摘要
水循环回路的合理设计和布置对高温取热炉的安全运行具有重要意义。高温取热炉传热计算和水动力计算结果表明热负荷较低时,水循环容易发生停滞。水循环回路结构复杂容易导致并联管内的流量分配不均匀性较大。热负荷较高时,汽塞和流量脉动也会导致高温取热炉水循环可靠性下降。合理的运行可以防止高温取热炉水循环停滞。优化并联管组结构设计,并消除水循环回路中的可压缩容积,能够减少并联管组流量分配不均匀性,避免发生流量脉动,提高水循环的可靠性。
The optimal design and arrangement of water circulation system is important to the safe operation of the waste heat boiler.The heat transfer and hydrodynamic calculation results of the waste heat boiler show that water circulation is stagnant when the thermal load is very low.The flow distribution in the parallel tubes is very uneven when the water circulation loop is too complex.When the thermal load is high,steam lock in the collecting header and fluctuating flow in the parallel tubes make the water circulation safety of the waste heat boiler decrease.Optimal operation of the waste heat boiler is effective to prevent water circulation from stagnation.Favorable design of the water circulation system and eliminating compressible volume in it are useful to avoid unevenness of the flow distribution,steam lock and fluctuating flow in the parallel tubes,and it is effective to improve the water circulation safety of the waste heat boiler.
出处
《现代化工》
CAS
CSCD
北大核心
2006年第z1期284-288,294,共6页
Modern Chemical Industry
关键词
高温取热炉
水循环
水动力特性
waste heat boiler
water circulation
water hydrodynamic characteristics
