CN105439907B - A kind of production technology of stability urea - Google Patents
A kind of production technology of stability urea Download PDFInfo
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- CN105439907B CN105439907B CN201510871458.9A CN201510871458A CN105439907B CN 105439907 B CN105439907 B CN 105439907B CN 201510871458 A CN201510871458 A CN 201510871458A CN 105439907 B CN105439907 B CN 105439907B
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- urea
- stability
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- medicament
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Abstract
The present invention discloses a kind of production technology of chemical substance, is specifically related to a kind of production technology of stability urea.The production technology includes the processing step by the urea liquid for being dissolved with stability medicament is introduced containing urea liquid, and the biodiversity content of the urea liquid for being dissolved with stability medicament is not higher than 20%.The production technology of the stability urea of the present invention can effectively reduce process energy consumption.
Description
Technical field
The present invention relates to a kind of production technology of chemical substance, a kind of production technology of stability urea is specifically related to.
Background technology
The chemical name of urea is carbonyl diamide, and its molecular formula is CO（NH2）2, nitrogen content is 46.65%, be nitrogen content most
High solid nitrogen.Stability urea is a kind of new chemical products, and gained contains its production technology mainly after urea synthesizing
Stability medicament is introduced in urea liquid, so as to prepare stability urea product.
But in actual production process, the production technology of stability urea is often limited as entering gained containing urea liquid
Stability liquid medicine is configured by solvent of water before row evaporation and add system, excessive moisture is removed after pervaporation, so as to make
Grain production stability urea product.In above-mentioned production process, there are many problems, the moisture of such as addition can be evaporated
The substantial amounts of energy consumptions of Cheng Zengjia；In addition, above-mentioned production technology is in actual mechanical process, in order to control the moisture of products obtained therefrom, lead to
Often it is selected at containing the addition stability medicament aqueous solution before urea liquid evaporation, but so operation can bring limit to production
System, underaction is produced while operating not succinct enough；Especially when simultaneously needs produce urea product and the production of stability urea
, it is necessary to estimate first products obtained therefrom yield when product or other urea products, with preceding to urea in the evaporation containing urea liquid
Solution is classified, to prepare the urea product of different demands amount.
The content of the invention
In view of this, the present invention provides a kind of production technology of stability urea, and it can effectively reduce process energy consumption.
To solve above technical problem, the technical scheme that the present invention is provided is to use a kind of production work of stability urea
Skill, the production technology is included in containing the processing step that the urea liquid for being dissolved with stability medicament is introduced in urea liquid, institute
The biodiversity content for stating the urea liquid for being dissolved with stable pharmaceutical is not higher than 20%.
It is preferred that, the production technology is specially following steps：
1）Urea liquid evaporation will be contained, evaporation liquid is obtained；
2）In step 1）The urea liquid mixing for being dissolved with stability medicament is introduced in gained evaporation liquid, medicine containing stability is obtained
Agent mixed liquor；
3）By step 2）Gained medicament containing stability mixed liquor carries out granulation and prepares stability urea；
The biodiversity content of the urea liquid for being dissolved with stability medicament is not higher than 20%.
It is preferred that, the stability medicament is urease inhibitor.
It is preferred that, the biodiversity content of the urea liquid for being dissolved with stability medicament is 10%-15%.
It is preferred that, the step 1）In containing urea liquid carry out one section evaporation and dual circulation after must evaporate liquid.
It is preferred that, described is to be formed by ammonia with carbon dioxide through high-temperature high-voltage reaction containing urea in urea liquid.
It is preferred that, the urea liquid for being dissolved with stability medicament is to be not higher than with fusing urea or biodiversity content
20% aqueous solution of urea prepares for solvent dissolving urease inhibitor.
It is preferred that, the urea liquid for being dissolved with stability medicament is using fusing urea or biodiversity content as 10%-
15% aqueous solution of urea is that solvent dissolves urease inhibitor and prepared.
It is preferred that, the stability medicament is normal-butyl thiophosphoryl triamine.
It is preferred that, the urea liquid for being dissolved with stability medicament is that dissolving normal-butyl is thio by solvent of fusing urea
Phosphoric triamide and prepare.
The production technology of herein described stability urea, it can effectively reduce process energy consumption.
Embodiment
In order that those skilled in the art more fully understands technical scheme, with reference to embodiment
The present invention is described in further detail.
The production technology of herein described stability urea, which is included in contain to introduce in urea liquid, is dissolved with stability medicament
Urea liquid processing step, the biodiversity content of the urea liquid for being dissolved with stable pharmaceutical is not higher than 20%.
It is preferred that, the production technology is specially following steps：
1）Urea liquid evaporation will be contained, evaporation liquid is obtained；
2）In step 1）The urea liquid mixing for being dissolved with stability medicament is introduced in gained evaporation liquid, medicine containing stability is obtained
Agent mixed liquor；
3）By step 2）Gained medicament containing stability mixed liquor carries out granulation and prepares stability urea；
The biodiversity content of the urea liquid for being dissolved with stability medicament is not higher than 20%.
The urea that stability medicament can be dissolved with the production technology of herein described stability urea without limiting is molten
The addition point of liquid, it is dissolved with after the urea liquid of stability medicament by being added in containing urea liquid, big due to having evaded
The introducing of moisture is measured, so as to effectively reduce process energy consumption.
The application is preferred to use above-mentioned specific steps, i.e., added after it will contain urea liquid evaporation and be dissolved with stability medicament
Urea liquid mixing, then carry out granulation prepare stability urea mode；Which is in addition to the application effect, and it is also
The moisture of addition can be removed in the way of direct obstructed pervaporation can still obtain meeting the stability urine of moisture requirement content
Plain product；Under normal circumstances, it can carry out granulating obtaining urea product after urea liquid evaporation will be contained, but due to being needed in the application
The urea liquid for being dissolved with stability medicament is added, this will necessarily introduce portion of water, in order to be able to simplify operating procedure, control
Making the biodiversity content for the urea liquid for being dissolved with stability medicament can select after being evaporated containing urea liquid below 20%
Aforementioned stable liquid medicine is introduced, while the introducing of the stability liquid medicine does not interfere with the progress of subsequent granulation step,
Namely mean to introduce stability medicament source solution after evaporation, it, which still can directly be granulated, obtains meeting moisture requirement
Stability urea product.
The stability medicament that the application is used can be for urea stabilization, it is to avoid it is various that urea molecule is decomposed
The urease inhibitor used on stability medicament, especially traditional handicraft, in the application production technology, can be more preferably
Urease inhibitor is used to promote stability medicament to be preferably dissolved in the relatively low urea liquid of moisture to form molten
Solution has the urea liquid of stability medicament.
Present inventor experiments prove that, the biodiversity content being dissolved with the urea liquid of stability medicament can
To be preferably 10%-15%, there is the effect for preferably simplifying production technology compared to not higher than 20%.
Herein described evaporation step containing urea liquid can be the existing evaporation technology step for producing urea, for example, only adopt
The mode combined with one section of evaporation or one section of evaporation and dual circulation.
The herein described urea source containing in urea liquid can be obtained by various synthesis technique steps, for example
Formed by ammonia with carbon dioxide through high-temperature high-voltage reaction.
The herein described urea liquid for being dissolved with stability medicament can be prepared by following preparation method
's：Suppress for example with the aqueous solution of urea that 20% is not higher than using fusing urea or biodiversity content as solvent dissolving urase
Agent and obtain, wherein can be preferably that use biodiversity to be 10%-15% aqueous solution of urea as solvent, or more can to enter
One step preferably dissolves one of urease inhibitor using fusing urea as solvent --- normal-butyl thiophosphoryl triamine, so that
Prepare related solution.
Herein described is the solution for mainly containing urea and moisture containing urea liquid, and remaining composition contained is impurity
Composition；The herein described urea liquid for being dissolved with stability medicament is mainly contain stability medicament, urea and moisture molten
Liquid, remaining composition contained is impurity component.
The application will be described in detail using implementation below.
The production technology of the first embodiment of 1-the application of embodiment：
Embodiment 1.1
1）The urea liquid mixing for being dissolved with stability medicament is introduced in containing urea liquid, the mixing of medicament containing stability is obtained
Liquid；
2）By step 1）Gained medicament containing stability mixed liquor is carried out after one section of evaporation and dual circulation, and granulation prepares stable
Property urea.
The biodiversity content of the urea liquid for being dissolved with stability medicament is not higher than 20%, and stability medicament
For urease inhibitor, use biodiversity content be not higher than 20% aqueous solution of urea prepared for solvent dissolving urease inhibitor it is molten
Solution has the urea liquid of stable pharmaceutical, and solution temperature is 60-100 DEG C when it dissolves.
During the progress of above-mentioned technique, the biodiversity content d1 of final gained stability urea is determined（%）And urea
Mass content m1（%）.
Using the different in moisture mass content D for the urea liquid for being dissolved with stability medicament（%）, remaining condition is identical, example
Such as it is dissolved with the quality H1 of the urea liquid of stability medicament（g）, H2 containing urea solution mass（g）, its urea quality content m2
（%）, biodiversity content d2 after evaporation（%）Deng.
Acquired results such as following table：
Embodiment 1.2
Remaining condition is identical with embodiment 1.1, but uses stability medicament for one of urease inhibitor --- normal-butyl sulphur
For phosphoric triamide, and using fusing urea one of urease inhibitor is dissolved as solvent --- normal-butyl thiophosphoryl triamine system
The standby urea liquid for being dissolved with stability medicament.Acquired results such as following table：
The application production technology of 2-the application of embodiment, second of embodiment：
Embodiment 2.1
1）Urea liquid will be contained to carry out after one section of evaporation and dual circulation, evaporation liquid is obtained；
2）In step 1）The urea liquid mixing for being dissolved with stability medicament is introduced in gained evaporation liquid, medicine containing stability is obtained
Agent mixed liquor；
3）By step 2）Gained medicament containing stability mixed liquor carries out granulation and prepares stability urea.
The biodiversity content of the urea liquid for being dissolved with stability medicament is not higher than 20%, and stability medicament
For urease inhibitor, use biodiversity content be not higher than 20% aqueous solution of urea prepared for solvent dissolving urease inhibitor it is molten
Solution has the urea liquid of stability medicament, and solution temperature is 60-100 DEG C when it dissolves.
During the progress of above-mentioned technique, the biodiversity content d1 of final gained stability urea is determined（%）And urea
Mass content m1（%）.
Using the different in moisture mass content D for the urea liquid for being dissolved with stability medicament（%）, remaining condition is identical, example
Such as it is dissolved with the quality H1 of the urea liquid of stability medicament（g）, H2 containing urea solution mass（g）, its urea quality content m2
（%）, the biodiversity content d2 of liquid is evaporated after evaporation（%）Deng.
Acquired results such as following table：
Embodiment 2.2
Remaining condition is identical with embodiment 2.1, but uses stability medicament for one of urease inhibitor --- normal-butyl sulphur
For phosphoric triamide, and using fusing urea one of urease inhibitor is dissolved as solvent --- normal-butyl thiophosphoryl triamine system
The standby urea liquid for being dissolved with stability medicament.Acquired results such as following table：
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be defined by claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of production technology of stability urea, it is characterised in that：The production technology is specially following steps：
1）Urea liquid evaporation will be contained, evaporation liquid is obtained；
2）In step 1）The urea liquid mixing for being dissolved with stability medicament is introduced in gained evaporation liquid, medicament containing stability is obtained and mixes
Close liquid；
3）By step 2）Gained medicament containing stability mixed liquor carries out granulation and prepares stability urea；
The urea liquid for being dissolved with stability medicament is solvent for the aqueous solution of urea using biodiversity content as 10%-15%
Steady dissolution medicament and prepare；
The stability medicament is urease inhibitor.
2. the production technology of stability urea according to claim 1, it is characterised in that：The step 1）In containing urea it is molten
Liquid must evaporate liquid after carrying out one section of evaporation and dual circulation.
3. the production technology of stability urea according to claim 1, it is characterised in that：It is described to contain urea in urea liquid
To be formed by ammonia with carbon dioxide through high-temperature high-voltage reaction.
4. the production technology of stability urea according to claim 1, it is characterised in that：The stability medicament is positive fourth
Base thiophosphoryl triamide.
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| CN201510871458.9A CN105439907B (en) | 2015-12-02 | 2015-12-02 | A kind of production technology of stability urea |
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| CN201510871458.9A CN105439907B (en) | 2015-12-02 | 2015-12-02 | A kind of production technology of stability urea |
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| CN105439907A CN105439907A (en) | 2016-03-30 |
| CN105439907B true CN105439907B (en) | 2017-10-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106748570A (en) * | 2016-12-02 | 2017-05-31 | 锦西天然气化工有限责任公司 | A kind of production technology of stability urea |
| CN108101654A (en) * | 2018-01-03 | 2018-06-01 | 锦西天然气化工有限责任公司 | One kind is containing silicon fertilizer and its preparation method and application |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465553A (en) * | 2002-06-28 | 2004-01-07 | 中国科学院沈阳应用生态研究所 | Stable urea and production process |
| CN1872806A (en) * | 2006-06-09 | 2006-12-06 | 大连轻工业学院 | Compound fertilizer of containing long acting urea, and preparation method |
| CN101134697A (en) * | 2006-09-01 | 2008-03-05 | 中国科学院沈阳应用生态研究所 | Nitration inhibitor and its application in stabile fertilizer |
| CN102442868A (en) * | 2011-09-29 | 2012-05-09 | 廊坊北鑫化工有限公司 | Additive for urea with long-term stability |
| CN103896686A (en) * | 2014-04-17 | 2014-07-02 | 张彬 | Stability urea and preparation method thereof |
| CN104926570A (en) * | 2015-02-10 | 2015-09-23 | 四川美丰化工股份有限公司 | Method of producing urea with high stability |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134707A (en) * | 1983-01-20 | 1984-08-02 | Shiseido Co Ltd | Cosmetic |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465553A (en) * | 2002-06-28 | 2004-01-07 | 中国科学院沈阳应用生态研究所 | Stable urea and production process |
| CN1872806A (en) * | 2006-06-09 | 2006-12-06 | 大连轻工业学院 | Compound fertilizer of containing long acting urea, and preparation method |
| CN101134697A (en) * | 2006-09-01 | 2008-03-05 | 中国科学院沈阳应用生态研究所 | Nitration inhibitor and its application in stabile fertilizer |
| CN102442868A (en) * | 2011-09-29 | 2012-05-09 | 廊坊北鑫化工有限公司 | Additive for urea with long-term stability |
| CN103896686A (en) * | 2014-04-17 | 2014-07-02 | 张彬 | Stability urea and preparation method thereof |
| CN104926570A (en) * | 2015-02-10 | 2015-09-23 | 四川美丰化工股份有限公司 | Method of producing urea with high stability |
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