Desulfurization and denitrification method of desulfurization and denitrification system

Abstract

The invention discloses a desulfurization and denitrification method of a desulfurization and denitrification system. The system comprises a tower body, wherein a flue gas inlet is formed in the lower part of the tower body; an oxidizing section is arranged at a lower position, corresponding to the flue gas inlet, in the tower body; a concentrating section, an absorbing section, a purifying and water washing section and a defogging section are sequentially arranged from bottom to top at an upper position, corresponding to the flue gas inlet, in the tower body. The invention also discloses a desulfurization and denitrification method of the desulfurization and denitrification system. The desulfurization and denitrification system provided by the invention is ingenious and reasonable in structural design, effectively solves the problem of high operation cost, and is stable in process; absorption, concentration and crystallization are carried out integrally, no any waste liquid is discharged, ammonia fugitive emission is limited, and the problems of ammonia escape and aerosol are thoroughly solved. The desulfurization and denitrification method provided by the invention is simple and easy in process steps, not only realizes the effects of desulfurization and denitrification, but also has the characteristics of high desulfurization and denitrification efficiency, energy conservation and environment protection, low cost and stable operation safety, and can make waste profitable.

Description

[0001] This application is a divisional application of a Chinese invention patent application filed on December 3, 2013 with the application number 201310634675.7 and the invention name is a desulfurization and denitration system and a desulfurization and denitration method thereof. technical field [0002] The invention belongs to the technical field of desulfurization and denitration, and in particular relates to a desulfurization and denitration system and a desulfurization and denitration method thereof. Background technique [0003] The integrated technology of desulfurization and denitrification widely used at home and abroad today is mainly the combination of wet flue gas desulfurization and selective catalytic reduction or selective non-catalytic reduction technology. Wet flue gas desulfurization is commonly used calcium method using lime or limestone, and the desulfurization efficiency can reach 90%. The disadvantage is that the project is huge, the initial investmen...

AI Technical Summary

Problems solved by technology

The disadvantage is that the investment in process equipment is large, the flue gas needs to be preheated, and the equipment is easy to corrode, etc.

Moreover, the process is complicated, the cost is high, and the operation is difficult, so it is difficult to widely popularize and apply

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