Tail gas treatment device of high-temperature sintering furnace for graphite production

Abstract

The invention discloses a tail gas treatment device of a high-temperature sintering furnace for graphite production. The tail gas treatment device comprises a spraying tower, a gas inlet pipe for fluegas to enter is arranged on the spraying tower, a blanking device is arranged at the bottom of the spraying device, a liquid outlet pipe for discharging cooling liquid and a liquid spraying pipe forconveying the cooling liquid are arranged on the side wall of the spraying tower, the liquid outlet pipe is positioned under the liquid spraying pipe, and a heating device for heating the inner side wall of the spraying tower is also arranged on the spraying tower. The tail gas treatment device disclosed by the invention has the benefits that the zero pollution discharge is realized, grease, floating oil and waste gas can be effectively treated, the energy consumption is low, and the efficiency is high; tail gas in the whole sintering furnace is treated by adopting a physical method, so that the use of chemical materials is reduced. Therefore, the treatment mode can be used for a long term, and the tail gas treatment cost is reduced; through a water circulation treatment device, the condensing effect of an aqueous solution is ensured, and water recycling is realized.

Description

technical field [0001] The invention relates to the technical field of graphite production, in particular to a high-temperature sintering furnace tail gas treatment device for graphite production. Background technique [0002] Needle coke is the main raw material for the production of high-power (HP) and ultra-high-power (UHP) graphite electrodes, which can be divided into petroleum-based needle coke and coal-based needle coke. Due to the good graphitization performance of needle coke, the HP and UHP graphite electrodes produced by it have excellent electrical and thermal conductivity, thermal shock resistance and oxidation resistance, which can meet the requirements of high current density in large-capacity electric arc furnaces and rapid cooling. In the rapid heating state, there are high mechanical strength and other smelting quality requirements, which are incomparable in terms of performance of graphite electrodes produced by ordinary coke. [0003] In the process of p...

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Problems solved by technology

[0003] In the process of producing graphite with needle coke, high-temperature sintering is an essential and important process. Whether it is petroleum-based needle coke or coal-based needle coke, after high-temperature sintering, the composition and content of the tail gas are different. Fixed, and the composition is extremely complex, containing a large amount of harmful gases and gaseous oily substances, such as sulfide gas, gaseous asphalt, the existing treatment process is to install a very long pipeline at the exhaust gas outlet of the high-temperature sintering furnace, and pass the high-temperature gas into the In the pipeline, with the transportation of the pipeline, the gaseous substances condense and pile up in the pipeline, while other substances are discharged at will. Under the increasingly stringent requirements of the country for environmental protection, this unenvironmentally friendly exhaust method will be eliminated. Prohibited, so it is necessary to develop a treatment device for graphite production high-temperature sintering furnace exhaust gas

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