CN103710171A - Acidic solid cleaning agent and preparation method thereof - Google Patents
Acidic solid cleaning agent and preparation method thereof Download PDFInfo
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- CN103710171A CN103710171A CN201310713203.0A CN201310713203A CN103710171A CN 103710171 A CN103710171 A CN 103710171A CN 201310713203 A CN201310713203 A CN 201310713203A CN 103710171 A CN103710171 A CN 103710171A
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- cleaning agent
- nitric acid
- solid cleaning
- acidic solid
- urea
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Abstract
The invention relates to an acidic solid cleaning agent. The acidic solid cleaning agent is an acicular crystal product separated from a reaction of nitric acid and urea, and the composition ratio of nitric acid to urea can be properly and freely added according to nitric acid concentration and the preparation demand. The acidic solid cleaning agent is prepared by the following steps: firstly, preparing water bath, and maintaining the temperature at 25-95 DEG C; adding nitric acid into a reaction container, and stirring; adding urea, and continuously stirring after urea is dissolved; cooling the stirred mixture in a cooling device at a cooling temperature of minus 5 to 20 DEG C, and stirring to generate acicular crystals; separating the generated acicular crystals to obtain the acidic solid cleaning agent. After being dissolved in water, the acidic solid cleaning agent provided by the invention is mainly used for cleaning the inner surfaces of such apparatuses as container, pipeline and the like in a dairy product processing process, the acidic solid cleaning agent is convenient to transport and use, and meanwhile, the acidic solid cleaning agent has the advantages of effectively reducing or eliminating nitrite in the system.
Description
Technical field
The present invention relates to a kind of solid acid clean-out system, particularly solid acid clean-out system and preparation method for Dairy Industry equipment.
Background technology
Traditional Dairy Industry equipment washing is used liquid ceanser, in transportation, easily reveals and drops, and uses and also easily occurs the phenomenon that part solute solidifies simultaneously under cold condition, to use, makes troubles.
Summary of the invention
This technical problem that will solve is to provide a kind of solid acid clean-out system, to solve equipment washing, use liquid ceanser, in transportation, easily reveal and drop, under cold condition, use and also easily occur the phenomenon that part solute solidifies simultaneously, to use, make troubles, the problem of the solid acid clean-out system that the Dairy Industry equipment surface of highly effective and safe clean to be used is provided.
For solving the technical problem existing, the technical solution used in the present invention is: solid acid clean-out system is the nitric acid needle crystal product separated with urea reaction.
The mother liquor of solid acid clean-out system preparation process of the present invention can be used continuously, thus, the component proportion of nitric acid and urea can need to carry out suitable free proportioning interpolation according to concentration of nitric acid and preparation, it is example that the nitric acid that mass concentration is 68% is take in the present invention, preferably the mass ratio of nitric acid and urea is 5～0.5, the quality that the nitric acid of other concentration can convert and use according to the nitric acid of above-mentioned concentration.
The preparation method of solid acid clean-out system, concrete steps are as follows:
1) be ready to water-bath, temperature remains on 25 ℃～95 ℃;
2) nitric acid is joined in reaction vessel, stir;
3) add urea, after dissolving, continue again to stir;
4) mixture being uniformly mixed is put into refrigerating unit cooling, cooling temperature is-5 ℃～20 ℃, produces while stirring needle crystal;
5) needle crystal producing is separated, obtain solid acid clean-out system.
Use solid acid clean-out system of the present invention to compare traditional liquid acidic clean-out system, in transportation, there is clear superiority, product is packaged convenience not only, in transportation, do not worry losing loose leakage problem, and freight charges significantly reduce before, with 48% traditional liquid clean-out system, calculate, freight charges are saved and are surpassed 50%.
Solid acid clean-out system of the present invention is dissolved in the cleaning that is mainly used in the internal surface of the equipment such as container used in diary product process, pipeline after water, the present invention can solve equipment washing and use liquid ceanser, in transportation, easily reveal and drop, under cold condition, use and also easily occur the phenomenon that part solute solidifies simultaneously, to use, make troubles, the problem of the solid acid clean-out system that the Dairy Industry equipment surface of highly effective and safe clean to be used is provided, meanwhile, also there is effective minimizing or the system of elimination nitrite.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Use nitric acid and urea to make solid acid clean-out system by certain technique, wherein, nitric acid (68% the nitric acid of take is example, and other concentration can be used according to the mass conversion of nitric acid) is 5～0.5 with the weight ratio of urea, and synthetic method comprises the steps:
1) be ready to water-bath, constant temperature to 25 ℃～95 ℃;
2) nitric acid is joined in reaction vessel, stir;
3) add urea, after dissolving, continue again to stir 1 hour;
4) mixture being uniformly mixed is put into refrigerating unit cooling, cooling temperature is-5 ℃～20 ℃, produces while stirring needle crystal;
5) above process is carried out after 6 hours～14 hours, centrifugation, and mother liquor is stayed and is continued next time to use.
Embodiment 1: constant temperature water bath to 50 ℃, take 68% nitric acid 80g, add in 250mL beaker, then add urea 50g, continue to stir 1 hour, beaker is moved in refrigerating unit, 10 ℃ of cooling temperatures, maintain and stir 10 hours, produce needle crystal product, after centrifugation, mother liquor leaves time use.
Embodiment 2: working method is with embodiment 1, and bath temperature changes 75 ℃ into, obtains needle crystal product.
Embodiment 3: working method is with embodiment 2, and cooling temperature changes-5 ℃ of g into, obtains needle crystal product.
Embodiment 4: working method is with embodiment 2, and the cooling and stirring time changes 14 hours into, obtains needle crystal product.
Embodiment 5: working method is with embodiment 1, and bath temperature changes 90 ℃ into and changes, and obtains needle crystal product.
Claims (3)
1. a solid acid clean-out system is nitric acid and needle crystal product separated after urea reaction.
2. solid acid clean-out system according to claim 1, is characterized in that: the mass ratio of nitric acid and urea is 5～0.5, and wherein, the mass concentration of nitric acid is 68%.
3. the preparation method of solid acid clean-out system according to claim 1 and 2, concrete steps are as follows:
1) be ready to water-bath, temperature remains on 25 ℃～95 ℃;
2) nitric acid is joined in reaction vessel, stir;
3) add urea, after dissolving, continue again to stir;
4) mixture being uniformly mixed is put into refrigerating unit cooling, cooling temperature is-5 ℃～20 ℃, produces while stirring needle crystal;
5) needle crystal producing is separated, mother liquor is stayed and is continued next time to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310713203.0A CN103710171A (en) | 2013-12-12 | 2013-12-12 | Acidic solid cleaning agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310713203.0A CN103710171A (en) | 2013-12-12 | 2013-12-12 | Acidic solid cleaning agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103710171A true CN103710171A (en) | 2014-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310713203.0A Pending CN103710171A (en) | 2013-12-12 | 2013-12-12 | Acidic solid cleaning agent and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN103710171A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11214763B2 (en) | 2018-01-26 | 2022-01-04 | Ecolab Usa Inc. | Solidifying liquid amine oxide, betaine, and/or sultaine surfactants with a carrier |
| US11377628B2 (en) | 2018-01-26 | 2022-07-05 | Ecolab Usa Inc. | Solidifying liquid anionic surfactants |
| US11655436B2 (en) | 2018-01-26 | 2023-05-23 | Ecolab Usa Inc. | Solidifying liquid amine oxide, betaine, and/or sultaine surfactants with a binder and optional carrier |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2132511A (en) * | 1934-06-23 | 1938-10-11 | Henkel & Cie Gmbh | Cleaning composition and method |
| CN1583716A (en) * | 2004-06-14 | 2005-02-23 | 陕西福奥特实业有限公司 | Preparing method for inactive nitric acid powder |
| CN102491858A (en) * | 2011-12-20 | 2012-06-13 | 上海化工研究院 | Method for manufacturing urea-based nitrate slow-releasing compound fertilizer |
-
2013
- 2013-12-12 CN CN201310713203.0A patent/CN103710171A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2132511A (en) * | 1934-06-23 | 1938-10-11 | Henkel & Cie Gmbh | Cleaning composition and method |
| CN1583716A (en) * | 2004-06-14 | 2005-02-23 | 陕西福奥特实业有限公司 | Preparing method for inactive nitric acid powder |
| CN102491858A (en) * | 2011-12-20 | 2012-06-13 | 上海化工研究院 | Method for manufacturing urea-based nitrate slow-releasing compound fertilizer |
Non-Patent Citations (2)
| Title |
|---|
| 荣国斌等: "《大学有机化学基础》", 31 August 2000, 华东理工大学出版社，化学工业出版社 * |
| 陈颖超等: "硝酸脲的制备", 《天津化工》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11214763B2 (en) | 2018-01-26 | 2022-01-04 | Ecolab Usa Inc. | Solidifying liquid amine oxide, betaine, and/or sultaine surfactants with a carrier |
| US11377628B2 (en) | 2018-01-26 | 2022-07-05 | Ecolab Usa Inc. | Solidifying liquid anionic surfactants |
| US11655436B2 (en) | 2018-01-26 | 2023-05-23 | Ecolab Usa Inc. | Solidifying liquid amine oxide, betaine, and/or sultaine surfactants with a binder and optional carrier |
| US11834628B2 (en) | 2018-01-26 | 2023-12-05 | Ecolab Usa Inc. | Solidifying liquid anionic surfactants |
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Application publication date: 20140409 |