Calcium carbide furnace and method for preparing calcium carbide

A calcium carbide furnace and calcium carbide technology, applied in the field of metallurgy, can solve the problems of high cost, high power consumption, failure to meet the reaction requirements, etc., and achieve the effects of preventing the service life from being shortened, the heat distribution is uniform, and the production power consumption is low.

Active Publication Date: 2015-11-11
SHENWU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Calcium carbide furnace and method for preparing calcium carbide
  • Calcium carbide furnace and method for preparing calcium carbide
  • Calcium carbide furnace and method for preparing calcium carbide

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] In this embodiment, the electrodes of the calcium carbide furnace are three-phase electrodes. The electrodes are inserted into the molten pool and do not touch the bottom of the furnace, so that electric arcs can be generated to heat the raw materials. Three spray guns are installed on the furnace cover of the calcium carbide furnace, one of which is located in the three-phase At the center of the electrode, the other two electrodes are symmetrically distributed outside the three-phase electrode, 2 / 3 radius away from the center of the horizontal interface of the calcium carbide furnace. The pipe is connected to the oxygen pressurization station through a high-pressure oxygen pipeline, the cooling water pipe is connected to the water pump, and the valve is set at the front of the spray gun. When spraying into the furnace, the pulverized coal pipeline, oxygen pipeline and valve are opened, and the pulverized coal / oxygen enters the spray gun. The pulverized coal is ejected ...

Embodiment 2

[0055] In this embodiment, the electrodes of the calcium carbide furnace are three-phase electrodes. The electrodes are inserted into the molten pool and do not touch the bottom of the furnace, so that electric arcs can be generated to heat the raw materials. Four spray guns are installed on the furnace cover of the calcium carbide furnace, and one of the spray guns is located in the three-phase At the center of the electrode, the other three electrodes are evenly distributed on the outside of the three-phase electrode, 5 / 6 radius away from the center of the horizontal interface of the calcium carbide furnace. The pipe is connected to the oxygen pressurization station through a high-pressure oxygen pipeline, the cooling water pipe is connected to the water pump, and the valve is set at the front of the spray gun. When spraying into the furnace, the pulverized coal pipeline, oxygen pipeline and valve are opened, and the pulverized coal / oxygen enters the spray gun. The pulverized...

Embodiment 3

[0058] In this embodiment, the electrodes of the calcium carbide furnace are three-phase electrodes. The electrodes are inserted into the molten pool and do not touch the bottom of the furnace, so that electric arcs can be generated to heat the raw materials. Four spray guns are installed on the furnace cover and side walls of the calcium carbide furnace, of which one The spray gun is located at the center of the three-phase electrode, and the other three electrodes are evenly distributed on the horizontal circumference of 1 / 2 of the side wall height. The pressure station is connected by a high-pressure oxygen pipeline, the cooling water pipe is connected with the water pump, and a valve is set at the front of the spray gun. The air is ejected from the spray gun, and the cooling water cools down the spray gun on the outer wall of the spray gun.

[0059] When the calcium carbide charge is loaded into the calcium carbide furnace, adjust the electrode and the spray gun so that th...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/32C01B32/942
Inventor 邓君薛逊曹志成张岚范志辉孟嘉乐唐敬坤吴道洪
Owner SHENWU ENVIRONMENTAL TECH CO LTD
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