Detergent of heat exchange coiled pipe and deterging method of detergent

Abstract

The invention discloses a detergent of a heat exchange coiled pipe. The detergent is prepared from the following components: 3.5 to 5 weight percent of sodium dodecylbenzene sulfonate, 8 to 12 weightpercent of aluminum chloride, 1 to 2 weight percent of acetamide, 15 to 20 weight percent of ethanol, 5 to 8 weight percent of 3-oxo-cyclobutanecarboxylate, 5 to 10 weight percent of diethylenetriaminepenta acid, 0.5 to 1 weight percent of 6-trifluoromethyl-nicotinate, 1.5 to 2 weight percent of nitric acid, 2 to 6 weight percent of chromium acetate, 0.3 to 0.5 weight percent of agar and the balance of sulfamic acid. By adopting the detergent disclosed by the invention, the disadvantages in the prior art can be improved, the descaling treatment time is shortened and the passivation effect on apipe wall is improved.

Description

Technical field [0001] The invention relates to a detergent, in particular to a detergent for heat exchange coils and a method for removing the detergent. Background technique [0002] During the long-term use of the heat exchange coil, the mineral impurities contained in the water will gradually form a scale layer on the inside of the heat exchange coil, which will affect the heat exchange efficiency of the heat exchange coil. Therefore, the heat exchange coil needs to be cleaned regularly. Chinese invention patent CN1100864C discloses a powdery descaling agent, which realizes corrosion inhibition, pickling and passivation of the inner wall of metal pipelines. However, the passivation environment needs to be kept clean when the metal is subjected to passivation treatment, which leads to the use of this descaling agent for a longer period of cleaning to gradually complete the passivation process. Summary of the invention [0003] The technical problem to be solved by the present ...

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