Pulse dust removal system of submerged arc furnace

Abstract

The invention relates to the technical field of dust removal systems, and discloses a submerged arc furnace pulse dust removal system which comprises two electric furnaces, a smoke discharging barrel and a control system, each electric furnace is provided with a smoke outlet, the smoke outlets of the electric furnaces are connected with pulse bag type dust collectors, the two pulse bag type dust collectors are connected with the smoke discharging barrel, and the smoke discharging barrel is connected with the control system. A pressurizing fan is arranged at a smoke outlet of each electric furnace, a double-support fan is arranged at the joint of the pulse bag type dust collector and the smoke discharging barrel, the electric furnaces are connected with a preheating boiler, the preheating boiler is connected with the pulse bag type dust collector, and bypass coolers are arranged at the joints of the two electric furnaces and the two waste heat boilers. According to the scheme, the negative-pressure pulse small cloth bags are adopted, an ash conveying pipeline of the negative-pressure pneumatic ash removal system is closed, the pressure in the pipeline is lower than the atmospheric pressure, dry ash is conveyed to an ash silo in the pipeline, and the dry ash flows in the closed vacuum pipeline and does not leak, so that the environment is protected.

Description

technical field [0001] The invention belongs to the technical field of dust removal systems, in particular to a pulse dust removal system for a submerged arc furnace. Background technique [0002] The dust removal system of the submerged arc furnace in the nickel iron plant is mainly for the treatment of the high temperature flue gas generated in the furnace during the production process. It mainly includes two parts: the hot air pipe and the settling chamber. On the one hand, it collects heat and on the other hand collects dust. Remove more than 80% of soot. [0003] The exhaust gas treatment method is positive pressure cyclone dust collector + bag filter, the overall system does not meet the conditions for installing online equipment, and the exhaust gas purification is not complete. There is a phenomenon that is not absolutely sealed, and the long-term high temperature in the production process damages the furnace cover, causing part of the flue gas to leak out, causing ...

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Problems solved by technology

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a submerged arc furnace pulse dedusting system, which effectively solves the problem that the tail gas treatment method is positive pressure cyclone dust collector + bag filter, and the overall system does not meet the requirements of online equipment. Due to the unsuitable conditions, the tail gas purification is not complete, because the openings such as feeding pipes and inspection holes are set on the cover of the submerged arc furnace, it is not absolutely sealed, and in addition, the long-term high temperature damages the cover during the production process. Caused part of the flue gas to leak out, causing the problem of polluting the environment

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