Waste heat recovery technology in the ammonia synthesis industry

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This post was last edited by Yu Re Yu Ya Fa Dian on 2017-5-15 at 18:18. The heat generated during the synthesis of ammonia and urea requires a large amount of circulating water to be used to remove this heat, in order to ensure that the production process can proceed efficiently and continuously. The temperature of this circulating water at the outlet is generally between 90 and 110°C. ORC screw expansion generator sets can be utilized to reduce the temperature of this waste heat from 90°C to 110°C to 75°C to 85°C. Furthermore, in ammonia synthesis and urea production process systems, many process steps require high-quality steam for heating; therefore, the waste heat from this steam condensate (also known as urea condensate) can also be utilized by ORC screw expansion generator sets. Energy conservation analysis: Part of the heat generated by the process is released into the ambient atmosphere through air coolers, while another part is carried away by the circulating cooling water, resulting in significant waste and causing thermal pollution to the environment. Currently, ORC screw expansion generator sets are used for recovery, generating high-quality electrical power and reducing the amount of electricity needed for internal use in the customer’s factory; this helps to **reduce the customer’s production costs and improve economic efficiency**.