CN109894003A - Urea for vehicle formula - Google Patents
Urea for vehicle formula Download PDFInfo
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- CN109894003A CN109894003A CN201711297267.1A CN201711297267A CN109894003A CN 109894003 A CN109894003 A CN 109894003A CN 201711297267 A CN201711297267 A CN 201711297267A CN 109894003 A CN109894003 A CN 109894003A
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- urea
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- vehicle formula
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- preservative
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Abstract
The invention discloses urea for vehicle formula, including high-purity urea, deionized water and additive, the additive includes activating agent, preservative and catalyst, high-purity urea entirety accounting 32%, the deionized water accounting 67%, the additive accounting 1%；The activating agent and soft dose of the profit and the proportion of the preservative press 0.4:0.35:0.25.Formula provided by the invention can not only improve the reaction efficiency of entire urea for vehicle, while extending the shelf-life of solvent, while formula of the invention is applicable in and produces in enormous quantities, cost of material is low, and process is simple by being added to activating agent, preservative and catalyst.
Description
Technical field
The present invention relates to chemical products formula technique fields, especially urea for vehicle formula.
Background technique
Currently, with the development of science and technology, the dosage of automobile is more more and more universal, urea for vehicle is that heavy-duty diesel vehicle reaches
The essential product of four discharge standard of state.Urea for vehicle refers to that urea concentration is 32.5% and solvent is the aqueous solution of urea of ultrapure water,
Raw material is urea crystal and ultrapure water.The diesel vehicles such as heavy truck, car will reach four discharge standard of state, in vent gas treatment just
Suitable SCR system is selected, and this system must be handled the nitrogen oxides in tail gas using urea liquid.Cause
This, urea for vehicle solution reaches the essential product of four discharge standard of state at heavy truck and car, automobile urea liquid be by
It is divided into the high-purity transparency liquid of 32.5% high-purity urea and 67.5% deionized water composition, there is light ammonium hydroxide smell.Such as
Fruit splashes out, and moisture evaporates and forms crystallization.Automobile urea liquid is used for car, truck, car and heavy non-road equipped with SCR system
Road uses diesel-engine vehicles, is the consumables for having to use in SCR technology, by diesel engine together with SCR catalyst
Harmful nitrogen oxides of machine discharge is converted into harmless vapor and nitrogen.
Traditional urea for vehicle formula, process that product purity is often not high enough, while conventional formulation is made
Urea for vehicle often occur reflecting slowly, and be easy to appear purification in use, since catalyst is not added in solution
React it is not thorough enough, cause a large amount of tail gas of motor vehicle emission not to be purified, problems above just need to traditional formula into
Row improves, thus it is proposed that urea for vehicle formula.
Summary of the invention
The present invention is to solve above-mentioned phenomenon, using the technical solution of following modification, urea for vehicle formula, including high-purity urine
Element, deionized water and additive, the additive include activating agent, preservative and catalyst, high-purity urea entirety accounting
32%, the deionized water accounting 67%, the additive accounting 1%；The activating agent and soft dose of the profit and the preservative
Proportion presses 0.4:0.35:0.25.
As present invention further optimization mode, molecule accounting C:O:N:H=12:16:28:4 of high-purity urea,
The wherein percentage composition 46.67% of nitrogen, the degree 20% of carbon, the percentage composition 26.67% of oxygen, the percentage composition of hydrogen
6.66%。
As present invention further optimization mode, high-purity Urea Process one, with carbon dioxide and ammonia in high temperature, height
Synthesizing amino ammonium formate is depressed, is decomposed, after sorption enhanced, crystallization, separation, drying form.
As present invention further optimization mode, high-purity Urea Process two, by the ammonia and titanium dioxide by purification
Carbon 2.8~4.5 is mixed into synthetic tower in molar ratio, and tower pressure interior force is 13.8~24.6 MPa, and temperature is 180~200 DEG C, instead
Answering residence time of material is 25~40min, obtains the urea liquid containing superfluous ammonia and aminoquinoxaline, is cooled down through decompression, will be divided
Urea liquid after separating out ammonia and aminoquinoxaline is evaporated to 99.5% or more, is then granulated to obtain urea product in granulation tower.
As present invention further optimization mode, raw water is carried out mechanical filter, gone by the deionized water processing method
It is filtered after mechanical admixture using active carbon in water removal, 95% or more electrolyte and macromolecular compound is filtered out using reverse osmosis membrane,
The small organic compound for being not easy to be tightly held by activated carbon decomposed in water is irradiated by ultraviolet light, then passes through membrane filtration.
As present invention further optimization mode, the activating agent be charcoal 10-30 parts, 2-10 parts of sulphur, double cyanogen
2-3 parts of amine, 2-3 parts of bentonite, 3-5 parts of cornstarch.
As present invention further optimization mode, the preservative is sodium sorbate 10-20 parts by weight, para hydroxybenzene first
The mixture that acid butyl ester 30-45 parts by weight, nitrofurazone derivative 20-35 parts by weight are constituted.
As present invention further optimization mode, the catalyst is diethanolamine 15-35 parts by weight, hexyl acrylate
The mixture that 20-40 parts by weight, sodium metavanadate 10-25 parts by weight are constituted.
Formula provided by the invention can not only improve entire automobile-used urine by being added to activating agent, preservative and catalyst
The reaction efficiency of element, while the shelf-life of solvent is extended, while formula of the invention is applicable in and produces in enormous quantities, cost of material
Low, process is simple.
Specific embodiment
Below in conjunction in the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Urea for vehicle formula, including high-purity urea, deionized water and additive, the additive include activating agent, anti-corrosion
Agent and catalyst, high-purity urea entirety accounting 32%, the deionized water accounting 67%, the additive accounting 1%；It is described
Activating agent and soft dose of the profit and the proportion of the preservative press 0.4:0.35:0.25.
Molecule accounting C:O:N:H=12:16:28:4 of high-purity urea, the wherein percentage composition 46.67% of nitrogen, carbon
Degree 20%, the percentage composition 26.67% of oxygen, the percentage composition 6.66% of hydrogen.
High-purity Urea Process one, with carbon dioxide and ammonia synthesizing amino ammonium formate under high temperature and pressure, decomposed,
After sorption enhanced, crystallization, separation, drying are formed.
Ammonia by purification 2.8~4.5 is mixed into conjunction in molar ratio with carbon dioxide by high-purity Urea Process two
At tower, tower pressure interior force is 13.8~24.6 MPa, and temperature is 180~200 DEG C, and the reaction mass residence time is 25~40min, is obtained
To the urea liquid containing superfluous ammonia and aminoquinoxaline, cool down through decompression, the urea liquid after ammonia and aminoquinoxaline will be isolated and steamed
It is dealt into 99.5% or more, is then granulated to obtain urea product in granulation tower.
Raw water is carried out mechanical filter by the deionized water processing method, goes to use active carbon in water removal after mechanical admixture
Filtering, 95% or more electrolyte and macromolecular compound are filtered out using reverse osmosis membrane, are irradiated and are decomposed in water not by ultraviolet light
The small organic compound being easily tightly held by activated carbon, then pass through membrane filtration.
The activating agent be charcoal 10-30 parts, 2-10 parts of sulphur, 2-3 parts of dicyandiamide, 2-3 parts of bentonite, cornstarch
3-5 parts.
The preservative is sodium sorbate 10-20 parts by weight, butyl p-hydroxybenzoate 30-45 parts by weight, nitrofurazone
The mixture that derivative 20-35 parts by weight are constituted.
The catalysis is diethanolamine 15-35 parts by weight, hexyl acrylate 20-40 parts by weight, sodium metavanadate 10-25 weight
The mixture that part is constituted.
Example one
Urea for vehicle formula, including high-purity urea, deionized water and additive, the additive include activating agent, preservative and
Catalyst, high-purity urea entirety accounting 32%, the deionized water accounting 67%, the additive accounting 1%；The activity
Agent and soft dose of the profit and the proportion of the preservative press 0.4:0.35:0.25.
Manufacturing process steps are as follows:
A. high-purity urea is decomposed, after sorption enhanced with carbon dioxide and ammonia synthesizing amino ammonium formate under high temperature and pressure,
Crystallization, separation, drying form；
Raw water is carried out mechanical filter by b. deionized water processing method, is gone in water removal to filter after mechanical admixture using active carbon, be made
The electrolyte and macromolecular compound that 95% or more is filtered out with reverse osmosis membrane are irradiated in decomposition water by ultraviolet light and are not easy to be lived
Property charcoal absorption small organic compound, then pass through membrane filtration；
C. high-purity urea is mixed with deionized water by fixed proportion, activating agent then is added, catalyst is stirred mixing；
D. after the completion of mixing, stop stirring, carry out high-temperature sterilization, temperature is controlled at 75-90 DEG C, continues 5-12 minutes, high temperature disappears
After poison, then carry out disinfection by ultraviolet light；
E. raw material is packed: the solution sterilized being fitted into bottled packing machine, by being fitted into Packaging Bottle according to fixed weight, often
1000 grams of bottle after the completion of loading, adds preservative, is integrally sealed processing, completes production.
Example two
Urea for vehicle formula, including high-purity urea, deionized water and additive, the additive include activating agent, preservative and
Catalyst, high-purity urea entirety accounting 32%, the deionized water accounting 67%, the additive accounting 1%；The activity
Agent and soft dose of the profit and the proportion of the preservative press 0.4:0.35:0.25.
Manufacturing process steps are as follows:
Ammonia by purification 2.8~4.5 is mixed into synthesis in molar ratio with carbon dioxide by a. high-purity urea processing method
Tower, tower pressure interior force are 13.8~24.6 MPa, and temperature is 180~200 DEG C, and the reaction mass residence time is 25~40min, is obtained
Urea liquid containing superfluous ammonia and aminoquinoxaline cools down through decompression, will isolate the urea liquid after ammonia and aminoquinoxaline and evaporates
To 99.5% or more, then it is granulated to obtain urea product in granulation tower；
Raw water is carried out mechanical filter by b. deionized water processing method, goes in water removal to filter after mechanical admixture using active carbon,
The electrolyte and macromolecular compound that 95% or more is filtered out using reverse osmosis membrane, by ultraviolet light irradiate decompose water in be not easy by
The small organic compound of activated carbon adsorption, then pass through membrane filtration；
C. high-purity urea is mixed with deionized water by fixed proportion, activating agent then is added, catalyst is stirred mixing；
D. after the completion of mixing, stop stirring, carry out high-temperature sterilization, temperature is controlled at 75-90 DEG C, continues 5-12 minutes, high temperature disappears
After poison, then carry out disinfection by ultraviolet light；
E. raw material is packed: the solution sterilized is fitted into bottled packing machine, by being fitted into Packaging Bottle according to fixed weight,
500 grams every bottle, after the completion of loading, preservative is added, is integrally sealed processing, completes production.
Formula provided by the invention can not only improve entire automobile-used urine by being added to activating agent, preservative and catalyst
The reaction efficiency of element, while the shelf-life of solvent is extended, while formula of the invention is applicable in and produces in enormous quantities, cost of material
Low, process is simple.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (8)
1. urea for vehicle formula, it is characterised in that: including high-purity urea, deionized water and additive, the additive includes living
Property agent, preservative and catalyst, high-purity urea entirety accounting 32%, the deionized water accounting 67%, the additive account for
Than 1%；The activating agent and soft dose of the profit and the proportion of the preservative press 0.4:0.35:0.25.
2. urea for vehicle formula according to claim 1, which is characterized in that the molecule accounting C:O:N of high-purity urea:
H=12:16:28:4, the wherein percentage composition 46.67% of nitrogen, the degree 20% of carbon, the percentage composition 26.67% of oxygen, hydrogen
Percentage composition 6.66%.
3. urea for vehicle formula according to claim 2, which is characterized in that high-purity Urea Process one uses titanium dioxide
Synthesizing amino ammonium formate crystallizes after decomposition, sorption enhanced under high temperature and pressure for carbon and ammonia, and separation, drying form.
4. urea for vehicle formula according to claim 2, which is characterized in that high-purity Urea Process two, it will be by net
The ammonia and carbon dioxide of change 2.8~4.5 are mixed into synthetic tower in molar ratio, and tower pressure interior force is 13.8~24.6 MPa, temperature
It is 180~200 DEG C, the reaction mass residence time is 25~40min, the urea liquid containing superfluous ammonia and aminoquinoxaline is obtained,
Cool down through decompression, the urea liquid after ammonia and aminoquinoxaline will be isolated and be evaporated to 99.5% or more, then be granulated to obtain in granulation tower
Urea product.
5. urea for vehicle formula according to claim 1, which is characterized in that the deionized water processing method, by raw water
Mechanical filter is carried out, goes in water removal to filter after mechanical admixture using active carbon, 95% or more electrolyte is filtered out using reverse osmosis membrane
And macromolecular compound, the small organic compound for being not easy to be tightly held by activated carbon decomposed in water is irradiated by ultraviolet light, then pass through
Membrane filtration.
6. urea for vehicle formula according to claim 1, which is characterized in that the activating agent is charcoal 10-30 parts, sulphur
2-10 parts of sulphur, 2-3 parts of dicyandiamide, 2-3 parts of bentonite, 3-5 parts of cornstarch.
7. urea for vehicle formula according to claim 1, which is characterized in that the preservative is sodium sorbate 10-20 weight
Measure the mixture of part, butyl p-hydroxybenzoate 30-45 parts by weight, nitrofurazone derivative 20-35 parts by weight composition.
8. urea for vehicle formula according to claim 1, which is characterized in that the catalyst is diethanolamine 15-35 weight
Measure the mixture of part, hexyl acrylate 20-40 parts by weight, sodium metavanadate 10-25 parts by weight composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711297267.1A CN109894003A (en) | 2017-12-08 | 2017-12-08 | Urea for vehicle formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711297267.1A CN109894003A (en) | 2017-12-08 | 2017-12-08 | Urea for vehicle formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109894003A true CN109894003A (en) | 2019-06-18 |
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ID=66940635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711297267.1A Pending CN109894003A (en) | 2017-12-08 | 2017-12-08 | Urea for vehicle formula |
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| CN (1) | CN109894003A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111533670A (en) * | 2020-04-30 | 2020-08-14 | 辽宁三特石油化工有限公司 | Urea aqueous solution |
| CN114929651A (en) * | 2020-01-08 | 2022-08-19 | 蒂森克虏伯肥料技术有限公司 | Method for producing fertilizer |
-
2017
- 2017-12-08 CN CN201711297267.1A patent/CN109894003A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114929651A (en) * | 2020-01-08 | 2022-08-19 | 蒂森克虏伯肥料技术有限公司 | Method for producing fertilizer |
| CN114929651B (en) * | 2020-01-08 | 2024-03-15 | 蒂森克虏伯肥料技术有限公司 | Method for producing fertilizer |
| CN111533670A (en) * | 2020-04-30 | 2020-08-14 | 辽宁三特石油化工有限公司 | Urea aqueous solution |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190618 |
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| WD01 | Invention patent application deemed withdrawn after publication |