JP2004217827A - Acid cleaning agent composition - Google Patents
Acid cleaning agent composition Download PDFInfo
- Publication number
- JP2004217827A JP2004217827A JP2003008428A JP2003008428A JP2004217827A JP 2004217827 A JP2004217827 A JP 2004217827A JP 2003008428 A JP2003008428 A JP 2003008428A JP 2003008428 A JP2003008428 A JP 2003008428A JP 2004217827 A JP2004217827 A JP 2004217827A
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- JP
- Japan
- Prior art keywords
- acid
- sulfamic acid
- urea
- cleaning
- sulfamic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002253 acid Substances 0.000 title claims abstract description 17
- 239000000203 mixture Substances 0.000 title claims abstract description 16
- 239000012459 cleaning agent Substances 0.000 title abstract description 7
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 43
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004202 carbamide Substances 0.000 claims abstract description 21
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 239000007864 aqueous solution Substances 0.000 claims abstract description 18
- 230000007062 hydrolysis Effects 0.000 claims abstract description 15
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 235000013305 food Nutrition 0.000 claims abstract description 10
- OBMBUODDCOAJQP-UHFFFAOYSA-N 2-chloro-4-phenylquinoline Chemical compound C=12C=CC=CC2=NC(Cl)=CC=1C1=CC=CC=C1 OBMBUODDCOAJQP-UHFFFAOYSA-N 0.000 claims description 7
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid group Chemical group S(N)(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 235000013405 beer Nutrition 0.000 abstract description 4
- 235000013361 beverage Nutrition 0.000 abstract description 4
- 235000021056 liquid food Nutrition 0.000 abstract description 3
- 239000000243 solution Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- 230000002401 inhibitory effect Effects 0.000 description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- 150000007524 organic acids Chemical class 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- FDDDEECHVMSUSB-UHFFFAOYSA-N sulfanilamide Chemical compound NC1=CC=C(S(N)(=O)=O)C=C1 FDDDEECHVMSUSB-UHFFFAOYSA-N 0.000 description 2
- 229940124530 sulfonamide Drugs 0.000 description 2
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000003918 potentiometric titration Methods 0.000 description 1
- 235000014438 salad dressings Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Detergent Compositions (AREA)
Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は酸洗浄剤組成物、特にビール工場やジユース等の飲料工場、サラダドレッシング等の液状食品工場等の各種食品製造設備の洗浄に用いられる酸洗浄剤組成物に係り、詳細には、酸としてスルフアミン酸を用い、水溶液中での経時による加水分解を抑制してスルフアミン酸を安定（高濃度）に保持する食品製造設備の洗浄に用いられる酸洗浄剤組成物に関する。
【０００２】
【従来の技術】
ビール工場のビール醸造タンクやビール樽、配管、コンテナ、クレイト等、飲料工場や液状食品工場の製造機器、製造タンク、配管、コンテナ、クレイト等、各種食品製造設備は機械式自動洗浄、とりわけ定置洗浄（ＣＩＰ）や噴射洗浄により自動設備で洗浄される。
【０００３】
この自動設備による洗浄に際して、従来、液状の酸洗浄剤が使用されている。酸洗浄剤としては硝酸、リン酸、あるいは有機酸が広く利用されている。しかし、硝酸は強酸であるため、取り扱い上危険性が高い。さらに、リン酸は環境への影響が大きく、使用しにくい。また、有機酸は洗浄効果が低く、多量に使用しなければならず、価格も高くなる。
【０００４】
【発明が解決すべき課題】
そこで、近年、酸としてスルフアミン酸の使用が試みられているが、これは水溶液とした場合、加水分解を受けて酸性硫安（硫酸水素アンモニウム）になってしまい、安定性の高い水溶液が得られなかった。すなわち、スルフアミン酸は加水分解によって濃度が低下し、洗浄効果が低下するという問題があった。
【０００５】
そこで、本発明の目的は水溶液中での経時による加水分解を抑制してスルフアミン酸を安定化させ、上述の公知技術に存する欠点を改良した、特に、食品製造設備の洗浄に用いられる酸洗浄剤組成物を提供することにある。
【０００６】
【課題を解決するための手段】
上述の目的を達成するため、本発明によれば、スルフアミン酸と、尿素とを含む酸洗浄剤組成物において、スルフアミン酸に対する尿素の含有量をスルフアミン酸量の０．５倍モル乃至４倍モルとしてなり、これにより水溶液中での経時による加水分解を抑制してスルフアミン酸を安定化させることを特徴とする。
【０００７】
【発明の実施の態様】
以下、本発明を具体的に詳述する。
【０００８】
一般に、食品製造業界では、各種食品製造設備の洗浄に際して、液体洗浄剤を用いた自動化洗浄が行われている。この自動化洗浄に用いられる洗浄剤としては、硝酸、リン酸、有機酸、スルフアミン酸等の酸洗浄剤が挙げられる。
【０００９】
しかし、上述のように硝酸は強酸であって、取り扱いが難しく、また、リン酸や有機酸は環境への影響が心配される。さらに、スルフアミン酸は水溶液中で経時的に加水分解され、洗浄効果が低下してしまう。本発明はこのようなスルフアミン酸の欠点を改良した以下の特徴を有する酸洗浄剤組成物である。
【００１０】
すなわち、本発明にかかる酸洗浄剤組成物はスルフアミンと尿素を含んで構成される。そしてこれらスルフアミン酸と尿素の含有比率は尿素の含有量がスルフアミン酸量の０．５倍モル乃至４倍モルであり、好ましくは１．５倍モル乃至３．０倍モルである。尿素量が０．５倍モル以下では、スルフアミン酸は加水分解が抑制されず、また、４倍モル以上では、加水分解抑制効果についても、水に対する溶解効果についても、それ以上の向上が見られない。
【００１１】
本発明では、上述のスルフアミン酸および尿素を任意濃度の水溶液とし、例えばスルフアミン酸濃度を３％あるいは６％とし、これに尿素を所望量添加混合して、スルフアミン酸洗浄液を得る。
【００１２】
上述の本発明はスルフアミン酸の水に対する溶解性を向上し、例えばスルフアミン酸濃度を３０％位までの高濃度水溶液にすることが可能であり、かつ加水分解抑制効果も生じ、当初のスルフアミン酸濃度を例えば３％あるいは６％濃度に定めた場合、これら濃度をそのまま維持し、スルフアミン酸濃度の経時変化を減少させる。
【００１３】
以下、本発明を実施例によりさらに詳述するが、本発明はこれら実施例によって制限されるものではない。
【００１４】
〔実施例１〕
スルフアミン酸濃度３％および６％の水溶液を調製し、これら水溶液に尿素を無添加乃至４．０倍モル添加し、それぞれ７０℃の温度で１０時間保持した後、スルフアミンの残存率（％）を下記の要領で測定して加水分解抑制効果を評価した。結果を表１に示す。
【００１５】
スルフアミン酸の残存率の測定
７０℃で１０時間保持した後、各試料中のスルフアミン酸濃度を電位差滴定により測定した。
測定液：試料５．００ ｇ＋イオン交換水８０ｍｌ＋（１＋５）Ｈ２ＳＯ４ １０ｍｌ
滴定液：０．５Ｎ−ＮａＮＯ２
電極 ：銀検出電極＋参照電極
【００１６】
【表１】
表１から、スルフアミン酸濃度３％および６％の水溶液のいずれも尿素を０．５乃至４．０倍モル添加することにより、特に、尿素を１．５〜３．０倍モル添加することにより、スルフアミン酸濃度を維持し、この結果からスルフアミン酸の加水分解抑制効果があることがわかる。
【００１８】
〔実施例２〕
スルフアミン酸濃度３％および６％の水溶液を調製し、これら水溶液に尿素を無添加乃至３．０倍モル添加し、それぞれ７０℃の温度で４５時間保持した後、スルフアミン酸の残存率（％）を実施例１と同様にして測定して加水分解抑制効果を評価した。結果を表２に示す。
【００１９】
【表２】
表２から、スルフアミン酸濃度３％および６％の水溶液のいずれも尿素を０．５〜４．０倍モル添加することにより、特に尿素を１．５〜３．０倍モル添加することにより、スルフアミン酸濃度を維持し、この結果からスルフアミン酸の加水分解抑制効果があることがわかる。
【００２１】
【発明の効果】
以上のとおり、本発明は尿素をスルフアミン酸量の０．５〜４倍モル添加することにより、水溶液中での経時による加水分解を抑制してスルフアミン酸を安定に保持し、かつステンレスの腐食をも防止し、食品製造設備の洗浄に最適な酸洗浄組成物である。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an acid detergent composition, particularly to an acid detergent composition used for cleaning various food production facilities such as beverage factories such as beer factories and jyouses, and liquid food factories such as salad dressings. The present invention relates to an acid detergent composition for use in washing food manufacturing equipment that uses sulfamic acid as a catalyst, suppresses hydrolysis over time in an aqueous solution, and maintains sulfamic acid in a stable (high concentration) state.
[0002]
[Prior art]
Beverage brewery tanks, beer barrels, piping, containers, clay, etc. in beer factories, manufacturing equipment in beverage factories and liquid food factories, manufacturing tanks, piping, containers, crates, etc., and various food production facilities are mechanically automatic cleaning, especially stationary cleaning. It is cleaned by automatic equipment by (CIP) or spray cleaning.
[0003]
Conventionally, a liquid acid cleaning agent has been used for cleaning with this automatic equipment. Nitric acid, phosphoric acid, or organic acids are widely used as acid cleaning agents. However, since nitric acid is a strong acid, it is dangerous to handle. Further, phosphoric acid has a large environmental impact and is difficult to use. In addition, organic acids have a low cleaning effect, must be used in large amounts, and are expensive.
[0004]
[Problems to be solved by the invention]
In recent years, attempts have been made to use sulfamic acid as an acid. However, when this is used as an aqueous solution, it is hydrolyzed into acidic ammonium sulfate (ammonium hydrogen sulfate), and a highly stable aqueous solution cannot be obtained. Was. That is, there is a problem that the concentration of sulfamic acid is reduced by hydrolysis, and the washing effect is reduced.
[0005]
Therefore, an object of the present invention is to suppress hydrolysis over time in an aqueous solution to stabilize sulfamic acid, and to improve the above-mentioned disadvantages of the known art, particularly, an acid detergent used for cleaning food production equipment. It is to provide a composition.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, in an acid detergent composition containing sulfamic acid and urea, the content of urea relative to sulfamic acid is 0.5 to 4 times the molar amount of the sulfamic acid. This suppresses hydrolysis with time in an aqueous solution to stabilize the sulfamic acid.
[0007]
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Hereinafter, the present invention will be described in detail.
[0008]
Generally, in the food manufacturing industry, when cleaning various food manufacturing facilities, automated cleaning using a liquid detergent is performed. Examples of the cleaning agent used for the automatic cleaning include an acid cleaning agent such as nitric acid, phosphoric acid, organic acid, and sulfamic acid.
[0009]
However, as described above, nitric acid is a strong acid and is difficult to handle, and phosphoric acid and organic acids are feared of affecting the environment. Further, sulfamic acid is hydrolyzed with time in an aqueous solution, and the washing effect is reduced. The present invention is an acid detergent composition having the following characteristics, which has improved the disadvantages of such sulfamic acids.
[0010]
That is, the acid cleaning composition according to the present invention includes sulfamine and urea. The content ratio of the sulfamic acid to urea is such that the content of urea is 0.5 to 4 times, preferably 1.5 to 3.0 times the amount of the sulfamic acid. When the amount of urea is 0.5 mol or less, the hydrolysis of sulfamic acid is not suppressed, and when the amount of urea is 4 mol or more, further improvement is observed in both the hydrolysis inhibiting effect and the dissolving effect in water. Absent.
[0011]
In the present invention, the above-mentioned sulfamic acid and urea are made into an aqueous solution having an arbitrary concentration, for example, the sulfamic acid concentration is set to 3% or 6%, and a desired amount of urea is added thereto and mixed to obtain a sulfamic acid cleaning solution.
[0012]
The present invention described above improves the solubility of sulfamic acid in water, for example, it can be used as a high-concentration aqueous solution having a sulfamic acid concentration of up to about 30%, and also has an effect of inhibiting hydrolysis. Is set to, for example, a 3% or 6% concentration, these concentrations are maintained as they are, and the change with time of the sulfamic acid concentration is reduced.
[0013]
Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
[0014]
[Example 1]
Aqueous solutions having sulfamic acid concentrations of 3% and 6% were prepared, and urea was not added to the aqueous solution in an amount of 4.0 to 4.0, and after maintaining at 70 ° C. for 10 hours, the residual ratio (%) of sulfamine was determined. The hydrolysis inhibition effect was evaluated by measuring in the following manner. Table 1 shows the results.
[0015]
Measurement of residual ratio of sulfamic acid After maintaining at 70 ° C. for 10 hours, the concentration of sulfamic acid in each sample was measured by potentiometric titration.
Measurement liquid: sample 5.00 g + ion exchange water 80 ml + (1 + 5) H 2 SO 4 10 ml
Titrant: 0.5N-NaNO 2
Electrode: silver detection electrode + reference electrode
[Table 1]
From Table 1, it can be seen that urea is added in an amount of 0.5 to 4.0 times by mole, and in particular, by adding 1.5 to 3.0 times by mole of urea in both the aqueous solutions having a sulfamic acid concentration of 3% and 6%. , The concentration of sulfamic acid was maintained, and from this result, it was found that there was an effect of inhibiting hydrolysis of sulfamic acid.
[0018]
[Example 2]
Aqueous solutions having a sulfamic acid concentration of 3% and 6% were prepared, and urea was not added to the aqueous solution in an amount of 3.0 to 3.0 times, and each was maintained at 70 ° C. for 45 hours. Then, the residual ratio of sulfamic acid (%) Was measured in the same manner as in Example 1 to evaluate the hydrolysis inhibiting effect. Table 2 shows the results.
[0019]
[Table 2]
From Table 2, it can be seen that both of the aqueous solutions having a sulfamic acid concentration of 3% and 6% were prepared by adding 0.5 to 4.0 times mol of urea, particularly by adding 1.5 to 3.0 times mol of urea. The sulfamic acid concentration was maintained, and this result indicates that the sulfamic acid had an effect of inhibiting hydrolysis.
[0021]
【The invention's effect】
As described above, the present invention suppresses the hydrolysis with time in an aqueous solution by adding urea in an amount of 0.5 to 4 times the mole of the sulfamic acid, stably retains the sulfamic acid, and suppresses corrosion of stainless steel. It is an acid cleaning composition that is also suitable for cleaning food manufacturing equipment.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003008428A JP2004217827A (en) | 2003-01-16 | 2003-01-16 | Acid cleaning agent composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003008428A JP2004217827A (en) | 2003-01-16 | 2003-01-16 | Acid cleaning agent composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2004217827A true JP2004217827A (en) | 2004-08-05 |
Family
ID=32898224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003008428A Pending JP2004217827A (en) | 2003-01-16 | 2003-01-16 | Acid cleaning agent composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2004217827A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5346302A (en) * | 1976-10-08 | 1978-04-25 | Sanpooru Kk | Liquid acid detergent |
| JPH0967599A (en) * | 1995-02-01 | 1997-03-11 | Ecolab Inc | Acidic solid detergent and its preparation |
-
2003
- 2003-01-16 JP JP2003008428A patent/JP2004217827A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5346302A (en) * | 1976-10-08 | 1978-04-25 | Sanpooru Kk | Liquid acid detergent |
| JPH0967599A (en) * | 1995-02-01 | 1997-03-11 | Ecolab Inc | Acidic solid detergent and its preparation |
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