Ammonia preparation system

By setting up an ammonia preparation system with a hydrolysis tank, heating components, and a catalytic tank, the problem of low urea hydrolysis efficiency has been solved, achieving efficient and low-cost ammonia preparation to meet the denitrification needs of coal-fired power plants and steel plants.

WO2026103221A1PCT designated stage Publication Date: 2026-05-21INNER MONGOLIA FENGDIAN ENERGY POWER GENERATION CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
INNER MONGOLIA FENGDIAN ENERGY POWER GENERATION CO LTD
Filing Date
2025-07-29
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing technologies for urea hydrolysis have low efficiency and long hydrolysis time, making it difficult to meet the needs of denitrification treatment of emissions from coal-fired power plants and steel plants.

Method used

An ammonia preparation system comprising a hydrolysis tank, a first heating component, a pressure regulating component, and a catalytic tank is employed. By combining heating, pressure regulation, and a catalyst, the hydrolysis efficiency of urea solution is improved.

Benefits of technology

It significantly improved the hydrolysis efficiency of urea solution, shortened the hydrolysis time, reduced costs, and improved the reaction efficiency of the ammonia preparation system.

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    Figure CN2025111123_21052026_PF_FP_ABST
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Abstract

The present invention relates to an ammonia preparation system. The ammonia preparation system comprises a hydrolysis tank, a first heating assembly, a pressure-regulating assembly, and a catalysis tank. The hydrolysis tank is adapted for the introduction of a urea solution, so that the urea solution is hydrolyzed into ammonia and carbon dioxide in the hydrolysis tank. The first heating assembly is arranged in the hydrolysis tank and is located at the bottom of the hydrolysis tank. The first heating assembly is configured for heating the hydrolysis tank, so that the temperature in the hydrolysis tank is 135 °C to 160 °C. The pressure-regulating assembly is in communication with the hydrolysis tank, so that the pressure in the hydrolysis tank is regulated by the pressure-regulating assembly to be between 0.35 MPa and 0.55 MPa. An ammonium phosphate catalyst is stored in the catalysis tank, and the catalysis tank is in communication with the hydrolysis tank, so that the ammonium phosphate catalyst in the catalysis tank flows into the hydrolysis tank to hydrolyze the urea solution. The ammonia preparation system of the present invention has the advantages of a simple structure, high ammonia preparation efficiency, etc.
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