Issues related to the use of four-nozzle vaporization chambers
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Shell uses bottom slag discharge, so the space below the burner is the radiation slag discharge section; whereas the four-nozzle system employs bottom cooling for slag discharge, and the gasification chamber space above the burner is a dead space, which seems like a waste. At least it’s not as well-designed as Shell’s furnaces. What are everyone’s opinions?
Radiation slag discharge section? Where is this thing? The slag must be discharged into water at the end for rapid cooling. Although I personally am not a fan of four-nozzle vaporization, headspace is still necessary. The existence of a so-called dead zone or fluid-still zone serves to prevent excessive ash and slag from being splashed upward with the fluid and falling back, thereby affecting the spraying effect; it also helps to prevent the flame from getting too close to the top, which could cause the refractory bricks to be ablated.