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Method for ammonium sulfite or ammonium nitrite oxidation by ozone

A technology for oxidizing ammonium sulfite and ammonium nitrite, applied in the directions of ammonium nitrate, chemical instruments and methods, separation methods, etc., can solve the problems of complex radiation beam source technology, and achieve the effect of high oxidation efficiency and fast oxidation rate

Inactive Publication Date: 2012-02-22
DALIAN UNIV OF TECH
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Problems solved by technology

The core method is to use the radiation beam source to realize the oxidation of ammonium sulfite, and there is a problem that the radiation beam source generation technology is complicated.

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  • Method for ammonium sulfite or ammonium nitrite oxidation by ozone
  • Method for ammonium sulfite or ammonium nitrite oxidation by ozone
  • Method for ammonium sulfite or ammonium nitrite oxidation by ozone

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Embodiment Construction

[0013] A method for ozone oxidation of ammonium sulfite or ammonium nitrite according to the present invention, ozone is injected into the reaction tank of ammonium sulfite or ammonium nitrite solution through the pipeline and the aeration head, and the ozone oxidizes the ammonium sulfite or ammonium nitrite in the solution Ammonium nitrate is oxidized to ammonium sulfate or ammonium nitrate.

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples. The nitrite concentration used is 0.1mol / L-0.5mol / L.

[0015] figure 2 It is the comparison curve between ozone treatment and traditional aeration method for ammonium sulfite treatment. Among them, the concentration of ammonium sulfite solution is 0.25mol / L, the capacity is 400mL, and the concentration of ozone is 1.5g / m 3 , The flow rate is 2000mL / min, and the processing time is 25 minutes. Compared with the traditional aeration method, the con...

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Abstract

The invention provides a method for ammonium sulfite or ammonium nitrite oxidation by ozone. The method is characterized in that during a wet fire coal or fuel oil flue gas desulphurization and denitration process, SO2 or NOx in the flue gas is adsorbed by an alkaline solution so as to generate sulfite or nitrite collected in a reaction tank, and ozone generated by an ozone generator is injected into an ammonium sulfite or ammonium nitrite solution by a pipeline and an aeration head, also ammonium sulfite or ammonium nitrite in the solution is oxidized by ozone into ammonium sulfate or ammonium nitrate that can be used as fertilizer production raw materials. The method provided in the invention has the characteristics of rapid oxidation rate and high oxidation efficiency of sulfite or nitrite, high gas utilization efficiency and energy saving.

Description

technical field [0001] The invention relates to a method for oxidizing ammonium sulfite or ammonium nitrite by ozone, and belongs to the fields of coal-fired flue gas pollutant control and chemical fertilizer and chemical production. Background technique [0002] Sulfur dioxide (SO2) is produced during the combustion of fossil fuels such as coal and oil 2 ) and nitrogen oxides (NOx) and other acidic gaseous pollutants, causing atmospheric environmental pollution. Therefore, the research and development of coal-fired flue gas desulfurization and denitrification technology has attracted widespread attention. At present, the desulfurization and denitrification technology of coal-fired flue gas in industry is mainly wet method, that is, the use of alkaline substances, such as calcium oxide, calcium hydroxide, magnesium oxide, magnesium hydroxide, ammonia (including ammonia water) or sodium hydroxide, etc., to prepare Alkaline absorption liquid, in the absorption tower, the abso...

Claims

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Application Information

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IPC IPC(8): C01C1/18C01C1/24B01D53/60
CPCY02A50/20
Inventor 李杰李悦鲁娜吴彦
Owner DALIAN UNIV OF TECH
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