粉煤灰循环利用标准体系研究

通过构建粉煤灰循环利用标准体系,开展科学、系统和客观地评价和研究,积极引导和促进粉煤灰的资源化利用,推进资源节约型社会的发展,促进社会经济和资源环境的可持续发展。     

某风景名胜区悬索吊桥检测探讨

悬索吊桥的梁、塔、缆合理而简洁的构图,勾画出刚劲的纵梁,借助于气势壮观的弧形主缆,使大跨径一跃而过,表现出力线明快、简洁流畅的现代气息。一跃而过的悬索桥,可创造出宏伟规模的景观形象,形成该地域的标志性建筑和游览景点,因此悬索吊桥在风景名胜区较为常见。但好多景区桥梁存在由景区管理人员自行设计与施工,无正规、详细、完善的设计、施工、养护资料,这也在一定程度上存在安全隐患,对其进行定期检测就显得尤为重要。     

开阳化工50万t/a合成氨项目设计总结

简要介绍贵州开阳化工有限公司50万t/a合成氨项目的工艺技术的选择及设计情况,并总结了该项目的设计特色。     

泡沫相塔壁对泡沫分离牛血清蛋白分离性能的影响

In order to enhance foam drainage, the column with an inner sleeve in the foam phase was designed for studying effect of the column wall of foam phase on foam separation performances using bovine serum albumin(BSA) as the research system. The effects of the wall on the liquid holdup out of the top column, bubble size, enrichment and recovery percentage were investigated. The results indicated that the experimental column with the inner sleeve decreased the liquid holdup, accelerated the coarsening and coalescence of bubbles and increased enrichment of BSA compared the contrasted column without the inner sleeve. Under the conditions of the initial concentration 0.2 g?L-1 of BSA, air flow rate 400 ml?min-1, the experimental column achieved up to a 2.06 fold increase in enrichment compared to the contrasted column. The enrichment of BSA increased with the increase of inner sleeve length. Channel theoretical analysis showed that the ratio of exterior channels to interior channels increased with the increase of bubble diameter. So the experiment column obtained the better performances at the lower concentration and the lower air flow rate. The better performances obtained by experimental column showed that the drainage rate of plateau borders on wall was greater than that of plateau borders between bubbles. So the inner sleeve provided more plateau borders on wall and improved foam drainage.     

食品生产许可中包装饮用水原料水国家标准的实操应用

包装饮用水生产许可细则在许可审查和生产企业实际操作中对原料水质量、水质评价与监控等至关重要。本文探讨了水源的来源及质量要求、源水的水质评价与监控、水源的保护等方面,以及国家标准的要求、实际操作应用和存在问题。