Cleaning solution suitable for plate heat exchanger and preparation method thereof

Abstract

The invention discloses a cleaning solution suitable for a plate heat exchanger and a preparation method thereof. The preparation method comprises the steps: preparing glass into porous glass beads, then performing modification treatment and obtaining modified porous glass beads; then adding the isocyanate-terminated prepolymer into the dispersion liquid, carrying out dispersion treatment, and adding the modified porous glass beads in the dispersion process to obtain polyurethane-porous glass composite beads; dissolving ethylenediamine tetraacetic acid in boiling water, naturally cooling to room temperature, adding sulfamic acid, citric acid and copper sulfate, stirring until the materials are dissolved, then adding 1-aminoethyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imine salt, and ultrasonically dispersing uniformly to obtain a premixed solution; and finally, adding iron ferrocyanide and polyurethane-porous glass composite microbeads into the premixed liquid while stirring, and carrying out homogenization treatment so as to obtain the cleaning liquid. The cleaning solution is convenient to use, and can be directly introduced into the plate heat exchanger in a pulse cleaning manner so that the plate heat exchanger can be effectively cleaned on the basis of not disassembling the plate heat exchanger.

Description

technical field

[0001] The invention relates to a cleaning liquid, in particular to a cleaning liquid suitable for plate heat exchangers and a preparation method thereof. Belongs to the technical field. Background technique

[0002] Plate heat exchanger is a high-efficiency heat exchange equipment widely used in chemical industry, electric power, thermal power and other industries. It has the characteristics of small footprint and high heat transfer coefficient. During the operation of the plate heat exchanger, calcium carbonate, magnesium carbonate, rust mud and other deposits will be produced on the plate due to the influence of impurities in the working medium, temperature changes of chemical composition, etc. The thermal conductivity of these attachments is much lower than that of the metal plate, resulting in a decrease in the heat transfer efficiency of the plate heat exchanger, an increase in pressure loss, and corrosion of the plate. Therefore, the plate heat excha...

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