| 摘要: |
| 三甘醇脱水工艺是天然气工业中应用最早也最为普遍的一种方法。通常,采用气提再生对三甘醇贫液进行提浓,使得外输干气水露点达到环境要求。目前,由于三甘醇脱水工艺中再生废气采用直接排放的方式,当天然气中含有BTEX组分时,对环境与生产人员造成极大的危害。通过HYSYS模拟,论证了三甘醇脱水典型工艺流程,再生废气经过冷凝后回收用作气提气的改进工艺与DRIZO脱水工艺。分析得出,DRIZO脱水工艺脱水效果好,能耗低且能显著降低BTEX的排放,有效解决了再生废气的污染及三甘醇损失等问题,具有较高的推广价值。 |
| 关键词: 气提 再生废气 回收利用 直接排放 HYSYS 模拟 |
| DOI：10.3969/j.issn.1007-3426.2018.02.006 |
| 分类号: |
| 基金项目: |
|
| Recovery and utilization of regenerated waste gas containing BTEX from TEG dehydration unit |
|
Shan Yongkang1, Jiang Hong1, Pu Zhibo2, He Guangmang3
|
|
1. College of Petroleum and Natural Gas Engineering, Southwest Petroleum University, Chengdu, Sichuan, China;2. Central Sichuan Oil and Gas District, PetroChina Southwest Oil & Gasfield Company, Suining, Sichuan, China;3. Tarim Oilfield Company Kuqa Oil and Gas Development Department Keshen Operation Area, Kuerle, Xinjiang, China
|
| Abstract: |
| TEG dehydration process is the earliest application process in natural gas industry. It is also a common method. Usually the TEG lean liquid was enriched by stripping regeneration to make the water dew point of transportation dry gas meeting the environmental requirements. Currently, since the generated exhaust gas of TEG dehydration process was discharged directly, when the natural gas contain BTEX components, it would do great harm to the environment and the operation staff. The typical process of triethylene glycol dehydration was demonstrated by HYSYS simulation, and the regenerated waste gas was condensed and recycled for stripping gas and DRIZO dehydration process. The analysis results showed that DRIZO dehydration process had good dehydration effect, low energy consumption and BTEX emissions. It provided effective solutions to the pollution of regenerated waste gas, the loss of triethylene and other issues which had a high popularizing value. |
| Key words: stripping regenerated waste gas recycle and reuse direct discharge HYSYS simulation |
