Comprehensive utilization method of ammonia synthesis catalyst waste material

Abstract

The invention discloses a comprehensive utilization method of an ammonia synthesis catalyst waste material. The comprehensive utilization method comprises following steps: the ammonia synthesis catalyst waste material is smashed into powder with a diameter of 100 to 300 micrometers; the powder is subjected to hydrochloric acid immersing, and filtering; filter residue is removed, excess zinc powder is added into an obtained filtrate, and an obtained mixture is stirred continuously; excess hydrochloric acid is added into the mixture, an obtained mixed material is subjected to filtering so as to obtain filter residue pure copper; and an obtained filtrate product is subjected to evaporation so as to obtain crystal substance zinc chloride. Recovery of copper and zinc after ammonia synthesis is realized via the comprehensive utilization method. The comprehensive utilization method is capable of realizing individual separation of valuable elements in ammonia synthesis such as copper and zinc, realizing further utilization of resources, and obtaining a large amount of signal valuable elements.

Description

technical field [0001] The invention relates to a method for recycling catalyst waste, in particular to a comprehensive utilization method for ammonia synthesis catalyst waste. Background technique [0002] Synthetic ammonia is a very large chemical industry with a huge annual output, so it needs to consume a considerable amount of catalyst every year. In theory, the quality and performance of the catalyst will not change during the chemical reaction process, and it can be used repeatedly forever. However, in actual production, the catalytic activity of the catalyst will be affected due to pollution, excessive temperature and other changes in the catalyst structure. Further impact on chemical production. At the same time, the catalyst for ammonia synthesis contains a large amount of valuable elements such as copper and zinc. If the catalyst that has lost its vitality is directly discarded, it will not only cause environmental pollution, but also waste a large amount of valu...

AI Technical Summary

Problems solved by technology

In theory, the quality and performance of the catalyst will not change during the chemical reaction process, and it can be used repeatedly forever. However, in actual production, the catalytic activity of the catalyst will be affected due to pollution, excessive temperature and other changes in the catalyst structure. Further impact on chemical production

At the same time, the catalyst for ammonia synthesis contains a large amount of valuable elements such as copper and zinc. If the catalyst that has lost its vitality is discarded directly, it will not only cause environmental pollution, but also waste a large amount of valuable elements.