Optimal flow velocity design method for supercritical ethane long-distance conveying pipeline

A long-distance transportation and design method technology, applied in design optimization/simulation, computer-aided design, calculation, etc., can solve problems such as inability to apply supercritical ethane long-distance transportation pipelines

Active Publication Date: 2020-06-19
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0006] The invention provides a method for determining the optimal flow velocity of supercritical ethane long-distance pipelines by introducing the constraints of supercritical ethane stable transportation according to the characteristics of supercritical eth

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  • Optimal flow velocity design method for supercritical ethane long-distance conveying pipeline
  • Optimal flow velocity design method for supercritical ethane long-distance conveying pipeline
  • Optimal flow velocity design method for supercritical ethane long-distance conveying pipeline

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[0105] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0106] The invention provides a method for designing an optimal flow velocity of a supercritical ethane long-distance transmission pipeline, the method comprising the following steps:

[0107] Step 1. Collect basic data of supercritical ethane long-distance transmission pipeline, including transmission medium composition, pipeline length, pipeline delivery volume, ambient temperature, minimum entry pressure, and economic data, including land acquisition cost, pipe material cost, insulation layer Cost, anti-corrosion layer cost, intermediate station construction cost, maintenance cost, electricity price;

[0108] Step 2: Establishing the optimal flow rate design model of the ethane transmission pipeline w...

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Abstract

The invention discloses an optimal flow velocity design method for a supercritical ethane long-distance conveying pipeline, and belongs to the technical field of natural gas pipeline design. The method comprises the steps of 1, collecting basic data of an ethane pipeline; 2, establishing a supercritical ethane long-distance conveying pipeline optimal flow velocity design model which takes the lowest annual reduction cost of the ethane conveying pipeline as a target function and comprises supercritical ethane stable conveying constraints; 3, determining an optimization parameter and a feasibleregion thereof; 4, calculating ethane pipeline design parameters; 5, obtaining a target function value; and 6, changing the optimization parameters to obtain a target function value set, and obtaininga minimum value through economic comparison, so that the corresponding flow rate is the optimal flow rate. The method for designing the optimal flow velocity of the supercritical ethane long-distanceconveying pipeline has the advantages of being clear in calculation process, convenient to operate and high in calculation speed, and guidance is provided for safe, economical and efficient design and operation management of the supercritical ethane long-distance conveying pipeline.

Description

technical field [0001] The invention belongs to the technical field of natural gas pipeline design, and in particular relates to a method for designing an optimal flow velocity of a supercritical ethane long-distance transmission pipeline. Background technique [0002] Ethane is an important chemical raw material, which can be used to synthesize ethylene, polyethylene, and make refrigerants. For long-distance onshore transportation of large amounts of ethane, pipeline transportation is the most convenient and economical transportation method. Due to the low critical temperature and critical pressure, ethane has the conditions to be transported in the supercritical phase region, but there are no design standards and specifications for supercritical ethane long-distance transmission pipelines at home and abroad. Research on optimal flow velocity design is rarely reported, and its design mainly refers to the relevant standards of natural gas and petroleum product pipelines. ...

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Application Information

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IPC IPC(8): G06F30/20G06F113/14G06F111/04
Inventor 贾文龙张员瑞李长俊吴瑕胡鑫怡
Owner SOUTHWEST PETROLEUM UNIV
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