(With no burner this video. Plastics,Oil,Papers and others...)
You can see only vapor.You can't see smoke.
In this video the door is opened for shooting.
It actually have a double door. It is Japanese law.
I was not use a burner while photographing this.
This incinerator was incinerating plastics, oil, tire, paper scraps, wood and others.
Steam is visible because the furnace wall is a water cooling jacket.
There are also models with furnace walls of refractory construction.
This incinerator has basic performance of burning smokeless without a burner.
Our company manufactures various industrial machinery including animal cremation furnaces and incinerators.