Improvement of Stepping Flue-curing Barn

In order to save energy,reduce environmental pollution,further enhance the applicability of multifunction stepping flue-curing barn,tobacco fluecuring were experimented after installing a solar energy collector on the roof of the drying section,coating the inner wall of drying section with a ceramic thermal insulation coating,setting a programmable temperature control and dusting system,and adding an electrically powered pusher on the leaf truck in the drying section.The results showed that:1) the solar energy collector cut the coal consumption and curing cost per kilogram dry tobacco by 12.35% and 12.72%,respectively;2) the thermal insulation coating cut the coal consumption and curing cost by 6.70% and 6.72%,respectively;3) the programmable temperature control and dusting system reduced the coal consumption and emission of dust,SO₂ and NO_X per kilogram tobacco by 9.79%,46.2%,22.8% and 19.1%,respectively;taking the newly increased limewater cost of 0.005 RMB yuan into account,the curing cost reduced by 8.28%;4) the labor cost reduced by 31.25%,however electric power consumption increased by 3.57%;5) the total curing cost and emission of dust,SO₂ and NO_X reduced by 25.73%,56.40%,37.47% and 34.29%,respectively.