Sealed movable green coke drying process method and system

Abstract

The invention provides a sealed movable green coke drying process method and a system. The process method includes the following steps that an inlet of an adjustable combustion device is connected with a gas pipeline and an outlet of a combustion fan, and fuel and primary air generate high-temperature flue gas through the adjustable combustion device; the high-temperature flue gas is mixed with secondary air in a hot air device to generate medium-and-low-temperature flue gas at 200-300 DEG C; the medium-and-low-temperature flue gas and wet green coke are subjected to countercurrent direct heatexchange in a vertical drying kiln; the waste gas subjected to heat exchange is purified by a dust remover and then is emptied through a chimney; and the finished green coke is conveyed out through aconveying device. The hot air device can provide the medium-and-low-temperature flue gas at 200-300 DEG C for the process, the safe drying temperature is provided for the vertical drying kiln, and the coke powder is prevented from being burnt due to overheating. By means of a control system, production information of all the devices can be interconnected and intercommunicated, safe and reliable automatic operation can be achieved, unattended operation can be achieved on site, and the system is good in drying effect, good in adjustability, easy to operate and maintain, low in device troubleshooting rate and low in environmental pollution.

Description

technical field [0001] The invention relates to the technical field of production equipment for needle coke and battery anode materials, in particular to a sealed and mobile raw coke drying process method and system. Background technique [0002] Needle coke is a high-quality material for manufacturing high-power and ultra-high-power electrodes. Graphite electrodes made of needle coke have strong thermal shock resistance, high mechanical strength, good oxidation performance, low electrode consumption and large allowable current density, etc. advantage. In the smelting industry, the smelting efficiency can be increased by 3 times, the power consumption can be reduced by 30%, and the electrode consumption speed can be reduced by 30%, which has broad market prospects. In recent years, raw needle coke has become a raw material for battery anode materials, and the market demand is increasing day by day. [0003] With the iron and steel enterprises gradually getting rid of the d...

AI Technical Summary

Problems solved by technology

At present, domestic needle coke production enterprises mainly use rotary kiln to dry raw coke. The rotary kiln has the advantages of large production capacity and small fluid resistance, but its disadvantages are also very obvious, including: large equipment volume, large one-time investment, and large floor area , small filling factor, large heat loss, high troubleshooting rate, low heat energy utilization rate, high drying moisture, etc.

Images