Methanol conveying system

By adding a reverse tank pipeline and a first control valve in the methanol delivery system, the refined methanol is directly transported to the finished tank, which solves the problems of high power consumption and maintenance costs in the existing system, and achieves a more efficient transportation process.

CN222849060UActive Publication Date: 2025-05-09INNER MONGOLIA RONGXIN CHEM CO LTD
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Patent Information

Application Number
CN202421999931.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-16
Publication Date
2025-05-09
Estimated Expiration
2034-08-16

AI Technical Summary

Technical Problem

In the existing methanol delivery system, refined methanol requires two pump pressure boosts during the delivery process, resulting in increased power consumption and high maintenance costs.

Method used

By adding a reverse tank pipeline and a first control valve, the refined methanol is directly transported to the refined methanol finished product tank for storage, avoiding secondary pressure lift.

Benefits of technology

Reduces the number of pressure lifting times, saves power consumption, reduces maintenance costs, and improves the efficiency of the conveying system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222849060U_ABST
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Abstract

The utility model belongs to the technical field of methanol rectification, and relates to a methanol conveying system which comprises a methanol rectifying tower, a refined methanol metering pump, a first control valve, a tank reversing pipeline and a refined methanol finished product tank which are communicated in sequence, the methanol conveying system further comprises a second control valve, a refined methanol intermediate tank and a refined methanol filling pump which are communicated in sequence; the second control valve is communicated with the first control valve, and the refined methanol filling pump is communicated with the refined methanol finished product tank; one end of the tank reversing pipeline is respectively communicated with the first control valve and the second control valve; and the other end of the tank reversing pipeline is respectively communicated with a refined methanol filling pump and a refined methanol finished product tank. According to the utility model, the refined methanol is directly conveyed to the pipeline at the outlet of the refined methanol filling pump and then is directly conveyed to the refined methanol finished product tank for storage, so that secondary pressure rise is avoided, the power consumption is saved, and the maintenance cost is reduced.
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Description

Technical Field

[0001] The utility model belongs to the technical field of methanol distillation and relates to a methanol conveying system. Background Art

[0002] Methanol, as a special organic substance, has important uses in daily life and production. For example, methanol can be used as a new type of organic fuel. Methanol can also be used in plastics, fine chemicals, and the automotive industry. In methanol production, since crude methanol contains a lot of impurities, in order to reduce the impurity content in methanol and improve the quality of methanol, methanol is generally distilled using a distillation device, and then the refined methanol collected from the distillation device is transported to the finished product tank for storage and sale.

[0003] At present, refined methanol is transported to the finished product tank by using a filling pump to increase the pressure. However, in actual production, a methanol distillation system involves many distillation equipment, so it is divided into multiple methanol distillation areas. As a result, during transportation, the refined methanol produced in each methanol distillation area is first pumped to increase the pressure and then transported to the intermediate tank area for temporary storage. Then, the refined methanol in each area is pumped from the intermediate tank area to the final finished product tank. This transportation process is pressurized twice by the pump, which not only increases power consumption, but also during the second transportation, the pump used in the previous transportation must be started to increase the pressure, increasing equipment consumption and maintenance costs. Utility Model Content

[0004] Aiming at the technical problems of increased power consumption and high maintenance cost in the existing methanol transportation, the utility model provides a methanol transportation system.

[0005] In the utility model, by adding a tank dumping pipeline and a first control valve, refined methanol is directly transported to the refined methanol finished product tank for storage, thereby avoiding secondary pressure increase, saving power consumption, and reducing maintenance costs.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A methanol delivery system comprises a methanol distillation tower, a refined methanol metering pump, a first control valve, a tank pouring pipeline and a refined methanol finished product tank which are connected in sequence;

[0008] Refined methanol metering pump: used to pressurize the refined methanol flowing out of the methanol distillation tower;

[0009] Tank transfer pipeline: used to directly transport pressurized refined methanol to the refined methanol finished product tank for storage;

[0010] The first control valve: used to control the conduction of the tank pouring pipeline.

[0011] The methanol delivery system also includes a second control valve, a refined methanol intermediate tank and a refined methanol filling pump which are connected in sequence; the second control valve is connected to the first control valve, and the refined methanol filling pump is connected to the refined methanol finished product tank; one end of the tank pouring pipeline is respectively connected to the first control valve and the second control valve; the other end of the tank pouring pipeline is respectively connected to the refined methanol filling pump and the refined methanol finished product tank.

[0012] It is further defined that a fourth control valve is provided between the refined methanol filling pump and the refined methanol finished product tank; the other end of the tank pouring pipeline is respectively connected to the fourth control valve and the refined methanol finished product tank.

[0013] It is further defined that a solenoid valve is arranged between the fourth control valve and the refined methanol finished product tank; the other end of the tank pouring pipeline is respectively connected to the fourth control valve and the solenoid valve.

[0014] It is further defined that a third control valve is provided on the tank pouring pipeline.

[0015] It is further defined that the methanol delivery system also includes a refined methanol metering tank arranged between the methanol distillation tower and the refined methanol metering pump.

[0016] It is further defined that the methanol delivery system also includes a methanol analyzer disposed on the refined methanol metering tank.

[0017] It is further defined that the methanol delivery system also includes a crude methanol tank connected to the methanol distillation tower; the crude methanol tank is also connected to a refined methanol metering tank.

[0018] It is further defined that a fifth control valve is provided between the crude methanol tank and the refined methanol metering tank.

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model adds a tank dumping pipeline and a first control valve, so that refined methanol is directly transported to the refined methanol finished product tank for storage, which reduces the number of pressure increases in existing refined methanol transportation, avoids secondary pressure increases, saves electricity consumption, and reduces maintenance costs.

[0021] 2. The utility model sets a refined methanol metering pump to increase the pressure once when the refined methanol is directly transported to the refined methanol finished product tank, thereby ensuring the normal operation of the transportation, saving electricity consumption, reducing the operating frequency of the operating equipment, and reducing equipment loss and maintenance costs.

[0022] 3. The utility model arranges a third control valve on the tank pouring pipeline to control the opening and closing of the tank pouring pipeline, which is easy to operate.

[0023] 4. In the utility model, a refined methanol metering tank is provided between the methanol distillation tower and the refined methanol metering pump to buffer and meter the refined methanol product output from the methanol distillation tower, thereby preventing excessive refined methanol product from directly entering the subsequent system and causing an increase in the pressure of the conveying system, thereby ensuring stable operation of the conveying work.

[0024] 5. The utility model arranges a methanol analyzer on the refined methanol metering tank, arranges a crude methanol tank connected to the refined methanol metering tank, and arranges a fifth control valve between the crude methanol tank and the refined methanol metering tank. The purity of the refined methanol in the refined methanol metering tank is detected by analysis. When the purity of the refined methanol does not meet the product requirements, the unqualified refined methanol is controlled by the fifth control valve to return to the crude methanol tank and enter the methanol distillation tower for re-distillation. On the contrary, when the purity of the refined methanol meets the product requirements, the fifth control valve is closed, and the qualified refined methanol is transported to the refined methanol finished product tank, thereby improving the quality of the refined methanol product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of a methanol delivery system provided in Example 1;

[0026] Figure 2 A schematic diagram of a methanol delivery system provided in Example 2;

[0027] in:

[0028] 1-refined methanol metering tank; 2-refined methanol metering pump; 3-first control valve; 4-second control valve; 5-third control valve; 6-refined methanol intermediate tank; 7-refined methanol filling pump; 8-fourth control valve; 9-solenoid valve; 10-crude methanol tank; 11-methanol distillation tower; 12-methanol analyzer; 13-fifth control valve; 14-refined methanol finished product tank; 15-tank pouring pipeline. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0030] Example 1

[0031] See also Figure 1 A methanol delivery system includes a methanol distillation tower 11, a refined methanol metering pump 2, a first control valve 3, a tank pouring pipeline 15 and a refined methanol finished product tank 14 which are connected in sequence.

[0032] In this embodiment, the refined methanol metering pump 2 is used to pressurize the refined methanol flowing out of the methanol distillation tower 11; the tank pouring pipeline 15 is used to directly transport the pressurized refined methanol to the refined methanol finished product tank 14 for storage; the first control valve 3 is used to control the conductance of the tank pouring pipeline 15.

[0033] In this embodiment, the methanol distillation tower 11 is used to distill crude methanol to obtain refined methanol products. The refined methanol finished product tank 14 is used to store refined methanol products, and the tank inversion pipeline 15 is used to directly transport the refined methanol produced by the methanol distillation tower 11 to the refined methanol finished product tank 14. During transportation, the refined methanol metering pump 2 is used to control the flow rate of the transported refined methanol, and the pressure is increased at the same time, so that the pressure meets the pressure requirements of the subsequent transportation system; the residual pressure of the refined methanol metering pump 2 is sufficient to meet the resistance of the extended process, and meets the normal transportation of refined methanol.

[0034] In this embodiment, the first control valve 3 is opened, and the refined methanol produced by the methanol distillation tower 11 is directly transported to the tank pouring pipeline 15 through the refined methanol metering pump 2, and then further transported to the refined methanol finished product tank 14 for storage. There is no need to transport it to the refined methanol intermediate tank 6 and increase the pressure through the refined methanol filling pump 7, which reduces the number of pressure increases, saves electricity consumption, and reduces maintenance costs.

[0035] In this embodiment, the methanol transportation system also includes a second control valve 4, a refined methanol intermediate tank 6 and a refined methanol filling pump 7 which are connected in sequence; the second control valve 4 is connected to the first control valve 3, and the refined methanol filling pump 7 is connected to the refined methanol finished product tank 14; one end of the tank pouring pipeline 15 is respectively connected to the first control valve 3 and the second control valve 4; the other end of the tank pouring pipeline 15 is respectively connected to the refined methanol filling pump 7 and the refined methanol finished product tank 14.

[0036] The refined methanol intermediate tank 6 is used for temporary storage of refined methanol products; the purpose of providing the refined methanol intermediate tank 6 and the refined methanol filling pump 7 is to avoid failure of the tank dumping pipeline 15 resulting in cessation of the transportation work.

[0037] In this embodiment, when a failure occurs in the tank dumping pipeline 15 and it is necessary to use the refined methanol intermediate tank 6 and the refined methanol filling pump 7 for transportation, the first control valve 3 is closed and the second control valve 4 is opened, and the refined methanol produced by the methanol distillation tower 11 is directly transported to the refined methanol intermediate tank 6, where it is pressurized by the refined methanol filling pump 7 and then transported to the refined methanol finished product tank 14 for storage. This route serves as a backup to ensure the normal operation of the entire transportation system.

[0038] In this embodiment, the tank pouring pipeline 15 is provided with a third control valve 5, and the opening and closing of the tank pouring pipeline is controlled by the third control valve 5, which is easy to operate. When the tank pouring pipeline 15 is in the delivery operation, the third control valve 5 is normally open. When the tank pouring pipeline 15 fails, the third control valve 5 is closed when the refined methanol intermediate tank 6 and the refined methanol filling pump 7 are used for delivery.

[0039] In this embodiment, a fourth control valve 8 is provided between the refined methanol filling pump 7 and the refined methanol finished product tank 14; the other end of the tank emptying pipeline 15 is connected to the fourth control valve 8 and the refined methanol finished product tank 14 respectively.

[0040] In this embodiment, a solenoid valve 9 is arranged between the fourth control valve 8 and the refined methanol product tank 14, and the other end of the tank emptying pipeline 15 is connected to the fourth control valve 8 and the solenoid valve 9 respectively.

[0041] In this embodiment, the outlet pipeline of the refined methanol filling pump 7 is cut off or connected by the fourth control valve 8, and the inlet pipeline of the refined methanol finished product tank 14 is cut off or connected by the solenoid valve 9; when in use, when the tank transfer pipeline 15 is carrying out transportation work, the fourth control valve 8 is closed and the solenoid valve 9 is normally open; on the contrary, when the tank transfer pipeline 15 fails and the refined methanol intermediate tank 6 and the refined methanol filling pump 7 are used for transportation, the fourth control valve is opened and the solenoid valve 9 is opened.

[0042] In this embodiment, the methanol delivery system further includes a refined methanol metering tank 1 disposed between the methanol distillation tower 11 and the refined methanol metering pump 2 .

[0043] The refined methanol metering tank 1 is mainly used for temporary storage of refined methanol extracted from the methanol distillation tower 11, playing a buffering role, preventing excessive refined methanol products from directly entering the subsequent system and causing an increase in the pressure of the transportation system, and ensuring stable operation of the transportation work. Therefore, during implementation, when the liquid level in the refined methanol metering tank 1 rises to 70%, the refined methanol metering pump 2 is started to transport the refined methanol.

[0044] Example 2

[0045] See also Figure 2 On the basis of Example 1, the methanol delivery system provided in this embodiment further includes a methanol analyzer 12 arranged on the refined methanol metering tank 1 .

[0046] In this embodiment, the methanol analyzer 12 is used to determine whether the refined methanol entering the refined methanol metering tank 1 is qualified. When the refined methanol quality is qualified and when the liquid level in the refined methanol metering tank 1 rises to 70%, the refined methanol metering pump 2 is started, and at the same time, the delivery pipeline of the tank pouring pipeline 15 is connected to directly deliver the refined methanol to the refined methanol finished product tank 14 to complete the refined methanol delivery work.

[0047] In this embodiment, the methanol delivery system further includes a crude methanol tank 10 connected to a methanol distillation tower 11; the crude methanol tank 10 is also connected to a refined methanol metering tank 1. When the quality of refined methanol is found to be unqualified after detection by the methanol analyzer 12, the subsequent methanol delivery pipeline is closed, and the unqualified methanol is refluxed into the crude methanol tank 10 to mix with the crude methanol, and then re-enters the methanol distillation tower 11 for distillation to improve the quality of refined methanol.

[0048] Preferably, in order to control the reflux of unqualified refined methanol to the crude methanol tank 10, a fifth control valve 13 is arranged between the crude methanol tank 10 and the refined methanol metering tank 1. When the quality of refined methanol is unqualified, the subsequent methanol delivery pipeline is closed, and the fifth control valve 13 is opened to control the unqualified refined methanol to return to the crude methanol tank 10 and enter the methanol distillation tower 11 for re-distillation; conversely, when the quality of refined methanol is qualified, the fifth control valve 13 is closed, the delivery pipeline of the tank pouring pipeline 15 is connected, and the qualified refined methanol is delivered to the refined methanol finished product tank, thereby improving the quality of the refined methanol product.

[0049] In summary, the methanol delivery pipeline provided by the utility model delivers the refined methanol product after distillation directly to the refined methanol finished product tank 14, thereby reducing the filling and pressure raising process, reducing the delivery cost, and reducing the equipment maintenance cost.

[0050] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A methanol delivery system, characterized in that: It comprises a methanol distillation tower (11), a refined methanol metering pump (2), a first control valve (3), a tank pouring pipeline (15) and a refined methanol finished product tank (14) which are connected in sequence; Refined methanol metering pump (2): used for primary pressurization of refined methanol flowing out of the methanol distillation tower (11); Tank transfer pipeline (15): used to directly transfer pressurized refined methanol to the refined methanol finished product tank (14) for storage; The first control valve (3) is used to control the conduction of the tank dumping pipeline (15).

2. The methanol delivery system according to claim 1, characterized in that: The methanol delivery system further comprises a second control valve (4), a refined methanol intermediate tank (6) and a refined methanol filling pump (7) which are connected in sequence; the second control valve (4) is connected to the first control valve (3), and the refined methanol filling pump (7) is connected to the refined methanol finished product tank (14); one end of the tank pouring pipeline (15) is respectively connected to the first control valve (3) and the second control valve (4); the other end of the tank pouring pipeline (15) is respectively connected to the refined methanol filling pump (7) and the refined methanol finished product tank (14).

3. The methanol delivery system according to claim 2, characterized in that: A fourth control valve (8) is arranged between the refined methanol filling pump (7) and the refined methanol finished product tank (14); the other end of the tank emptying pipeline (15) is respectively connected to the fourth control valve (8) and the refined methanol finished product tank (14).

4. The methanol delivery system according to claim 3, characterized in that: A solenoid valve (9) is arranged between the fourth control valve (8) and the refined methanol product tank (14); the other end of the tank dumping pipeline (15) is respectively connected to the fourth control valve (8) and the solenoid valve (9).

5. The methanol delivery system according to claim 4, characterized in that: The tank dumping pipeline (15) is provided with a third control valve (5).

6. The methanol delivery system according to any one of claims 1 to 5, characterized in that: The methanol delivery system further comprises a refined methanol metering tank (1) arranged between the methanol distillation tower (11) and the refined methanol metering pump (2).

7. The methanol delivery system according to claim 6, characterized in that: The methanol delivery system further comprises a methanol analyzer (12) arranged on the refined methanol metering tank (1).

8. The methanol delivery system according to claim 7, characterized in that: The methanol delivery system further comprises a crude methanol tank (10) connected to the methanol distillation tower (11); the crude methanol tank (10) is also connected to the refined methanol metering tank (1).

9. The methanol delivery system according to claim 8, characterized in that: A fifth control valve (13) is provided between the crude methanol tank (10) and the refined methanol metering tank (1).