High-polymer denitration agent and preparation method thereof

A polymer and denitration agent technology, applied in separation methods, chemical instruments and methods, separation of dispersed particles, etc., can solve the problem of high cost

Active Publication Date: 2017-05-10
SHENZHEN HUAMING ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • High-polymer denitration agent and preparation method thereof
  • High-polymer denitration agent and preparation method thereof
  • High-polymer denitration agent and preparation method thereof

Examples

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Embodiment 1

[0029] 1) Preparation of polymer denitration agent:

[0030] Weigh 33.1 parts by mass of sodium hydroxide and 238.1 parts by mass of distilled water into the reaction kettle to form a sodium hydroxide solution; and keep the reaction kettle in an ice bath and stirring state at 0 ° C ~ 4 ° C and slowly dissolve the mass parts of 100.0 Add acrylic acid to the above sodium hydroxide solution, then add 0.043 parts by mass of potassium persulfate and 0.029 parts by mass of N,N'-methylenebisacrylamide, continue stirring for 30 minutes, then heat up to 75 degrees Celsius for 90 minutes until the mixture polymerizes. Then the polymer was dried at 70 degrees Celsius for 5 hours, and pulverized into particles by a pulverizer to obtain synergistic polymer A.

[0031] 44.0 parts by mass of urea, 55.0 parts by mass of benzomelamine and 1.0 parts by mass of the aforementioned synergistic polymer A were compounded, and mixed by a high-speed mixer. The reaction conditions are as follows: the...

Embodiment 2

[0036] 1) Preparation of polymer denitration agent:

[0037] Weigh 42.9 parts by mass of potassium hydroxide and 228.3 parts by mass of distilled water into the reaction kettle to form a potassium hydroxide solution; and keep the reaction kettle at 0 ° C ~ 4 ° C under ice bath and stirring state to slowly dissolve the mass parts of 45.7 Acrylic acid and 54.3% methacrylic acid were added to the above potassium hydroxide solution, and then 0.041 parts by mass of potassium persulfate and 0.027 parts by mass of N,N'-methylenebisacrylamide were added, and after stirring for 30 minutes, the temperature was raised to Heat at 75°C for 90 minutes until the mixture polymerizes. Then the polymer was dried at 70°C for 5 hours, and pulverized into particles by a pulverizer to obtain synergistic polymer B.

[0038]Mix 5.0 parts by mass of ammonium bicarbonate, 5.0 parts by mass of ammonium carbonate, 38.3 parts by mass of urea, 45.0 parts by mass of melamine, and 6.7 parts by mass of the s...

Embodiment 3

[0041] 1) Preparation of polymer denitration agent:

[0042] Weigh 31.6 parts by mass of sodium acrylate, 36.8 parts by mass of potassium acrylate, and 31.6 parts by mass of acrylic acid dissolved in 200.0 parts by mass of distilled water, then add 0.036 parts by mass of potassium persulfate, 0.024 parts by mass of For N,N'-methylenebisacrylamide, continue to stir for 30 minutes, then raise the temperature to 90 degrees Celsius and heat for 30 minutes until the mixture is polymerized. Then the polymer was dried at 70 degrees Celsius for 5 hours, and pulverized into particles by a pulverizer to obtain synergistic polymer C.

[0043] 15.0 parts by mass of ammonium acetate, 5.0 parts by mass of urea, 40.0 parts by mass of melamine and 40.0 parts by mass of the above synergistic polymer C were compounded, and mixed by a high-speed mixer. The reaction conditions are as follows: the linear velocity of the high-speed stirring paddle is 40 m / s-80 m / s, the stirring time is 5-10 minute...

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Abstract

The invention discloses a composite denitration agent. The composite denitration agent is characterized by comprising the following components comprising the three parts all in parts by mass: (1) 30.0-99.0 parts of an ammonium/amine source which takes at least one of urea, ammonium carbonate, ammonium bicarbonate, ammonium acetate, ammonium sulfate, melamine and benzene substituted melamine, (2) 1.0 to 70.0 parts of a synergistic polymer which comprises polyacrylic acid salts and/or polyalkyl acrylates and/or polyacrylamides as well as copolymer polymer carriers and/or polymer fillers, and (3) 0 to 10.0 parts of other components which at least comprise the power comprising one of the following components: ammonium stearate, magnesium stearate, calcium stearate, a mould inhibitor, precipitated calcium carbonate, magnesium oxide and zeolite. The denitrification rate of the denitration agent can reach 82.3% to 99.3% at the temperature of 800 to 1050 DEG C. The composite denitration agent is simple in preparation method and can be widely used in high-temperature gas denitration situations of a thermal power plant, a waste incineration plant and the like.

Description

technical field [0001] The invention relates to a polymer denitration agent used for boiler gas or flue gas denitration. Background technique [0002] At present, denitrification is the key field of my country's atmospheric environmental protection technology. From the perspective of technical reliability, denitrification efficiency, maintenance costs and other factors, the selective catalytic reduction method and the selective non-catalytic reduction method are used in large-scale industries. However, these two methods A large amount of denitrification agent is required. From the perspective of denitrification agents, how to maintain a high denitrification rate while minimizing the environmental burden of waste denitrification agents is a hot spot in the development of high-performance denitrification agents. The typical denitrification agents reported in the literature are: the use of industrial waste carbon can achieve a denitrification rate as high as 95% to 99% (Tian Na...

Claims

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Application Information

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IPC IPC(8): B01D53/81B01D53/56C08F220/06C08F222/38C08F220/56
CPCB01D53/565C08F220/06C08F222/385C08F220/56
Inventor 姚有为杨丽
Owner SHENZHEN HUAMING ENVIRONMENTAL PROTECTION TECH CO LTD
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