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Method for testing property of binary mixed surfactant

A surfactant and performance technology, which is used in the field of testing the performance of binary compound surfactants, can solve the problems of large amount of addition, high cost, and use restrictions, and achieve short evaluation time, reduced evaluation costs, and accurate results. Effect

Inactive Publication Date: 2014-05-21
李兰
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  • Abstract
  • Description
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  • Application Information

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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 property of binary mixed surfactant

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Experimental program
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Effect test

Embodiment

[0026] A method for testing the performance of a binary compound surfactant that the present invention relates to comprises the following steps:

[0027] (a) select the experimental container, and clean and dry it for later use;

[0028] (b) According to the ratio of 1:6~6:1, Span 80 and DTPA were added dropwise into the experimental container respectively;

[0029] (c) Add distilled water to the experimental container respectively, shake well, and dissolve in warm water;

[0030] (d) then slowly drop the configured NaOH respectively to adjust the pH value;

[0031] (e) place the experimental container in a water bath, add barium sulfate scale respectively, and react for a period of time;

[0032] (f) After the reaction is completed, perform suction filtration, dry, weigh, and record relevant reaction phenomena and data;

[0033] (g) Analyze the relevant data and reaction phenomena to obtain the descaling performance of the surfactant.

[0034] The experimental container i...

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Abstract

The invention discloses a method for testing property of a binary mixed surfactant, comprising the following steps: (a) selecting experimental containers; (b) respectively dropwise adding Span80 and DTPA (diethylenetriamine pentaacetic acid) into the experimental containers in the proportion of 1:6-6: 1; (c) respectively adding distilled water into the experimental containers, shaking to be uniform, and dissolving with warm water; (d) regulating the pH value; (e) placing the experimental containers into water bath, respectively adding barium sulfate scale to react for a certain period of time; (f) performing suction filtration, drying and weighing after the reaction is finished, recording related reaction phenomenon and data; (g) analyzing related data and reaction phenomenon so as to obtain the descaling property of the surfactant. The descaling property of the Span80 and DTPA disodium salt binary mixed surfactant can be fast tested, the result is accurate, the evaluation time is short, the evaluation cost is reduced, and theoretical basis is provided for the binary mixed surfactant for descaling.

Description

technical field [0001] The invention relates to a method for testing the performance of a binary compound surfactant. 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 phosphates....

Claims

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Application Information

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