Gas inlet regulating method of double-cyclone dust collector

Abstract

The invention relates to a method for regulating a gas inlet regulating device of a double-cyclone dust collector, including the following steps: (a) a gas flow rate monitoring unit (4) feeding back measured air inlet pipeline flue gas flow rate of the double-cyclone dust collector (8) in real time to a control system (7); (b) the control system (7) issuing a command to a valve plate opening drive device (3) according to a preset flue gas flow rate range; (c) the valve plate opening drive device (3) regulating the opening of a first valve plate (1-a) and a second valve plate (1-b), regulating the cross section of an air inlet of the double-cyclone dust (8) or turning off the air inlet, further changing the flue gas flow rate to the preset flow rate range; (d) when the flue gas flow rate is regulated within the preset flue gas flow rate range, the valve plate opening drive device (3) stopping working. The regulating method of the invention can optimize the working condition at the air inlet of the double-cyclone dust collector and improve the efficiency of the double-cyclone dust collector under different working conditions.

Description

technical field [0001] The invention relates to a method for adjusting an air inlet of a double cyclone dust collector, which is mainly used in an acid regeneration unit of a spray roasting method, and is also applicable to other cyclone dust removal equipment used for processing dust-containing flue gas. Background technique [0002] Acid regeneration by spray roasting method is a resource recovery technology for waste acid produced in the strip pickling process, and it is widely used at present. The double cyclone dust collector is an important equipment of the acid regeneration unit of the spray roasting method, which is mainly used to separate the iron oxide powder particles in the roasting flue gas. The equipment's separation efficiency of iron oxide powder will directly affect the dust treatment effect of downstream process equipment and the dust concentration in the exhaust gas from the chimney of the scrubber. [0003] Among the many factors affecting the dust remo...

AI Technical Summary

Problems solved by technology

However, the cross-section of the air inlet of the double-cyclone dust collector is constant, so it is difficult to ensure that the air inlet of the double-cyclone dust collector enters the air at the best air velocity, resulting in unstable dust separation effect of the double-cyclone dust collector

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