Technique and device for coproducing carbide slag cement in a dry-method acetylene process

Abstract

The invention provides a technique and device for coproducing carbide slag cement in a dry-method acetylene process. The device comprises a carbide crushing system, a dry-method acetylene reaction system and a cement production system. The technique is implemented in a way that: liquid carbide from a carbide furnace is sent to a seal device under the action of gravity; the seal device is provided with an air flow nozzle; pressurized carbon dioxide is introduced to crush the liquid carbide; the crushed carbide is subjected to iron removal, crushing and iron removal, and sent to a dry-method acetylene reactor again; the metered carbide with small particle sizes falls into the dry-method acetylene reactor; the second section of the partition of the dry-method acetylene reactor is provided with an opening; eolian sand or furnace slag is added; and under the action of a stirring device, the eolian sand or furnace slag and the carbide slag are discharged out of the dry-method acetylene reaction system through the outlet of the dry-method reactor, and are sent to the cement production system. The invention solves the problems of high carbide crushing cost, incomplete reaction of carbide at the dry-method acetylene station, waste of carbide resources, low acetylene yield, high blockage tendency of the reactor, complex technique and the like.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a process and a device for dry-process acetylene co-production of carbide slag cement. Background technique [0002] There are two methods for industrial production of acetylene, namely calcium carbide method and hydrocarbon cracking method. Foreign countries have basically turned to the hydrocarbon cracking method in the 1970s. The dry-process acetylene involved in the calcium carbide method has attracted widespread attention at home and abroad due to its small water consumption, low consumption of calcium carbide, low water content in carbide slag, and obvious comprehensive utilization benefits. Putting it into industrial application, it is characterized by using small calcium carbide (particle size less than 3mm) as raw material, spraying water slightly larger than the theoretical water amount, and obtaining the by-product calcium hydroxide with a water content of about 10% and ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art such as high cost of calcium carbide crushing, incomplete reaction of calcium carbide in the dry acetylene section, waste of calcium carbide resources, low yield of acetylene, easy bloc

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