SHAFT FURNACE FOR ROASTING OF LOOSE MATERIAL Russian patent published in 2013 - IPC F27B1/00 

FIELD: machine building.

SUBSTANCE: invention refers to sugar production technology, and namely to saturation gas obtaining equipment used for cleaning of diffusion juice, and can be used when producing lime in shaft furnaces in building material industry, and in chemical and metallurgical industries. A shaft furnace for roasting of loose material so that saturation gas is obtained includes a cylindrical refractory-lined shaft, loading and unloading devices, a furnace gas suction duct, a gas pump, a fan for air supply to the furnace and a vortex tube. The vortex tube is equipped through a condensate trap to a condensed moisture removal device. Gas pump is equipped through a drive to a rotation speed control and a control unit; at that, the control unit includes a temperature control with a temperature sensor and a flow rate control with a flow rate sensor. Each of the controls consists of comparison and setting units, an electronic amplifier with a non-linear feedback unit and magnetic amplifier connected to the rotation speed control that is made in the form of a unit of powder magnetic couplings.

EFFECT: obtaining saturation gas in an energy-saving operating mode of a gas pump at the observed change in an operation process of temperature and flow rate of furnace gases.

1 dwg