Ammonia combustion control system based on oxygen enrichment and hydrogen combustion supporting

Abstract

The invention relates to the technical field of ammonia combustion control, and discloses an ammonia combustion control system based on oxygen enrichment and hydrogen combustion supporting. The system comprises a first combustion area, a second combustion area, a combustor and a gas adjusting module. The first combustion area and the second combustion area are communicated with each other, the combustor is arranged in the first combustion area, and ammonia gas, hydrogen and oxygen can be introduced into the combustor and the second combustion area; when the combustor conducts combustion, the gas adjusting module adjusts the flow of ammonia gas, hydrogen gas and oxygen gas connected into the combustor and the second combustion area, rich combustion is conducted after the ammonia gas, the hydrogen gas and the oxygen gas are connected into the combustor, and lean combustion is conducted after the ammonia gas, the hydrogen gas, the oxygen gas and mixed gas generated by combustion in the first combustion area are connected into the second combustion area. According to the system, rich combustion and lean combustion are formed in sequence by adjusting the flow of ammonia gas, hydrogen and oxygen connected into the first combustion area and the second combustion area, the injection and combustion speed is high, temperature rise is fast, meanwhile, the heat effect of fuel gas is improved, energy is saved, and carbon emission is reduced.

Description

technical field [0001] The invention relates to the technical field of ammonia combustion control, in particular to an ammonia combustion control system based on oxygen-enriched and hydrogen-assisted combustion. Background technique [0002] At present, in the firing process of ceramic roller kiln, only oxygen and fuel participate in the reaction, while nitrogen only exists in the air as a diluent, which reduces the contact surface between oxygen and fuel, resulting in incomplete combustion, uneven heating, and prone to local burns. High temperature, which will help nitrogen react with oxygen at high temperature to generate a large amount of NOx, which will greatly reduce the probability of collision reaction between oxygen and fuel. The generated flue gas carries a large amount of heat out of the kiln body, causing a large amount of heat loss and reducing the thermal efficiency of the ceramic roller kiln. [0003] Now people are researching ammonia as a new energy source, ...

AI Technical Summary

Problems solved by technology

However, ammonia fuel has several challenges: first, its combustion velocity and calorific value are relatively low, and its combustion velocity is much lower than that of hydrogen, which has certain problems for industrial applications; second, its calorific value is relatively low, and its The calorific value is lower than other natural gas and hydrogen, and it is difficult to ignite, so it is not easy to ignite and achieve stable combustion

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