Cleaning agent for sediments of speed regulating system as well as preparation method and use method of cleaning agent

Abstract

The invention discloses a cleaning agent for sediments of a speed regulating system and a preparation method and a use method of the cleaning agent, and belongs to the field of industrial cleaning. The cleaning agent provided by the invention comprises limonene, phosphate, a nonionic surfactant and a tea extract, according to the mass percent, the limonene accounts for 65%-70%, the phosphate accounts for 10%-15%, the non-ionic surface active agent accounts for 10%-20%, and the tea leaf extract accounts for 3%-8%. The cleaning agent provided by the invention has an excellent cleaning effect, can effectively dissolve oil sludge and a paint film, can effectively protect a metal surface, has extremely low corrosion to the cleaning agent, and also has an environment-friendly characteristic.

Description

Technical Field

[0001] The invention relates to the technical field of industrial cleaning, and in particular to a cleaning agent for deposits in a speed regulating system and a preparation method and a use method thereof. Background Art

[0002] As a high-performance hydraulic oil, phosphate ester fire-resistant oil plays a vital role in the modern industrial field, especially in the high-precision and high-demand generator speed control system. This fire-resistant oil has excellent thermal stability, oxidation stability and good lubrication performance, which enables it to maintain a stable working state under extreme conditions of high temperature, high pressure and frequent operation.

[0003] However, with the long-term use of phosphate ester fire-resistant oil in speed control systems, some problems have gradually emerged. Due to the oxidation and decomposition of the oil, as well as the catalytic effect of impurities such as metal ions and water that may exist in the system, phosphate ester fire-resistant oil will gradually form sludge and paint films that are difficult to remove. These deposits will not only reduce the efficiency of the hydraulic system and increase energy consumption, but may also cause wear and tear on the precision components inside the system, and even cause system failures.

[0004] At present, the cleaning of the generator set speed control system mainly relies on physical flushing, using flushing oil to flush the pipeline at a large flow rate, and at the same time heating the flushing oil during the flushing process. On the one hand, the sludge and paint film in the pipeline are taken out by the large flow and high pressure flushing oil, and on the other hand, the solubility of the sludge and paint film is increased, so that the pollutants in the system are dissolved in the flushing oil, and then the pipeline system is cleaned. However, it is usually difficult to remove all pollutants by physical flushing alone. There will still be a considerable amount of sludge and paint film remaining in the corners of the system pipeline or in the temperature-changing parts such as the oil cooler, resulting in unsatisfactory flushing effect, causing new oil contamination, and reducing the service life of the oil product.

[0005] Therefore, how to effectively remove the sludge and paint film in phosphate ester fire-resistant oil without damaging equipment materials and polluting the environment has become an urgent problem to be solved in the field of speed control system maintenance. Solving this problem will not only help improve the operating efficiency and reliability of the speed control system, but also reduce environmental pollution and promote the sustainable development of industrial production. Summary of the invention

[0006] Aiming at the difficulty that deposits such as sludge in the current speed regulating system are difficult to be completely removed during flushing, the present invention provides a cleaning agent for deposits in the speed regulating system and a preparation method and a use method thereof.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] The invention provides a cleaning agent for deposits in a speed regulating system, comprising limonene, phosphate, a nonionic surfactant and tea extract.

[0009] Calculated by mass percentage, the limonene accounts for 65% to 70%, the phosphate accounts for 10% to 15%, the nonionic surfactant accounts for 10% to 20% and the tea extract accounts for 3% to 8%.

[0010] The nonionic surfactant includes one of alkyl polyglycoside, nonylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.

[0011] The alkyl polyglycoside is one or more of APG0810, APG0814 and APG1214.

[0012] The polymerization degree of the alkyl polyglycoside is between 1.2 and 1.8.

[0013] The phosphate includes one or more of trisodium phosphate, potassium pyrophosphate, and trisodium metaphosphate.

[0014] The present invention also provides a method for preparing the cleaning agent for the deposits in the speed regulating system, comprising mixing limonene and a nonionic surfactant evenly to obtain a mixture; adding phosphate to the mixture and mixing evenly, and then adding tea extract and mixing evenly to obtain the cleaning agent.

[0015] The present invention also provides a method for using the above-mentioned cleaning agent for deposits in a speed regulation system, comprising:

[0016] Add the cleaning agent according to the amount of fire-resistant oil in the speed control system;

[0017] After the cleaning agent and fire-resistant oil are evenly mixed, the oil temperature of the fire-resistant oil is raised to the preset temperature, and the speed control system is circulated and flushed. After flushing for 24 to 36 hours, the fire-resistant oil is discharged.

[0018] The volume ratio of the fire-resistant oil to the cleaning agent is 10:1-1.5.

[0019] The oil temperature is between 60 and 65°C.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The cleaning agent provided by the present invention has an excellent cleaning effect, can effectively dissolve sludge and paint film, effectively protect the metal surface, has extremely low corrosiveness to system materials, and also has environmental protection characteristics. The limonene added in the cleaning agent is an organic solvent, which has a strong solubility for the sludge and paint film in the phosphate fire-resistant oil system, and at the same time, it exhibits a high degree of environmental protection due to its low toxicity and biodegradability; in order to enhance the protective effect of the cleaning agent on the metal surface, phosphate is added as a corrosion inhibitor, which can effectively prevent chemical corrosion that may occur during the cleaning process; the cleaning agent also adds an environmentally friendly non-ionic surfactant to strengthen the emulsification performance of the cleaning agent, and the surfactant used can significantly improve the dispersion and cleaning effect of sludge and paint film; tea extract is also added, and this natural ingredient is rich in antioxidants and corrosion inhibitors, which not only further enhances the protective ability of the cleaning agent to metals, but also enhances its overall environmental protection attributes.

[0022] The cleaning agent prepared by the present invention has shown a highly efficient ability to remove sludge and paint film in phosphate ester oil in laboratory tests, with a removal rate of sludge and paint film as high as 98%. After the cleaning agent is used for flushing in a speed control system, the MPC value of the new fire-resistant oil injected into the speed control system circulates, and the sludge precipitation index changes from "yes" to "no". DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0024] The present invention aims to provide an environmentally friendly and highly effective cleaning agent formula, which is particularly suitable for cleaning a phosphate ester fire-resistant fuel system containing oil sludge and paint film, while protecting the internal materials of the system from corrosion.

[0025] A cleaning agent for cleaning comprises limonene, phosphate, nonionic surfactant and tea extract; in terms of mass percentage, the limonene is 65% to 70%, the phosphate is 10% to 15%, the nonionic surfactant is 10% to 20% and the tea extract is 3% to 8%.

[0026] The cleaning agent provided by the present invention comprises limonene as the main organic solvent. Limonene is derived from natural citrus and has excellent solubility, and can effectively dissolve sludge and paint film. At the same time, the low toxicity and biodegradability of limonene ensure environmental protection. Phosphate, as a corrosion inhibitor, can form a protective layer covering the metal surface, effectively preventing chemical corrosion during the cleaning process. The non-ionic surfactant is an environmentally friendly non-ionic surfactant, such as an alkyl polyglycoside, which enhances the emulsification ability of the cleaning agent and makes the sludge and paint film easier to be cleaned by an oil-based solution. Tea extract contains natural antioxidants and corrosion inhibitors, which can further improve the protective effect of the formula on metals and enhance the environmental protection properties of the cleaning agent.

[0027] In some embodiments, the nonionic surfactant includes one or more of alkyl polyglycoside, nonylphenol polyoxyethylene ether, and fatty alcohol polyoxyethylene ether.

[0028] It should be noted that these non-ionic surfactants have strong emulsifying properties, can effectively remove sludge and paint film, and have good environmental protection.

[0029] In some embodiments, the degree of polymerization of the alkyl polyglycoside is between 1.2 and 1.8.

[0030] It should be noted that the alkyl polyglycoside product with a degree of polymerization between 1.2 and 1.8 has excellent surface activity and can effectively reduce the surface tension of the liquid, making it easier for dirt to separate from the surface of the object to be cleaned and suspend in the cleaning agent.

[0031] In some embodiments, the alkyl polyglycoside is one or more of APG0810, APG0814 and APG1214.

[0032] It should be noted that alkyl polysaccharides are synthesized from glucose and fatty alcohols, so they cause less pollution to the environment. These types of alkyl polyglycosides have more excellent decontamination ability.

[0033] In some embodiments, the phosphate includes one or more of trisodium phosphate, potassium pyrophosphate, and trisodium metaphosphate.

[0034] The preparation method of the cleaning agent for the deposits of the speed regulating system of the present invention comprises:

[0035] The limonene and the nonionic surfactant are mixed uniformly to obtain a mixture; the phosphate is added to the mixture and stirred continuously to ensure sufficient mixing; finally, the tea extract is added and stirred continuously until the mixture is completely uniform.

[0036] The preparation method of the cleaning agent of the present invention firstly mixes limonene and a nonionic surfactant evenly, and then adds phosphate, which can improve the cleaning effect and prevent redeposition; then tea extract is added to further enhance the protective ability of the cleaning agent for metals and enhance its overall environmental performance. The preparation method is simple and easy to implement, and the product performance is excellent.

[0037] The cleaning agent prepared by the above preparation method is used to remove deposits in the speed control system, and the use method includes the following steps:

[0038] The amount of cleaning agent added is determined according to the amount of fire-resistant oil in the speed control system. The volume ratio of fire-resistant oil to cleaning agent is 10:1-1.5.

[0039] Use an oil filter to slowly introduce the cleaning agent into the fire-resistant oil tank, and keep the speed control system oil pump open for 5 hours to ensure that the cleaning agent and fire-resistant oil are evenly mixed;

[0040] After the cleaning agent and fire-resistant oil are evenly mixed, turn off the speed control system cooler and raise the oil temperature of the fire-resistant oil to 60-65℃;

[0041] Maintain the oil temperature and start the oil pump of the speed control system to circulate and flush the speed control system;

[0042] During flushing, tap the bends in the system oil circuit to promote the removal of sludge from the pipeline;

[0043] After flushing for 24 to 36 hours, quickly drain the fire-resistant oil to ensure that the sludge that is well dissolved at high temperature can be discharged.

[0044] After the cleaning agent prepared by the present invention is fully mixed with fire-resistant oil, it is used to clean the speed regulating system, which can effectively dissolve the sludge and paint film in the speed regulating system, has excellent cleaning effect, and provides guarantee for the subsequent normal use of the speed regulating system. During use, the amount of the cleaning agent added and the oil temperature of the flushing process are limited, which can further improve the cleaning effect and efficiency of the cleaning agent.

[0045] In the following examples, unless otherwise specified, all materials used can be obtained through common channels; and the test methods adopted are conventional methods in the art.

[0046] Example 1

[0047] In terms of mass percentage, 3250 g (65%) of limonene and 750 g (15%) of APG0810 alkyl polyglycoside (degree of polymerization: 1.2) were mixed uniformly to obtain a mixture; 750 g (15%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 250 g (5%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0048] Take an object with sludge and paint film, weigh it as m1, put it into the mixture of the prepared cleaning agent and fire-resistant oil, and circulate it for 24 hours. After the rinsing is completed, weigh it as m2. Calculate the sludge and paint film removal rate by taking the before and after weight of the object with sludge and paint film.

[0049] Through testing, the sludge and paint film removal rate of this embodiment reaches 96%.

[0050] Example 2

[0051] In terms of mass percentage, 3250 g (65%) of limonene and 500 g (10%) of APG0810 alkyl polyglycoside (degree of polymerization: 1.2) were mixed uniformly to obtain a mixture; 850 g (17%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 400 g (8%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0052] Through testing, the sludge and paint film removal rate of this embodiment reaches 94%.

[0053] Example 3

[0054] In terms of mass percentage, 3250 g (65%) of limonene and 1000 g (20%) of APG0810 alkyl polyglycoside (degree of polymerization: 1.2) were uniformly mixed to obtain a mixture; 600 g (12%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 150 g (3%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0055] Through testing, the sludge and paint film removal rate of this embodiment reaches 92%.

[0056] Example 4

[0057] In terms of mass percentage, 3250 g (65%) of limonene and 900 g (18%) of APG0810 alkyl polyglycoside (degree of polymerization: 1.2) were mixed uniformly to obtain a mixture; 750 g (15%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 150 g (3%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0058] Through testing, the sludge and paint film removal rate of this embodiment reaches 94%.

[0059] Example 5

[0060] In terms of mass percentage, 3400 g (68%) of limonene and 700 g (14%) of APG0810 alkyl polyglycoside (degree of polymerization: 1.2) were mixed uniformly to obtain a mixture; 500 g (10%) of potassium pyrophosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 400 g (8%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0061] Through testing, the sludge and paint film removal rate of this embodiment reaches 94%.

[0062] Example 6

[0063] In terms of mass percentage, 3400 g (68%) of limonene and 500 g (10%) of nonylphenol polyoxyethylene ether were mixed uniformly to obtain a mixture; 750 g (15%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 350 g (7%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for speed control system deposits.

[0064] Through testing, the sludge and paint film removal rate of this embodiment reaches 95%.

[0065] Example 7

[0066] In terms of mass percentage, 3400 g (68%) of limonene and 750 g (15%) of APG0810 alkyl polyglycoside (degree of polymerization: 1.2) were uniformly mixed to obtain a mixture; 500 g (10%) of trisodium metaphosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 350 g (7%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0067] Through testing, the sludge and paint film removal rate of this embodiment reaches 96%.

[0068] Example 8

[0069] In terms of mass percentage, 3400 g (68%) of limonene and 750 g (15%) of APG1214 alkyl polyglycoside (degree of polymerization: 1.8) were uniformly mixed to obtain a mixture; 600 g (12%) of potassium pyrophosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 250 g (5%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0070] Through testing, the sludge and paint film removal rate of this embodiment reaches 95%.

[0071] Example 9

[0072] In terms of mass percentage, 3400 g (68%) of limonene and 850 g (17%) of APG1214 alkyl polyglycoside (degree of polymerization: 1.5) were uniformly mixed to obtain a mixture; 600 g (12%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 150 g (3%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0073] Through testing, the sludge and paint film removal rate of this embodiment reaches 94%.

[0074] Example 10

[0075] In terms of mass percentage, 3500 g (70%) of limonene and 500 g (10%) of nonylphenol polyoxyethylene ether were mixed uniformly to obtain a mixture; 600 g (12%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 400 g (8%) of tea extract was added, and stirring was continued until it was completely uniform to obtain a cleaning agent for speed control system deposits.

[0076] Through testing, the sludge and paint film removal rate of this embodiment reaches 92%.

[0077] Embodiment 11

[0078] In terms of mass percentage, 3500 g (70%) of limonene and 500 g (10%) of fatty alcohol polyoxyethylene ether were mixed uniformly to obtain a mixture; 750 g (15%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 250 g (5%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for speed control system deposits.

[0079] Through testing, the sludge and paint film removal rate of this embodiment reaches 92%.

[0080] Example 12

[0081] In terms of mass percentage, 3500 g (70%) of limonene and 750 g (15%) of APG0814 alkyl polyglycoside (degree of polymerization: 1.5) were uniformly mixed to obtain a mixture; 500 g (10%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 250 g (5%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0082] Through testing, the sludge and paint film removal rate of this embodiment reaches 98%.

[0083] Embodiment 13

[0084] In terms of mass percentage, 3500 g (70%) of limonene and 750 g (15%) of APG0814 alkyl polyglycoside (degree of polymerization: 1.5) were uniformly mixed to obtain a mixture; 600 g (12%) of trisodium metaphosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 150 g (3%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for deposits in a speed control system.

[0085] Through testing, the sludge and paint film removal rate of this embodiment reaches 95%.

[0086] Embodiment 14

[0087] In terms of mass percentage, 3500 g (70%) of limonene and 750 g (15%) of nonylphenol polyoxyethylene ether were mixed uniformly to obtain a mixture; 500 g (10%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 250 g (5%) of tea extract was added, and stirring was continued until completely uniform to obtain a cleaning agent for speed control system deposits.

[0088] Through testing, the sludge and paint film removal rate of this embodiment reaches 94%.

[0089] Embodiment 15

[0090] In terms of mass percentage, 3500 g (70%) of limonene and 750 g (15%) of fatty alcohol polyoxyethylene ether were mixed uniformly to obtain a mixture; 500 g (10%) of trisodium phosphate was added to the mixture, and stirring was continued to ensure sufficient mixing; finally, 250 g (5%) of tea extract was added, and stirring was continued until it was completely uniform to obtain a cleaning agent for speed control system deposits.

[0091] Through testing, the sludge and paint film removal rate of this embodiment reaches 95%.

[0092] The cleaning agent provided by the present invention shows high efficiency in removing sludge and paint film in phosphate ester oil in laboratory tests, and shows extremely low corrosivity in metal corrosion tests.

[0093] The cleaning agent prepared in Example 12 of the present invention is used to clean the speed regulating system, comprising the following steps:

[0094] Use an oil filter to slowly introduce 140L of cleaning agent into the fire-resistant oil tank, and keep the speed control system oil pump open for 5 hours to ensure that the cleaning agent and fire-resistant oil are evenly mixed;

[0095] After the cleaning agent and fire-resistant oil are evenly mixed, turn off the speed control system cooler and raise the oil temperature of the fire-resistant oil to 65°C;

[0096] Keep the oil temperature at 65℃, and start the oil pump of the speed control system to circulate and flush the speed control system;

[0097] During flushing, tap the bends in the system oil circuit to promote the removal of sludge from the pipeline;

[0098] After flushing for 24 hours, the fire-resistant oil should be drained quickly to ensure that the sludge that is well dissolved at high temperature can be discharged.

[0099] After cleaning with the above-mentioned cleaning agent, a visual inspection showed that there was no sludge or paint film attached to the inner surface of the system oil tank. After the new anti-oil oil injected into the speed control system circulated, the MPC value dropped from the original 34 to 4, and the sludge precipitation index changed from "yes" to "no", and the cleaning effect was good.

[0100] The cleaning agent provided by the present invention is suitable for various equipment that needs to use phosphate fire-resistant oil, especially for key equipment in the power, aviation and other industries, and has broad market prospects and industrial application value. Through the present invention, the maintenance efficiency and safety of equipment can be greatly improved, providing a new environmental protection solution for related industries.

[0101] The endpoints and any values ​​of the scope disclosed in the present invention are not limited to the precise scope or value, and these scopes or values ​​should be understood to include values ​​close to these scopes or values. For numerical ranges, the endpoint values ​​of each scope, the endpoint values ​​of each scope and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be regarded as specifically disclosed in this article. Hereinafter, in principle, each technical solution can be combined with each other to obtain a new technical solution, which should also be regarded as specifically disclosed in this article.

[0102] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art can still modify or make equivalent substitutions to the specific implementations of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. A cleaning agent for deposits in a speed control system, characterized in that: Includes limonene, phosphates, non-ionic surfactants and tea extract.

2. A cleaning agent for deposits in a speed control system according to claim 1, characterized in that: Calculated by mass percentage, the limonene accounts for 65% to 70%, the phosphate accounts for 10% to 15%, the nonionic surfactant accounts for 10% to 20% and the tea extract accounts for 3% to 8%.

3. A cleaning agent for deposits in a speed control system according to claim 1, characterized in that: The nonionic surfactant includes one of alkyl polyglycoside, nonylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.

4. A cleaning agent for deposits in a speed control system according to claim 3, characterized in that: The alkyl polyglycoside is one or more of APG0810, APG0814 and APG1214.

5. The cleaning agent for deposits in a speed control system according to claim 3, characterized in that: The polymerization degree of the alkyl polyglycoside is between 1.2 and 1.

8.

6. A cleaning agent for deposits in a speed control system according to claim 1, characterized in that: The phosphate includes one or more of trisodium phosphate, potassium pyrophosphate, and trisodium metaphosphate.

7. The method for preparing a cleaning agent for deposits in a speed control system according to any one of claims 1 to 6, characterized in that: The limonene and the nonionic surfactant are mixed evenly to obtain a mixture; phosphate is added to the mixture and mixed evenly, and then the tea extract is added and mixed evenly to obtain the cleaning agent.

8. The method for using the cleaning agent for deposits in a speed control system according to any one of claims 1 to 6, characterized in that: include: Add the cleaning agent according to the amount of fire-resistant oil in the speed control system; After the cleaning agent and fire-resistant oil are evenly mixed, the oil temperature of the fire-resistant oil is raised to the preset temperature, and the speed control system is circulated and flushed. After flushing for 24 to 36 hours, the fire-resistant oil is discharged.

9. The method for using the cleaning agent for deposits in a speed control system according to claim 8, characterized in that: The volume ratio of the fire-resistant oil to the cleaning agent is 10:1-1.

5.

10. The method for using the cleaning agent for deposits in a speed control system according to claim 8, characterized in that: The oil temperature is between 60 and 65°C.