Safe storage system for chemical raw materials

Abstract

A chemical raw material safe storage system comprises a storage tank, an inner pipeline set and a liquid inlet pipeline set, the liquid inlet pipeline set comprises a first liquid inlet pipeline and a second liquid inlet pipeline, the inner pipeline set is arranged in the storage tank and comprises a first inner pipeline and a second inner pipeline, the first inner pipeline is arranged in a spiral shape as a whole, and the second inner pipeline is arranged in a spiral shape as a whole. The first inner pipeline is arranged close to the inner wall of the storage tank, one end of the first inner pipeline is connected with the first liquid inlet pipeline, and a plurality of first liquid inlet holes are formed in the first inner pipeline; the second liquid inlet pipeline is communicated with the second inner pipeline through a pipeline, the second inner pipeline penetrates through the middle of the first inner pipeline which is spirally distributed in the vertical direction, and a plurality of second liquid inlet holes are formed in the second inner pipeline. Chemical raw materials at different positions in the storage tank are effectively cooled, the temperature control effect is good, and the product quality and the storage safety are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical raw material storage, especially to a chemical raw material safe storage system. BACKGROUND

[0002] Styrene is an important basic chemical raw material, which is widely used in the production process of synthetic rubber, plastic, resin and other polymer materials. Styrene has the characteristics of easy polymerization at high temperature, and the storage temperature needs to be controlled below 20 DEG C. If the storage temperature is not well controlled, it will affect the quality of the product, and even serious safety accidents will occur. Therefore, it is necessary to adopt the storage measures of combining circulation with cooling. The material in the storage tank is transported to the plate heat exchanger by the external circulation pump for cooling, and the material temperature is kept in the safe interval. At the same time, forced circulation is adopted to avoid local overheating and static deposition. This dynamic storage method can effectively inhibit the polymerization reaction and ensure the uniformity of the material, providing stable raw material supply for downstream production.

[0003] However, in the prior art, the styrene storage device adopted by the enterprise is only a simple circulation system for raw material circulation, that is, the raw material is introduced from the bottom of the storage tank and cooled in the heat exchanger, and then directly flows back to the storage tank through the pipeline. For large storage tanks, due to the relatively large space in the storage tank, and the hysteresis of heat conduction, there is still a problem of excessive local temperature in the storage tank using this method, which affects the quality of the product and brings trouble to the production enterprise. UTILITY MODEL CONTENTS

[0004] Therefore, it is necessary to provide a chemical raw material safe storage system in view of the deficiencies in the prior art.

[0005] A chemical raw material safe storage system, which comprises a storage tank, an inner pipeline group, and a liquid inlet pipeline group. The liquid inlet pipeline group comprises a first liquid inlet pipeline and a second liquid inlet pipeline. The inner pipeline group is arranged inside the storage tank and comprises a first inner pipeline and a second inner pipeline. The first inner pipeline is arranged in a spiral shape as a whole and is arranged close to the inner wall of the storage tank. One end of the first inner pipeline is connected to the first liquid inlet pipeline, and the other end of the first inner pipeline is closed. A plurality of first liquid inlet holes are arranged on the first inner pipeline, and the first inner pipeline is hollow inside to form a flow channel. The first liquid inlet holes are in communication with the flow channel inside the first inner pipeline. The second liquid inlet pipeline is in communication with the second inner pipeline. The end of the second inner pipeline away from the second liquid inlet pipeline is closed. The second inner pipeline is arranged in a straight tubular structure as a whole. The second inner pipeline passes through the middle of the spiral first inner pipeline in the vertical direction. The second inner pipeline is hollow inside to form a flow channel. A plurality of second liquid inlet holes are arranged on the second inner pipeline, and the second liquid inlet holes are in communication with the flow channel inside the second inner pipeline.

[0006] In one embodiment, the first inlet holes are distributed along the spiral extension direction of the entire first inner pipe, and the second inlet holes are distributed along the linear direction of the entire second inner pipe.

[0007] In one embodiment, the storage tank is provided with a liquid inlet at the top position, the liquid inlet extends from the top of the storage tank, and the second liquid inlet pipe and the second inner pipe are connected by the liquid inlet.

[0008] In one embodiment, a reversing valve is also included, with a first inlet pipe connected to a first inner pipe and the reversing valve, and a second inlet pipe connected to an inlet nozzle and the reversing valve.

[0009] In one embodiment, the system further includes a main feed pipe, an outlet pipe, and a water pump. The outlet of the water pump is connected to a reversing valve via a pipe, the main feed pipe is connected to the inlet of the water pump, and the outlet pipe is connected to a storage tank.

[0010] In one embodiment, the bottom of the storage tank is arranged in an inverted cone shape, and the liquid outlet pipe is connected to the bottom of the storage tank.

[0011] In one embodiment, a heat exchanger is also included, wherein the main feed pipe is connected to the inlet of the water pump and the heat exchanger, and the outlet pipe is connected to the storage tank and the heat exchanger.

[0012] In one embodiment, the opening of the first inlet hole faces the inside of the spirally distributed first inner channel.

[0013] The beneficial effects of this utility model chemical raw material safety storage system are as follows: By setting up an internal pipe group, which includes a first internal pipe and a second internal pipe, the first internal pipe is arranged in a spiral shape, and the second internal pipe passes through the middle of the spirally distributed first internal pipe in a vertical direction. During the circulation process, the chemical raw materials flowing out from the spirally distributed first internal pipe and the first liquid inlet at different positions cool down the chemical raw materials near the inner wall of the storage tank, and the chemical raw materials flowing out from the second internal pipe and the second liquid inlet at different positions cool down the chemical raw materials in the middle of the storage tank. This utility model effectively cools down the chemical raw materials in different positions in the storage tank, has a good temperature control effect, and improves the quality of the product and the safety of storage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the chemical raw material safe storage system of this utility model;

[0015] Figure 2 for Figure 1 The diagram shows the structure of the chemical raw material safety storage system after the storage tanks have been removed. Detailed Implementation

[0016] In order to make the above object, characteristics and advantages of the present application more apparent, concrete embodiments of the present application will be described in detail with reference to the drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different manners without departing from the spirit of the present application. Those skilled in the art will appreciate the scope of the present application and can make similar modifications without departing from the spirit of the present application. Therefore, the present application is not limited by the embodiments disclosed below.

[0017] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0018] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0019] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0021] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only embodiment.

[0022] Please refer to Figures 1 to 2 The utility model provides a kind of chemical raw materials safe storage system, for storing liquid chemical raw materials similar to styrene, the chemical raw materials safe storage system includes storage tank 10, liquid inlet pipeline group 20, inner pipeline group 30, main feed pipe 40, liquid outlet pipeline 50, water pump 60, reversing valve 70, heat exchanger 80, the inner pipeline group 30 is located inside storage tank 10, the water outlet of water pump 60 is connected to reversing valve 70 by pipeline, the liquid inlet pipeline group 20 connects reversing valve 70 and inner pipeline group 30, the main feed pipe 40 connects the water inlet of water pump 60 and heat exchanger 80, the liquid outlet pipeline 50 connects storage tank 10 and heat exchanger 80, chemical raw materials in storage tank 10 flow into heat exchanger 80 and cooling water exchanges heat by liquid outlet pipeline 50, and chemical raw materials are returned to storage tank 10 by reversing valve 70, liquid inlet pipeline group 20, inner pipeline group 30 under the action of water pump 60 after heat exchange is completed.

[0023] The bottom of the storage tank 10 is arranged in an inverted conical shape, the liquid outlet pipeline 50 is connected to the bottom position of the storage tank 10, the storage tank 10 is provided with a liquid inlet nozzle 11 at the top position, the liquid inlet nozzle 11 extends from the top of the storage tank 10, the liquid inlet pipeline group 20 includes a first liquid inlet pipeline 21 and a second liquid inlet pipeline 22, the inner pipeline group 30 includes a first inner pipeline 31 and a second inner pipeline 32, the first liquid inlet pipeline 21 is connected to the first inner pipeline 31 and the reversing valve 70, and the second liquid inlet pipeline 22 is connected to the liquid inlet nozzle 11 and the reversing valve 70.

[0024] Specifically, the first inner pipeline 31 is arranged in a spiral shape as a whole, and is arranged close to the inner wall of the storage tank 10. One end of the first inner pipeline 31 is connected to the first liquid inlet pipeline 21, and the other end of the first inner pipeline 31 is closed. The first inner pipeline 31 is hollow inside to form a flow channel. A plurality of first liquid inlet holes 311 are arranged on the first inner pipeline 31. The first liquid inlet holes 311 are arranged along the spiral extension direction of the first inner pipeline 31 as a whole. The first liquid inlet holes 311 are connected to the flow channel inside the first inner pipeline 31, and the openings of the first liquid inlet holes 311 face the inside of the spiral first inner pipeline 31.

[0025] The second inner pipeline 32 is arranged in a linear tubular structure as a whole, and is arranged close to the inner wall of the storage tank 10. One end of the second inner pipeline 32 is arranged on the liquid inlet nozzle 11 of the storage tank 10, and the other end of the second inner pipeline 32 is closed. The second inner pipeline 32 is hollow inside to form a flow channel. A plurality of second liquid inlet holes 321 are arranged on the second inner pipeline 32. The second liquid inlet holes 321 are arranged along the linear direction of the second inner pipeline 32 as a whole. The second liquid inlet holes 321 are connected to the flow channel inside the second inner pipeline 32. The openings of some of the second liquid inlet holes 321 face the front and back sides in the horizontal direction, and the openings of some of the second liquid inlet holes 321 face the left and right sides in the horizontal direction.

[0026] The external system controller can control the switching valve 70 to switch to the first state, the second state, or the third state. When the switching valve 70 is in the first state, the first liquid inlet pipeline 21 is in communication with the water pump 60, and the second liquid inlet pipeline 22 is in a cut-off state with the water pump 60. When the switching valve 70 is in the second state, the first liquid inlet pipeline 21 is in a cut-off state with the water pump 60, and the second liquid inlet pipeline 22 is in communication with the water pump 60. When the switching valve 70 is in the third state, the first liquid inlet pipeline 21 is in a cut-off state with the water pump 60, and the second liquid inlet pipeline 22 is in a cut-off state with the water pump 60.

[0027] In operation, the water pump 60 is started, and the external system controller controls the switching valve 70 to switch to the first state and the second state at different time periods. The chemical raw materials in the storage tank 10 flow into the heat exchanger 80 through the liquid outlet pipeline 50. When the switching valve 70 is in the first state, the cooled chemical raw materials flow into the first liquid inlet pipeline 21 and the first inner pipeline 31, and flow out of the first liquid inlet holes 311 on the first inner pipeline 31. The chemical raw materials flowing out of the first liquid inlet holes 311 on the first inner pipeline 31 and the chemical raw materials flowing out of the first liquid inlet holes 311 at different positions cool the chemical raw materials close to the inner wall of the storage tank 10.

[0028] When the reversing valve 70 is switched to the second state, the cooled chemical raw materials flow in from the first liquid inlet pipeline 21 and the second inner pipeline 32, and flow out from the second liquid inlet hole 321 on the second inner pipeline 32, and the chemical raw materials flowing out from the second inner pipeline 32 and the second liquid inlet hole 321 at different positions cool the chemical raw materials at the middle position of the storage tank 10. In the circulation process, the reversing valve 70 is switched to different states at different time periods to change the flow direction, which can avoid local overcooling or overheating in the storage tank 10, effectively control the temperature of different regions, and avoid excessive use of cooling liquid in the heat exchanger 80, thereby reducing energy consumption and refrigeration cost.

[0029] The chemical raw material safe storage system has the beneficial effects that: the inner pipeline group 30 is arranged, the inner pipeline group 30 includes the first inner pipeline 31 and the second inner pipeline 32, the first inner pipeline 31 is arranged in a spiral shape as a whole, the second inner pipeline 32 passes through the middle of the first inner pipeline 31 distributed in a spiral shape in the vertical direction, in the circulation flow process, the chemical raw materials flowing out from the first inner pipeline 31 distributed in a spiral shape and the first liquid inlet hole 311 at different positions cool the chemical raw materials close to the inner wall of the storage tank 10, and the chemical raw materials flowing out from the second inner pipeline 32 and the second liquid inlet hole 321 at different positions cool the chemical raw materials at the middle position of the storage tank 10, the chemical raw materials at different positions in the storage tank 10 are effectively cooled, the temperature control effect is good, the polymerization phenomenon of the chemical raw materials in the storage tank is effectively reduced, and the product quality and storage safety are improved.

[0030] The technical features of the above-described embodiments can be combined in any manner, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0031] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A chemical raw material safe storage system characterized by comprising: The application relates to a liquid storage tank, which comprises a storage tank, an inner pipeline group, a liquid inlet pipeline group, a first liquid inlet pipeline and a second liquid inlet pipeline, wherein the inner pipeline group is arranged in the inner part of the storage tank and comprises a first inner pipeline and a second inner pipeline; the first inner pipeline is arranged in a spiral shape as a whole, is arranged close to the inner wall of the storage tank, is connected with the first liquid inlet pipeline at one end, is closed at the other end, is provided with a plurality of first liquid inlet holes, is hollow in the inner part, forms a flow channel, and the first liquid inlet holes are communicated with the flow channel in the inner part of the first inner pipeline; the second liquid inlet pipeline is communicated with the second inner pipeline, the second inner pipeline is closed at the end far from the second liquid inlet pipeline, is arranged in a linear tubular structure as a whole, passes through the middle part of the first inner pipeline arranged in a spiral shape in the vertical direction, is hollow in the inner part, forms a flow channel, is provided with a plurality of second liquid inlet holes, and the second liquid inlet holes are communicated with the flow channel in the inner part of the second inner pipeline.

2. The chemical raw material safe storage system according to claim 1, characterized by, The first liquid inlet holes are distributed along the spiral extension direction of the first inner pipeline as a whole, and the second liquid inlet holes are distributed along the linear direction of the second inner pipeline as a whole.

3. The chemical raw material safe storage system according to claim 1, characterized in that, The storage tank is provided with a liquid inlet nozzle at the top part, the liquid inlet nozzle extends from the top part of the storage tank, and the second liquid inlet pipeline and the second inner pipeline are communicated through the liquid inlet nozzle.

4. The chemical raw material safe storage system according to claim 3, characterized by, The application further comprises a reversing valve, the first liquid inlet pipeline is connected with the first inner pipeline and the reversing valve, and the second liquid inlet pipeline is connected with the liquid inlet nozzle and the reversing valve.

5. The chemical raw material safe storage system according to claim 4, wherein The application further comprises a main feeding pipeline, a liquid outlet pipeline and a water pump, the water outlet of the water pump is connected with the reversing valve through a pipeline, the water inlet of the water pump is connected with the main feeding pipeline, and the liquid outlet pipeline is connected with the storage tank.

6. The chemical raw material safe storage system according to claim 5, wherein The bottom part of the storage tank is arranged in an inverted conical shape, and the liquid outlet pipeline is connected with the bottom part of the storage tank.

7. The chemical raw material safe storage system according to claim 5, wherein The application further comprises a heat exchanger, the water inlet of the water pump is connected with the main feeding pipeline and the heat exchanger, and the liquid outlet pipeline is connected with the storage tank and the heat exchanger.

8. The chemical raw material safe storage system according to claim 1, characterized in that, The hole openings of the first liquid inlet holes are directed to the inner side of the first inner pipeline arranged in a spiral shape.

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