氨氮处理技术及影响因素

生物倍增废水处理工艺是必得普（北京）环保科技有限公司引进德国恩格拜公司技术在我厂污水处理上的应用,该技术在处理废水过程中与以往的工艺有较大的区别,此工艺在处理废水中的NH3-N,较SBR池的去除率高出60%之多,其基础理论也较SBR池有很多不同。本文就该技术对废水处理过程中的影响因素：温度、pH值、碳源、C/N/P比等进行了阐述。     

河南福源集团靠质量效益迎入世挑战

我国即将加入世界贸易组织。对我国企业来说,加入世界贸易组织,既有发展机遇,也有挑战。从某种意义上说,“入世”向国内企业提出了更新、更高的要求,关键是我们如何调整思路,适应新的发展趋势。     

基于数值模拟的锅炉冷风道流场均匀性优化

针对某330 MW燃油(气)电厂冷风道内流场严重不均匀,导致二次风温升小于设计值和风道出现明显振动的问题,采用数值模拟方法对风道内流场进行计算,通过在送风机出口不同标高、不同角度布置导流板,计算并比较了不同方案下流场的分布。结果表明:导流板安装标高为953 mm、角度为10°时,暖风器入口回流区减小至总通流面积的12.5%,风道内流场均匀性得到明显改善。     

AOGC废气焚烧炉在丙烯腈装置上的工业化应用

丙烯腈装置吸收塔放空尾气中非甲烷总烃和丙烯腈含量超标,为了保证排放合格,需要用焚烧的方法进行处理。而催化氧化处理法是一种节能、经济、环保的废气处理工艺,处理效果好,适合于丙烯腈装置的工业化生产需要。     

Improved sulfur-resistant ability on CO oxidation of Pd/Ce0.75Zr0.25O2 over Pd/CeO2-TiO2 and Pd/CeO2

The influence of sulfation on Pd/Ce0.75Zr0.25O2, Pd/Ce O2-Ti O2 and Pd/Ce O2 was investigated. Physical structure and chemical properties of different catalysts were characterized by N2 adsorption, X-ray diffraction(XRD), CO chemisorption, X-ray photoelectron spectroscopy(XPS), Fourier transform infrared spectroscopy(FT-IR) and X-ray fluorescence(XRF). After 10 h SO2 sulfation, it was found that the decrement on CO oxidation catalytic activity was limited on Pd/Ce0.75Zr0.25O2 compared to Pd/Ce O2-Ti O2 and Pd/Ce O2. It demonstrated that Pd/Ce0.75Zr0.25O2 was more sulfur resistant compared to the other two catalysts. After sulfur exposure, catalyst texture was not much influenced as shown by N2 adsorption and XRD, and surface Pd atoms were poisoned indicated by CO chemisorption results. Pd/Ce0.75Zr0.25O2 and Pd/Ce O2-Ti O2 exhibited less sulfur accumulation compared to Pd/Ce O2 in the sulfation process. Furthermore, XPS results clarified that surface sulfur amount, especially surface sulfates amount on the sulfated catalysts was more crucial for the deactivation in sulfur containing environment.