绪言1981年瑞士Aktiebolaqet Aroskraft Vasteras向苏尔寿提出了一项把现有燃油直流锅炉改成燃煤的研究任务。本文介绍了对此改造项目的考虑,以及改造后的运行经验和结果。用户对于Vasteras的直流锅炉改造的想法和要求表达十分清晰和明确,即: 燃煤时的最大锅炉出力; 对受压部件作最少的改动; 具有可燃用最大可能煤种范围的能力; Introduction In 1981, Aktiebolaqet Aroskraft Vasteras in Switzerland proposed to Sulzer the task of converting an existing fuel-fired once-through boiler into coal. This article describes considerations for this retrofit project, as well as operational experience and results after the retrofit. The user’s comments and requests for Vasteras’s DC Boiler retrofit are clear and clear: Maximum boiler output during coal firing; Minimal changes to pressure components; Ability to combust maximum possible range of coal;