摘要
喷淋塔是湿法烟气脱硫工艺中应用最广泛的塔型,雾化系统是喷淋塔的关键技术,影响脱硫传质过程。为了较为全面地研究喷淋塔雾化性能,建立了试验台,以压力作为间接指标,采用湿法脱硫中常用的旋流喷嘴和螺旋喷嘴,对单层/双层旋流喷嘴布置、单层/双层螺旋喷嘴布置、旋流喷嘴和螺旋喷嘴组合布置的喷淋塔雾化性能进行了比较。试验表明,雾化系统对塔内气流分布的作用不甚明显,相比之下,上旋流下螺旋的组合布置方式既可满足工艺气液比的要求,断面上雾化粒径分布的均匀性及雾滴在喷淋段分散的均匀性又较好,可作为塔内雾化系统优选布置方式。
The spray tower represents a tower type most widely used in a wet-method flue gas desulfuration process and its atomization system pertains to a key technology of the spray tower,which influences the desulfuration mass transfer process.To conduct a more comprehensive study of the atomization performance of the spray tower,a test stand was set up.With the pressure serving as an indirect index,both the swirl and spiral nozzles commonly used in the wet-method desulfuration process were adopted.A comparison of the atomization performance of the spray tower has been conducted,using the following layouts,namely,single-layer/double-layer swirl nozzle arrangement,single-layer/double-layer spiral nozzle arrangement,swirl and spiral nozzle combined arrangement.The test results show that the role played by the atomization system on the gas flow distribution in the tower is not quite evident.By comparison,the upper swirl and lower spiral nozzle combined arrangement mode is the preferred choice for the atomization system in the tower,which can meet the requirements both for the process liquid-gas ratio and achieve a relatively good uniformity of the atomized particle distribution on the section and mist droplet dispersion on the spray section.
出处
《热能动力工程》
CAS
CSCD
北大核心
2008年第3期303-305,共3页
Journal of Engineering for Thermal Energy and Power
基金
国家高技术研究发展计划(863)基金资助项目(2001AA642020)
关键词
烟气脱硫
喷淋塔
雾化性能
断面压力分布
flue gas desulfuration,spray tower,atomization performance,sectional pressure distribution
