万州作业区天然气脱水工艺中影响三甘醇寿命因素及对策研究

发布时间：2018-08-19 12:40

【摘要】：重庆气矿万州作业区生产的原料气为含硫天然气,由于作业区气田均处于中后期开采,上游均为增压泡排采气工艺,气体中的药剂、油污、气田水等杂质进入脱水装置,严重影响了三甘醇的使用寿命。同时由于增压装置越来越多,气流脉动对三甘醇脱水的平稳运行也产生了严重影响。在这种条件下,造成了万州作业区脱水装置运行费用居高不下,其中三甘醇消耗费用占了总能耗费用的49%以上。为了有效的解决三甘醇脱水工艺中三甘醇的消耗和变质问题,有必要对影响三甘醇寿命因素进行系统研究,在此基础上提出延长三甘醇使用寿命的对策。本论文根据脱水工艺处理的天然气气质不同,有针对性的选择了高含硫的凉风站和低含硫的复1井站三甘醇天然气脱水工艺为研究对象,通过自主设计的三甘醇脱水实验装置,模拟运行的三甘醇脱水工艺,研究了含水量、无机盐、有机物、酸性气体、Fe3+浓度、表面活性剂、固体杂质等因素对三甘醇性质的影响。从三甘醇贫液的脱水性、三甘醇富液的再生性以及三甘醇富液的腐蚀性、发泡、消泡性能等方面分析了各因素对三甘醇性质的影响规律。为进一步研究各因素对三甘醇变质的作用,根据影响三甘醇变质因素的研究,从自身性质、工艺方法、气体气质等方面分析了不同条件下三甘醇的变质机理。基于影响三甘醇变质因素的研究以及对三甘醇变质机理的研究,针对不同生产条件下影响三甘醇寿命的主要因素以及变质机理,从提高原料气洁净度、优化三甘醇脱水装置运行参数、消除三甘醇中杂质等方面提出了延长三甘醇使用寿命的措施。
[Abstract]:The raw gas produced in Wanzhou operation area of Chongqing gas mine is sulfur-bearing natural gas. Because the gas fields in the operation area are all in the middle and late stage of exploitation, the upstream gas recovery process is pressurized bubble, and the impurities in the gas, such as medicament, oil pollution, gas field water, etc., enter the dehydration device. The service life of triethylene glycol is seriously affected. At the same time, the steady operation of triethylene glycol dehydration is seriously affected by the gas pulsation due to the increasing number of supercharging devices. Under this condition, the operating cost of dehydration unit in Wanzhou operation area is high, and the consumption cost of triethylene glycol accounts for more than 49% of the total energy consumption cost. In order to effectively solve the problem of consumption and deterioration of triethylene glycol in dehydration process, it is necessary to systematically study the factors affecting the life of triethylene glycol, and put forward countermeasures to prolong the service life of triethylene glycol. In this paper, according to the nature of natural gas treated by dehydration process, the natural gas dehydration process of Liangfeng station with high sulfur content and that of Fu-1 well station with low sulfur content is selected as the research object, and the self-designed triethylene glycol dehydration experimental device is adopted. The effects of water content, inorganic salt, organic matter, concentration of acid gas Fe3, surfactant and solid impurity on the properties of triethylene glycol were studied. The effects of various factors on the properties of triethylene glycol were analyzed from the aspects of dehydration of triethylene glycol poor solution, regeneration of rich liquid of triethylene glycol and corrosion, foaming and defoaming properties of rich liquid of triethylene glycol. In order to further study the effect of various factors on the metamorphism of triethylene glycol, the metamorphic mechanism of triethylene glycol under different conditions was analyzed in terms of its own properties, process methods and gas temperament according to the study of the factors affecting the metamorphism of triethylene glycol. Based on the study of the factors affecting the metamorphism of triethylene glycol and the study of the modification mechanism of triethylene glycol, aiming at the main factors affecting the life of triethylene glycol under different production conditions and the modification mechanism, the cleanliness of raw gas was improved. The measures of prolonging the service life of triethylene glycol were put forward from the aspects of optimizing the operation parameters and eliminating impurities in triethylene glycol dehydration unit.
【学位授予单位】：重庆科技学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE644

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