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| 熔融态己内酰胺加氢的中试研究 |
| Pilot Study on Hydrogenation of Molten Caprolactam |
| 投稿时间：2018-12-13 |
| DOI：10.16018/j.cnki.cn32-1650/n.201902012 |
| 中文关键词: 己内酰胺 加氢 固定床 |
| 英文关键词: caprolactam hydrogenation fixed-bed |
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| 中文摘要: |
| 以己内酰胺精制工序中水萃取塔萃取得到的30%(质量分数)己内酰胺水溶液为原料，通过精馏、闪蒸制得浓度为99.5%(质量分数)的熔融态己内酰胺，经固定床加氢，在-99.9 kPa的压力下蒸馏得到产品己内酰胺。试验结果表明，熔融态己内酰胺加氢是可行的，产品己内酰胺各项指标除PAN略高(为5左右)，其他指标均达到了GB/T 13254—2017优等品水平。 |
| 英文摘要: |
| Taking 30%(mass fraction)of caprolactam aqueous solution extracted by water extraction column in caprolactam refining process as raw material, melting caprolactam with a concentration of 99. 5%(mass fraction)was obtained by distillation and flash distillation, and the product was distilled under the pressure of -99. 9kpa after hydrotreating in fixed bed. The experimental results show that the hydrogenation of molten caprolactam is feasible, and all the indexes of caprolactam of the product reach the level of GB/T 13254—2017 excellent products except PAN, which is slightly higher, reaching about 5. |
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