Scale inhibitor dispersant for circulating cooling water system and preparation method thereof

A technology of antiscaling dispersant and circulating cooling water, which is applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. It can solve the problem of narrow application range and no performance of antiscaling and dispersing properties, etc. problem, to achieve the effect of less residue, good zinc and iron oxide dispersion ability, and stable reaction process
CN103833150BActive Publication Date: 2015-11-25CHANGZHOU KEWEI TIANSHI ENVIRONMENTAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGZHOU KEWEI TIANSHI ENVIRONMENTAL TECH
Publication Date
2015-11-25

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Abstract

The invention discloses a dirt dispersion agent for a circulating cooling water system and a preparation method of the dirt dispersion agent. The dirt dispersion agent is a terpolymer formed by copolymerizing three monomers such as maleic anhydride, allyl ether and hydroxyl compound by adopting an aqueous solution free radical polymerization method; the mass ratio of the maleic anhydride to the allyl ether to the hydroxyl compound is (1-1.5):(0.5-1):(0.2-0.5); the allyl ether is allyl polyoxyethylene ether, the hydroxyl compound is one or mixture of more than one of hydroxy-propyl acrylate, hydroxyethyl acrylate and sodium 3-allyloxy-2-hydroxy-1-propanesulfonate. The dirt dispersion agent disclosed by the invention is the terpolymer of maleic anhydride, allyl ether and hydroxyl compound, contains carboxy, ether and hydroxy functional groups; the dirt dispersion agent not only has excellent performance preventing calcium carbonate scale, calcium sulfate scale and calcium phosphate scale, but also has good zinc-stabilizing and ferric oxide dispersion capacity.
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Description

technical field

[0001] The invention relates to an industrial water treatment agent, in particular to a scale inhibitor dispersant used in a circulating cooling water system and a preparation method thereof. Background technique

[0002] In the circulating cooling water system of industrial production, due to the increase of water temperature, the evaporation of water, the concentration of various inorganic ions and organic substances, the hardness, alkalinity and pH value of the circulating water naturally increase, and the alkaline earth metal cations contained in the water, such as Ca 2+ , Mg 2+ 、Ba 2+ and small amounts of other cations such as Fe 2+ , Fe 3+ 、Cu 2+ 、Al 3+ , Zn 2+ etc., will react with SO in water 4 2- , CO 3 2- 、HCO 3 - , OH - 、PO 4 3- , SiO 3 2- and other anions to form insoluble inorganic salts such as Ca 3 (PO4) 2 , Ca(CO 3 ) 2 , CaSO 4 , Mg(OH) 2 etc., depositing scale on the surface of pipes and heat exchangers, resulting in r...

Claims

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