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Mesh belt continuous heating carburizing furnace door cover flame waste heat recovery and reuse device

A waste heat recovery and carbon furnace technology, applied in lighting and heating equipment, furnaces, waste heat treatment, etc., can solve problems such as energy waste and fire, and achieve the effects of reducing production costs, reducing possibilities, and saving electric energy

Active Publication Date: 2016-07-06
保定市金能换热设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The carburizing process is widely used in metal heat treatment, metallurgy, forging and other industrial fields. In order to improve the mechanical properties of metal materials, carburizing furnaces are usually used for carburizing treatment, and mesh belt continuous heating carburizing furnaces are commonly used Carburizing device, the currently widely used mesh belt type continuous heating carburizing furnace, in order to prevent the oxygen in the air from entering the furnace and causing the oxidation of the workpiece, a flame is set at the door of the carburizing furnace, and the gas is burned into the furnace Oxygen in the air; the flame of the furnace door cover is in a pulsating state, the temperature is high, and it is very easy to cause a fire due to accidental factors, and the flame of the furnace door cover of the traditional mesh belt continuous heating carburizing furnace and the flue gas after combustion of the gas are directly discharged into the Atmosphere, including flame waste heat and flue gas waste heat, causes waste of energy; and there is no recovery and reuse device or method for the flame waste heat of carburizing furnace door cover in the prior art

Method used

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  • Mesh belt continuous heating carburizing furnace door cover flame waste heat recovery and reuse device
  • Mesh belt continuous heating carburizing furnace door cover flame waste heat recovery and reuse device
  • Mesh belt continuous heating carburizing furnace door cover flame waste heat recovery and reuse device

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preparation example Construction

[0084] In a preferred embodiment according to the present invention, a thermal insulation layer is coated on the inner wall of the upper cover body 11, the square pipe 7, and the lower cover body 21, and the thermal insulation layer is used to suppress heat passing through the wall of the carburizing furnace. The coating that is transmitted outward, the heat insulation layer is coated with high-temperature radiation coating, and the thickness is 0.2-0.5mm. The preparation method includes: uniformly coating the high-temperature radiation coating on the On the inner wall of the upper cover body 11, the square pipe 7 and the lower cover body 21, dry at 20-40°C for 12-48 hours to obtain the heat insulation layer;

[0085] The preparation method of the high-temperature radiation coating includes: powdery zirconia (ZrO2) with a particle size of 70-150 μm 2 ), ferric oxide (Fe 2 o 3 ), chromium trioxide (Cr 2 o 3 ), silicon dioxide (SiO 2 ) is mixed according to the weight ratio...

Embodiment 1

[0103] The preparation of embodiment 1 high temperature radiation coating

[0104] Powdered zirconia (ZrO2) with a particle size of 100-120 μm 2 ), ferric oxide (Fe 2 o 3 ), chromium trioxide (Cr 2 o 3 ), silicon dioxide (SiO 2 ) mixed according to the weight ratio of 2:2:3:1, adding 12% silica sol of the total mass of the above powder, mixing evenly, and calcining at 1300° C. for 10 hours; cooling down to room temperature, and processing in a ball mill for 25 minutes to obtain a particle size of Particles of 40-60 μm; mix the above particles with sodium carboxymethyl cellulose and polyacrylic acid evenly, and disperse them by ultrasonic waves for 40 minutes to obtain a viscous slurry which is the high-temperature radiation coating.

Embodiment 2

[0105] Embodiment 2 The preparation of thermal insulation layer

[0106] The high-temperature radiation coating prepared according to the method described in Example 1 is evenly coated on the inner walls of the upper cover body 11, the square and round pipes 7 and the lower cover body 21 by spraying, and dried at 25°C for 48 hours to obtain the heat insulation coating. Insulation.

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Abstract

The invention discloses a mesh belt type continuous heating carburizing furnace door cover flame waste heat recovery reusing device which comprises an upper heat exchanging part, a lower heat exchanging part, a water outlet pipe, a water inlet pipe, a connecting pipe and a square circular pipeline. The upper heat exchanging part comprises an upper cover body and an upper heat exchanging pipe bundle. The lower heat exchanging part comprises a lower cover body and a lower heat exchanging pipe bundle. The water outlet pipe is communicated with the upper heat exchanging pipe bundle. The water inlet pipe is communicated with the lower heat exchanging pipe bundle. The connecting pipe is communicated with the upper heat exchanging pipe bundle and the lower heat exchanging pipe bundle. The square circular pipeline is in sealing connection with the upper cover body and the lower cover body. A spiral groove is formed in the inner wall of a heat exchanging pipe. A heat transferring fin is arranged on the outer wall of the heat exchanging pipe. A heat insulation layer is coated in the device. According to the mesh belt type continuous heating carburizing furnace door cover flame waste heat recovery reusing device, carburizing furnace door cover flames and smoke waste heat are subjected to recovery reusing, energy waste is avoided, energy is saved, guiding demonstration effect is achieved on energy-saving emission-reducing working, the heat treatment energy-consumption index is lowered, flame outlet temperature is lowered, safety is improved, and meanwhile production cost is lowered.

Description

technical field [0001] The invention relates to the field of waste heat recovery and reuse of carburizing furnaces, in particular to a mesh belt type continuous heating carburizing furnace door cover flame waste heat recovery and reuse device. Background technique [0002] The carburizing process is widely used in metal heat treatment, metallurgy, forging and other industrial fields. In order to improve the mechanical properties of metal materials, carburizing furnaces are usually used for carburizing treatment, and mesh belt continuous heating carburizing furnaces are commonly used Carburizing device, the currently widely used mesh belt type continuous heating carburizing furnace, in order to prevent the oxygen in the air from entering the furnace and causing the oxidation of the workpiece, a flame is set at the door of the carburizing furnace, and the gas is burned into the furnace Oxygen in the air; the flame of the furnace door cover is in a pulsating state, the temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00
CPCY02P10/25
Inventor 李永宿新天王伟范双喜
Owner 保定市金能换热设备有限公司
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