Variation microchannel cooling type surface flame low NOx gas device

Abstract

The invention discloses a variation microchannel cooling type surface flame low NOx gas device. The variation microchannel cooling type surface flame low NOx gas device comprises an upper header, a lower header, variation structure water cooling components, a plurality of compact variation airflow microchannels constructed by the upper header, the lower header and the multiple groups of parallel variation structure water cooling components, a water inlet and a water outlet, wherein the water inlet and the water outlet are connected with the upper header and the lower header separately. Gas andair mixed airflow is ignited and combusted after flowing through the compact variation airflow microchannels, but because the variation structure water cooling components absorb heat, the low-temperature surface combustion of the airflow flame front at outlets of the variation airflow microchannels and the surfaces of the variation structure water cooling components is realized, the airflow combustion temperature is obviously reduced, and the low-temperature low-NOx combustion is further realized; meanwhile, the variation structures of the airflow microchannels remarkably promote disturbanceof flame air flow, and are combined with the compact variation structure water cooling components and the variation airflow microchannels, so that backfire and deflagration are effectively prevented,low-temperature and low-NOx surface combustion is realized, meanwhile, the local high-temperature phenomenon is eliminated, and combustion stability, safety and high efficiency are guaranteed.

Description

technical field [0001] The invention relates to the technical field of combustion and utilization of gas furnaces and industrial low calorific value gas, in particular to a variable microchannel cooling type surface flame low NOx gas device. Background technique [0002] As a major energy producer and consumer, my country has listed green and low-carbon development as one of its core development strategies in order to protect the ecological environment. Therefore, reducing pollutants such as particulate matter, sulfur oxides, and nitrogen oxides produced during energy combustion has become the focus of current research. my country has also introduced a series of policies to control the NOx emission value of gas-fired boilers. GB13271-2014 "Emission Standard of Air Pollutants for Boilers" stipulates that the NOx emission limit of industrial gas-fired boilers in use in my country is 400mg / m 3 , the new gas boiler NOx emission limit is 200mg / m 3 , the NOx emission limit of ga...

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Problems solved by technology

At this stage, although the surface combustion technology of wire mesh has reduced the temperature of the gas flame an

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