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对于干背式燃油炉，其后烟箱隔墙长期承受温差交变载荷，造成倒塌。分析其原因，尽管存在设计上的缺陷，但最主要原因是锅炉运行问题。
For the dry-back type fuel burner, afterwards, the smoke box wall bear long-term alternating temperature and temperature load, causing collapse. Analysis of the reasons, despite the existence of design flaws, but the main reason is the boiler operation.