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Deoxygenating scale inhibitor and preparation method thereof

A technology of oxygen barrier and dispersant, which is applied in descaling and water softening, chemical instruments and methods, complex/solubilizer treatment, etc., can solve the problems of poor temperature resistance, poor corrosion inhibition effect, and poor scale inhibition stability. Achieve the effect of inhibiting anaerobic bacteria and long shelf life

Inactive Publication Date: 2015-11-11
SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above technical problems, the present application provides an oxygen descaling and antiscaling agent and its preparation method, which solves the technical problems of existing water treatment antiscaling agents such as high cost, poor temperature resistance, poor scale inhibition stability and poor corrosion inhibition effect.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add trisodium phosphate and deionized water into a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 50°C, stir for 40min, add D-isoascorbic acid and D-isoascorbate sodium dropwise , heated to 75°C, and reacted for 1h.

[0025] Add ethylenediamine, sodium tripolyphosphate, polymaleic anhydride and sodium hydroxide, raise the temperature to 105°C, react for 2 hours, raise the temperature to 125°C, add the remaining raw materials, and stir for 100min to obtain the oxygen and scale inhibitor.

[0026] Quickly remove dissolved oxygen in feed water, and the corrosion inhibition rate is 0.01mm / a; the formula is food additives, which will not increase the burden on the environment, and will not affect the boiler water, steam quality and various technical indicators; energy saving, water saving, consumption reduction, resistance Scale rate of 98%; long shelf life, 60 ℃ storage for one month, 99% scale inhibition effect...

Embodiment 2

[0029] Add trisodium phosphate and deionized water into a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 70°C, stir for 60 minutes, add D-isoascorbic acid and D-isoascorbate sodium dropwise , heated to 95°C, and reacted for 3h.

[0030] Add ethylenediamine, sodium tripolyphosphate, polymaleic anhydride and sodium hydroxide, raise the temperature to 125°C, react for 4 hours, raise the temperature to 145°C, add the remaining raw materials, and stir for 120min to obtain the oxygen and scale inhibitor.

[0031] Quickly remove dissolved oxygen in feed water, and the corrosion inhibition rate is 0.007mm / a; the formula is food additives, which will not increase the burden on the environment, and will not affect the boiler water, steam quality and various technical indicators; energy saving, water saving, consumption reduction, resistance The scaling rate reaches 99%; the shelf life is long, and it can be placed at 60°C for ...

Embodiment 3

[0034] Add trisodium phosphate and deionized water into a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 50°C, stir for 40min, add D-isoascorbic acid and D-isoascorbate sodium dropwise , heated to 75°C, and reacted for 1h.

[0035] Add ethylenediamine, sodium tripolyphosphate, polymaleic anhydride and sodium hydroxide, raise the temperature to 105°C, react for 2 hours, raise the temperature to 125°C, add the remaining raw materials, and stir for 100min to obtain the oxygen and scale inhibitor.

[0036] Quickly remove dissolved oxygen in feed water, and the corrosion inhibition rate is 0.005mm / a; the formula is food additives, which will not increase the environmental burden, will not affect the boiler water, steam quality and various technical indicators; energy saving, water saving, consumption reduction, resistance The scaling rate reaches 99%; the shelf life is long, and it can be placed at 65°C for one month, a...

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Abstract

The applicant discloses a deoxygenating scale inhibitor and a preparation method thereof. The method comprises the step of weighing D-erythorbic acid, sodium D-isoascorbate, polymaleic anhydride, polyacrylic acid, deionized water, sodium polyacrylate, a dispersing agent, sodium tripolyphosphate, trisodium phosphate, sodium hydroxide and an organic solvent in parts by weight, wherein the corrosioninhibition speed is 0.001 to 0.01 mm / a; the scale inhibiting ratio reaches 98 to 100 percent; the expiration date is long, the scale inhibition effect is 99 to 100 percent after the scale inhibitor being stored for one month at the temperature of 60 to 70 DEG C, and anaerobic bacteria can be effectively inhibited.

Description

technical field [0001] The application belongs to the technical field of ring reagents, and in particular relates to an environment-friendly, oxygen-removing and scale-inhibiting agent with good corrosion inhibition performance and a preparation method thereof. Background technique [0002] Scale inhibitor: It is a kind of agent that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects of metal equipment. The anti-corrosion and anti-scaling agent for cold-changing equipment is formulated with epoxy resin and specific amino resin as the base material, adding appropriate amount of various anti-rust, anti-corrosion and other additives, and is a single component. It has excellent shielding, anti-seepage, anti-rust properties, good scale resistance, thermal conductivity, excellent resistance to weak acids, strong alkalis, organic solvents, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08C02F5/10C02F5/12
Inventor 金可心凌云凌天阳
Owner SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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