High-density solute and preparation method thereof

Abstract

The invention provides a high-density solute and a preparation method thereof, the high-density solute comprises a solute body and an instantizer used for assisting the solute body to be uniformly dissolved in water, and the instantizer can react with water to generate the solute body. Through the combined design of the solute body and the instantizer, the high-density solute provided by the invention not only has the characteristic of high density so as to improve the solute loading capacity under the same volume, but also can remarkably accelerate the dissolution rate of the solute body by virtue of the characteristic that the instantizer is preferentially dissolved and reacts with water to generate the solute body, so that rapid and uniform dissolution is realized; no extra impurities are introduced in the whole process; the solute is suitable for the field where the solute needs to be rapidly and uniformly dissolved, and stability and reliability of solute supply in an application scene are effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of underwater solute replenishment technology, and in particular to a high-density solute and its preparation method. Background Technology

[0002] Underwater equipment (such as underwater exploration devices, deep-sea robots, and underwater emergency liquid supply equipment) operates under significant spatial constraints. Due to limitations in carrier structure design, load capacity, and the unique underwater operating environment, the internal cavities available for solute storage are typically extremely compact, and it is difficult to increase the solute capacity by expanding the storage space. During the continuous operation of underwater equipment, the stability of solute supply directly determines the equipment's operating time and accuracy. Therefore, carrying as much solute as possible within a limited storage volume becomes a core requirement for ensuring the efficient operation of underwater equipment, and increasing solute density is a key technological direction for achieving this goal.

[0003] To meet the high-density solute requirements of underwater equipment, current technologies primarily employ two main processes to increase solute density: compression molding and melt casting, thereby maximizing the total solute carrying capacity. However, as solute density increases, its dissolution rate decreases, necessitating additional stirring to ensure uniform solute distribution. Furthermore, in the later stages of operation, as the total solute volume decreases, its heat of solution and heat of reaction diminish, leaving the remaining solute difficult or even insoluble, leading to instability in later stages of operation.

[0004] Therefore, there is an urgent need for a high-density solute and its preparation method to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-density solute and its preparation method, which solves the technical problem that existing high-density solutes dissolve slowly and are difficult to dissolve in the later stages, resulting in insufficient stability of underwater equipment.

[0006] To solve the above-mentioned technical problems, the present invention first provides a high-density solute, which includes a solute bulk and a quick-dissolving agent for assisting the solute bulk to dissolve uniformly in water; wherein the quick-dissolving agent can react with water to generate the solute bulk.

[0007] Preferably, the stoichiometric ratio of the bulk solute to the instantaneous solvent in the high-density solute is (9-24):1.

[0008] Preferably, the density of the high-density solute is 1.8 to 2.2 g / ml.

[0009] Preferably, the bulk solute is NaOH or KOH, and the instant solvent is Na2O or K2O.

[0010] Accordingly, the present invention also provides a method for preparing a high-density solute as described in any of the above claims, the method comprising the following steps: S10, Under an inert environment, the solute bulk and the fast-dissolving precursor are mixed according to a preset stoichiometric ratio and then heated to a molten state to obtain a molten mixture; S20: Pour the molten mixture into a preset mold. After the temperature of the mixture in the preset mold drops below the set temperature, demold the mixture to obtain a high-density solute.

[0011] Preferably, in step S10, the preset stoichiometric ratio of the solute bulk and the rapidly soluble precursor is (10-25):1.

[0012] Preferably, the solute is NaOH and the fast-dissolving precursor is Na.

[0013] Preferably, in step S10, the temperature at which the solute bulk and the fast-dissolving precursor are mixed and heated to a molten state is 350–550°C.

[0014] Preferably, in step S20, the temperature is set to ≤50℃.

[0015] Preferably, in step S20, the stoichiometric ratio of the bulk solute to the instant solvent in the high-density solute is (9-24):1, and the density of the high-density solute is 1.8-2.2 g / ml.

[0016] The beneficial effects of this invention are as follows: Unlike existing technologies, this invention provides a high-density solute and its preparation method. The high-density solute includes a solute bulk and a rapid solvent to assist in the uniform dissolution of the solute bulk in water. The rapid solvent reacts with water to generate the solute bulk. The high-density solute provided by this invention, through the combined design of the solute bulk and the rapid solvent, possesses both high density characteristics to increase the solute loading in the same volume, and the ability to significantly accelerate the dissolution rate of the solute bulk and achieve rapid and uniform dissolution by leveraging the preferential dissolution and reaction with water of the rapid solvent to generate the solute bulk, without introducing any additional impurities throughout the process. This solute is suitable for applications requiring rapid and uniform solute dissolution, effectively ensuring the stability and reliability of solute supply in application scenarios. Attached Figure Description

[0017] Figure 1 A flowchart illustrating the method for preparing high-density solutes provided by this invention; Figure 2 The dissolution rate diagrams are for the high-density solutes provided in Examples 1 and 2 and the conventional solutes provided in the comparative examples. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] The present invention first provides a high-density solute, which includes a solute bulk and a quick-dissolving agent for assisting the solute bulk to dissolve uniformly in water; wherein the quick-dissolving agent can react with water to generate the solute bulk.

[0020] Specifically, the aforementioned high-density solute, through the combined design of solute bulk and fast solvent, not only possesses high density characteristics to increase the solute loading in the same volume, but also leverages the characteristic of the fast solvent to react with water to generate solute bulk, simultaneously achieving rapid solute dissolution and uniform dispersion, with no additional impurities introduced throughout the process, effectively ensuring the stability of solute supply in application scenarios, and adapting to the application requirements that require rapid and uniform solute dissolution.

[0021] In this embodiment of the invention, the stoichiometric ratio of the bulk solute to the instant solvent in the high-density solute is (9-24):1. The instant solvent has strong adaptability, which can fully react with water to exothermically stir, efficiently assist the bulk solute to dissolve quickly and uniformly without introducing impurities, and avoid the reaction runaway due to excessive instant solvent. The bulk solute accounts for the majority of the total volume. Combined with the high density characteristics, it can maximize the solute loading in the same volume, while ensuring the stability of the solute supply throughout the process, perfectly adapting to the application scenarios that require rapid and uniform dissolution.

[0022] In this embodiment of the invention, the density of the high-density solute is 1.8–2.2 g / ml. This density range is compatible with the combined characteristics of the solute bulk and the instant solvent, ensuring both the density of the solute and the reaction efficiency between the instant solvent and water. This synergistic effect achieves rapid and uniform dissolution without introducing impurities, further ensuring the stability of solute supply in application scenarios.

[0023] In one embodiment, the bulk solute is NaOH, and the fast solvent is Na2O, which is generated by the reaction of metallic Na with excess NaOH.

[0024] In another embodiment, KOH is selected as the bulk solute and K2O is selected as the fast solvent. In this case, K2O is generated by the reaction of metallic K with excess KOH.

[0025] Please see Figure 1 The present invention also provides a method for preparing a high-density solute, the method comprising the following steps: S10, Under an inert environment, the solute bulk and the fast-dissolving precursor are mixed according to a preset stoichiometric ratio and then heated to a molten state to obtain a molten mixture; S20: Pour the molten mixture into a preset mold. After the temperature of the mixture in the preset mold drops below the set temperature, demold the mixture to obtain a high-density solute.

[0026] The above-mentioned method for preparing high-density solutes can precisely control the stoichiometric ratio of the solute bulk and the fast-dissolving precursor, ensuring that the density of the finished product is stable within the target range (1.8-2.2 g / ml) and the composition is uniform. It can also avoid the oxidation of raw materials or the introduction of impurities, ensuring the purity of the product. The process steps are simple and controllable and suitable for mass production.

[0027] In step S10, the preset stoichiometric ratio of the solute bulk and the fast-dissolving precursor is (10-25):1; the solute bulk is NaOH, and the fast-dissolving precursor is Na; the above preset stoichiometric ratio can ensure that Na reacts fully to generate Na2O fast solvent without the introduction of impurities; at the same time, the excess NaOH not only ensures the high density and high loading of the finished product, but also achieves rapid and uniform dissolution through sufficient fast solvent, with a scientific ratio and stable effect.

[0028] In step S10, the solute bulk and the fast-dissolving precursor are mixed and heated to a molten state at a temperature of 350–550°C. The above heating temperature range is adapted to the reaction characteristics of NaOH and Na, which can ensure that the two melt quickly and react fully to generate Na2O fast solvent, while avoiding incomplete reaction due to excessively low temperature or the introduction of impurities due to excessively high temperature, thus ensuring that the density of the finished product meets the standard and the solubility is stable.

[0029] Specifically, when NaOH is selected as the solute bulk and Na is selected as the fast-dissolving precursor in step S10, NaOH and Na are mixed in an inert environment (Ar) at a stoichiometric ratio of (10-25):1 and heated to a molten state (350-550℃) to obtain a molten mixture; wherein, the following reaction occurs during the melting process of the above mixture: Na(l) + NaOH(l) = Na2O(s) + 1 / 2H2(g); at this time, the obtained molten mixture includes NaOH and Na2O.

[0030] In step S20, the temperature is set to ≤50℃; the stoichiometric ratio of the solute bulk to the instant solvent in the high-density solute is (9~24):1, and the density of the high-density solute is 1.8~2.2g / ml; setting the temperature to ≤50℃ ensures that the molten mixture is fully solidified, easy to demold, and the finished product has a dense structure; the stoichiometric ratio of (9~24):1 and the density of 1.8~2.2g / ml are well matched, which ensures that the instant solvent is sufficient to achieve rapid and uniform dissolution, and maximizes the solute loading.

[0031] The present invention will be further described below with reference to specific embodiments.

[0032] Example 1: Example 1 first provides a high-density solute, which includes a solute bulk and a quick-dissolving agent for assisting the solute bulk to dissolve uniformly in water; wherein the quick-dissolving agent can react with water to generate the solute bulk.

[0033] In Example 1, the bulk solute was NaOH and the instant solvent was Na2O; the stoichiometric ratio of the bulk solute to the instant solvent in the high-density solute was 9:1, and the density of the high-density solute was 1.8–2.2 g / ml.

[0034] Example 1 also provides a method for preparing a high-density solute, the method comprising the following steps: Step (1): In an inert argon gas circulation environment, Na and NaOH with a stoichiometric ratio of 1:10 are heated together to the molten state at a temperature of 350℃~550℃ to obtain a molten mixture. The chemical reaction that occurs during the melting process is: Na(l)+NaOH(l)=Na2O(s)+1 / 2H2(g). Step (2): Pour the molten mixture into a preset mold. After the temperature of the mixture in the preset mold drops below 50°C, demold it to obtain a high-density solute.

[0035] Example 2: Example 2 first provides a high-density solute, which includes a solute bulk and a quick-dissolving agent for assisting the solute bulk to dissolve uniformly in water; wherein the quick-dissolving agent can react with water to generate the solute bulk.

[0036] In Example 2, the bulk solute was NaOH and the instant solvent was Na2O; the stoichiometric ratio of the bulk solute to the instant solvent in the high-density solute was 24:1, and the density of the high-density solute was 1.8–2.2 g / ml.

[0037] Example 2 also provides a method for preparing a high-density solute, the method comprising the following steps: Step (1): In an inert argon gas circulation environment, Na and NaOH with a stoichiometric ratio of 1:25 are heated together to the molten state at a temperature of 350℃~550℃ to obtain a molten mixture. The chemical reaction that occurs during the melting process is: Na(l)+NaOH(l)=Na2O(s)+1 / 2H2(g). Step (2): Pour the molten mixture into a preset mold. After the temperature of the mixture in the preset mold drops below 50°C, demold it to obtain a high-density solute.

[0038] Comparative example: A commercially available conventional solute, which is formed by melting NaOH, has a density of 2.0 g / ml.

[0039] Please see Figure 2 , Figure 2 The dissolution rate diagrams are provided for the high-density solutes in Examples 1 and 2 and the conventional solutes in the comparative examples; wherein, by Figure 2 It can be seen that the dissolution rate of Comparative Example 1 is only about 0.5 g / min, while the dissolution rate of Example 1 reaches 3 g / min, and the dissolution rate of Example 2 is further improved to 5 g / min. This shows that the present invention can significantly improve the dissolution rate of high-density solutes by adding the fast-dissolving precursor Na and controlling its stoichiometric ratio with NaOH; and with the appropriate increase of the Na proportion (the stoichiometric ratio is adjusted from 1:10 to 1:25), the amount of fast solvent Na2O generated increases, its exothermic reaction with water and stirring effect are stronger, and the dissolution rate is further accelerated, which fully verifies the effectiveness of the present invention in improving dissolution efficiency.

[0040] Unlike existing technologies, the high-density solute and its preparation method provided by this invention have the following advantages: 1. Pure and impurity-free composition: The raw materials (Na, NaOH) and the Na2O generated by the reaction are all converted into sodium hydroxide solution after reacting with water. No additional impurities are introduced throughout the process, which can ensure the purity of the solution in the application scenario.

[0041] 2. High density and high loading capacity: The specific gravity of commercially available instant NaOH granules is only about 1.0, and the specific gravity of commercially available molten NaOH is 2.0; while the molten NaOH of this invention contains a small amount of Na2O, and its solid specific gravity can reach 2.27, which is nearly 1 times higher than the specific gravity of solute in conventional technology, and the solute weight is increased by 100% in the same volume.

[0042] 3. Highly efficient and uniform dissolution: The fast solvent Na2O reacts violently with water, and the released heat causes local water vaporization, which simultaneously drives the internal stirring of the solvent. This not only significantly accelerates the dissolution rate, but also ensures uniform dispersion of the solute, avoiding the problem of uneven dissolution.

[0043] It should be noted that all the above embodiments belong to the same inventive concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0044] The above embodiments merely illustrate implementation methods of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A high-density solute, characterized in that, The high-density solute includes a solute bulk and a quick-dissolving agent to assist the solute bulk in uniform dissolution in water; wherein the quick-dissolving agent can react with water to generate the solute bulk.

2. The high-density solute according to claim 1, characterized in that, The stoichiometric ratio of the solute bulk to the instant solvent in the high-density solute is (9-24):

1.

3. The high-density solute according to claim 1, characterized in that, The density of the high-density solute is 1.8–2.2 g / ml.

4. The high-density solute according to claim 1, characterized in that, The solute is selected from NaOH or KOH, and the instant solvent is selected from Na2O or K2O.

5. A method for preparing a high-density solute as described in any one of claims 1 to 4, characterized in that, The method includes the following steps: S10, Under an inert environment, the solute bulk and the fast-dissolving precursor are mixed according to a preset stoichiometric ratio and then heated to a molten state to obtain a molten mixture; S20, the molten mixture is poured into a preset mold, and after the temperature of the mixture in the preset mold drops below the set temperature, the mold is demolded to obtain the high-density solute.

6. The method for preparing a high-density solute according to claim 5, characterized in that, In step S10, the preset stoichiometric ratio of the solute bulk and the rapidly soluble precursor is (10-25):

1.

7. The method for preparing a high-density solute according to claim 6, characterized in that, The solute in bulk is NaOH, and the fast-dissolving precursor is Na.

8. The method for preparing a high-density solute according to claim 5, characterized in that, In step S10, the temperature at which the solute bulk and the fast-dissolving precursor are mixed and heated to a molten state is 350–550°C.

9. The method for preparing a high-density solute according to claim 5, characterized in that, In step S20, the set temperature is ≤50℃.

10. The method for preparing a high-density solute according to claim 5, characterized in that, In step S20, the stoichiometric ratio of the solute bulk to the instant solvent in the high-density solute is (9-24):1, and the density of the high-density solute is 1.8-2.2 g / ml.

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