Method for cleaning heat exchangers
A technology of heat exchanger and alkali cleaning, which is applied in the direction of chemical instruments and methods, flushing, detergent composition, etc., can solve the problems of untimely dosing, low efficiency, corrosion, etc., and achieve the effect of short cleaning time and good effect
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[0018] The cleaning method of the heat exchanger of the present invention will be further described below in conjunction with the examples, but the present invention is not limited thereby.
[0019] The cleaning method of the heat exchanger of the present invention adopts a chemical cleaning method, which adopts two cleaning pumps with a flow rate of 200 cubic meters per hour and a head of 0.78 MPa. But it is not limited to this.
[0020] A preferred embodiment of the cleaning method of the heat exchanger of the present invention will be described in detail below. The method comprises the following steps: alkali washing step, pickling step, rinsing step and passivation step.
[0021] In the alkaline cleaning step, an alkaline degreaser is used as the main chemical for cleaning. Preferably, the alkaline degreasing agent is XDA5. Specifically, dilute the alkaline degreasing agent XDA5 with water to make an alkali washing solution with a mass concentration of 0.5% to 1%, then ...
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