LDAR技术在天然气净化厂甲烷减排中的应用

LDAR technology application of methane emission reduction in natural gas purification plants

关键词:  天然气净化厂  甲烷减排  逸散排放  泄漏检测与修复(LDAR)

Key words:  natural gas purification plant  methane emission reduction  emission  leak detection and repair(LDAR)

摘要:

目的 针对天然气净化厂的甲烷逸散排放问题，试点开展甲烷泄漏检测与修复（LDAR）技术，以研究其甲烷减排效果。方法 通过在天然气净化厂开展甲烷泄漏检测与修复，对比修复前后的甲烷排放量，确定LDAR技术在天然气净化厂甲烷减排中的应用效果。结果 对天然气净化厂装置进行泄漏检测，共发现甲烷泄漏密封点57个，全厂甲烷排放量11 696 kg/a，进行泄漏点修复后，甲烷排放量减至531 kg/a，减排甲烷11165 kg/a，减排率达95.46%。结论 针对天然气净化厂的甲烷逸散排放，通过开展泄漏检测与修复，显著减少了甲烷排放量，为LDAR技术在油气行业甲烷减排的推广应用提供参考。

Abstract:

Objective In response to the methane emission problem during the natural gas treatment process of purification plants, the pilot of methane leak detection and repair (LDAR) technology was carried out to study its effect of methane emission reduction. Method By conducting methane leak detection and remediation in natural gas purification plants, and comparing the methane emissions before and after remediation, the application effect of LDAR technology in methane emission reduction in natural gas purification plants was determined. Result A leak detection was conducted on the natural gas purification plant equipment, and a total of 57 methane leakage sealing points were found. The total methane emissions of the plant were 11 696 kg/a. After repairing the leakage points, the methane emissions decreased to 531 kg/a, reducing methane emissions by 1 1165 kg/a, and the emission reduction rate reached 95.46%. Conclusion In response to the methane emissions from natural gas purification plants, leak detection and remediation have significantly reduced methane emissions, providing reference for the promotion and application of LDAR technology in methane emission reduction in the oil and gas industry.