A low-temperature dry distillation device for dry coke quenching

Abstract

The invention discloses a low-temperature dry distillation device for coke dry quenching, and relates to the technical field of dry distillation furnaces. The device comprises a furnace body, the sidewall of the upper portion of the furnace body is provided with a waste gas outlet, the side wall of the middle of the furnace body is provided with an air inlet, and the side wall of the lower portion of the furnace body is provided with a circulation gas inlet; the bottom of the furnace body is provided with a closing port, and the bottom of the closing port is provided with a wind locker; the furnace body is internally provided with an intermediate air cap and a lower air cap, the intermediate air cap is located above the air inlet, and the lower air cap is located at the circulation gas inlet. Circulation gas enters the circulation gas inlet in the lower portion of the furnace body, air enters the air inlet in the middle of the furnace body, in this way, the circulation gas is utilizedto cool hot semi-coke before burning and heated at the same time; by recycling potential heat of the hot semi-coke, the energy and water are saved, coke quenching water is omitted, the water pollution is avoided, the quality of semi-coke products is improved at the same time, and the economic benefits are increased.

Description

technical field [0001] The invention relates to the technical field of carbonization furnaces, in particular to a low-temperature carbonization device for dry coke quenching. Background technique [0002] At present, internal thermal low-temperature dry distillation of low-rank coal and oil shale is widely used, and the method of wet coke quenching is commonly used, that is, the heated semi-coke (500-600°C) is cooled with water, and then Out of the oven to complete the dry distillation operation. If the hot semi-coke is not cooled in time after it comes out of the furnace, it will burn in the air. This coke quenching method has the following disadvantages: the latent heat of semi-coke cannot be recycled; it consumes a lot of water (most of the site water resources are scarce); the water pollution is serious (if the water in the coke quenching pool is not drained during work , the water will become more and more concentrated, which will affect the normal operation of the eq...

AI Technical Summary

Problems solved by technology

This coke quenching method has the following disadvantages: the latent heat of semi-coke cannot be recycled; it consumes a lot of water (most of the site water resources are scarce); the water pollution is serious (if the water in the coke quenching pool is not drained during work , the water will become more and more concentrated, which will affect the normal operation of the equipment, and the discharge will cause water pollution); the product semi-coke contains a lot of water, which greatly affects its value. Generally speaking, the water content increases by about 15%. The price of semi-coke will be reduced by 25% to 40%

Images