CN111111441A - Production method of high-purity urea solution for vehicles - Google Patents
Production method of high-purity urea solution for vehicles Download PDFInfo
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- CN111111441A CN111111441A CN201911276363.7A CN201911276363A CN111111441A CN 111111441 A CN111111441 A CN 111111441A CN 201911276363 A CN201911276363 A CN 201911276363A CN 111111441 A CN111111441 A CN 111111441A
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- purity
- preparation barrel
- urea solution
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9413—Processes characterised by a specific catalyst
- B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9404—Removing only nitrogen compounds
- B01D53/9409—Nitrogen oxides
- B01D53/9431—Processes characterised by a specific device
Abstract
The invention discloses a production method of a high-purity urea solution for vehicles, which comprises the following steps of firstly, carrying out water quality distillation, putting water into a distiller for treatment, arranging a flow guide pipe on a water outlet of the distiller, connecting one side of the flow guide pipe with a preparation barrel, secondly, carrying out proportioning, adding high-purity industrial urea into the preparation barrel, mixing and stirring the high-purity industrial urea and the distilled water with the specific gravity of 100 kilograms of water and 32.53 kilograms of high-purity industrial urea in parts by weight, fully mixing and stirring the solution in the preparation barrel to obtain the high-purity urea solution with the concentration content of 32.5%, fourthly, carrying out barreling, and barreling the high-purity urea solution obtained in the third step. The method has the beneficial effect of high content of the prepared urea, and is mainly used for preparing the high-purity urea solution for vehicles.
Description
Technical Field
The invention relates to the technical field of production of automotive urea solution, in particular to a production method of automotive high-purity urea solution.
Background
The automobile urea is a high-purity urea solution which is developed in recent years and is suitable for an SCR (selective catalytic reduction) system, under the condition of high temperature (above 300 ℃), the urea solution is firstly decomposed into ammonia gas, and then under the action of a special catalyst, the ammonia gas and nitrogen oxides in tail gas of diesel vehicles are subjected to oxidation-reduction reaction to generate nitrogen and water, so that the emission of the nitrogen oxides reaches the emission standard.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a production method of a high-purity urea solution for vehicles, which has high urea content.
The technical scheme adopted by the invention for realizing the purpose is as follows: a production method of high-purity urea solution for vehicles comprises the following steps,
firstly, water distillation is carried out
Putting water into a distiller for treatment, wherein a flow guide pipe is arranged on a water outlet of the distiller, and one side of the flow guide pipe is connected with a preparation barrel;
secondly, proportioning
Adding high-purity industrial urea into the preparation barrel, wherein the high-purity industrial urea and distilled water are 100 kg of water and 32.53 kg of high-purity industrial urea in parts by weight;
thirdly, mixing and stirring
Fully mixing and stirring the solution in the preparation barrel to obtain a high-purity urea solution with the concentration of 32.5%;
fourthly, barreling is carried out
And barreling the high-purity urea solution obtained in the third step.
And adding an aldehyde treating agent in the step three to reduce the aldehyde content in the solution, wherein the aldehyde treating agent is a cleaning type oxidizing agent hydrogen peroxide.
And fourthly, when barreling is carried out, filter screens are arranged on the carrying barrels.
Before the preparation barrel is used, the preparation barrel is carefully cleaned, and cleaning solution is clean water.
The distilled water received by the preparation barrel for the first time is discharged out of the preparation barrel after being stirred in the preparation barrel.
The invention has the beneficial effects that: the method has the advantages of low energy consumption, low resource utilization and good feasibility, and can ensure the urea content in the urea solution by adding high-purity industrial urea for stirring, and is suitable for large-scale popularization.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1 distiller, 2 draft tubes and 3 preparation barrels.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, a method for producing a high purity urea solution for vehicles has the steps of,
firstly, water distillation is carried out
Putting water into a distiller 1 for treatment, wherein a flow guide pipe 2 is arranged on a water outlet of the distiller 1, and one side of the flow guide pipe 2 is connected with a preparation barrel 3;
secondly, proportioning
Adding high-purity industrial urea into the preparation barrel 3, wherein the specific gravity of the high-purity industrial urea and distilled water is 100 kilograms and 32.53 kilograms in parts by weight;
thirdly, mixing and stirring
Fully mixing and stirring the solution in the preparation barrel 3 to obtain a high-purity urea solution with the concentration content of 32.5%;
fourthly, barreling is carried out
And (4) barreling the high-purity urea solution obtained in the step three.
Example 2
Referring to fig. 1, in the present invention, an aldehyde treating agent is added in the third step to reduce the aldehyde content in the solution, and the aldehyde treating agent is a cleaning type oxidizing agent, hydrogen peroxide, which can reduce the aldehyde content in the solution;
fourthly, when barreling is carried out, filter screens are arranged on the receiving barrels and can be used for filtering;
before the preparation barrel 3 is used, the preparation barrel 3 is carefully cleaned, and the cleaning solution is clean water to prevent impurities from being reserved in the preparation barrel 3, so that the proportion of the urea solution is influenced;
the distilled water received by the preparation barrel 3 for the first time is discharged out of the preparation barrel 3 after being stirred in the preparation barrel 3, and the preparation barrel 3 is cleaned for the second time.
Example 3
Referring to fig. 1, the working principle of the present invention is: when the method is used, the water for preparing the urea solution is obtained by adopting a distillation mode, the water for distillation can remove impurities in the water, so that high-purity water is obtained, the method is low in energy consumption, low in resource utilization and good in feasibility, high-purity industrial urea is added for stirring, so that the urea content in the urea solution can be ensured, the method is low in energy consumption, high in urea content in the urea solution and suitable for large-scale popularization, and meanwhile, the method is simple in manufacturing apparatus, can be realized only by the distiller 1, the flow guide pipe 2 and the preparation barrel 3, and can be conveniently made by a user.
Example 4
In the invention, 32.53 kg of high-purity industrial urea is prepared by every 100 kg of distilled water, wherein 0.03 kg of high-purity industrial urea is a natural extinction value when the high-purity industrial urea is dissolved in the distilled water, thereby ensuring the urea content in the urea solution.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The production method of the high-purity urea solution for the vehicle is characterized by comprising the following steps,
firstly, water distillation is carried out
Putting water into a distiller (1) for treatment, wherein a flow guide pipe (2) is arranged on a water outlet of the distiller (1), and one side of the flow guide pipe (2) is connected with a preparation barrel (3);
secondly, proportioning
Adding high-purity industrial urea into the preparation barrel (3), wherein the specific gravity of the high-purity industrial urea and distilled water is 100 kilograms and 32.53 kilograms in parts by weight;
thirdly, mixing and stirring
Fully mixing and stirring the solution in the preparation barrel (3) to obtain a high-purity urea solution with the concentration of 32.5%;
fourthly, barreling is carried out
And barreling the high-purity urea solution obtained in the third step.
2. The method for producing a high purity urea solution for vehicles according to claim 1, wherein: and adding an aldehyde treating agent in the step three to reduce the aldehyde content in the solution, wherein the aldehyde treating agent is a cleaning type oxidizing agent hydrogen peroxide.
3. The method for producing a high purity urea solution for vehicles according to claim 1, wherein: and fourthly, when barreling is carried out, filter screens are arranged on the carrying barrels.
4. The method for producing a high purity urea solution for vehicles according to claim 1, wherein: before the preparation barrel (3) is used, the preparation barrel (3) is carefully cleaned, and cleaning solution is clean water.
5. The method for producing a high purity urea solution for vehicles according to claim 1, wherein: the distilled water received by the preparation barrel (3) for the first time is discharged out of the preparation barrel (3) after being stirred in the preparation barrel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276363.7A CN111111441A (en) | 2019-12-12 | 2019-12-12 | Production method of high-purity urea solution for vehicles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911276363.7A CN111111441A (en) | 2019-12-12 | 2019-12-12 | Production method of high-purity urea solution for vehicles |
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| CN111111441A true CN111111441A (en) | 2020-05-08 |
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| CN201911276363.7A Pending CN111111441A (en) | 2019-12-12 | 2019-12-12 | Production method of high-purity urea solution for vehicles |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100087594A1 (en) * | 2008-10-07 | 2010-04-08 | Yu-Chun Chou | Method of preparing non-toxic water paint |
| CN104258730A (en) * | 2014-08-15 | 2015-01-07 | 河南骏化发展股份有限公司 | Preparation method of automobile urea solution |
| CN105032184A (en) * | 2015-08-05 | 2015-11-11 | 胡坚南 | Preparation method of automotive urea solution having automotive scale blockage prevention function |
| CN105797584A (en) * | 2016-03-29 | 2016-07-27 | 河北鑫达润滑油科技有限公司 | Production method of vehicle-used urea solution |
| CN206016924U (en) * | 2016-09-10 | 2017-03-15 | 山东新蓝环保科技有限公司 | Vehicle-mounted urea solution preparing device |
| CN109731487A (en) * | 2019-01-22 | 2019-05-10 | 河南弘康环保科技有限公司 | A kind of preparation method of urea for vehicle solution |
| CN109894005A (en) * | 2017-12-11 | 2019-06-18 | 广州蓝禾素环保科技有限公司 | A kind of production technology of low-methoxyl aldehyde urea for vehicle |
| CN109989805A (en) * | 2018-01-02 | 2019-07-09 | 何林道 | A kind of production method of novel automobile urea liquid |
-
2019
- 2019-12-12 CN CN201911276363.7A patent/CN111111441A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100087594A1 (en) * | 2008-10-07 | 2010-04-08 | Yu-Chun Chou | Method of preparing non-toxic water paint |
| CN104258730A (en) * | 2014-08-15 | 2015-01-07 | 河南骏化发展股份有限公司 | Preparation method of automobile urea solution |
| CN105032184A (en) * | 2015-08-05 | 2015-11-11 | 胡坚南 | Preparation method of automotive urea solution having automotive scale blockage prevention function |
| CN105797584A (en) * | 2016-03-29 | 2016-07-27 | 河北鑫达润滑油科技有限公司 | Production method of vehicle-used urea solution |
| CN206016924U (en) * | 2016-09-10 | 2017-03-15 | 山东新蓝环保科技有限公司 | Vehicle-mounted urea solution preparing device |
| CN109894005A (en) * | 2017-12-11 | 2019-06-18 | 广州蓝禾素环保科技有限公司 | A kind of production technology of low-methoxyl aldehyde urea for vehicle |
| CN109989805A (en) * | 2018-01-02 | 2019-07-09 | 何林道 | A kind of production method of novel automobile urea liquid |
| CN109731487A (en) * | 2019-01-22 | 2019-05-10 | 河南弘康环保科技有限公司 | A kind of preparation method of urea for vehicle solution |
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