Ammonia carbon-free synthesis system by means of nuclear energy and method thereof

Abstract

The invention discloses an ammonia carbon-free synthesis system by means of nuclear energy and a method thereof .The system comprises a high-temperature gas cooled reactor, a steam generator, an overheater, a solid oxide electrolytic cell, a Stirling hot air engine, a heater, a mixer, a deep cooling air separation unit, a low-pressure compressor, an intercooler, a high-pressure compressor, a preheater, an ammonia synthesis tower, an ammonia condenser, an ammonia separator, a water supply pipeline and an air pipeline .The nuclear energy serves as fuel, air and water serve as raw materials, and the ammonia synthesis system which does not depend on fossil energy or generate pollutants is achieved jointly through the high-temperature gas cooled reactor in cooperation with a steam electrolysis method and a deep cooling air separation method .Waste heat of high-temperature hydrogen generated through the steam electrolysis method is used for driving the Stirling hot air engine to drive the compressors to act, low-temperature nitrogen of the deep cooling air separation unit serves as a cooling medium of the ammonia condenser and the intercooler, the advantages of comprehensively utilizing energy, saving water, simplifying the technological process and the like are achieved, and therefore high economic and environment-friendly value and good application prospects are achieved .

Description

technical field [0001] The invention belongs to the technical fields of nuclear energy application and chemical industry, and in particular relates to a carbon-free ammonia synthesis system utilizing nuclear energy and a method thereof. Background technique [0002] Synthetic ammonia is the foundation of the nitrogen fertilizer industry, and is also the basic raw material of the inorganic and organic chemical industries. It can be used to produce dyes, explosives, pharmaceuticals, synthetic fibers and synthetic resins, etc. Therefore, synthetic ammonia technology plays a central role in the development of today's chemical industry . At present, the production of synthetic ammonia in my country ranks first in the world, and the technology of producing synthetic ammonia from coke, anthracite and natural gas has been mastered, forming a unique production pattern in which coal, petroleum and natural gas coexist. The main trends in the development of ammonia synthesis technology...

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Problems solved by technology

[0003] Reducing the energy consumption and process complexity of ammonia synthesis has always been a major issue facing the ammonia industry. At present, the synthesis and separation processes of the ammonia industry are divided into compression, ammonia synthesis, condensation and separation, etc. The compression process requires a lot of power consumption. The compressor is generally composed of The steam power system driven by the waste heat boiler for waste heat recovery increases the complexity of the process; the condensation and separation process first passes through the water cooler and then through the secondary ammonia cooler to reach the condensation temperature of ammonia gas, which involves more cooling equipment and requires Consumes a lot of cooling water

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