System and method for producing calcium carbide through high-temperature ball-pressing double-vertical-furnace

Abstract

The invention relates to a system and a method for producing calcium carbide through high-temperature ball-pressing double-vertical-furnace. The system comprises a vertical lime furnace, a high temperature pyrolyzing furnace, an oxygen thermal process calcium carbide furnace, a ball pressing machine and an oxygen coal gun, wherein the vertical lime furnace comprises a limestone flour inlet, a lime discharging opening and a vertical lime furnace smoke inlet; a baffle capable of adjusting inclining angle is arranged in a hearth of the vertical lime furnace; the high temperature pyrolyzing furnace comprises a coal dust feeding port, a carbon powder discharging opening, a carbon powder inlet and discharging opening; the baffle capable of adjusting inclining angle is arranged in the hearth of the high temperature pyrolyzing furnace; the ball pressing machine comprises a lime inlet, a carbon power inlet and discharging opening; the oxygen thermal process calcium carbide furnace comprises a lime feeding port, a carbon powder feeding port, a smoke outlet and a discharging opening; a spray gun of the oxygen coal gun is arranged in the oxygen thermal process calcium carbide furnace. According to the system and the method for producing calcium carbide through high-temperature ball-pressing double-vertical-furnace provided by the invention, the baffle capable of adjusting inclining angle is respectively arranged in the vertical lime furnace and the high temperature pyrolyzing furnace, so that the reaction and pyrolysis time of the materials in the furnace can be conveniently controlled and the reaction degree and efficiency of the materials can be ensured.

Description

technical field [0001] The present invention generally relates to a production system and method of calcium carbide, in particular to a system and method for producing calcium carbide in a high-temperature briquette double-shaft furnace. 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 heat...

AI Technical Summary

Problems solved by technology

The disadvantages of this technology are: it needs to use expensive block coke and lime as raw materials; use electric energy to generate heat, high power consumption and high energy cost; 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 ; Due to the relatively small amount of high-temperature flue gas produced, 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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