Draught fan dewaterer and boiler room

Abstract

The invention relates to the technical field of boilers, in particular to a draught fan dewaterer and a boiler room. The draught fan dewaterer comprises a tank, a smoke inlet is arranged at the upper end of the tank, a smoke outlet is arranged on the left side of the tank, a flow guide plate with a high left side and a low right side is arranged on the inner wall of the left side, above the smoke outlet, of the tank, and a smoke channel is formed between the upper end face of the flow guide plate and the inner wall of the right side of the tank. The draught fan dewaterer is mounted in front of a draught fan, and comprises the flow guide plate, a dewatering pore plate and a mud guard which are mounted in the tank; the flow guide plate and the dewatering pore plate work together to enable smoke, passing through the flow guide plate and the dewatering pore plate, to form 'S'-shaped rotational flow, and vapor, dust and acid are separated from the smoke according to the centrifugal principle, so that rusting and corrosion of the draught fan are avoided, the service life of the draught fan is prolonged, and working stability of the draught fan is improved; the dust is prevented from being adsorbed onto blades, eccentric rotation of impellers is avoided, normal production of enterprises is guaranteed, and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of boilers, and relates to an induced draft fan dehydrator and a boiler room. Background technique [0002] At present, whether it is a thermal power plant or a central heating boiler room using a coal-fired boiler, dust removal and desulfurization must meet the emission standards set by the national and local environmental protection departments. The dust removal and desulfurization of enterprises using coal-fired boilers in China basically follow the attached regulations. figure 1 The process shown is restricted by various factors. Most of the desulfurization uses wet desulfurization equipment. The flue gas discharged from the boiler 1 passes through the dust collector 2 and the desulfurization equipment 3, and is extracted by the induced draft fan 4, and is discharged into the atmosphere through the chimney 5. , see attached figure 1 The sulfide in the high-temperature flue gas (above 100°C) entering th...

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Problems solved by technology

[0003] The present invention provides an induced draft fan dehydrator and a boiler room, which overcomes the deficiencies of the prior art and can effectively solve the problems of rust, corrosion and short service life of the induced draft fan in the process of dust removal and desulfurization of existing coal-fired boilers , and the eccentric rotation of the impeller, resulting in severe vibration of the induced draft fan, which can only be shut down for maintenance or replacement of the impeller, which affects the normal production of the enterprise

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