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Wet method fume gas desulfurizing method and device

A flue gas and wet technology, applied in the field of flue gas desulfurization, can solve the problems of numerous supporting equipment, increased investment and operating costs of system equipment, and huge complete desulfurization system, and achieves good desulfurization effect.

Inactive Publication Date: 2005-06-29
BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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  • Abstract
  • Description
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Problems solved by technology

For this reason, these methods all need to set up a set of desulfurization agent preparation, storage, transportation, and desulfurization by-product collection and removal devices in the desulfurization process system, so that the complete desulfurization system is huge and there are many supporting equipment. In addition, desulfurization agents need to be purchased. Cause system equipment investment and operating costs to increase

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  • Wet method fume gas desulfurizing method and device
  • Wet method fume gas desulfurizing method and device
  • Wet method fume gas desulfurizing method and device

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Embodiment Construction

[0036] The present invention adopts the wet flue gas desulfurization method and device that the coal-fired boiler itself discharges alkaline substances, and is equipped with a boiler with an evaporation capacity of 35t / h, and the treatment flue gas volume is 100,000m 3 / h boiler flue gas.

[0037] As shown in the figure: the desulfurization method is:

[0038] 1) Dissolving the alkaline substances in the coal slag, and forming a cycle of slag washing water: the slag washing water is drawn from the rear of the alkaline substance dissolution tank 14 through the slag washing pump 13, so that the ash generated after the coal combustion in the boiler is flushed The slag water flows into the alkaline substance dissolution tank 14 together, and is mixed with the acid gray water discharged from the wet flue gas desulfurization dust collector 2. At the same time, a cycle of flushing slag water is formed;

[0039] 2) Primary filtration: the above-mentioned mixture of ash water and aci...

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Abstract

The invention unfurls a kind of way of taking off the sulphur by wet smoke and its equipment. The way uses the alkaline object from coal burnt to take off the sulphur. The equipment involves: removing dusk machine of wet smoke, removing mist machine of taking off water, and also include pond for taking off the alkaline object, water pond and the pond of taking off the sulphur. In the removing dusk machine of wet smoke, there are chemical reaction between smoke and the liquid for taking off the sulphur, taking off the pollution of the sulphur into acid water, used for recycling. The smoke is brought to the air after taking off the mist. Start smoke-water separated machine at certain times to prevent the system wearing knot, eject the dusk water after removing them. The way and the equipment have the strong function between liquid and air, using little water and eject little too, large field to use, eject dusk while taking off the sulphur, cost little when separating and investing.

Description

Technical field: [0001] The invention relates to the technical field of flue gas desulfurization applicable to large and medium-sized coal-fired industrial boilers, in particular to a wet-type flue gas desulfurization method and device for large and medium-sized coal-fired industrial boilers. Background technique: [0002] As we all know, there are many ways to remove sulfur dioxide in coal-fired flue gas, including limestone / lime-gypsum method, double alkali method, flue gas circulating fluidized bed method and other flue gas desulfurization technologies. In these methods, limestone (CaCO 3 ), lime (CaO), caustic soda (NaOH) and other desulfurization agents are prepared into desulfurization liquid, which is injected into the desulfurization reactor to react with sulfur dioxide in the flue gas to generate sulfite and sulfate and remove them. For this reason, these methods all need to set up a set of desulfurization agent preparation, storage, transportation, and desulfurizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78
Inventor 庄德安韩国君邓九兰齐金彦薄以匀曾德馨程秀菊朱晨闫静
Owner BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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