中国压力调节站的甲排放:对各种定量方法的比较分析
Zhengyi Xie1, Jianfeng Tang1, Haipeng Zhu1
1College of Pipeline and Civil Engineering, China University of Petroleum (East China), Qingdao, China.
The Science of the total environment
|November 22, 2024
概括
天然气M&R站的常规监测可以减少甲排放. 这项研究发现,边缘,仪器和连接器是关键的排放源,随着随机拉格朗式方法证明最可靠的流量分析.
科学领域:
- 环境科学 环境科学
- 大气化学 大气化学
- 能源系统工程 能源系统工程
背景情况:
- 计量和调节 (M&R) 站是天然气配送系统中的关键基础设施.
- 这些发电站的甲 (CH4) 排放有助于气候变化,需要有效的缓解策略.
- 中国正在积极努力改善其配电系统排放的监测和清单.
研究的目的:
- 评估中国北部和中部M&R站的甲排放.
- 为了比较不同甲排放估计方法的有效性.
- 确定这些设施中甲泄漏的主要来源.
主要方法:
- 在11个M&R站检测和分析甲排放.
- 使用动态流量室方法,反向高斯羽毛模型 (OTM33A) 和随机拉格朗 (LS) 逆向模型估计甲排放量.
- 确定来源的排放因子和累积流量的计算.
主要成果:
- ,仪表/计量器和连接器被确定为主要的甲排放来源.
- 动态流体室方法的排放因子为0.0034,0.0022,7.1e-04 kg/h,分别为片,仪表/计量器和连接器.
- 随机拉格兰 (LS) 方法在有限的测量距离和连续排放的M&R站估计甲流量时表现出更高的可靠性.
结论:
- 建议使用随机拉格朗基数 (LS) 方法在M&R站进行准确的甲流量分析.
- 在M&R站实施固定监测对于建立排放清单和确保运营安全至关重要.
- 研究的压力调节站的总排放系数估计为0.013公斤/小时.
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