EXPERIMENTAL STUDY ON THE DESULFURIZATION OF MnO MODIFIED ATTAPULGITE

Manganese oxide impregnated attapulgite(MnO/GATP) was prepared through composite approach with modified attapulgite as the carrier and characterized by Fourier infrared spectrometer(FT-IR),X-ray diffraction(XRD) and X-ray fluorescence(XRF).The effects of active component content in desulfurizer,particle size,activation temperature and time of desulfurizer on desulfurization of H2S were studied.It is showed that the highest sulphur capacity was achieved at the flow of H2S 20(ml·min-1) at normal temperature and atmospheric pressure,with the concentration of active component of 27.75%,roasting temperature of 400 ℃ for 2.5 hours and grain size for the 1.0 mm.Under such condition the desulfurizer has good adsorption and good ability of desulphurization as a catalysis agent.Its sulphur capacity of removing H2S reaches 26.6% and superior over the compound desulfurizer of attapulgite.It is also showed that at normal temperature and atmospheric pressure,H2S may be turned into S,H2O and MnS on MnO/GATP desulfurizer.