聚苯硫醚(PPS)掺炭纤维协同飞灰脱除气态汞的实验研究

利用汞蒸气发生器产生的单质汞和烟气中的一些主要气体成分模拟烟气条件,在固定床实验系统上分别进行了燃煤飞灰、聚苯硫醚(PPS)掺炭纤维及燃煤飞灰和PPS掺炭纤维联合对燃煤烟气中Hg0的脱除实验研究.结果表明:燃煤飞灰和PPS掺炭纤维对Hg0的吸附是物理吸附和化学吸附的共同结果,它们各自的脱汞效率分别可达27%和65%左右...

Removal of mercury vapor by fly ash and C-doped polyphenylene sulfide(PPS) fiber

The simulated flue gas which contains elemental mercury and flue gas as the major composition is made up by using the mercury vapor generator. This paper carries out the experiments about the removing from the flue gas in a laboratory-scale packed bed reactor system. The materials used in the paper are fly ash, PPS C-doped fibers and the combined effects of the two substances. The results find that the adsorption is the synergy of physical adsorption and chemical adsorption by using fly ash mixed with the PPS C-doped fibers. The mercury removal efficiency is 27% and 65% respectively. The mercury adsorption efficiency of the mixed C-doped PPS fiber with fly ash is not simply superposed the two components together. It is affected by the reaction temperature, concentration, and flue gas flow rate at the import of mercury and other factors. The higher adsorption temperature, the lower Hg0 removal efficiency of fly ash mixed with C-doped PPS fiber; increase the concentration of mercury at the entrance will not necessarily improve the removal efficiency; the greater flue gas flow rate, the less Hg0 removal efficiency.