Packing devices and systems

Abstract

This invention relates to a packing device and system, comprising: a packed tower body with a gas outlet at the top and a gas inlet at the bottom; random packing material filling the upper part of the packed tower body and located below the gas outlet; and structured packing material filling the lower part of the packed tower body and located above the gas inlet. The random packing material includes a first group of random packing material and a second group of random packing material, wherein the first group and the second group of random packing material have the same structure, but their arrangement differs. The packing device used in this invention is based on using random packing material in the upper part and structured packing material in the lower part. By combining these two types of packing material, the solution flows downwards along the gaps after entering the upper part of the packed tower body. Carbonates are less likely to crystallize in the packed tower body, and the structured packing material in the packed tower body ensures separation efficiency while also having lower gas resistance, thus improving the pressure loss of the packed tower body.

Description

Technical Field

[0001] This invention relates to the field of packing technology, and in particular to a packing device and system thereof. Background Technology

[0002] Packed towers are common equipment in the chemical industry. The packing material inside is the main factor determining the separation efficiency of a packed tower. Currently, packed towers generally use a uniform packing method, namely structured packing or random packing. Structured packing is generally arranged and stacked in a regular manner according to different geometric shapes or other requirements, with the packing materials tightly connected to form an ordered whole. Random packing is mostly a disordered stacking of a large number of small-volume packing materials with cylindrical shapes. The two types of packing have different characteristics. Although both have the function of separation, random packing has lower resistance and lower pressure drop, and is easier to fill. Structured packing has a lower specific surface area, can handle larger workloads, and has a more uniform gas-liquid distribution. At the same time, they also have different disadvantages. Because random packing is a disordered stacking of a large number of small-volume packing materials, its inherent randomness makes its separation effect poor. Structured packing has a larger overall volume, making the filling process more difficult and affecting the separation effect.

[0003] In chemical production processes, solutions often contain substances such as carbonates. When using a uniform, structured packing method, carbonate crystals can easily crystallize and clog the packing, resulting in high pressure loss in the packed tower. Conversely, using a single, random packing method can easily lead to agglomeration, significantly impacting separation efficiency. Therefore, selecting a more suitable packing method has become a pressing issue in this field. Summary of the Invention

[0004] The main objective of this invention is to overcome the defects of existing packing devices and systems, and to provide a new packing device and system. This new system can at least solve the technical problem that in chemical production processes, substances such as carbonates are easily present in the solution. When a uniform, structured packing method is used, carbonate crystals are very likely to cause blockage in the packing, resulting in high pressure loss in the packed tower. If a single random packing method is used, it is easy to agglomerate, which has a significant impact on the separation effect.

[0005] On one hand, a packing device is provided, comprising:

[0006] The packed tower body has a gas outlet at the top and a gas inlet at the bottom;

[0007] Random packing is used to fill the upper part of the packed tower body and is located below the gas outlet;

[0008] Structured packing is used to fill the lower end of the packed tower body and is located above the gas inlet;

[0009] The random packing includes a first group of random packing and a second group of random packing, wherein the first group of random packing and the second group of random packing have the same structure, but are arranged differently.

[0010] In one alternative embodiment, the first group of random packing is arranged in an ordered manner, while the second group of random packing is arranged in a disordered manner.

[0011] In one optional embodiment, the first set of random packing and the second set of random packing are arranged at a predetermined distance within the packed tower body, and the predetermined distance decreases sequentially from the bottom to the top of the packed tower body.

[0012] In one optional embodiment, the random packing includes a random packing body and connecting members;

[0013] Each of the random packing bodies is connected by the connecting member.

[0014] In one optional embodiment, the connector includes a first limiting member, a connecting rod, and a second limiting member;

[0015] The random packing body is provided with a connection hole, and the connection hole connects two adjacent random packing bodies;

[0016] The first limiting member is located at the first end of the connecting rod, and the second limiting member is located at the second end of the connecting rod.

[0017] In one optional embodiment, the first limiting member includes a first limiting body and a second limiting body nested from the inside out;

[0018] The diameter of the first limiting body is smaller than the diameter of the second limiting body.

[0019] In one optional embodiment, the filler body includes a plurality of regular protrusions, which are evenly arranged and have the same angle.

[0020] In one alternative embodiment, the number of the regular protrusions is 3-8.

[0021] In one alternative embodiment, the packed tower body includes a first section, a second section, and a third section integrally connected.

[0022] The diameters of the first segment, the second segment, and the third segment increase sequentially.

[0023] The random packing fills the first section of the packed tower body;

[0024] The structured packing fills the third section of the packed tower body.

[0025] On the other hand, a packing system is provided, the packing system comprising any of the packing devices described above.

[0026] The packing device used in the embodiments of the present invention has at least the following beneficial effects:

[0027] The packing device used in this embodiment of the invention is based on the use of random packing in the upper part and structured packing in the lower part. By combining the above two types of packing, the solution flows down along the gap after entering the upper part of the packed tower body. The carbonate does not easily crystallize in the packed tower body. The structured packing in the packed tower body ensures its separation effect and has lower gas resistance, thus improving the pressure loss of the packed tower body.

[0028] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] The specific packing device and its structure of the present invention are given in detail in the following embodiments and accompanying drawings. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the packing device structure provided in an embodiment of the present invention.

[0031] Figure 2 This is a schematic diagram of the structure of the random packing body in the packing device provided in the embodiment of the present invention, arranged in an ordered sequence.

[0032] Figure 3 This is a schematic diagram of the structure of the random packing body in the packing device provided in an embodiment of the present invention.

[0033] Figure label:

[0034] 1-Packed tower body, 2-Random packing, 101-Gas inlet, 102-Gas outlet, 103-Solution outlet, 3-Structured packing, 21-Random packing body, 22-First limiting element, 23-Connecting rod, 24-Second limiting element. Detailed Implementation

[0035] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation methods of the packing device and system proposed according to the present invention is provided in conjunction with the accompanying drawings and preferred embodiments.

[0036] Please see Figures 1 to 3The packing device of a preferred embodiment of the present invention includes: a packed tower body 1, random packing 2, and structured packing 3. The packed tower body 1 has a gas inlet 101 at the top and a gas outlet 102 at the bottom. The random packing 2 fills the upper end of the packed tower body 1 and is located below the gas inlet 101. The structured packing 3 fills the lower end of the packed tower body 1 and is located above the gas outlet 102. The random packing 2 includes a first group of random packing and a second group of random packing, wherein the first group of random packing and the second group of random packing have the same structure, but their arrangement is different.

[0037] The packing device used in this embodiment of the invention is based on the use of random packing 2 in the upper part and structured packing 3 in the lower part. By combining the above two packings, the solution flows down along the gap after entering the upper part of the packed tower body 1. The carbonate does not easily crystallize in the packed tower body 1. The structured packing 3 in the packed tower body 1 ensures its separation effect and has lower gas resistance, thus improving the pressure loss of the packed tower body 1.

[0038] In one alternative embodiment, the first group of random packing is arranged in an ordered manner, while the second group of random packing is arranged in a disordered manner.

[0039] In this embodiment of the invention, by setting the first group of random packing materials in an orderly arrangement and the second group of random packing materials in a disordered arrangement, the solution can flow down along the gaps after entering the upper part of the packed tower body 1. The carbonate is not easy to crystallize in the packed tower body 1, and the orderly packing material 3 in the packed tower body 1 ensures its separation effect.

[0040] Please see Figure 1 The packing device provided in this embodiment of the invention also has a solution outlet 103 at the bottom. Gas enters the packed tower body 1 through the gas outlet 102 and reacts sequentially through the structured packing 3 and the random packing 2. The gas flows out from the gas inlet 101 at the top of the packed tower body 1, and the liquid is discharged from the solution outlet 103 at the bottom of the packed tower body 1.

[0041] In one optional embodiment, the first set of random packing and the second set of random packing are arranged at a preset distance within the packing tower body 1, and the preset distance decreases sequentially from the bottom to the top of the packing tower body 1.

[0042] When the solution first enters the packed tower body 1, the temperature is relatively high. At this time, the first set of random packing and the second set of random packing can be set to be spaced a larger distance apart in the packed tower body 1 to increase the contact area between the liquid and the packing. The distance between them increases as the solution goes to the bottom of the tower to prevent carbonate from crystallizing in the packed tower body 1 and to ensure the separation effect.

[0043] In one optional embodiment, the random packing 2 includes a random packing body 21 and a connector; the random packing bodies 21 are connected by the connector.

[0044] Please see Figure 2 and Figure 3 In one optional embodiment, the connector includes a first limiting member 22, a connecting rod 23 and a second limiting member 24; a connecting hole is provided on the random packing body 21, and the connecting hole connects two adjacent random packing bodies 21; the first limiting member 22 is located at the first end of the connecting rod 23, and the second limiting member 24 is located at the second end of the connecting rod 23.

[0045] In one optional embodiment, the first limiting member 22 includes a first limiting body and a second limiting body nested from the inside out; the diameter of the first limiting body is smaller than the diameter of the second limiting body.

[0046] In one alternative embodiment, the filler body includes a plurality of regular protrusions, which are evenly arranged and have the same angle.

[0047] In one alternative embodiment, the number of regular protrusions is 3-8.

[0048] In one optional embodiment, the packed tower body 1 includes an integrally connected first section, second section and third section; wherein the diameters of the first section, second section and third section increase sequentially; random packing 2 is filled in the first section of the packed tower body 1; and structured packing 3 is filled in the third section of the packed tower body 1.

[0049] On the other hand, a packing system is also provided, characterized in that the packing system includes any of the packing devices described above.

[0050] After applying the packing device of this invention to the 4 million-ton coal-to-oil circulating gas decarbonization unit of XX Group, the pressure difference inside the tower can be reduced from 28kPa to 12kPa. Furthermore, when a single packing method is used in the tower, vanadate crystallization will cause the structured packing 3 inside the packing tower body 1 of the packing device to become clogged, and the unit needs to be shut down for maintenance every year. After adopting the packing method of combining random packing 2 and structured packing 3 in the packing device of this invention, only a shutdown for maintenance is required every three years, which greatly improves production efficiency and reduces production costs.

[0051] Before the modification of the packing method in the 1 million-ton coal-to-oil circulating gas decarbonization unit of XXX Group, the crystalline salt of the activator frequently filled the packing tower body 1. By using the combination of random packing 2 and structured packing 3 in the packing device of this invention, the frequency of major overhauls was reduced from once a year to once every three years, achieving cost reduction and efficiency improvement. In addition, the packing device of this invention reduced the pressure difference inside the tower from 30 kPa to 14 kPa, further demonstrating that the packing device of this invention can improve the pressure loss of the packing tower body 1.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the methods and techniques disclosed above without departing from the scope of the present invention to create equivalent embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A filling device, characterized in that The application relates to a packing system. The packing system comprises: a packing tower body, which is provided with a gas outlet at the top and a gas inlet at the bottom; randomly-packed fillers, which are filled in the upper end of the packing tower body and are located below the gas outlet; structured fillers, which are filled in the lower end of the packing tower body and are located above the gas inlet; wherein the randomly-packed fillers comprise a first group of randomly-packed fillers and a second group of randomly-packed fillers, the first group of randomly-packed fillers and the second group of randomly-packed fillers are of the same structure, and the first group of randomly-packed fillers and the second group of randomly-packed fillers are arranged in different orders; the first group of randomly-packed fillers is arranged in an ordered manner, and the second group of randomly-packed fillers is arranged in a disordered manner; 2. The filling device of claim 1, wherein the first group of randomly-packed fillers and the second group of randomly-packed fillers are arranged at a preset distance in the packing tower body, and the preset distance decreases in sequence from the bottom to the top of the packing tower body. The randomly-packed fillers comprise randomly-packed filler bodies and connecting pieces.

3. The filling device of claim 2, wherein, Each randomly-packed filler body is connected through the connecting pieces. The connecting pieces comprise first limiting pieces, connecting rods and second limiting pieces. The randomly-packed filler bodies are provided with connecting holes, and the connecting holes connect adjacent two randomly-packed filler bodies.

4. The filling device of claim 3, wherein The first limiting pieces are located at the first ends of the connecting rods, and the second limiting pieces are located at the second ends of the connecting rods. The first limiting pieces comprise first limiting bodies and second limiting bodies which are nested in sequence from inside to outside.

5. The filling device of claim 4, wherein, The diameter of the first limiting bodies is smaller than that of the second limiting bodies.

6. The filling device of claim 5, wherein, The filler bodies comprise a plurality of regular protrusions, the regular protrusions are uniformly arranged, and the angles of the regular protrusions are the same.

7. The filling device of claim 6, wherein, The number of the regular protrusions is 3-8. The packing tower body comprises a first section, a second section and a third section which are integrally connected. The diameters of the first section, the second section and the third section increase in sequence. The randomly-packed fillers are filled in the first section of the packing tower body.

8. A filling system characterized in that, The structured fillers are filled in the third section of the packing tower body. The packing system comprises the filler device according to any one of claims 1-7.

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