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Transportation process for transporting chemical fluid by adopting long-distance pipeline

A technology for pipeline transportation and fluid transportation, applied in the fields of metallurgy and chemical industry, can solve problems such as pipeline blockage, and achieve the effect of ensuring safety and environmental protection, solving maintenance difficulties, and preventing injury and environmental pollution.

Pending Publication Date: 2022-04-12
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a long-distance pipeline transportation system for chemical fluids that can effectively solve the problem of pipeline blockage caused by wall scaling and pipeline deformation.

Method used

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  • Transportation process for transporting chemical fluid by adopting long-distance pipeline
  • Transportation process for transporting chemical fluid by adopting long-distance pipeline
  • Transportation process for transporting chemical fluid by adopting long-distance pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] A certain tank farm is 850m (straight-line distance) from the waste acid (waste hydrochloric acid) treatment center, passing through 5 roads and crossing 3 gates, all of which are passed through viaduct. The specific plan is as follows:

[0090] 1. The rated flow rate of the selected pump is 20m 3 / h, the maximum lift is 45m, the maximum speed of the pump is 1500rpm (the working speed is 150-1500rpm), and it is stable within the range of 950-1050rpm;

[0091] 2. A total of 8 sewage pits and corresponding sewage pumps (flow rate 10m 3 / h, head 40m, liquid level gauge and conductivity gauge (0~200ms / cm);

[0092] 3. Equipped with a flow meter (0 ~ 40m 3 / h);

[0093] 4. PPH pipeline with a diameter of DN80, and the outside of the pipeline is covered with rubber and plastic insulation materials;

[0094] 5. The external pipe tank adopts a box-type structure and is made of PPH material. There are 4 pipes arranged inside (two of which are used to transport waste liquid,...

Embodiment 2

[0097] A certain tank farm is 500m (straight-line distance) from the waste acid (waste hydrochloric acid) treatment center, passing through 1 road and crossing 2 gates, all of which are elevated. The specific plan is as follows:

[0098] 1. The rated flow rate of the selected pump is 10m 3 / h, the maximum lift is 25m, the maximum pump speed is 1500rpm (the working speed is 150-1500rpm), and it is stable within the range of 900-1050rpm;

[0099] 2. A total of 3 sewage pits and corresponding sewage pumps (flow rate 10m 3 / h, head 20m, liquid level gauge and conductivity gauge (0~200ms / cm);

[0100] 3. Equipped with a flow meter (0~20m 3 / h);

[0101] 4. PPH pipeline with a diameter of DN65, the outside of the pipeline is covered with rubber and plastic insulation materials;

[0102] 5. The external pipe tank adopts a box-type structure and is made of PPH material. There are 4 pipes arranged inside (two of which are used to transport waste liquid, one for use and one for sta...

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PUM

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Abstract

The invention provides a conveying process for conveying chemical fluid through a long-distance pipeline, the chemical fluid is viscous fluid or a solution containing easily-precipitated solids or suspended solids, and the conveying process comprises the steps that 1, the pipeline compensation amount is controlled, specifically, a plurality of U-shaped bends are arranged at intervals along the whole conveying pipeline to absorb the deformation amount caused by expansion or contraction of the pipeline, and the pipeline compensation amount is controlled; controlling the total compensation amount according to delta L = alpha * L * delta T; alpha is the thermal expansion coefficient of the pipeline, L is the length of the pipeline, delta T is the seasonal temperature difference of the corresponding geographic area, and delta L is the pipeline deformation under the conditions of the length L and the temperature difference delta T; 2, flow velocity control: arranging a plurality of lift pumps in a conveying line and combining fluid characteristics to control the flow velocity of fluid in a pipeline according to P = a * L * rho * v2 / 2d; p is the fluid conveying resistance, a is the resistance coefficient of the fluid, rho is the density of the fluid, L is the length of the pipeline, d is the diameter of the pipeline, and v is the fluid speed.

Description

technical field [0001] The invention relates to the technical fields of metallurgy and chemical industry, in particular to a transport process for transporting chemical fluids through long-distance pipelines. Background technique [0002] Generally speaking, chemical fluids are toxic and harmful. Therefore, once they leak, they will pose a great threat to personnel and the environment. Therefore, long-distance pipeline transportation (more than 1 kilometer) is rarely used. On the other hand, as the number of people in the factory is reduced, the demand for centralized treatment of various chemical media is becoming more and more urgent. Long-distance transportation technology needs to be developed, and it is urgent to solve the problem of centralized treatment of waste liquid from multiple chemical production lines at long distances. , to ensure the safety and environmental protection of the transportation process, prevent injury and environmental pollution, solve the proble...

Claims

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Application Information

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IPC IPC(8): F17D1/14F17D3/01F17D5/02F17D5/00
Inventor 谷开峰赵卫斌李志勇
Owner BAOSHAN IRON & STEEL CO LTD