Calcium desulphurization washing condensation demisting structure and operation method thereof

Abstract

The invention provides a calcium desulphurization washing condensation demisting structure and an operation method thereof. The content of dust in flue gas can be reduced through dual effects of washing condensation and demisting. The structure comprises a desulfurizing tower, a washing spray pipe, a washing nozzle, a demister, a gas-liquid separation device, a return pipe, a liquid supplementingpipe, a liquid supplementing electric valve, an inlet electric valve, a washing centrifugal pump, a circulating pipe, an outlet electric valve, a liquid outlet pipe, a liquid outlet electric valve, acirculating cooling water inlet pipeline, a circulating cooling water outlet pipeline and a cooler. Circulating cooling water enters a cooler through the circulating cooling water inlet pipeline to condensate water washing liquid and then is discharged through the circulating cooling water outlet pipeline. The desulfurized saturated wet flue gas is cleaned by the condensed water washing liquid, part of vaporous water in the wet flue gas can be separated out under the washing effect, and meanwhile, soluble salt in the water can be brought out. On the other hand, fine liquid drops and fine dustin the wet flue gas are gathered and increased through active condensation, so that the wet flue gas is favorably intercepted and removed by the subsequent demister.

Description

Technical field [0001] The invention relates to a calcium method desulfurization water washing condensation defogging structure and its operation method, and belongs to the field of wet desulfurization. Background technique [0002] Ultra-low emissions refers to the efficient collaborative integrated treatment technology of multiple pollutants used in coal-fired boiler flue gas in thermal power plants, which has now been extended to non-electricity industries. At present, ultra-low emission technology for desulfurization and denitrification has matured. The most widely used ultra-low emission technology for dust is the wet electricity process. The dust is charged through high-voltage corona discharge. The charged dust reaches the dust collection pipe under the action of electric field force. , use regular flushing to remove dust with the flow of flushing water. Wet power must work under wet flue gas conditions. Improper operation or incorrect program interlocking may cause ...

AI Technical Summary

Problems solved by technology

Wet electricity must work under the condition of wet flue gas. If the operation is improper or the program chain is wrong, it may cause the wet electricity device to stop operating, or even the risk of fire, and the power consumption of wet electricity operation is large, no matter it is horizontal Or vertical wet electricity layout, both need a lot of steel structure

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