CN103058399A - Efficient alkyl ether carboxylate type dirt dispersion agent and application thereof - Google Patents
Efficient alkyl ether carboxylate type dirt dispersion agent and application thereof Download PDFInfo
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- CN103058399A CN103058399A CN2013100188317A CN201310018831A CN103058399A CN 103058399 A CN103058399 A CN 103058399A CN 2013100188317 A CN2013100188317 A CN 2013100188317A CN 201310018831 A CN201310018831 A CN 201310018831A CN 103058399 A CN103058399 A CN 103058399A
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Abstract
The invention relates to an alkyl ether carboxylate type dirt dispersion agent. The dirt dispersion agent contains carboxyl and ether group functional groups. The invention aims to provide an application of the dirt dispersion agent disclosed by the invention to an industrial water treatment system, particularly a circulating cooling water system. The invention aims to provide an application method of the dirt dispersion agent disclosed by the invention; when being used, the dirt dispersion agent can be used separately and can also be compounded with other dirt dispersion agents or corrosion inhibitors to be used. According to the alkyl ether carboxylate type dirt dispersion agent, the alkyl ether carboxylate has very high tolerance on calcium and has a good dirt dispersion effect on difficultly-dissolved salts including calcium carbonate dirt, calcium sulfate dirt, calcium phosphate dirt and the like in the water under the conditions of high hardness, high alkali, high temperature and high pH (Potential of Hydrogen); and the alkyl ether carboxylate type dirt dispersion agent has the advantages of safety in use, low toxicity, easiness for biological degradation and environmental friendliness, is applicable to automatic medicine adding control, and is convenient to use, and so on.
Description
Technical field
The present invention relates to a kind of chemical reagent for Treatment of Industrial Water and application thereof, relate more specifically to a kind of alkyl ether carboxy acid salt's dirt dispersion agent and application in industrial circulating cooling water is processed.
Background technology
The serious problems that recirculating cooling water system often runs into are dirt depositions.Dirt mainly comprises incrustation scale, the metal oxide that produces because of corrosion and the deposition fouling that causes because bringing silt into.Incrustation scale in the water coolant generally is comprised of slightly soluble salt such as calcium carbonate, calcium sulfate, calcium phosphate and Calucium Silicate powder (magnesium).The solubleness of these salt is very little, and their solubleness reduces with the rising of pH value and water temperature, thereby is deposited on especially easily on the heat-transfer surface, and what impact was conducted heat normally carries out, and heat exchanger efficiency is descended, and consumes and the waste energy.Even interchanger is stopped up, and systemic resistance increases, and water pump and efficiency of cooling tower descend, and the energy consumption of production increases, and production declining in the work-ing life of minimizing equipment, easily causes production safety hidden danger.In addition, dirt can cause that also indirect burn into grows microorganism and causes the water delivery difficulty.
Fouling is the result of slightly soluble salt crystalline deposit in the water, add crystal growing process and crystal habit that dirt dispersion agent can change slightly soluble salt in the water, make it be in the steady state of corresponding oversaturated Jie and be dispersed in water, be difficult for adhering to, just can avoid fouling or alleviate the degree of fouling.Scale inhibitors commonly used has natural dispersion agent (such as starch, tannin and xylogen etc.), phosphonates (such as ATMP, HEDP, EDTMPS, DTPMPA, PBTCA etc.), Organophosphonate, polycarboxylic acid (such as PAA, HPMA, AA/AMPS etc.), although these dirt dispersion agents have solved the scale problems of recirculating cooling water system in a degree, but still exist various defectives, poor such as scale inhibition and dispersion performance under high rigidity, high alkalinity, high pH and high-temperature condition, readily biodegradable not, can serious environment pollution, comply with one's wishes not to the utmost etc. with other corrosion inhibiting and descaling agent compound property.
Summary of the invention
The object of the present invention is to provide a kind of alkyl ether carboxy acid salt's high efficiency dirt dispersion agent, be one or more mixtures that mix with arbitrary proportion among the alkyl ether carboxy acid salt, have higher dispersive ability and higher calcium tolerance, under high rigidity, high alkalinity, high pH value and hot conditions, still can effectively control fouling.The present invention also aims to provide described high efficiency dirt dispersion agent to be applied to recirculated cooling water or oil field reinjection water processing.
For achieving the above object, the invention provides a kind of efficient alkyl ether carboxy acid salt's type dirt dispersion agent, its chemical formula is RO (CH
2CH
2O)
n(CH
2)
mCOOM, wherein R is C
4-18Branched-chain or straight-chain alkyl, nonyl phenolic group or alkylolamide base; N=2 ~ 20; M=1 ~ 3; M=Na
+, K
+, NH
4 +Or ethanolamine salt.
Usually, described dispersant with high efficiency comprises alcohol ether carboxylate (AEC), alkyl phenol ether carboxylate salt (APEC) and Amide Ether Carboxylates (AMEC).
Alkyl ether carboxy acid salt's type dirt dispersion agent of the present invention is one or more mixtures that mix with arbitrary proportion among the alkyl ether carboxy acid salt.
During use, alkyl ether carboxy acid salt's dirt dispersion agent of the present invention adds concentration and counts 1 ~ 1000mg/L by system's water yield in recirculated water, especially take 5 ~ 200mg/L as good.
Alkyl ether carboxy acid salt's dirt dispersion agent of the present invention can use separately when processing process water, also can with other dirt dispersion agent, the composite use of inhibiter.
Wherein said other dirt dispersion agent is one or more among starch, tannin, xylogen, Mierocrystalline cellulose, polyacrylic acid, polymethyl acrylic acid, polymaleic anhydride, poly aspartic acid, poly-epoxy succinic acid, acrylic copolymer, toxilic acid analog copolymer, maleic anhydride analog copolymer, sulphonic acids, sulfonic acid esters, sulfuric acid ester multipolymer, poly-phosphate, organic phosphoric acid, organic phosphine carboxylic acid and the phosphinocarboxylic acid.
Described inhibiter is one or more in chromic salt, poly-phosphate, nitrite, silicate, molybdate, tungstate, zinc salt, organic multicomponent phosphoric acid, aromatic series azole, ferrous sulfate, organic amine, aluminium system, tannin and the sulfonated lignin.
High efficiency dirt dispersion agent of the present invention is widely used in the Treatment of Industrial Water such as oil field reinjection water processing, particularly industrial cycle water treatment.
A kind of alkyl ether carboxy acid salt's dirt dispersion agent of the present invention is compared with other dirt dispersion agents has following advantage: 1. applied widely.Can be widely used in various source qualities, calcium is had very high tolerance, under, high temperature hard, high-alkali at height and the high pH condition, the difficulty soluble salts such as the calcium carbonate scale in the water, calcium sulfate scale and calcium phosphate scale be had good scale inhibition dispersion effect.2. scale inhibition performance is high, has simultaneously certain corrosion inhibition concurrently.Alkyl ether carboxy acid salt's dirt dispersion agent among the present invention contains the functional groups such as ether and carboxyl simultaneously.Carboxyl not only has sequestering power to calcium, magnesium, barium, iron, copper plasma, can also disturb the normal alignment of lattice to produce lattice distortion simultaneously in the inorganic scale crystallisation process.Ehter bond in the dirt dispersion agent of the present invention can increase polymer molecule in the growth of dirt grain surface sorption and then prevention crystal, can also increase simultaneously hydration and the dissemination of Scale inhibitors molecule, particularly resistance calcium carbonate scale, calcium sulfate scale and dispersion foundry loam be had synergism.3. good with the composite result of use of other water treatment agents.4. use that safety, toxicity are low, readily biodegradable, environmental protection, be applicable to Automatic Dosing control, easy to use.
Embodiment
Following embodiment will help to illustrate the present invention, but be not limited to scope in the table.
The used test raw water quality of following embodiment 1-21 and experiment water distribution water quality see Table 1.
The table 1 former water of test and experiment water distribution matter matter
| Water quality | Ca 2+ | Total alkalinity | Total hardness | Cl - | SO 4 2- |
| Former water | 110 | 160 | 182 | 15 | 38 |
| Concentrated 2 times of experiment water distribution 1() | 211 | 314 | 370 | 30 | 80 |
| Concentrated 5 times of experiment water distribution 2() | 512 | 765 | 947 | 75 | 186 |
Annotate: pH is without unit, and specific conductivity is μ s/cm, and its counit is mg/L, Ca
2+, total alkalinity, total hardness be all with CaCO
3Meter.
The scale inhibition performance calculation formula is: scale inhibition performance=(C-C
0)/(C
1-C
0) * 100%, wherein C: actual measurement Ca
2+Concentration (mg/L); C
0: the Ca of blank sample
2+Concentration (mg/L); C
1: the Ca in the test water distribution
2+Concentration (mg/L).
The average corrosion rate calculation formula is: F=(C* Δ W)/(A*T* ρ), wherein C: computational constant, take mm/a(millimeter/year) during as unit, C=8.76*10
7Δ W: the corrosion weight loss of test specimen (g); A: the area (cm of test specimen
2); T: corrosion test time (h); ρ: the density (kg/m of material for test
3).
Embodiment 1
Take by weighing a certain amount of AEC and be dissolved in the water, be mixed with liquid medicine.Add in test water distribution 1 with the drug concentration of the liquid medicine for preparing by 1mg/L.
Embodiment 2
Take by weighing a certain amount of AEC and be dissolved in the water, be mixed with liquid medicine.Add in test water distribution 1 with the drug concentration of the liquid medicine for preparing by 5mg/L.
Embodiment 3
Take by weighing a certain amount of AEC and be dissolved in the water, be mixed with liquid medicine.Add in test water distribution 1 with the drug concentration of the liquid medicine for preparing by 30mg/L.
Embodiment 4
Take by weighing a certain amount of AEC and be dissolved in the water, be mixed with liquid medicine.Add in test water distribution 1 with the drug concentration of the liquid medicine for preparing by 200mg/L.
Embodiment 5
Take by weighing a certain amount of AEC and be dissolved in the water, be mixed with liquid medicine.Add in test water distribution 1 with the drug concentration of the liquid medicine for preparing by 1000mg/L.
Embodiment 6
Take by weighing a certain amount of AEC and be dissolved in the water, be mixed with liquid medicine.Add in test water distribution 2 with the drug concentration of the liquid medicine for preparing by 30mg/L.
Embodiment 7
Take by weighing a certain amount of AEC, APEC and AMEC, be dissolved in any proportion in the water, be mixed with liquid medicine.Add in test water distribution 1 with the drug concentration of the liquid medicine for preparing by 1mg/L.
Embodiment 8
Take by weighing a certain amount of AEC, APEC and AMEC, be dissolved in any proportion in the water, be mixed with liquid medicine.Add in test water distribution 1 with the drug concentration of the liquid medicine for preparing by 30mg/L.
Embodiment 9
Take by weighing a certain amount of AEC, APEC and AMEC, be dissolved in any proportion in the water, be mixed with liquid medicine.Add in test water distribution 1 with the drug concentration of the liquid medicine for preparing by 1000mg/L.
Embodiment 10
Take by weighing a certain amount of AEC, APEC and AMEC, be dissolved in any proportion in the water, be mixed with liquid medicine.Add in test water distribution 2 with the drug concentration of the liquid medicine for preparing by 30mg/L.
Embodiment 11
Take by weighing a certain amount of AEC and 2-phosphate butane-1,2,4-tricarboxylic acid (PBTCA) is dissolved in the water, is mixed with liquid medicine.Be that to be 10mg/L add in test water distribution 2 for 30mg/L and PBTCA with the liquid medicine for preparing by AEC concentration.
Embodiment 12
Take by weighing a certain amount of AEC, APEC, AMEC and PBTCA and be dissolved in the water, be mixed with liquid medicine.Be that to be 10mg/L add in test water distribution 2 for 30mg/L and PBTCA with the liquid medicine for preparing by alkyl ether carboxylic acid's salt concn.
Embodiment 13
Take by weighing a certain amount of AEC and lignin dissolution in water, be mixed with liquid medicine.Be that to be 50mg/L add in test water distribution 2 for 30mg/L and xylogen with the liquid medicine for preparing by AEC concentration.
Embodiment 14
Take by weighing a certain amount of AEC and polyacrylic acid (PAA) and be dissolved in the water, be mixed with liquid medicine.Be that to be 10mg/L add in test water distribution 2 for 30mg/L and PAA with the liquid medicine for preparing by AEC concentration.
Embodiment 15
Take by weighing a certain amount of AEC and vinylformic acid/Propylene glycol monoacrylate (AA/HPA) and be dissolved in the water, be mixed with liquid medicine.Be that to be 10mg/L add in test water distribution 2 for 30mg/L and AA/HPA with the liquid medicine for preparing by AEC concentration.
Embodiment 16
Take by weighing a certain amount of AEC and Sodium hexametaphosphate 99 and be dissolved in the water, be mixed with liquid medicine.Be that to be 10mg/L add in test water distribution 2 for 30mg/L and Sodium hexametaphosphate 99 with the liquid medicine for preparing by AEC concentration.
Embodiment 17
Do not add any medicament, the erosion rate of test carbon steel lacing film in test water distribution 1.Test conditions: the test water temperature is 50 ℃, and the lacing film linear velocity is 0.25m/s, and the corrosion test time is 72 hours.
Embodiment 18
Being 30mg/L by alkyl ether carboxylic acid's salt concn adds to test water distribution 1, the erosion rate of test carbon steel lacing film.Test conditions: the test water temperature is 50 ℃, and the lacing film linear velocity is 0.25m/s, and the corrosion test time is 72 hours.
Embodiment 19
Be that to be 2mg/L add the erosion rate of test carbon steel lacing film in test water distribution 1 for 30mg/L and zinc chloride by alkyl ether carboxylic acid's salt concn.Test conditions: the test water temperature is 50 ℃, and the lacing film linear velocity is 0.25m/s, and the corrosion test time is 72 hours.
Embodiment 20
Be that 30mg/L and benzotriazole (BTA) add in test water distribution 1 for 2mg/L by alkyl ether carboxylic acid's salt concn, the erosion rate of test carbon steel lacing film.Test conditions: the test water temperature is 50 ℃, and the lacing film linear velocity is 0.25m/s, and the corrosion test time is 72 hours.
Embodiment 21
Be that 30mg/L and Sodium hexametaphosphate 99 15mg/L add in test water distribution 1 by alkyl ether carboxylic acid's salt concn, the erosion rate of test carbon steel lacing film.Test conditions: the test water temperature is 50 ℃, and the lacing film linear velocity is 0.25m/s, and the corrosion test time is 72 hours.
Test by the above-mentioned concentration that adds, scale inhibition disperses and corrosion mitigating effect sees Table 2.
The scale inhibitor effect of table 2 medicament
| Embodiment | The test water distribution | Scale inhibition performance (%) | Average corrosion rate mm/a |
| 1 | 1 | 38.1 | / |
| 2 | 1 | 89.4 | / |
| 3 | 1 | 98.1 | / |
| 4 | 1 | 99.0 | / |
| 5 | 1 | 99.5 | / |
| 6 | 2 | 97.9 | / |
| 7 | 1 | 42.3 | / |
| 8 | 1 | 98.2 | / |
| 9 | 1 | 99.5 | / |
| 10 | 2 | 98.4 | / |
| 11 | 2 | 98.9 | / |
| 12 | 2 | 99.0 | / |
| 13 | 2 | 99.2 | / |
| 14 | 2 | 99.3 | / |
| 15 | 2 | 99.8 | / |
| 16 | 2 | 99.4 | / |
| 17 | 1 | / | 0.310 |
| 18 | 1 | / | 0.081 |
| 19 | 1 | / | 0.034 |
| 20 | 1 | / | 0.021 |
| 21 | 1 | / | 0.014 |
Table 2 data declaration, alkyl ether carboxy acid salt's dirt dispersion agent of the present invention have excellent scale-inhibiting properties, and during with the composite use of other dirt dispersion agents, scale inhibition effect is better.When alkyl ether carboxy acid salt of the present invention and other inhibiter were composite, the erosion rate of carbon steel had far reached the requirement of circulating water system design specifications (corrosion of carbon steel speed should less than 0.075mm/a).
Claims (10)
1. efficient alkyl ether carboxy acid salt's type dirt dispersion agent, it is characterized in that: the molecular formula of described dispersion agent is RO (CH
2CH
2O)
n(CH
2)
mCOOM, wherein: R is C
4-18Branched-chain or straight-chain alkyl, nonyl phenolic group or alkylolamide base; N=2 ~ 20; M=1 ~ 3; M=Na
+, K
+, NH
4 +Or ethanolamine salt.
2. dirt dispersion agent as claimed in claim 1, it is characterized in that: described alkyl ether carboxy acid salt's type dirt dispersion agent comprises alcohol ether carboxylate, alkyl phenol ether carboxylate salt and Amide Ether Carboxylates.
3. dirt dispersion agent as claimed in claim 1 or 2, it is characterized in that: described dispersion agent is one or more mixtures that mix with arbitrary proportion among the alkyl ether carboxy acid salt.
4. dirt dispersion agent as claimed in claim 1 or 2, dispersion agent uses separately when it is characterized in that processing process water.
5. dirt dispersion agent as claimed in claim 1 or 2, dispersion agent and other dirt dispersion agent, the composite use of inhibiter when it is characterized in that processing process water.
6. dirt dispersion agent as claimed in claim 1 or 2 is characterized in that dispersion agent adds concentration and counts 1 ~ 1000mg/L by system's water yield in recirculated water.
7. dirt dispersion agent as claimed in claim 1 or 2 is characterized in that dispersion agent adds concentration and counts 5 ~ 200mg/L by system's water yield in recirculated water.
8. dirt dispersion agent as claimed in claim 5, it is characterized in that: described other dirt dispersion agent is one or more among starch, tannin, xylogen, Mierocrystalline cellulose, polyacrylic acid, polymethyl acrylic acid, polymaleic anhydride, poly aspartic acid, poly-epoxy succinic acid, acrylic copolymer, toxilic acid analog copolymer, maleic anhydride analog copolymer, sulphonic acids, sulfonic acid esters, sulfuric acid ester multipolymer, poly-phosphate, organic phosphoric acid, organic phosphine carboxylic acid and the phosphinocarboxylic acid.
9. dirt dispersion agent as claimed in claim 5, it is characterized in that: described inhibiter is one or more in chromic salt, poly-phosphate, nitrite, silicate, molybdate, tungstate, zinc salt, organic multicomponent phosphoric acid, aromatic series azole, ferrous sulfate, organic amine, aluminium system, tannin and the sulfonated lignin.
10. dirt dispersion agent as claimed in claim 1 or 2 is characterized in that: described dispersion agent is used for the industrial cycle water treatment or oil field reinjection water is processed.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104326578A (en) * | 2014-10-14 | 2015-02-04 | 董升 | Chemical agent capable of completely recycling power plant wastewater into circulating cooling water and preparation method of chemical agent |
| CN104787904A (en) * | 2015-03-25 | 2015-07-22 | 石太原 | Softened water carbon steel-dedicated corrosion inhibitor and using method thereof |
| CN106315875A (en) * | 2016-10-09 | 2017-01-11 | 广西大学 | Mixed type water treatment corrosion inhibitor |
| CN106673216A (en) * | 2017-01-05 | 2017-05-17 | 陕西省石油化工研究设计院 | High-efficiency composite anti-silicate-scale dispersing agent |
| CN108217989A (en) * | 2018-02-11 | 2018-06-29 | 李剑峰 | A kind of modified cashew nut sulfocarbolate antisludging agent and preparation method thereof |
| CN110201550A (en) * | 2019-06-24 | 2019-09-06 | 营口科林膜技术工程服务有限公司 | A kind of corrosion inhibiting and descaling agent for reverse osmosis membrane |
| CN110898996A (en) * | 2018-09-17 | 2020-03-24 | 中蓝连海设计研究院有限公司 | Fluorite ore collecting agent and preparation method and application thereof |
| CN111285630A (en) * | 2020-01-20 | 2020-06-16 | 中建商品混凝土有限公司 | Light high-strength sludge ceramsite and preparation method thereof |
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| CN104326578A (en) * | 2014-10-14 | 2015-02-04 | 董升 | Chemical agent capable of completely recycling power plant wastewater into circulating cooling water and preparation method of chemical agent |
| CN104787904A (en) * | 2015-03-25 | 2015-07-22 | 石太原 | Softened water carbon steel-dedicated corrosion inhibitor and using method thereof |
| CN104787904B (en) * | 2015-03-25 | 2017-04-05 | 石太原 | A kind of agent of softened water carbon steel special corrosion and its using method |
| CN106315875A (en) * | 2016-10-09 | 2017-01-11 | 广西大学 | Mixed type water treatment corrosion inhibitor |
| CN106673216A (en) * | 2017-01-05 | 2017-05-17 | 陕西省石油化工研究设计院 | High-efficiency composite anti-silicate-scale dispersing agent |
| CN106673216B (en) * | 2017-01-05 | 2019-08-16 | 陕西省石油化工研究设计院 | A kind of efficient compound silicate scale dirt dispersion agent |
| CN108217989A (en) * | 2018-02-11 | 2018-06-29 | 李剑峰 | A kind of modified cashew nut sulfocarbolate antisludging agent and preparation method thereof |
| CN110898996A (en) * | 2018-09-17 | 2020-03-24 | 中蓝连海设计研究院有限公司 | Fluorite ore collecting agent and preparation method and application thereof |
| CN110201550A (en) * | 2019-06-24 | 2019-09-06 | 营口科林膜技术工程服务有限公司 | A kind of corrosion inhibiting and descaling agent for reverse osmosis membrane |
| CN110201550B (en) * | 2019-06-24 | 2021-10-22 | 营口科林膜技术工程服务有限公司 | Corrosion and scale inhibitor for reverse osmosis membrane |
| CN111285630A (en) * | 2020-01-20 | 2020-06-16 | 中建商品混凝土有限公司 | Light high-strength sludge ceramsite and preparation method thereof |
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Application publication date: 20130424 |