Calcium carbide furnace and method for preparing calcium carbide

Abstract

The invention discloses a calcium carbide furnace and a method for preparing calcium carbide. The calcium carbide furnace comprises a furnace body, a plurality of electrodes and a plurality of spray guns. A calcium carbide production space is defined in the furnace body. The electrodes are embedded in the calcium carbide production space through the top wall and / or the side wall of the furnace body and are suitable for providing heat for the calcium carbide production space. The spray guns are embedded in the calcium carbide production space through the top wall and / or the side wall of the furnace body and are suitable for providing coal dust and oxygen for the calcium carbide production space so that heat generated through combustion of the coal dust and the oxygen can be supplied to the calcium carbide production space. Due to the fact that the spray guns are reasonably arranged between the electrodes on the top wall and / or the side wall of the furnace body of the calcium carbide furnace, heat in the calcium carbide furnace is evenly distributed.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a calcium carbide furnace and a method for preparing calcium carbide using the calcium carbide furnace. Background technique [0002] Calcium carbide is the main raw material for the production of ethylene and occupies a very important position in the industry. The production of calcium carbide is to mix a certain proportion of quicklime and semi-coke (coke) to send the charge into the electric furnace through the feeding device and the feeding pipe. The main structure of the electric furnace includes Furnace body and electrodes, when the calcium carbide furnace works, it relies on the electric arc generated after energization, and relies on the high temperature formed by the arc to heat the charge to make the charge reach the heat required for chemical reaction. Among them, the area where the high temperature emitted by the arc can directly act is called the arc work area or melting Th...

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Problems solved by technology

[0002] Calcium carbide is the main raw material for the production of ethylene, and occupies a very important position in the industry. The production of calcium carbide is to mix a certain proportion of quicklime and semi-coke (coke) to send the charge into the electric furnace through the feeding device and the feeding pipe. The main structure of the electric furnace includes Furnace body and electrodes, when the calcium carbide furnace works, it relies on the electric arc generated after energization, and relies on the high temperature formed by the arc to heat the charge to make the charge reach the heat required for chemical reaction. Among them, the area where the high temperature emitted by the arc can directly act is called the arc work area or melting The position of this area is from the bottom of the electrode end to the bottom of the furnace. The structure of the traditional calcium carbide furnace is a circular three-phase electrode structure. The three electrodes are arranged inside the furnace body in an equilateral triangle, and the outer furnace body is circular. Disadvantages of the calcium carbide furnace structure: there are many places around the furnace where the arc cannot function or the effect is very poor, that is, the non-melting pool area, so that the temperature in these places cannot meet the reaction requirements, and the charge in this area cannot or is difficult to react. Due to the large difference in heat distribution, the productivity of the calcium carbide furnace is low, the power consumption is high, the consumption of semi-coke (coke) is relatively large, and the cost is high

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