A Variation Micro-Channel Cooling Type Surface Flame Low NOx Gas Device

Abstract

The invention discloses a variation micro-channel cooling type surface flame low NOx gas device, which comprises an upper and lower header, a variation structure water-cooling component, and a plurality of compact gas-cooling components constructed by the upper and lower headers and multiple groups of variation structure water cooling components arranged in parallel. Variation airflow microchannel, and water inlet and water outlet respectively connected with the upper and lower headers. The gas and air mixture flows through the dense variable airflow microchannel and then ignites and burns. However, due to the heat absorption of the variable structure water cooling component, the flame front of the gas flow burns at the low temperature surface of the variable airflow microchannel outlet and the surface of the variable structure water cooling component, significantly reducing the airflow combustion temperature , and then achieve low-temperature and low-NOx combustion; at the same time, the variation structure of the gas flow microchannel significantly promotes the disturbance of the flame gas flow, and is combined with the dense variation structure water-cooling component and the variation gas flow microchannel to effectively prevent tempering and defiring, thereby achieving low temperature At the same time, low NOx surface combustion eliminates local high temperature phenomenon and ensures stable, safe and efficient combustion.

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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