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Method for testing influences of pH value on barium sulfate scale inhibition performance of amino trimethylene phosphonic acid

A technology of aminotrimethylene phosphonic acid and a testing method, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of poor effect of inhibiting barium sulfate scale, and achieve the effects of easy operation, accurate test results and simple test steps

Inactive Publication Date: 2014-04-09
范晶
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  • Abstract
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  • Claims
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Problems solved by technology

[0009] Organic phosphonates are better at inhibiting barium sulfate scale, but less effective at inhibiting barium sulfate scale

Method used

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  • Method for testing influences of pH value on barium sulfate scale inhibition performance of amino trimethylene phosphonic acid

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Embodiment

[0033] This embodiment relates to a test method for the influence of pH value on the barium scale inhibition performance of aminotrimethylene phosphonic acid, comprising the following steps:

[0034] (a) preparing aminotrimethylene phosphonic acid solution;

[0035] (b) prepare sodium sulfate solution and barium chloride solution needed to generate barium sulfate, and the concentration of sulfate ion in the sodium sulfate solution is 1.92g / L, and the concentration of barium ion in the barium chloride solution is 200mg / L;

[0036] (c) Add an equal amount of aminotrimethylene phosphonic acid solution, sodium sulfate solution and barium chloride solution to 6 jars respectively;

[0037] (d) Place all the jars in a constant temperature water bath at 50±1°C, adjust the pH values ​​to 2, 4, 6, 8, 10, and 12, and react for 8 hours;

[0038] (e) After filtering it respectively, measure the amount of barium ions contained in the filtrate;

[0039] (f) Calculate the scale inhibition r...

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Abstract

The invention discloses a method for testing the influences of the pH value on the barium sulfate scale inhibition performance of amino trimethylene phosphonic acid. The method comprises the following steps: 1, preparing an amino trimethylene phosphonic acid solution; 2, preparing a sodium sulfate solution and a barium chloride solution; 3, adding amino trimethylene phosphonic acid, sodium sulfate and barium chloride; 4, reacting in a constant-temperature water bath, and respectively adjusting the pH value to 2,4,6,8,10,12; 5, filtering, and measuring the content of barium ions in the above obtained filtrate; and 6, calculating according to the measured barium ion content to obtain a scale inhibition rate, thus analyzing the influences of the pH value of amino trimethylene phosphonic acid on the barium sulfate scale inhibition performance. The method allows the influences of the pH value on the barium sulfate scale inhibition performance of amino trimethylene phosphonic acid to be rapidly tested, has the advantages of accurate test result, simple test steps and easy operation, and provides a theoretic base for the application of amino trimethylene phosphonic acid to barium sulfate scale processing technologies.

Description

technical field [0001] The invention relates to a test method for the influence of pH value on the performance of barium sulfate scale inhibition of aminotrimethylene phosphonic acid. Background technique [0002] Scale inhibitor: refers to a class 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 on metal equipment potion. 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, etc. It has strong adhesion, and the film layer is bright, flexible, dense, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 范晶
Owner 范晶
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