烟气二的氧化碳捕集装置中气流分布板的数值模拟.doc

毕 业 设 计(论文) ` 院 系 环境科学与工程学院 专业班级 环境工程专业0620班 学生姓名 王彭玄 指导教师 曾芳 基于AERMOD-城市区域大气污染扩散模拟分析与研究  烟气二氧化碳捕集装置中气流分布板的数值模拟 摘 要 气候变暖已经成为一个全球性的环境问题大量的C被认为是引起气候变暖的主要原因火力发电厂是排放CO的大户控制和减缓火力发电厂CO的排放可以从提高发电效率、促进能源替代以及直接从火力发电厂的烟气中回收CO三个方面进行，而后者是目前控制向大气中CO排放和减缓气候变暖的主要措施。 本文30度时效果最佳。 关键词：CO2脱除；气流分布板；数值模拟 CARBON DIOXIDE GAS TRAPS IN THE NUMERICAL SIMULATION OF AIR DISTRBUTION PLATE Abstract The global warming has become a global environmental problem. It is mainly due to the enhanced greenhouse effect produced by greenhouse gas emission into the atmosphere as a result of fossil fuels combustion and the forests cutting down in the land. Coal-fired power plant contributes more to the CO2 emission and is a concentrative CO2 emission sources. Improving power generating efficiency, accelerating the fuel substitution and capturing CO2 directly from the flue gas of the power plant can be taken into account to control land reduce CO2 emission to the atmosphere, with the last being the most important method to control CO2 emission nowadays. This article describes various types of chemical absorption method’s process characteristics, scope, status and economy, and ultimately determine the Removal of carbon dioxide with ammonia. FLUENT software is used to simulate the absorber，Through the simulation of the absorber, Clear the influence of air distribution plate’s presence or absence and the point of it to the tower flow and Decarburization efficiency, And draw appropriate maps and speed of cloud, Analysis and comparison of the simulation results, And recommend improvements. Simulation results show that, The presence of air distribution plate can significantly improve the flow distribution, Make it more uniform, Thereby increasing the efficiency of decarburization. Further simulations show that the air distribution plate in 30 degrees is best. Keywords: Carbon dioxide removal； Air distribution plate； Simulation 目 录 摘 要 I Abstract II 1．绪论 1 1.1 课题背景 1 1.2 国内外二氧化碳排放现状及趋势