CN103816766A - Composite desulfurization and denitration agent - Google Patents
Composite desulfurization and denitration agent Download PDFInfo
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- CN103816766A CN103816766A CN201410050710.5A CN201410050710A CN103816766A CN 103816766 A CN103816766 A CN 103816766A CN 201410050710 A CN201410050710 A CN 201410050710A CN 103816766 A CN103816766 A CN 103816766A
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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 composite desulfurization and denitration agent, and belongs to the technical field of industrial gas purification. The composite desulfurization and denitration agent is characterized by being prepared through the following steps: mixing the following raw materials in parts by weight: 40 to 50 parts of urea, 60 to 80 parts of sodium carbonate, 0.2 to 0.8 part of EDTA-Fe, 0.2 to 0.8 part of absorption enhancer, and 0.5 to 0.8 part of distearoyl diethylenetriamine, wherein the total parts by weight of the EDTA-Fe, absorption enhancer, and surfactant are more than 1.2 parts by weight; adding 700 to 900 parts by weight of water into the mixture, evenly mixing, and adding a proper amount of sodium hydroxide to adjust the pH value to a range of 10 to 12. The composite desulfurization and denitration agent is used to remove high-valence oxynitride and sulfur dioxide at a normal temperature and under a normal pressure; the nitrogen dioxide absorption rate of the agent is 95% or more, the sulfur dioxide absorption rate of the agent is 90% or more, and the agent has the advantages of rapid absorption speed and high efficiency.
Description
Technical field
The present invention relates to a kind of compound desulfurization denitrification agent, belong to industrial gas purifying technical field.
Background technology
At present main denitrating technique is SNCR(SNCR method), SCR(selective catalytic reduction) technology.By add ammonia or ammoniacal liquor in flue gas, control its reaction condition, make nitrogen oxide and ammonia generation redox reaction generate nitrogen, reach the object of denitration.
The weak point that above-mentioned denitrating technique exists is: SNCR method: in stove, spray ammonia is removed nitrogen oxide treatment effeciency low (30%-50%), and the escaping of ammonia is serious, is difficult to mark discharge; Selective catalytic reduction uses catalyst, and efficiency relatively high energy reaches 80% efficiency, but invests highly, and catalyst layer needs 2-3 to change once, and operating cost is high.Simultaneity factor participates in the ammonia of reaction, need to evaporate by liquefied ammonia, the method such as ammoniacal liquor evaporation, urea pyrolysis obtains, and has very large potential safety hazard.
Applicant retrieves the desulfurization denitrification agent of prior art, and wherein application number is the composition that 200320203954.7,200720036607.0,201110180187.4 Chinese patent has related to desulfurization denitrification agent.
" several modifications are the comparative studies of desulphurization denitration absorbent simultaneously " (Han Yinghui etc. " North China Electric Power University's journal " the 37th the 6th phase of volume of November in 2010) discloses a kind of desulphurization denitration absorbent, and it consists of: EDTA closes iron, H
2o
2, urea, half amide acid closes iron, manganese is thing M and complexing agent F.
Summary of the invention
The invention provides a kind of compound desulfurization denitrification agent, for removing of higher nitrogen oxides under normal temperature and pressure and sulfur dioxide, to the absorptivity of nitrogen dioxide more than 95%, to the absorptivity of sulfur dioxide more than 90%, its infiltration rate is fast, efficiency is high, is suitable for the process tail gas processing that nitric plant, oxalic acid factory, nitramine factory, explosive factory etc. are produced and the enterprise of application nitric acid discharges.
The concrete technical scheme adopting of the present invention is:
A kind of compound desulfurization denitrification agent; it is characterized in that; described compound desulfurization denitrification agent is made in accordance with the following steps: urea 40-50 weight portion, sodium carbonate 60-80 weight portion, EDTA are closed to iron 0.2-0.8 weight portion, absorbefacient 0.2-0.8 part, the mixing of stearic bicine diester base diethylenetriamine 0.5-0.8 weight portion; wherein; EDTA closes iron, absorbefacient, surfactant weight sum and is greater than 1.2 weight portions; add deionized water 700-900 weight portion; stir; add appropriate NaOH, adjusting pH is 10-12.
Wherein, the compound that described absorbefacient is following chemical formula is according to the mixture of mol ratio 1:1:
with
The effect of adding stearic bicine diester base diethylenetriamine in compound desulfurization denitrification agent of the present invention is to promote absorbefacient to dissolve; through applicant's verification experimental verification; nitrogen oxide and the sulfur dioxide of absorbefacient of the present invention to gaseous state has strong suction-operated; add the dissolving that absorbefacient can promote nitrogen oxide and sulfur dioxide; thereby accelerate the absorption of nitrogen oxide and sulfur dioxide; improve absorption efficiency, and realize Wind Volume absorption.
Compared with prior art, advantage of the present invention is:
1) the present invention can realize Wind Volume processing, can process air quantity more than 100,000 grades, can apply and the processing that contains higher nitrogen oxides and industrial SO 2 gas;
2) denitrification efficiency is high, to the absorptivity of nitrogen dioxide more than 95%, to the absorptivity of sulfur dioxide more than 90%.
The specific embodiment
Embodiment: unit: g
In the formula of embodiment 1-3, add appropriate NaOH, adjusting pH is 10-12, obtains alkaline denitration absorbent of the present invention.
Described absorbefacient be the compound of following chemical formula according to the mixture of mol ratio 1:1:
Claims (2)
1. a compound desulfurization denitrification agent; it is characterized in that; described compound desulfurization denitrification agent is made in accordance with the following steps: urea 40-50 weight portion, sodium carbonate 60-80 weight portion, EDTA are closed to iron 0.2-0.8 weight portion, absorbefacient 0.2-0.8 part, the mixing of stearic bicine diester base diethylenetriamine 0.5-0.8 weight portion; wherein; EDTA closes iron, absorbefacient, surfactant weight sum and is greater than 1.2 weight portions; add deionized water 700-900 weight portion; stir; add appropriate NaOH, adjusting pH is 10-12.
2. compound desulfurization denitrification agent according to claim 1, is characterized in that, the compound that described absorbefacient is following chemical formula is according to the mixture of mol ratio 1:1:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050710.5A CN103816766A (en) | 2014-02-14 | 2014-02-14 | Composite desulfurization and denitration agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410050710.5A CN103816766A (en) | 2014-02-14 | 2014-02-14 | Composite desulfurization and denitration agent |
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| Publication Number | Publication Date |
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| CN103816766A true CN103816766A (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410050710.5A Pending CN103816766A (en) | 2014-02-14 | 2014-02-14 | Composite desulfurization and denitration agent |
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| CN (1) | CN103816766A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190210A (en) * | 2014-08-26 | 2014-12-10 | 中国船舶重工集团公司第七一八研究所 | Composite organic alcohol amine absorbing agent for carbon dioxide |
| CN105396450A (en) * | 2015-11-18 | 2016-03-16 | 山东苏势环保能源科技发展有限公司 | Chemical desulfurization and denitrification agent for boiler flue gas and preparation method of agent |
| CN107308783A (en) * | 2017-08-31 | 2017-11-03 | 山东瑞嘉通风环保科技有限公司 | A kind of simultaneous desulfuration and denitration technique by wet flue gas method |
| CN108236810A (en) * | 2018-01-23 | 2018-07-03 | 庞志兰 | A kind of filtering material and its preparation process for Industrial Wastewater Treatment |
| CN115155192A (en) * | 2022-07-08 | 2022-10-11 | 宁夏上峰萌生建材有限公司 | A purify discharging equipment for flue gas desulfurization denitration |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711943A (en) * | 2009-09-15 | 2010-05-26 | 华东理工大学 | Method for controlling pollutant waste gas containing NO through low-temperature liquid phase catalytic reduction |
-
2014
- 2014-02-14 CN CN201410050710.5A patent/CN103816766A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711943A (en) * | 2009-09-15 | 2010-05-26 | 华东理工大学 | Method for controlling pollutant waste gas containing NO through low-temperature liquid phase catalytic reduction |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190210A (en) * | 2014-08-26 | 2014-12-10 | 中国船舶重工集团公司第七一八研究所 | Composite organic alcohol amine absorbing agent for carbon dioxide |
| CN105396450A (en) * | 2015-11-18 | 2016-03-16 | 山东苏势环保能源科技发展有限公司 | Chemical desulfurization and denitrification agent for boiler flue gas and preparation method of agent |
| CN107308783A (en) * | 2017-08-31 | 2017-11-03 | 山东瑞嘉通风环保科技有限公司 | A kind of simultaneous desulfuration and denitration technique by wet flue gas method |
| CN108236810A (en) * | 2018-01-23 | 2018-07-03 | 庞志兰 | A kind of filtering material and its preparation process for Industrial Wastewater Treatment |
| CN115155192A (en) * | 2022-07-08 | 2022-10-11 | 宁夏上峰萌生建材有限公司 | A purify discharging equipment for flue gas desulfurization denitration |
| CN115155192B (en) * | 2022-07-08 | 2023-11-07 | 宁夏上峰萌生建材有限公司 | Purifying and discharging device for flue gas desulfurization and denitrification |
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| CB02 | Change of applicant information |
Address after: 255086, north of Xin Gao Road, Zibo high tech Zone, Shandong Province, east of North Zone of Development Zone (Zibo Sanlin New Material Co., Ltd.) Applicant after: SHANDONG AMETHYST PHOTOELECTRIC NEW MATERIAL CO.,LTD. Address before: 255086, north of Xin Gao Road, Zibo high tech Zone, Shandong Province, east of North Zone of Development Zone (Zibo Sanlin New Material Co., Ltd.) Applicant before: Shandong Amethyst Photoelectric New Material Co.,Ltd. |
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Application publication date: 20140528 |
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| WD01 | Invention patent application deemed withdrawn after publication |