LNG加注趸船安全距离确定方法研究  

Study on method for determining separation distance of LNG bunkering pontoon

作　　者：万古军[1] 党文义[1] 武志峰[1] 凌晓东[1] 

机构地区：[1]中国石油化工股份有限公司青岛安全工程研究院化学品安全控制国家重点实验室

出　　处：《中国安全科学学报》2015年第7期110-115,共6页China Safety Science Journal

摘　　要：为确定液化天然气（LNG）加注趸船与周边建（构）筑物的安全距离,对趸船LNG储罐和加液臂泄漏后果进行数值模拟计算。利用FLACS软件,计算不同泄漏场景LNG气云扩散距离;采用自主开发的LNG火灾计算软件LNGFHR＋计算趸船储罐泄漏和加液臂泄漏池火热辐射强度的影响距离。结果表明：LNG泄漏量、气象条件、风向等均会对LNG气云的扩散距离产生影响;储罐泄漏池火热辐射影响距离大于加液臂的影响距离。根据计算结果,确定LNG加注趸船与重要公共建筑物的安全距离为120-150 m,与民用建筑物的安全距离为85-110 m,与生产厂房、库房和甲、乙、丙类液体储罐的安全距离为90-110 m。In order to determine the separation distance between a LNG bunkering pontoon and important buildings around it, a numerical simulation was conducted to calculate the consequence of LNG tank and filling arm leakage. The commercial software FLACS and independent development software LNGFHR were used to calculate the LNG leakage diffusion and LNG pool fire thermal radiation influence distance separately. The results show the LNG leakage quantities, weather condition and wind direction affect the LNG vapor cloud diffusion distance , that tank LNG pool fire thermal radiation＇s influence distance is larger than that of filling arm LNG pool fire. According to the results, the separation distance between LNG bunkering pontoon and important buildings around it was determined. For example, the separation distance for important public buildings, railway, bridge, and wharf is 120 - 150 m and civil buildings was 85 - 110 m. The separation distance for production plant, storehouse and class A, B, C liquid storage tank is 90- 110 m.

关 键 词：液化天然气(LNG) 加注趸船 LNG扩散 LNG池火 安全距离 

分 类 号：X913.4[环境科学与工程—安全科学]