The sludge contains a large amount of organic matter. When the sludge dryer is working, the sludge enters the guide plate of the dryer from the feeder through the chute, and as the cylinder rotates, the sludge is guided to the inclined hoisting plate, and then lifted to the center of the cylinder, and it is gradually scattered to form a material curtain. The high-temperature air flows through it to preheat the sludge and evaporate part of the water. When the sludge is spilled and moved to the movable grate wing, the material is mixed with the preheated grate wing, which transfers heat to the material and evaporates part of the water. At the same time, the material entrained by the wing plate is lifted and scattered, repeated many times, and the material conducts convection and contact heat exchange with the hot air flow. At the same time, the cleaning device also played a role in breaking the sludge ball, which increased the drying speed, and finally the sludge was dried into a loose material with low moisture and discharged from the discharge port.

  During the drying process of the sludge dryer, part of the organic matter of the sludge will be decomposed and various gases will be released. The measurement results of the sludge drying simulation test and the actual engineering release gas show that at a temperature below 200 ℃, the gas released by the sludge, in addition to the most important water vapor, also contains a small amount of hydrocarbons. The atmosphere is unstable and easily oxidized or decomposed. Since the amount of flue gas required to dry the sludge using the flue gas waste heat is more than 1.5×105 cubic meters per hour, the small amount of harmful gases released from the sludge are fully diluted, and there is a gap between the sludge released gas and the flue gas. Finally, after the treatment of the dust removal and degassing device, the exhaust gas produced by the sludge drying can reach the standard emission.

  The advantage of Zhengzhou Jiutian sludge dryer is that it can dry sludge with 90% water content to finished products at one time. Aiming at the characteristics of easy agglomeration and agglomeration in the process of sludge dryer, the material plate structure of the general single-channel dryer is changed, and the combined self-cleaning device is adopted, which greatly expands the application range of the single-channel sludge dryer. The sludge dryer produced by Jiutian can not only dry sludge efficiently, but also dry various high-viscosity materials.