Biological dispersing agent for circulating cooling water and preparation method thereof

A circulating cooling water and dispersant technology, which is applied to chemical instruments and methods, natural water treatment, non-polluted water treatment, etc., can solve the problems affecting the normal operation of circulating cooling water, failure, and the loss of the effect of the two agents, and achieve good results. Broad-spectrum bactericidal effect, enhanced dispersing ability, and good wetting and penetrating effects

Active Publication Date: 2017-08-18
河北广通源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing biodispersants are usually composed of surfactants that neutralize charged colloidal particles and enable them to redissolve or suspend, but these surfactants associate with anionic scale and corrosion inhibitors commonly used in circulating cooling water systems reaction, resulting in the loss or even failure of the effects of the two agents, affecting the normal operation of the circulating cooling water

Method used

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  • Biological dispersing agent for circulating cooling water and preparation method thereof
  • Biological dispersing agent for circulating cooling water and preparation method thereof
  • Biological dispersing agent for circulating cooling water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This example relates to a biodispersant for circulating cooling water and its preparation.

[0032] A group of biodispersant for circulating cooling water, its raw material formula is shown in the following table:

[0033]

[0034]

[0035] Prepare as follows:

[0036]a. Take polyaspartic acid with a molecular weight of 3000-5000, add it to the reaction vessel, add polyoxyethylene ether surfactant under stirring, stir at room temperature 25°C for 30-60min, make it mix evenly, and get Solution A;

[0037] b. Put sodium styrene sulfonate-acryloyl morpholine polymer and / or acryl alcohol-acryloyl morpholine polymer into another reaction vessel, add deionized water, the amount of water added can be adjusted according to the actual situation, and it needs to be ensured The viscosity of the solution during the stirring process is suitable, and the solid content of the prepared biodispersant is ≥ 40%; stir at room temperature 25°C for 30-60min, and adjust the pH to abou...

Embodiment 2

[0051] This example relates to Example 1, that is, the comparison of the treatment effects of the biodispersant of the present invention and the biodispersant of the comparative example on circulating cooling water.

[0052] The main indicators of the water quality of the circulating cooling water system of a coking plant are as follows:

[0053] water quality index hydrating Recycled water Calcium hardness (as CaCO3), mg / L 216.20 463.09 Total hardness (as CaCO3), mg / L 324.29 730.74 Total Alkalinity (as CaCO3), mg / L 163.01 364.16 Chloride ion mg / L 39.70 97.27 PH value 7.82 8.84 Turbidity NTU 3.2 15.0 COD 14.7 38.0

[0054] The biodispersant of Example 1 and the biodispersant of Comparative Example were used together with fungicides and scale and corrosion inhibitors to carry out water quality treatment simulation experiments.

[0055] In the following simulation experiments, the laboratory evaluation method of b...

Embodiment 3

[0067] This example relates to the evaluation of the application effect of the biodispersant of the present invention in an industrial circulating cooling water system.

[0068] The biodispersant of Example 1.6 was tested on-site, and compared with the field application effect of Comparative Example 1.3, which is a commonly used biodispersant in this field.

[0069] The performance of the agent was evaluated by the extracellular polymer method and the method of measuring the amount of biological slime. The determination of polysaccharide and nucleic acid content is the same as the experimental operation steps in Example 2. The determination of the amount of biological slime is carried out in accordance with the national standard GB / T 14643.1-2009 for the analysis method of industrial circulating cooling water.

[0070] Field application test conditions: the circulation volume of the circulating water system is 6500m 3 / h, system volume 3000m 3 , the concentration factor is ...

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Abstract

The invention discloses a biological dispersing agent for circulating cooling water. The biological dispersing agent is prepared from, by weight, 30-60 parts of sodium styrenesulfonate-acryloylmorpholine polymer and/or propylene alcohol-acryloylmorpholine polymer, 10-30 parts of polyaspartic acid, and 1-10 parts of polyoxyethylene ether surfactants. The obtained biological dispersing agent for circulating the cooling water greatly enhances the penetrating capacity of organic matter, and the dispersing capacity of inorganic foulant and organic matter sedimentation; the penetrability of bactericide to biological sludge is improved; the bactericidal effect is improved, so as to optimize the removal effect on the tube wall microorganism and biological sludge. In addition, the biological dispersing agent has a mutual compatibility with scale and corrosion inhibitor and other water treatment agents used in circulating cooling water, and can facilitate the other water treatment agents to play the functions. The biological dispersing agent has the advantages of being simple in preparation method; being safe and environment-friendly; being biodegradable; having wide application prospect.

Description

technical field [0001] The invention relates to the technical field of water treatment agents, in particular to a biodispersant for circulating cooling water, and at the same time, to a preparation method of the biodispersant. Background technique [0002] Industrial circulating cooling water, because there are a large number of organic and inorganic compounds in the water, provides sufficient nutrients for the reproduction of microorganisms, and it is easy to breed biological slime under suitable water temperature and air environment. A large amount of biological slime in the circulating cooling water system not only causes difficulties in the maintenance and management of the system equipment, but also reduces the heat transfer effect of the system, causes direct or indirect damage to the system equipment, reduces the service life of the equipment, and brings Economic losses and production safety hazards. Biological slime is mainly composed of microbial cells and polysacc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C02F103/02
CPCC02F5/12C02F2103/023C02F2303/04C02F2303/20C02F2305/04
Inventor 李永广贾志远马红刚刘思黄春玲
Owner 河北广通源环保科技有限公司
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