CN114717057B - Cleaning liquid and cleaning method for cleaning collagen adding system - Google Patents
Cleaning liquid and cleaning method for cleaning collagen adding system Download PDFInfo
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- CN114717057B CN114717057B CN202210270022.4A CN202210270022A CN114717057B CN 114717057 B CN114717057 B CN 114717057B CN 202210270022 A CN202210270022 A CN 202210270022A CN 114717057 B CN114717057 B CN 114717057B
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- 238000004140 cleaning Methods 0.000 title claims abstract description 130
- 102000008186 Collagen Human genes 0.000 title claims abstract description 53
- 108010035532 Collagen Proteins 0.000 title claims abstract description 53
- 229920001436 collagen Polymers 0.000 title claims abstract description 53
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 19
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 39
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 21
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 13
- 230000002572 peristaltic effect Effects 0.000 claims abstract description 11
- 238000012546 transfer Methods 0.000 claims abstract description 11
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 229910052708 sodium Inorganic materials 0.000 claims description 11
- 239000011734 sodium Substances 0.000 claims description 11
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 10
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 17
- 239000007787 solid Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract description 3
- 239000000084 colloidal system Substances 0.000 abstract description 3
- 238000006731 degradation reaction Methods 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- 208000028659 discharge Diseases 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- -1 tissue engineering Substances 0.000 description 5
- 239000012459 cleaning agent Substances 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940077388 benzenesulfonate Drugs 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000020939 nutritional additive Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001184 polypeptide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 102000004196 processed proteins & peptides Human genes 0.000 description 1
- 108090000765 processed proteins & peptides Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
- C11D1/143—Sulfonic acid esters
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/34—Derivatives of acids of phosphorus
- C11D1/345—Phosphates or phosphites
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2082—Polycarboxylic acids-salts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2220/00—Type of materials or objects being removed
- B08B2220/01—Adhesive materials
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/40—Specific cleaning or washing processes
- C11D2111/44—Multi-step processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Mechanical Engineering (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a cleaning solution and a cleaning method for cleaning a collagen adding system, wherein the cleaning solution comprises the following components: oxalic acid 40-60g/L and anionic surfactant 100-500mg/L; the cleaning method comprises the following steps: s1, adding the cleaning liquid into a collagen adding system; s2, starting a liquid transfer pump to enable the cleaning liquid to circularly flow in the collagen adding system; and S3, continuously adding hydrogen peroxide solution into the cleaning solution by using a peristaltic pump, and circularly cleaning a collagen adding system. The cleaning liquid and the cleaning method can solve the problem of poor cleaning effect of the traditional cleaning liquid and the traditional cleaning method, thereby achieving the aims of aiming at the problems that the solid or colloid in the collagen adding system has good cleaning effect after long-time use, the minimum cleaning frequency is 1 time per quarter, the service life of equipment is effectively prolonged, the use cost is reduced, difficult degradation substances are not produced, and the subsequent wastewater discharge treatment is easy.
Description
Technical Field
The invention relates to the technical field of polymer chemical engineering, in particular to a cleaning liquid and a cleaning method for cleaning a collagen adding system.
Background
Collagen is a biological macromolecule, is a functional protein with the greatest content and the widest distribution in animals, and is widely applied to various fields such as food, medicine, tissue engineering, cosmetics, copper foil additives and the like. Collagen is a polypeptide chain molecular structure, the molecular weight is between thousands and hundreds of thousands, the distribution is wider, the three-level supercoiled structure is destroyed, the biological activity is basically lost, and the collagen is easy to be dissolved in water. Collagen contains various amino acids and amphoteric active groups using the molecules, and is mostly used as functional or nutritional additives. Meanwhile, as the functionality is continuously developed, the method is widely applied in other aspects. There are also problems and effects during use. Because of the characteristics of collagen denaturation and polymerization, flocculent or even sticky solids are easy to be formed and adsorbed on the surface of a pipeline, the pipeline is difficult to clean by a conventional method, and the pipeline is required to be cleaned by assisting a corresponding cleaning agent, so that the cost is not excessively increased, and the characteristics of no residue after cleaning and the like are also met. At present, cleaning agents which are specially used for the products and have the advantages of environmental protection, low cost, high efficiency and the like are not discovered in the market temporarily. Therefore, it is necessary to invent a novel cleaning agent for cleaning this class or the like.
Disclosure of Invention
The invention provides a cleaning solution and a cleaning method for cleaning a collagen adding system, which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
the cleaning solution for cleaning the collagen addition system is characterized by comprising the following components: oxalic acid 40-60g/L and anionic surfactant 100-500mg/L.
Further, the anionic surfactant is one or more of sodium alkylbenzenesulfonate, sodium fatty alcohol sulfate and sodium alkyl phosphate monoester.
Further, the solvent of the cleaning liquid is pure water, the conductivity of the pure water is less than 10 mu s/cm, and the pH value of the pure water is 5-7.
Further, the preparation method of the cleaning liquid comprises the following steps: oxalic acid and an anionic surfactant are sequentially added into pure water and stirred uniformly.
Further, the conductivity of the pure water is less than 5 mu s/cm, and the pH value of the pure water is 5-6.
A cleaning method for cleaning a collagen addition system by using any one of the above cleaning solutions, comprising the steps of:
s1, adding the cleaning liquid into a collagen adding system;
s2, starting a liquid transfer pump to enable the cleaning liquid to circularly flow in the collagen adding system;
and S3, continuously adding hydrogen peroxide solution into the cleaning solution by using a peristaltic pump, and circularly cleaning the collagen adding system by using the cleaning solution.
Furthermore, the flow rate of the cleaning liquid in the step S2 is more than or equal to 1.5m/S, so that sufficient mechanical force is ensured to be matched with the cleaning liquid.
Furthermore, the concentration of the hydrogen peroxide solution in the step S3 is more than or equal to 50%, the adding rate of the hydrogen peroxide solution is 30-50mL/min, the oxidation catalytic performance of the hydrogen peroxide can be exerted to the maximum extent, the loss caused by self-decomposition and volatilization is reduced, and meanwhile, the damage to the anionic surfactant due to local excessive amount is reduced.
Further, the cycle cleaning time in the step S3 is 30min.
The invention has the beneficial effects that: the cleaning liquid and the cleaning method can solve the problem of poor cleaning effect of the traditional cleaning liquid and the traditional cleaning method, thereby achieving the aims of aiming at the problems that the solid or colloid in the collagen adding system has good cleaning effect after long-time use, the minimum cleaning frequency is 1 time per quarter, effectively prolonging the service life of equipment, reducing the use cost, producing no degradation-resistant substances and being easy for the subsequent treatment of discharged wastewater.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a diagram showing interactions between an anionic surfactant and hydrogen peroxide in a cleaning solution and a cleaning method for cleaning a collagen addition system according to an embodiment of the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
In order to facilitate understanding of the above technical solutions of the present invention, the following describes the above technical solutions of the present invention in detail by a specific usage manner.
Example 1
Sequentially adding 4000g of oxalic acid and 50g of sodium alkylbenzenesulfonate into 100L of pure water, stirring uniformly to prepare a cleaning solution, adding the cleaning solution into a collagen adding system, starting a transfer pump to enable the cleaning solution to circularly flow in the collagen adding system at a speed of more than or equal to 1.5m/s, continuously adding 55% hydrogen peroxide solution into the cleaning solution at a speed of 30mL/min by using a peristaltic pump, circularly cleaning the collagen adding system for 30min, and testing the cleaning effect.
Example 2
Adding 6000g of oxalic acid and 50g of sodium alkyl benzene sulfonate into 100L of pure water in sequence and stirring uniformly to prepare a cleaning solution, adding the cleaning solution into a collagen adding system, starting a transfer pump to enable the cleaning solution to circularly flow in the collagen adding system at a speed of more than or equal to 1.5m/s, continuously adding 55% hydrogen peroxide solution into the cleaning solution at a speed of 50mL/min by using a peristaltic pump, circularly cleaning the collagen adding system for 30min, and testing the cleaning effect.
Example 3
Sequentially adding 4000g of oxalic acid and 10g of fatty alcohol sodium sulfate into 100L of pure water, stirring uniformly to prepare a cleaning solution, adding the cleaning solution into a collagen adding system, starting a transfer pump to enable the cleaning solution to circularly flow in the collagen adding system at a speed of more than or equal to 1.5m/s, continuously adding 55% hydrogen peroxide solution into the cleaning solution at a speed of 50mL/min by using a peristaltic pump, circularly cleaning the collagen adding system for 30min, and testing the cleaning effect.
Example 4
Adding 6000g of oxalic acid and 10g of fatty alcohol sodium sulfate into 100L of pure water in sequence and stirring uniformly to prepare a cleaning solution, adding the cleaning solution into a collagen adding system, starting a transfer pump to enable the cleaning solution to circularly flow in the collagen adding system at a speed of more than or equal to 1.5m/s, continuously adding 55% hydrogen peroxide solution into the cleaning solution at a speed of 30mL/min by using a peristaltic pump, circularly cleaning the collagen adding system for 30min, and testing the cleaning effect.
Example 5
Sequentially adding 4000g of oxalic acid and 10g of fatty alcohol sodium sulfate into 100L of pure water, stirring uniformly to prepare a cleaning solution, adding the cleaning solution into a collagen adding system, starting a transfer pump to enable the cleaning solution to circularly flow in the collagen adding system at a speed of more than or equal to 1.5m/s, continuously adding 55% hydrogen peroxide solution into the cleaning solution at a speed of 30mL/min by using a peristaltic pump, circularly cleaning the collagen adding system for 30min, and testing the cleaning effect.
Example 6
Adding 6000g of oxalic acid and 10g of sodium alkyl phosphate monoester into 100L of pure water in sequence and stirring uniformly to prepare a cleaning solution, adding the cleaning solution into a collagen adding system, starting a transfer pump to enable the cleaning solution to circularly flow in the collagen adding system at a speed of more than or equal to 1.5m/s, continuously adding 55% hydrogen peroxide solution into the cleaning solution at a speed of 50mL/min by using a peristaltic pump, circularly cleaning the collagen adding system for 30min, and testing the cleaning effect.
Example 7
Sequentially adding 4000g of oxalic acid and 50g of sodium alkyl phosphate monoester into 100L of pure water, stirring uniformly to prepare a cleaning solution, adding the cleaning solution into a collagen adding system, starting a transfer pump to enable the cleaning solution to circularly flow in the collagen adding system at a speed of more than or equal to 1.5m/s, continuously adding 55% hydrogen peroxide solution into the cleaning solution at a speed of 50mL/min by using a peristaltic pump, circularly cleaning the collagen adding system for 30min, and testing the cleaning effect.
Example 8
Adding 6000g of oxalic acid and 50g of sodium alkyl phosphate monoester into 100L of pure water in sequence and stirring uniformly to prepare a cleaning solution, adding the cleaning solution into a collagen adding system, starting a transfer pump to enable the cleaning solution to circularly flow in the collagen adding system at a speed of more than or equal to 1.5m/s, continuously adding 55% hydrogen peroxide solution into the cleaning solution at a speed of 30mL/min by using a peristaltic pump, circularly cleaning the collagen adding system for 30min, and testing the cleaning effect.
The interaction of the anionic surfactant with hydrogen peroxide is shown in figure 1. The amounts of the components used in examples 1-8 are shown in Table 1:
TABLE 1
In the collagen addition systems of examples 1-8 after washing, 5 positions were randomly selected, and the washing effect was counted, and the results are shown in table 2:
TABLE 2
As shown in table 2, most of the cleaning effects of the positions of the embodiments are good, and the slight incomplete cleaning state of the individual positions of the embodiments 1, 5 and 6 may be caused by a certain difference in the adhesion amount of the collagen solid or colloidal denatured product in the addition system, and the combined effect of the chemical force and the mechanical force of cleaning at the different positions of the addition system may be uneven, which ultimately affects the inability of thoroughly cleaning the individual positions. This type of problem can be solved by appropriately extending the cleaning time or appropriately increasing the amounts of the components in the invention.
In summary, by means of the technical scheme, the problem of poor cleaning effect of the traditional cleaning liquid and the traditional cleaning method can be solved, so that the purposes of good solid or colloid cleaning effect, minimum cleaning frequency of 1 time per quarter, effective prolonging of the service life of equipment, reduction of the use cost, no degradation-resistant substances generation and easiness in subsequent wastewater discharge treatment are achieved for the collagen adding system after long-time use.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. A cleaning method for cleaning a collagen addition system by using a cleaning solution, characterized in that the cleaning solution for cleaning the collagen addition system comprises the following components: 40-60g/L oxalic acid and 100-500mg/L anionic surfactant, wherein the anionic surfactant is one or more of sodium alkylbenzenesulfonate, sodium fatty alcohol sulfate and sodium alkyl phosphate monoester, and the cleaning method comprises the following steps:
s1, adding the cleaning liquid into a collagen adding system;
s2, starting a liquid transfer pump to enable the cleaning liquid to circularly flow in the collagen adding system;
s3, continuously adding hydrogen peroxide solution into the cleaning solution by using a peristaltic pump, and circularly cleaning a collagen adding system by using the cleaning solution;
the flow rate of the cleaning liquid in the step S2 is more than or equal to 1.5m/S;
the concentration of the hydrogen peroxide solution in the step S3 is more than or equal to 50%, and the adding rate of the hydrogen peroxide solution is 30-50mL/min;
and (3) the cycle cleaning time in the step S3 is 30min.
2. The cleaning method according to claim 1, wherein the solvent of the cleaning liquid is pure water, the conductivity of the pure water is < 10 μs/cm, and the pH of the pure water is 5 to 7.
3. The cleaning method according to claim 2, wherein the cleaning liquid is formulated by: oxalic acid and anionic surfactant are added into pure water in turn and stirred uniformly.
4. The method according to claim 2, wherein the conductivity of the pure water is < 5 μs/cm and the pH of the pure water is 5-6.
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| CN202210270022.4A CN114717057B (en) | 2022-03-18 | 2022-03-18 | Cleaning liquid and cleaning method for cleaning collagen adding system |
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| CN114717057B true CN114717057B (en) | 2023-12-12 |
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| CN113862682A (en) * | 2021-08-18 | 2021-12-31 | 广州环投环境服务有限公司 | Cleaning agent, preparation method and cleaning method using cleaning agent |
| CN113736269A (en) * | 2021-09-24 | 2021-12-03 | 江苏集萃新型药物制剂技术研究所有限公司 | Collagen composite material and preparation method and application thereof |
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