熊熊火焰的反光在满是烟垢的墙上跳动。
BD型锅炉除烟垢节能剂、化剂、加剂制造。
BD-type boilers, smoke candles - agent, a catalyst, additive manufacturing.
打开锅炉的前后烟箱门，检查密封垫片及烟垢，以决定是否更换和清理，同时检修浇注的耐火混凝土和密封石棉垫（绳）；
Open the smoke chamber of boiler; check the seal patch and smoke dirt to decide if it needs to clean up or replacement.
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