Equipment of desulfurizing fume by method dissolved in cold water

Abstract

A cold water dissolution flue gas desulfurization device, the principle of which is: cold water has a strong dissolving ability for sulfur dioxide gas, and the water with sulfur dioxide gas dissolved in it is heated, and the sulfur dioxide gas is released from the water; the device includes: a flue gas system, a process water system , sulfur dioxide gas collection system, flue gas cooling heat recovery water treatment desalination system, flue gas washing and dust removal system, wet ash discharge system; flue gas heat exchanger, heat pipe evaporator, flue gas heating evaporator equipped with ash removal device; expansion vessel The bottom of the cavity is provided with a dust cleaning and flushing water distribution pipe device and a smoke washing water storage tank, which is connected to the smoke washing water sedimentation filter; The water vapor in the flue gas is condensed and removed, and the flue gas is dedusted by expanding the container and spraying the flue gas dust collector. The water-cooled flue gas device reduces the flue temperature, and sprays with cold water to dissolve the sulfur dioxide gas in the flue gas. The cold water heating of the sulfur dioxide gas releases the sulfur dioxide gas from the water.

Description

technical field [0001] The invention relates to the separation and extraction of sulfur dioxide (SO 2 ) and other gases, the method and device for producing distilled water by using the heat of flue gas to heat water. It belongs to the field of environmental protection. Background technique [0002] Currently, the power industry is responsible for SO 2 Major Sectors of Pollution and Acid Rain, SO 2 A large amount of emissions have caused serious air pollution in Chinese cities. SO 2 The discharge has caused serious acid rain pollution and ecological damage, so its environmental impact has received great attention. A report by the World Bank, "Clear Water and Blue Sky——Prospecting China's Environment in the 21st Century" estimated the impact of China's air pollution and water pollution on the environment. According to the value of willingness to pay method, China's current (1995) loss of air and water pollution accounts for about 8% of GDP; if the human capital valuatio...

AI Technical Summary

Problems solved by technology

Therefore, the currently known flue gas desulfurization technologies are all chemical methods, the cost is high, and the treatment is difficult. It is difficult to recycle flue gas and reduce secondary pollution.

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