Calcium carbide production system provided with adjustable pyrolyzing furnace and calcium carbide production method

Abstract

The invention relates to a calcium carbide production system provided with an adjustable pyrolyzing furnace and a calcium carbide production method. The system comprises the adjustable pyrolyzing furnace, an oxygen thermal method calcium carbide furnace and an oxygen lance, wherein the adjustable pyrolyzing furnace comprises a limestone powder feeding inlet, a pulverized coal feeding inlet, a discharge outlet and a flue gas inlet; dip angle adjustable baffles are arranged in a hearth of the adjustable pyrolyzing furnace; gaps are reserved between the baffles and the inner walls of the adjustable pyrolyzing furnace; small holes are formed in the baffles; the oxygen thermal method calcium carbide furnace comprises a feeding inlet, a flue gas outlet and a discharge outlet; a nozzle of the oxygen lance is arranged in the oxygen thermal method calcium carbide furnace; and the oxygen lance stretches into the oxygen thermal method calcium carbide furnace from the top of the oxygen thermal method calcium carbide furnace. The calcium carbide production system provided with the adjustable pyrolyzing furnace and the method have the beneficial effects that the reaction time of the raw materials in the furnace can be conveniently controlled by arranging the dip angle adjustable baffles in the adjustable pyrolyzing furnace, thus ensuring the raw material reaction degree and efficiency.

Description

technical field [0001] The present invention generally relates to a calcium carbide production system and method, in particular to a calcium carbide production system and method provided with an adjustable pyrolysis 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 heating, that is,...

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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