A combined internal combustion type low temperature and low NOx natural gas burner and combustion method

Abstract

The invention relates to a combined internal combustion low-temperature low-NOx natural gas combustor and a combusting method. The combined internal combustion low-temperature low-NOx natural gas combustor comprises a plurality of sub burners, an internal combustion cavity and flame collectors; the internal combustion cavity is horizontally formed, the multiple sub burners are evenly formed in thehalf circumference of one end of the internal combustion cavity, and a combustion product outlet protruding outwards is formed in the other end of the internal combustion cavity; and outlets of the sub burners are in sealed connection with the corresponding flame collectors arranged in the internal combustion cavity correspondingly, a plurality of cooling air inlets are evenly formed in the position, close to one ends of the sub burners, of the outer side circumference of the internal combustion cavity, and the cooling air inlets are connected with cooling air pipelines correspondingly. According to the combined internal combustion low-temperature low-NOx natural gas combustor, aiming at solving the problems that in the prior art, when natural gas is combusted, the combustion temperatureis high, and the NOx emission amount is high, the combustion temperature is controlled to be lower than 1250 DEG C, low NOx emission is achieved, thus clean combustion of the natural gas is achieved,and the combined internal combustion low-temperature low-NOx natural gas combustor is especially suitable for occasions where the length of a combustion chamber is limited, or a plurality of combustion systems are adopted.

Description

technical field [0001] The invention relates to the field of combustion technology, in particular to a combined internal combustion type low-temperature and low-NOx natural gas burner and a combustion method. Background technique [0002] Environmental pollution and energy utilization have seriously threatened the survival and development of human beings all over the world. The pollution of pollutants in fuel combustion products to the ecological environment has increasingly attracted people's close attention. Reducing the emission of pollutants from combustion devices has become a combustion technology. An important task of research. [0003] The NOx generated during the fuel combustion process is divided into three types according to the generation path and source: thermal NOx, rapid NOx, and fuel NOx. During the combustion process of natural gas, the NOx generation is mainly thermal, and the amount of NOx generated during the combustion process has an exponential growth ...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a combined internal combustion type low-temperature low-NOx natural gas burner and a combustion method. Aiming at the problems of high combustion temperature and high NOx emission when burning natural gas in the prior art, the combustion temperature is controlled to be lower than 1250°C, which overcomes the existing It has the disadvantage of high combustion temperature of the internal combustion burner, and realizes low NOx emission, so as to realize clean combustion of natural gas, especially suitable for occasions where the length of the combustion chamber is limited or multiple combustion systems are used

Images