Project Engineering Concept

Fully consider the characteristics of high moisture and viscosity of materials to design equipment and process. Considering energy saving, environmental protection, reuse and other characteristics.

Project Implementation

The sugar residue moisture content is about 30%-40%, and the sugar residue is sent to the box feeder by the forklift. The special box feeder has the characteristics of caching material, dispersing material and even feeding. The box feeder will send the material to the belt conveyor, the belt conveyor with roller balance, can accurately measure the amount of feeding. The material enters the shaftless screw conveyor through the belt conveyor. Shaftless screw conveyor is very suitable for conveying materials with higher moisture and greater viscosity. The material enters the dryer through the shaftless screw conveyor. The dryer is equipped with a chain device to disperse the material and prevent the material from sticking to the cylinder wall. This design can also greatly improve the heat exchange efficiency. The dryer uses the hot flue gas from the rotary kiln to dry the material. After drying, the materials are calcined in the rotary kiln. The rotary kiln is equipped with a burner system to provide heat energy. The calcination temperature of 1250 degrees makes the materials fully react into lime. The calcined lime is fed into a single cylinder cooler. The single-cylinder cooler uses natural air and lime for heat exchange, and the temperature after cooling is the ambient temperature +50℃. At the same time, the heated air becomes combustion - supporting air and enters the rotary kiln. The lime discharged from the cooling machine passes through the screw conveyer to the ball mill where it is ground into lime powder.

The flue gas treatment of this project has also been carefully designed. The flue gas from the kiln tail first enters the cyclone dust collector for dust removal, and the flue gas after dust removal enters the heat exchanger for heat exchange. The flue gas after heat exchange enters the CO₂ collection device. The CO₂ collected will be used for production work in the sugar plant. The lime grinding system is equipped with a wet dust collector. The lime dust collected by the wet dust collector can be changed into lime milk by hydration and used in sugar factory production.