Method for preparing high purity ammonia
AssigneeWuhan Gao'an New Material Co., Ltd.
InventorsJianren Bao, Lingqi Zeng, Zehua Zhu
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Abstract
A method for preparing high purity ammonia is provided, which comprises the following three steps of: (1) obtaining the required feed gases (i.e., hydrogen-nitrogen gas mixture) by catalytic cracking ammonia; (2) purifying the hydrogen-nitrogen gas mixture; and (3) synthesizing high purity ammonia by using the hydrogen- nitrogen gas mixture with high purity. in the provided method, the obtained ammonia with undesired purity is fed back to an ammonia catalytic cracking unit. The whole production system is a closed system without any discharging of ammonia and thus is environment friendly. Each step of the method can reduce cost.
Claims9
An integrated three-step method for preparing high purity ammonia comprising catalytic cracking of ammonia, purification of hydrogen-nitrogen, and ammonia synthesis, comprising:
- step one, catalytic cracking ammonia to get a hydrogen-nitrogen gas mixture, that is, the feed gases;
- step two, purifying the hydrogen-nitrogen gas mixture;
- and
- step three, synthesizing high purity ammonia using the purified hydrogen-nitrogen gas mixture with high purity.
Dependencies are inferred from the claim text.