To　investigate　the　adsorption　kinetics　and　thermodynamic　adsorption　mechanism　and　laws　of　dry　flue　gas　desulfurization,　we　prepared　a　new　adsorbent　by　loading　Cr,　Cu,　and　Zn　on　TiO2-loaded　multiwalled　carbon　nanotubes.　Desulfurization　experiments　were　also　carried　out.　In　this　study,　three　kinds　of　samples　were　used　for　simulation　and　diffusion　processes　in　the　dynamic　adsorption　of　different　SO2　volume　fractions　in　flue　gas　and　thermodynamic　model　analysis　of　different　temperatures　in　flue　gas.　Results　show　that　the　diffusion　coefficient　of　SO2　in　three　kinds　of　samples　ranges　from　10(-16)　to　10(-14)　m(2)　s(-1),　and　the　diffusion　may　be　dominated　by　configuration　diffusion.　The　intraparticle　diffusion　model　predicts　that　the　performance　improves　with　an　increase　in　the　SO2　volume　fraction　and　a　shift　of　adsorption　time.　This　finding　indicates　that　an　increase　in　SO2　volume　fraction　and　a　change　in　adsorption　time　increase　the　Kundsen　diffusion　specific　gravity　and　decrease　the　configuration　diffusion　specific　gravity,　thereby　increasing　the　SO2　diffusion　resistance,　which　becomes　faster　than　the　activation　energy　barrier　resistance　in　the　catalytic　oxidation　reaction.　Thus,　the　diffusion　resistance　specific　gravity　increases　in　the　total　resistance　of　the　diffusion　reaction.　One　possible　mechanism　of　the　adsorption　process　is　the　transition　to　surface　reaction　control　at　the　early　stage　of　adsorption　to　joint　control　of　late　diffusion　and　surface　reactions.　Adsorption　thermodynamics　studies　show　that　SO2　adsorption　by　three　adsorbents　is　a　spontaneous,　exothermic,　and　entropic　reduction　process,　and　the　increase　in　temperature　is　inconducive　for　SO2　adsorption　in　three　samples.