A neopentyl glycol solution delivery system

Abstract

This utility model discloses a new pentylene glycol solution conveying system, relating to the field of alcohol solution conveying technology. The utility model includes a material storage tank, a storage pipeline installed on one side of the bottom of the storage tank, a conveying pump installed at one end of the storage pipeline, a pressure gauge installed at the output end of the conveying pump, a circulation pipeline installed on one side of the conveying pump, a second safety valve relief pipeline installed on the circulation pipeline, a conveying pipeline installed on one side of the circulation pipeline, and a first safety valve relief pipeline installed on the same side of the circulation pipeline. The ends of the circulation pipeline and the conveying pipeline are connected to a relief storage tank. This utility model, by setting up a circulation pipeline and a conveying pipeline for the material storage tank, and correspondingly installing two pressure relief pipelines, enables the system to conveniently reduce pressure during solution conveying and storage. Furthermore, by setting up a relief storage tank with a rupture disc, the device possesses emergency pressure relief capability for sudden high pressure events.

Description

Technical Field

[0001] This utility model belongs to the field of alcohol solution transportation technology, specifically relating to a neopentyl glycol solution transportation system. Background Technology

[0002] Neopentyl glycol, a commonly used raw material in the polyester polyol industry, has two common storage and usage methods: solid packaging and storage in tanks as an aqueous solution with a certain amount of water. In the latter method, excessive pressure may occur in the storage tanks and pipelines due to factors such as high temperature exposure, steam heating, transport friction, and operational errors, affecting the storage and transport of the solution. In the existing technology, the solution is filtered by using a filter and pressure gauges and valves are installed at the pipeline. A portion of the solution is discharged periodically or when the pressure is too high, based on the pressure gauge reading. The drawback of this technical solution is that it requires frequent periodic pressure relief operations, and if the pressure is not relieved in time, it will cause the pipeline to become pressurized and leak, that is, it does not have the ability to relieve pressure in emergencies.

[0003] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0004] The purpose of this invention is to provide a neopentyl glycol solution delivery system, and the technical problem to be solved is as follows: the existing neopentyl glycol solution delivery system has the problem of frequent pressure relief and lack of emergency pressure relief capability.

[0005] The objective of this utility model can be achieved through the following technical solutions: A novel pentylene glycol solution delivery system includes a material storage tank. A storage pipeline is installed on one side of the bottom of the material storage tank. A delivery pump is installed at one end of the storage pipeline. A pressure gauge is installed at the output end of the delivery pump. A circulation pipeline is installed on one side of the delivery pump. A second safety valve relief pipeline is installed on the circulation pipeline. A delivery pipeline is installed on one side of the circulation pipeline. A first safety valve relief pipeline is installed on the other side of the circulation pipeline. The ends of the circulation pipeline and the delivery pipeline are connected to a relief storage tank. The first safety valve relief pipeline works in conjunction with the second safety valve relief pipeline to release pressure in the pipeline. The relief storage tank is used to store a portion of the overpressured solution.

[0006] As a further embodiment of this utility model: a filter is installed on one side of the circulation pipeline, and the filter is connected to a pipeline manifold.

[0007] As a further embodiment of this utility model: a pipeline steam tracing and a steam condensate pipeline are installed on one side of the delivery pump.

[0008] As a further embodiment of this utility model: the safety valve discharge line is connected in series between the circulation line and the delivery line.

[0009] As a further embodiment of this utility model: a venting pipeline is connected in series between the circulation pipeline and the delivery pipeline, a rupture disc is installed on one side of the venting pipeline, and the venting storage tank is installed on the pressure relief side of the rupture disc.

[0010] As a further embodiment of this utility model, control valves are installed at the circulation pipeline, the delivery pipeline and the discharge pipeline.

[0011] The beneficial effects of this utility model are: 1. By installing a transfer pump on one side of the material storage tank, and installing a circulation pipeline and a transfer pipeline at the output end of the transfer pump, and installing a pressure gauge at the transfer pump, a second safety valve relief pipeline is installed in the circulation pipeline, and a first safety valve relief pipeline is installed between the circulation pipeline and the transfer pipeline. During use, the opening and closing of the first and second safety valves can be controlled according to the pressure gauge value based on the state of the stored or transported solution. The purpose is to regulate the pressure during the storage and transport of the solution and avoid the periodic pressure relief operation in the existing technology. 2. By installing a relief tank with rupture discs between the circulation pipeline and the delivery pipeline, when the system exceeds the pressure resistance limits of the circulation pipeline and the delivery pipeline, the overpressure solution can be promptly delivered to the relief tank by automatically rupturing the rupture discs. This enables the system to have the emergency pressure relief capability for sudden high pressure, thereby improving the pressure stability of the system during use by raising the upper limit of pipeline pressure resistance. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] In the diagram: 1. Material storage tank; 2. Storage pipeline; 3. Transfer pump; 4. Steam tracing pipeline; 5. Steam condensate pipeline; 6. Filter; 7. Relief tank; 8. Circulation pipeline; 9. Safety valve relief pipeline one; 10. Transfer pipeline; 11. Pressure gauge; 12. Rupture disc; 13. Safety valve relief pipeline two. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0016] like Figure 1 As shown, a new pentylene glycol solution conveying system includes a material storage tank 1, a storage pipeline 2 installed on one side of the bottom of the material storage tank 1, a conveying pump 3 installed at one end of the storage pipeline 2, a pressure gauge 11 installed at the output end of the conveying pump 3, a circulation pipeline 8 installed on one side of the conveying pump 3, a safety valve relief pipeline 13 installed on the circulation pipeline 8, a conveying pipeline 10 installed on one side of the circulation pipeline 8, and a safety valve relief pipeline 9 installed on one side of the circulation pipeline 8. The ends of the circulation pipeline 8 and the conveying pipeline 10 are connected to a relief storage tank 7. The safety valve relief pipeline 9 is used in conjunction with the safety valve relief pipeline 13 to relieve pressure in the pipeline. The relief storage tank 7 is used to store a portion of the overpressured solution. It should be noted that control valves are installed at the circulation pipeline 8, the delivery pipeline 10, and the discharge pipeline leading to the discharge storage tank 7 to regulate the flow of the neopentyl glycol solution (hereinafter referred to as the solution). In addition, the circulation pipeline 8 prevents the solution pressure from accumulating at the delivery pump 3 by circulating the solution, thus protecting the delivery pump 3.

[0017] A filter 6 is installed on one side of the circulation pipeline 8, and the filter 6 is connected to the pipeline manifold. This delivery system has two basic functions: storing and transporting solutions. The circulation pipeline 8 is used to store the solution. During the storage process, the solution will circulate thermally along the circulation pipeline 8. Since the melting point of the solution is 130 degrees Celsius, if the circulation temperature is lower than this temperature, liquid neopentyl glycol will crystallize and precipitate. By setting the filter 6 in the circulation pipeline 8, the crystals can be quickly intercepted to prevent the crystals from expanding with the circulation.

[0018] A pipeline steam tracing 4 and a steam condensate pipeline 5 are installed on one side of the delivery pump 3. The pipeline steam tracing 4 uses the heat of steam to compensate for the temperature drop of the solution in the delivery pipeline due to heat loss during the transportation process, and is used to maintain the solution temperature above the melting point. The steam condensate pipeline 5 is used to collect and transport the condensate generated by the condensation of steam during the heat exchange process, so as to recycle and reuse the condensate, thereby improving the energy utilization efficiency of the system.

[0019] Safety valve relief line 9 is connected in series between circulation line 8 and delivery line 10. It should be noted that when the system needs to deliver solution, the control valve at safety valve relief line 9 can be opened to transfer the solution to delivery line 10. By connecting the pipe at safety valve relief line 9, a portion of the solution can be discharged via the built-in safety valve during delivery, thus achieving a pressure reduction effect. The pressure relief here mainly originates from pressure exceeding limits caused by high temperature exposure, steam heating, and delivery friction in the delivery pipeline. Furthermore, the opening of safety valve relief line 13 installed at circulation line 8 is used to address overpressure issues caused by high temperature or incorrect valve opening / closing sequence at delivery pump 3. In other words, by using safety valve relief lines 9 and 13, the system maintains comprehensive pressure relief capability during solution circulation and delivery.

[0020] A venting pipeline is connected in series between the circulation pipeline 8 and the delivery pipeline 10. A rupture disc 12 is installed on one side of the venting pipeline, and the venting storage tank 7 is installed on the pressure relief side of the rupture disc 12. It should be noted that the rupture disc 12 is a disposable safety pressure relief disc made of metal or composite materials. It is pre-designed to withstand pressure and will rupture instantly under the set burst pressure. That is, when the system is circulating and storing the solution, the solution pressure cannot be released by the safety valve relief line 9, or when the system is transporting the solution, the pressure relief capacity of the solution is still insufficient by the combined pressure relief of the safety valve relief line 9 and the safety valve relief line 13. At this time, the high pressure of the solution through the relief line will rupture the rupture disc 12, and transport part of the solution into the relief storage tank 7. This gives the system the emergency pressure relief capability for sudden high pressure, thereby improving the pressure stability of the system during use.

[0021] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A new pentylene glycol solution conveying system, comprising a material storage tank (1), characterized in that, The material storage tank (1) is equipped with a storage pipeline (2) on one side of its bottom. A conveying pump (3) is installed at one end of the storage pipeline (2). A pressure gauge (11) is installed at the output end of the conveying pump (3). A circulation pipeline (8) is installed on one side of the conveying pump (3). A second safety valve relief pipeline (13) is installed on the circulation pipeline (8). A conveying pipeline (10) is installed on one side of the circulation pipeline (8). A first safety valve relief pipeline (9) is installed on one side of the circulation pipeline (8). The ends of the circulation pipeline (8) and the conveying pipeline (10) are connected to a relief storage tank (7). The first safety valve relief pipeline (9) is used to cooperate with the second safety valve relief pipeline (13) to relieve the pressure in the pipeline. The relief storage tank (7) is used to store some of the overpressure solution.

2. The neopentyl glycol solution delivery system according to claim 1, characterized in that, A filter (6) is installed on one side of the circulation pipeline (8), and the filter (6) is connected to a pipeline manifold.

3. The neopentyl glycol solution delivery system according to claim 1, characterized in that, The delivery pump (3) is equipped with a pipeline steam tracing (4) and a steam condensate pipeline (5) on one side.

4. The neopentyl glycol solution delivery system according to claim 1, characterized in that, The safety valve discharge line (9) is connected in series between the circulation line (8) and the delivery line (10).

5. A neopentyl glycol solution delivery system according to claim 1, characterized in that, A venting pipeline is connected in series between the circulation pipeline (8) and the delivery pipeline (10). A rupture disc (12) is installed on one side of the venting pipeline, and the venting storage tank (7) is installed on the pressure relief side of the rupture disc (12).

6. A neopentyl glycol solution delivery system according to claim 5, characterized in that, Control valves are installed at the circulation pipeline (8), the delivery pipeline (10), and the discharge pipeline.

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