Electric heating rotary kiln

A rotary kiln and electric heating technology, applied in the field of rotary kiln, can solve the problems of low thermal efficiency and complex structure, and achieve the effects of high thermal efficiency, uniform heating and simple structure

Active Publication Date: 2013-10-02
冯良荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the problems of a heat transfer process from the heating element to the heated material in the existing electric heating rotary kiln technology, low thermal efficiency, complex structure, etc., the present invention provides a r

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] figure 1It is the schematic diagram of Embodiment 1, an electric heating rotary kiln device, which is used to dry or heat materials, including a rotary tube 5, a rotary tube thermal insulation part 6, a pulley 2, a load-bearing wheel 3, a heating system, and a kiln head inlet. For components such as material 1 and kiln tail discharge material 9, the part of the inner layer of the thermal insulation part that contacts the material is an insulating material. The electrodes are composed of a positive pole 10 and a negative pole 11, both of which pass through the rotary tube and the thermal insulation part 6, and are in contact with the materials in the chamber of the rotary kiln during work. Conductive rings 4 and 7 are fixed on the circumference of the outer wall of the revolving tube and electrically connected to the electrodes 10 and 11 respectively, and the power supply is connected to the conductive rings 4 and 7 through brushes. When working, the power supply curren...

Embodiment 2

[0033] figure 2 It is the schematic diagram of Embodiment 2, an electric heating rotary kiln device, which is used for drying or heating materials, including a rotary tube 5, a rotary tube thermal insulation part 6, a pulley 2, a load-bearing wheel 3, a heating system, and a kiln head inlet. For components such as material 1 and kiln tail discharge material 9, the part of the inner layer of the thermal insulation part that contacts the material is an insulating material. The electrodes are composed of conductive materials 10, 11 and ring-shaped conductive materials 12 and 13 respectively conductively connected to them. The ring-shaped conductive materials 12 and 13 are fixed on the inner wall of the rotary kiln hearth, and they are in contact with the materials in the rotary kiln hearth during work. , the conductive materials 10 and 11 pass through the rotary tube and the thermal insulation part 6, and the conductive materials 12 and 13 are in contact with the materials in th...

Embodiment 3

[0035] image 3 It is the schematic diagram of embodiment 3, an electric heating rotary kiln device, which is used for drying or heating materials, including a rotary tube 5, a rotary tube thermal insulation part 6, a pulley 2, a load-bearing wheel 3, a heating system, and a kiln head inlet. For components such as material 1 and kiln tail discharge material 9, the part of the inner layer of the thermal insulation part that contacts the material is an insulating material. The electrodes are composed of a set of positive electrodes 10 and 14, and a set of negative electrodes 11 and 15. These two sets of electrodes pass through the rotary tube and the thermal insulation part 6, and are in contact with the materials in the rotary kiln furnace during work. Conductive rings 4 and 7 are fixed on the circumference of the outer wall of the revolving tube and electrically connected to the electrode groups 10 and 14, 11 and 15 respectively, and the power supply is connected to the conduc...

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Abstract

An electric heating rotary kiln comprises a rotary pipe, a heat-insulating part, a belt pulley, bearing wheels, a heating system, a head feeder, a tail discharger and other parts, and is characterized in that: the part of the inner wall of the rotary pipe or the heat-insulating part, which is in contact with material, is insulating material; the heating system at least comprises two electrodes or two groups of electrodes, one electrode or one group of electrodes are the anode, the other electrode or the other group of electrodes are the cathode, alternating-current or direct-current voltage is applied on the two electrodes or two groups of electrodes, the electrodes run through the rotary pipe to get into the rotary kiln and touch heated material, current gets to the material and then the cathode via the anode, so that the material heats as a resistor, and thereby the material is heated. Compared with other electric heating rotary kilns, the electric heating rotary kiln has the advantages that: the electric heating rotary kiln can be produced into an internal electric heating rotary kiln, the material can be uniformly heated for the material heats, the electric heating efficiency is high, energy consumption is low, and the heating and insulating measure is simple and convenient.

Description

technical field [0001] The invention relates to a new type of heating rotary kiln, which directly feeds power to the material in the rotary kiln, and makes use of the resistance of the material to directly heat the material itself. Background technique [0002] Rotary kiln is an important heating and calcination equipment in the chemical industry, materials, and even pharmaceutical industries, and it is widely used. According to the position of the heat source in the rotary kiln, the heating method can be divided into external heating and internal heating; according to the type of heat source, it can be divided into electric heating, gas heating, and coal injection heating; there are also materials mixed with fuel such as coal. and other heating methods for combustion. [0003] In the internal heating rotary kiln, coal and gas are injected into the interior of the rotary kiln, and air or oxygen is introduced for combustion. The material to be heated must have certain oxidat...

Claims

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Application Information

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IPC IPC(8): F27B7/10F27B7/34
Inventor 冯良荣甘亚
Owner 冯良荣
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