Abstract: The implementation procedure of boiler cold start without oil was introduced. The problems of plasma ignition system and MPS190 coal pulverizing system with medium speed mill occurred in cold state and hot state trail running were analyzed, and relevant treatment methods were given. By the combustion adjustment with load, the highefficient, safe and stable operation of the boiler during trail running period was realized. In whole startup debugging period, some key links were realized, which included the cold start and hot start without oil, the pipe blowing, the load rejecting, the combustion stabilizing in low load and the shutdown with variable parameters; a great amount of fuel oil was saved; and favorable economic and social benefits were obtained.
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Key words: plasma ignition technology, MPS coal pulverizing system, cold state trail running, start-up debugging, optimized combustion adjustment