Slagging and scaling problems in gasification
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The addition of fluxes in Shell gasification increases the CaO content in the slag. In power generation systems, when the calcium oxide content in the ash and slag exceeds 10%, it leads to scaling in the wet slag disposal system; if this content reaches 25%, severe scaling occurs in such systems. Please share your insights on the scaling issues associated with Shell’s gasification slag disposal system
What type of valve would be suitable for that slag discharge? ?
I also want to know what kind of valve is needed for slag discharge, which manufacturers produce them, and what is the performance of these valves?
Is the poster referring to the slag discharge system below the gasification furnace? This scaling issue shouldn’t be a big problem, right?
Yes, it refers to the slag discharge system below the gasification furnace and the subsequent treatment system.
An inclined plate is installed in the ash discharge pipe to prevent ash residues from blocking the ash discharge opening. To prevent scaling, I think it’s still necessary to control the temperature of slag discharge ； Flow rate of the flush water ； It is related to the structure of the slag discharge ditch. The slag ditch is equipped with high-flow nozzles; increasing the force of the ash-flushing water can help reduce problems related to blockages in the slag discharge channels. Try to avoid dead corners in the slag discharge ditch. Wear-resistant bricks are installed on the inner side of the slag ditch.
7# Borrowing Doctrine [/b] Please share your views on the Borrowing Doctrine; let’s exchange ideas!