A kind of non-phosphorus copolymer antiscaling dispersant and preparation method thereof

A technology of scale inhibitor and dispersant and copolymer, which is applied in the field of circulating cooling water treatment, can solve the problems of increasing the difficulty of sterilization and algae killing of circulating water system, affecting the stable operation of circulating water system, and increasing the complexity of circulating water treatment, etc., to achieve Good scale inhibition and dispersion effect, high economic and social benefits, and low cost

Active Publication Date: 2016-06-08
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many domestic patents on polycarboxylate scale inhibitors and dispersants, such as CN01123146 "low molecular weight (meth)acrylic acid (salt) polymer and its preparation method and use", CN94117281.3 "multidimensional polycarboxylate water treatment However, with the continuous development of the industrial circulating cooling water treatment process, the complexity and variability of the circulating water system have gradually deepened, and higher requirements have been put forward for the adaptability of water treatment chemicals.
At the same time, there are more and more types of water treatment chemicals. Sometimes a circulating water system routinely needs to add 5 to 8 kinds of chemicals, which greatly increases the cost of circulating water treatment and increases the complexity of circulating water treatment.
Moreover, adding multiple water quality stabilizers at the same time is likely to produce conflicting effects, reduce the efficacy, and get half the result with twice the effort
In addition, most of the scale inhibitors and dispersants that have been published and applied contain phosphorus. When these scale inhibitors and dispersants enter the circulating water system, they can provide rich nutrients for bacteria and algae in the water, are easily decomposed, and will increase the size of the circulating water system. The difficulty of sterilization and algae removal affects the stable operation of the circulating water system

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of non-phosphorus copolymer antiscaling dispersant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Take by weighing 70g of itaconic acid, 11g of sodium pyrosulfinate, measure 90ml of water, stir to make it dissolve, add in the four-neck flask equipped with agitator, reflux condenser, constant pressure dropping funnel and thermometer; Dissolve 11g of ammonium sulfate in 40ml of water and add to constant pressure funnel Ⅰ; weigh 15g of allylsulfonic acid and 15g of methyl acrylate, dissolve in 70ml of water, mix well, add to constant pressure funnel Ⅱ; At 80°C, add ammonium persulfate solution, allyl sulfonic acid, and methyl acrylate mixed solution dropwise; control the dropwise addition for 2 hours; after the dropwise addition, keep warm at 90°C for 3 hours; cool to obtain the product. The solid content of the obtained copolymer antiscalant dispersant was 37.9%, the molecular weight was 5000, and the antiscalant performance of the product was shown in Table 2.

Embodiment 2

[0065] Take by weighing 80g of itaconic acid, 11g of sodium pyrosulfinate, measure 90ml of water, stir to make it dissolve, add in the four-neck flask equipped with agitator, reflux condenser, constant pressure dropping funnel and thermometer; Dissolve 11g of ammonium sulfate in 40ml of water and add to constant pressure funnel Ⅰ; weigh 10g of allyl sulfonic acid and 10g of ethyl acrylate, dissolve in 60ml of water, mix well, add to constant pressure funnel Ⅱ; At 80°C, add ammonium persulfate solution, allyl sulfonic acid, and ethyl acrylate mixed solution dropwise; control the dropwise addition for 2 hours; after the dropwise addition, keep warm at 90°C for 3 hours; cool to obtain the product. The solid content of the obtained copolymer antiscalant dispersant was 39.1%, and the molecular weight was 5250. The antiscalant performance of the product is shown in Table 2.

Embodiment 3

[0067] Take by weighing 60g of maleic acid, 11g of sodium pyrosulfinate, measure 90ml of water, stir to make it dissolve, add in the four-neck flask equipped with stirrer, reflux condenser, constant pressure dropping funnel and thermometer; Dissolve 11g of ammonium sulfate in 40ml of water and add to constant pressure funnel Ⅰ; weigh 20g of allylsulfonic acid and 20g of 2-methyl methacrylate, dissolve in 80ml of water, mix well, add to constant pressure funnel Ⅱ; heat up, When the temperature rises to 80°C, add ammonium persulfate solution, allylsulfonic acid, and 2-methyl methacrylate mixture dropwise; control the dropwise addition for 2 hours; after the dropwise addition, keep warm at 90°C for 3 hours; cool to obtain the product. The solid content of the obtained copolymer antiscalant dispersant is 36.7%, the molecular weight is 4700, and the antiscalant performance of the product is shown in Table 2.

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 relates to a phosphorus-free copolymer scale inhibiting dispersant and a preparation method thereof. The scale inhibiting dispersant is prepared through the one-step polymerization of 10-20wt% of allyl sulfonic acid, 10-20wt% of acrylate and 60-80wt% of maleic acid and / or itaconic acid in an aqueous solution in a manner of being initiated by inorganic peroxide. The invention further discloses a method for preparing the copolymer scale inhibiting dispersant. According to the copolymer scale inhibiting dispersant prepared by the method, the molecular structure simultaneously contains a plurality of functional groups; in case of lower dosing concentration, better calcium carbonate scale and calcium phosphate scale inhibiting performance and zinc salt stabilizing performance can be obtained, and the ferric oxide dispersity is also better. The copolymer scale inhibiting dispersant is simple in preparation method, low in cost, low in dosage and good in scale inhibiting dispersion effect, does not contain phosphorus, is environmental-friendly, can be widely applied to an industrial circulating cooling water system, and has relatively high economic and social benefits.

Description

technical field [0001] The invention relates to the field of circulating cooling water treatment, in particular to a non-phosphorous copolymer scale inhibitor dispersant and a preparation method thereof. Background technique [0002] With the scale of industrial production and the rapid increase of population, water resources are seriously scarce. Circulating cooling water consumption accounts for 60-70% of industrial water consumption, and reasonable saving of circulating cooling water is the most direct way to reduce industrial water consumption. The main way to save circulating cooling water is to increase the recycling rate of circulating cooling water, which not only increases the concentration multiple, but this will bring serious corrosion and scaling problems to the circulating water system, and puts forward higher requirements for the water treatment process. Require. In order to ensure the normal operation of the circulating water system under the conditions of h...

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 Patents(China)
IPC IPC(8): C08F222/06C08F220/14C08F220/18C08F228/02C08F4/40C02F5/10
Inventor 王亭郦和生李春丽
Owner CHINA PETROLEUM & CHEM CORP
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