Flue gas desulfurization and regeneration integral tower and flue gas desulfurization method

Abstract

The invention discloses a flue gas desulfurization and regeneration integral tower and a flue gas desulfurization method. The flue gas desulfurization and regeneration integral tower comprises a fluegas discharge zone, a demisting zone, a secondary spraying zone, a liquid holding groove zone, a primary spraying zone, a quenching cooling zone and an absorbed liquid regeneration zone, wherein the absorbed liquid regeneration zone is divided into a preheating zone, a steam stripping zone and a liquid collection ozone from left to right in sequence by using a vertical partition plate I, a partition plate II and a partition plate III; the preheating zone communicates with the primary spraying zone; the preheating zone communicates with the steam stripping zone through an opening in the bottomof the partition plate I; the height of the partition plate II is lower than that of the partition plate I; the steam stripping zone communicates with the liquid collection zone through a space at theupper part of the partition plate II; at the tops of the steam stripping zone and the liquid collection zone, the steam stripping zone and the liquid collection zone are completely partitioned from the spraying zone through the partition plate III; a heat exchange tube group is arranged in the preheating zone; a flue gas is fed into a tower through the heat exchange tube pipe; and an outer sleeveis arranged at the top of a chimney arranged in the flue gas discharge zone. The tower is capable of achieving SO2 recycling and deep demisting in the flue gas, is short in process course, simple inequipment and low in operation cost, and has wide application prospects.

Description

technical field

[0001] The invention belongs to the field of industrial waste gas purification, and relates to a flue gas desulfurization regeneration integrated tower and a flue gas desulfurization method. Background technique

[0002] As we all know, sulfur dioxide is one of the main pollutants in the air, and it is the "culprit" that causes acid rain. According to the "2016 Environmental Bulletin" published by the Ministry of Environmental Protection of my country, 747 cities (districts and counties) in China have carried out precipitation monitoring. The proportion of cities with acid rain is 19.8%, the frequency of acid rain is 17.2% on average, and the area of ​​acid rain area is about 690,000 square thousand. meters, accounting for 7.2% of the country’s land grade. The areas of relatively heavy acid rain and heavy acid rain accounted for 1.0% and 0.03% of the country’s land area respectively. The overall type of acid rain is still sulfuric acid, and acid rain pollution...

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