Methanol storage tank device

Abstract

The utility model discloses a methanol storage tank device which comprises a methanol tank body, a feeding pipe communicated with the top of the tank body, a discharging pipe communicated with the bottom of the tank body, a conveying pipeline communicated with the feeding pipe, a backflow circulating mechanism and a cooling mechanism, the backflow circulation mechanism comprises a first pipeline, a second pipeline and a third pipeline which are arranged between the feeding pipe and the discharging pipe in parallel, one end of the discharging pipe is arranged at the bottom of the tank body, the other end of the discharging pipe is communicated with the feeding pipe, conveying pumps are arranged on the second pipeline and the third pipeline, and a first valve is arranged on the discharging pipe and located between the first pipeline and the second pipeline. A raw material pipe is arranged on the discharging pipe and located between the first pipeline and the first valve, a second valve is arranged on the feeding pipe and located between the first pipeline and the second pipeline, and a third valve is arranged on the discharging pipe and located between the tank body and the first pipeline. When the device conveys methanol to the rear end, redundant methanol pumped by the conveying pump circularly flows in the pipeline and is supplemented through the discharging pipe.

Description

Technical Field

[0001] This utility model relates to a storage tank device, and more particularly to a methanol storage tank device. Background Technology

[0002] Methanol is a basic organic chemical raw material and a high-quality fuel. With economic development and increasing environmental awareness, methanol fuel is widely used as a clean energy source. In industrial production, methanol is mainly used in fine chemicals, plastics, and other fields to manufacture various organic products such as methanol, acetic acid, chloromethane, methylamine, and dimethyl sulfate. It is also an important raw material for pesticides and pharmaceuticals.

[0003] Methanol needs to be injected into tanks during storage, transportation, and use. To prevent methanol from evaporating, the injection port is not large. However, to speed up the injection process, a separate opening is needed at the top of the tank to maintain the internal pressure of the tank consistent with the external pressure. But since methanol is a volatile substance and easily evaporates even at room temperature, the top opening during injection will cause methanol gas to overflow. This will have two effects: first, methanol is toxic; second, direct emissions will cause environmental pollution; and third, a large accumulation of methanol gas may pose a safety hazard such as fire and explosion.

[0004] However, current methanol storage tanks on the market use pumps to pump methanol to the downstream end of the pipeline. But because the pumps cannot accurately pump the methanol, the pumped volume is too large, resulting in excess methanol remaining in the pipeline or excessive methanol being transported to the downstream end. At the same time, existing methanol storage tanks are prone to evaporation from the tank body, and methanol is flammable, so the methanol storage tanks should not be too tall. To achieve the above objectives, existing methanol storage tanks have complex structures, occupy a large amount of space, are not conducive to storage and transportation, and are not suitable for use in small storage tanks due to their cost. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art by providing a methanol storage tank device to solve the problem of excess methanol reflux during methanol transportation.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a methanol storage tank device, comprising a methanol tank body, an inlet pipe connected to the top of the tank body, an outlet pipe connected to the bottom of the tank body, and a conveying pipe connected to the inlet pipe, further comprising a reflux circulation mechanism and a cooling mechanism. The reflux circulation mechanism includes a first pipe, a second pipe, and a third pipe arranged in parallel between the inlet pipe and the outlet pipe. One end of the outlet pipe is located at the bottom of the tank body, and the other end is connected to the inlet pipe. A conveying pump is provided on the second pipe and the third pipe. The conveying pipe is located on the inlet pipe between the second pipe and the third pipe. A first valve is provided on the outlet pipe between the first pipe and the second pipe. A raw material pipe is provided on the outlet pipe between the first pipe and the first valve. A second valve is provided on the inlet pipe between the first pipe and the second pipe. A third valve is provided on the outlet pipe between the tank body and the first pipe.

[0007] Furthermore, the cooling mechanism includes a spraying mechanism disposed above the tank body, the spraying mechanism including a cooling water pipe and a spray head disposed above the tank body and connected to the cooling water pipe.

[0008] Furthermore, the cooling water pipe is equipped with a flushing pipe that communicates with the tank body.

[0009] Furthermore, a breather valve is provided on the top of the tank.

[0010] Furthermore, the top of the tank is provided with a nitrogen filling mechanism, which includes an inflation pipe connected to the top of the tank and connected to nitrogen gas.

[0011] Furthermore, the tank is equipped with a first liquid level sensor located at the top and a second liquid level sensor located at the bottom.

[0012] Furthermore, a temperature sensor is installed on the tank.

[0013] Furthermore, the device includes a central control mechanism that controls the stopping of the delivery pump, a first liquid level sensor, a second liquid level sensor, and a temperature sensor.

[0014] The beneficial effects of the above structure of this utility model are as follows: The methanol storage tank device provided by this utility model can circulate the excess methanol pumped during the transportation of methanol in the pipeline, and replenish the methanol in the pipeline through the discharge pipe to achieve circulation backflow. At the same time, the top nitrogen filling can prevent methanol volatilization, and the breather valve can release the pressure in the tank. The cooling mechanism can physically cool the outside of the tank. Attached Figure Description

[0015] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a methanol storage tank device according to the present invention.

[0017] The components are: 1. Tank; 2. Conveying pipeline; 3. Feed pipe; 4. Discharge pipe; 5. First pipeline; 6. Second pipeline; 7. Third pipeline; 8. Conveying pump; 9. First valve; 10. Second valve; 11. Cooling water pipe; 12. Spray head; 13. Flushing pipe; 14. Breathing valve; 15. Air filling pipeline; 16. Raw material pipe; 17. Third valve. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] In response to the needs of methanol storage tanks, the designer of this utility model has innovatively proposed a methanol storage tank device that allows excess methanol pumped by the delivery pump to circulate in the pipeline during the downstream process, and replenishes the methanol through the discharge pipe.

[0020] like Figure 1 As shown, a methanol storage tank device includes a methanol tank body 1, an inlet pipe 3 connected to the top of the tank body 1, an outlet pipe 4 connected to the bottom of the tank body 1, and a conveying pipe 2 connected to the inlet pipe 3. It also includes a reflux circulation mechanism and a cooling mechanism. The reflux circulation mechanism includes a first pipe 5, a second pipe 6, and a third pipe 7 arranged in parallel between the inlet pipe 3 and the outlet pipe 4. One end of the outlet pipe 4 is located at the bottom of the tank body 1, and the other end is connected to the inlet pipe 3. A conveying pump 8 is installed on the second pipe 6 and the third pipe 7. The conveying pipe 2 is located on the inlet pipe 3 between the second pipe 6 and the third pipe 7. A first valve 9 is installed on the outlet pipe 4 between the first pipe 5 and the second pipe 6. A raw material pipe 16 is installed on the outlet pipe 4 between the first pipe 5 and the first valve 9. A second valve 10 is installed on the inlet pipe 3 between the first pipe 5 and the second pipe 6. A third valve 17 is installed on the outlet pipe 4 between the tank body 1 and the first pipe 5.

[0021] The cooling mechanism includes a spraying mechanism installed above the tank 1. The spraying mechanism includes a cooling water pipe 11 and a spray head 12 installed above the tank 1 and connected to the cooling water pipe 11, which sprays water to cool the tank 1.

[0022] The cooling water pipe 11 is equipped with a flushing pipe 13 that communicates with the tank 1 to clean the inside of the tank 1.

[0023] The top of the tank 1 is equipped with a breather valve 14. The mechanical breather valve 14 is set to open when the pressure inside the tank 1 reaches a set value to release the pressure inside the tank 1.

[0024] The top of the tank 1 is equipped with a nitrogen filling mechanism, which includes a gas filling pipe 15 connected to the top of the tank 1. The gas filling pipe 15 is connected to nitrogen gas. Filling the top of the tank 1 with nitrogen can prevent methanol from evaporating.

[0025] The tank 1 is equipped with a first liquid level sensor located at the top and a second liquid level sensor located at the bottom.

[0026] A temperature sensor is installed on the tank body 1.

[0027] The device includes a central control mechanism that controls the stopping of the transfer pump 8, the first liquid level sensor, the second liquid level sensor, and the temperature sensor. It can remotely control the device, display the liquid level and temperature in the tank 1 in real time, and the transfer pump 8 can only be stopped remotely, not started remotely, to prevent the valve from malfunctioning after remote starting.

[0028] When filling tank 1, the first valve 9 and the second valve 10 are opened, the third valve 17 is closed, and the conveying pump 8 is started. Methanol enters the feed pipe 3 through the feed pipe 16 via the conveying pump 8, and then enters the tank 1 through the feed pipe 3. The capacity of methanol in the tank 1 is monitored by the first liquid level sensor and the second liquid level sensor. When the tank 1 is conveying to the downstream, the first valve 9, the second valve 10 and the third valve 17 are opened, and the conveying pump 8 is started. Methanol enters the feed pipe 3 through the discharge pipe 4 via the conveying pump 8 from the tank 1, and then enters the conveying pipeline 2 through the feed pipe 3 to be conveyed to the downstream process. At the same time, excess methanol in the feed pipe 3 flows back to the discharge pipe 4 through the first pipeline 5, and is replenished and circulated through the methanol in the discharge pipe 4.

[0029] The beneficial effects of the above structure of this utility model are as follows: The methanol storage tank device provided by this utility model can circulate the excess methanol pumped during the transportation of methanol in the pipeline, and replenish the methanol in the pipeline through the discharge pipe to achieve circulation backflow. At the same time, the top nitrogen filling can prevent methanol volatilization, and the breather valve can release the pressure in the tank. The cooling mechanism can physically cool the outside of the tank.

[0030] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A methanol storage tank device, comprising a methanol tank body, an inlet pipe communicating with the top of the tank body, an outlet pipe communicating with the bottom of the tank body, and a conveying pipe communicating with the inlet pipe, characterized in that, It also includes a reflux circulation mechanism and a cooling mechanism. The reflux circulation mechanism includes a first pipe, a second pipe, and a third pipe arranged in parallel between the feed pipe and the discharge pipe. One end of the discharge pipe is located at the bottom of the tank, and the other end is connected to the feed pipe. The second pipe and the third pipe are equipped with conveying pumps. The conveying pipe is located on the feed pipe between the second pipe and the third pipe. The discharge pipe is equipped with a first valve located between the first pipe and the second pipe. The discharge pipe is equipped with a raw material pipe located between the first pipe and the first valve. The feed pipe is equipped with a second valve located between the first pipe and the second pipe. The discharge pipe is equipped with a third valve located between the tank and the first pipe.

2. The methanol storage tank device as described in claim 1, characterized in that: The cooling mechanism includes a spraying mechanism installed above the tank, which includes a cooling water pipe and a spray head installed above the tank and connected to the cooling water pipe.

3. The methanol storage tank device as described in claim 2, characterized in that: The cooling water pipe is equipped with a flushing pipe that communicates with the tank body.

4. The methanol storage tank device as described in claim 1, characterized in that: The tank is equipped with a breather valve at the top.

5. The methanol storage tank device as described in claim 1, characterized in that: The top of the tank is equipped with a nitrogen filling mechanism, which includes a gas filling pipe connected to the top of the tank and connected to nitrogen gas.

6. The methanol storage tank device as described in claim 1, characterized in that: The tank is equipped with a first liquid level sensor located at the top and a second liquid level sensor located at the bottom.

7. The methanol storage tank device as described in claim 6, characterized in that: The tank is equipped with a temperature sensor.

8. The methanol storage tank device as described in claim 7, characterized in that: The device includes a central control mechanism that controls the stopping of the delivery pump, a first liquid level sensor, a second liquid level sensor, and a temperature sensor.

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