Methanol storage tank

Abstract

The utility model discloses a methanol storage tank which comprises a first tank body, a second tank body and a heat insulation assembly, the first tank body is arranged on the outer side of the second tank body and completely wraps the second tank body, a gap exists between the first tank body and the second tank body, and the heat insulation assembly is filled in the gap between the first tank body and the second tank body. An anti-explosion opening is formed in the top of the first tank body and penetrates through the heat insulation assembly to extend to the top of the inner wall of the second tank body, a liquid inlet and a liquid outlet are formed in the bottom of the outer wall of the first tank body, the liquid inlet penetrates through the heat insulation assembly to extend to the top of the inner wall of the second tank body, and the liquid outlet penetrates through the heat insulation assembly to extend to the bottom of the inner wall of the second tank body; supporting legs are fixedly arranged at the bottom of the first tank body. The utility model has the beneficial effects of reasonable structure, high safety and good heat insulation effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical equipment, concretely relates to a methanol storage tank. BACKGROUND

[0002] Methanol (Methanol) also called hydroxyl methyl, wood alcohol (wood alcohol) or wood spirits (wood spirits), it is an organic compound, is the simplest structure of saturated monohydric alcohol, its chemical formula is CH3OH / CH4O. Molecular weight is 32.04, boiling point is 64.7 ℃. Methanol has toxicity and highly flammable, its vapor mixes with air, can form explosive mixture. Toxic after swallowing, toxic with skin contact, toxic to inhale, short-term exposure has the risk of serious damage to health, GHS danger class.

[0003] For the storage of methanol should be placed in cool, well-ventilated special warehouse, away from fire, heat source. Warehouse temperature should not exceed 37 DEG C, keep the container sealed. Should be stored separately from oxidizing agents, acids, alkali metals, and avoid mixing storage.

[0004] For the storage of a large amount of methanol needs to set up a special sealed container, such as stainless steel or high-density polyethylene barrels. The container should be checked regularly, to ensure that there is no leakage and damage. And warehouse should be kept dry, well-ventilated, temperature control in 15-30 DEG C, relative humidity is not more than 70%, these conditions help to prevent methanol from absorbing moisture and volatile, so as to maintain its chemical stability.

[0005] The current market for the storage of methanol still remains in the stage of stainless steel or high-density polyethylene barrels, lack of safe and reliable device for the storage of a large amount of methanol. UTILITY MODEL CONTENT

[0006] In order to solve the above problems, the utility model aims at providing a methanol storage tank with reasonable structure, high safety and good heat insulation effect.

[0007] According to one aspect of the utility model, provide a kind of methanol storage tank, comprising: first tank body, second tank body and heat insulation component, first tank body is arranged at the outside of second tank body and completely covers second tank body, there is gap between first tank body and second tank body, heat insulation component is filled in the gap between first tank body and second tank body, the top of first tank body is equipped with explosion vent, explosion vent extends to the top of the inner wall of second tank body through heat insulation component, the bottom of the outer wall of first tank body is equipped with liquid inlet and liquid outlet, liquid inlet extends to the top of the inner wall of second tank body through heat insulation component, liquid outlet extends to the bottom of the inner wall of second tank body through heat insulation component, support leg is fixedly arranged at the bottom of first tank body.

[0008] In some embodiments, the heat insulation component includes: a first heat insulation layer, a vacuum layer, and a second heat insulation layer. The vacuum layer is fixedly arranged between the first tank body and the second tank body. The first heat insulation layer is filled between the vacuum layer and the first tank body, and the first heat insulation layer is filled between the vacuum layer and the second tank body. By arranging the first heat insulation layer, the vacuum layer, and the second heat insulation layer in multiple layers, the heat insulation effect is improved, and methanol evaporation is prevented.

[0009] In some embodiments, the vacuum layer is connected to the first tank body and the second tank body by a plurality of fixed rods. The vacuum layer, the first tank body, and the second tank body are coaxially arranged. The fixed rods are arranged in a ring array in multiple layers with the axial direction of the second tank body as the center. The fixed rods fix the vacuum layer, the first tank body, and the second tank body. The vacuum layer has a very small thermal conductivity, thereby achieving better heat insulation effect.

[0010] In some embodiments, 4-8 groups of fixed rods are arranged in the same plane. The multiple groups of fixed rods more stably fix the vacuum layer and the second tank body.

[0011] In some embodiments, the first heat insulation layer and the second heat insulation layer are both expanded perlite. The low-temperature thermal conductivity of expanded perlite is 0.028-0.038 W / (m·K), which allows methanol to be stored in a stable temperature environment.

[0012] In some embodiments, a vacuum testing port is arranged at the bottom of the vacuum layer, and the vacuum testing port extends out of the bottom of the first tank body. The vacuum layer is vacuumized and the vacuum degree is detected through the vacuum testing port, so that the vacuum layer has a very small thermal conductivity.

[0013] In some embodiments, a thermometer port is arranged at the center of the bottom of the first tank body, and the thermometer port extends to the inner wall of the second tank body. The temperature in the second tank body is detected through the thermometer port.

[0014] In some embodiments, the bottom of the first tank body is provided with a gas phase equilibrium port extending to the inner wall bottom of the second tank body. The storage tank can keep pressure stable through gas exchange when overpressure or vacuum, thereby protecting the storage tank from damage.

[0015] The utility model has: reasonable structure, high safety, good heat insulation effect beneficial effect. The utility model discloses a heat insulation assembly is set up between the first tank body and the second tank body to facilitate guaranteeing that formaldehyde is stored in the second tank body does not rise to cause methanol volatilization with the change of external environment temperature, prevents the explosion accident from happening through the explosion -proof mouth isolation volatilized formaldehyde and spark direct contact, the first heat insulation layer, vacuum layer and the second heat insulation layer multilayer setting improve the heat insulation effect, prevent methanol volatilization, realize better heat insulation effect through the characteristic that vacuum layer heat transfer coefficient is very small through the fixed rod the fixation between vacuum layer, the first tank body and the second tank body, through the characteristic that vacuum layer heat transfer coefficient is very small, thereby realize better heat insulation effect, through the fixed rod of a plurality of multilayer for the fixation of vacuum layer and the second tank body is more stable, through the characteristic of low temperature thermal conductivity coefficient 0.028~0.038W / (m K) to make formaldehyde is in stable temperature storage environment, through the vacuum degree detection of the vacuum extraction port to the vacuum layer carries out vacuum extraction and vacuum degree detection, makes vacuum layer heat transfer coefficient very small, through setting up the thermometer mouth convenient for the temperature detection of the second tank body in, through the gas phase equilibrium port of the storage tank can keep pressure stable through gas exchange when overpressure or vacuum, thereby protecting the storage tank from damage. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model a kind of methanol storage tank;

[0017] Figure 2 It is a transverse sectional view of the utility model a kind of methanol storage tank;

[0018] Figure 3 It is a bottom view of the utility model a kind of methanol storage tank. DETAILED DESCRIPTION

[0019] The utility model will be explained in detail in connection with each embodiment shown in the drawings, but it should be explained that these embodiments are not the limitation of the utility model, and the equivalent transformation or replacement of function, method or structure made by the ordinary skill in the art according to these embodiments are all within the protection scope of the utility model.

[0020] In the description of the utility model, it is necessary to explain, unless otherwise stipulated and limited, the term "installation", "connection", "connection" should be broad sense understanding, for example, can be mechanical connection or electric connection, also can be two element inside's intercommunication, can be direct connection, also can be indirectly connected through intermediate medium, for ordinary skill in the art, the specific meaning of the term can be understood according to specific circumstances.

[0021] As Figure 1 The utility model discloses a methanol storage tank, including: first tank body 1, second tank body 2 and heat insulation component 3, first tank body 1 sets up at the outside of second tank body 2 and completely covers second tank body 2, and there is a gap between first tank body 1 and second tank body 2, heat insulation component 3 fills in the gap between first tank body 1 and second tank body 2, the top of first tank body 1 is equipped with explosion vent 4, and explosion vent 4 extends to the top of the inner wall of second tank body 2 through heat insulation component 3, the bottom of the outer wall of first tank body 1 is provided with liquid inlet 5 and liquid outlet 6, and liquid inlet 5 extends to the top of the inner wall of second tank body 2 through heat insulation component 3, and liquid outlet 6 extends to the bottom of the inner wall of second tank body 2 through heat insulation component 3, and support leg 7 is fixedly arranged at the bottom of first tank body 1. By setting heat insulation component 3 between first tank body 1 and second tank body 2, the methanol stored in second tank body 2 can be prevented from volatilizing due to the change of external environment temperature. The volatile methanol is isolated from the spark by explosion vent 4, preventing explosion accidents.

[0022] Extending liquid inlet 5 to the top of second tank body 2 facilitates filling the storage tank with constant pressure. If liquid is filled from the bottom, the pressure needs to be increased as the liquid in the tank increases. In addition, the flow from the top of second tank body 2 needs to be maintained at a relatively slow speed when filling methanol.

[0023] As Figure 2 The heat insulation component 3 includes a first heat insulation layer 31, a vacuum layer 32, and a second heat insulation layer 33. The vacuum layer 32 is fixedly arranged between the first tank body 1 and the second tank body 2. The first heat insulation layer 31 is filled between the vacuum layer 32 and the first tank body 1. The second heat insulation layer 33 is filled between the vacuum layer 32 and the second tank body 2. The multiple layers of the first heat insulation layer 31, the vacuum layer 32, and the second heat insulation layer 33 improve the heat insulation effect and prevent methanol from volatilizing.

[0024] The vacuum layer 32 is welded to the first tank body 1 and the second tank body 2 by a plurality of fixing rods 34. The vacuum layer 32, the first tank body 1, and the second tank body 2 are coaxially arranged. The fixing rods 34 are arranged in a ring array around the axis of the second tank body 2. The fixing rods 34 fix the vacuum layer 32, the first tank body 1, and the second tank body 2. The small thermal conductivity of the vacuum layer 32 achieves better heat insulation effect. The vacuum layer 32 is a hollow and sealed structure formed by welding a metal plate.

[0025] The fixing rods 34 are arranged in 4-8 groups in the same plane. The fixing of the vacuum layer 32 and the second tank body 2 is more stable through the multiple groups and multiple layers of the fixing rods 34.

[0026] In the production process, first, a part of the bottom of the second tank body 2 is welded, then one end of the fixing rod 34 is welded around the outer wall of the bottom of the second tank body 2, then the vacuum layer 32 is sleeved from the bottom of the second tank body 2, then the other end of the fixing rod 34 is welded to the inner side of the vacuum layer 32, then the outer metal plate of the vacuum layer 32 is edge-welded, then one end of the fixing rod 34 is welded around the outer wall of the vacuum layer 32, then the bottom of the first tank body 1 is sleeved from the bottom of the second tank body 2, and then the other end of the fixing rod 34 is welded to the inner side of the first tank body 1. The subsequent welding is the welding of increasing the second tank body 2, increasing the fixing rod 34, increasing the vacuum layer 32, and increasing the first tank body 1, until the top is sealed. During the welding process, it needs to be noted that after each welding of the second tank body 2 and the vacuum layer 32 is completed, detection needs to be performed, and the detection standard is 100% RT, and the radiographic testing level is not less than AB level, and the qualified level is not less than II level according to NB / T47013.2-2015; for the welding of the first tank body 1, detection needs to be performed after the welding is completed, and the detection standard is 20% RT, and is not less than 250mm, and the radiographic testing level is not less than AB level, and the qualified level is not less than III level according to NB / T47013.2-2015, and the outer shell joint seam is 100% PT, and is qualified according to NB / T47013.5-2015 I level.

[0027] Meanwhile, the vacuum layer 32, the first tank body 1 and the second tank body 2 adopt S39042 high-performance austenitic stainless steel, the submerged arc welding wire is H10Mn2, and the welding agent is SJ101; the stainless steel-stainless steel: the submerged arc welding wire is H03Cr19Ni12Mo2, and the welding agent is SJ601. The S39042 high-performance austenitic stainless steel has high strength, high corrosion resistance and high wear resistance, and has good weldability, and is suitable for automatic welding, argon arc welding and other welding processes.

[0028] The first heat insulation layer 31 and the second heat insulation layer 33 are both expanded perlite. By utilizing the characteristics of the low-temperature thermal conductivity coefficient 0.028-0.038 W / (m·K), the formaldehyde is stored in a stable temperature environment.

[0029] As shown in Figure 3 The bottom of the vacuum layer 32 is provided with a vacuum testing port 35, and the vacuum testing port 35 extends out of the bottom of the first tank body 1. The vacuum layer 32 is vacuumed and the vacuum degree is detected through the vacuum testing port 35, so that the thermal conductivity coefficient of the vacuum layer 32 is very small. When the vacuum is tested, it needs to ensure that the vacuum degree of the vacuum layer 32 is ≤5Pa.

[0030] A thermometer port 8 is arranged at the center of the bottom of the first tank body 1, and the thermometer port 8 extends to the inner wall bottom of the second tank body 2. The temperature in the second tank body 2 can be detected through the thermometer port 8.

[0031] A gas phase equilibrium port 9 is arranged at the bottom of the first tank body 1, and the gas phase equilibrium port 9 extends to the inner wall bottom of the second tank body 2. The gas phase equilibrium port 9 can keep the pressure stable through gas exchange when the tank is in overpressure or vacuum, so as to protect the tank from being damaged.

[0032] The above only describes some embodiments of the present application, and it should be pointed out that, for those skilled in the art, other modifications and improvements can be made without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A methanol storage tank characterized by, The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank.

2. A methanol storage tank according to claim 1, characterized in that The application relates to a double-layer vacuum heat-insulating tank.

3. A methanol storage tank according to claim 2, wherein The application relates to a double-layer vacuum heat-insulating tank.

4. A methanol storage tank according to claim 3, wherein The application relates to a double-layer vacuum heat-insulating tank.

5. A methanol storage tank according to any one of claims 2-4, characterized in that The application relates to a double-layer vacuum heat-insulating tank.

6. A methanol storage tank according to claim 5, wherein The application relates to a double-layer vacuum heat-insulating tank.

7. A methanol storage tank according to claim 6, wherein The application relates to a double-layer vacuum heat-insulating tank.

8. A methanol storage tank according to claim 7, wherein The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat-insulating tank. The application relates to a double-layer vacuum heat

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