CN102500212A - Method for injecting surface discharge active material to oxidized ammonium sulfite or ammonium nitrite - Google Patents
Method for injecting surface discharge active material to oxidized ammonium sulfite or ammonium nitrite Download PDFInfo
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- CN102500212A CN102500212A CN2011103154915A CN201110315491A CN102500212A CN 102500212 A CN102500212 A CN 102500212A CN 2011103154915 A CN2011103154915 A CN 2011103154915A CN 201110315491 A CN201110315491 A CN 201110315491A CN 102500212 A CN102500212 A CN 102500212A
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- ammonium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention provides a method for injecting a surface discharge active material to oxidized ammonium sulfite or ammonium nitrite. The method for injecting the surface discharge active material to oxidized ammonium sulfite or ammonium nitrite is characterized in that: in a wet desulphurization and denitration process of fire coal or fuel oil, sulfite or nitrite generated by absorbing SO2 or NOx in the gas through aqueous alkali is collected into a reaction tank, a gaseous-phase surface discharge system is placed in the reaction tank of ammonium sulfite or ammonium nitrite, oxygen-contained gas enters one end (called inlet) of the surface discharge system, is changed into active gas containing active materials, such as ozone, atomic oxygen, etc., and then injected to a solution in the reaction tank by a sprayer on the other end (called outlet) of the surface discharge system, the ammonium sulfite or ammonium nitrite in the solution is oxidized to ammonium sulfate or ammonium nitrate by the active materials as raw materials of chemical fertilizers. The method has the characteristics of high oxidation rate and efficiency of the ammonium sulfite or ammonium nitrite, high utilization efficiency of gas and energy saving.
Description
Technical field
The present invention relates to the method that a kind of creeping discharge active material injects oxidation ammonium sulfite or ammonium nilrite, belong to control of coal-fired flue-gas pollutant and chemical industry of chemical fertilizer production field.
Background technology
Produce sulfur dioxide (SO in fossil fuel (like coal and the oil) combustion process
2) and nitrogen oxide acidic gaseous pollutants such as (NOx), cause air environmental pollution, therefore, the coal-fired flue gas desulfurization and denitration technical research receives common concern.At present; The coal-fired flue gas desulfurization and denitration technology mainly is a wet method in the industry; Promptly utilize alkaline matter,, be mixed with the alkali lye absorption liquid like calcium oxide, calcium hydroxide, magnesia, magnesium hydroxide, ammonia (comprising ammoniacal liquor) or NaOH etc.; Absorption liquid fully contacts with flue gas in the absorption tower, alkaline matter in the absorption liquid and SO
2With the NOx reaction, generate sulphite and nitrite and be dissolved in the absorption liquid, through the aeration oxygenation, change sulphite and nitrite into sulfate and nitrate again, reach the purpose of flue gas desulfurization and denitrification.
In addition, in the chemical fertilizer raw material production technology, it is important chemical material production process very that sulfurous acid (or sulphite) and nitrous acid (or nitrite) oxidation are prepared sulfuric acid (or sulfate) and nitric acid (or nitrate).
Yet; In existing wet desulphurization denitration and the chemical industry of chemical fertilizer production technology; Basically be to utilize oxygen and sulfurous acid (or sulphite) and nitrous acid (or nitrite) reaction to generate sulfuric acid (or sulfate) and nitric acid (or nitrate); Technological means is to adopt blower fan that oxygen-containing gas (like air) is blasted the oxidation pond of sulfurous acid (or sulphite) and nitrous acid (or nitrite), has the low and bigger problem of blower fan power consumption of oxygen utilization efficient, and then causes operating cost higher.For this reason, carry out correlation technique research, improved the research work of the oxidation efficiency of sulfurous acid (or sulphite) and nitrous acid (or nitrite).
Documents 1 [Xu Guang etc.; CN1182035C] equipment that utilizes ionizing radiation oxidation ammonium sulfite and documents 2 [Xu Guang etc.; CN1199860C] the method for utilizing ionizing radiation oxidation ammonium sulfite; Be that the droplet that forms the ammonium sulfite salting liquid after gas and the liquid mixing gets into radiation chamber, the oxidized ammonium sulfate that is transformed into of the ammonium sulfite in the solution.Wherein, the ionizing radiation generating means is accelerator or radioactive source, can also be the X-ray generating means, or ultraviolet ray generating apparatus, and the ammonium sulfite solution that is used for the oxidation high concentration obtains the chemical technology field of ammonium sulfate.Its core methed is to utilize the irradiation electron gun to realize the oxidation of ammonium sulfite, has radiation generation technique complicated problems.
Summary of the invention
To the deficiency of prior art, the invention provides the method that a kind of creeping discharge active material injects oxidation ammonium sulfite or ammonium nilrite.
Technical scheme of the present invention is following:
In fire coal or gas from oil burning wet desulphurization denitrating technique, SO in the flue gas
2Or the sulphite that absorb to generate through aqueous slkali of NOx or nitrite be by reaction tank, and gas phase creeping discharge system directly is positioned in the reaction tank of ammonium sulfite or ammonium nilrite; And oxygen-containing gas gets into the creeping discharge system entry; Under the effect of surface discharge plasma, be transformed into the active gases that contains ozone and elemental oxygen isoreactivity material; Shower nozzle through the creeping discharge system outlet is injected in the solution of reaction tank; Active material generates ammonium sulfate or ammonium nitrate with ammonium sulfite in the solution or ammonium nilrite oxidation, is used for the production of chemical fertilizer raw material.
Compare with traditional aeration method, the invention has the beneficial effects as follows sulphite or nitrite-oxidizing speed is fast, oxidation efficiency is high, the gas utilization ratio is high and save energy.
Description of drawings
Fig. 1 is the sketch map that gas phase creeping discharge active material injects oxidation ammonium sulfite or ammonium nilrite method.
Fig. 2 is that 0.2mol/L ammonium sulfite autoxidation is handled and the discharge process effect contrast figure.
Among the figure: 1 reaction tank; 2 creeping discharge systems; 3 oxygen-containing gas; 4 air pumps; 5 inlets; 6 shower nozzles; 7 give the ac high voltage source of creeping discharge system power supply; 8 leads; 9 gas path pipes.
The specific embodiment
A kind of creeping discharge active material of the present invention injects the method for oxidation ammonium sulfite or ammonium nilrite; Be that the creeping discharge system is positioned in the reaction tank of ammonium sulfite or ammonium nilrite; Oxygen-containing gas gets into the inlet of creeping discharge system; Under the surface discharge plasma effect, oxygen-containing gas changes the active gases that contains ozone and elemental oxygen into, gets into the solution of reaction tank from the shower nozzle of creeping discharge system outlet; Ammonium sulfite in reaction tank in active material and the solution or ammonium nilrite reaction transform and generate ammonium sulfate or ammonium nitrate.
Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail, the inferior salinity of employing is 0.1mol/L-0.3mol/L.
The creeping discharge system that adopts in the experiment is that internal diameter is 13mm, and external diameter is the quartz glass tube of 16mm; Shower nozzle is the quartz sand head; Air is as oxygen-containing gas, and throughput is 2000mL/min; Reaction tank is high 44mm, and internal diameter is 50mm, the lucite tube of wall thickness 2.9mm.
Fig. 2 is that discharge tube is handled the correlation curve of handling ammonium sulfite with traditional aeration.Wherein, ammonium sulfite solution concentration is that 0.2mol/L, volume are that 400mL, processing time are 25 minutes.Compare with traditional aeration, creeping discharge makes sulfite oxidation generate 1.74 times of ammonium sulfate speed raisings.
In addition, when least concentration 0.1mol/L and upper limit concentration 0.3mol/L, the conversion ratio of discharge process ammonium sulfite all can improve 1.3 times on the basis of traditional aeration.
Claims (2)
1. a creeping discharge active material injects the method for oxidation ammonium sulfite or ammonium nilrite, it is characterized in that, and in fire coal or gas from oil burning wet desulphurization denitrating technique, SO in the flue gas
2Or NOx is collected in reaction tank through sulphite or the nitrite that aqueous slkali absorb to generate, and gas phase creeping discharge system directly is positioned in the reaction tank of ammonium sulfite or ammonium nilrite.
2. a creeping discharge active material injects the method for oxidation ammonium sulfite or ammonium nilrite; Oxygen-containing gas gets into the creeping discharge system; Under the effect of surface discharge plasma; Be transformed into the active gases that contains ozone and elemental oxygen isoreactivity material, be injected in the solution of reaction tank through the shower nozzle of creeping discharge system outlet, active material generates ammonium sulfate or ammonium nitrate with ammonium sulfite in the solution or ammonium nilrite oxidation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103154915A CN102500212A (en) | 2011-10-17 | 2011-10-17 | Method for injecting surface discharge active material to oxidized ammonium sulfite or ammonium nitrite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011103154915A CN102500212A (en) | 2011-10-17 | 2011-10-17 | Method for injecting surface discharge active material to oxidized ammonium sulfite or ammonium nitrite |
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| CN102500212A true CN102500212A (en) | 2012-06-20 |
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| CN2011103154915A Pending CN102500212A (en) | 2011-10-17 | 2011-10-17 | Method for injecting surface discharge active material to oxidized ammonium sulfite or ammonium nitrite |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768902A (en) * | 2014-01-27 | 2014-05-07 | 武汉凯迪电力环保有限公司 | Method and device for oxidizing sulphite grout in wet flue gas desulfurization process |
| CN115536124A (en) * | 2022-08-16 | 2022-12-30 | 昆明理工大学 | Method for improving quality and efficiency of ammonium sulfate product produced by ammonia-acid flue gas desulfurization wastewater |
Citations (3)
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|---|---|---|---|---|
| CN1233195A (en) * | 1996-10-09 | 1999-10-27 | 零排放技术公司 | Barrier discharge conversion of SO2 and NOx to acids |
| CN101434428A (en) * | 2008-12-03 | 2009-05-20 | 大连理工大学 | Liquid electrode surface discharge plasma reactor for water treatment |
| CN102188883A (en) * | 2011-04-12 | 2011-09-21 | 王晓晔 | Novel smoke purification process and device capable of integrally desulphurizing, denitrifying and removing heavy metals |
-
2011
- 2011-10-17 CN CN2011103154915A patent/CN102500212A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1233195A (en) * | 1996-10-09 | 1999-10-27 | 零排放技术公司 | Barrier discharge conversion of SO2 and NOx to acids |
| CN101434428A (en) * | 2008-12-03 | 2009-05-20 | 大连理工大学 | Liquid electrode surface discharge plasma reactor for water treatment |
| CN102188883A (en) * | 2011-04-12 | 2011-09-21 | 王晓晔 | Novel smoke purification process and device capable of integrally desulphurizing, denitrifying and removing heavy metals |
Non-Patent Citations (2)
| Title |
|---|
| 危海涛等: "臭氧对亚硫酸铵的氧化效果研究", 《安徽农业科学》 * |
| 岳朝松等: "沿面放电臭氧发生器电极的研究", 《安全与环境工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103768902A (en) * | 2014-01-27 | 2014-05-07 | 武汉凯迪电力环保有限公司 | Method and device for oxidizing sulphite grout in wet flue gas desulfurization process |
| CN103768902B (en) * | 2014-01-27 | 2016-03-30 | 武汉凯迪电力环保有限公司 | Wet fuel gas desulfurizing technology sulfite salt slurries method for oxidation and equipment thereof |
| CN115536124A (en) * | 2022-08-16 | 2022-12-30 | 昆明理工大学 | Method for improving quality and efficiency of ammonium sulfate product produced by ammonia-acid flue gas desulfurization wastewater |
| CN115536124B (en) * | 2022-08-16 | 2024-01-09 | 昆明理工大学 | Quality and efficiency improving method for ammonium sulfate product produced by using flue gas desulfurization wastewater by adopting ammonia-acid method |
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Application publication date: 20120620 |