Thermal feeding method and device for calcium carbide furnace

Abstract

The invention relates to a thermal feeding device for a calcium carbide furnace. The device is used for directly feeding calcium oxide of 400-500 DEG C discharged from a lime kiln stewing tank into a dump truck without cooling, crushing or screening, carrying into an improved annular stock cabin through a track and a crane, mixing with coke in a feed pipe, and feeding a mixture into an enclosed calcium carbide furnace for producing calcium carbide. Due to the adoption of a process disclosed by the invention, the conveying and feeding ways of calcium carbide furnace charge are improved, and the conveying and feeding safety of the calcium carbide furnace charge is enhanced; and meanwhile, the temperature of calcium oxide entering the calcium carbide furnace can be up to 400-500 DEG C, so that heating time in the calcium carbide furnace is reduced, and the energy consumption of the calcium carbide furnace is lowered.

Description

technical field [0001] The invention relates to a calcium carbide production method and equipment, in particular to a calcium carbide furnace hot feeding method and device. Background technique [0002] The existing calcium carbide furnace feed is cold feed, that is, after the calcium oxide produced by the lime kiln is cooled to room temperature, it is crushed, screened, and measured, mixed with the treated coke in proportion, and conveyed by belt conveyor and screw. Machines, elevators and other equipment are sent to the ring feeder of the calcium carbide furnace into the furnace material storage hopper, and are thrown into the calcium carbide furnace through the feeding pipe. In this process, the high-temperature calcium oxide just out of the kiln must first be cooled from 400-500°C to room temperature for transportation, and after entering the calcium carbide furnace, it must be heated to 1900-2200°C by arc heat and resistance heat, which greatly wastes energy. The parti...

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Problems solved by technology

In this process, the high-temperature calcium oxide just out of the kiln must first be cooled from 400-500°C to room temperature for transportation, and after entering the calcium carbide furnace, it must be heated to 1900-2200°C by arc heat and resistance heat, which greatly wastes energy. The particle size of the calcium oxide just out of the kiln is between 30 and 50mm, which meets the feeding requirements of the sealed calcium carbide furnace, but after a long period of storage, it will absorb water and interact with CO in the air. 2 Agglomeration caused by such reactions requires crushing and screening before entering the calcium carbide furnace; in addition, the conveying process of the calcium carbide furnace is not airtight, which is likely to cause dust pollution; the belt conveyor is easy to slip or get stuck, causing danger; the original annular silo is poorly sealed , it is easy to cause CO, H in the calcium carbide furnace 2 Leakage of flammable gas can cause fire and explosion, poor safety

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