Descaling and rinsing method for plate heat exchange unit

Abstract

The invention discloses a descaling and rinsing method for a plate heat exchange unit. A descaling and rinsing device used in the method comprises a circulating pipe, a rinsing pump, a corrosion inhibitor dosing box, a descaling agent dosing box, a pH value detector and a control box. When the plate heat exchange unit is descaled and rinsed, the descaling and rinsing device only needs to be connected to the plate heat exchange unit to complete the steps of agent dosing, agent adding, descaling and rinsing. The descaling and rinsing method for the plate heat exchange unit has the advantages that the plate heat exchange unit is descaled and rinsed without being dismounted, operation is easy, the control precision is high, the descaling effect is good, and the method can be applied and popularized conveniently.

Description

technical field [0001] The invention relates to the technical field of heat exchange units, in particular to a descaling cleaning method for a plate heat exchange unit. Background technique [0002] In the plate heat exchange unit, due to the long-term operation at a higher temperature, the plate heat exchanger is easy to scale, and if the scaled plate heat exchanger is not descaled in time, it will not only reduce the heat exchange effect, but also increase the Hydraulic resistance is increased, while corrosion is aggravated. Therefore, in order to ensure the efficient and long-term operation of the plate heat exchange unit, the descaling of the plate heat exchanger will be very important. At present, the scale removal of plate heat exchangers generally adopts two methods: dismantling method and regular dosing cycle method. The dismantling method is to disassemble the plate heat exchanger on site, then manually clean the heat exchange plates, and reassemble after cleaning...

AI Technical Summary

Problems solved by technology

The dismantling method is to disassemble the plate heat exchanger on site, then manually clean the heat exchange plates, and then reassemble after cleaning. This method is more thorough in descaling but time-consuming and laborious, and it is easy to cause the loss of sealing gaskets; regular dosing The circulation method is to inject chemical descaling into the circulation pipe network on both sides of the plate heat exchanger, and use the circulation pump to circulate repeatedly. Although this avoids the trouble of dismantling the plate heat exchanger, the use of the circulation pipe network for the plate heat exchange The cycle descaling of the device not only needs to inject a large amount of chemicals, but also consumes electricity and water. The time for descaling and cleaning is also long and the cost is high.

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