Refining furnace of silicon carbide for recovering smelting waste gases

A silicon carbide and smelting furnace technology, applied in the field of silicon carbide smelting, can solve the problems of no recycling, energy waste, etc., and achieve the effects of easy furnace installation, air pollution reduction, and energy saving

Inactive Publication Date: 2009-01-07
贾玉东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With this traditional smelting furnace structure, the combustible waste gas generated during the production process is directly ...

Method used

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  • Refining furnace of silicon carbide for recovering smelting waste gases
  • Refining furnace of silicon carbide for recovering smelting waste gases
  • Refining furnace of silicon carbide for recovering smelting waste gases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 , 4 As shown in , 5, the body of the silicon carbide smelting furnace is composed of a furnace head 1, a furnace bottom 2, and an electrode 3. Airtight furnace walls 9 are arranged on both sides of the furnace body, and the furnace wall 9 is formed directly with the furnace head 1 and the furnace bottom 2. Groove shape, on which a furnace cover 16 is arranged, the furnace cover 16 is composed of asbestos cloth layer 23 to form the inner layer, canvas layer 24 to form the middle layer, rainproof cloth or plastic cloth 25 to form the outer layer, and the inner, middle and outer layers are fixed on the support frame On 26, form a rectangular lid, just cover on the body of heater, furnace lid 16 tops are provided with breathable valve 18.

[0026] Furnace wall 9 and burner head 1 top are provided with annular groove 17, as shown in Figure 5 top view, furnace cover 16 is covered on the body of furnace, and edge just puts into annular groove 17, and with quartz...

Embodiment 2

[0029] like figure 2 , 4 , 6, this silicon carbide smelting furnace, body of furnace is made up of burner head 1, furnace bottom 2, electrode 3, airtight furnace wall 9 is arranged on both sides of furnace body, and the inner side of furnace wall 9 is provided with breathable heat insulation layer 11, As shown in the top view of Figure 6, the heat insulation layer 11 is made up of multiple heat insulation layers, and the number of pieces is adjustable according to the length of the furnace. Each piece has a length of 3 meters. The width of the heat layer is 0.5 meters, the purpose is to separate the heat of the reaction space, avoid heat loss and heat radiation to the furnace wall and external pipes.

[0030] The furnace wall 9 forms a straight groove with the furnace head 1 and the furnace bottom 2, and a furnace cover 16 is arranged on it. The furnace cover 16 is composed of an asbestos cloth layer 23 as an inner layer, a canvas layer 24 as an intermediate layer, and a rai...

Embodiment 3

[0034] like image 3 , 4 , 7, the silicon carbide smelting furnace, the furnace body is composed of a furnace head 1, a furnace bottom 2, and an electrode 3, and an airtight furnace wall 9 is arranged on both sides of the furnace body, and an inner furnace wall 8 is arranged on the inner side of the furnace wall 9, and the inner furnace wall 8 is a ventilation furnace wall, and there is a space between the furnace wall 9 and the inner furnace wall 8 to form a gas collection chamber 10. Inner furnace wall 8 inboards are provided with air-permeable heat insulation layer 11, as shown in Fig. 7 top view, heat insulation layer 11 is made up of many heat insulation layers, and block number is adjustable according to furnace length, and each length is 2 meters, and every block The heat layer can be moved to facilitate disassembly and assembly. The width of each heat insulation layer is 3 meters. The purpose is to separate the heat of the reaction space, avoid heat loss and heat radi...

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Abstract

The invention provides a silicon carbide smelting furnace which can recycle a waste smelting gas, and solves the shortcomings that the combustible waste gas produced in the production process of the conventional smelting furnace structure is directly discharged along the gap of the furnace body, and burns on the surface of the furnace, thus resulting in great energy resource waste without recycling. The silicon carbide smelting furnace is as follows: airproof furnace walls are arranged on the two sides of a furnace body; the furnace walls, a furnace end and a furnace bottom form a straight groove shape; a furnace cover is arranged on the top of the straight shape; the furnace end, the furnace bottom, the furnace walls and the furnace cover form an enclosed space inside the furnace body; a plurality of gas collecting tubes are arranged to communicate the inside with the outside of the furnace body, thus achieving the purpose of collecting, discharging and utilizing the waste smelting gas. The silicon carbide smelting furnace has the advantages of simple manufacture and obvious waste gas recycling effect, and can effectively utilize energy resource and reduce smelting production cost.

Description

technical field [0001] The invention belongs to the technical field of silicon carbide smelting, and relates to a silicon carbide smelting furnace capable of recovering smelting waste gas. Background technique [0002] The industrial production of artificial silicon carbide has a history of more than 110 years. It was invented by the American Acheson. Up to now, people still use the Acheson furnace and methods for industrial production, but the furnace has been enlarged a lot and the level of mechanization also improved. However, a large amount of waste gas generated by smelting silicon carbide is still burned by furnace surface ignition, which not only causes air pollution, but also wastes a lot of energy. So far, the relevant materials only briefly introduce several waste gas treatment methods that may be adopted abroad, but there is no report on relevant technical solutions. Chinese patent CN1212183 discloses a furnace gas recovery device for smelting silicon carbide. A...

Claims

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Application Information

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IPC IPC(8): C01B31/36
Inventor 贾玉东
Owner 贾玉东
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