The so-called open cycle process is that the drying medium is air, after drying, exhaust gas is discharged into the atmosphere.

dryer-cyclone separator-Scrubber process

This process is characterized by the exhaust gas in the tower, passing through the first stage gas of the cyclone separator.-After solid separation, the exhaust gas enters the wet scrubber again.TwoSecondary gas-Solid separation and then discharge into the atmosphere, as shown in Fig.It is shown. After the washing liquid reaches a certain concentration, the pump is sent to the trough, spray dried and recycled.

dryer-cyclone separator-Scrubber process

OneSpray drying tower;Two- control panel;ThreeMaterial liquid pump;Four- liquid storage tank;Five- blower;Six- air heater;Seven- atomizer;Eight- cyclone separator;Nine- induced draft fan;TenVenturi scrubber

dryer-cyclone separator-Bag filter process

This process is characterized by the exhaust gas in the tower, passing through the first stage gas of the cyclone separator.-Solid separation, exhaust gas and then enter the bag filter.TwoSecondary gas-After solid separation, it is then discharged into the atmosphere, as shown in Fig.It is shown. The materials of cyclone separator and bag filter are packed as products or mixed or separately.

dryer-Bag filter process

One- air heater;TwoStorage tank;Three- two fluid nebulizer;FourSpray drying tower;Five- cyclone separator;Six- bag filter;SevenAir blower

Open spray drying process with partial exhaust gas recirculation

This process is characterized by the exhaust gas in the tower, passing through the primary air of the cloth bag filter.-After solid separation, it is discharged into the atmosphere, as shown in Fig.The recoveries are as high as possible.99%Above, the dust content in the exhaust gas can meet the discharge standard. This process is simple, but the bag filter should have enough filtering area to maintain a constant pressure drop of the bag filter. Otherwise, the amount of spray will be affected. China's white carbon black spray drying, the choice of dryer.-Bag filter process.

Some exhaust gas recirculation is designed to recover the residual heat from some exhaust gases, so as to save fuel consumption. The total amount of recycling is total emissions.20%～30%. Maximum reachable50%Depending on the exhaust temperature. The flow chart is as followsIt is shown.