Light multifunctional industrial kiln wall structure with composite layers

An industrial furnace and multi-functional technology, applied in the field of industrial heat preservation and energy saving, can solve the problems of poor thermal performance, high heat consumption, high specific strength, etc.

Inactive Publication Date: 2013-12-04
李学闵 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the disadvantages of the above-mentioned industrial furnaces, such as large furnace body mass, high heat storage, high heat consumption and poor thermal performance, the purpose of the present invention is to provide a furnace that can simultaneously play reflective heat insulation and heat preservation, and has...

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  • Light multifunctional industrial kiln wall structure with composite layers
  • Light multifunctional industrial kiln wall structure with composite layers

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Experimental program
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Effect test

Embodiment 1

[0025] 1. Embodiment 1: Fabrication of steel inner shell

[0026] To implement the steel structure process specification, first, according to the requirements of the technical documents, the refractory steel plate with a thickness of 6mm4Cr9Si2 is used for shearing blanking of the cylinder with a nominal diameter of φ1500mm and a height of 1800mm--processing of the weld bevel--coil processing; The butt joint is welded according to the continuous weld seam, and the weld seam is guaranteed to be plump, free of slag inclusions and cracks; the steel inner shell (3) is manufactured after out-of-roundness correction and quality inspection.

Embodiment 2

[0027] 2. Embodiment 2. Manufacturing of multi-reflection heat insulation structure and stiffening cylinder

[0028] According to the calculation of function and structure, the reflective insulation structure has a total of 11 layers from the inside to the outside. The air space layer of the first layer is 50mm, and the second layer to the tenth layer are all 20mm. The eleventh layer uses aluminum alloy mesh as the positioning support adjustment part. The nominal outer diameter is φ2000mm.

[0029] The first weight: (1) Distribute six axially ribbed steel strips with a thickness of 4mm, a width of 50mm, and a length of 1800mm evenly along the outer circle of the steel inner shell, perpendicular to the surface, and perform staggered intermittent welding from both sides, and the length of the fillet weld is 20mm , spacing 30mm, weld height 4mm, a total of 36 sections;

[0030] (2) Cut 3 steel rings with a width of 50 mm and a thickness of 4 mm that have been prepared, and cut t...

Embodiment 3

[0036] 3. Example 3. Construction of shaped fire-resistant and heat-insulating inner lining

[0037] Construction takes place inside the steel inner shell. The refractoriness of the selected refractory brick material should be 200°C higher than the temperature of the molten metal, and the thickness of the heat-insulating inner lining layer of the refractory brick to ensure that the working temperature of the steel inner shell (3) is ≤1000°C. The construction process is as follows: The hollow wall functional enclosure structure is laid flat and constructed inside the steel inner shell (3). First, use ASC (aluminum oxide-silicon carbide-C) bricks with a density of 2.8t / m3 to build the bottom, then build arcs from the bottom to both sides, and finally build bricks to the top. Pour a layer of high-alumina refractory castable to level the wall, and then lay bricks. The brick joints between rows should be staggered, and the joints between bricks are all 2mm, and finally all are fi...

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Abstract

The invention provides a light multifunctional industrial kiln wall structure with composite layers. The light multifunctional industrial kiln wall structure is manufactured by processes such as positioning, assembling and sealing of a fire-resistant layer (1), a thermal-insulating layer (2), an inner steel shell (3), a supporting and positioning piece (4), an air interlayer (5), a reflecting metal layer (6), a bonding and sealing material (7) and an outer surface layer (8). The light multifunctional industrial kiln wall structure integrates three technological advantages of thermal-insulating functions of metal reflecting materials, high specific strength and specific stiffness of multilayer metal hollow reinforced laminates and cylinders and high-temperature resistance of inorganic fire-resistant and thermal-insulating materials, so that the technical problem that a single inorganic fire-resistant and thermal-insulating material is large in thermal storage of furnace body, large in energy consumption, low in heat efficiency and the like is solved, a kiln is changed into a light hollow-wall structure furnace which is few in thermal storage, low in thermal transmission and high in heat efficiency from a heavy solid furnace, the industrial kiln can have good thermal-insulating effect, heat efficiency is improved, energy conservation and consumption reduction are realized, combustion noise can be insulated and reduced, externally-leaked electric waves can be shielded, surrounding thermal environment is improved, and the industrial kiln is high in cost performance, obvious in comprehensive social benefit and economic benefit, and wide in prospect of popularization and application.

Description

1. Technical field [0001] The invention belongs to the technical field of industrial heat preservation and energy saving, and in particular relates to a multi-layer composite light-weight multi-functional industrial kiln wall structure 2. Background technology [0002] Industrial furnaces are key equipment in metallurgy, chemical industry, building materials, light industry and other departments and important supporting equipment in the machinery industry. At the same time, they are also large energy consumers. Their energy consumption accounts for more than 20% of my country's total energy development. At present, the thermal efficiency of industrial furnaces in my country is very low, and the ratio of the effective heat to the chemical heat of the fuel consumed is still less than 15%, which needs to be improved urgently. One of the important reasons for its high energy consumption and low thermal efficiency is the excessive heat consumption and poor thermal performance of ...

Claims

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Application Information

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IPC IPC(8): F27D1/00
Inventor 李学闵李茂国
Owner 李学闵
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