Why the local wear of circulating fluidized bed boiler chamber is more serious

　　Q:Why is the local wear of circulating fluidized bed boiler chamber more serious?

　　A:1、Improper local structure or anti-wear measures.

　　2、Refractory and wear-resistant materials fall off.

　　3、Local tube screen verticality is not enough, resulting in long-term scouring of this part of the tube.

　　4、The tube welds, weld tumors left in the welding process and temporary lugs and other protrusions are not polished, resulting in changes in the media flow characteristics and serious wear in this area.

　　Q:What is the reason for serious wear at the junction of dense phase area and water-cooled wall?

　　A:The solid particles flowing down along the wall in the transition area move in the opposite direction to the solid materials moving upward in the furnace, thus producing a local change in the direction of flow and eventually scouring the water-cooled wall.

　　Q:Why does the uneven surface welding of the water-cooled wall cause wear and tear?

　　A:1, the water-cooled wall reducer at the top and bottom of the fins docking is not flat, there are tabs to disturb the flow phenomenon.

　　2、The site installation lifting hole is not polished smooth and flowing abnormally when the fins are patched and welded.

　　3, in the installation of the water-cooled wall screen after the lower fins separated, again welding process is poor, inspection found that the fin weld if like the eaves type is lighter wear, if like the convex table is more serious wear.

　　4, the water-cooled wall weld mouth is not polished round and smooth, resulting in scouring wear.