Water vapor and fine particle pollutant synergistic removal device based on pressure swing condensation

Abstract

The invention discloses a water vapor and fine particle pollutant synergistic removal device based on pressure swing condensation, the water vapor and fine particle pollutant synergistic removal device comprises a separator and a vapor pressure swing condensation part arranged at the front end of the separator, wherein the separator comprises an overflow pipe arranged at the top end and an underflow pipe arranged at the bottom end. The vapor pressure swing condensation part comprises an inlet pipe, a closing pipe, a throat pipe, an expanding pipe and a connecting pipe; saturated vapor sequentially passes through the inlet pipe, the closing pipe, the throat pipe, the expanding pipe and the connecting pipe and is subjected to pressure transformation and condensation into small droplets to enter the separator tangentially; after the small droplets cohere and grow up in the separator and make up for fine particles, the droplets are discharged downward from the underflow pipe, and the gas is discharged upward from the overflow pipe. The water vapor and fine particle pollutant synergistic removal device can realize that cooperative removal of the wat vapor and the fine particles in variable pressure condense wet flue gas.

Description

technical field [0001] The invention relates to the field of white smoke plume elimination in thermal power and non-electric industries, in particular to a device for synergistic removal of water vapor and fine particle pollutants based on variable pressure condensation. Background technique [0002] The desulfurization facilities of more than 90% of coal-fired power plants in my country adopt limestone-gypsum wet desulfurization process. After desulfurization, the saturated wet flue gas that entrains a large amount of sulfur trioxide, gypsum particles, sulfur / nitrate and other pollutants enters the atmosphere through the chimney, and comes into contact with the ambient air with a lower temperature to cool down the flue gas. During this process, the water vapor contained in the flue gas is supersaturated and condensed, and the condensed water droplets refract and scatter the light, so that the smoke plume presents a white or gray "wet plume" (commonly known as "big white smo...

AI Technical Summary

Problems solved by technology

However, the process of realizing the above-mentioned technology to eliminate plume requires a lot of energy consumption, and requires high heat transfer efficiency and anti-blocking technology of heat exchangers, and high operating costs. Before the introduction, the heat exchange and dewhitening technology was rarely used in actual production, and it was necessary to adopt a novel, effective, economical and cooperative removal device for water vapor and fine particle pollutants that is suitable for long-term operation

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