输气管道减阻内涂层与减阻剂应用现状及效益分析

Application and economic benefits of internal drag-reduction coating and DRA in gas pipeline

综述了提高天然气管输效率的内涂层法和减阻剂法的经济效益、优势、不足以及应用前景。内涂层法已在国内外长输天然气管道中成熟应用,经济效益明显,但存在一次性投资较大、施工程序复杂、施工条件苛刻,涂层寿命尚不确定等问题;减阻剂法因加注工艺简单、适用性广而备受青睐,但作为管道储备技术尚处于开发研究阶段。

The paper reviews the advantages and disadvantages of internal drag-reduction coating and DRA used to improve pipeline gas transmission as well as their economic benefit and prospects. The internal drag-reduction coating has been used as a proved technique in long-distance gas pipelines at home and abroad with significant economic benefit, but its application is restricted by some handicaps such as large one-off investment, complex procedures, harsh operating conditions and uncertainty of coating service life. The use of DRA has won great favor due to its simple technology and wide applicability. However, as a technique which would be used in the future, it is still in the phase of research and development. （2 Figures, 16 References）