Green and efficient ammonia fuel combustion system and method

Abstract

A green and efficient ammonia fuel combustion system comprises an engine, the engine is provided with four inlets and a waste gas outlet, the four inlets are connected with a methane storage tank, an ammonia storage tank, a hydrogen storage device and air correspondingly, the waste gas outlet is connected with an inlet of a waste gas heat exchange device, the waste gas heat exchange device is provided with three outlets, two of the outlets are connected with a methane high-temperature cracking device and an ammonia decomposition device correspondingly to provide heat energy for the methane high-temperature cracking device and the ammonia decomposition device, an inlet of the methane cracking device is connected with the methane storage tank, an outlet of the methane cracking device is connected with a second separator, mixed gas obtained by methane cracking is separated into methane and hydrogen in the second separator, and a hydrogen outlet is connected with the hydrogen storage device. An inlet of the ammonia decomposition device is connected with the ammonia storage tank, an outlet of the ammonia decomposition device is connected with a third separator, mixed gas obtained through ammonia decomposition is separated into ammonia gas and hydrogen in the third separator, and a hydrogen outlet is connected with the hydrogen storage device. According to the green and efficient ammonia fuel combustion system, pollutant discharge can be controlled at a low level, and meanwhile the problem of poor ignitability of ammonia serving as fuel is solved.

Description

technical field [0001] The invention relates to a fuel combustion system, in particular to a green and efficient ammonia fuel combustion system. Background technique [0002] Distributed energy is one of the efficient measures to achieve energy conservation and emission reduction. Utilize distributed energy, in terms of environmental protection, disperse and recycle part of the pollution, and strive to achieve the goal of moderate emissions; arrange in fragments for energy transmission and utilization, reduce the loss of long-distance transmission energy, and effectively improve energy efficiency. Take advantage of security and flexibility. [0003] Faced with the gradual intensification of the greenhouse effect, new clean fuels are a research hotspot in the scientific community today. Ammonia is a promising fuel. On the one hand, ammonia, as a hydrogen-rich substance, is an ideal carrier for hydrogen energy; on the other hand, ammonia combustion can achieve zero carbon em...

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Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a green and efficient ammonia fuel combustion system. The present invention selects methane and hydrogen as combustion aids to improve the combustion process. There are two operating modes: methane / ammonia / Air and hydrogen / ammonia / air, from ammonia production to ammonia utilization, tail gas emission recovery, etc., on the one hand, provide a new utilization method of ammonia fuel, promote energy saving and emission reduction, and solve the problem of large pollution existing in existing fossil fuels On the other hand, aiming at the combustion characteristics of ammonia, adding a combustion enhancer to improve it solves the problem of its poor ignitability

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