The zone model of gasification reaction of residual oil in gasifier with twin - fluid atomizer has been developed according to the test and measurement results of flow field in cold model gasifier. In this model

the components of recoil current: hydrogen

carbon monoxide and so on

take part in the combustion reaction and a reverse shift reaction takes place in the exit of the gasifier. The commercial - scale behavior for example

gas composition

life of the refractory and quench ring

is given reasonable explanation.