PREPARATION FOR SCALING AND CLEANING OF INTERNAL SURFACES OF HEAT POWER AND PROCESS EQUIPMENT FROM SCALING DEPOSITS Russian patent published in 2020 - IPC C11D1/04 C11D1/50 C11D1/66 C11D3/40 F28G9/00 

FIELD: chemistry.

SUBSTANCE: invention relates to acidic detergents based on organic acids and can be used in factories where scale is formed on equipment. Described is a preparation for descaling and cleaning of internal surfaces of heat and power and process equipment from scale deposits, comprising: urotropin, thiourea, urea, lactic and citric acids, non-ionic surfactants: triton X-100 and TWEEN-80, methyl red dye-indicator of pH level and water, with the following ratio of components, wt. %: urea 3.5–3.7, lactic acid 7–7.5, citric acid 7–7.5, urotropine 0.3–0.5, thiourea 0.3–0.5, triton X-100 - 1–2, TWEEN-80 - 0.5–1, methyl red 0.1–0.2, water 77.1–80.3.

EFFECT: technical result is the creation of a detergent with high detergent capacity with respect to a wide range of contaminants in a situation where the scale contains oil products with low corrosion activity and low consumption rates of the detergent.

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