A numerical simulation study of a full-scale three-dimensional combustion has been conducted of a low-heat-value coal-bed gas burner along with a forecast of flow fields, temperature and constituent distribution at the outlet of the burner.

Technical state of non premixing type gas burner widely used in China was analyzed briefly.

This paper introduces the nonpremixed gas burners technology that was used in China at present and introduces the characteristic of the low-calorific value gas burners structure and technics and the effect of application.

In the light of design of gas burners a nd gas combustion,an analysis was ma de on reasons of overstandard fume temperature and low efficiency of No.

Three kinds of burners,for coal-bed gas of low calorific value,were numerically full scale 3-dimensionally simulated,and their hot state flow,as well as combustion particularities at the exit of different kinds of burner s,compared with one-another.