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Absorbent for treating flue gas containing sulfur dioxide

A sulfur dioxide and absorbent technology, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve problems such as large economic costs, and achieve the effect of shortening the process, simplifying the process, and saving energy.

Inactive Publication Date: 2006-02-08
NINGBO TAI CHI ENVIRONMENTAL PROTECTION EQUIPCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Technicians from all over the world have developed many treatment methods and absorbents. These absorbents include lime, limestone, sodium hydroxide, sodium carbonate, basic aluminum sulfate, ammonia and smelting slag and other alkaline substances. These alkaline substances can effectively remove SO2 in flue gas, but the use of these absorbents requires a large economic cost

Method used

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  • Absorbent for treating flue gas containing sulfur dioxide

Examples

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Embodiment 1

[0019] Example 1: Using soil containing CaO4.3%MgO2.4% (total CaO is 7.3%) as absorbent, the sulfur dioxide flue gas with a concentration of 5600mg / m3 is treated, and the soil is prepared into liquid in a slurry tank The slurry with a solid ratio of 12L / Kg is sent to the DS-multiphase reactor with three stages and ten units to react with sulfur dioxide in the flue gas. The spray density is 85m3 / m2.h, and the concentration of sulfur dioxide in the flue gas is reduced to 532mg after absorption. / m3, the sulfur dioxide absorption rate reaches 90%.

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Abstract

The invention refers to a kind of absorbent which can process sulfur dioxide smoke. It is designed specially for the smoke contamination treatment, the other aspiring effect is that it can be used in the improvement of alkali soil. The absorbent is made upo f alkali mud and water, the liquid and soli rate is 5-20 L / kg. It has strong adaptability, and the energy consumption can be saved. It applies to many sulfur dioxide absorption devices, it can changes the alkali soil into useful soil. It is especially applies to place where has sulfur dioxide smoke to be treated and there is the correspondent soil.

Description

Technical field: [0001] The invention relates to an absorbent for treating flue gas containing sulfur dioxide and a preparation method thereof. Background technique: [0002] Sulfur dioxide is the main pollutant of air pollution. Sulfur dioxide comes from flue gas from coal burning, non-ferrous metal smelting, iron ore sintering and chemical production. Sulfur dioxide flue gas treatment is one of the most important environmental protection tasks. There are many treatment methods. The most effective and applicable method is to use absorbents to react with sulfur dioxide to make it harmless or less harmful and separate from the flue gas. come out. Technicians from all over the world have developed many treatment methods and absorbents. These absorbents include lime, limestone, sodium hydroxide, sodium carbonate, basic aluminum sulfate, ammonia and smelting slag and other alkaline substances, which can be effectively removed Sulfur dioxide in flue gas, but the use of these absorbent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/50B01D53/80
Inventor 史汉祥
Owner NINGBO TAI CHI ENVIRONMENTAL PROTECTION EQUIPCO