A system and method for producing calcium carbide by high-temperature pressure balls

Abstract

The invention relates to a system and method for producing calcium carbide by high-temperature pressure balls. The system includes an adjustable pyrolysis furnace, a briquetting machine, an oxythermal calcium carbide furnace and an oxygen coal gun, wherein the adjustable pyrolysis furnace includes a limestone powder inlet, a coal powder inlet, a discharge outlet, The flue gas inlet; the furnace chamber of the adjustable pyrolysis furnace is provided with a baffle plate with an adjustable inclination angle, and there is a gap between the baffle plate and the inner wall of the adjustable pyrolysis furnace, and small holes are arranged on the baffle plate; the ball pressing machine Including lime powder and carbon powder inlet and feeding port; oxythermal calcium carbide furnace includes material inlet, flue gas outlet and material outlet; the spray gun head of oxygen coal gun is set in oxythermal calcium carbide furnace, The furnace roof of the calcium carbide furnace extends into the oxythermal calcium carbide furnace. The system and method for producing calcium carbide by high-temperature pressure balls of the present invention can conveniently control the reaction time of raw materials in the furnace by setting a baffle plate with adjustable inclination angle in the adjustable pyrolysis furnace, so as to ensure the degree of reaction of raw materials and efficiency.

Description

technical field [0001] The present invention generally relates to a system and method for producing calcium carbide, in particular to a system and method for producing calcium carbide by high-temperature pressure balls. Background technique [0002] Calcium carbide, commonly known as calcium carbide, is produced by the reaction of coke and calcium oxide. It is an important coal chemical product and basic chemical raw material. It is mainly used in the production of acetylene and acetylene-based chemical products, including vinyl chloride series, vinyl acetate series and acrylic-based products. . Calcium carbide plays a very important role in the development of my country's national economy, and the output of calcium carbide has been increasing continuously in the past ten years. [0003] Although the calcium carbide industry has been developed for many years, the current calcium carbide production process still mainly adopts the method of electric arc heating, that is, the ...

AI Technical Summary

Problems solved by technology

The disadvantages of this technology are: need to use high-priced lump coke and lime as raw materials; use electric energy to generate heat, high power consumption, and high energy cost; use coal powder and lime powder to press balls and then enter the pyrolysis process The overflow of volatile gas will easily cause the breakage of the pellets, resulting in an increase in the pulverization rate of the balls; because the arc is almost in the center of the electric arc furnace, the utilization efficiency of the unit furnace capacity is limited, and the output is low; the amount of high-temperature flue gas generated is relatively small. Each ton of calcium carbide produces about 400m 3 , the related heat energy is difficult to recover

The shortcoming of this technology is: need to utilize high price lump coke and lime as raw material

The main problem of the current oxythermal method is that it does not solve the problem of the block material reaction, that is, due to the small specific surface area of ​​the block material, the raw material needs to be reacted at a relatively high temperature, resulting in high production energy consumption of the system

At present, the production raw materials of the oxythermal method are still relatively expensive lump coke and limestone, which has not effectively reduced the cost of raw materials

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