Method for controlling in-out materials in process of producing acetylene by dry method

Abstract

The invention relates to a method for controlling in-out materials in the process of producing acetylene by a dry method. In the control method, a frequency conversion helical conveyor is used as a raw material calcium carbide metering device, a water flow meter is used as a water metering device, and a current detection device is arranged on a stirring device; a frequency converter blocking valve control system is used as a deslagging control device, the addition amount of calcium carbide is linked with the rotating speed of the frequency conversion helical conveyor, the rotating speed of the frequency conversion helical conveyor is linked with a water adjustment and control system, and the current of a stirring motor is linked with a frequency converter blocking valve; and a microcomputer automatic in-out material control system is subjected to vector adjustment to control the accurate ratio of raw material calcium carbide to water and the amount of calcium carbide slag in an acetylene generation device, so that a system can be stably operated.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering and relates to a method for controlling incoming and outgoing materials, in particular to a method for controlling incoming and outgoing materials in dry acetylene production. Background technique [0002] The production of acetylene by dry method generally utilizes the characteristics that the reaction speed of fine particle calcium carbide and water is fast and the vaporization of water can take away a large amount of heat of reaction. A slight excess of water is used to react with fine particle calcium carbide, so that the calcium carbide in the wet reactor is changed into an aqueous solution. The state of the reaction forms a reaction state in which gaseous substances and powdery solid substances are mixed, so that the produced calcium carbide slag is in the form of powder, and the reaction speed is much faster than that of the wet method, and the heat released by the reaction is q...

AI Technical Summary

Problems solved by technology

When the ratio of calcium carbide to water is too large, the reaction of calcium carbide is incomplete, and the residual calcium carbide brings safety hazards and high raw material consumption problems to the subsequent process; when the ratio of calcium carbide to water is too small, the moisture content of calcium carbide slag is too high, resulting in The slag has problems such as sticking to the wall, clogging pipes, and difficulty in slag discharge in the equipment; at the same time, if there is too much calcium carbide slag in the dry acetylene reactor, the stirring device will be stopped, resulting in the shutdown of the reaction system; if the dry acetylene reactor If the amount of carbide slag is too small, the acetylene gas generated by the reaction system will leak out of the reaction device through the gas lock valve, causing potential safety hazards

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