Preparation method of slow release non-phosphorus scale inhibitor for industrial circulating cooling water

A technology of phosphorus-free scale inhibitor and circulating cooling water, applied in the field of scale inhibitor, can solve the problems of affecting the heat exchange effect of water cooler, eutrophication, consumption of bactericide, etc., to improve the effect of slow-release scale inhibitor and improve utilization rate, the effect of prolonging the action time

Inactive Publication Date: 2018-09-04
ANHUI ZHIBO NEW MATERIAL TECH CO LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphorus-based antiscalants have the potential to form phosphate scale during use, which affects the heat transfer effect of the water cooler during long-term operation; and the phosphorus-based formula promotes the reproduction of microorganisms in the circulating water, consuming a large amount of fungicides, and a large amount of phosphorus Emissions can easily lead to eutrophication of receiving water bodies

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Preparation of antiscaling content: mix 5g of water treatment grade polyglutamic acid and 2g of sodium gluconate evenly, and dry granulate to make 50-mesh granules, and then make 325-mesh micropowder through ultrafine pulverizer, The antiscalant content is obtained;

[0023] (2) Preparation of sustained-release carrier: 5g polydextrose was dissolved in water to make an aqueous solution with a concentration of 10wt%, while 5g lauric acid was dissolved in methanol to make a saturated solution, and the aqueous solution of polydextrose was heated to reflux state and kept stirring , add dilute sulfuric acid dropwise to adjust the pH value of the solution to 5, then add dropwise methanol solution of lauric acid, continue to reflux and keep stirring after dropping, naturally cool to room temperature after the reaction, and then transfer to 0-5°C environment to seal and stand for 12h , filtered, and the resulting filter residue is sent to a freeze dryer, and the solid obtai...

Embodiment 2

[0026] (1) Preparation of anti-scaling content: mix 5g of water treatment grade polyglutamic acid and 2.5g of sodium gluconate evenly, and make 50-mesh granules through dry granulation, and then make 325-mesh micropowder through ultrafine pulverizer , that is, the antiscalant content;

[0027] (2) Preparation of sustained-release carrier: 5g polydextrose was dissolved in water to make an aqueous solution with a concentration of 10wt%, while 5g lauric acid was dissolved in methanol to make a saturated solution, and the aqueous solution of polydextrose was heated to reflux state and kept stirring , add dilute sulfuric acid dropwise to adjust the pH value of the solution to 5, then add dropwise methanol solution of lauric acid, continue to reflux and keep stirring after dropping, naturally cool to room temperature after the reaction, and then transfer to 0-5°C environment to seal and stand for 12h , filtered, and the resulting filter residue is sent to a freeze dryer, and the sol...

Embodiment 3

[0030] (1) Preparation of anti-scaling content: mix 5g of water treatment grade polyglutamic acid and 2.5g of sodium gluconate evenly, and make 50-mesh granules through dry granulation, and then make 325-mesh micropowder through ultrafine pulverizer , that is, the antiscalant content;

[0031] (2) Preparation of sustained-release carrier: 5g polydextrose was dissolved in water to make an aqueous solution with a concentration of 10wt%, while 5g lauric acid was dissolved in methanol to make a saturated solution, and the aqueous solution of polydextrose was heated to reflux state and kept stirring , add dilute sulfuric acid dropwise to adjust the pH value of the solution to 5, then add dropwise methanol solution of lauric acid, continue to reflux and keep stirring after dropping, naturally cool to room temperature after the reaction, and then transfer to 0-5°C environment to seal and stand for 12h , filtered, and the resulting filter residue is sent to a freeze dryer, and the sol...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a slow release non-phosphorus scale inhibitor for industrial circulating cooling water and relates to the technical field of scale inhibitors. The preparation method comprises the following steps: (1) preparation of a scale inhibition content, (2) preparation of a slow release carrier, and (3) preparation of the slow release non-phosphorus scale inhibitor. According to the method, the slow release carrier is prepared through an esterification reaction of polydextrose and lauric acid; the prepared slow release carrier as a skeleton structure, exerts a slow release effect and controls a release rate of the scale inhibition content so as to ensure a long-term scale inhibition effect; the prepared slow release non-phosphorus scale inhibitor solves the technical problems that the conventional phosphorus scale inhibitor easily generates phosphate scale, promotes microorganism reproduction in the circulating water and results in eutrophication of receiving water.

Description

Technical field: [0001] The invention relates to the technical field of scale inhibitors, in particular to a preparation method of a slow-release phosphorus-free scale inhibitor for industrial circulating cooling water. Background technique: [0002] Industrial circulating water is mainly used in the cooling water system, also known as circulating cooling water, which accounts for more than 90% of the total water consumption. Improving its reuse rate is an important means of saving water and energy. Due to the continuous evaporation of the circulating cooling water during the cooling process, the salt concentration in the water continues to increase, exceeding the solubility of some salts and depositing on the system pipe wall to form scale. Calcium carbonate, calcium phosphate, magnesium silicate and other scales are common. The generation of scale greatly reduces the heat transfer efficiency. The 0.5mm thick scale can reduce the heat transfer coefficient by about 18%. [...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C02F103/02
CPCC02F5/12C02F2103/023
Inventor 汪六一
Owner ANHUI ZHIBO NEW MATERIAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap