松南气田MDEA脱碳溶液质量影响因素及改善方法

Affecting Factors and Improvement Measures of the Quality of MDEA Decarburization Solution in Songnan Gas Field

为解决松南气田脱碳装置因MDEA溶液质量制约装置处理能力的问题,选取MDEA溶液贫、富液酸气负荷增量作为评价指标,基于现场运行参数和实际生产情况进行计算分析,对MDEA溶液脱碳性能进行综合评价;并通过分析引起MDEA溶液变质、污染的原因及其影响,有针对性地提出改善措施,通过从源头减少污染、加强过滤脱除机械杂质和有机杂质、利用电渗析和离子交换树脂原理脱除无机离子和热稳定盐,可有效改善MDEA溶液质量,提升脱碳装置处理能力,保障脱碳装置平稳运行,为日常生产运行中有效控制和管理MDEA溶液质量提供必要的技术依据。

In order to solve the problem that the processing capacity of the de-carbon unit is restricted due to the poor quality of MDEA solution in Songnan Gas field, the acid gas load increment of rich amine and lean amine solution is taken as a evaluation parameter. The decarburization performance of MDEA solution is comprehensively evaluated based on the field operation parameters and practical production conditions. The factors and influence of the deterioration and pollution of MDEA solution are analyzed and the corresponding improvement measures are put forward pointedly. By reducing pollution from the source and strengthening filtration, the content of mechanical impurities and organic pollution is lowered. By the means of electro dialysis technology and ion exchange resin technology, the inorganic ions and heat stable salts are removed effectively.By doing so,the quality of MDEA solution is effectively improved, and the process preformance of decarburization unit is increased, which can ensure the stable operation of the unit and provide necessary technical reference for effectively controlling and managing the quality of the MDEA solution in daily production and operation.