Detonation sensitivity of liquid fuels

大量可燃液体和气体通常由卡车和火车运输。该项目是一项研究的一部分，旨在评估与大量可燃液体和压力液化气体运输相关的潜在危害。特别令人感兴趣的是这种材料与空气混合时的引爆性。爆轰是一种超音速反应波，对典型的碳氢化合物-空气混合物产生的超压比约为20。人们对大量常规运输的工业液体的引爆能力知之甚少或一无所知。这将通过测量起爆室的大小来评估一些液体的可爆性来解决。电池的尺寸代表了爆震波的特征长度尺度，并被证明代表了可燃混合物对爆炸的敏感性。电池的尺寸是通过一个完善的烟灰箔技术来测量的。虽然爆震波可以在空气中由液体燃料液滴组成的非均匀混合物中传播，但电池的尺寸通常非常大，无法在实验室环境中测量。本研究仅限于在大气压力下燃料蒸气和空气的均匀混合物中的爆震波。测试将在100摄氏度和燃料蒸气空气混合物可能形成的最低温度下进行，通常在25摄氏度到30摄氏度之间。

Large quantities of combustible liquids and gases are routinely transported by truck and rail car. This project is part of a study to assess the potential hazards associated with the transport of large quantities of combustible liquids and pressure liquefied gases. Of particular interest is the detonability of the material when mixed with air. A detonation is a supersonic reaction wave that produces an overpressure ratio on the order of twenty for typical hydrocarbon-air mixtures. Little or nothing is known about the detonability of numerous industrial liquids routinely transported in bulk. This will be addressed by assessing the detonability of a number of liquids through the measurement of the detonation cell size. The cell size represents the characteristic length scale of a detonation wave and has been shown to represent the sensitivity of a combustible mixture to detonate. The cell size is measured via a well established soot foil technique. Although detonation waves can propagate through a heterogeneous mixture consisting of liquid fuel droplets in air, the cell size is generally very large and cannot be measured in a laboratory setting. This study is restricted to detonation waves in homogeneous mixtures of fuel vapour and air at atmospheric pressure. Testing will be performed at 100 deg C and the lowest possible temperature where a fuel vapour air mixture can be formed, typically between 25 deg C and 30 deg C.