A methanol delivery system

Abstract

The present invention discloses a methanol delivery system, which includes a methanol output unit; the methanol output unit includes a methanol storage tank, a delivery pump and a methanol output pipeline, and the methanol receiving unit includes a methanol receiving tank and a methanol receiving pipeline; the beginning of the methanol delivery pipeline is connected to the methanol output unit, and the end of the methanol delivery pipeline is connected to the methanol receiving unit. Advantages: Under the action of the delivery pump, the methanol in the methanol storage tank can be transported to the methanol receiving tank in turn through the methanol output pipeline, the methanol delivery pipeline and the methanol receiving pipeline; all-day delivery is achieved, the delivery efficiency is high, and the problem of methanol transportation difficulties is solved; the methanol delivery pipeline of the present invention is buried below the ground frozen layer, and is monitored in real time through remote monitoring throughout the whole process, which is safe and reliable. Through pipeline transportation, the cost can be reduced to 0.2 yuan per ton per kilometer. Compared with road or railway transportation, the transportation cost can be saved by 0.3 to 0.7 yuan per ton per kilometer.

Description

Technical field:

[0001] The invention relates to the technical field of methanol transportation, and in particular to a methanol transportation system. Background technology:

[0002] Methanol is an organic compound, the simplest saturated monohydric alcohol, and an important chemical raw material. In the chemical industry, methanol manufacturers usually transport methanol products by rail or road to manufacturers that use methanol as raw materials to produce related chemical products. However, when using road or rail transportation, the problem of "difficulty in hiring vehicles" has always been a bottleneck for product transportation, especially in the fourth quarter of each year, when the concentrated transportation of agricultural and sideline products leads to a serious shortage of boxcars, and there is often a lack of road and rail transportation capacity, making it difficult to transport methanol products. In addition, the cost of transporting methanol by rail is about 0.5 to 0.9 yuan per ton per kilometer, and road transportation also costs 0.5 yuan per ton per kilometer, which is costly. The efficiency of transportation by road or rail is low, and when transported on roads or rails, leakage will cause harm to surrounding vehicles or people, posing a serious safety hazard. Summary of the invention:

[0003] The object of the present invention is to provide a methanol transportation system which is beneficial to reducing transportation costs and improving transportation efficiency.

[0004] The present invention is implemented by the following technical scheme: a methanol delivery system, characterized in that it includes a methanol output unit, a methanol delivery pipeline and a methanol receiving unit; the starting end of the methanol delivery pipeline is connected to the methanol output unit, and the end of the methanol delivery pipeline is connected to the methanol receiving unit; the methanol output unit includes a methanol storage tank, a delivery pump and a methanol output pipeline; the outlet of the methanol storage tank is connected to the inlet of the delivery pump, the outlet of the delivery pump is connected to the inlet end of the methanol output pipeline, the outlet end of the methanol output pipeline is connected to the starting end of the methanol delivery pipeline, a first pressure regulating valve is installed on the methanol output pipeline, and the methanol output pipeline between the delivery pump and the first pressure regulating valve is connected to the methanol output pipeline. A pressure sensor is installed on the line; the pressure sensor is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the first pressure regulating valve; the methanol receiving unit includes a methanol receiving tank and a methanol receiving pipeline, the inlet of the methanol receiving pipeline is connected to the end of the methanol delivery pipeline, the outlet of the methanol receiving pipeline is connected to the methanol receiving tank, and a second pressure regulating valve is installed on the methanol receiving pipeline; a second pressure transmitter and a third pressure transmitter are installed on the methanol receiving pipeline at both ends of the second pressure regulating valve, the second pressure transmitter and the third pressure transmitter are both electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the second pressure regulating valve.

[0005] Furthermore, a first flow sensor is installed on the methanol output pipeline between the delivery pump and the first pressure regulating valve.

[0006] Furthermore, it also includes a plurality of valve chambers, and the methanol delivery pipeline passes through each of the valve chambers in sequence; a shut-off valve is installed on the methanol delivery pipeline in the valve chamber, and the inlet and outlet of the shut-off valve are both connected to a bypass pipeline, and the bypass valve is installed on the bypass pipeline; a first pressure transmitter is installed on the bypass pipeline at the inlet of the bypass valve, and the first pressure transmitter is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the shut-off valve and the delivery pump.

[0007] Furthermore, degassing filters are installed on the methanol output pipeline at the outlet of the delivery pump and on the methanol receiving pipeline at the inlet of the methanol receiving tank.

[0008] Furthermore, a switching valve is provided on the methanol receiving pipeline in parallel with the second pressure regulating valve.

[0009] Furthermore, a safety valve A is installed on the methanol receiving pipeline at the outlet of the second pressure regulating valve, and the outlet of the safety valve A is connected to the methanol receiving tank through a pipeline.

[0010] Furthermore, a pipe cleaner ball launching cylinder is provided in parallel on the methanol output pipeline at the outlet of the first pressure regulating valve, a pipe cleaner ball receiving cylinder is installed on the methanol receiving pipeline at the inlet of the second pressure regulating valve, and a filter A is connected in series at the outlet of the pipe cleaner ball receiving cylinder.

[0011] Furthermore, the bottoms of the pipe cleaner ball launching barrel and the pipe cleaner ball receiving barrel are both connected to a sewage trough through a sewage pipe.

[0012] Furthermore, the pipe cleaning device ball launching barrel and the pipe cleaning device ball receiving barrel are both connected with nitrogen purge pipelines.

[0013] The advantages of the present invention are as follows: under the action of the delivery pump, the present invention can transport the methanol in the methanol storage tank to the methanol receiving tank in turn through the methanol output pipeline, the methanol delivery pipeline and the methanol receiving pipeline over a long distance; all-day delivery is achieved with high delivery efficiency, effectively reducing the pressure of railway transportation and solving the problem of difficulty in transporting methanol; the methanol delivery pipeline of the present invention is buried below the ground frozen layer and is not restricted by external conditions such as geography and meteorology. The entire process is monitored in real time through remote monitoring. Compared with road or rail transportation, it is safer and more reliable, and there is no tail gas emission and noise pollution, which is an efficient and environmentally friendly transportation method; in addition, through pipeline transportation, the cost can be reduced to 0.2 yuan per ton per kilometer, and compared with road or rail transportation, the transportation cost can be saved by 0.3 to 0.7 yuan per ton per kilometer. Description of the drawings:

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the control structure of the present invention.

[0016] The markings of the components in the accompanying drawings are as follows: methanol output unit 1, methanol storage tank 1.1, delivery pump 1.2, methanol output pipeline 1.3, first pressure regulating valve 1.4, first flow sensor 1.5, pressure sensor 1.6, methanol delivery pipeline 2, valve chamber 3, cut-off valve 3.1, bypass pipeline 3.2, bypass valve 3.3, first pressure transmitter 3.4, methanol receiving unit 4, methanol receiving tank 4.1, methanol receiving pipeline 4.2, second pressure regulating valve 4.3, second pressure transmitter 4.4, third pressure transmitter 4.5, switching valve 4.6, safety valve A4.7, filter B4.8, second flow sensor 4.9, controller 5, degassing filter 6, pig launching barrel 7, pig receiving barrel 8, filter A9, drain pipe 10, drain tank 11, nitrogen purge pipeline 12, safety valve B13. Specific implementation method:

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1 and Figure 2 As shown, this embodiment provides a methanol delivery system, which includes a methanol output unit 1, a methanol delivery pipeline 2, a methanol receiving unit 4 and four valve chambers 3; the starting end of the methanol delivery pipeline 2 is connected to the methanol output unit 1, and the end of the methanol delivery pipeline 2 passes through each valve chamber 3 in turn to be connected to the methanol receiving unit 4, and the methanol delivery pipeline 2 is buried below the ground frozen layer and is not restricted by external conditions such as geography and meteorology; in this embodiment, the methanol output unit 1 is 52.6 kilometers away from the methanol receiving unit 4, the methanol output unit 1 is 12.5 kilometers away from the first valve chamber 3, the distances between each adjacent two of the four valve chambers 3 are 8.9 kilometers, 11.2 kilometers, and 8.7 kilometers respectively, and the last valve chamber 3 is 11.3 kilometers away from the methanol receiving unit 4.

[0019] The methanol output unit 1 includes a methanol storage tank 1.1, a delivery pump 1.2 and a methanol output pipeline 1.3; the outlet of the methanol storage tank 1.1 is connected to the inlet of the delivery pump 1.2, the outlet of the delivery pump 1.2 is connected to the inlet end of the methanol output pipeline 1.3, the outlet end of the methanol output pipeline 1.3 is connected to the starting end of the methanol delivery pipeline 2, and the methanol output pipeline 1.3 is equipped with a first pressure regulating valve 1.4; the delivery pump 1.2 is used to extract the methanol in the methanol storage tank 1.1, and the flow rate and pressure in the methanol output pipeline 1.3 are controlled by adjusting the opening of the first pressure regulating valve 1.4; the methanol output pipeline 1.3 between the delivery pump 1.2 and the first pressure regulating valve 1.4 is equipped with a first flow sensor 1.5 and a pressure sensor The pressure sensor 1.6 is electrically connected to the input end of the controller 5, and the output end of the controller 5 is electrically connected to the first pressure regulating valve 1.4. The flow rate in the methanol output pipeline 1.3 detected by the first flow sensor 1.5 is monitored in real time by the remote monitoring system; the pressure in the methanol output pipeline 1.3 is detected in real time by the pressure sensor 1.6, and the signal is fed back to the controller 5, and the opening of the first pressure regulating valve 1.4 is controlled by the controller 5; a degassing filter 6 is installed on the methanol output pipeline 1.3 between the delivery pump 1.2 and the first flow sensor 1.5; the degassing filter 6 can separate and filter the gas and impurities contained in the methanol from the methanol, thereby ensuring the detection accuracy of the first flow sensor 1.5.

[0020] A shut-off valve 3.1 is installed on the methanol delivery pipeline 2 in the valve chamber 3, and a bypass pipeline 3.2 is connected to the inlet and outlet of the shut-off valve 3.1, and a bypass valve 3.3 is installed on the bypass pipeline 3.2; when a leakage fault occurs in the methanol delivery pipeline 2, the shut-off valve 3.1 and the delivery pump 1.2 in the corresponding valve chamber 3 are closed to isolate the leakage section in time, and the methanol in the leakage section is led out from the bypass pipeline 3.2 to facilitate repair; a first pressure transmitter 3.4 is installed on the bypass pipeline 3.2 at the inlet of the bypass valve 3.3, and the first pressure transmitter 3.4 is electrically connected to the input end of the controller 5, and the output end of the controller 5 is electrically connected to the shut-off valve 3.1 and the delivery pump 1.2. The pressure at the corresponding position of the methanol delivery pipeline 2 is detected in real time through the first pressure transmitter 3.4, and is fed back to the controller 5 in real time. When the pressure value is abnormal, the shut-off valve 3.1 is controlled to be closed and the delivery pump 1.2 is controlled to be shut down through the controller 5.

[0021] The methanol receiving unit 4 comprises a methanol receiving tank 4.1 and a methanol receiving pipeline 4.2. The inlet of the methanol receiving pipeline 4.2 is connected to the end of the methanol delivery pipeline 2, and the outlet of the methanol receiving pipeline 4.2 is connected to the methanol receiving tank 4.1. The methanol receiving pipeline 4.2 is provided with a second pressure regulating valve 4.3. The methanol delivered through the methanol delivery pipeline 2 is delivered to the methanol receiving tank 4.1 through the methanol receiving pipeline 4.2. The flow rate and pressure in the methanol receiving pipeline 4.2 are controlled to meet the process requirements by adjusting the opening of the second pressure regulating valve 4.3. The methanol receiving pipeline 4.2 at both ends of the second pressure regulating valve 4.3 is provided with a second pressure regulating valve 4.3. The second pressure transmitter 4.4 and the third pressure transmitter 4.5 are electrically connected to the input end of the controller 5, and the output end of the controller 5 is electrically connected to the second pressure regulating valve 4.3. During the transportation of methanol, due to loss, the pressure gradually decreases. The second pressure transmitter 4.4 and the third pressure transmitter 4.5 detect the pressure on the methanol receiving pipeline 4.2 and the pressure difference between the two ends of the second pressure regulating valve 4.3 in real time, and feed back to the controller 5 in real time. The controller 5 adjusts the opening of the second pressure regulating valve 4.3 so that the pressure on the methanol receiving pipeline 4.2 meets the process requirements. Request; A filter B4.8 is installed on the methanol receiving pipeline 4.2 at the inlet of the second pressure regulating valve 4.3. Methanol will be mixed with some impurities during the transportation process, and most of the impurities can be filtered out by the filter B4.8; A degassing filter 6 and a second flow sensor 4.9 are installed along the medium flow direction on the methanol receiving pipeline 4.2 at the inlet of the methanol receiving tank 4.1. The flow rate flowing into the methanol receiving tank 4.1 is remotely monitored in real time by the second flow sensor 4.9. The gas mixed in the methanol and the impurities remaining after filtering by the filter B4.8 are separated and filtered from the methanol by the degassing filter 6 to ensure that the second flow sensor The detection accuracy is improved; a switching valve 4.6 is provided on the methanol receiving pipeline 4.2 in parallel with the second pressure regulating valve 4.3. When the second pressure regulating valve 4.3 fails, the switching valve 4.6 can be temporarily activated to ensure the normal transportation of methanol; a safety valve A4.7 is installed on the methanol receiving pipeline 4.2 at the outlet of the second pressure regulating valve 4.3. The outlet of the safety valve A4.7 is connected to the methanol receiving tank 4.1 through a pipeline. When the pressure in the methanol receiving pipeline 4.2 exceeds the process requirement value, the pressure is released through the safety valve A4.7, which can further ensure that the pressure in the methanol receiving pipeline 4.2 meets the process requirements and ensure safety.

[0022] A pipe cleaner ball launcher 7 is connected in parallel on the methanol output pipeline 1.3 at the outlet of the first pressure regulating valve 1.4, and a pipe cleaner ball receiver 8 is installed on the methanol receiving pipeline 4.2 at the inlet of the second pressure regulating valve 4.3. A filter A9 is connected in series at the outlet of the pipe cleaner ball receiver 8. Before the operation of the methanol delivery system or after a period of operation, the pipeline needs to be cleaned and descaled according to process requirements. At this time, the valves on the methanol output pipeline 1.3 and the methanol receiving pipeline 4.2 are closed, and the valves on the two pipelines connected with the pipe cleaner ball launcher 7 and the methanol output pipeline 1.3 are opened, and the valves on the two pipelines connected with the pipe cleaner ball receiver 8 and the methanol receiving pipeline 4.2 are opened, so that the methanol in the methanol storage tank 1.1 enters the pipe cleaner ball launcher 7, and the methanol is used as a power to push the pipe cleaner ball in the pipe cleaner ball launcher 7 to run along the methanol delivery pipeline 2, and at the same time, the methanol delivery pipeline 2 is cleaned and descaled. After passing through the methanol delivery pipeline 2, the pipe cleaner ball enters the pipe cleaner ball receiver 8, and methanol flows into the methanol receiving tank 4.1 after being filtered by the filter A9; the bottoms of the pig launching barrel 7 and the pig receiving barrel 8 are connected to the sewage tank 11 through the sewage pipe 10, and the sewage pipe 10 is equipped with a sewage valve. After the cleaning is completed, the sewage valve is opened to allow the methanol accumulated in the pig launching barrel 7 and the pig receiving barrel 8 to flow into the sewage tank 11; the pig launching barrel 7 and the pig receiving barrel 8 are connected to the nitrogen purge pipeline 12, through which the nitrogen purge pipeline 12 introduces nitrogen to purge the residual methanol in the pig launching barrel 7 and the pig receiving barrel 8 into the sewage tank 11; the pig launching barrel 7 and the pig receiving barrel 8 are connected with a safety valve B13, the outlet of the safety valve B13 on the pig launching barrel 7 is connected to the sewage tank 11, and the outlet of the safety valve B13 on the pig receiving barrel 8 is connected to the methanol receiving tank 4.1 through a pipeline, and the safety valve B13 is used to relieve the pressure on the pig launching barrel 7 and the pig receiving barrel 8.

[0023] Under the action of the delivery pump 1.2, the present invention can transport the methanol in the methanol storage tank 1.1 to the methanol receiving tank 4.1 through the methanol output pipeline 1.3, the methanol delivery pipeline 2 and the methanol receiving pipeline 4.2 in sequence. Through pipeline transportation, it can achieve all-day transportation with high transportation efficiency, effectively reduce the pressure of railway transportation, and solve the problem of difficult transportation of methanol. The freezing point of methanol is -97.8℃, the boiling point is 64.7℃, it is liquid at room temperature, and it is not easy to change phase and freeze. It is a substance that is easier to transport than oil and natural gas. Methanol transportation The delivery pipeline 2 is buried below the ground frozen layer, is not restricted by external conditions such as geography and meteorology, can pass through mountains and rivers, cross deserts and seas, is not afraid of heat and freezing, and is monitored in real time through remote monitoring. Compared with road or rail transportation, it is safer and more reliable; the present invention has no tail gas emissions and noise pollution during the long-distance transportation of methanol, and is an efficient and environmentally friendly transportation method; in addition, the present invention can reduce the cost to 0.2 yuan per ton per kilometer through pipeline transportation, which can save 0.3 to 0.7 yuan per ton per kilometer in transportation costs compared with road or rail transportation.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A methanol delivery system, characterized in that: It includes a methanol output unit, a methanol delivery pipeline and a methanol receiving unit; the starting end of the methanol delivery pipeline is connected to the methanol output unit, and the end of the methanol delivery pipeline is connected to the methanol receiving unit; The methanol output unit comprises a methanol storage tank, a delivery pump and a methanol output pipeline; the outlet of the methanol storage tank is connected to the inlet of the delivery pump, the outlet of the delivery pump is connected to the inlet end of the methanol output pipeline, the outlet end of the methanol output pipeline is connected to the starting end of the methanol delivery pipeline, a first pressure regulating valve is installed on the methanol output pipeline, and a pressure sensor is installed on the methanol output pipeline between the delivery pump and the first pressure regulating valve; the pressure sensor is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the first pressure regulating valve; The methanol receiving unit comprises a methanol receiving tank and a methanol receiving pipeline, the inlet of the methanol receiving pipeline is connected to the end of the methanol delivery pipeline, the outlet of the methanol receiving pipeline is connected to the methanol receiving tank, and a second pressure regulating valve is installed on the methanol receiving pipeline; a second pressure transmitter and a third pressure transmitter are installed on the methanol receiving pipeline at both ends of the second pressure regulating valve, the second pressure transmitter and the third pressure transmitter are both electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the second pressure regulating valve; It also includes a plurality of valve chambers, and the methanol delivery pipeline passes through each of the valve chambers in sequence; a cut-off valve is installed on the methanol delivery pipeline in the valve chamber, and a bypass pipeline is connected to the inlet and outlet of the cut-off valve, and the bypass pipeline is equipped with a bypass valve; a first pressure transmitter is installed on the bypass pipeline at the inlet of the bypass valve, and the first pressure transmitter is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the cut-off valve and the delivery pump; A degassing filter is installed on the methanol output pipeline at the outlet of the delivery pump and on the methanol receiving pipeline at the inlet of the methanol receiving tank; A switching valve is provided on the methanol receiving pipeline in parallel with the second pressure regulating valve.

2. A methanol delivery system according to claim 1, characterized in that: A first flow sensor is installed on the methanol output pipeline between the delivery pump and the first pressure regulating valve.

3. A methanol delivery system according to claim 1, characterized in that: A safety valve A is installed on the methanol receiving pipeline at the outlet of the second pressure regulating valve, and the outlet of the safety valve A is connected to the methanol receiving tank through a pipeline.

4. A methanol delivery system according to any one of claims 1 to 3, characterized in that: A pig ball launching cylinder is connected in parallel on the methanol output pipeline at the outlet of the first pressure regulating valve, a pig ball collecting cylinder is installed on the methanol receiving pipeline at the inlet of the second pressure regulating valve, and a filter A is connected in series at the outlet of the pig ball collecting cylinder.

5. A methanol delivery system according to claim 4, characterized in that: The bottoms of the pipe cleaning device ball launching barrel and the pipe cleaning device ball receiving barrel are both connected to the sewage tank through sewage pipes.

6. A methanol delivery system according to claim 4, characterized in that: The pipe cleaning device ball launching barrel and the pipe cleaning device ball receiving barrel are both connected with nitrogen purge pipelines.

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