某含硫天然气净化装置运行方案研究
发布时间：2018-11-15 10:28
【摘要】：随着我国节能减排和能源结构优化的推进,以及相关环保法律法规的完善,天然气净化得到了越来越多的重视和关注。净化装置的稳定、可靠及安全运行对保障下游用气至关重要,对已建天然气净化装置定期开展运行方案优化研究成为净化厂生产过程的必要环节。 某净化厂有天然气净化装置两套(单套设计处理量为375×104m3/d),因气田生产开发进入中期,天然气气质变化明显。为保证装置的平稳运行,需要对装置的运行方案和参数进行调整。本论文采用过程模拟软件,选择专用基础物性数据及热力学状态方程进行脱硫脱水工艺流程的模拟分析,并对装置的主要单体设备进行核算。同时,与原设计参数、现场实际运行参数进行数据对比分析,获得该净化装置生产运行的主要影响因素、处理极限以及在工艺方面存在的问题和瓶颈。在此基础上完成净化装置操作参数优化和工艺优化,获得装置平稳、可靠的优化运行方案。 研究结果表明：在保证装置稳定、安全运行前提下,该净化装置的天然气单套处理量能够达到412×104m3/d。优化调整后的合理运行参数为：采用40%(wt)MDEA溶液,原料气进气压力为5.15MPa,温度为15℃时,两套装置的溶液总循环量分别为76.6m3/h、86.5m3/h,其中进入第18层塔板的贫液量分别为67.91m3/h、76.68m3/h,进入第15层塔板的贫液量分别为7.55m3/h、8.52m3/h；合理的再生塔加热蒸汽用量在0.12-0.18t/m3MDEA溶液之间。针对脱水装置进行了参数分析,获得了脱水装置的较佳参数：TEG循环量为6.12m3/h,TEG进吸收塔温度为52℃左右,气提气用量为105.32m3/h左右。在工艺改进方面,提出了增加气/气换热器、调整MDEA循环泵、调整胺液空冷+水冷运行模式、部分时段停运汽提气等工艺优化和改进方案。通过主要单体设备核算的结果表明：三甘醇后冷器的换热面积不足,建议将原套管式换热器更换为列管式换热器,且换热面积不小于15.8m2。
[Abstract]:With the promotion of energy saving and emission reduction, energy structure optimization, and the improvement of related environmental laws and regulations, natural gas purification has been paid more and more attention. The stable, reliable and safe operation of the purification unit is very important to ensure the downstream gas consumption. It is necessary for the production process of the purification plant to carry out the optimization research on the operation scheme of the established natural gas purification plant regularly. There are two sets of natural gas purification units in a certain purification plant (a single set of designed treatment capacity is 375 脳 104m3/d), because the gas temperament changes obviously in the middle stage of gas field production and development. In order to ensure the smooth operation of the device, it is necessary to adjust the operation scheme and parameters of the device. In this paper, the process simulation software is used to analyze the desulphurization and dehydration process by selecting the special basic physical property data and thermodynamic equation of state, and to calculate the main unit equipment of the unit. At the same time, by comparing the data with the original design parameters and the actual operation parameters, the main factors affecting the production and operation of the purification unit, the treatment limit, the problems and bottlenecks in the process are obtained. On this basis, the operation parameters and process optimization of the purification unit are optimized, and a stable and reliable optimal operation scheme is obtained. The results show that the natural gas treatment capacity of the unit can reach 412 脳 10 ~ 4 m ~ (3 / d) under the condition of stable and safe operation. The optimal operation parameters are as follows: using 40% (wt) MDEA solution, the inlet pressure of raw gas is 5.15 MPA, the temperature is 15 鈩，
本文编号：2333042
[Abstract]:With the promotion of energy saving and emission reduction, energy structure optimization, and the improvement of related environmental laws and regulations, natural gas purification has been paid more and more attention. The stable, reliable and safe operation of the purification unit is very important to ensure the downstream gas consumption. It is necessary for the production process of the purification plant to carry out the optimization research on the operation scheme of the established natural gas purification plant regularly. There are two sets of natural gas purification units in a certain purification plant (a single set of designed treatment capacity is 375 脳 104m3/d), because the gas temperament changes obviously in the middle stage of gas field production and development. In order to ensure the smooth operation of the device, it is necessary to adjust the operation scheme and parameters of the device. In this paper, the process simulation software is used to analyze the desulphurization and dehydration process by selecting the special basic physical property data and thermodynamic equation of state, and to calculate the main unit equipment of the unit. At the same time, by comparing the data with the original design parameters and the actual operation parameters, the main factors affecting the production and operation of the purification unit, the treatment limit, the problems and bottlenecks in the process are obtained. On this basis, the operation parameters and process optimization of the purification unit are optimized, and a stable and reliable optimal operation scheme is obtained. The results show that the natural gas treatment capacity of the unit can reach 412 脳 10 ~ 4 m ~ (3 / d) under the condition of stable and safe operation. The optimal operation parameters are as follows: using 40% (wt) MDEA solution, the inlet pressure of raw gas is 5.15 MPA, the temperature is 15 鈩，
本文编号：2333042
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