发明名称 |
Purification of ammonia by distillation |
摘要 |
Crude ammonia is separated into a low boiler fraction, a high boiler fraction and an intermediate-boiling pure fraction by continuous fractional distillation in a distillation apparatus configured either as a dividing wall column or as a system of thermally coupled distillation columns. In the process of the present invention, the low boiler fraction is taken off at the top of the distillation apparatus. The intermediate-boiling pure fraction is obtained at a side offtake which is preferably provided with droplet precipitators. In addition, the gas loading of the distillation column is restricted so that the operating pressure is in the range from 2 to 30 bar and the F factor does not exceed 2.0 Pa0.5.
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申请公布号 |
US2001010286(A1) |
申请公布日期 |
2001.08.02 |
申请号 |
US20010767820 |
申请日期 |
2001.01.24 |
申请人 |
WOSTBROCK KARL-HEINZ;KAIBEL GERD;TRAGUT CHRISTIAN;ANKEN GABRIELE |
发明人 |
WOSTBROCK KARL-HEINZ;KAIBEL GERD;TRAGUT CHRISTIAN;ANKEN GABRIELE |
分类号 |
B01D3/14;C01C1/02;(IPC1-7):B01D3/42;C01C1/00 |
主分类号 |
B01D3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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