基于SLAB和AFTOX模型的LNG加气站大气环境风险评估
Atmospheric Environmental Risk Assessment of LNG Refueling Stations Based on SLAB and AFTOX Models
时任辉1
作者信息
- 1. 四川嘉盛裕环保技术有限公司,四川成都 610000
- 折叠
摘要
通过设定LNG加气站环境风险事故情景,分别采用SLAB和AFTOX模型模拟预测LNG加气站泄漏和火灾伴生/次生污染物CO的大气环境风险影响程度.结果表明:在风险事故情景下,下风向5 km范围内不同距离的甲烷和CO最大浓度未超过大气毒性终点浓度,甲烷最大浓度出现在下风向10m处,浓度值为32637.575 mg/m3;CO最大浓度出现在下风向5 km处,浓度值为1.746E-4 mg/m3.考虑低温液态LNG的危险性和事故触发具有不确定性,LNG加气站在运营过程中仍需重点做好风险防范措施,编制企业突发环境事件应急预案,建立企业/区域环境风险防控体系,有效防控环境风险.
Abstract
By setting up environmental risk accident scenarios for LNG refueling stations,SLAB and AFTOX models were used to simulate and predict the atmospheric environmental risk impact of associated/secondary pol-lutants CO from LNG refueling station leaks and fires.The results indicate that under the risk accident scenario,the maximum concentrations of methane and CO at different distances within a 5km downwind direction did not exceed the atmospheric toxicity endpoint concentration.The maximum concentration of methane occurred at a dis-tance of 10m downwind,with a concentration value of 32637.575 mg/m3;The maximum concentration of CO oc-curs at 5km downwind,with a concentration value of 1.746E-4 mg/m3.Considering the danger of low-temperature liquid LNG and the uncertainty of accident triggering,LNG refueling stations still need to focus on taking risk prevention measures during operation,preparing emergency plans for unexpected environmental events,establis-hing a corporate/regional environmental risk prevention and control system,and effectively preventing and con-trolling environmental risks.
关键词
LNG加气站/SLAB模型/AFTOX模型/大气环境风险评估Key words
LNG refueling station/SLAB model/AFTOX model/atmospheric environmental risk assessment引用本文复制引用
出版年
2024
NETL
NSTL
万方数据