| 摘要: |
| 采用电渗析技术对普光天然气净化厂730 m3 N-甲基二乙醇胺(MDEA)溶液中热稳定盐(HSS)的脱除进行应用分析。结果 表明:在200对均相膜片、电压100 V的操作条件下,MDEA溶液中热稳定盐的质量分数由3%降至0.5%；Cl-质量浓度由1 300 mg/L降至200 mg/L；Na+质量浓度由4 200 mg/L降至700 mg/L；MDEA质量分数由41.47%降至40.42%。此外,电渗析脱盐技术具有高效、环保、无需酸液和碱液再生等优点,为MDEA溶液的净化提供了新的技术路线。 |
| 关键词: 电渗析 MDEA 热稳定盐 Cl- |
| DOI：10.3969/j.issn.1007-3426.2017.05.003 |
| 分类号:TE644 |
| 基金项目: |
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| Application of heat stable salts removal technology by electrodialysis in natural gas purification plant |
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Li Chao1, Wang Yongjun2, Lu George1, Zhan Guoren1, Xie Weimiao1
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1. Zhejiang Highnew Environmental Technology Co., Ltd, Hangzhou, Zhejiang, China;2. Sinopec Dazhou Natural Gas Purification Co. Ltd, Dazhou, Sichuan, China
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| Abstract: |
| The application of electrodialysis technology in removing the heat stable salts (HSS) in 730 m3 N-methyl diethanolamine (MDEA) solution of Puguang Natural Gas Purification Plant were analyzed. The results showed that in 200 pairs of homogeneous membrane and 100 V voltage operating conditions, the HSS mass fraction in the MDEA solution reduced from 3% to 0.5%, Cl- mass concentration reduced from 1 300 mg/L to 200 mg/L, Na+ mass concentration reduced from 4 200 mg/L to 700 mg/L, MDEA concentration reduced from 41.47% to 40.42%. In addition, the electrodialysis desalination technology has the advantages of high efficiency, environmental protection, and no acid and alkali regeneration, which offers a new technical route for the purification of MDEA solution. |
| Key words: electrodialysis MDEA heat stable salts Cl- |
