Rust remover for fuel gas pressure regulating box and preparation method of rust remover

Abstract

The invention relates to the technical field of rust remover production, in particular to a rust remover for a fuel gas pressure regulating box and a preparation method of the rust remover. The rust remover is prepared from the following raw materials in parts by weight: 20-30 parts of acryloyl isopropyl phosphonic acid, 4-6 parts of a composite surfactant, 10-12 parts of a synergistic auxiliary agent, 6-10 parts of a corrosion inhibitor, 8-10 parts of sodium gluconate, 3-5 parts of potassium thiocyanate, 6-8 parts of a synergistic filler and 25-35 parts of deionized water. The rust remover prepared by the preparation method disclosed by the invention has a remarkable rapid rust removal effect; the rust removal rate is excellent, and meanwhile, the influence on the surface of a treated part is avoided; therefore, the prepared rust remover has a wider market prospect and is more suitable for popularization.

Description

Technical Field

[0001] The invention relates to the technical field of rust remover production, in particular to a rust remover for a gas pressure regulating box and a preparation method thereof. Background Art

[0002] The gas pressure regulating box is an important component of the gas transmission and distribution system. It has been widely promoted and applied due to its compact structure, small footprint, investment savings, and easy installation and use.

[0003] The gas pressure regulating box is prone to corrosion in a humid air environment, and rust will form on the surface. This will not only affect the appearance of the gas pressure regulating box, but also its subsequent service life. However, the traditional rust remover has a very poor rust removal effect when there is oil on the metal surface. It is difficult to spread quickly and completely on the rust layer surface or rust stains, which affects the efficiency; at the same time, it is easy to cause damage to the gas pressure regulating box. Therefore, how to effectively provide rust removal for the gas pressure regulating box has become an important problem that needs to be solved urgently in my country's rust remover production industry.

[0004] Therefore, the present invention provides a rust remover for a gas pressure regulating box and a preparation method thereof, which are used to solve the above-mentioned related technical problems. Summary of the invention

[0005] The object of the present invention is to provide a rust remover for a gas pressure regulating box and a preparation method thereof. The rust remover prepared by the present invention not only has a significant rapid rust removal effect, but also has an excellent rust removal rate, and at the same time, will not affect the surface of the treated part.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The first aspect of the present invention provides a rust remover for a gas pressure regulating box, wherein the rust remover is made of the following raw materials in parts by weight: 20 to 30 parts of acryloyl isopropyl phosphonic acid, 4 to 6 parts of a composite surfactant, 10 to 12 parts of a synergistic aid, 6 to 10 parts of a corrosion inhibitor, 8 to 10 parts of sodium gluconate, 3 to 5 parts of potassium thiocyanate, 6 to 8 parts of a synergistic filler and 25 to 35 parts of deionized water.

[0008] The present invention is further configured as follows: the composite surfactant is prepared by mixing sodium N-lauroyl sarcosinate, disodium lauryl iminodiacetate, and sodium fatty acyl amino acid in a mass ratio of 1.2-1.4:0.2-0.4:1.

[0009] The present invention is further configured as follows: the corrosion inhibitor is selected from any one of hexamethylenetetramine, 2-methylphenylbenzoxazole, and rosin imidazoline ammonium salt.

[0010] The present invention is further configured as follows: the preparation process of the synergistic aid is as follows:

[0011] The mixed solution was stirred and heated to 120-150°C, and heated under reflux for 160-170 minutes;

[0012] After the reaction is completed, the reaction is continued for 12 to 14 minutes at 0.02 MPa, and then at normal pressure for 60 to 70 minutes;

[0013] The obtained reaction product is washed with ethanol for 5 to 6 times, and then placed in a constant temperature drying oven at 56 to 60° C. to dry for 40 to 46 minutes to obtain a synergistic auxiliary agent.

[0014] The present invention is further configured as follows: the mass ratio of tannic acid, polyethylene glycol and p-toluenesulfonic acid in the mixed solution is 1.6-1.8:1:0.3-0.4.

[0015] The present invention is further configured as follows: the preparation process of the synergistic filler is as follows:

[0016] The composite material is placed in a ball mill and ball-milled for 12 to 16 hours, and the obtained mixed powder is placed in a drying oven at 80 to 90° C. and dried for 8 to 10 hours to obtain a dry product;

[0017] The obtained dried product was placed in a sealed crucible, heated to 950°C at a rate of 5°C / min, and kept warm for 50-60min, then heated to 1100°C at a rate of 3°C / min, and kept warm for 3h to obtain a synergistic filler.

[0018] The present invention is further configured as follows: the composite material is formed by mixing α-alumina, aluminum fluoride and silicon dioxide in a mass ratio of 0.6 to 0.8: 0.2 to 0.5: 1.

[0019] The present invention is further configured as follows: the ball-to-material weight ratio of the ball mill is 6:1, the ball milling speed is 250 rpm, and the ball milling medium is anhydrous ethanol.

[0020] The second aspect of the present invention: also provides a method for preparing the above-mentioned rust remover for gas pressure regulating box, comprising the following steps:

[0021] Step 1, accurately weigh acryloyl isopropylphosphonic acid, composite surfactant, synergistic aid, corrosion inhibitor, sodium gluconate, potassium thiocyanate, synergistic filler and deionized water respectively and set aside;

[0022] Step 2: Mix acryloyl isopropylphosphonic acid, corrosion inhibitor, sodium gluconate, potassium thiocyanate and deionized water at 120-140 r / min for 20-30 min to obtain a first mixture;

[0023] Step 3, adding the composite surfactant, the synergistic additive and the synergistic filler to the premix, and then mixing for 12 to 15 minutes at 340 to 360 r / min to obtain a second mixture;

[0024] Step 4: After the second mixed material is discharged, it is successively inspected and measured and packaged to finally obtain a finished product of the rust remover for the gas pressure regulating box.

[0025] The present invention is further configured as follows: in the step three, before adding the synergistic aid to the premix, the synergistic aid is crushed and passed through a 80-100 mesh sieve.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The rust remover prepared by the present invention uses acrylyl isopropylphosphonic acid, composite surfactant, synergist, corrosion inhibitor, sodium gluconate, potassium thiocyanate, synergistic filler and deionized water as raw materials, and the synergist is crushed and sieved, and then acrylyl isopropylphosphonic acid, corrosion inhibitor, sodium gluconate, potassium thiocyanate and deionized water are mixed to obtain a first mixture, and then the composite surfactant, synergist and synergistic filler are added to the premix and mixed again to obtain a second mixture, and then the rust remover for gas pressure regulating box is obtained through inspection and metering packaging steps in sequence; the prepared rust remover not only has a significant and rapid rust removal effect; but also has an excellent rust removal rate, and at the same time, will not affect the surface of the treated parts. This shows that the rust remover prepared by the present invention has a broader market prospect and is more suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a statistical diagram of the rust removal rate of the present invention;

[0030] Figure 2 It is a statistical diagram of the rust removal rate of the present invention. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0032] Example 1

[0033] The present embodiment provides a rust remover for a gas pressure regulating box, wherein the rust remover is made of the following raw materials in parts by weight: 20 parts of acrylyl isopropyl phosphonic acid, 4 parts of a composite surfactant, 10 parts of a synergistic aid, 6 parts of a corrosion inhibitor, 8 parts of sodium gluconate, 3 parts of potassium thiocyanate, 6 parts of a synergistic filler and 25 parts of deionized water.

[0034] The composite surfactant is prepared by mixing sodium N-lauroyl sarcosinate, disodium lauryl iminodiacetate and sodium fatty acyl amino acid in a mass ratio of 1.2:0.2:1.

[0035] Hexamethylenetetramine was selected as the corrosion inhibitor.

[0036] The preparation process of the synergist is as follows:

[0037] The mixture was stirred and heated to 120°C, and heated under reflux for 160 min;

[0038] After the reaction was completed, the reaction was continued for 12 min at 0.02 MPa, and then for 60 min at normal pressure;

[0039] The obtained reaction product was washed with ethanol five times, and then dried in a constant temperature drying oven at 56° C. for 40 min to obtain a synergistic additive.

[0040] Furthermore, the mass ratio of tannic acid, polyethylene glycol and p-toluenesulfonic acid in the mixed solution is 1.6:1:0.3.

[0041] In addition, the preparation process of the synergistic filler is as follows:

[0042] The composite material was placed in a ball mill for 12 hours, and the obtained mixed powder was placed in a drying oven at 80°C for 8 hours to obtain a dry product;

[0043] The obtained dried product was placed in a sealed crucible, heated to 950°C at a rate of 5°C / min and kept at this temperature for 50 minutes, then heated to 1100°C at a rate of 3°C / min and kept at this temperature for 3 hours to obtain a synergistic filler.

[0044] The composite material is prepared by mixing α-alumina, aluminum fluoride and silicon dioxide in a mass ratio of 0.6:0.2:1.

[0045] Furthermore, the ball-to-material weight ratio of the ball mill is 6:1, the ball milling speed is 250 rpm, and the ball milling medium is anhydrous ethanol.

[0046] In addition, this embodiment also provides a method for preparing the above-mentioned rust remover for the gas pressure regulating box, comprising the following steps:

[0047] Step 1: Accurately weigh acryloyl isopropylphosphonic acid, composite surfactant, synergistic additive, corrosion inhibitor, sodium gluconate, potassium thiocyanate, synergistic filler and deionized water respectively and set aside.

[0048] Step 2: Mix acryloyl isopropylphosphonic acid, corrosion inhibitor, sodium gluconate, potassium thiocyanate and deionized water at 120 r / min for 20 min to obtain a first mixture.

[0049] Step 3: Add the composite surfactant, synergistic additive and synergistic filler to the premix, and then mix at 3400 r / min for 12 minutes to obtain a second mixture.

[0050] The method further includes crushing the synergistic aid and passing it through an 80-mesh sieve before adding the synergistic aid to the premix.

[0051] Step 4: After the second mixed material is discharged, it is successively inspected and measured and packaged to finally obtain a finished product of the rust remover for the gas pressure regulating box.

[0052] Example 2

[0053] The present embodiment provides a rust remover for a gas pressure regulating box, wherein the rust remover is made of the following raw materials in parts by weight: 25 parts of acrylisopropylphosphonic acid, 5 parts of a composite surfactant, 11 parts of a synergistic aid, 8 parts of a corrosion inhibitor, 9 parts of sodium gluconate, 4 parts of potassium thiocyanate, 7 parts of a synergistic filler and 30 parts of deionized water.

[0054] The composite surfactant is prepared by mixing sodium N-lauroyl sarcosinate, disodium lauryl iminodiacetate and sodium fatty acyl amino acid in a mass ratio of 1.3:0.3:1.

[0055] The corrosion inhibitor is 2-tolylbenzoxazole.

[0056] The preparation process of the synergist is as follows:

[0057] The mixture was stirred and heated to 135°C, and heated under reflux for 165 min;

[0058] After the reaction was completed, the reaction was continued for 13 min at 0.02 MPa, and then for 65 min at normal pressure;

[0059] The obtained reaction product was washed with ethanol for 6 times, and then dried in a constant temperature drying oven at 58° C. for 43 min to obtain a synergistic additive.

[0060] Furthermore, the mass ratio of tannic acid, polyethylene glycol and p-toluenesulfonic acid in the mixed solution is 1.7:1:0.4.

[0061] In addition, the preparation process of the synergistic filler is as follows:

[0062] The composite material was placed in a ball mill for 14 hours, and the obtained mixed powder was placed in a drying oven at 85°C for 9 hours to obtain a dry product;

[0063] The obtained dried product was placed in a sealed crucible, heated to 950°C at a rate of 5°C / min and kept at this temperature for 55 minutes, then heated to 1100°C at a rate of 3°C / min and kept at this temperature for 3 hours to obtain a synergistic filler.

[0064] The composite material is prepared by mixing α-alumina, aluminum fluoride and silicon dioxide in a mass ratio of 0.7:0.3:1.

[0065] Furthermore, the ball-to-material weight ratio of the ball mill is 6:1, the ball milling speed is 250 rpm, and the ball milling medium is anhydrous ethanol.

[0066] In addition, this embodiment also provides a method for preparing the above-mentioned rust remover for the gas pressure regulating box, comprising the following steps:

[0067] Step 1: Accurately weigh acryloyl isopropylphosphonic acid, composite surfactant, synergistic additive, corrosion inhibitor, sodium gluconate, potassium thiocyanate, synergistic filler and deionized water respectively and set aside.

[0068] Step 2: Mix acryloyl isopropylphosphonic acid, corrosion inhibitor, sodium gluconate, potassium thiocyanate and deionized water at 130 r / min for 25 min to obtain a first mixture.

[0069] Step 3: Add the composite surfactant, synergistic additive and synergistic filler to the premix, and then mix at 350 r / min for 13 minutes to obtain a second mixture.

[0070] The method further includes crushing the synergistic aid and passing it through a sieve of 80-100 meshes before adding the synergistic aid to the premix.

[0071] Step 4: After the second mixed material is discharged, it is successively inspected and measured and packaged to finally obtain a finished product of the rust remover for the gas pressure regulating box.

[0072] Example 3

[0073] The present embodiment provides a rust remover for a gas pressure regulating box, wherein the rust remover is made of the following raw materials in parts by weight: 30 parts of acrylisopropylphosphonic acid, 6 parts of a composite surfactant, 12 parts of a synergistic aid, 10 parts of a corrosion inhibitor, 10 parts of sodium gluconate, 5 parts of potassium thiocyanate, 8 parts of a synergistic filler and 35 parts of deionized water.

[0074] The composite surfactant is prepared by mixing sodium N-lauroyl sarcosinate, disodium lauryl iminodiacetate and sodium fatty acyl amino acid in a mass ratio of 1.4:0.4:1.

[0075] Hexamethylenetetramine was selected as the corrosion inhibitor.

[0076] The preparation process of the synergist is as follows:

[0077] The mixture was stirred and heated to 150°C, and heated under reflux for 170 min;

[0078] After the reaction was completed, the reaction was continued for 14 min at 0.02 MPa, and then for 70 min at normal pressure;

[0079] The obtained reaction product was washed with ethanol for 6 times, and then dried in a constant temperature drying oven at 60° C. for 46 min to obtain a synergistic aid.

[0080] Furthermore, the mass ratio of tannic acid, polyethylene glycol and p-toluenesulfonic acid in the mixed solution is 1.8:1:0.4.

[0081] In addition, the preparation process of the synergistic filler is as follows:

[0082] The composite material was placed in a ball mill for 16 hours, and the obtained mixed powder was placed in a drying oven at 90°C for 10 hours to obtain a dry product;

[0083] The obtained dried product was placed in a sealed crucible, heated to 950°C at a rate of 5°C / min and kept at this temperature for 60 minutes, then heated to 1100°C at a rate of 3°C / min and kept at this temperature for 3 hours to obtain a synergistic filler.

[0084] The composite material is prepared by mixing α-alumina, aluminum fluoride and silicon dioxide in a mass ratio of 0.8:0.5:1.

[0085] Furthermore, the ball-to-material weight ratio of the ball mill is 6:1, the ball milling speed is 250 rpm, and the ball milling medium is anhydrous ethanol.

[0086] In addition, this embodiment also provides a method for preparing the above-mentioned rust remover for the gas pressure regulating box, comprising the following steps:

[0087] Step 1: Accurately weigh acryloyl isopropylphosphonic acid, composite surfactant, synergistic additive, corrosion inhibitor, sodium gluconate, potassium thiocyanate, synergistic filler and deionized water respectively and set aside.

[0088] Step 2: Mix acryloyl isopropylphosphonic acid, corrosion inhibitor, sodium gluconate, potassium thiocyanate and deionized water at 140 r / min for 30 minutes to obtain a first mixture.

[0089] Step 3: Add the composite surfactant, synergistic additive and synergistic filler to the premix, and then mix at 360 r / min for 15 minutes to obtain a second mixture.

[0090] The method further comprises crushing the synergistic aid and passing the synergistic aid through a 100-mesh sieve before adding the synergistic aid to the premix.

[0091] Step 4: After the second mixed material is discharged, it is successively inspected and measured and packaged to finally obtain a finished product of the rust remover for the gas pressure regulating box.

[0092] Comparative Example 1: The preparation method of the rust remover provided in this example and the specific ratio of the raw materials are substantially the same as those in Example 1, the main difference being that this example does not contain a synergistic aid.

[0093] Comparative Example 2: The preparation method of the rust remover provided in this embodiment and the specific ratio of the raw materials are substantially the same as those in Example 1, the main difference being that this embodiment does not contain a synergistic filler.

[0094] Comparative Example 3: The preparation method of the rust remover provided in this embodiment and the specific ratio of the raw materials are substantially the same as those in Example 1, the main difference being that the composite material in this embodiment does not contain aluminum fluoride and silicon dioxide;

[0095] Comparative Example 4: The preparation method of the rust remover and the specific ratio of raw materials provided in this embodiment are substantially the same as those in Example 1, with the main difference being that the composite material in this embodiment is directly heated to 1100° C. and kept warm for 4 hours during the preparation process.

[0096] Effect test

[0097] The rust removers prepared by Examples 1 to 3 of the present invention are respectively recorded as Experimental Examples 1 to 3; the rust removers prepared by Comparative Examples 1 to 4 are recorded as Comparative Examples 1 to 4; and then the performance of the rust remover samples of equal amounts in each group are tested.

[0098] Test 1. Rust removal efficiency test and result analysis:

[0099] Select 7 gas pressure regulating box plates of 50mm*50mm*3mm (rust grade reaches D grade) and use different groups of rust removers to remove rust. The process is as follows:

[0100] Weigh the mass of the corroded box plate, then immerse the corroded box plate in the rust remover at room temperature for 1 hour, and shake the corroded box plate once every 2 minutes. After washing and drying the immersed corroded box plate, weigh its mass, and use the weight loss method to calculate the rust removal rate of the rust remover. The calculation formula is: In the formula, m1 is the mass of the corroded box plate before rust removal, m2 is the mass of the corroded box plate after rust removal, s is the surface area of ​​the derusted steel plate, and t is the derusting time. The relevant data are recorded in Table 1.

[0101] Table 1: Test data record table

[0102] Group <![CDATA[Rust removal rate (g / h / m -2 )]]> Example 1 Group 0.25 Example 2 Group 0.24 Example 3 Group 0.25 Comparison group 1 0.12 Comparison of 2 groups 0.10 Comparison of 3 groups 0.14 Comparison of 4 groups 0.16

[0103] From Table 1 and Figure 1 It can be seen that compared with the control group, the rust removers of Examples 1 to 3 can remove rust from the gas pressure regulating box; in terms of the rust removal rate index, the rust removal rate of the rust removers of Examples 1 to 3 can reach 0.25g / h / m -2 , 0.24g / h / m -2 , 0.25g / h / m -2 The above results show that the rust removers of Examples 1 to 3 have a significant and rapid rust removal effect.

[0104] In order to verify the effects of the various components of the additive, experiments of Comparative Examples 1 to 4 were set up.

[0105] The main difference between the raw material ratio of the rust remover of comparative example 1 and example 1 is that the rust removal rate of comparative example 1 is reduced by 0.13 g / h / m -2 The results show that the functional additives play a role in improving the rust removal rate of the rust remover.

[0106] The rust remover in Comparative Example 2 differs from that in Example 1 in that it does not contain a synergistic filler. The test results show that the rust removal rate of Comparative Example 2 is reduced by 0.15 g / h / m compared with that of Example 1. -2 The results show that the synergistic filler has an effect on improving the rust removal rate of the rust remover.

[0107] The difference between the rust remover in Comparative Example 3 and Example 1 is that the composite material does not contain aluminum fluoride and silicon dioxide. The test results show that the rust removal rate of Comparative Example 3 is reduced by 0.11 g / h / m compared with that of Example 1. -2 The results show that aluminum fluoride and silicon dioxide in the composite material play a certain role in improving the rust removal rate of the rust remover.

[0108] The difference between the rust remover in comparative example 4 and that in example 1 is that the composite material is directly heated to 1100°C and kept warm for 4 hours during preparation. The test results show that the rust removal rate of the rust remover in comparative example 4 is reduced by 0.09 g / h / m compared with that in example 1. -2 The results show that the temperature design during the preparation of the composite material has an impact on improving the rust removal rate of the rust remover.

[0109] Test 2: Rust removal effect test and result analysis:

[0110] Add the rust remover into the rust removal tank, and immerse the plate to be cleaned (the corroded box plate of the gas pressure regulating box) into the rust remover, and treat it for 180s at room temperature and 40kHz ultrasonic wave environment; then, take out the rust-removed plate from the rust removal tank and immerse it in the clean water in the rinsing tank for rinsing. After rinsing, take out the plate from the rinsing tank to complete the rust removal. Record the relevant data in Table 2.

[0111] Table 2: Test data record table

[0112]

[0113]

[0114] From Table 2 and Figure 2 It can be seen that the above results show that the rust removers of Examples 1 to 3 have excellent rust removal rates and will not affect the surface of the treated parts.

[0115] In order to verify the effects of the various components of the additive, experiments of Comparative Examples 1 to 4 were set up.

[0116] The main difference between the raw material ratio of the rust remover of Comparative Example 1 and Example 1 is that the functional additive is not included. Compared with Example 1, the rust removal rate of Comparative Example 1 was reduced by 15%. This result shows that the functional additive has an effect on the rust removal rate.

[0117] The rust remover in Comparative Example 2 differs from that in Example 1 in that it does not contain a synergistic filler. The test results show that the rust removal rate of Comparative Example 2 is reduced by 17% compared with that of Example 1. This result proves that the synergistic filler plays a role in the rust removal rate.

[0118] The rust remover in Comparative Example 3 is different from that in Example 1 in that the composite material does not contain aluminum fluoride and silicon dioxide. The test results show that the rust removal rate of the comparative example 3 group is reduced by 13% compared with the group of Example 1. This result shows that aluminum fluoride and silicon dioxide in the composite material have a certain effect on the rust removal rate.

[0119] The difference between the rust remover in comparative example 4 and that in example 1 is that the temperature is directly 1100°C and kept at this temperature for 4 hours during the preparation of the composite material. The test results show that the rust removal rate of the rust remover in comparative example 4 is reduced by 12% compared with that in example 1. This result shows that the temperature design during the preparation of the composite material has an impact on the rust removal rate.

[0120] From the above, it can be seen that the rust remover prepared by the present invention not only has a significant rapid rust removal effect, but also has an excellent rust removal rate, and at the same time, will not affect the surface of the treated part. This shows that the rust remover produced by the present invention has a broader market prospect and is more suitable for promotion.

[0121] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0122] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rust remover for a gas pressure regulating box, characterized in that: The rust remover is prepared from the following raw materials in parts by weight: 20 to 30 parts of acryl isopropyl phosphonic acid, 4 to 6 parts of composite surfactant, 10 to 12 parts of synergistic aid, 6 to 10 parts of corrosion inhibitor, 8 to 10 parts of sodium gluconate, 3 to 5 parts of potassium thiocyanate, 6 to 8 parts of synergistic filler and 25 to 35 parts of deionized water.

2. A rust remover for a gas pressure regulating box according to claim 1, characterized in that: The composite surfactant is prepared by mixing sodium N-lauroyl sarcosinate, disodium lauryl iminodiacetate and sodium fatty acyl amino acid in a mass ratio of 1.2-1.4:0.2-0.4:

1.

3. A rust remover for a gas pressure regulating box according to claim 1, characterized in that: The corrosion inhibitor is selected from any one of hexamethylenetetramine, 2-methylphenylbenzoxazole, and rosin imidazoline ammonium salt.

4. A rust remover for a gas pressure regulating box according to claim 1, characterized in that: The preparation process of the synergistic aid is as follows: The mixed solution was stirred and heated to 120-150°C, and heated under reflux for 160-170 minutes; After the reaction is completed, the reaction is continued for 12 to 14 minutes at 0.02 MPa, and then at normal pressure for 60 to 70 minutes; The obtained reaction product is washed with ethanol for 5 to 6 times, and then placed in a constant temperature drying oven at 56 to 60° C. to dry for 40 to 46 minutes to obtain a synergistic auxiliary agent.

5. A rust remover for a gas pressure regulating box according to claim 4, characterized in that: The mass ratio of tannic acid, polyethylene glycol and p-toluenesulfonic acid in the mixed solution is 1.6-1.8:1:0.3-0.

4.

6. A rust remover for a gas pressure regulating box according to claim 1, characterized in that: The preparation process of the synergistic filler is as follows: The composite material is placed in a ball mill for 12 to 16 hours, and the obtained mixed powder is placed in a drying oven at 80 to 90° C. and dried for 8 to 10 hours to obtain a dry product; The obtained dried product was placed in a sealed crucible, heated to 950°C at a rate of 5°C / min, and kept warm for 50-60min, then heated to 1100°C at a rate of 3°C / min, and kept warm for 3h to obtain a synergistic filler.

7. A rust remover for a gas pressure regulating box according to claim 6, characterized in that: The composite material is prepared by mixing α-alumina, aluminum fluoride and silicon dioxide in a mass ratio of 0.6-0.8:0.2-0.5:

1.

8. A rust remover for a gas pressure regulating box according to claim 6, characterized in that: The ball-to-material weight ratio of the ball mill is 6:1, the ball milling speed is 250 rpm, and the ball milling medium is anhydrous ethanol.

9. A method for preparing a rust remover for a gas pressure regulating box according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1, accurately weigh acryloyl isopropylphosphonic acid, composite surfactant, synergistic aid, corrosion inhibitor, sodium gluconate, potassium thiocyanate, synergistic filler and deionized water respectively and set aside; Step 2: Mix acryloyl isopropylphosphonic acid, corrosion inhibitor, sodium gluconate, potassium thiocyanate and deionized water at 120-140 r / min for 20-30 min to obtain a first mixture; Step 3, adding the composite surfactant, the synergistic additive and the synergistic filler to the premix, and then mixing for 12 to 15 minutes at 340 to 360 r / min to obtain a second mixture; Step 4: After the second mixed material is discharged, it is successively inspected and packaged to finally obtain a finished product of the rust remover for the gas pressure regulating box.

10. The method for preparing a rust remover for a gas pressure regulating box according to claim 9, characterized in that: In the step three, the synergist is further comprised of crushing the synergist and passing it through a 80-100 mesh sieve before adding the synergist to the premix.

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