通过长分支管道输送天然气时减少热损失的方法

V. M. Yanchuk, A. S. Kuzbozhev, I. V. Shishkin, I. Birillo, P. A. Kuzbozhev
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引用次数: 0

摘要

文章探讨了减少天然气长支线管道运输过程中热量损失的方案。文章对连接主输气管道和配气站的长输气管道的天然气冷却过程进行了计算建模。结果表明,当天然气支线管道长度较长时,特别是在流量减少的情况下,配气站入口处的天然气温度将与地面温度一致。我们已经制定并论证了降低外输天然气管道气体冷却强度的方案,包括增加管道深度、使用隔热涂层以及使用特殊技术手段调节入口处的压力。该技术方案涉及调节天然气管道出口入口处的压力,对该方案进行了计算论证。计算结果可供天然气运输公司使用。实施所开发的减少热损失的解决方案将减少天然气配送站用于天然气加热的能源消耗,并减少燃烧产物的排放。
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Methods to reduce heat losses when transporting gas through long branch pipelines
The article considers options to reduce heat losses accompanying the process of pipeline transportation of natural gas through long branch pipelines. Computational modeling of the gas cooling process in an extended off-take gas pipeline connecting the main gas pipeline and the gas distribution station has been performed. It is shown that when the length of the gas branch pipeline is long, especially in conditions of reduced flow, the gas temperature at the inlet of the gas distribution station will correspond to the ground temperature. We have developed and substantiated options to reduce the intensity of gas cooling in the off-take gas pipeline, involving an increase in its depth, the use of thermal insulation coatings, as well as the regulation of pressure at the inlet using special technical means. The calculation justification of the technical solution, which involves regulating the pressure at the inlet to the gas pipeline outlet, is performed. The results can be used by gas transportation companies. The implementation of the developed solutions to reduce heat losses will reduce the consumption of energy used for gas heating at gas distribution stations and reduce emissions of combustion products.
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