CN108744853A - A kind of NO_x Reduction by Effective desulfurizing agent and preparation method thereof - Google Patents
A kind of NO_x Reduction by Effective desulfurizing agent and preparation method thereof Download PDFInfo
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- CN108744853A CN108744853A CN201810668695.9A CN201810668695A CN108744853A CN 108744853 A CN108744853 A CN 108744853A CN 201810668695 A CN201810668695 A CN 201810668695A CN 108744853 A CN108744853 A CN 108744853A
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- mass parts
- reduction
- desulfurizing agent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
- B01D2257/302—Sulfur oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
Abstract
The invention discloses a kind of NO_x Reduction by Effective desulfurizing agents and preparation method thereof, which is characterized in that it is that high speed agitator is added in carboxymethyl chitosan and water that it, which is by it, stir 5~30min, then urea, ammonium carbonate and dicyanodiamine is added, stirs 10~60min, NO_x Reduction by Effective desulfurizing agent is made.Denitration desulfurizing agent prepared by the present invention, can denitration and desulfurization simultaneously, denitration and desulfuration efficiency height (being more than 92%)；Preparation method is simple and easy to do, and raw material is easy to get, and production equipment requires relatively low, it is easy to accomplish industrialized production.
Description
Technical field
The present invention relates to environmentally friendly auxiliary agent technical field, it is specifically related to a kind of denitration desulfurizing agent and preparation method thereof.
Background technology
The burning of the fossil fuels such as coal, oil and natural gas generates a large amount of nitrogen oxides (NOx) and sulfur dioxide (SO2)
Gas causes serious pollution to air, it has also become an important factor for restricting the sustainable development of socio-economy, it is therefore necessary to stringent
Control NOxAnd SO2Pollution.Currently, there are mainly three types of method of denitration：Selective catalytic reduction, selective non-catalytic reduction and red-hot
Carbon restores.Wherein, the use of first two method is most wide, and common reducing agent is ammonium hydroxide and urea.The advantages of ammonium hydroxide is denitration effect
Good, but its corrosivity is strong, dosage is difficult to control to easily cause secondary pollution, and the smell of ammonium hydroxide is big, transport and storage etc. have peace
Full hidden danger.Urea is easy to maintain, easy to use, safety and environmental protection, but denitration effect is general, solution concentration Gao Shiyi crystallizations, concentration
Energy consumption is higher when low.Wet process of FGD hair method is the major technique of current flue gas desulfurization.Wherein, lime stone (lime)-gypsum
Method is to use most wide sulfur method.This method advantage is that desulfurization effect is preferable, but there are process systems to take up a large area, investment
Greatly, the shortcomings of operating cost is high.With the development of gas denitrifying technology and flue gas desulfurization technique, it is de- to there are some denitrations simultaneously
The report of sulphur, but these denitration desulfurizing agents is less efficient.
Invention content
The purpose of the present invention is exactly to solve the deficiency of the prior art and a kind of denitration and desulfuration efficiency that provide are high, steady
Qualitative good NO_x Reduction by Effective desulfurizing agent.
It is a further object of the present invention to provide a kind of simple and easy to do, raw material is easy to get, and production equipment requires relatively low, it is easy to accomplish
The preparation method of the NO_x Reduction by Effective desulfurizing agent of industrialized production.
The present invention is to realize above-mentioned purpose using following technical solution：A kind of NO_x Reduction by Effective desulfurizing agent, feature
It is, its raw material includes by mass fraction：
The relative molecular mass of the carboxymethyl chitosan is 1000~50000.
Further, its raw material includes by mass fraction：5 mass parts urea, 8 mass parts ammonium carbonates, 0.5 mass parts two
Cyanogen diamines, 3 mass parts carboxymethyl chitosans and 93.5 mass parts water.
Further, its raw material includes by mass fraction：By 8 mass parts carboxymethyl chitosans, 60 mass parts water, 10 matter
Measure part urea, 20 mass parts ammonium carbonates and 2 mass parts dicyanodiamines.
Further, its raw material includes by mass fraction：4 mass parts carboxymethyl chitosans, 80 mass parts water, 7 mass
Part urea, 14 mass parts ammonium carbonates and 1 mass parts dicyanodiamine.
Further, its raw material includes by mass fraction：6 mass parts carboxymethyl chitosans, 75 mass parts water, 8 mass
Part urea, 16 mass parts ammonium carbonates and 1 mass parts dicyanodiamine.
Further, its raw material includes by mass fraction：7 mass parts carboxymethyl chitosans, 70 mass parts water, 9 mass
Part urea, 18 mass parts ammonium carbonates and 2 mass parts dicyanodiamines.
A kind of preparation method of NO_x Reduction by Effective desulfurizing agent, which is characterized in that it is that height is added in carboxymethyl chitosan and water
Fast blender stirs 5~30min, and urea, ammonium carbonate and dicyanodiamine is then added, and stirs 10~60min, is made efficiently de-
Nitre desulfurizing agent.
The present invention is using the attainable advantageous effect of above-mentioned technical solution institute：
1, the present invention using specially designed composition of raw materials prepare denitration desulfurizing agent, can simultaneously denitration and desulfurization, take off
Nitre and desulfuration efficiency are high；Stability is good, due to containing urea crystals when carboxymethyl chitosan saccharic composition can prevent concentration high.
2, preparation method of the invention is simple and easy to do, and raw material is easy to get, and production equipment requires relatively low, it is easy to accomplish industrial metaplasia
Production.
Specific implementation mode
The technical program is explained in detail below in conjunction with specific embodiment.
Embodiment 1
High-speed stirred is added in 3 mass parts carboxymethyl chitosans (relative molecular mass 1000) and 93.5 mass parts water
Device stirs 5min, and 5 mass parts urea, 8 mass parts ammonium carbonates and 0.5 mass parts dicyanodiamine is then added, and stirs 10min, system
Obtain NO_x Reduction by Effective desulfurizing agent 1.At 900~1000 DEG C, denitration efficiency 92.5%, desulfuration efficiency 92.3%.
Embodiment 2
High speed agitator is added in 8 mass parts carboxymethyl chitosans (relative molecular mass 50000) and 60 mass parts water,
30min is stirred, 10 mass parts urea, 20 mass parts ammonium carbonates and 2 mass parts dicyanodiamines are then added, stirs 60min, is made
NO_x Reduction by Effective desulfurizing agent 2.At 900~1000 DEG C, denitration efficiency 99.7%, desulfuration efficiency 99.4%.
Embodiment 3
High speed agitator is added in 4 mass parts carboxymethyl chitosans (relative molecular mass 4000) and 80 mass parts water,
10min is stirred, 7 mass parts urea, 14 mass parts ammonium carbonates and 1 mass parts dicyanodiamine is then added, stirs 20min, is made
NO_x Reduction by Effective desulfurizing agent 3.At 900~1000 DEG C, denitration efficiency 94.9%, desulfuration efficiency 94.6%.
Embodiment 4
High speed agitator is added in 6 mass parts carboxymethyl chitosans (relative molecular mass 10000) and 75 mass parts water,
15min is stirred, 8 mass parts urea, 16 mass parts ammonium carbonates and 1 mass parts dicyanodiamine is then added, stirs 30min, is made
NO_x Reduction by Effective desulfurizing agent 4.At 900~1000 DEG C, denitration efficiency 96.4%, desulfuration efficiency 96%.
Embodiment 5
High speed agitator is added in 7 mass parts carboxymethyl chitosans (relative molecular mass 30000) and 70 mass parts water,
20min is stirred, 9 mass parts urea, 18 mass parts ammonium carbonates and 2 mass parts dicyanodiamines are then added, stirs 40min, is made
NO_x Reduction by Effective desulfurizing agent 5.At 900~1000 DEG C, denitration efficiency 98.4%, desulfuration efficiency 98.1%.
From Examples 1 to 5 as can be seen that the denitration desulfurizing agent can simultaneously denitration desulfurization, it is efficient, be more than 92%.
Compared with prior art, the present invention according to denitration desulfurizing agent made from preparation method of the present invention：It is to urinate
Element, ammonium carbonate, dicyanodiamine and carboxymethyl chitosan are that amine source is prepared, and there is these four materials collaboration denitration desulfurization to make
With more efficient；Carboxymethyl chitosan can also play the role of stabilising system.Therefore, which has extensive
Application prospect.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (7)
1. a kind of NO_x Reduction by Effective desulfurizing agent, which is characterized in that its raw material includes by mass fraction：
The relative molecular mass of the carboxymethyl chitosan is 1000~50000.
2. a kind of NO_x Reduction by Effective desulfurizing agent according to claim 1, which is characterized in that its raw material presses mass fraction packet
It includes：5 mass parts urea, 8 mass parts ammonium carbonates, 0.5 mass parts dicyanodiamine, 3 mass parts carboxymethyl chitosans and 93.5 mass
Part water.
3. a kind of NO_x Reduction by Effective desulfurizing agent according to claim 1, which is characterized in that its raw material presses mass fraction packet
It includes：By 8 mass parts carboxymethyl chitosans, 60 mass parts water, 10 mass parts urea, 20 mass parts ammonium carbonates and 2 mass parts dicyan
Diamines.
4. a kind of NO_x Reduction by Effective desulfurizing agent according to claim 1, which is characterized in that its raw material presses mass fraction packet
It includes：4 mass parts carboxymethyl chitosans, 80 mass parts water, 7 mass parts urea, 14 mass parts ammonium carbonates and 1 mass parts dicyan two
Amine.
5. a kind of NO_x Reduction by Effective desulfurizing agent according to claim 1, which is characterized in that its raw material presses mass fraction packet
It includes：6 mass parts carboxymethyl chitosans, 75 mass parts water, 8 mass parts urea, 16 mass parts ammonium carbonates and 1 mass parts dicyan two
Amine.
6. a kind of NO_x Reduction by Effective desulfurizing agent according to claim 1, which is characterized in that its raw material presses mass fraction packet
It includes：7 mass parts carboxymethyl chitosans, 70 mass parts water, 9 mass parts urea, 18 mass parts ammonium carbonates and 2 mass parts dicyan two
Amine.
7. a kind of preparation of NO_x Reduction by Effective desulfurizing agent corresponding with NO_x Reduction by Effective desulfurizing agent described in claim 1-6 any one
Method, which is characterized in that it is that high speed agitator is added in carboxymethyl chitosan and water, stirs 5~30min, and urine is then added
Element, ammonium carbonate and dicyanodiamine stir 10~60min, and NO_x Reduction by Effective desulfurizing agent is made.
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| CN201810668695.9A CN108744853B (en) | 2018-06-26 | 2018-06-26 | Efficient denitration desulfurizer and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701432A (en) * | 2020-05-06 | 2020-09-25 | 佛山市吉力达铝材科技有限公司 | Denitration desulfurizer and preparation method thereof |
| CN112246080A (en) * | 2020-09-14 | 2021-01-22 | 佛山市粤罡环保设备有限公司 | Organic amine denitration agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701432A (en) * | 2020-05-06 | 2020-09-25 | 佛山市吉力达铝材科技有限公司 | Denitration desulfurizer and preparation method thereof |
| CN111701432B (en) * | 2020-05-06 | 2022-12-23 | 佛山市吉力达铝材科技有限公司 | Denitration desulfurizer and preparation method thereof |
| CN112246080A (en) * | 2020-09-14 | 2021-01-22 | 佛山市粤罡环保设备有限公司 | Organic amine denitration agent and preparation method thereof |
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| CN108744853B (en) | 2020-06-23 |
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