CAJ | 학술논문

针对近年来天然气中酸性组分含量升高导致的产品气气质下降、设备故障频繁等问题，利用Aspen HYSYS软件对MDEA溶液循环量提高后的脱硫系统进行了流程模拟。结果表明，当原料气中酸性组分 CO2和 H2S的体积分数分别由5．280％和0．028％增至6．280％和0．052％时，为了保证产品气符合国家标准，需将系统中的MDEA溶液循环量由63．25 m 3/h逐渐提高至102．85 m3/h。使用Tray Rating、HTRI Xchanger Suite软件对不同MDEA溶液循环量下的塔器和换热器等重要设备进行了一系列优化。经计算，胺液吸收塔和再生塔的流体力学性能均符合要求；胺液贫富液换热器在MDEA溶液循环量提高时可串联1台同型号换热器，同时更换换热管规格，以满足系统需要并缓解堵塞；优化后的二级闪蒸装置能够较大程度地缓解装置频繁波动的情况，而在其入口处加装高效波纹板除沫器则可有效避免系统发泡。
침대근년래천연기중산성조분함량승고도치적산품기기질하강、설비고장빈번등문제，이용Aspen HYSYS연건대MDEA용액순배량제고후적탈류계통진행료류정모의。결과표명，당원료기중산성조분 CO2화 H2S적체적분수분별유5．280％화0．028％증지6．280％화0．052％시，위료보증산품기부합국가표준，수장계통중적MDEA용액순배량유63．25 m 3/h축점제고지102．85 m3/h。사용Tray Rating、HTRI Xchanger Suite연건대불동MDEA용액순배량하적탑기화환열기등중요설비진행료일계렬우화。경계산，알액흡수탑화재생탑적류체역학성능균부합요구；알액빈부액환열기재MDEA용액순배량제고시가천련1태동형호환열기，동시경환환열관규격，이만족계통수요병완해도새；우화후적이급섬증장치능구교대정도지완해장치빈번파동적정황，이재기입구처가장고효파문판제말기칙가유효피면계통발포。
Aiming at the inferior product gas quality and frequent equipment troubles due to the increase of acidic components content in natural gas in recent years ,the process of desulphur-ization system after the increase of MDEA solution circulation flow rate was simulated by Aspen HYSYS software .The simulation result demonstrated that it was necessary to increase MDEA solution volume flow rate gradually from 63 .25 m3/h to 102 .85 m3/h to satisfy national stand-ards when the volume fraction of CO2 and H2S was increased from 5 .280% and 0 .028% to 6 .280% and 0 .052% respectively .Key facilities were implemented a series of optimization by the professional softwares of FRI-Tray Rating ,and HTRI Xchanger Suite ,etc .The fluid mechanics performance of amine absorber and regenerator were qualified for different volume flow rates of MDEA solution after calculation .When the volume flow rates increased ,it was feasible schemes to add the same model of lean/rich amine heat exchanger in series and simultaneously change the specification of heat exchange tube to meet the demand and resolve block .Optimized two-level flash device could greatly relieve frequent fluctuation and fixing the high-efficiency corrugated plate demister at inlet could avoid system foaming .