Detergent for cleaning containers and metal surfaces

FIELD: chemistry.

SUBSTANCE: proposed detergent used can be used to clean containers and pipes from mineral, oil, resinous, asphalt-bitumen and paraffin contaminants, equipment and surfaces from lubricants and oil on mechanical engineering facilities, for cleaning surfaces in hard-to-reach spots, microcracks, surfaces damaged with metal loss from oxide scales and rust. The detergent contains the following in wt %: Neonol 0.5-4.0; sintamide-5 1 - 5; sodium metasilicate 8 - 15; liquid glass with silica modulus of 2.7 - 10 - 15; silicate with silica modulus of 4 - 5 - 10; sodium polyphosphate 5 - 15; caustic soda 1 - 5; calcined soda 15 - 23; sodium sulphate - up to 100.

EFFECT: increased ability of cleaning hard-to-reach places and microcraks from oxide scales and rust.

1 tbl, 3 ex

 

The invention relates to the technical detergents and cleaning technology of tanks, tanks, tanks of oil tankers, pipelines, washing wells and equipment in the oil and petrochemical industry from mineral, oil, asfaltobetonnyh, resin, paraffin pollution, to clean equipment and surfaces from lubricants, such as graphite, and oils for machine-building enterprises, for cleaning surfaces in hard to reach places, the cracks, the surface damaged with the loss of metal from scale and corrosion.

Known detergent to clean metal surface on the patent of the Russian Federation No. 2259393, publ. 10.11.2007, which contains, wt%: ionic surfactant - sinterol 10,0-12,0; metasilicate sodium 2,0-5,0; sodium tripolyphosphate or trisodium phosphate 15,0-20,0; bactericidal anti-corrosion additive 3,0-5,0; sodium carbonate (soda ash) to 100. However, the known tool is difficult to remove impurities, characterized by a low efficiency in saline water and high capacity of working solutions for oil products, which requires additional processing by the clearing of these products.

A known method of removing asphaltoresinparaffin deposits (ARPD), described in the patent of the Russian Federation No. 2209937, publ. 10.08.2003 is., whereby to produce a well treatment or pipeline aqueous solution of 1-2%concentration not heated above 60°C wash reagent containing powdered synthetic detergent, including not less than 12 wt.% Surfactant, at least 10.5 wt.% phosphate salts in terms of P2About5and at least 2 wt.% sodium silicate in terms of SiO2and powder technical detergent comprising at least 4.5 wt.% Surfactant, at least 11 wt.% phosphate salts in terms of P2About5and not less than 1.7 wt.% sodium silicate in terms of SiO2, in the following ratio, wt.%: CMC 20-30; TMS 70-80. This method is applicable for the cleaning of tanks.

However, this known method does not provide a positive result in the presence of saline water with a density above 1,005 g/cm3because when this occurs the precipitation. In addition, a known method can be implemented only when the temperature of the washing reagent is not above 60°C, because at higher temperatures it loses its detergent properties, which does not allow to deal with old, for example betonosmesitelnymi, precipitation of mineral oil and paraffin and leads to increased consumption as reagent and processing time. All this reduces the effectiveness of the method.

The closest analogue, you is an early prototype, is the recipe detergent "PAN" to clean the surface from organic contaminants described in the patent of Russia №2309979 published 10.11.2007, including surfactants surfactants, phosphate-containing reagent, metasilicate sodium and soda ash, additionally contains caustic soda, sodium polyphosphate and sodium sulfate as the surfactant comprises a mixture of neonols and sintimid-5 during their mass ratio of 1:0.25 to 10.0 g, respectively, and as a phosphate-containing reagent is sodium tripolyphosphate and trisodium phosphate, in the following ratio, wt.%: neonol - 0,5-4,0; sintimid-5 - 1,0-5,0; metasilicate sodium - 8,0-15,0; sodium tripolyphosphate - 8,0-15,0; trisodium phosphate - 10,0-15,0; sodium polyphosphate - 2,0-10,0; caustic soda - 1,0-5,0; soda ash - 15,0-23,0; sodium sulfate to 100. This cleanser has a complex physico-chemical properties: solvent, wetting and degreasing properties. The consumption of detergent and foaming small, and the degree of purification from chronic pollution and the preservation of these properties in a wide range of temperatures up to 98°C and in the presence of water with different degree of salinity is much higher than the above-mentioned analogues.

The disadvantage of this detergent is its lack of sustainability due to the presence in R is capture of sodium tripolyphosphate, of trisodium phosphate, which are allergens, and extremely harmful to the environment, falling into water, contribute to the enhanced formation of blue-green algae, which leads to poisoning. In addition, the described detergent has poor efficiency when cleaning metal surfaces from dirt in hard to reach places and microcracks, scale and corrosion, lack of efficiency when cleaning metal surfaces from scale and corrosion, inadequate corrosion protection of the surface being cleaned, resulting in the appearance of the metal surface does not produce enough clean impressions and very quickly re-deposition of contaminants on the surface being cleaned, especially in the areas of scale and corrosion, even in the process of direct treatment, that is, this cleanser has a low performance when used for industrial purposes.

The objective of the invention is to create a new detergent for cleaning of tanks and metal surfaces from contamination with high performance characteristics when used for industrial purposes: eco-friendly, wide range temperature aqueous solution, with a high cleaning ability from contamination in trudnoca is accessible locations and microcracks, in places of scale and corrosion, high cleaning ability from scale and corrosion, and subsequent corrosion protection of the surface.

This technical result is achieved by the fact that detergent for cleaning of tanks and metal surfaces from contamination, including surfactants surfactant - neonol and sintimid-5, a corrosion inhibitor, metasilicate sodium, soda ash, caustic soda, sodium polyphosphate and sodium sulfate, according to the invention as corrosion inhibitor contains liquid glass with silica module 2.7 and silicate with silica modulus of 4.0 in the following ratio, wt.%:

neonol0,5-4,0
sintimid-51,0-5,0
metasilicate sodium8,0-15,0
liquid glass with silica modulus of 2.710,0-15,0
silicate with silica module 4,05,0-10,0
polyphosphate sodium5,0-15,0
caustic soda1,0-5,0
soda ash15,0-23,0
the sodium sulfate100

By introducing a detergent for cleaning of tanks and metal surfaces from contamination as a corrosion inhibitor liquid glass in the following ratio, wt.%: neonol - 0,5-4,0; sintimid-5 - 1,0-5,0; metasilicate sodium - 8,0-15,0; liquid glass with silica module 2,7 - 10,0-15,0; silicate with silica module 4,0 - 5,0-10,0; sodium polyphosphate - 5,0-15,0; caustic soda - 1,0-5,0; soda ash - 15,0-23,0; sodium sulfate to 100, improved operational characteristics detergent for use in industrial purposes, namely, get a vehicle more environmentally friendly, in a wide range of temperature aqueous solution, with a high cleaning ability from contamination in remote places and microcracks, scale and corrosion, high cleaning ability from scale and corrosion, and subsequent corrosion protection of the surface.

The claimed detergent for cleaning of tanks and metal surfaces from organic contaminants has novelty in comparison with the prototype, it differs from the above-listed features and achieve perceived by the applicant technical rez is ltate.

The set of essential features of the proposed technical solution composition should not be explicitly studied the prior art, i.e. meets the criteria of "novelty" and "inventive step".

The claimed detergent will be widely used for cleaning of tanks, tanks, tanks of oil tankers, pipelines, washing wells and equipment in the oil and petrochemical industry from mineral, oil, asfaltobetonnyh, resin, paraffin contamination, cleaning of equipment and surfaces from lubricants, such as graphite, and oils for machine-building enterprises, from scale and corrosion, and subsequent corrosion protection of the surface.

To obtain offered of detergent, both in the laboratory to field conditions, we used the following substances:

- neonol - ethoxylated ALKYLPHENOLS on the basis of propylene trimer type AF9-6on THE other 38.507-63-171-91 or AF9-12on THE other 2483-077-05766801-98;

- sintimid-5 - polietilenglikolya esters of monoethanolamide synthetic fatty acid fraction C10-C18on THE other 6-02-640-80;

- metasilicate sodium on THE 2145-026-00204872-2002;

liquid glass with silica modulus of 2.7 on THE 2385-001-54824507-2000;

- silicate with silica module 4,0 produced by the company "Antiorr paint";

- polyphosphate sodium GOST 20291-80; - caustic soda (sodium hydroxide) according to GOST 2263-79;

- soda ash (sodium carbonate) TU GOST 5100-85; sodium sulfate on THE 2141-084-00209527-99.

We offer detergents were prepared by dry mixing the ingredients in the stated their quantitative value.

For testing in the laboratory were prepared three songs of the proposed drug, the composition of which is given in premaraj 1, 2, 3.

Example 1

Technological scheme of production of detergent for cleaning of tanks and metal surfaces consists of the following stages:

1. Metered neonol 0.5 in.

2. Dispense sintimid-5 to 1.0.

3. Dispense metasilicate sodium - 8,0.

4. Metered liquid glass with silica modulus of 2.7 to 10.0.

5. Metered silicate with silica modulus of 4.0 to 5.0.

6. Dispense sodium polyphosphate to 5.0.

7. Dispense the caustic soda is 1.0.

8. Dispense soda ash - 15,0.

9. Dosing the sodium sulfate is 54.5.

All well mixed.

Example 2

Technological scheme of production of detergent for cleaning of tanks and metal surfaces consists of the following stages:

1. Metered neonol - 4,0.

2. Dispense sintimid-5 - 5,0.

3. Dispense metasilicate sodium - 15,0.

4. Metered liquid glass with kremnezema the first module of 2.7 - 15,0.

5. Metered silicate with silica module 4,0 - 10,0.

6. Dispense sodium polyphosphate - 15,0.

7. Dispense the caustic soda to 5.0.

8. Dispense soda ash - 23,0.

9. Dosed sodium sulphate - 8.

All well mixed.

Example 3

Technological scheme of production of detergent for cleaning of tanks and metal surfaces consists of the following stages:

1. Metered neonol was 2.25.

2. Dispense sintimid-5 - 3,0.

3. Dispense metasilicate sodium - 11,5.

4. Metered liquid glass with silica modulus of 2.7 to 12.5.

5. Metered silicate with silica module 4,0 - 7,5.

6. Dispense sodium polyphosphate - 10,0.

7. Dispense the caustic soda to 3.0.

8. Dispense soda ash - 19,0.

9. Dosing the sodium sulfate - 31,25.

All well mixed.

When laboratory testing has determined the following properties offer detergent:

- ability worker aqueous solution of detergent in respect of paraffin and graphite lubricants in respect of oxides and corrosion.

Washing ability, cleaning of oxides and corrosion (hereinafter - washing capacity)was determined by the gravimetric method, the essence of which lies in the definition of univemity dirt, oxides, corrosion from the surface of the samples. Washing samples carried out at the laboratory the nuclear biological chemical (NBC washing plant by dipping method with excitation detergent solution using a stirrer, with a constant speed equal to 3000 Rev/min the Total concentration of detergent in the working solution is 7 g/DM3(i.e. working solution of 0.7%concentration), wash temperature from 45 to 98°C, most of the experiments were conducted at a temperature of 75°C. For tests take two identical sample No. 1 and No. 2, made of steel grade St-3 with traces of oxides and corrosion, visually determinable, wash them under running water with acetone, dried and weighed on an analytical balance. Further, the sample No. 1 pollute deposits with a real oil production facilities (tubing, elements of submersible pumps and the like) by dipping into the melt or contaminate the surface of the sample with graphite grease. The contaminated sample No. 1 is cooled at room temperature, weighed and placed in a washing machine, where washed for 3 minutes After washing, the sample No. 1 was dried in air to constant mass. Ability is defined as the ratio of the mass of contaminants removed from the surface of the test sample No. 1 to the total mass of impurities present on the surface prior to cleaning, expressed as a percentage. Washing capacity was determined at various temperatures of the working solution, and also at various salinity of water used for preparation of working solution (with a low degree of mineralization of 4.5 ppm and high is th degree of mineralization 45 ppm, which was obtained by dissolution of natural sea salt in a given quantity of distilled water). Cleanability of oxides and corrosion is determined visually by comparing sample No. 1 sample No. 2, which was not subjected to the sink.

The test results listed in the table.

Table
Content, wt.%
The concentration of the working solution of 7 g/DM3
Temperature, °C% cleaning oil% clean from scale and corrosion
1234
neonol - 0,5
sintimid-5 - 1,0
metasilicate sodium - 8,0
liquid glass with silica module 2,7 - 10,0
silicate with silica module 4,0 - 5,0
polyphosphate sodium - 5,0
caustic soda -1,0
soda ash - 15,0
the sodium sulfate is 54.57598,398,5
neonol - 4,0
sintimid-5 - 5,0
metasilicate sodium - 15,0
liquid glass with silica module 2,7 - 15,0
silicate with silica module 4,0 - 10,0
polyphosphate sodium -15,0
caustic soda - 5,0
soda ash - 23,0
sodium sulphate - 87599,099,0
neonol - 2,25
sintimid-5 - 3,0
metasilicate sodium - 11,5
liquid glass with silica module 2,7 - 12,5
silicate with silica module,0 - 7,5
polyphosphate sodium - 10,0
caustic soda - 3,0
soda ash - 19,0
the sodium sulfate - 31,257597,6of 97.8
The PLACEHOLDER
neonol - 0,5-4,0
sintimid-5 - 1,0-5,0
metasilicate sodium - 8,0-15,0
sodium tripolyphosphate - 8,0-15,0
trisodium phosphate - 10,0-15,0
polyphosphate sodium - 2,0-10,0
caustic soda - 1,0-5,0
soda ash - 15,0-23,0
the sodium sulfate to 1007595,0-97,010,0

In addition, to determine the anti-corrosion ability of the inventive detergent sample No. 1, washed the claimed means, and sample No. 2 with the same traces of oxides and corrosion left under the influence of the external environment and daily wetting by water for 5 days. In sample No. 1 of traces of oxides and corrosion by the end of the fifth day does not appear on the sample No. 2 the area covered by oxides and corrosion, increased 1.5 times.

Data analysis the table shows that the proposed detergent for cleaning of tanks and metal surface enhances performance m the nes tools for use in industrial purposes, namely, get a vehicle more environmentally friendly, in a wide range of temperature aqueous solution, with a high cleaning ability from dirt in hard to reach places and microcracks, scale and corrosion, high cleaning ability from scale and corrosion, and subsequent corrosion protection of the surface being cleaned, by introducing a detergent for cleaning of tanks and metal surfaces from contamination as a corrosion inhibitor liquid glass in the following ratio, wt.%: neonol - 0,5-4,0; sintimid-5 - 1,0-5,0; metasilicate sodium - 8,0-15,0; liquid glass with silica module 2,7 - 10,0-15,0; silicate with silica module 4,0 - 5,0-10,0; sodium polyphosphate - 5,0-15,0; caustic soda - 1,0-5,0; soda ash - 15,0-23,0; sodium sulfate to 100.

Detergent for cleaning of tanks and metal surfaces from contamination, including surfactants surfactant-neonol and sintimid-5, a corrosion inhibitor, metasilicate sodium, soda ash, caustic soda, sodium polyphosphate and sodium sulfate, characterized in that as the corrosion inhibitor contains liquid glass with silica module 2.7 and silicate with silica modulus of 4.0 in the following ratio, wt.%:

0,5-4,0
Sintimid-51,0-5,0
Metasilicate sodium8,0-15,0
Liquid glass with silica modulus of 2.710,0-15,0
Silicate with silica module 4,05,0-10,0
Polyphosphate sodium5,0-15,0
Caustic soda1,0-5,0
Soda ash15,0-23,0
The sodium sulfate100



 

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