煤在鍋爐中是如何燃燒的？有幾個步驟？                                                                                                                                       答：（1）干燥階段。                                                                                                                                                                      （2）揮發(fā)份析出及其燃燒階段。                                                                                                                                               （3）焦碳燃燒階段。                                                                                                                                                                              （4）燃盡階段。                                                                                                                                                                                  鶴壁鼎盛儀器儀表有限公司技術(shù)部發(fā)，檢驗、原文鏈接http://www.jianyanyiqi.com