小型生活垃圾焚烧炉炉排结构分析

相对于大型焚烧炉使用的横置式机械炉排炉,在处理乡村生活垃圾中使用的小型焚烧炉多采用纵置式炉排炉,包括固定式炉排、翻转式炉排和旋转式炉排3种结构形式。这3种形式的炉排炉在功能上各有优缺点。在实际应用过程中,通常根据市场需求确定炉排的结构形式。

锅炉水冷炉排弯曲问题的探讨

介绍了水冷炉排结构及产生弯曲变形的原因,提出了解决的对策.

秸秆成型燃料锅炉的研制

根据秸秆成型燃料特性,通过设计和试验研制出适合于秸秆成型燃料燃烧的专用锅炉.锅炉采用双层炉排结构,具有消烟除尘作用,燃烧效率高,气体及固体不完全燃烧损失小,排烟中的烟尘含量,氮氧化物及SO2含量低,符合国家锅炉的污染物排放标准要求.

玉米秸秆成型燃料锅炉的设计与试验研究

根据玉米秸秆成型燃料特性 ,通过详细的热工计算及一定加工工艺研制出适合于玉米秸秆成型燃料燃烧的专用锅炉 ,这种锅炉采用双层炉排结构 ,具有消烟除尘作用。不但燃烧效率高 ,气体及固体不完全燃烧损失小 ,而且排烟中的烟尘质量浓度 ,氮氧化物及二氧化硫体积分数低 ,符合国家锅炉的污染物排放标准要求。

Sulfuric Acid Resistance of Concrete with Blast Furnace Slag Fine Aggregate

The deterioration of concrete by sulfuric acid attack in sewage environments has become a serious problem for many existing sewage structures. In this study, the properties of concrete using the blast furnace slag have been examined. It was shown that by using the blast furnace slag fine aggregate and blast furnace slag fine powder, it is possible to enhance the resistance of mortar and concrete to sulfuric acid. The resistance to sulfuric acid of mortar and concrete can be improved by using a blast-furnace slag fine aggregate in the total amount of fine aggregate. When mortar or concrete reacts to sulfuric acid, dihydrated gypsum film is formed around the particulate of the fine aggregate. This dihydrated gypsum film could retard the penetration of sulfuric acid, thus, improving the resistance to sulfuric acid. Furthermore, it has been proved that the relationship between the erosion depth by sulfuric acid attack and the product of immersion period and concentration of sulfuric acid can be expressed linearly. However, this relationship is dependent on the type of materials of concrete.