Flue gas processing system and flue gas processing method capable of enabling low-low temperature electrostatic precipitation to be combined with water pollination type GGH (Gas Gas Heater)

Abstract

The invention relates to a flue gas processing system and a flue gas processing method capable of enabling low-low temperature electrostatic precipitation to be combined with a water pollination type GGH (Gas Gas Heater). At present, a flue gas processing system and a flue gas processing method which are capable of meeting a new emission standard and preventing the corrosion of a chimney are not provided. The flue gas processing system disclosed by the invention is characterized by comprising a terminal controller, a steam regulating valve, a steam auxiliary heater, a water inlet pipe, a water return pipe, a steam inlet pipe and a steam outlet pipe, wherein the steam auxiliary heater is arranged on the water inlet pipe, the steam inlet pipe and the steam outlet pipe are both connected to the steam auxiliary heater, and a flue gas temperature detector and the steam regulating valve are electrically connected with the terminal controller. The flue gas processing method disclosed by the invention is characterized by comprising the following steps of carrying out heat exchange between high-temperature flue gas in a flue gas duct and a low-temperature working medium in a flue gas heat recycling device when the high-temperature flue gas in the flue gas duct flows through the flue gas recycling device, and carrying out heat exchange between a high-temperature working medium and low-temperature purified flue gas which is output through a desulfurizing tower and a demister in the flue gas duct after the low-temperature working medium is heated into the high-temperature working medium. According to the flue gas processing system and the flue gas processing method, disclosed by the invention, the new emission standard is met, and the corrosion of the chimney is prevented.

Description

technical field [0001] The invention relates to a flue gas treatment system and a flue gas treatment method for a thermal power plant, in particular to a flue gas treatment system and a flue gas treatment method combined with low-temperature electric dust removal and water-medium GGH, which are mainly used for SO in flue gas of thermal power plant 3 Carry out effective removal, effective control of PM2.5, and solve problems such as white smoke, smoke and rain. Background technique [0002] On the one hand, the state requires to speed up the revolution of energy production and consumption, and further improve the level of efficient and clean development of coal power. Three ministries and commissions have formulated the 2014-2020 "Coal Power Energy Conservation and Emission Reduction Upgrading and Transformation Action Plan". According to the guiding ideology and action goals of the action plan, by 2020, the average coal consumption for power supply after transformation of a...

AI Technical Summary

Problems solved by technology

As a result, the present invention can not only effectively control the emission concentration of smoke and dust to meet the new national emission standards, but also prevent the chimney from corrosion, white smoke, and smoke and rain washing down, etc.

Images