Experimental study of the flow characteristics and impact of dense-phase CO 2 jet releases

Abstract High-pressure dense-phase CO 2 transportation is the main approach for transportation of CO 2 in China. During the transportation process, CO 2 is in a high-pressure dense phase. If CO 2 leakage occurs in such a case owing to line equipment damage, the low-temperature high-speed jet flow will be hazardous for human lives and property. To study CO 2 leakage, an experiment was conducted to examine the impact of a dense-liquid CO 2 jet during accidental releases. The impact value was measured for different nozzle sizes, inner pressures, and distances. Therefore, studying the mechanism and effectively evaluating the consequences and impact of the accidental leakage of high-pressure dense-phase CO 2 are important for ensuring the security of its transportation.