CN102162105A - Boiler pipeline descaling agent and preparation method thereof - Google Patents
Boiler pipeline descaling agent and preparation method thereof Download PDFInfo
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- CN102162105A CN102162105A CN201110080061XA CN201110080061A CN102162105A CN 102162105 A CN102162105 A CN 102162105A CN 201110080061X A CN201110080061X A CN 201110080061XA CN 201110080061 A CN201110080061 A CN 201110080061A CN 102162105 A CN102162105 A CN 102162105A
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Abstract
The invention belongs to the technical field of chemical cleaning of boiler pipelines, and particularly discloses a boiler pipeline descaling agent and a preparation method thereof. The descaling agent mainly consists of the following components in percentage by weight: 12 to 15 percent of aminosulfonic acid, 3 to 6 percent of hydrofluoric acid, 3 to 5 percent of acid washing corrosion inhibitor and the balance of water. The method comprises the following steps of: (1) taking water, adding the aminosulfonic acid and the hydrofluoric acid, and then stirring the solution uniformly; (2) adding the acid washing corrosion inhibitor into the solution of the (1), and then stirring the solution uniformly; and (3) adding water into the solution of the (2) till the total volume meets the requirement of 100 percent, and stirring the solution uniformly to obtain a finished product. Proved by a large amount of scientific experiments and years of internal practice application, the descaling agent not only has good cleaning and descaling effects, but also overcomes the defect of metal corrosion.
Description
Technical field
The invention belongs to the chemical cleaning technique field of boiler tubing scale removal, be specifically related to a kind of boiler tubing scale remover and preparation method thereof.
Background technology
Boiler is being undertaken to the user effects such as steam, hot water is being provided, to guarantee the demand of heat just commonly used such as user's production, heating, bathing.Although its shape difference of different boilers, its structure material mainly is made up of carbon steel.
Because water quality, boiler can produce dirts such as incrustation scale, rust deposite through after the life-time service in boiler inner wall and smoke pipe, the cold water wall pipeline because the generation of dirt, make the boiler heat-transfer variation, render a service and reduce and do not reach the nominal working efficiency; Because the thermal conduction variation also can cause metal overheated, under the boiler pressure effect, stove internal flue, cold water wall pipeline produce obstruction, bulge, perforation, even the accident of blasting in addition; The thermal conduction variation makes that fuel consumption increases, working cost rises, boiler life shortens.Therefore, boiler tubing all should in time clean scrubbing after using for a long time, heats to recover it, heat transmission function.
And the cleaning products that uses at present on the market is inorganic acid or highly basic basically, make inwall, the smoke pipe of boiler easily and be attached thereto the pipeline that connects and produce acidity or caustic corrosion, cause boiler wall, smoke pipe and cold water wall duct thickness to reduce, occur phenomenons such as pitting corrosion, cause boiler to use even to scrap.
Summary of the invention
The object of the present invention is to provide a kind of boiler tubing scale remover with the scale removal scrubbing is effective, corrodibility is little and preparation method thereof that cleans.
For achieving the above object, the technical scheme taked of the present invention is as follows:
A kind of boiler tubing scale remover, mainly be made up of the each component of following weight percent: thionamic acid 12-15%, hydrofluoric acid 3-6%, restrainer 3-5%, surplus is a water.Thionamic acid, hydrofluoric acid mainly play scale removal, scrubbing, and minimum to the corrodibility of metallic iron and respective alloy; Add restrainer, in efficient scale removal, scrubbing, can prevent the metal corrosion of Carbon Steel effectively.Restrainer can be selected in restrainer commonly used as well known to those skilled in the art, such as being urotropine (hexamethylenetetramine), Lan-826, Lan-9001 etc.
Further, on above-mentioned basis, boiler tubing scale remover of the present invention can also include poly alkyl alcohol oxyalkyl ether (SF) or the ethoxylated alkyl sulfate (AES) of weight percentage 0.1-0.3%.SF or AES, because it has good penetration, emulsification and washing performance, and foam is low, can increase the speed of scale removal, degreasing.
Further again, on above-mentioned basis, boiler tubing scale remover of the present invention can also include the polyoxyethylene octylphenol ether (OP) of weight percentage 0.2-0.5%.Polyoxyethylene octylphenol ether can (such as OP-7, OP-8, OP-9, OP-10, OP-11) be selected in polyoxyethylene octylphenol ether specification series with wetting, diffusion commonly used as well known to those skilled in the art, the preferred OP-10 of the present invention is so that increase the homogeneity of scale removal, degreasing.
Further, on above-mentioned basis, boiler tubing scale remover of the present invention can also include the zinc sulfate of weight percentage 0.2-0.5%.Zinc sulfate can form protective membrane to the metallic surface after cleaning.
A kind of preparation method of boiler tubing scale remover, at first measure the each component of following weight percent: thionamic acid 12-15%, hydrofluoric acid 3-6%, restrainer 3-5%, surplus is a water, preparation process is as follows then:
(1), get portion water, add thionamic acid and hydrofluoric acid, stir after adding (8-10min);
(2), in (1), add restrainer, add back restir evenly (8-10min);
(3), in (2), add water and satisfy 100% requirement, stir (8-10min) gets product.
Further, step (2) afterwards, step (3) sets up a step before: in (2), add poly alkyl alcohol oxyalkyl ether or the ethoxylated alkyl sulfate of weight percentage 0.1-0.3%, fully stir until solid particulate matter molten intact till.
Further again, set up in the step, after adding poly alkyl alcohol oxyalkyl ether or ethoxylated alkyl sulfate, add the polyoxyethylene octylphenol ether of weight percentage 0.2-0.5% again, fully stir until solid particulate matter molten intact till.
Further, set up in the step, before adding poly alkyl alcohol oxyalkyl ether or ethoxylated alkyl sulfate, add the zinc sulfate of weight percentage 0.2-0.5% earlier.
Preferably, in the step (1), add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively; In the step (2), add restrainer under the normal temperature while stirring.
Preferably, in the step (1), add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively; In the step (2), add restrainer under the normal temperature while stirring; Set up in the step, earlier (2) be heated to 50-60 ℃, add each component more successively, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature.
The scale remover scope of application of the present invention: be applicable to the dirt that cleans in all kinds of boilers or the circulating water pipeline.
Scale remover of the present invention is suitable for dirty type: the dirt of cleaning is mainly incrustation scale, grease and other dirt of boiler or circulating water pipeline inside.
Scale remover technical indicator of the present invention:
(1) outward appearance: colourless or filbert liquid;
(2) pH value: the 1:9(volume ratio of scale remover of the present invention) water diluent, its pH≤1.0;
(3) performance: dirt is cleaned rate 〉=97%, to metal corrosion of carbon steel rate≤0.3g/m
2H(1:9 volume ratio water diluent);
(4) deposit: finished product vinyon container package, half a year staging life.
Scale remover of the present invention is through a large amount of scientific experimentations and the inside application in practice in several years, not only cleans, the scrubbing effect is better, and overcome the drawback of corrosion of carbon steel, and its beneficial effect is specific as follows:
(1) efficient: scale removal, degrease thoroughly, the metallic surface can cover the zinc salt protective membrane of the anti-secondary corrosion of one deck after the scrubbing;
(2) quick: scavenging period is short, and general normal temperature wash cycles only needs 8-10h, if only need 4-5h to get final product in the time of 60 ℃;
(3) safety: less to the metal corrosion of carbon steel, this product is nontoxic, tasteless, nonflammable, non-explosive;
(4) strong osmotic and diffusion are arranged, can remove the dirt of boiler or circulating water pipeline inside fast.
Description of drawings
Fig. 1 is the corrosion rate tester for testing, wherein, and 1-turning axle, 2-temperature controller, 3-temperature probe, 4-electric heater, 5-thermostat water bath, 6-test piece stationary installation, 7-test glass, 8-test piece, 9-thermometer.
Embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is done into a ground and introduce in detail, but protection scope of the present invention is not limited thereto:
In following examples, except thionamic acid and hydrofluoric acid need be scaled to the pure consumption required for the present invention according to actual purity (thionamic acid) and concentration (hydrofluoric acid), other component is bought after the salable product (no matter being solid or liquid) promptly can directly add by consumption required for the present invention from the market and is used.
Embodiment 1
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 12kg, hydrofluoric acid 3kg, Lan-826 3kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (8min);
(2) in (1), add Lan-826 under the normal temperature while stirring, add back restir evenly (8min);
(3) in (2), add water and satisfy 100% requirement, stir (8min) gets product.
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 14kg, hydrofluoric acid 5kg, Lan-9001 4kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (9min);
(2) in (1), add Lan-9001 under the normal temperature while stirring, add back restir evenly (9min);
(3) in (2), add water and satisfy 100% requirement, stir (9min) gets product.
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 15kg, hydrofluoric acid 6kg, urotropine 5kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (10min);
(2) in (1), add urotropine under the normal temperature while stirring, add back restir evenly (10min);
(3) in (2), add water and satisfy 100% requirement, stir (10min) gets product.
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 12kg, hydrofluoric acid 6kg, urotropine 5kg, SF 0.1kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (8min);
(2) in (1), add urotropine under the normal temperature while stirring, add back restir evenly (8min);
(3) earlier (2) are heated to 50 ℃, add SF again, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (8min), gets product.
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 13kg, hydrofluoric acid 4kg, Lan-9001 3kg, AES 0.2kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (9min);
(2) in (1), add Lan-9001 under the normal temperature while stirring, add back restir evenly (9min);
(3) earlier (2) are heated to 55 ℃, add AES again, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (9min), gets product.
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 15kg, hydrofluoric acid 3kg, Lan-826 4kg, SF 0.3kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (10min);
(2) in (1), add Lan-826 under the normal temperature while stirring, add back restir evenly (10min);
(3) earlier (2) are heated to 60 ℃, add SF again, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (10min), gets product.
Embodiment 7
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 14kg, hydrofluoric acid 4kg, urotropine 5kg, AES 0.1kg, OP-7 0.2kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (8min);
(2) in (1), add urotropine under the normal temperature while stirring, add back restir evenly (8min);
(3) earlier (2) are heated to 50 ℃, add AES, OP-7 more successively, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (8min), gets product.
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 15kg, hydrofluoric acid 3kg, Lan-826 4kg, SF 0.3kg, OP-8 0.5kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (9min);
(2) in (1), add Lan-826 under the normal temperature while stirring, add back restir evenly (9min);
(3) earlier (2) are heated to 55 ℃, add SF, OP-8 more successively, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (9min), gets product.
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 12kg, hydrofluoric acid 6kg, Lan-9001 3kg, AES 0.2kg, OP-9 0.4kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (10min);
(2) in (1), add Lan-9001 under the normal temperature while stirring, add back restir evenly (10min);
(3) earlier (2) are heated to 60 ℃, add AES, OP-9 more successively, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (10min), gets product.
Embodiment 10
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 15kg, hydrofluoric acid 4kg, Lan-826 4kg, SF 0.3kg, OP-10 0.5kg, zinc sulfate 0.6kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (8min);
(2) in (1), add Lan-826 under the normal temperature while stirring, add back restir evenly (8min);
(3) earlier (2) are heated to 50 ℃, add zinc sulfate, SF, OP-10 more successively, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (8min), gets product.
Embodiment 11
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 14kg, hydrofluoric acid 6kg, urotropine 5kg, AES 0.2kg, OP-11 0.3kg, zinc sulfate 0.3kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (9min);
(2) in (1), add urotropine under the normal temperature while stirring, add back restir evenly (9min);
(3) earlier (2) are heated to 55 ℃, add zinc sulfate, AES, OP-11 more successively, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (9min), gets product.
Embodiment 12
The boiler tubing scale remover of 100kg, be made up of the each component of following weight: thionamic acid 12kg, hydrofluoric acid 3kg, Lan-9001 3kg, SF 0.1kg, OP-10 0.2kg, zinc sulfate 0.4kg, surplus is a water.
Preparation process is as follows:
(1) gets portion water, add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively, stir after adding (10min);
(2) in (1), add Lan-9001 under the normal temperature while stirring, add back restir evenly (10min);
(3) earlier (2) are heated to 60 ℃, add zinc sulfate, SF, OP-10 more successively, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature;
(4) slowly (in case liquid splash) added water and arrived satisfied 100% requirement in (3), stirs after adding (10min), gets product.
With scale remover 1:9(volume ratio of the present invention) water diluent carries out following every performance test.
The value testing experiment
With the water diluent of pH test paper mensuration embodiment 1-12 gained scale remover of the present invention, the result shows its pH≤1.0.
The corrosion rate testing experiment
One, test apparatus:
1, analytical balance: BT224S electronic analytical balance;
2, corrosion rate tester: RCC-I rotary hanging plate corrosion rate tester;
3, moisture eliminator: glass moisture eliminator.
Two, reference standard
1, GB/T 18175-2000 " mensuration of water conditioner corrosion inhibition---rotary hanging plate method ";
2, HG/T 2387-2007 " industrial equipments matting quality standard ";
3, TSG G5003-2008 " boiler matting rule ".
Three, experimental procedure
With reference to the method for GB/T 18175-2000 " mensuration of water conditioner corrosion inhibition---rotary hanging plate method " regulation, tester for testing is a rotary hanging plate corrosion rate tester, and its structure as shown in drawings, be conventional structure, repeat no more, wherein, 1-turning axle, 2-temperature controller, 3-temperature probe, 4-electric heater, 5-electronic thermostatic water-bath, 6-test piece stationary installation, 7-test glass, 8-test piece, 9-thermometer, concrete testing sequence is as follows:
The carbon steel A that 1, will meet HG/T3523-2008
3 Standard test piece 8 filter paper wiped clean, in acetone and dehydrated alcohol, clean respectively then with absorbent cotton, per 10 test piece 8 usefulness are no less than the 50mL mentioned reagent, place on the clean filter paper, blot, place more than the moisture eliminator 4h with filter paper, weighing on analytical balance, be accurate to 0.0001g, be stored in after the number record in the moisture eliminator, stand-by;
2,, in two 2000mL test glass 7, add clean-out system of the present invention respectively by the 1:9(volume ratio by test requirements document) each 1000mL of distilled water diluting liquid after the dilution, be accurate to 0.1mL, draw groove at test glass 7 outer walls and the same level of liquid level place; Test glass 7 is placed electronic thermostatic water-bath 5, continuous bubbling air in test glass 7, the temperature of setting temperature controller 2 simultaneously is 35 ℃, temperature controller 2 is connected with temperature probe 3 and electric heater 4, and measures the water-bath actual temperatures with thermometer 9;
When 3, treating that the water-bath actual temperature reaches 35 ℃ of assigned temperatures, hang on turning axle 1 incidental test piece stationary installation 6 by number order and corresponding test with metal standard test piece 8, the distance of liquid level keeps 3cm in test piece 8 upper ends and the test glass 7, actuating motor, test piece 8 is rotated by the 100r/min speed of rotation, and pick up counting;
4, test glass 7 is not added a cover, and makes the test solution spontaneous evaporation, adds distilled water once every 2h, makes liquid level remain on the scale marks place;
5, when reach designated value 24h runtime, axle 1 running of stopping the rotation is taken out test piece 8 and is carried out outward appearance observation and record;
6, standard test piece 8 usefulness hairbrush are scrubbed clean, use distilled water immersion 5min then, take out, blot with filter paper, soak about 3min in dehydrated alcohol, blot with clean filter paper, place more than the moisture eliminator 4h, weighing on analytical balance is accurate to 0.0001g;
7, do the blank corrosion test of distilled water of the standard test piece 8 of metal carbon steel simultaneously.
Four, result's expression and calculating
With g/m
2The rate of metal corrosion K that h represents is calculated as follows:
1, calculation formula: K=(W
0-W)/St
In the formula:
The erosion rate of K---standard test piece, g/m
2H;
W---test piece mass loss, g;
W
0---the mass loss of test piece blank test, g;
The total surface area of S---test piece, m
2
The corrosion experiment time of t---test piece, h.
2, test data and counting statistics write down as following table:
The metal carbon steel
| ? | W 0（g） | W（g） | S（m 2） | t（h） | K（g/m 2·h） |
| Embodiment 1 | 19.3885 | 19.3695 | 0.0028 | 24 | 0.2827 |
| |
19.3892 | 19.3705 | 0.0028 | 24 | 0.2783 |
| |
19.3887 | 19.3686 | 0.0028 | 24 | 0.2991 |
| |
19.3892 | 19.3694 | 0.0028 | 24 | 0.2946 |
| |
19.3893 | 19.3709 | 0.0028 | 24 | 0.2738 |
| |
19.3892 | 19.3700 | 0.0028 | 24 | 0.2857 |
| Embodiment 7 | 19.3885 | 19.3688 | 0.0028 | 24 | 0.2932 |
| |
19.3888 | 19.3697 | 0.0028 | 24 | 0.2842 |
| |
19.3895 | 19.3711 | 0.0028 | 24 | 0.2738 |
| Embodiment 10 | 19.3884 | 19.3690 | 0.0028 | 24 | 0.2886 |
| Embodiment 11 | 19.3891 | 19.3691 | 0.0028 | 24 | 0.2976 |
| Embodiment 12 | 19.3887 | 19.3702 | 0.0028 | 24 | 0.2753 |
From above-mentioned statistics as can be known: water diluent scale remover 1:9(volume ratio of the present invention) is to the corrosion rate≤0.3g/m of metal carbon steel standard test piece
2H is much smaller than the 6g/m of the middle regulation of HG/T 2387-2007 " industrial equipments matting quality standard "
2The 8g/m of regulation among h and the TSG G5003-2008 " boiler matting rule "
2The standard of h.
Dirt is cleaned the rate testing experiment
For the descale effect of scale remover of the present invention is described better, has carried out following dirt by HG/T2387-2007 " industrial equipments matting quality standard " especially and cleaned the rate testing experiment.
One, test procedure
(1) in the equipment of dirt is arranged, specifies and calculates the area S that is wherein covered by dirt
0(mm
2);
(2) with boiler tubing scale remover 1:9(volume ratio of the present invention) water diluent carry out soak at room temperature, scrub with plastic brush behind 8～10h, water flushing is then dried;
(3) with rectangular coordinates paper and copy paper inscription rubbing residual soil area S on appointed equipment washing face
1(mm
2);
(4) at other that are cleaned equipment the surperficial repeated test 3 times of dirt is arranged with aforesaid method, and utilize arithmetic mean method to calculate each gained data, as clean rate data.
Two, result's expression and calculating
The clean rate B of dirt is calculated as follows:
(1) calculation formula: B=(S
0-S
1)/S
0* 100%
In the formula: B---clean rate, %;
S
0---the area that dirt covers in the given side before cleaning, mm
2
S
1---clean the area that dirt covers in the given side of back, mm
2
(2) the test data statistic record is as follows:
| ? | S 0（mm 2） | S 1（mm 2） | B（%） |
| Embodiment 1 | 10000 | 270 | 97.3 |
| |
10000 | 260 | 97.4 |
| |
10000 | 250 | 97.5 |
| |
10000 | 240 | 97.6 |
| |
10000 | 220 | 97.8 |
| |
10000 | 210 | 97.9 |
| Embodiment 7 | 10000 | 200 | 98.0 |
| |
10000 | 150 | 98.5 |
| |
10000 | 140 | 98.6 |
| Embodiment 10 | 10000 | 180 | 98.2 |
| Embodiment 11 | 10000 | 170 | 98.3 |
| Embodiment 12 | 10000 | 140 | 98.6 |
From the experimental result of above-mentioned statistics as can be known: water diluent boiler tubing scale remover 1:9(volume ratio of the present invention) between 97.3%～98.6%, has surpassed the standard of regulation 90% among the standard of regulation 95% among the HG/T2387-2007 " industrial equipments matting quality standard " and the TSG G5003-2008 " boiler matting rule " to the clean rate of dirt the boiler.
Claims (10)
1. boiler tubing scale remover, it is characterized in that mainly being made up of the each component of following weight percent: thionamic acid 12-15%, hydrofluoric acid 3-6%, restrainer 3-5%, surplus is a water.
2. boiler tubing scale remover as claimed in claim 1 is characterized in that: the poly alkyl alcohol oxyalkyl ether or the ethoxylated alkyl sulfate that include weight percentage 0.1-0.3%.
3. boiler tubing scale remover as claimed in claim 2 is characterized in that: the polyoxyethylene octylphenol ether that includes weight percentage 0.2-0.5%.
4. boiler tubing scale remover as claimed in claim 3 is characterized in that: the zinc sulfate that includes weight percentage 0.3-0.6%.
5. method for preparing boiler tubing scale remover as claimed in claim 1 is characterized in that step is as follows:
(1), get portion water, add thionamic acid and hydrofluoric acid, stir after adding;
(2), in (1), add restrainer, it is even to add the back restir;
(3), in (2), add water and satisfy 100% requirement, stir, get product.
6. the preparation method of boiler tubing scale remover as claimed in claim 5, it is characterized in that step (2) afterwards, step (3) sets up a step before: in (2), the poly alkyl alcohol oxyalkyl ether or the ethoxylated alkyl sulfate that add weight percentage 0.1-0.3%, fully stir until solid particulate matter molten intact till.
7. the preparation method of boiler tubing scale remover as claimed in claim 6, it is characterized in that setting up in the step: after adding poly alkyl alcohol oxyalkyl ether or ethoxylated alkyl sulfate, the polyoxyethylene octylphenol ether that adds weight percentage 0.2-0.5% again, fully stir until solid particulate matter molten intact till.
8. the preparation method of boiler tubing scale remover as claimed in claim 7 is characterized in that setting up in the step: before adding poly alkyl alcohol oxyalkyl ether or ethoxylated alkyl sulfate, add the zinc sulfate of weight percentage 0.2-0.5% earlier.
9. as the preparation method of any described boiler tubing scale remover of claim 5-8, it is characterized in that: in the step (1), add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively; In the step (2), add restrainer under the normal temperature while stirring.
10. as the preparation method of any described boiler tubing scale remover of claim 6-8, it is characterized in that: in the step (1), add thionamic acid and hydrofluoric acid under the normal temperature while stirring successively; In the step (2), add restrainer under the normal temperature while stirring; Set up in the step, earlier (2) be heated to 50-60 ℃, add each component more successively, fully stir until solid particulate matter is molten finish till, it is cooled to normal temperature.
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|---|---|---|---|
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| CN104925964A (en) * | 2015-05-20 | 2015-09-23 | 杜小卫 | Pipeline anti-scaling agent and preparation method thereof |
| CN104988517A (en) * | 2015-07-29 | 2015-10-21 | 河南红东方化工股份有限公司 | Acidic disincrustant and preparation method thereof |
| CN105738244A (en) * | 2014-12-10 | 2016-07-06 | 中国石油天然气股份有限公司 | A method of quantitatively measuring the dissolution rate of a cleaning agent for petroleum sulfonate coked materials |
| CN107192714A (en) * | 2017-06-01 | 2017-09-22 | 首钢总公司 | A kind of method and system for measuring Submerged Nozzle Clogging Course degree |
| CN109082673A (en) * | 2018-09-05 | 2018-12-25 | 泉州罕韩环保科技有限公司 | Environmentally friendly oil-removing rust-removing agent and preparation method thereof |
| CN113801742A (en) * | 2021-10-19 | 2021-12-17 | 沈阳紫光环境技术有限公司 | Cleaning dispersant for cleaning heating heat exchanger |
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| CN103344544A (en) * | 2013-06-18 | 2013-10-09 | 沈阳工业大学 | Adjustable steel disc rotation instrument |
| CN105738244A (en) * | 2014-12-10 | 2016-07-06 | 中国石油天然气股份有限公司 | A method of quantitatively measuring the dissolution rate of a cleaning agent for petroleum sulfonate coked materials |
| CN104925964A (en) * | 2015-05-20 | 2015-09-23 | 杜小卫 | Pipeline anti-scaling agent and preparation method thereof |
| CN104988517A (en) * | 2015-07-29 | 2015-10-21 | 河南红东方化工股份有限公司 | Acidic disincrustant and preparation method thereof |
| CN107192714A (en) * | 2017-06-01 | 2017-09-22 | 首钢总公司 | A kind of method and system for measuring Submerged Nozzle Clogging Course degree |
| CN109082673A (en) * | 2018-09-05 | 2018-12-25 | 泉州罕韩环保科技有限公司 | Environmentally friendly oil-removing rust-removing agent and preparation method thereof |
| CN109082673B (en) * | 2018-09-05 | 2020-10-23 | 泉州罕韩环保科技有限公司 | Environment-friendly oil and rust removing agent and preparation method thereof |
| CN114906943A (en) * | 2021-02-08 | 2022-08-16 | 中国石油天然气股份有限公司 | Special high-temperature antioxidant scale inhibitor for PACT-WAR and application thereof |
| CN114906943B (en) * | 2021-02-08 | 2023-04-07 | 中国石油天然气股份有限公司 | Special high-temperature antioxidant scale inhibitor for PACT-WAR and application thereof |
| CN113801742A (en) * | 2021-10-19 | 2021-12-17 | 沈阳紫光环境技术有限公司 | Cleaning dispersant for cleaning heating heat exchanger |
| CN113801742B (en) * | 2021-10-19 | 2023-07-25 | 沈阳紫光环境技术有限公司 | Cleaning dispersant for cleaning heating heat exchanger |
| CN114032534A (en) * | 2021-11-02 | 2022-02-11 | 江苏嘉宏新材料有限公司 | Passivating agent for hydrogen peroxide device before driving and preparation and application methods thereof |
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Application publication date: 20110824 |