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Method for testing influence on descaling effect of DTPA (Diethylene Triamine Pentacetate Acid) solution caused by dosage

A test method and solution technology are applied in the field of testing the effect of DTPA solution addition on the descaling effect, which can solve the problems of large amount of addition, high cost, use restrictions, etc., so as to reduce test costs, accurate test results, and test steps simple effect

Inactive Publication Date: 2014-05-21
唐丽华
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Problems solved by technology

This kind of descaling agent mainly prevents scale through chelation, so the amount added is large and the cost is high, so its use is limited in industrial processes with large amounts of water

Method used

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  • Method for testing influence on descaling effect of DTPA (Diethylene Triamine Pentacetate Acid) solution caused by dosage

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Embodiment

[0027] A kind of DTPA solution addition amount that the present invention relates to the test method that the descaling effect influences, comprises the following steps:

[0028] (a) First, clean several experimental containers for subsequent use;

[0029] (b) Then, add a certain amount of barium scale in the experimental container;

[0030] (c) prepare a descaling agent DTPA solution of a certain concentration;

[0031] (d) add the descaling agent DTPA solution of different amounts respectively in experimental container;

[0032] (e) adjusting the pH of the solution;

[0033] (f) Place the experimental container in a water bath at a certain temperature and heat it for a period of time:

[0034] (g) According to the experimental results, calculate the descaling rate respectively, and through the calculated descaling rate, analyze the influence of the amount of DTPA solution on the descaling effect.

[0035] The experimental container is a beaker.

[0036] The barium scale...

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Abstract

The invention discloses a method for testing influence on the descaling effect of a DTPA (Diethylene Triamine Pentacetate Acid) solution caused by dosage. The method comprises the steps: (a) firstly, cleaning a plurality of experimental containers for later use; (b) then, adding a certain amount of barium scale into each experimental container; (c) preparing a DTPA descaling agent solution of certain concentration; (d) adding a different volume of DTPA descaling agent solution into each experimental container; (e) adjusting the pH value of the solution; (f) heating the experimental containers for a period of time in water baths with certain temperature; (g) respectively calculating the descaling ratio through experimental results, and analyzing the influence on the descaling effect of the DTPA solution caused by dosage through the calculated descaling ratio. The method has the advantages that the influence on the descaling effect of the DTPA solution caused by the dosage can be tested quickly, the test results are accurate, the test steps are simple, the test cost is lowered greatly, and a theoretical basis is provided for applying the DTPA solution to descaling.

Description

technical field [0001] The invention relates to a test method for the effect of adding DTPA solution on the descaling effect. Background technique [0002] Descaling agent is a chemical preparation that removes scale, dirt and other stains, and is generally composed of multiple components. Industrial descaling agents are mainly used to remove dirt in heat exchange equipment, boilers, etc. [0003] Common types of descaling agents and their characteristics: [0004] (1) Inorganic polyphosphate. This type is the earliest descaling agent used, and its use has been restricted abroad. There are one or more repeated P-O-P bonds in its molecule, which can be divided into chain polyphosphate and cyclic polyphosphate. The disadvantage of inorganic polyphosphate is that it is easy to be hydrolyzed by moisture to form orthophosphate, especially at high temperature and high pH value, and it will react with divalent cations such as Ca2+, Mg2+, etc. to scale. [0005] (2) Organic pho...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 唐丽华
Owner 唐丽华
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