Flue gas dust removal and recovery experimental device and method for large coal-fired boiler in thermal power plant

Abstract

The invention belongs to the technical field of flue gas dust removal experimental devices, and discloses a flue gas dust removal and recovery experimental device and method for a large coal-fired boiler in a thermal power plant. The experimental device is characterized in that the device comprises a fluoroplastic heat exchanger; the front face of the fluoroplastic heat exchanger is connected witha front-end signal collector, a smoke mixer, a fan, a smoke generator and a steam generator; the rear face of the fluoroplastic heat exchanger is connected with a rear-end signal collector and a chimney; the bottom of the fluoroplastic heat exchanger is connected with a sewage tank; and the front-end signal collector, the rear-end signal collector and the fluoroplastic heat exchanger are connected with an information processing device. The flue gas dust removal and recovery experimental device for the large coal-fired boiler in the thermal power plant provides a research and development way for flue gas treatment and low-temperature waste heat recovery of the large coal-fired boiler of the coal power and the steel, and provides a detailed and practical experimental platform for managementand standard establishment in the aspect of ultra-low emission and energy conservation in the industry.

Description

technical field [0001] The invention belongs to the technical field of flue gas and dust removal experimental devices, and in particular relates to an experimental device and method for removing and recovering flue gas dust from a large coal-fired boiler in a thermal power plant. Background technique [0002] With the rapid development of the national economy and the continuous improvement of people's living standards. Environmental protection and energy saving have become a national policy, and the flue gas treatment and low-temperature waste heat recovery of large boilers in the coal power and iron and steel industries are a key task. At present, after electrostatic bag dust removal in coal power plants, the waste heat at around 140°C has not been recycled, and a large amount of groundwater has to be used to reduce the waste heat of flue gas at around 140°C to 90–100°C, which is to reach the acid dew point temperature, and then Enter the wet desulfurization process. This...

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Problems solved by technology

However, there is a lack of a systematic experimental platform for the study of coal power and steel sintering flue gas treatment. Therefore, it is urgent to design a system to study the dust removal efficiency, water saving and environmental protection of fluoroplastic heat exchangers under actual working conditions. Waste heat recovery efficiency speeds up the pace of governance for power plants and the steel industry

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