical channel steels 11 .

[0027] Based on the above technical solution, the external heating coil 2 can be fixed on a plurality of transverse channel steels 10 and vertical channel steels 11. The external heating coil 2 is a steam coil, which is heated by steam to maintain the melting temperature of the molten salt and avoid the problem of wall hanging.

[0028] It should be noted that the parts not described in detail in the present invention are prior art.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above examples, and there are many variations. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A horizontal molten salt tank for n-butane oxidation process, characterized in that: It comprises a molten salt tank body arranged underground, wherein a built-in heating coil is arranged inside the molten salt tank body, an external heating coil is arranged outside the molten salt tank body, a liquid accumulation bag is arranged at the bottom of the molten salt tank, a submerged molten salt pump is arranged inside the molten salt tank body, and the pump body of the submerged molten salt pump is submerged in the liquid accumulation bag.

2. The horizontal molten salt tank for n-butane oxidation process according to claim 1, characterized in that: A liquid effusion bag thermometer is arranged in the liquid effusion bag.

3. The horizontal molten salt tank for n-butane oxidation process according to claim 1, characterized in that: The outer wall of the liquid accumulation bag is provided with a liquid accumulation bag heating pipe, which extends out of the top of the molten salt tank body and is heated by steam.

4. The horizontal molten salt tank for n-butane oxidation process according to claim 1, characterized in that: A plurality of built-in heating coil support frames are vertically arranged at the bottom of the molten salt tank body, and the built-in heating coils are fixed on the plurality of built-in heating coil support frames.

5. The horizontal molten salt tank for n-butane oxidation process according to claim 1, characterized in that: A plurality of pressure gauges and a plurality of liquid level gauges are arranged on the top of the molten salt tank.

6. The horizontal molten salt tank for n-butane oxidation process according to claim 1, characterized in that: An exhaust port is provided on the top of the molten salt tank.

7. The horizontal molten salt tank for n-butane oxidation process according to claim 1, characterized in that: A plurality of molten salt tank thermometers are arranged on the side of the molten salt tank body.

8. The horizontal molten salt tank for n-butane oxidation process according to claim 1, characterized in that: The molten salt tank body is a square structure, and the outer surface of the molten salt tank body is supported by a plurality of transverse channel steels and vertical channel steels.

9. The horizontal molten salt tank for n-butane oxidation process according to claim 1, characterized in that: The built-in heating coil and the external heating coil are both heated by steam.

Images