Novel energy-saving and environmentally friendly double cone rotary dryer coil heating device

At present, jacket heating devices are commonly used in the manufacturing of double cone rotary dryers in the drying machinery industry. However, it has the disadvantage of uneven heating, and the heating medium is difficult to enter some of the dead corners of the jacket, which affects product quality and yield. The heating medium is prone to scaling inside the jacket. The heating medium may experience heating bias due to gravity, resulting in low heat utilization efficiency. In addition, the jacket heating device belongs to pressure vessels and may have limitations on the usage location and later maintenance. The jacket heating device is welded from an iron plate and a stainless steel plate, with different coefficients of material expansion, which has the disadvantage of easy leakage after long-term use.

The jacket heating device shown in the picture has heating dead corners, and steam cannot enter.

At the request of the customer, our company has decided to change the commonly used jacket processing method to use a coil heating device. The coil heating device solves the problem of uneven heating of the jacket heating device.

The picture shows a coil heating device undergoing boring and milling processing

After using a coil heating device, the heating medium enters through the coil heating inlet, spirals forward through the coil, and flows out through the coil heating outlet. The heating medium flows inside the coil, eliminating heating blind spots. The effective heating area is increased, which accelerates the heating rate and increases the heat received. The heating medium is not easy to scale inside the coil and is easy to maintain and clean. The coil heating device does not belong to pressure vessels, has low requirements for the site, and has a long service life. And the coil heating device can heat and concentrate the material by introducing a heating medium, and then cool and crystallize the material by introducing a cooling medium, achieving pre heating concentration and post cooling crystallization. Saved production space and improved production efficiency.