Environmentally friendly and energy-saving mountain-shaped silicon carbide smelting tail gas recovery device and recovery method

Abstract

The invention provides an environmentally friendly and energy-saving mountain-shaped silicon carbide smelting tail gas recovery device. The environmentally friendly and energy-saving mountain-shaped silicon carbide smelting tail gas recovery device comprises two end walls; a reaction body is piled on the ground between the end walls; gas collection walls and nitrogen charging devices are also arranged on the two sides of a heat insulation material; and an airtight film covers the external surface of the reaction body. The environmentally friendly and energy-saving mountain-shaped silicon carbide smelting tail gas recovery device provided by the invention has the advantages that a sealing problem is solved by covering the airtight film and correspondingly embedding a first sealing groove and a second sealing groove in the front, rear, left and right edges of the airtight film so as to guarantee that the air content of recovered gas in the reaction body is less than a safety threshold value; and by using the embedded gas collection walls to pump the gas, the nitrogen charging devices carry out nitrogen displacement on gas collection chambers formed in the gas collection walls, and therefore, the gas exhaust of the reaction body can be improved, a defect that a certain amount of air enters CO gas to cause furnace explosion because a gas exhaust passage needs to be arranged for external gas pumping can also be overcome, sufficient gas exhausting in the reaction process is guaranteed, and a hard gas collection problem, puzzling the industry for a long time, of a mountain-shapedfurnace is solved. The invention further discloses an environmentally friendly and energy-saving mountain-shaped silicon carbide smelting tail gas recovery method.

Description

technical field [0001] The invention relates to the technical field of silicon carbide production, in particular to an environment-friendly and energy-saving Yamagata silicon carbide smelting tail gas recovery device and recovery method. Background technique [0002] Industrial synthesis of silicon carbide is made of quartz sand and petroleum coke or high-quality anthracite as raw materials, and is produced by high-temperature carbothermal reduction reaction. While synthesizing silicon carbide products, a large amount of gas with CO as the main component is also released. However, in recent years, climate change caused by environmental pollution has become a problem that human beings have to pay attention to. In response to the national energy conservation and environmental protection policy, many enterprises have changed their thinking and adjusted their management ideas, from the rough operation of high energy consumption, high pollution, and high emissions. The production...

AI Technical Summary

Problems solved by technology

However, in recent years, climate change caused by environmental pollution has become a problem that human beings have to pay attention to. In response to the national energy conservation and environmental protection policy, many enterprises have changed their thinking and adjusted their management ideas, from the rough operation of high energy consumption, high pollution, and high emissions. The production method is changing to energy saving, consumption reduction, and environmental protection. Yamagata furnace has been gradually eliminated due to its high energy consumption and high pollution. For CO collection, the furnace cover can be used for collection, and there is a large gap between the reactant and the furnace cover. Large space, this part of the space is filled with air, and the oxygen in the air is mixed with CO, which is prone to fryer accidents

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