Graphite purification tail gas treatment device and process

Abstract

The invention discloses a graphite purification tail gas treatment device and process. The treatment device includes a dry dust collector, a washing tower, a washing liquid pool, and an induced draft fan. The exhaust port of the dry dust collector is connected with the air inlet of the washing tower, and There are several nozzles in the tower, and the nozzles are all connected to the washing liquid pool through the washing liquid circulation pump, and the liquid outlet of the washing tower is connected to the washing liquid pool. The air port is connected with the air inlet of the packed absorption tower, and there is an intermediate storage tank in the packed absorption tower under the packing, the inlet of the intermediate storage tank is connected with the alkali distribution pool through the lye pump, and the outlet of the intermediate storage tank is circulated through the absorption liquid The pump is connected with the liquid inlet of the packed absorption tower, and the induced draft fan is connected with the exhaust port of the packed absorption tower. The invention has the advantages of sufficient chlorine gas absorption and long operation period, can meet the requirements of environmental protection and safety, and has low investment cost.

Description

technical field [0001] The invention relates to a graphite purification tail gas treatment device and process. Background technique [0002] The purchased graphite containing 99% carbon is converted into heat energy under the action of direct current, which makes it chemically react with the strong oxidant liquid chlorine and freon in the purification furnace at high temperature to oxidize and remove a small amount of carbon dioxide contained in the graphite. Impurities, so as to achieve the purpose of graphite purification. During the reaction process, liquid chlorine and freon are added at the bottom of the purification furnace. Since the amount added is excessive, some chlorine gas that has not participated in the reaction will overflow from the top and side walls of the purification furnace. If this part of chlorine gas is not treated, it will be It will pollute the working environment, cause physical and mental harm to employees, and also easily cause safety and enviro...

AI Technical Summary

Problems solved by technology

[0007] Due to the dust entering the washing liquid circulation pool 23, a large amount of dust adheres to the blades of the induced draft fan 26, causing the impeller to be eccentric, and the phenomenon of fan vibration and displacement occurs during operation;

[0008] 3. The dust removal effect of the gravity dust collector 20 is not good, which affects the working efficiency of the turbulent ball tower 22 and also reduces the absorption effect

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