SU806754A1 - Detergent for cleaning internal combustion engines - Google Patents

Description

Union of Soviet

Socialist

Republics

DESCRIPTION

Inventions

TO AUTHOR'S CERTIFICATE

<‘« 806754 (61) Additional to author. certificate-wu - (22) Declared 11.27.78 '(21) 2690595 / 23-04 with the addition of application No. -.

(23) Priority -

Published on February 23, 81. Bulletin N8 7

Date of publication of the description ⁴ 25.0 2.81 (51) M. Cl. ³

S 11 0 1/83

S 11 0 3/26

S 11 0 3/43 (53) UDC 661.185 (088.8)

(72) The inventors V.A. Volkov, A.K. Goldenfon, A.I. Glazov, A.A. Boyko, A.K. Pasanaev, V.A. Vladimirov, V. M '. Violin player  Yu. B. Bondarenko, V. G. Mymrin, A.-N. Neelov and T. A. Renskaya (71) Applicant -------- ^; ------------— g ---------------------- i —------------ ---- L-iX— ~: j with id ίί ---- s ё 'λ; ·· CW 1TV7 * (54) DETERGENT FOR CLEANING INTERNAL COMBUSTION ENGINES

• The invention relates to the cleaning of metal products by the physicochemical method using compositions having detergent and solvent properties, chemically interacting with contaminants and can be used to clean the piston cylinder group and gas-air duct of internal combustion engines.

It is known to use detergents and solvents for cleaning the cylinder-piston group and gas-air ^: airway of internal combustion engines from soot and other contaminants. Parts and components of engines are washed with organic solvents, as well as with aqueous detergent solutions of alkalis, phosphates and surfactants at 60-95 ° C ilj. 20

A detergent containing soda ash, water glass, tripolyphosphate, sodium, a nonionic surfactant such as Sintanol-DT-7 or DS-U and sodium alkyl sulphate L2J is also known.

However, the use of such cleaning agents requires partial or complete disassembly of the engine, which is associated with its decommissioning, and 30 the use of most solvents is dangerous due to toxicity and explosion and fire hazard.

The purpose of the invention is to increase the washing action and the possibility of cleaning the engine during its operation. x

This goal is achieved in that the detergent for cleaning internal combustion engines, containing sodium tripolyphosphate, nonionic ₇ and anionic surfactant, additionally contains potassium chromate, urea, isopropyl alcohol and water in the following ratio, wt.%: Trisoliphosphate sodium 0.3-0.9

Potassium Chromate 0.1-0.3

Anionic Surfactant Nonionic Surfactant Urea Isopropyl Alcohol Water

0.01-0.6

0.01-0.8 O, 2-1 1-8

Rest

The technology for the production of detergent consists in sequentially dissolving the components at 20-40 ° C in a periodic or continuous circuit /

me Gas emissions and wastewater at the same time; not formed.

Example 1. Dissolving in 966 g of water 3 g of tripolyphosphate. sodium, 2 g of potassium chromate, 0., 1 g of syntanol DS-10 (nonionic surfactant) $ g of sodium dodecylbenzenesulfonate (anionic surfactant), 5 g of urea, 20 g of isopropyl alcohol give 1000 g of detergent composition. Quantitative determinations of the emulsifying and washing ability of alkalinity and surface tension are carried out as follows.

The magnitude of the surface tension is determined by the known method of Re-15 binder.

The determination of emulsifying ability is carried out in a laboratory setup according to the following procedure: 1 liter of the investigated 2Q liquid is poured into a metal cup, onto the surface of which a polyethylene ring is placed. 4 ml of a model oil product (M-40 fuel oil and MS-20 oil in a ratio of 1: 1) is added to the center of the ring. The mixture is kept for 1 min, then stirred with a propeller stirrer for 1 min.

After mixing, the emulsion is poured into a tank for sludge, from which after 5 min a 3D sample S of 50 ml is taken. The emulsion is analyzed for the content of petroleum products by photo-calorimetry of a chloroform extract. The concentration of oil in the emulsion is determined by the grading curve. A quantitative indicator of aegyulatory ability is determined by the following Formula:

E = f · 100¾, ₄₀ where E is the emulsifying ability,%;

a - the amount of emulsified oil, determined by the calibration curve, mg / l .; 45 s - the amount of oil introduced into the system, mg.

The assessment of the comparative washing ability is carried out on a laboratory bench according to the following procedure: pour a 3 liter test solution mixed with a mechanical stirrer into a metal cup of a temperature-controlled vessel (50 ° C) and immerse metal plates with model contaminants applied to their surface 55 (MC-oil 20). The washing time is 3.00 s. The calculation of the washing ability is carried out according to the formula. P / ι -Ра, Р - Р ^Г 4 ^g о • 100%, where Р _о - weight of a clean plate, g;

P is the weight of the plate with model deposits; 65 - the weight of the plate with model deposits after washing.

The alkalinity of the solutions is determined by titration with a solution of hydrochloric acid.

The following data were obtained for the described composition:

Surface tension, n / m31-10

Emulsifying ability,% 87

Washing ability,% 82

Alkalinity, mEq / L 16

Example 2. By dissolving in 950 g of water, 9 g of sodium tripolyphosphate, 2 g of potassium chromate, 0.01 g of syntamide, 5.4 g of dodecylbenzenesulfonate. 5 g of urea, 30 g of isopropyl alcohol give 1000 g of a washing composition.

The following indicators were obtained: Surface tension, n / m "’ 2 9.8-10 '

Emulsifying ability,% 88

Washing ability,% 85

Alkalinity, mEq / L 45 Example 3. Dissolution in

939 g of water, 5 g of sodium tripolyphosphate, 2 g of potassium chromate, 4 g of syntanol DT 7, 0.01 g of sodium dodecylbenzene sulfonate, 10 g of urea and g of isopropyl alcohol give 1000 g of the detergent composition.

The following data were obtained for this composition:

Surface tension, n / m

Emulsifying ability,%

31.5 -10 ⁵

Washing ability,% 89

Alkalinity, mEq / L 27

Example 4 Dissolving in 932 g of water, 5. g of sodium tripolyphosphate, 1 g of potassium chromate, 2 g of syntamide - 5.4 g of sulFonol NP -

3.6 g of urea and 50 g of isopropyl alcohol give 1000 detergent compositions.

The following data were obtained for

30, ί · 10 ³

84 '

about.

the described composition:

Surface tension, n / m

Emulsifying ability,% Detergency, Alkalinity, mEq / L

Example 5. Dissolving in 953 g of water, 4 g of sodium triplyphosphate, 3 g of potassium chromate, 4 g of syntanol DS-10.01 g of sodium dodecylbenzenesulfonate, 4 g of urea and 30 g of isopropyl alcohol give D000 g of a washing composition.

The following indicators of the washing composition were obtained:

Surface tension, n / m

32-10 ³ emulsifying ability,% 97

Washing ability,% 95

Alkalinity, mgEq / L21

Example 6. By dissolving in 930 g of water, 5 g of tripolyphosphate, 2 g of potassium chromate, 0.5 g of syntamide - 5.0.5 g of sulfonol NP - 3.2 g of urea and 60 g of isopropyl alcohol give 1000 g of detergent. .

The following indicators of the detergent composition were obtained:

The following indicators of the detergent composition were obtained:

Surface tension, n / m

Emulsifying ability,%

Detergency,% Alkalinity, mg · eq / L Known composition

30.0 U · '· ³

Labomid-203 has a washing effect

93% at a concentration of 30 g / l.

The data in the examples confirm that the described composition

Surface tension n / m 30.910 Emulsifying method % 87 Washing ability,% 79 Alkalinity, mg equiv / l 25

It has high detergent and emulsifying properties. The composition is effective for cleaning internal combustion engines without putting them out of action.

Example 7. Dissolution in

957 g of water, 6 g of sodium tripolyphosphate, 2.5 g of potassium chromate ', 20

0.5 g of syntamide - 5.6 g of sodium dodecylbenzenesulfonate, 8 g of urea and 20 g of isopropyl alcohol give 1000 g of a washing composition.

The following indicators of washing composition were obtained:

Superficial natya _ Ί Zhenye, n / m 2910 ⁵ Emulsifying way-. % 92 Washing ability% 83. Alkalinity, mg • equiv / l 32 Example 8 . Dissolving in

944 g of water, 5 g of sodium tripolyphosphate, 2 g of potassium chromate, G g of syntanol DS-10.3 g of sodium secondary alkyl sulfate, 5 g of urea and 40 g of isopropyl alcohol give 1000 g of the detergent composition.

The following indicators of the detergent composition were obtained:

Surface tension, n / m

Emulsifying ability

Washing ability,% · Alkalinity, mg equiv / l

Example 9. Dissolution in.

971 g of water, 5 g of sodium tripolyphosphate, 2 g of potassium chromate, 8 g of syntamide 5.0.01 g of sulfonol NP-3.4 g of mojq chevina and 10 g of isopropyl alcohol give 1000 g of detergent composition. .

The following indicators of the detergent composition were obtained:

Example 11. Cleaning is carried out on a real site (K6Z57 / 80C engine on the Povenets motor ship). When operating engines of this kind without introducing a detergent composition, the air cooler is oiled, deposits of hard deposits in the blowdown windows reach 2-3 mm, in the exhaust ducts the deposits reach a thickness of 4-6 mm. The detergent composition is fed into the airway before the air cooler through a spray gun with a nozzle diameter of 0.5 mm under a pressure of 5 kg / cm. The amount of detergent composition introduced is 6 l every 72 hours. The detergent composition is used in the following ratio of components, wt.%:

30.510 ' ³

45

TripolyphosFat sodium 0.8 Chromic acid potassium 0.1 Sintamide-5 0.6 Dodecylbenzenesulfonate sodium 0.05 Urea 0.5 Isopropyl 'alcohol 3.0 Water 94.95 After the tests that spend

30.410 ' ^{3 55} . 97 for 412 hours of engine operation, inspect the engine windows and air coolers.

The following was discovered: the solution of the first stage is pure; side purge windows are only in some places covered with light carbon deposits up to 0.3-0.5 mm thick, the air cooler is clean.

The use of the described detergent composition for continuous cleaning of the cylinder-piston group and the gas-air path of internal combustion engines from carbon deposits and other contaminants can increase the degree of cleaning of metal surfaces by 1.5-2 times.

Surface tension, n / m

Emulsifying ability,%

Washing ability,%

Alkalinity, mg · equiv / l

Example 10. By dissolving in 60 902 g of water, 4 g of sodium tripolyphosphate, 2 g of potassium chromate, 0.01 g of syntamide - 5.6 g of urea and 80 g of isopropyl alcohol, 1000 g of a washing composition are obtained.

Claims (2)

1. Berenson S. P, Chemical technologists of cleaning parts of internal combustion engines. M., Transport Q 1967, p. 53-55. 2. Recommendations for the use of new cleaning tools for machines and parts during the repair, m., GOSNITI, p. 32 (prototype).