Device for removing SO3 through flue injection of dry powder adsorbent

Abstract

The invention relates to the technical field of coal-fired flue gas pollutants and specifically relates to a device for removing SO3 through flue injection of a dry powder adsorbent. The device comprises a storage tank used for storing the dry powder alkaline adsorbent, wherein a feeding hole and an exhaust hole are formed in the top of the storage tank; the exhaust hole is connected with a gas inlet of a storage tank filter through a storage tank gas conveying pipe; the middle part of the storage tank gas conveying pipe is connected with a first pressure gas source through a pipeline with a first pneumatic stop valve; a micro positive pressure device used for keeping micro positive pressure in the storage tank is mounted on the upper part of the storage tank; the lower part of the storage tank is of conical hopper shape with downward taper angle; a storage tank discharging hole is arranged at the bottom of the storage tank; a pneumatic feeder is arranged at the storage tank discharging hole; a weighting tank is arranged under the pneumatic feeder; a discharging hole of the pneumatic feeder is connected with a feeding hole at the top of the weighting tank through a pneumatic feeder delivery pipe; the pneumatic feeder delivery pipe is connected with a second pressure gas source through a pipeline with a stop valve; a weighting tank exhaust hole is arranged at the top of the weighting tank.

Description

technical field [0001] The invention relates to the technical field of air pollutant control, in particular to a dry powder adsorbent flue injection for removing SO 3 equipment. Background technique [0002] Coal-fired thermal power generation is the main form of electric energy production in my country at present. Statistics show that my country's thermal power generation accounts for more than 80% of the total power generation, of which coal-fired power installed capacity accounts for 75% of the total capacity. my country's energy disposition objectively determines the electricity supply pattern dominated by coal-fired thermal power generation It won't change anytime soon. The flue gas emitted by coal-fired power plants contains a large amount of sulfide, NOx and heavy metals, among which SO 2 And the proportion of NOx in flue gas exceeds 50%. In addition, the primary and secondary PM2.5 produced are important sources of industrial pollution, and the control of air poll...

AI Technical Summary

Problems solved by technology

The physical and chemical properties of the slurry are different from those of the dry powder, and the device system is very different. At the same time, the realization of the slurry injection device is more complicated and the reliability is poor.

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