Coal-based synthetic ammonia process flow
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I work in the field of producing synthetic ammonia from natural gas, and I’m not very familiar with the process of producing synthetic ammonia from coal. I’d like to understand the general workflow. I’ve heard that many coal gasification units now use pure oxygen; so where does the nitrogen required for producing synthetic ammonia come from? Very curious, please solve it!
Usually, it is preceded by liquid nitrogen washing, in which hydrogen and nitrogen are mixed in appropriate proportions in the liquid nitrogen washing device.