Propylene product storage and transportation system

Abstract

The utility model relates to the field of propylene storage and transportation, and discloses a propylene product storage and transportation system which comprises a PDH device, the PDH device is arranged on the rear side of a PP device, a connecting pipe is communicated and fixed between the PP device and the PDH device, a plurality of propylene spherical tanks are arranged on the right side of the PDH device, a conveying main pipe is communicated and fixed to the right side of the PDH device, and the conveying main pipe is provided with a plurality of propylene spherical tanks. Conveying branch pipes are fixedly arranged between the multiple propylene spherical tanks and the conveying main pipe in a communicating mode, first conveying pumps are arranged in the multiple conveying branch pipes, a mounting pipe is fixedly arranged between the PP device and the conveying main pipe in a communicating mode, and a second conveying pump is arranged in the mounting pipe; a plurality of crane pipes are arranged on the front side of the conveying main pipe. According to the utility model, the delivery process of the propylene product is simplified, the operation is convenient, and part of manpower is saved; the delivery pressure of propylene products is reduced, and the safety risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of propylene storage and transportation, in particular to a propylene product storage and transportation system. Background Art

[0002] Propylene is an organic compound with the molecular formula C3H6. It is a colorless, odorless, slightly sweet gas. It is flammable and produces a bright flame when burned. Its explosive limit in air is 2% to 11.1% [6-7]. It is insoluble in water but soluble in ethanol and ether. Propylene is one of the three basic raw materials for synthetic materials, with the largest usage being in the production of polypropylene. Propylene can also be used to produce acrylonitrile, propylene oxide, isopropyl alcohol, phenol, acetone, butanol, octanol, acrylic acid and its esters, propylene glycol, epichlorohydrin, and synthetic glycerin.

[0003] With the commissioning of the new PDH unit, propylene production has doubled. Previously, qualified propylene was piped to downstream propylene spherical tanks, with some used as feedstock in the PP unit and the remainder transported by tank truck to the acrylic acid unit. When the propylene spherical tanks reach their permitted storage limit, the pipeline propylene flow is switched to the PDH unit's propylene spherical tanks for temporary storage. In practice, this switching process is quite frequent. Furthermore, during the hot summer months, the PP unit's propylene spherical tanks can experience high pressure, necessitating gas-phase pressure equalization with the PDH unit's propylene spherical tanks.

[0004] At present, propylene comes from two PDH units, and its destination changes to pipeline transportation to propylene spherical tanks. Part of it is used as raw material consumption for the PP unit, and the rest is transported to the acrylic acid unit by tank trucks or sold outside. The total amount of propylene transported is far greater than the consumption of the PP unit, so a large tank truck transportation volume is generated. Therefore, there are the following disadvantages: the process of delivering propylene products is cumbersome and inconvenient to operate, which increases the pressure on delivering propylene products. Utility Model Content

[0005] The purpose of the utility model is to provide a propylene product storage and transportation system to solve the problem that the propylene product delivery process is complicated and inconvenient to operate, which increases the delivery pressure of the propylene product.

[0006] To achieve the above-mentioned utility model purpose, the present utility model adopts the following technical solutions: A propylene product storage and transportation system includes a PDH unit, the PDH unit is arranged at the rear side of the PP unit, a connecting pipe is fixedly connected and communicated between the PP unit and the PDH unit, several propylene spherical tanks are arranged on the right side of the PDH unit, a main conveying pipe is fixedly connected and communicated on the right side of the PDH unit, and several conveying branch pipes are respectively fixedly connected and communicated between several propylene spherical tanks and the main conveying pipe. A first conveying pump is respectively arranged inside several conveying branch pipes. An installation pipe is fixedly connected and communicated between the PP unit and the main conveying pipe, and a second conveying pump is arranged inside the installation pipe. Several loading arms are arranged on the front side of the main conveying pipe.

[0007] Preferably, a supporting main pipe is arranged at the rear side of the main conveying pipe, and several supporting branch pipes are respectively fixedly connected and communicated between several propylene spherical tanks and the supporting main pipe. A third conveying pump is respectively arranged inside several supporting branch pipes.

[0008] Preferably, several supporting columns are respectively fixed on the outer sides of several propylene spherical tanks.

[0009] Preferably, a workbench is respectively fixed between two adjacent propylene spherical tanks among several propylene spherical tanks.

[0010] Preferably, guardrails are respectively fixed on the top surfaces of several workbenches.

[0011] Preferably, ladders are respectively fixed on the front sides of several workbenches.

[0012] Compared with the prior art, a propylene product storage and transportation system adopting the above technical solutions has the following beneficial effects:

[0013] First, during use, the external delivery process of propylene products is simplified, which is convenient for operation and saves some manpower; the external delivery pressure of propylene products is reduced, and the safety risk decreases;

[0014] Second, during use, through the supporting main pipe, supporting branch pipes and third conveying pump, it is beneficial to transport propylene to downstream users or for loading onto trucks and ships, making the external delivery methods of propylene products diversified and easier to meet customer needs. Through the supporting columns, it is beneficial to support the propylene spherical tanks, improve the stability of the propylene spherical tanks, ensure the safety and reliability of the system operation, not only improve the structural strength of the propylene spherical tanks, but also simplify the daily maintenance and repair work, and ensure the long-term stable operation of the system;

[0015] III. During use, the workbench facilitates providing a convenient working space for the staff, enabling them to easily carry out the maintenance work of the propylene spherical tank. The guardrail facilitates protecting the staff and preventing them from falling off the workbench, thereby improving the safety of the staff. The ladder facilitates providing a convenient way for the staff to get on and off the workbench, improving work efficiency and comfort, facilitating daily maintenance and operation, reducing the physical consumption of the staff, and promoting the overall efficiency and safety of the workplace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the embodiment.

[0017] Figure 2 It is an exploded schematic diagram of the embodiment.

[0018] Figure 3 It is an exploded schematic diagram at the main conveying pipe and the support column in the embodiment.

[0019] Figure 4 It is of the embodiment Figure 2 and is an enlarged schematic diagram at position A.

[0020] In the figure: 1, PDH unit; 2, PP unit; 3, connecting pipe; 4, propylene spherical tank; 5, main conveying pipe; 6, conveying branch pipe; 7, first conveying pump; 8, installation pipe; 9, second conveying pump; 10, loading arm; 11, supporting main pipe; 12, supporting branch pipe; 13, third conveying pump; 14, support column; 15, workbench; 16, guardrail; 17, ladder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will describe in detail the preferred embodiments of the present invention with reference to the accompanying drawings.

[0022] As Figures 1-4 shown, a propylene product storage and transportation system includes a PDH unit 1, the PDH unit 1 is arranged at the rear side of the PP unit 2, a connecting pipe 3 is fixedly connected and communicated between the PP unit 2 and the PDH unit 1, several propylene spherical tanks 4 are arranged on the right side of the PDH unit 1, a main conveying pipe 5 is fixedly connected and communicated on the right side of the PDH unit 1, several conveying branch pipes 6 are respectively fixedly connected and communicated between the several propylene spherical tanks 4 and the main conveying pipe 5, first conveying pumps 7 are respectively arranged inside the several conveying branch pipes 6, an installation pipe 8 is fixedly connected and communicated between the PP unit 2 and the main conveying pipe 5, a second conveying pump 9 is arranged inside the installation pipe 8, and several loading arms 10 are arranged on the front side of the main conveying pipe 5.

[0023] In use, there are five propylene spherical tanks 4, all of which are 4000 m³ propylene spherical tanks 4. One of them is used as an unqualified propylene tank, and the remaining four are used as qualified propylene tanks. The propylene produced by the PDH unit 1 is transported to the PP unit 2 through the connecting pipe 3. The normal production consumption is about 40 t / h. The excess part is transported to the acrylic acid unit by tanker via road. If the two PDH units 1 are in full-load production at the same time, the loadable quantity is about 32.5 t / h, and the daily loadable quantity is about 35 trucks. If the downstream PP unit 2 or the acrylic acid unit shuts down, the product propylene can be stored in the propylene spherical tank 4 through the installation pipe 8 and the second transfer pump 9. When the inventory reaches the loading requirement for ship loading, it can be transported to the terminal for ship loading and then transported to customers by sea. Under the condition of ensuring the propylene consumption of the PP unit 2 and the safe storage capacity of the propylene spherical tank 4, the propylene produced by the PDH unit 1 is transported to the PP unit 2 according to the actual consumption of the PP unit 2; the remaining part of the propylene consumed by the PP unit 2 is directly transported by pipeline to the propylene spherical tank 4 of the PDH unit 1, and the original propane loading and unloading crane pipe 10 at the loading and unloading platform of the PDH unit 1 is transformed, and four new crane pipes 10 with propylene loading function are added. The external delivery process of propylene products is simplified, which is convenient for operation and saves some manpower; the external delivery pressure of propylene products is reduced, and the safety risk is decreased.

[0024] As Figures 1-4 shown, a supporting main pipe 11 is provided at the rear side of the conveying main pipe 5. A plurality of propylene spherical tanks 4 and the supporting main pipe 11 are respectively connected and fixed with supporting branch pipes 12, and third transfer pumps 13 are respectively arranged inside the plurality of supporting branch pipes 12.

[0025] In use, through the supporting main pipe 11, the supporting branch pipes 12 and the third transfer pumps 13, it is beneficial to transport propylene to downstream users or for loading and ship loading, making the external delivery methods of propylene products diversified and easier to meet customer needs.

[0026] As Figures 1-4 shown, a plurality of support columns 14 are respectively fixed on the outer sides of the plurality of propylene spherical tanks 4, and workbenches 15 are respectively fixed between two adjacent propylene spherical tanks 4 among the plurality of propylene spherical tanks 4.

[0027] In use, through the support columns 14, it is beneficial to support the propylene spherical tanks 4, improve the stability of the propylene spherical tanks 4, ensure the safety and reliability of the system operation, not only improve the structural strength of the propylene spherical tanks 4, but also simplify the daily maintenance and repair work, and ensure the long-term stable operation of the system. Through the workbenches 15, it is beneficial to provide a convenient working space for the staff, enabling them to easily carry out the maintenance work of the propylene spherical tanks 4.

[0028] As Figure 2 and Figure 4As shown in the figure, guardrails 16 are respectively fixed on the top surfaces of several workbenches 15, and ladders 17 are respectively fixed on the front sides of several workbenches 15.

[0029] In use, the guardrails 16 are beneficial to protecting the staff, preventing the staff from falling off the workbench 15, thereby improving the safety of the staff. The ladders 17 are beneficial to providing a convenient way for the staff to get on and off the workbench 15, improving work efficiency and comfort, facilitating daily maintenance and operation, reducing the physical consumption of the staff, and promoting the overall efficiency and safety of the workplace.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A propylene product storage and transportation system, including a PDH unit (1), wherein the PDH unit (1) is arranged at the rear side of a PP unit (2), and is characterized in that, A connecting pipe (3) is fixedly connected between the PP device (2) and the PDH device (1). There are several propylene spherical tanks (4) on the right side of the PDH device (1). A main conveying pipe (5) is fixedly connected to the right side of the PDH device (1). There are conveying branch pipes (6) fixedly connected between each of the several propylene spherical tanks (4) and the main conveying pipe (5). A first conveying pump (7) is respectively arranged inside each of the several conveying branch pipes (6). An installation pipe (8) is fixedly connected between the PP device (2) and the main conveying pipe (5). A second conveying pump (9) is arranged inside the installation pipe (8). There are several loading arms (10) on the front side of the main conveying pipe (5).

2. The propylene product storage and transportation system according to claim 1, characterized in that: A supporting main pipe (11) is arranged on the rear side of the main conveying pipe (5). There are supporting branch pipes (12) fixedly connected between each of the several propylene spherical tanks (4) and the supporting main pipe (11). A third conveying pump (13) is respectively arranged inside each of the several supporting branch pipes (12).

3. The propylene product storage and transportation system according to claim 2, wherein: Several supporting columns (14) are respectively fixed on the outer sides of the several propylene spherical tanks (4).

4. The propylene product storage and transportation system according to claim 1, characterized in that: Workbenches (15) are respectively fixed between two adjacent ones of the several propylene spherical tanks (4).

5. The propylene product storage and transportation system according to claim 4, wherein: Guardrails (16) are respectively fixed on the top surfaces of the several workbenches (15).

6. The propylene product storage and transportation system according to claim 5, characterized in that: Ladders (17) are respectively fixed on the front sides of the several workbenches (15).

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