Boiler water treatment agent and preparation method thereof

Abstract

The invention relates to the technical field of boiler water treatment, and particularly provides a boiler water treatment agent and a preparation method thereof.The boiler water treatment agent is prepared from, by mass, 20%-30% of MgCl2, 15%-25% of glycerin, 2%-6% of Al2O3 nanoparticles with the particle size of 30 nm, 0.7%-0.9% of xanthan gum, 0.4%-0.6% of vitamin E, 5%-15% of an extracting agent and the balance pure water. According to the boiler water treatment agent and the preparation method thereof, comprehensive design is conducted from the three aspects of improving the volumetric specific heat, the boiling point and the heat transfer efficiency, finally, media of the same volume can provide more heat values, and the heat energy supply density is improved.

Description

Technical Field

[0001] This application relates to the technical field of boiler water treatment, and particularly relates to a boiler water treatment agent and a preparation method thereof. Background Art

[0002] With the development of corrosion-resistant materials such as acid-resistant steel and corrosion-resistant coating technologies such as ceramic coatings, boilers have a higher tolerance to acid-base corrosion, which provides a more relaxed choice for using new boiler water treatment agents.

[0003] For residential floor heating, the floor heating pipes generally use polymer materials and are naturally corrosion-resistant; most heating boilers do not involve steam heat exchange, but use the fluid in the boiler as the medium to directly supply the hot fluid to the pipes; existing heating boilers generally use atmospheric pressure boilers and use soft water as the fluid. Limited by the boiling point of the fluid, the heating temperature is controlled below 95°C to prevent steam from increasing the pipeline pressure and causing potential safety hazards.

[0004] However, the heat dissipation of modern high-rise dense residential floor heating is too high. With the heating equipment scale remaining unchanged in a short time, higher requirements are put forward for the heat supply density of heating. Therefore, it is necessary to develop a boiler water treatment agent with high heat supply under the same flow rate, so that the same volume of medium can provide more calorific value. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide a boiler water treatment agent and a preparation method thereof. On the one hand, this application provides a boiler water treatment agent, and the raw materials of the boiler water treatment agent are: MgCl2 with a mass fraction of 20 - 30%, glycerol with a mass fraction of 15 - 25%, 30nm-sized Al2O3 nanoparticles with a mass fraction of 2 - 6%, xanthan gum with a mass fraction of 0.7 - 0.9%, vitamin E with a mass fraction of 0.4 - 0.6%, an extractant with a mass fraction of 5 - 15%, and pure water to make up the balance; The preparation method of the extractant is as follows: Soybeans, green tea, rosemary, and olives with a mass ratio of (8 - 10) : (3 - 5) : (1 - 3) : (4 - 6) are crushed to pass through a 100-mesh sieve to obtain the material to be extracted. The material to be extracted is immersed in a 75% ethanol solution 3 times the mass of the material to be extracted and soaked at 55°C for 3 hours. After filtering through a 200-mesh sieve, it is all filled into a 5 mL centrifuge tube and centrifuged at 3000 rpm for 10 minutes to remove the precipitate. Then, it is evaporated under reduced pressure at 56°C with a vacuum degree of 0.098 Mpa until no liquid continuously flows out to obtain a mixed extract.

[0006] Further, the mass fraction of the MgCl2 is 26%.

[0007] Further, the mass fraction of the glycerol is 20%.

[0008] Further, the mass fraction of the Al2O3 nanoparticles is 4%.

[0009] Further, the mass fraction of the xanthan gum is 0.8%.

[0010] Further, the mass fraction of the vitamin E is 0.5%.

[0011] Further, the mass fraction of the extractant is 9%.

[0012] Further, the mass ratio of the soybeans is 9.

[0013] Further, the mass ratio of the green tea is 4.

[0014] Further, the mass ratio of the rosemary is 2.

[0015] Further, the mass ratio of the olives is 5.

[0016] On the other hand, the present application provides a method for preparing the boiler water treatment agent as described in any one of the above. The method for preparing the boiler water treatment agent is as follows: Mix the MgCl2, the glycerol, the xanthan gum, the vitamin E, the extractant and the pure water, and then add the Al2O3 nanoparticles while stirring to obtain the boiler water treatment agent.

[0017] The following beneficial effects may be brought about by the present application: The boiler water treatment agent and its preparation method of the present application are comprehensively designed from three aspects of improving the volumetric specific heat, boiling point and heat transfer efficiency. MgCl2, glycerol with a mass fraction of 15 - 25%, and 30 nm-sized Al2O3 nanoparticles with a mass fraction of 2 - 6% are added. Ultimately, the same volume of medium can provide more calorific value and improve the heat energy supply density. The extractant containing lipids and phenols extracted from plants, in combination with vitamin E and xanthan gum, plays the roles of dispersion, stabilization and antioxidation, and improves the stability of the system to avoid flocculation. Specific Embodiments

[0018] Here, in order to more clearly illustrate the overall concept of the present application, the overall solution of the present invention will be described in detail by way of examples below; in the following description, a large number of specific details are given to provide a more thorough understanding of the present invention; however, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details; in other examples, in order to avoid confusion with the present invention, some technical features well known to those skilled in the art are not described.

[0019] In this application, the boiler is from Shanghai Lanyan Boiler Co., Ltd., with a volume of 30 L, and is heated by normal pressure electricity. After one test, it is washed and then enters the next experiment. The average measured values by sampling are as follows: the content of soybean lecithin is 3.3%, the content of green tea polyphenols is 31.7%, the content of rosmarinic acid is 1.7%, and the oil content of olives is 32.5%. The above contents represent the quality standards of each raw material and do not represent the extraction target of the active substances in this application.

[0020] Unless otherwise specified, each raw material component in the following embodiments can be obtained through commercial channels, and the experimental instruments used are all conventional laboratory experimental instruments. The performance testing methods are known testing methods in this field. The overall operating space environment is 25 °C, and the air humidity is 30%.

[0021] The preferred embodiments are as follows: Example 1: The boiler water treatment agent is prepared by the following method: MgCl2 with a mass fraction of 26%, glycerol with a mass fraction of 20%, Al2O3 nanoparticles with a particle size of 30 nm and a mass fraction of 4%, xanthan gum with a mass fraction of 0.8%, vitamin E with a mass fraction of 0.5%, an extractant with a mass fraction of 9%, and the balance of pure water; The preparation method of the extractant is as follows: Soybeans, green tea, rosemary, and olives with a mass ratio of 9:4:2:5 are pulverized to pass through a 100-mesh sieve to obtain the material to be extracted. The material to be extracted is immersed in a 75% ethanol solution with a mass three times that of the material to be extracted and soaked at 55 °C for 3 h. After filtration through a 200-mesh sieve, it is all filled into a 5 mL centrifuge tube and centrifuged at 3000 rpm for 10 min to remove the precipitate. It is evaporated under reduced pressure at 56 °C and a vacuum degree of 0.098 Mpa until no liquid continuously flows out to obtain a mixed extract; The MgCl2, the glycerol, the xanthan gum, the vitamin E, the extractant, and the pure water are mixed and then the Al2O3 nanoparticles are added while stirring to obtain the boiler water treatment agent.

[0022] Examples 2 to 9: The difference between Example 2 and Example 1 is only that the mass fraction of MgCl2 is 20%; The difference between Example 3 and Example 1 is only that the mass fraction of MgCl2 is 30%; The difference between Example 4 and Example 1 is only that the mass fraction of glycerol is 15%; The difference between Example 5 and Example 1 is only that the mass fraction of glycerol is 25%; The difference between Example 6 and Example 1 is only that the mass fraction of Al2O3 nanoparticles is 2%; Example 7 is only different from Example 1 in that the mass fraction of Al2O3 nanoparticles is 6%; Example 8 is only different from Example 1 in that the mass fraction of the extractant is 5%; Example 9 is only different from Example 1 in that the mass fraction of the extractant is 15%.

[0023] Comparative Examples 1-15: Comparative Example 1 is only different from Example 1 in that the mass fraction of MgCl2 is 50%; Comparative Example 2 is only different from Example 1 in that the mass fraction of glycerol is 45%; Comparative Example 3 is only different from Example 1 in that the mass fraction of Al2O3 nanoparticles is 10%; Comparative Example 4 is only different from Example 1 in that the mass fraction of xanthan gum is 0.3%; Comparative Example 5 is only different from Example 1 in that the mass fraction of xanthan gum is 2%; Comparative Example 6 is only different from Example 1 in that the mass fraction of vitamin E is 0.2%; Comparative Example 7 is only different from Example 1 in that the mass fraction of vitamin E is 2%; Comparative Example 8 is only different from Example 1 in that the mass fraction of the extractant is 30%; Comparative Example 9 is only different from Example 1 in that the particle size of Al2O3 nanoparticles is 50 nm; Comparative Example 10 is only different from Example 1 in that the vacuum evaporation temperature is 70 °C; Comparative Example 11 is only different from Example 1 in that the mass ratio of soybeans in the preparation method of the extractant is reduced to zero, and the proportions of other components remain unchanged; Comparative Example 12 is only different from Example 1 in that the mass ratio of green tea in the preparation method of the extractant is reduced to zero, and the proportions of other components remain unchanged; Comparative Example 13 is only different from Example 1 in that the mass ratio of rosemary in the preparation method of the extractant is reduced to zero, and the proportions of other components remain unchanged; Comparative Example 14 is only different from Example 1 in that the mass ratio of olives in the preparation method of the extractant is reduced to zero, and the proportions of other components remain unchanged; Comparative Example 15 is only different from Example 1 in that the boiler water treatment agent is replaced with pure water of equal mass for comparison.

[0024] Prepare boiler batches with three times the number of samples, repeat each sample three times, and take the average value of the results with one significant digit after the decimal point as the result of this batch; the specific operation is as follows: Fill 25°C pure water according to 0.5 times the volume of the boiler, and pour in the boiler water treatment agent to fill the volume. Operate at normal pressure, stop heating electrically when the boiler water is slightly boiling, and count the power consumption to characterize the heat supply level of the medium in this batch. Also, because the volumes of each batch are the same, more power consumption can indicate that the same volume of medium can provide more calorific value. Calculate the heat supply improvement ratio; the heat supply improvement ratio of this batch = [ (power consumption of this batch - power consumption of Comparative Example 15) / power consumption of Comparative Example 15 ] × 100%. The test results are shown in Table 1, with the unit of %, and take one significant digit after the decimal point.

[0025] Table 1: Test results of heat supply improvement ratio for each example

[0026] It can be seen from the data in Table 1 that compared with other examples, the heat supply improvement ratio of the boiler water treatment agent and its preparation method in the embodiment of the present application, especially in Embodiment 1 of the present application, is relatively high; that is, the boiler water treatment agent and its preparation method in the embodiment of the present application, especially in Embodiment 1 of the present application, can achieve a better effect of high heat supply under the same flow rate.

[0027] The above are only the embodiments of the present application and are not used to limit the present application; for those skilled in the art, the present application can have various changes and modifications; any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A boiler water treatment agent, characterized in that, The raw materials of the boiler water treatment agent are as follows: MgCl2 with a mass fraction of 20 - 30%, glycerol with a mass fraction of 15 - 25%, Al2O3 nanoparticles with a particle size of 30 nm and a mass fraction of 2 - 6%, xanthan gum with a mass fraction of 0.7 - 0.9%, vitamin E with a mass fraction of 0.4 - 0.6%, an extractant with a mass fraction of 5 - 15%, and pure water to make up the balance; The preparation method of the extractant is as follows: Soybeans, green tea, rosemary, and olives with a mass ratio of (8 - 10):(3 - 5):(1 - 3):(4 - 6) are crushed to pass through a 100 - mesh sieve to obtain the material to be extracted. The material to be extracted is immersed in a 75% ethanol solution 3 times the mass of the material to be extracted and soaked at 55°C for 3 h. After filtering through a 200 - mesh sieve, it is all loaded into a 5 - mL centrifuge tube and centrifuged at 3000 rpm for 10 min to remove the precipitate. Then, it is evaporated under reduced pressure at 56°C with a vacuum degree of 0.098 Mpa until no liquid continuously flows out to obtain a mixed extract.

2. The boiler water treatment agent according to claim 1, wherein, The mass fraction of the MgCl2 is 26%.

3. The boiler water treatment agent according to claim 1, characterized in that, The mass fraction of the glycerol is 20%.

4. The boiler water treatment agent according to claim 1, wherein The mass fraction of the Al2O3 nanoparticles is 4%.

5. The boiler water treatment agent according to claim 1, characterized in that, The mass fraction of the xanthan gum is 0.8%.

6. The boiler water treatment agent according to claim 1, wherein The mass fraction of the vitamin E is 0.5%.

7. The boiler water treatment agent according to claim 1, characterized in that, The mass fraction of the extractant is 9%.

8. The boiler water treatment agent according to claim 1, characterized in that, The mass ratio of the soybeans is 9.

9. The boiler water treatment agent according to claim 1, characterized in that, The mass ratio of the green tea is 4.

10. The boiler water treatment agent according to claim 1, characterized in that, The mass ratio of the rosemary is 2.

11. The boiler water treatment agent according to claim 1, characterized in that, The mass ratio of the olives is 5.

12. A preparation method of the boiler water treatment agent according to any one of claims 1 to 11, characterized in that, The preparation method of the boiler water treatment agent is: mix the MgCl2, the glycerol, the xanthan gum, the vitamin E, the extractant, and the pure water, and then add the Al2O3 nanoparticles while stirring to obtain the boiler water treatment agent.

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