Efficient low-pressure ammonia synthesis device

By combining the TSA system and two-stage reactor in the ammonia synthesis device, dynamic cyclic adsorption of ammonia gas is achieved, and the problems of low conversion rate and high energy consumption at high pressure and high temperature in traditional processes are solved, and the production of high-efficiency low-pressure synthetic ammonia is achieved, with significant energy-saving and environmentally friendly effects.

CN222684300UActive Publication Date: 2025-03-28CAPSO GREEN ENERGY TECH (NANJING) CO LTD
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Patent Information

Application Number
CN202420979298.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-08
Publication Date
2025-03-28
Estimated Expiration
2034-05-08

AI Technical Summary

Technical Problem

The traditional synthesis of ammonia is carried out under high temperature and high pressure, with low conversion rate and untimely ammonia separation, resulting in high energy consumption for subsequent cooling and separation, affecting economic benefits.

Method used

Design a high-efficiency low-pressure ammonia synthesis device, combining the TSA system and two-stage reactors, selectively adsorb ammonia gas through adsorbents, realizing a dynamic cycle process, reducing reaction pressure, improving conversion rate, and separating liquid ammonia at room temperature.

Benefits of technology

It effectively improves the conversion rate of synthetic ammonia, reduces the energy consumption of the cooling and separation stage, significantly reduces equipment costs and process energy consumption, and has the advantages of energy saving and environmental protection.

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Abstract

The utility model relates to an efficient low-pressure ammonia synthesis device which comprises a first-stage reactor, a second-stage reactor and a TSA (Total Swing Adsorption) system, the TSA system is formed by connecting three adsorption towers in parallel, a gas inlet of the TSA system passes through a shell pass of a second heat exchanger and then is connected with a discharge port of the first-stage reactor, a gas outlet of the TSA system passes through a tube pass of a third heat exchanger and then is connected with a feed port of the second-stage reactor, and a purge gas inlet and a jacket inlet of the TSA system are simultaneously connected with a discharge port of the second-stage reactor; a purge gas outlet of the third heat exchanger is communicated with a gas-liquid separator after passing through a tube pass of the first heat exchanger, and a jacket outlet of the third heat exchanger is connected with a gas inlet of the TSA system after passing through a shell pass of the third heat exchanger; a feed port of the first-stage reactor is connected with a feed gas input pipe after passing through a tube pass of the second heat exchanger and a shell pass of the first heat exchanger; a liquid outlet of the gas-liquid separator is connected with the liquid ammonia storage tank, and a gas outlet of the gas-liquid separator is connected with the discharge pipe. The utility model can increase the cooling separation temperature and reduce the energy consumption.
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