阅读说明：本技术 一种高浓度铁离子循环水用无磷水处理剂 (A kind of higher concentration iron recirculated water phosphate-free water treatment agent ) 是由 王向明 左鹏 闫岩 衣建生 于 2019-09-16 设计创作，主要内容包括：本发明公开了一种高浓度铁离子循环水用无磷水处理剂。该无磷水处理剂包括阻垢缓蚀剂和高效分散剂,其添加浓度按补水计为5～20mg/L。所述的阻垢缓蚀剂含：无磷阻垢剂10％～20％,有机缓蚀剂30％～40％,铜缓蚀剂1％～5％,无机缓蚀剂1％～5％,去离子水30％～58％；所述的高效分散剂为：有机聚合物20％～30％,铁离子有机络合剂10％～20％,去离子水50％～70％。该无磷药剂中的有机聚合物可以稳定循环水中的铁离子,避免铁离子在设备表层形成污垢引起垢下腐蚀；铁离子络合剂可以络合循环水中游离的铁离子,干扰Fe<Sup>3+</Sup>与Fe的反应,减轻铁离子引起的腐蚀等循环水问题。(The invention discloses a kind of higher concentration iron recirculated water phosphate-free water treatment agents.The phosphate-free water treatment agent includes anti-incrustation corrosion inhibitor and dispersant with high efficiency, adds concentration by moisturizing and is calculated as 5~20mg/L.The anti-incrustation corrosion inhibitor contains: research of non-phosphorus scale inhibitor 10%~20%, organic inhibitor 30%~40%, copper inhibitor 1%~5%, inorganic inhibitor 1%~5%, deionized water 30%~58%；The dispersant with high efficiency are as follows: organic polymer 20%~30%, iron ion organic complexing agent 10%~20%, deionized water 50%~70%.Organic polymer in the without phosphorus medicament can stablize the iron ion in recirculated water, avoid iron ion from forming dirt on equipment surface layer and cause underdeposit corrosion；The iron ion to dissociate in recirculated water can be complexed in iron ion complexing agent, interfere Fe 3+ With reacting for Fe, mitigate the circulation such as corrosion water problems caused by iron ion.)

1. a kind of higher concentration iron recirculated water phosphate-free water treatment agent, including anti-incrustation corrosion inhibitor and dispersant with high efficiency, two kinds of medicines Agent is not phosphorous.

The anti-incrustation corrosion inhibitor contains: research of non-phosphorus scale inhibitor 10%~20%, organic inhibitor 30%~40%, copper inhibitor 1% ~5%, inorganic inhibitor 1%~5%, deionized water 30%~58%.Wherein research of non-phosphorus scale inhibitor is poly-epoxy succinic acid, poly- day One of aspartic acid, chitosan；Organic inhibitor is imidazoline and its derivative；Copper inhibitor is methyl benzo three One or both of nitrogen azoles, benzotriazole；Inorganic inhibitor is zinc salt.

The dispersant with high efficiency contains: organic polymer 20%~30%, iron ion organic complexing agent 10%~20%, deionization Water 50%~70%.Wherein organic polymer is maleic anhydride, acrylic acid, the multiple copolymer based on acrylamido；Iron Ion organic complexing agent is N, N- double hydroxyethyl laurylamide, lauroyl diethanolamine, hydroxyethylethylene diamine tri-acetic acid three One or both of sodium, citric acid.

2. circulating water quality is characterized in that according to claim 1: iron in circulating ion concentration is greater than 3.0mg/L.

Technical field

The invention belongs to recirculated cooling water fields, are specifically related to a kind of without phosphorus water process of higher concentration iron recirculated water Agent.

Background technique

Recirculated cooling water accounts for 80% or more industrial water, to recirculated water implementation recycle, have significant environmental benefit, Economic benefit and social benefit, current multi-pass, which is crossed, improves cycles of concentration to realize the purpose of water conservation, if but in raw water iron from Sub- concentration is higher, restricts the raising of cycles of concentration.Songhua River Basin, Heilongjiang river part water quality contain a large amount of iron ions, And flocculating effect is excessively poor, and pretreated production water still has higher concentration iron ion, is restricting the same of cycles of concentration promotion When, the Fe in recirculated water³⁺Metallic iron can also be promoted to be dissolved as ferrous iron, accelerate the corrosion of carbon steel；Fe simultaneously³⁺It is hydrolyzed into Fe (OH)₃Colloid, the impurity such as suspended matter in sorption cycle water, forms flocculate, is deposited in heat exchanger surface and forms dirt, increases dirty Also easily cause underdeposit corrosion in the case where dirty thermal resistance.General iron in circulating ion concentration is tens milligrams per liter, works as iron ion When concentration increases to 3mg/L, the equipment corrosion tendency in circulation can be substantially improved, and the corrosion mitigating effect of water treatment agent is substantially Decline is to increase manganese silo in pretreatment unit or using skills such as biological cleanings for the general processing method of this water quality Art (number of patent application 201210079763.0), but problems faced is all to occupy new place, increases engineered, throwing It provides larger.

Summary of the invention

Problem to be solved by this invention be overcome the problems, such as it is of the existing technology, provide it is a kind of be suitable for high concentration iron from The phosphate-free water treatment agent of subcycle water.

Phosphate-free water treatment agent of the present invention, including anti-incrustation corrosion inhibitor and dispersant with high efficiency form as follows:

Anti-incrustation corrosion inhibitor contains: research of non-phosphorus scale inhibitor 10%~20%, organic inhibitor 30%~40%, and copper inhibitor 1%~ 5%, inorganic inhibitor 1%~5%, deionized water 30%~58%.Wherein research of non-phosphorus scale inhibitor is poly-epoxy succinic acid, poly- asparagus fern One of propylhomoserin, chitosan；Organic inhibitor is imidazoline and its derivative；Copper inhibitor is three nitrogen of methyl benzo One or both of azoles, benzotriazole；Inorganic inhibitor is zinc salt.

Dispersant with high efficiency contains: organic polymer 20%~30%, iron ion organic complexing agent 10%~20%, deionized water 50%~70%.Wherein organic polymer is maleic anhydride, acrylic acid, the multiple copolymer based on acrylamido；Iron from Sub- organic complexing agent be N, N- double hydroxyethyl laurylamide, lauroyl diethanolamine, trisodium hydroxyethylene diamine triacetate, One or both of citric acid.

The addition concentration of two kinds of components based on moisturizing be respectively 5~20mg/L, 5~20mg/L,

The present invention also provides the preparation method of the without phosphorus water chemical treatment agent of above-mentioned higher concentration iron recirculated water, this method Include:

1) it corrosion inhibiting and descaling agent preparation method: according to corrosion inhibiting and descaling agent component proportion, is added needed for formula ratio into reaction kettle Deionized water, open stirring, then sequentially add research of non-phosphorus scale inhibitor, organic inhibitor, copper inhibitor, inorganic inhibitor fills Divide after being stirred until homogeneous, is made after being cooled to room temperature；

2) it dispersant with high efficiency preparation method: according to dispersant with high efficiency component proportion, is added needed for formula ratio into reaction kettle Deionized water, open stirring, then sequentially add organic polymer dispersing agents, iron ion organic complexing agent is sufficiently stirred, cold But it is made to after room temperature.

Research of non-phosphorus scale inhibitor in medicament can be adsorbed on inorganic scale crystal, be distorted crystal, or make big crystals Stress increase, so that crystal be made to be easy to rupture, hinder the growth of dirt.Organic polymer can stablize the iron in recirculated water from Son avoids iron ion from forming dirt on equipment surface layer, causes underdeposit corrosion；Circulation can be complexed in iron ion complexing agent in medicament Free iron in water interferes Fe³⁺With reacting for Fe, mitigate corrosion caused by iron ion.The technology is set not increasing pretreatment Standby, place and it is engineered in the case where, can solve corrosion that iron ion is caused etc. circulation water problems.

Compared with prior art, the present invention the beneficial effect is that:

1) recirculated water uses medicament of the present invention, not will increase new civil engineering cost and engineered expense；

2) it is greater than 3mg/L in iron in circulating ion concentration, still there is good corrosion-mitigation scale-inhibition ability；

3) product of the present invention is not phosphorous, avoids phosphorus and discharges exceeded problem, alleviates environmental protection of enterprise pressure.

Specific embodiment

Technical solution of the present invention and technical effect are described further combined with specific embodiments below.