Flyash electrostatic decarbonization method and device

Abstract

A process for electrostatic decarbonization of flyash containing 0.04-1 kg / cu.m of dust features that the flyash is delivered into a negative-electrode high-voltage electrostatic separator at 0-1800 cu.m / h of air flow. As the carbon and inorganic dust in the flyash have different electric properties, they are adsorbed by different plate electrodes with different polarities in opposite directions,so separating them from each other. Its decorbonizing rate is 86.74% and its output rate is 38.86%.

Description

Technical field: [0001] The invention relates to a method and device for electrostatic decarbonization of fly ash. Background technique: [0002] my country is a large coal-producing and coal-consuming country, and the basic national conditions of using coal as the main fuel for electricity production will not change in a long period of time. Therefore, with the rapid development of the power industry, it has brought about a rapid increase in fly ash emissions. Fly ash emissions from power plants nationwide reached 125 million tons in 1995, 153 million tons in 2000, and 200 million tons in 2010. With the increase of fly ash emissions year by year, the disposal and management of fly ash has brought economic, environmental and social problems. Every 10,000 tons of fly ash stored covers an area of ​​1334m 2 The above has caused a waste of funds and land resources, and more importantly, caused serious air pollution, soil pollution and water pollution, endangering human health, and de...

AI Technical Summary

Problems solved by technology

[0005] The discharge of fly ash in power plants in my country currently adopts two processes of wet ash discharge and dry ash discharge. Since the wet discharge process transports or discharges 1 ton of fly ash, it requires about 20 tons of water, and consumes more than 1.1 billion tons of ash discharge water per year. Waste a lot of water and cause serious water pollution

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