System and method for recovering heat of discharged flowing calcium carbide through combination of air blowing and air inducing

Abstract

The invention relates to the technical field of calcium carbide heat recovery, in particular to a system and a method for recovering heat of discharged flowing calcium carbide through combination of air blowing and air inducing. A calcium carbide furnace communicates with one end of a launder, and the other end of the launder obliquely extends to a calcium carbide pot; a smoke hood is hung on the calcium carbide pot; a gas outlet end of a gas conveying device communicates with one end of a gas source outlet pipe, the other end of the gas source outlet pipe communicates with the air distributor, and a plurality of nozzles are fixedly arranged on the air distributor; one end of a flue communicates with the smoke hood, the other end of the flue communicates with an air inlet of a first dust remover, an air outlet of the first dust remover is connected with one end of a first dust remover outlet pipe, the other end of the first dust remover outlet pipe communicates with a hot fluid inlet of a heat exchange device, and a hot fluid outlet of the heat exchange device communicates with one end of a heat exchange device outlet pipe; and the other end of the heat exchange device outlet pipe communicates with an air inlet of a second dust remover, an air outlet of the second dust remover communicates with one end of a second dust remover outlet pipe, and the other end of the second dust remover outlet pipe communicates with a chimney. The effects of dust removal and liquid battery heat recovery are achieved.

Description

technical field [0001] The invention relates to the technical field of calcium carbide heat recovery, in particular to a system and a method for recovering the heat of flowing calcium carbide in a furnace by combined blasting and induced air. Background technique [0002] The chemical name of calcium carbide is calcium carbide, and its molecular formula is CaC2. It is the basic raw material of organic synthetic chemical industry. Because calcium carbide can conduct electricity, the higher the purity, the easier it is to conduct electricity, so it is called calcium carbide. [0003] The liquid calcium carbide smelted in the calcium carbide furnace needs to be discharged from the calcium carbide furnace. One end of the launder is connected to the interior of the calcium carbide furnace, and the other end of the launder is inclined downward; the liquid calcium carbide enters the calcium carbide pot through the launder, accompanied by dust diffusion into the air; there are 15 p...

AI Technical Summary

Problems solved by technology

[0004] Calcium carbide is liquid when it comes out of the furnace, the temperature is 2000°C, the specific heat capacity is 0.264 kcal / kg.°C, and the heat it has is 522.7 kcal / kg, which accounts for about 10% of the total energy consumption of calcium carbide production; The inner surface of the pot first solidifies into a solid state, but the inside is still in a liquid state. Because the calcium carbide has a low thermal conductivity of only 12.5W / m.℃, it is difficult to recycle. The calcium carbide out of the pot must be stacked in the cooling workshop for two to three days and cooled to room temperature before crushing. Used as a raw material for the production of acetylene gas

[0005] In summary, the natural cooling of calcium carbide liquid to room temperature not only requires a long cooling time, but also wastes the heat emitted during the cooling process.

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