Production process of powder for descaling treatment of organic phosphoric acid water body

Abstract

The invention relates to the technical field of water body descaling, in particular to a production process of powder for descaling treatment of an organic phosphoric acid water body. The method comprises the following steps: mixing and stirring liquid phosphorous acid and hydrochloric acid, and then dropwise adding a hydroxyethyl ethylenediamine aqueous solution; dropwise adding formaldehyde, then carrying out heat-preservation reflux treatment, and carrying out concentration and heating treatment to obtain a solid product; and mixing the solid product with deionized water, filtering impurities, decolorizing, cooling, discharging, and grinding to obtain the hydroxyethyl ethylenediamine trimethylene phosphoric acid powder. The hydroxyethyl ethylenediamine trimethylene phosphoric acid powder can be stably combined with metal ions through chelation, phosphate groups in the molecular structure of the hydroxyethyl ethylenediamine trimethylene phosphoric acid powder have strong electrophilicity and can be subjected to ion exchange with the metal ions, and a stable complex is formed through complexation reaction; metal ions and other ions are prevented from being combined and precipitated, so that precipitates formed by the metal ions are prevented from being attached to the surface of equipment, and the equipment is effectively prevented from scaling.

Description

Technical Field

[0001] The invention relates to the technical field of water body descaling, in particular to a production process of organic phosphoric acid water body descaling powder. Background Art

[0002] The scale in the water body is mainly formed by the combination of calcium and magnesium ions in the water with carbonate, sulfate, etc. In the circulating water system, the formation of scale will block the pipes in the condenser, reduce the flow rate, affect the refrigeration effect, and even cause the equipment to be scrapped in severe cases. In addition, the formation of scale will provide a living place for anaerobic bacteria, promote the growth of algae, and further aggravate the corrosion and blockage problems of equipment.

[0003] In order to remove scale in water, CN106542659A relates to a descaling agent and a preparation method thereof, which comprises 6-10 parts of aminosulfonic acid, 6-8 parts of sodium chloride, 2-4 parts of disodium ethylenediaminetetraacetic acid, 6-8 parts of pickling corrosion inhibitor, 2-4 parts of konjac gum, 1-3 parts of thickener, 3-5 parts of methylcellulose, and 1-2 parts of nitrilotriacetic acid, and the descaling agent prepared with the above ingredients is used to clean the scale in the pipeline to ensure smooth pipeline. Although the aminosulfonic acid component in the descaling agent contains an amino group and a sulfonic acid group, which makes aminosulfonic acid have the characteristics of a bifunctional substance and can undergo a variety of chemical reactions, its structure lacks a functional group that can form a stable complex with heavy metal ions. Therefore, when used as a descaling agent, its binding property with heavy metal ions is relatively poor. This characteristic limits the effect of aminosulfonic acid descaling agents binding to heavy metal ions, and the treatment effect is poor when treating complex water containing heavy metal ions.

[0004] In order to ensure the descaling effect on heavy metal ion scale, a production process of organic phosphoric acid water descaling powder is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a production process of organic phosphoric acid water descaling powder to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides a production process for an organophosphoric acid water descaling powder, comprising the following steps:

[0007] S1. In a chemical reaction kettle, liquid phosphorous acid and hydrochloric acid are mixed and stirred, and then an aqueous solution of hydroxyethylethylenediamine is slowly added dropwise;

[0008] S2, preheating the reactor, and slowly adding formaldehyde when the reactor temperature is 98-105°C, and the adding time is 100-200 minutes;

[0009] S3, after the above reaction kettle is finished dropping, it is first subjected to heat preservation and reflux treatment, and then concentrated and heated to obtain a solid product;

[0010] S4. The solid product is mixed with deionized water, filtered and decolorized, cooled, discharged and ground to obtain hydroxyethylethylenediaminetri(methylenephosphoric acid) powder.

[0011] As a further improvement of the technical solution, in S1, the dripping time range of the hydroxyethylethylenediamine aqueous solution is 110-180 min, and the chemical reaction temperature is controlled below 45° C. during the dripping process.

[0012] As a further improvement of the technical solution, in S2, the pre-heating treatment is to slowly heat the chemical reactor to 90-100° C. after the dripping of the hydroxyethylethylenediamine aqueous solution is completed.

[0013] As a further improvement of the technical solution, in S2, the formaldehyde dropping temperature is one of 100° C. or 103° C., and the formaldehyde dropping time is one of 120 min, 150 min or 180 min.

[0014] As a further improvement of the technical solution, in S3, the heat preservation reflux treatment is to keep the chemical reactor warm at a temperature of 100-110° C., and the heat preservation time ranges from 80-160 min.

[0015] As a further improvement of the technical solution, the insulation temperature of the chemical reactor is one of 102° C. or 105° C., and the insulation time is one of 100 min, 120 min or 150 min.

[0016] As a further improvement of the technical solution, in S3, the concentration and heating treatment is to heat the chemical reactor to 115-140° C. and then start concentrating, and concentrate to dryness to obtain a solid product.

[0017] As a further improvement of the technical solution, the concentration temperature of the chemical reactor is one of 118°C, 125°C, 130°C or 135°C.

[0018] As a further improvement of the technical solution, in S4, after the solid product is mixed with deionized water, activated carbon is added to filter press to remove mechanical impurities and decolorize, and then water is added to adjust the content, and the product is cooled and discharged.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the production process of the organic phosphoric acid water descaling powder, liquid phosphorous acid and hydrochloric acid are mixed and stirred, and then a hydroxyethylethylenediamine aqueous solution is added dropwise, the amine group of hydroxyethylethylenediamine reacts with the chloride ion of hydrochloric acid to generate hydroxyethylethylenediamine hydrochloride through the combination of ammonium ion and chloride ion, and then formaldehyde is added dropwise to reduce the liquid phosphorous acid to a phosphoric acid compound to combine with the hydrochloride, and then the hydroxyethylethylenediamine tri-(methylene phosphonic acid) acid powder is obtained through filtration and decolorization. The hydroxyethylethylenediamine tri-(methylene phosphonic acid) acid powder can stably bind metal ions through chelation, and the phosphoric acid group in the molecular structure of the hydroxyethylethylenediamine tri-(methylene phosphonic acid) acid powder has strong electrophilicity and can undergo ion exchange with metal ions to form a stable complex through a complex reaction, thereby preventing the metal ions from combining with other ions and precipitating, thereby preventing the metal ions from forming precipitates attached to the surface of the equipment, and effectively avoiding scaling of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a flow chart of the present invention;

[0022] Figure 2 The scale removal rate of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 3 The scale removal rate of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 4 The scale removal rate of the present invention is shown in FIG. Figure 3 . DETAILED DESCRIPTION

[0025] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1 As shown, the purpose of this embodiment is to provide a production process for organic phosphoric acid water descaling powder, and the specific steps are as follows:

[0028] S1. In a chemical reaction kettle, liquid phosphorous acid and hydrochloric acid are mixed and stirred, and then the aqueous solution of hydroxyethylethylenediamine is slowly added dropwise. The dropping time of the aqueous solution of hydroxyethylethylenediamine is 110 minutes, and the chemical reaction temperature is controlled below 45° C. during the dropping process;

[0029] S2. After the addition of the hydroxyethylethylenediamine aqueous solution is completed, the chemical reactor is preheated, the chemical reactor is slowly heated to 100° C., and formaldehyde is slowly added dropwise when the reactor temperature is 98° C., and the addition time is 200 min;

[0030] S3, after the above reactor is finished dropping, it is firstly subjected to heat preservation and reflux treatment, and then subjected to concentration and heating treatment to obtain a solid product, wherein the heat preservation and reflux treatment is to heat the chemical reactor at a temperature of 100° C., and the heat preservation time is 160 min, and the concentration and heating treatment is to heat the chemical reactor to 115° C. and then start concentrating, and concentrate to dryness to obtain a solid product;

[0031] S4. After the solid product is mixed with deionized water, activated carbon is added to filter press to remove mechanical impurities and decolorize, and then water is added to adjust the content. The product is cooled and ground to obtain hydroxyethylethylenediaminetri(methylenephosphoric acid) powder.

[0032] Example 2

[0033] The purpose of this embodiment is to provide a production process for organic phosphoric acid water descaling powder, and the specific steps are as follows:

[0034] S1. In a chemical reaction kettle, liquid phosphorous acid and hydrochloric acid are mixed and stirred, and then the aqueous solution of hydroxyethylethylenediamine is slowly added dropwise. The dropping time of the aqueous solution of hydroxyethylethylenediamine is 140 minutes, and the chemical reaction temperature is controlled below 45° C. during the dropping process;

[0035] S2. After the addition of the hydroxyethylethylenediamine aqueous solution is completed, the chemical reactor is preheated, the chemical reactor is slowly heated to 95° C., and formaldehyde is slowly added dropwise when the reactor temperature is 101° C., and the addition time is 160 min;

[0036] S3, after the above reactor is finished dropping, it is firstly subjected to heat preservation and reflux treatment, and then subjected to concentration and heating treatment to obtain a solid product, wherein the heat preservation and reflux treatment is to heat the chemical reactor at a temperature of 104° C., and the heat preservation time is 130 min, and the concentration and heating treatment is to heat the chemical reactor to 120° C. and then start concentrating, and concentrate to dryness to obtain a solid product;

[0037] S4. After the solid product is mixed with deionized water, activated carbon is added to filter press to remove mechanical impurities and decolorize, and then water is added to adjust the content. The product is cooled and ground to obtain hydroxyethylethylenediaminetri(methylenephosphoric acid) powder.

[0038] Example 3

[0039] The purpose of this embodiment is to provide a production process for organic phosphoric acid water descaling powder, and the specific steps are as follows:

[0040] S1. In a chemical reaction kettle, liquid phosphorous acid and hydrochloric acid are mixed and stirred, and then the aqueous solution of hydroxyethylethylenediamine is slowly added dropwise. The dropping time of the aqueous solution of hydroxyethylethylenediamine is 180 minutes, and the chemical reaction temperature is controlled below 45° C. during the dropping process;

[0041] S2. After the addition of the hydroxyethylethylenediamine aqueous solution is completed, the chemical reactor is preheated, the chemical reactor is slowly heated to 90° C., and formaldehyde is slowly added dropwise when the reactor temperature is 105° C., and the addition time is 100 min;

[0042] S3, after the above reactor is finished dropping, it is firstly subjected to heat preservation and reflux treatment, and then subjected to concentration and heating treatment to obtain a solid product, wherein the heat preservation and reflux treatment is to heat the chemical reactor at a temperature of 110° C., and the heat preservation time is 80 min, and the concentration and heating treatment is to heat the chemical reactor to 140° C. and then start concentrating, and concentrate to dryness to obtain a solid product;

[0043] S4. After the solid product is mixed with deionized water, activated carbon is added to filter press to remove mechanical impurities and decolorize, and then water is added to adjust the content. The product is cooled and ground to obtain hydroxyethylethylenediaminetri(methylenephosphoric acid) powder.

[0044] Table 1 Comparison of process parameters in Examples 1-3

[0045]

[0046] According to the production process provided in Examples 1-3, a water descaling powder, i.e., hydroxyethylethylenediaminetri(methylenephosphonic acid) powder, is prepared. The prepared water descaling powder is put into a boiler with scale at 20-40°C for descaling treatment. After standing for 5 hours, the scale removal rate of the water descaling powder is detected. The scale removal rate = (total mass of scale before treatment - total mass of scale after treatment) / total mass of scale before treatment × 100%. The results are shown in Table 2.

[0047] Table 2 Comparison of scale removal rates of water descaling powders prepared in Examples 1-3

[0048] Example 1 Example 2 Example 3 Scale removal rate / % 90 93 92

[0049] It can be seen from Table 2 that the water descaling powders prepared in Examples 1-3 all have good scale removal rates and good descaling effects on water bodies.

[0050] In the present invention, liquid phosphorous acid and hydrochloric acid are mixed and stirred, and then an aqueous solution of hydroxyethylethylenediamine is slowly added dropwise, and the amine group of hydroxyethylethylenediamine reacts with the chloride ion of hydrochloric acid to form hydrochloride. The specific process is as follows:

[0051] The amine group (-NH2) of hydroxyethylethylenediamine is nucleophilic and reacts with hydrochloric acid (HCl) in hydrochloric acid to form ammonium ions (NH4+) and chloride ions (Cl-). The ammonium ions and chloride ions generated by the reaction then combine to form the corresponding hydrochloride, that is, the reaction of hydroxyethylethylenediamine with hydrochloric acid generates the hydrochloride of hydroxyethylethylenediamine.

[0052] Then, formaldehyde is added dropwise, and the strong reducing property of formaldehyde (HCHO) is used to reduce the liquid phosphorous acid (H3PO3) to a phosphoric acid compound (H3PO4), that is, HCHO+H3PO3→H3PO4. In the reaction, formaldehyde acts as a reducing agent, the aldehyde group of formaldehyde is oxidized, and the phosphorus element of phosphorous acid is reduced, so that the phosphorous acid is reduced to a phosphoric acid compound, and then the phosphoric acid compound is combined with hydrochloride, and finally, deionized water is added, and activated carbon is added to filter to remove mechanical impurities and decolorize, and water is added to adjust the content to obtain the finished product of hydroxyethylethylenediaminetri(methylenephosphonic acid), and then the mixture is passed through The hydroxyethylethylenediamine tri-(methylene phosphonic acid) powder is obtained by grinding. The hydroxyethylethylenediamine tri-(methylene phosphonic acid) powder can stably bind metal ions such as calcium, magnesium, iron, and copper to the molecules of the hydroxyethylethylenediamine tri-(methylene phosphonic acid) powder through chelation. The phosphate groups in the molecular structure of the hydroxyethylethylenediamine tri-(methylene phosphonic acid) powder have strong electrophilicity and can exchange ions with metal ions to form stable complexes through complexation reactions, thereby preventing metal ions from combining with other ions and precipitating, thereby preventing metal ions from forming precipitates attached to the surface of the equipment, and effectively avoiding equipment scaling.

[0053] Example 4

[0054] In the production process of hydroxyethylethylenediamine trimethylenephosphonic acid powder, the amine group provided by the hydroxyethylethylenediamine aqueous solution is combined with the chloride ion of hydrochloric acid to form hydrochloride, and then in the subsequent process, the liquid phosphorous acid is reduced to form a phosphoric acid compound and then combined with the hydrochloride to produce hydroxyethylethylenediamine trimethylenephosphonic acid salt. Therefore, in the early stage of production, the addition of hydroxyethylethylenediamine will affect the content of hydroxyethylethylenediamine trimethylenephosphonic acid salt in the final product hydroxyethylethylenediamine trimethylenephosphonic acid powder, thereby affecting the descaling performance of the hydroxyethylethylenediamine trimethylenephosphonic acid powder.

[0055] In order to verify the influence of the dropping time of the hydroxyethylethylenediamine aqueous solution and the chemical reaction temperature during the dropping process on the descaling performance of the final product hydroxyethylethylenediamine tri-(methylene phosphonic acid) powder, on the basis of Example 2, the dropping time of the hydroxyethylethylenediamine aqueous solution was set to 100 min or 200 min, and the chemical reaction temperature during the dropping process was set to 50°C or 60°C, hydroxyethylethylenediamine tri-(methylene phosphonic acid) powder was prepared, and the scale removal rate of the prepared hydroxyethylethylenediamine tri-(methylene phosphonic acid) powder was tested. The test method is consistent with the test method in the above embodiment and will not be repeated in this embodiment. The test results are shown in Table 3.

[0056] Table 3 Comparison of descaling performance of hydroxyethylethylenediamine tri-methylenephosphoric acid powder

[0057] Dropping time / min Chemical reaction temperature / ℃ Scale removal rate / % 100 50 86 100 60 83 200 50 84 200 60 81

[0058] According to Table 3, when the dropping time of the hydroxyethylethylenediamine aqueous solution is 100 min or 200 min, that is, the dropping time is not 110-180 min, and the chemical reaction temperature is controlled to be 50°C or 60°C during the dropping process, that is, not below 45°C, the scale removal rate of the prepared hydroxyethylethylenediamine tri(methylenephosphonic acid) powder is significantly lower than the scale removal rate of the hydroxyethylethylenediamine tri(methylenephosphonic acid) powder prepared in Example 2.

[0059] This proves that the dropping time of the hydroxyethylethylenediamine aqueous solution and the chemical reaction temperature during the dropping process will affect the descaling performance of the final product hydroxyethylethylenediamine tri(methylenephosphonic acid) powder, and when the dropping time of the hydroxyethylethylenediamine aqueous solution is not 110-180min, and the chemical reaction temperature is controlled not below 45°C during the dropping process, the descaling performance of the prepared hydroxyethylethylenediamine tri(methylenephosphonic acid) powder is poor.

[0060] Example 5

[0061] Formaldehyde has strong reducing properties. Under the action of formaldehyde, liquid phosphorous acid can undergo a reduction reaction to generate corresponding phosphoric acid compounds. The formaldehyde addition time will affect the amount of liquid phosphorous acid participating in the reduction reaction, and thus affect the amount of phosphoric acid compounds generated. In addition, a higher temperature during formaldehyde addition can also increase the reaction rate of formaldehyde and liquid phosphorous acid, thereby affecting the amount of phosphoric acid compounds generated, and ultimately affecting the content of hydroxyethylethylenediamine trimethylenephosphate in hydroxyethylethylenediamine trimethylenephosphate powder, thereby affecting the descaling performance of hydroxyethylethylenediamine trimethylenephosphate powder.

[0062] In order to determine the effect of the dropping time and dropping temperature of formaldehyde on the descaling performance of hydroxyethylethylenediaminetri(methylenephosphonic acid) powder, based on Example 2, the dropping time of formaldehyde was set to 80min, 120min, 150min, 180min or 210min, and the dropping temperature of formaldehyde was set to 95°C, 100°C, 103°C or 110°C, and hydroxyethylethylenediaminetri(methylenephosphonic acid) powder was prepared. The scale removal rate test method provided in the above embodiment was used for the test. The test results are as follows: Figure 2 shown.

[0063] according to Figure 2It can be seen that the scale removal rate of the hydroxyethylethylenediaminetri(methylenephosphonic acid) powder prepared when the formaldehyde dropping time is 80min or 210min or the formaldehyde dropping temperature is 95°C or 110°C is significantly lower than the scale removal rate of the hydroxyethylethylenediaminetri(methylenephosphonic acid) powder prepared when the formaldehyde dropping time is 100-200min or the formaldehyde dropping temperature is 98-105°C.

[0064] In addition, under the working conditions of this embodiment, when the formaldehyde dropping time is 120min, 150min, 180min or the formaldehyde dropping temperature is 100°C, 103°C, the prepared hydroxyethylethylenediaminetri(methylenephosphoric acid) powder has a higher scale removal rate.

[0065] Example 6

[0066] After the raw materials are added, the insulation reflux setting can provide a stable temperature environment, ensure that the reaction system is in a constant temperature environment, and keep the reactants within the ideal temperature range, thereby improving the efficiency of the reaction and the purity of the product; the steam of the reaction solution can be condensed and returned to the reaction system, thereby ensuring that the reaction materials are fully mixed and promoting the uniformity and sufficiency of the reaction, which can not only improve the efficiency of the reaction, but also help to improve the purity of the product and ensure the descaling effect on heavy metal ion scale.

[0067] In order to determine the effect of the heat preservation and reflux process on the descaling performance of hydroxyethylethylenediamine tri(methylenephosphoric acid) powder, on the basis of Example 2, the heat preservation temperature of the chemical reactor in the heat preservation and reflux process was set to 98°C, 102°C, 105°C or 112°C, and the heat preservation time was set to 60min, 100min, 120min, 150min or 180min, and hydroxyethylethylenediamine tri(methylenephosphoric acid) powder was prepared. The scale removal rate test method provided in the above embodiment was used for testing. The test results are as follows: Figure 3 shown.

[0068] according to Figure 3 It can be seen that the scale removal rate of the hydroxyethylethylenediaminetri(methylenephosphonic acid) powder prepared when the insulation temperature of the chemical reactor is 98°C or 112°C, or the insulation time is set to 60min or 180min, is significantly lower than the scale removal rate of the hydroxyethylethylenediaminetri(methylenephosphonic acid) powder prepared when the insulation temperature of the chemical reactor is 100-110°C, or the insulation time is 80-160min.

[0069] In addition, under the working conditions of this embodiment, when the insulation temperature of the chemical reactor is 102° C. or 105° C., or the insulation time is 100 min, 120 min, or 150 min, the prepared hydroxyethylethylenediaminetri(methylenephosphoric acid) powder has a higher scale removal rate.

[0070] Example 7

[0071] During the concentration treatment, the water in the chemical reactor is evaporated by heating to obtain a concentrated solution. This process not only increases the concentration of the mixed liquid in the reactor, but also removes other impurities in the solution to increase the content of effective ingredients, thereby increasing the purity of the subsequent output of hydroxyethylethylenediaminetrimethylphosphonic acid powder, thereby improving the scale removal efficiency of the powder.

[0072] In order to determine the effect of concentration temperature on the descaling performance of hydroxyethylethylenediamine tri(methylenephosphonic acid) powder, on the basis of Example 2, the temperature of the chemical reactor during the concentration and heating treatment was set to 110°C, 118°C, 125°C, 130°C, 135°C or 145°C, and hydroxyethylethylenediamine tri(methylenephosphonic acid) powder was prepared. The scale removal rate test method provided in the above example was used for the test. The test results are as follows: Figure 4 shown.

[0073] according to Figure 4 It can be seen that when the temperature of the chemical reactor is 110°C or 145°C, that is, not 115-140°C, the scale removal rate of the hydroxyethylethylenediaminetri(methylenephosphoric acid) powder prepared is significantly lower, indicating that the concentration temperature of 115-140°C is one of the important factors affecting the scale removal performance of hydroxyethylethylenediaminetri(methylenephosphoric acid) powder. Secondly, when the concentration temperature is 18°C, 125°C, 130°C or 135°C, the scale removal rate of the hydroxyethylethylenediaminetri(methylenephosphoric acid) powder prepared is higher.

[0074] Example 8

[0075] The water descaling powder is prepared according to the method provided in the above embodiment and the determined optimal preparation parameters, and then the prepared water descaling powder is put into a boiler with scale at 20-40°C for descaling. After standing for 5 hours, the scale removal rate of the water descaling powder is detected;

[0076] The test shows that under the working conditions of this embodiment, the descaling rate of the water descaling powder is 94%, and the descaling effect is better in treating complex water bodies containing heavy metal ions.

[0077] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A production process for an organophosphoric acid water descaling powder, characterized in that: The following steps are involved: S1. In a chemical reaction kettle, liquid phosphorous acid and hydrochloric acid are mixed and stirred, and then an aqueous solution of hydroxyethylethylenediamine is slowly added dropwise; S2, preheating the reactor, and slowly adding formaldehyde when the reactor temperature is 98-105°C, and the adding time is 100-200 minutes; S3, after the above reaction kettle is finished dropping, it is first subjected to heat preservation and reflux treatment, and then concentrated and heated to obtain a solid product; S4. The solid product is mixed with deionized water, filtered and decolorized, cooled, discharged and ground to obtain hydroxyethylethylenediaminetri(methylenephosphoric acid) powder.

2. The production process of the organic phosphoric acid water descaling powder according to claim 1, characterized in that: In S1, the dripping time of the hydroxyethylethylenediamine aqueous solution is in the range of 110-180 min, and the chemical reaction temperature is controlled below 45° C. during the dripping process.

3. The production process of the organic phosphoric acid water descaling powder according to claim 1, characterized in that: In the S2, the pre-heating treatment is to slowly heat the chemical reaction kettle to 90-100°C after the dripping of the hydroxyethylethylenediamine aqueous solution is completed.

4. The production process of the organic phosphoric acid water descaling powder according to claim 1, characterized in that: In S2, the formaldehyde dropping temperature is one of 100° C. and 103° C., and the formaldehyde dropping time is one of 120 min, 150 min, and 180 min.

5. The production process of the organic phosphoric acid water descaling powder according to claim 1, characterized in that: In S3, the heat preservation reflux treatment is to keep the chemical reaction kettle warm at a temperature of 100-110° C., and the heat preservation time ranges from 80 to 160 minutes.

6. The production process of the organic phosphoric acid water descaling powder according to claim 5, characterized in that: The insulation temperature of the chemical reactor is one of 102° C. or 105° C., and the insulation time is one of 100 min, 120 min or 150 min.

7. The production process of the organic phosphoric acid water descaling powder according to claim 1, characterized in that: In the S3, the concentration and heating treatment is to heat the chemical reactor to 115-140° C. and then start concentration, and concentrate to dryness to obtain a solid product.

8. The production process of the organic phosphoric acid water descaling powder according to claim 7, characterized in that: The concentration temperature of the chemical reactor is one of 118°C, 125°C, 130°C or 135°C.

9. The production process of the organic phosphoric acid water descaling powder according to claim 1, characterized in that: In S4, after the solid product is mixed with deionized water, activated carbon is added to filter to remove mechanical impurities and decolorize, and then water is added to adjust the content, and the product is cooled and discharged.

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