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首页> 外文期刊>Engineering Applications of Computational Fluid Mechanics >Simulation of cargo VOC emissions from petroleum tankers in transit in Canadian waters
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Simulation of cargo VOC emissions from petroleum tankers in transit in Canadian waters

机译：加拿大水路中石油罐车货舱排放的模拟

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The emissions of volatile organic compounds (VOCs) from petroleum product tankers potentially represent a significant source of VOCs in port cities. Emission factors are used to estimate the produced VOCs. VOC emissions from transit operations were simulated using a two part model of heat and mass transfer. Using local meteorological data of air temperatures, solar radiation and wind speed, the heat transfer within the tank was modeled. Results showed that bulk cargo temperature remained relatively steady at 25–28°C, the oil surface oscillated diurnally by 1–2°C, and the deck temperature oscillates diurnally by 15–20°C. The solar insolation had the largest effect on the tank temperatures. VOC emissions for two crude oils and gasoline, two tank configurations, and two meteorological conditions were estimated using a model derived from a mass balance on the tank and the obtained temperature profile. Only 3 of 8 scenarios had pressure increases large enough to cause venting of VOC. C2-C5 compounds constituted the majority of VOCs released from crude oils and ethanol made up the majority of the VOCs released from the gasoline carrying barge. The calculated daily emission factors for crude oil and gasoline (barge) were 10 mg/L/day and 135 mg/L/day respectively.
机译：石油产品罐中的挥发性有机化合物（VOC）的排放可能代表港口城市的重要来源。排放因子用于估计所产生的VOC。使用两部分的热量和传质模型模拟来自运输操作的VOC排放。使用空气温度的局部气象数据，太阳辐射和风速，模拟罐内的热传递。结果表明，在25-28°C下，大量货物温度仍然相对稳定，油表面在1-2℃下振荡，甲板温度在15-20℃下振荡。太阳能缺失对坦克温度产生了最大的影响。使用源自罐上的质量平衡的模型和所获得的温度分布，估计两个原油和汽油，两个罐配置和两个气象条件的VOC排放。只有8个方案中只有3个压力会增加足够大的，以引起VOC的通风。 C2-C5化合物构成了从原油中释放的大多数VOC，乙醇组成了从汽油携带驳船释放的VOC的大多数VOC。原油和汽油（驳船）的计算的每日排放因子分别为10mg / L /天，分别为135mg / L /天。

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