Multi-stage spray venturi desulfurization and dust removal apparatus and method thereof

Abstract

The invention relates to a desulfurization and dust removal integrated apparatus, particularly to a multi-stage spray venturi desulfurization and dust removal apparatus and a method thereof. The multi-stage spray venturi desulfurization and dust removal apparatus comprises flue gas pipes connected to both ends of a venture pipe, a desulfurizing agent conveying pipe, a desulfurization and dust removal tower with a clean flue gas outlet at the top portion, and a precipitation pool, wherein the desulfurizing agent conveying pipe is connected to a desulfurizing agent storage pool through a desulfurization and dust removal conveying pump, the flue gas pipe is tangentially connected to the bottom portion of the desulfurization and dust removal tower, a plurality of spray baffles are arranged inthe flue gas pipe connected to the inlet section of the venturi pipe, the bottom ends of the spray baffles are provided with atomizing spraying nozzles, the inlet ends of the spray baffles are connected to the desulfurizing agent conveying pipe, the bottom portion of the desulfurization and dust removal tower is provided with a liquid outlet pipe, the liquid outlet pipe is connected above the precipitation pool, and any one of the spray baffles and the adjacent spray baffle are arranged in the flue gas pipe in a staggered manner. Compared to the apparatus in the prior art, the apparatus of theinvention has advantages of simple structure, small occupation area, short flue gas channel, long gas flow stroke, convenient maintenance, low investment, high desulfurization and dust removal efficiency and the like.

Description

technical field [0001] The invention relates to an integrated desulfurization and dust removal device, in particular to a multi-stage spray venturi desulfurization and dust removal device and a method thereof. Background technique [0002] Among the various existing wet flue gas desulfurization and dust removal devices, compared with the Venturi spray desulfurization and dust removal device, the structure is simple, the investment is small, and the treatment effect is relatively high. The existing Venturi desulfurization and dust removal is generally provided with a Venturi throat on the flue gas pipe before the flue gas enters the main tower, and one or more atomizing nozzles are arranged on the same section in front of the Venturi throat to achieve The purpose of washing water and flue gas contact, exchange and mass transfer, desulfurization and dust removal. However, this kind of one-time short-term contact and exchange of washing water with flue gas is prone to shortcom...

AI Technical Summary

Problems solved by technology

However, this kind of one-time short-term contact and exchange of washing water with flue gas is prone to shortcomings such as insufficient mass transfer and short reaction time, so it is difficult to meet the current increasingly high environmental protection emission requirements, and at the same time it is necessary to design high flue gas The gas flow rate is high, so the flue gas resistance is high, the pressure loss is large, and the power consumption is high

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