关键词: 海洋平台, 冷放空, 可燃气云, 扩散积聚, 影响因素

Abstract: In order to research on the diffusion and distribution rule of cold vent flammable gas at offshore platform,this paper takes certain platform as research object to establish the numerical simulation model and gas diffusion model and simulate the diffusion and accumulation behaviors of cold vent flammable gas of flare. The simulation results indicate that cold vent gas may spread to drill floor area under the action of the wind,which is a threat to drill floor area; the gas mainly spreads to upward space under low wind speed; when the wind speed is 5. 1 m/s,combustible gas with 1. 25% volume concentration may spread to the maximum diffusion distance of 85. 9 m and concentrates on the derrick area. And this will directly result in derrick equipment failure when explosion occurs because of combustion; the higher the wind speed becomes,the stronger the combustible gas dilutes and the easier the combustible gas diffuses; with wind coming from different directions,the distribution volume and diffusion distance of combustible gas are basically the same.

Key words: Home｜Journal Papers｜About CNKI｜User Service｜FAQ｜Contact Us｜中文《Petrochemical Safety and Environmental Protection Technology》 2017-05Add to Favorite Get Latest Update RESEARCH ON THE DIFFUSION AND ACCUMULATION RULE OF COLD VENT COMBUSTIBLE GAS AT OFFSHORE P