Refractory ceramic fibres (RCF) are extensively used for the lining of Ethylene cracking furnaces in the petrochemical industries. Ceramic fibre materials do normally have a tendency of deterioration (de-vitrification, shrinkage, densification, reduced fibre resiliency, reduced thermal shock resistance, etc.) after a continuous exposure to high temperature for a long time. Premature deterioration of ceramic fibre module lining was noticed in a cracking furnace. The problem was unusual and was restricted to only one of the furnaces in the plant. The root-cause of the problem was investigated by evaluating the process condition of the furnace and analyzing the ceramic fibre samples. The results revealed that the presence of alkalis (Na2O & K2O) within furnace contributed faster deterioration of ceramic fibre lining. The detailed observations and results of ceramic fibre post-mortem analysis will be discussed.
机构:
Hefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R ChinaHefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R China
Liu, Chunjiao
Chen, Tao
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Hefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R ChinaHefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R China
Chen, Tao
Wu, Zhigang
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Hefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R ChinaHefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R China
Wu, Zhigang
Wang, Xinglei
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Qingdao NPA Ind Co Ltd, Qingdao, Shandong, Peoples R ChinaHefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R China
Wang, Xinglei
Luo, Heli
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Qingdao NPA Ind Co Ltd, Qingdao, Shandong, Peoples R ChinaHefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R China
Luo, Heli
Wang, Jiantao
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Qingdao NPA Ind Co Ltd, Qingdao, Shandong, Peoples R ChinaHefei Gen Machinery Res Inst CO Ltd, Natl Engn & Tech Res Ctr Pressure Vessels & Piping, China Petrochem Furnace Tube Qual Inspect & Evalua, Hefei, Anhui, Peoples R China