高温环境下水冷炉排的散热管道排布方式研究

Arrangement of the heat dissipation pipes of a water-cooled grate in a high-temperature environment

为避免高热值垃圾焚烧时可能导致的炉排受热烧损现象,本文以某型号水冷炉排为研究对象,在管道截面相同的条件下,仿真研究了3种内部管道排布方式(折线型、波浪型、回型)在4种不同垃圾热值及4种不同冷却水流速条件下的散热性能。结果表明:折线型水冷炉排适用于垃圾热值变化范围小的垃圾焚烧炉,而波浪型水冷炉排适用于垃圾热值变化范围大的垃圾焚烧炉,对高温环境下强制水冷炉排的设计具有一定参考价值。

To avoid the possible thermal burnout of the grate during the incineration of high-calorific-value waste,the heat dissipation performance of three types of internal piping arrangement(folding type,wave type,and return type)under four different waste calorific values and four different cooling water flow rates was simulated and stud-ied.A certain type of water-cooled grate is taken as the research object,with the same piping cross-section.The results show that the bending-type water-cooled grate is suitable for waste incinerators with a small variation of the waste calorific value,whereas the wave-type water-cooled grate is suitable for waste incinerators with a large varia-tion of the waste calorific value.It has some reference value for the design of forced water-cooled grates in high-temperature environments.