摘要
为了去除化工生产等过程中产生的酸雾废气,用粉煤灰、廉价易得的黏土类矿物及碱土金属化合物制成一种新型酸雾吸附剂。通过配方均匀设计方法设计出不同比例的吸附剂,探讨了5h的HCl的吸附量的变化,最终通过回归及规划求解得出最佳配方比例,并研究了空速对吸附性能的影响。结果表明,粉煤灰、沸石和消石灰的最佳配比为0.50∶0.35∶0.15(质量比),在文中所述条件下,其5h吸附的总吸附量为347.36mg/g,HCl的吸附量为215.72mg/g,且吸附效率保持在97%以上。该吸附剂在较高空速(5000h-1)的条件下吸附效率仍很高。
This paper takes it as its aim to present a new kind of adsorbent developed by its authors, which is expected to find its uses in removing the acid mist given off from chemical production, metallurgical process, paper making and the other kinds of production processes. The proposed newly developed acid mist is made of fly ash （a）, cheap natural minerals（h） and alkaline earth metals compound （c）. In order to get the desired acid mist, we have designed various experimental patterns of likely efficient testing elements and methods, such as, simplex-lattice design and simplex-centroid, etc. Since all the experimental points of simplex-lattice design and simplex-centroid design are not uniformly distributed in the experiment range and the boundary points, we began to turn our main efforts onto the uniform design, so as to overcome the shortcomings of current available methods. Practically speaking, our stress was mainly put on to test the change of the adsorption quantity of the adsorbent during 5 hours, and, then, to find the optimal proportion of the adsorption by using a special SPSS software. And, eventually, the impact of the space velocity on the adsorption capability of adsorbent has been studied. In order to obtain an ideal regression result, we tend to believe that it is of absolute necessity to do twice as many experiments as the number of the factors to be taken into consideration, or more reasonably speaking, 3 to 4 times as many experiments were to be done so that each factor could be categorized into 9 levels, as shown in Table UM9＊ . The results of our research have shown that the best proportion of a, b and c was 0.50, 0.35and 0.15. Under the conditions described in the text, the adsorbent should be able to adsorb 347.36 mg/g, including 215.72 mg/g of hydrogen chloride in 5 hours, with the adsorption efficiency up to 97 %. At the same time, the adsorbent is expected to be able to keep a high adsorption efficiency in 5 000 h^-1 space velocity. However, the acid mist removal process menion
出处
《安全与环境学报》
CAS
CSCD
2008年第3期37-39,共3页
Journal of Safety and Environment
基金
人才强校-中青年骨干教师资助计划项目(05005013200605)
关键词
环境工程
配方均匀设计
酸雾
吸附剂
environmental engineering
uniform design
acid mist
adsorbent
