1, 3-butadiene storage and transportation tank

Abstract

The utility model discloses a 1, 3-butadiene storage and transportation tank which comprises a mounting seat, an outer tank and an inner tank, the outer tank is horizontally mounted on the mounting seat, an inner cavity of the inner tank is a storage cavity used for storing 1, 3-butadiene, the inner tank is mounted inside the outer tank, a partition cavity is arranged between the outer wall of the inner tank and the inner wall of the outer tank, and the partition cavity is communicated with the outer tank. A temperature adjusting mechanism used for controlling the temperature of the storage cavity to be below 21 DEG C is arranged in the partition cavity. An air inlet pipe, an inflation pipe, a temperature and pressure monitoring device and an oxygen content monitoring device are installed on the top wall of the outer tank. The outlet ends of the gas inlet pipe and the gas filling pipe and the monitoring ends of the temperature and pressure monitoring device and the oxygen content monitoring device respectively extend into the storage cavity. According to the storage and transportation tank, the stability and safety of a storage environment can be guaranteed, 1, 3-butadiene is prevented from going bad, the problem of monitoring the temperature, pressure and oxygen content in the storage and transportation process of 1, 3-butadiene is solved, and the explosion risk caused by too high storage temperature, pressure and oxygen content is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dangerous chemical storage and transportation equipment field, concretely relates to a 1,3-butadiene storage and transportation tank. BACKGROUND

[0002] 1,3-butadiene is one of the basic raw materials of petroleum chemical industry, and its position in the raw material of petroleum chemical olefin is only inferior to ethylene and propylene, and it is mainly used for the production of synthetic rubber. 1,3-butadiene is very unstable, has low flash point, small ignition energy, low lower explosion limit, large explosion range, and is dangerous to burn and explode when encountering fire source. Once an explosion and fire accident occurs, it will also cause serious damage. As a component of liquefied gas, 1,3-butadiene often self-polymerizes during disposal and storage, producing polymers, so it is very important to do a good job in the safe storage and transportation of 1,3-butadiene. The increase of temperature will make 1,3-butadiene produce polymers and explode. Moreover, the storage tank for transporting 1,3-butadiene has high requirements for oxygen content, and at the same time, the pressure inside the storage tank will also affect the self-polymerization reaction of 1,3-butadiene.

[0003] During actual transportation, the oxygen content inside the storage tank storing 1,3-butadiene must be less than 0.35%, because when the oxygen content exceeds the standard, 1,3-butadiene is easy to be oxidized and deteriorated to generate peroxide. The accumulation of the amount of peroxide has potential danger, because peroxide is very unstable, and when it is subjected to low heat, friction, vibration or contact with oxidant, it is easy to explode. Moreover, if stored for a long time, the storage temperature of 1,3-butadiene should be below 25℃. The suitable storage temperature of 1,3-butadiene is 18℃, and when the storage temperature is greater than 21℃, the amount of peroxide in 1,3-butadiene increases significantly. Industrial device production operation shows that: storing 1,3-butadiene at 18℃ is safe, stable and energy-saving. Adjusting the storage temperature of 1,3-butadiene from 13℃ to 18℃ can make the device operation cost decrease by 43%. In addition, the higher the storage pressure of 1,3-butadiene, the easier it is to self-polymerize, therefore, the storage pressure of 1,3-butadiene should be generally controlled at 0.2-0.3Mpa to reduce the generation of polymers.

[0004] In addition, the physical and chemical properties of butadiene require higher storage conditions, and any impurity will affect its quality, causing unqualified quality, affecting sales and causing economic losses.

[0005] The traditional 1,3-butadiene storage and transportation tank adopts ordinary tank body structure, cannot timely monitor the oxygen content, temperature and pressure in the tank, and generally uses a spraying device to spray water on the surface of the tank for cooling, which cannot keep the temperature in the tank stable, and has certain safety hidden dangers. UTILITY MODEL CONTENTS

[0006] The utility model wants to solve the technical problem, aiming at the deficiency of prior art, provide a kind of 1,3-butadiene storage and transportation tank, can guarantee the stability and security of 1,3-butadiene storage environment, prevent 1,3-butadiene deterioration, solve 1,3-butadiene storage and transportation process temperature, pressure and oxygen content monitoring problem, avoid the explosion risk caused by storage temperature, pressure and oxygen content too high.

[0007] The utility model discloses the technical scheme that the above technical problem is solved as follows: a kind of 1,3-butadiene storage and transportation tank, including mounting seat, outer tank and inner tank, the outer tank horizontal installation on the mounting seat, the inner cavity of the inner tank is the storage cavity for storing 1,3-butadiene, the inner tank is installed in the inside of the outer tank, the outer wall of the inner tank and the inner wall of the outer tank are equipped with partition cavity, temperature adjusting mechanism for controlling the temperature of the storage cavity below 21 ℃ is arranged in the partition cavity, the top wall of the outer tank is equipped with air inlet pipe, gas filling pipe, temperature pressure monitoring device and oxygen content monitoring device, the outlet end of the air inlet pipe and gas filling pipe and the monitoring end of the temperature pressure monitoring device and oxygen content monitoring device are respectively inserted into the storage cavity, the air inlet pipe is used to inject 1,3-butadiene into the storage cavity, the gas filling pipe is used to inject dry refined nitrogen into the storage cavity, the temperature pressure monitoring device is used to monitor the temperature and pressure in the storage cavity, and the oxygen content monitoring device is used to monitor the oxygen content in the storage cavity.

[0008] The utility model storage and transportation tank uses, 1,3-butadiene is injected into storage cavity by air inlet pipe, after injection is completed, dry refined nitrogen is injected into storage cavity by gas filling pipe, to ensure that no other impurities enter storage cavity, so as to guarantee the stability and security of 1,3-butadiene storage environment. In the process of transportation or storage, the temperature, pressure and oxygen content of 1,3-butadiene in storage cavity are monitored in real time by temperature pressure monitoring device and oxygen content monitoring device, so as to facilitate timely human intervention when monitoring data is abnormal, and the temperature of storage cavity is controlled below 21 ℃ by temperature adjusting mechanism, to prevent 1,3-butadiene from exploding due to high storage temperature.

[0009] Temperature pressure monitoring device, oxygen content monitoring device and refrigerant in the utility model adopt prior art.

[0010] As preferred, the temperature adjusting mechanism comprises refrigerant filled in the partition cavity.

[0011] As preferred, the top of the inner wall of the inner tank is vertically installed with a plurality of baffles, and the adjacent two baffles are connected through a plurality of connecting plates.

[0012] As preferred, the air inlet pipe is installed at the middle position of the top wall of the outer tank, the air charging pipe is installed close to the air inlet pipe, the temperature and pressure monitoring device and the oxygen content monitoring device are respectively installed at the two side positions of the top wall of the outer tank, the monitoring end of the temperature and pressure monitoring device extends into the bottom position of the storage cavity, and the monitoring end of the oxygen content monitoring device extends into the top position of the storage cavity.

[0013] As preferred, the inner tank is installed in the inner part of the outer tank through a plurality of supporting rods.

[0014] As preferred, the mounting seat comprises a mounting base, a pair of fixing seats and a pair of mounting racks, the pair of fixing seats are respectively fixed on the mounting base, the pair of mounting racks are respectively fixed on the pair of fixing seats, and the outer tank is horizontally installed on the pair of mounting racks through fixing bolts.

[0015] Compared with the prior art, the 1,3-butadiene storage and transportation tank has the following advantages: the temperature and pressure monitoring device and the oxygen content monitoring device are installed on the top wall of the outer tank, and the temperature adjusting mechanism is arranged between the inner tank and the outer tank, so that the temperature of 1,3-butadiene can be stably controlled below 21 DEG C during transportation or storage, the oxygen content in the storage cavity can be monitored in real time, a dry and pure nitrogen charging pipe is additionally installed to inject dry and pure nitrogen into the storage cavity, the stability and safety of the 1,3-butadiene storage environment are ensured, the problems of temperature, pressure and oxygen content monitoring during the storage and transportation of 1,3-butadiene are solved, the deterioration of 1,3-butadiene is prevented, and the explosion risk caused by the excessively high storage temperature, pressure and oxygen content is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a front view of the 1,3-butadiene storage and transportation tank in the embodiment;

[0017] Figure 2 is a longitudinal section view of the 1,3-butadiene storage and transportation tank in the embodiment;

[0018] The specific reference signs in the drawings are as follows:

[0019] 1 - mounting seat, 11 - mounting base, 12 - fixing seat, 13 - mounting frame, 2 - outer tank, 21 - partition cavity, 22 - air inlet pipe, 23 - air charging pipe, 24 - temperature and pressure monitoring device, 25 - oxygen content monitoring device, 26 - refrigerant, 27 - temperature insulation cotton, 28 - fixing bolt, 3 - inner tank, 31 - support rod, 32 - baffle, 33 - connecting plate, 4 - storage cavity. DETAILED DESCRIPTION

[0020] The utility model will be described in further detail below in combination with the drawings. The materials, devices or components not specified in the utility model all adopt the conventional technical means in the field.

[0021] The 1,3-butadiene storage and transportation tank in the embodiment, as shown in Figure 1 and Figure 2 , comprises a mounting seat 1, an outer tank 2 and an inner tank 3, the outer tank 2 is installed horizontally on the mounting seat 1, the inner cavity of the inner tank 3 is a storage cavity 4 for storing 1,3-butadiene, the inner tank 3 is installed inside the outer tank 2 through a plurality of support rods 31, a partition cavity 21 is arranged between the outer wall of the inner tank 3 and the inner wall of the outer tank 2, a temperature adjusting mechanism for controlling the temperature of the storage cavity 4 below 21℃ is arranged in the partition cavity 21, an air inlet pipe 22, an air charging pipe 23, a temperature and pressure monitoring device 24 and an oxygen content monitoring device 25 are installed on the top wall of the outer tank 2, the outlet ends of the air inlet pipe 22 and the air charging pipe 23 and the monitoring ends of the temperature and pressure monitoring device 24 and the oxygen content monitoring device 25 respectively extend into the storage cavity 4, wherein the air inlet pipe 22 is installed at the middle position of the top wall of the outer tank 2, the air charging pipe 23 is installed close to the air inlet pipe 22, the temperature and pressure monitoring device 24 and the oxygen content monitoring device 25 are respectively installed at the two side positions of the top wall of the outer tank 2, the monitoring end of the temperature and pressure monitoring device 24 extends into the bottom position of the storage cavity 4, the monitoring end of the oxygen content monitoring device 25 extends into the top position of the storage cavity 4, the air inlet pipe 22 is used for injecting 1,3-butadiene into the storage cavity 4, the air charging pipe 23 is used for injecting dry refined nitrogen into the storage cavity 4, the temperature and pressure monitoring device 24 is used for monitoring the temperature and pressure in the storage cavity 4, and the oxygen content monitoring device 25 is used for monitoring the oxygen content in the storage cavity 4.

[0022] In the embodiment, the temperature adjusting mechanism comprises refrigerant 26 filled in the partition cavity 21, and temperature insulation cotton 27 filled in both sides of the partition cavity 21.

[0023] In the embodiment, the top of the inner wall of the inner tank 3 is vertically provided with a plurality of baffles 32, and the adjacent two baffles 32 are connected through a plurality of connecting plates 33.

[0024] In the embodiment, the mounting seat 1 comprises a mounting base 11, a pair of fixing seats 12 and a pair of mounting racks 13, the pair of fixing seats 12 are fixed on the mounting base 11 respectively, and the pair of mounting racks 13 are fixed on the pair of fixing seats 12 respectively, and the outer tank 2 is horizontally mounted on the pair of mounting racks 13 through fixing bolts 28.

[0025] Although the embodiments of the present application have been shown and described, it should be understood by those ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A 1,3-butadiene storage tank characterized by, The utility model provides a 1,3-butadiene storage device, which comprises a mounting base, an outer tank and an inner tank, the outer tank is horizontally mounted on the mounting base, the inner cavity of the inner tank is a storage cavity for storing 1,3-butadiene, the inner tank is mounted in the inner tank, a partition cavity is arranged between the outer wall of the inner tank and the inner wall of the outer tank, a temperature adjusting mechanism for controlling the temperature of the storage cavity below 21 DEG C is arranged in the partition cavity, an air inlet pipe, a gas filling pipe, a temperature and pressure monitoring device and an oxygen content monitoring device are mounted on the top wall of the outer tank, the outlet ends of the air inlet pipe and the gas filling pipe and the monitoring ends of the temperature and pressure monitoring device and the oxygen content monitoring device respectively extend into the storage cavity, the air inlet pipe is used for injecting 1,3-butadiene into the storage cavity, the gas filling pipe is used for injecting dry pure nitrogen into the storage cavity, the temperature and pressure monitoring device is used for monitoring the temperature and pressure in the storage cavity, and the oxygen content monitoring device is used for monitoring the oxygen content in the storage cavity.

2. A 1,3-butadiene storage tank according to claim 1, wherein The temperature adjusting mechanism comprises a refrigerant, and the refrigerant is filled in the partition cavity.

3. A 1,3-butadiene storage tank according to claim 2, wherein The partition cavity is also filled with temperature insulation cotton, and the temperature insulation cotton is filled on both sides of the partition cavity.

4. The 1,3-butadiene storage tank of claim 1, wherein The top of the inner wall of the inner tank is vertically provided with a plurality of baffles, and adjacent two baffles are connected through a plurality of connecting plates.

5. The 1,3-butadiene storage tank of claim 1, wherein The air inlet pipe is mounted at the middle position of the top wall of the outer tank, the mounting position of the gas filling pipe is close to the air inlet pipe, the temperature and pressure monitoring device and the oxygen content monitoring device are respectively mounted at the two side positions of the top wall of the outer tank, the monitoring end of the temperature and pressure monitoring device extends into the bottom position of the storage cavity, and the monitoring end of the oxygen content monitoring device extends into the top position of the storage cavity.

6. A 1,3-butadiene storage tank according to claim 1, wherein The inner tank is mounted in the outer tank through a plurality of supporting rods.

7. A 1,3-butadiene storage tank according to claim 1, wherein The mounting base comprises a mounting base, a pair of fixing bases and a pair of mounting racks, the pair of fixing bases are respectively fixed on the mounting base, the pair of mounting racks are respectively fixed on the pair of fixing bases, and the outer tank is horizontally mounted on the pair of mounting racks through fixing bolts.

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