Nuclear radiation ammonia method flue gas desulfurization process and equipment

Abstract

The invention relates to a nuclear radiation ammonia method flue gas desulfurization process and equipment. The process comprises the following steps of: carrying out cooling and humidifying and dust-removing treatment on sulfur-containing nitrogen-containing flue gas; sending into a radiating system, enabling O2, H2O and N2 in the flue gas to mutually collide with high-energy electron beams generated by an electron accelerator to generate strong oxidizing property active particles for oxidizing SO2 and nitric oxides to generate sulfuric acid and nitric acid; and sending the flue gas into a desulfurizing tower, enabling the flue gas to be in countercurrent contact with a liquid ammonia-containing circulating solution for absorbing liquid drops, water mist and volatilized ammonia which are carried in the flue gas and also absorbing the sulfuric acid and the nitric acid to generate ammonium sulfate and ammonium nitrate, and discharging purified flue gas from a flue gas outlet. The equipment comprises the radiating system and the desulfurizing tower, wherein the radiating system comprises a radiating reactor and the electron accelerator arranged above a reaction region of the radiating reactor. The removal rates of acidic materials and the nitric oxides in the flue gas are as follows: the removal rate of SO2 is not less than 98 percent, and the removal rate of the nitric oxides is not less than 70 percent. The side products are ammonium sulfate and ammonium nitrate fertilizers, thus the utilization rate of ammonia is improved and the industrial application prospect is better.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment technology and equipment, in particular to a nuclear radiation ammonia flue gas desulfurization process and equipment. Background technique [0002] The flue gas desulfurization process uses alkaline substances to absorb acidic substances in the air, namely sulfur dioxide, and make them into sulfates that are easy to separate. [0003] Wet flue gas desulfurization is the most important and widely used treatment process for purifying sulfur-containing flue gas, accounting for about 80% of the total treatment. Wet flue gas desulfurization is to use alkaline liquid to wash the sulfur dioxide gas in the flue gas. In recent years, ammonia desulfurization technology has attracted much attention due to its unique technical advantages such as compact structure, high desulfurization efficiency, and resource utilization. It is especially suitable for dust removal and desulfurization of flue gas...

AI Technical Summary

Problems solved by technology

However, in the implementation process of this method, the conversion rate of sulfur dioxide into sulfur trioxide is slow, and the utilization rate and conversion rate of ammonia gas are not high, and most of the nitrogen oxides are not removed, so the desulfurization and denitrification efficiency of flue gas not very high

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