CAJ | 학술논문

采用自主设计的鼓泡吸收装置,以乙二胺溶液为脱硫剂,研究了盐酸、硫酸、磷酸、柠檬酸和硼酸作为添加剂对湿法烟气脱硫的影响.实验结果表明,加入酸添加剂后,提高了吸收液的有效吸收容量.其中,乙二胺/硼酸和乙二胺/磷酸的有效吸收容量较高,分别为266mg/L和269mg/L,pH值缓冲效果最佳.同时发现,乙二胺溶液的脱硫率随时间的延长而迅速减小;加入添加剂后,吸收液能在较长时间内保持较高脱硫率.10次吸收-解吸循环实验结果显示,乙二胺/硼酸、乙二胺/磷酸和乙二胺/柠檬酸的平均脱硫率均达99%,SO_2解吸顺序为乙二胺/硼酸＞乙二胺/磷酸＞乙二胺/柠檬酸.硼酸和磷酸可强化乙二胺湿法烟气脱硫过程,是具有开发前景的添加剂.
채용자주설계적고포흡수장치,이을이알용액위탈류제,연구료염산、류산、린산、저몽산화붕산작위첨가제대습법연기탈류적영향.실험결과표명,가입산첨가제후,제고료흡수액적유효흡수용량.기중,을이알/붕산화을이알/린산적유효흡수용량교고,분별위266mg/L화269mg/L,pH치완충효과최가.동시발현,을이알용액적탈류솔수시간적연장이신속감소;가입첨가제후,흡수액능재교장시간내보지교고탈류솔.10차흡수-해흡순배실험결과현시,을이알/붕산、을이알/린산화을이알/저몽산적평균탈류솔균체99%,SO_2해흡순서위을이알/붕산＞을이알/린산＞을이알/저몽산.붕산화린산가강화을이알습법연기탈류과정,시구유개발전경적첨가제.
Experiments were conducted in a small self-designed bubbling apparatus to investigate the effect of acid additives including hydrochloric acid, sulfuric acid, phosphoric acid, citric acid and boric acid on the wet flue gas desulfurization by ethylenediamine. The results show that the acid additives can observably increase the available absorption capacity of the absorbents. The available absorption capacity of ethylenediamine/boric acid (266mg/L) and ethylenediamine/phosphoric acid (269mg/L) are higher, and have good pH buffering ability. It is found that the desulfurization efficiency of ethylenediamine sharply decreases with time. After adding acid additives, a higher desulfurization efficiency can be maintained for a long time. The recovery of SO_2 in ethylenediamine/boric acid, ethylenediamine/phosphoric acid and ethylenediamine/citric acid was studied. All the mean SO_2 removal efficiency of the three absorbents in ten cycles can reach 99%, and the SO_2 desorption efficiency follows the order: ethylenediamine/boric acid＞ethylenediamine/phosphoric acid＞ethylenediamine/citric acid. According to the experimental results, boric acid and phosphoric acid seem to be the most promising additives.