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Multifunctional drag reduction agent of circulating water pipeline

A multi-functional, circulating water technology, applied in the field of fine chemicals, can solve the problems of high raw material prices, corrosion and lack of long-term stability data, etc., and achieve the effects of short investment recovery period, obvious drag reduction and energy saving effect, and low price

Inactive Publication Date: 2009-09-23
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a low-cost multifunctional drag reducer with multiple functions such as corrosion inhibition, scale inhibition, sterilization, drag reduction and energy saving, so as to solve the problem of corrosion and long-term stability of pipeline equipment caused by existing pipeline drag reducers. Due to the lack of permanent data and the high price of raw materials, it is difficult to popularize and apply it in small and medium circulating water systems.

Method used

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  • Multifunctional drag reduction agent of circulating water pipeline
  • Multifunctional drag reduction agent of circulating water pipeline
  • Multifunctional drag reduction agent of circulating water pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In a 250ml beaker, take by weighing commercially available industrial dodecyl dimethyl benzylamine chloride (content 40%) 62.5g, commercially available industrial coconut acid diethanolamide 10.0g, commercially available industrial hydroxyethylidene diphosphine Sodium bicarbonate (content 70%) 7.1g and water 20.4g, stirring and dissolving, obtain 100g 40% multifunctional drag reducer. Weigh 1.0g, 2.0g, 3.0g, 4.0g and 5.0g and dissolve them in 1000ml tap water respectively, and measure the viscosity with NDJ-79 rotary viscometer at 750rpm at room temperature (25°C) for preliminary evaluation, 5 times The test results are shown in Table 1. When the drag reducer is above 1.2g / L, the viscosity of the aqueous solution decreases. It can be seen that when the drag reducer concentration is 1.2g / L, the concentration of drag reducer micelles is reached. The added concentration of the multifunctional drag reducer at room temperature is initially selected as 1.2g. / L.

[0041] Ta...

Embodiment 2

[0044] In a 2500ml beaker, take by weighing commercially available industrial dodecyl dimethyl benzylamine chloride (content 40%) 450g, commercially available industrial coconut acid diethanolamide 200g, commercially available industrial sodium hydroxyethylidene diphosphonate (content 70%) 27g, organic silicon defoamer 1.0g and water 322g, stirring and dissolving, obtain 1000g 40% multifunctional drag reducer. Performance evaluation of the drag reducer was performed on a device with a circulating water volume of 200L, a test pipe diameter of DN20, and a test pipe length of 6000mm. Add 200g of the prepared multifunctional drag reducer at room temperature (25°C) at a circulating water flow rate of 3.2m / s to measure the drag reduction rate, and then add 200g of the drag reducer each time to measure the drag reduction rate. The results of 5 tests As shown in table 2.

[0045] Table 1 Effect of drag reducer concentration on drag reduction rate

[0046] serial number

[00...

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Abstract

The invention relates to a multifunctional drag reduction agent of a circulating water pipeline, consisting of industrial circulating water bactericidal algicide having drag reduction function, industrial circulating water corrosion and scale inhibitor having the drag reduction function and other industrial circulating water treating agents. Preferable formulation of the multifunctional drag reduction agent comprises chloridized dodecyl dimethyl benzyl amine bactericidal algicide, lauric acid diethanol amide corrosion and scale inhibitor and sodium hydroxy ethylidene diphosphonic which are put into a circulating water system for once according to the proportion of 0.4-2.0kg / t of the circulating water quantity. The multifunctional drag reduction agent has multiple functions such as corrosion and scale inhibition, sterilization, drag reduction, energy conservation and the like, and is low in price, so as to be suitable for the drag reduction and the energy conservation of air conditioners and industrial devices, thus stabilizing the heat transfer efficiency of equipment, reducing pipe resistance and lowering the power consumption of a circulation pump by over 50%.

Description

technical field [0001] The invention relates to a multifunctional drag reducing agent for circulating water pipelines, in particular, it is composed of an industrial circulating water sterilization and algicide with drag reducing function, an industrial circulating water corrosion and scale inhibitor with drag reducing function and other circulating water treatment agents A drag reducer with multiple functions belongs to the field of fine chemicals. Background technique [0002] Air-conditioning equipment, central heating pipelines and circulating water systems of industrial production plants generally have high energy consumption problems, and the energy consumption of circulating pumps is as high as 30%-50% of the system energy consumption. my country is developing in the direction of urbanization and industrialization, and the task of energy conservation and emission reduction is heavy. Adding pipeline drag reducer to the circulating water system is a simple and easy ener...

Claims

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Application Information

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IPC IPC(8): C02F5/12
Inventor 李建生刘炳光喻宏林杨瑞静
Owner TIANJIN VOCATIONAL INST
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