100万方天天然气三甘醇脱水装置工艺设计.doc

 毕业设计（论文） 题目 100万方/天天然气三甘醇脱水装置 工艺设计 学生姓名 学　号 教学院系 应用技术学院 专业年级 石油化工生产技术2008 指导教师 单　　位 西南石油大学 辅导教师 单　　位 完成日期 2011 年 06 月 05 日 摘要 天然气是一种烃类混合气体，主要由低分子饱和烃为主的烃类气体与少量非烃类气体组成。作为井流物的天然气总是被水所饱和的，为了达到商品天然气的管输水露点要求，必须将天然气中的水分脱除到一定的程度。天然气脱水属于天然气处理内容之一，常用的脱水方法有低温分离脱水、溶剂吸收法脱水和固体吸附法脱水等，其中溶剂吸收法脱水中的三甘醇脱水工艺应用最为普遍。。文章根据天然气站场的原料气条件和脱水要求，综合考虑工艺要求和经济影响，采用三甘醇溶剂吸收法脱水和汽提法再生工艺，借助于流程模拟软件HYSYS 进行模拟计算，通过对三甘醇脱水工艺参数的选择和相关设备尺寸的估算，对整个工艺中的吸收塔进行了物料衡算，对塔高、塔径进行了确定，对塔板各项参数的计算及相关设备的选型，设计出了符合原料气脱水要求及天然气脱水工艺规范的脱水工艺流程及装置。并通过对工艺方法和工艺参数的详细分析，验证了文章中天然气站场脱水工艺设计的合理性。 关键词：天然气 三甘醇脱水 再生 汽提 流程模拟 Abstract Natural gas is a kind of hydrocarbon gas mixture, mainly by the low molecular saturated hydrocarbons with small amounts of hydrocarbon gases mainly composed the hydrocarbon gases. As well flow content of natural gas is always water, in order to achieve saturation of commercial natural pipe-conveying water demand, must will dew point the moisture removal of natural gas to a certain extent. Natural gas dehydration belong to one of the natural gas processing content, the commonly used dehydration method has low temperature separation dehydration, solvent absorption dehydration and solid adsorption dehydration etc, which are three of solvent absorption dehydration dehydrate technique glycol are widely used. According to the gas station materials gas conditions and dehydration requirements, comprehensive consideration of the process requirement and economic impact, adopt three deg solvent absorption dehydration and steam latifah regeneration process, HYSYS by process simulation software to simulate calculation, through three deg dehydration process parameter selection and related equipment size for the whole process, estimated the absorption tower, the material balance of tower is high, tower diameter to determine the parameters, calculation of tower board and related equipment selection, design the feedgas dehydration conform with the requirements and gas dehydration process specification