Distributed control type steam-light discharge process for desulfurizing fume by semi-wet method

Abstract

A distributed control type stream-light discharge process for desulfurizing fume is disclosed. Its wet discharge reactor is composed of thermal chemical reaction region and discharge plasma chemical reaction region with discharging electrode and receiving electrode. Said discharging electrode is connected with high-voltage power supply to generate stream-light discharge. Said power supply is controlled in distributed mode. After boiler fume goes through thermal chemical reaction and discharge plasma chemical reaction, the gas pollutant is removed and the liquid by-product is generated and dried to obtain dry powder. Its advantages are high power and long service life of power supply, low noise, and low cost.

Description

Technical field: [0001] The invention relates to a method for gaseous pollutants in flue gas, in particular to a semi-wet method for removing gaseous pollutants by means of streamer discharge to generate non-thermal plasma. Background technique: [0002] As we all know, the key equipment for removing gas pollutants by streamer discharge is pulse power supply and reactor. At present, most pulse power supplies use thyratrons or spark gap switches. Thyratrons have relatively high power, but their lifespan is short, and spark gaps have low power and high noise. The pulse repetition rates of both are low, below 1000 times per second, generally in the audio frequency range of around 200Hz, and the noise pollution is serious. At present, neither of them can realize industrial application. Most of the existing reactors are dry-type, and the reactor generally follows the structure and shape of the electrostatic precipitator. It has not realized the optimization of the time-space dis...

AI Technical Summary

Problems solved by technology

At present, most pulse power supplies use thyratrons or spark gap switches. Thyratrons have relatively high power, but their lifespan is short, and spark gaps have low power and high noise.

The pulse repetition rate of both is low, less than 1000 times per second, generally in the audio frequency range of about 200Hz, and the noise pollution is serious. At present, neither of them can realize industrial application

Most of the existing reactors are dry-type, and the reactor generally follows the structure and shape of the electrostatic precipitator. It has not realized the optimization of the time-space distribution of the streamer discharge, and has not exerted the efficiency of activating the heterogeneous reaction. Therefore, this kind of reactor has a large volume and high efficiency Low, the reaction product is difficult to collect due to cohesion, and a continuous and stable process cannot be formed, and the investment cost and operating cost of the system equipment are high

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