CN101117257A - Dirty-proof inhibition composition for reclaimed water circulation sewage and preparation method and application - Google Patents
Dirty-proof inhibition composition for reclaimed water circulation sewage and preparation method and application Download PDFInfo
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- CN101117257A CN101117257A CNA2007101187034A CN200710118703A CN101117257A CN 101117257 A CN101117257 A CN 101117257A CN A2007101187034 A CNA2007101187034 A CN A2007101187034A CN 200710118703 A CN200710118703 A CN 200710118703A CN 101117257 A CN101117257 A CN 101117257A
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Abstract
The invention relates to a corrosion and deposit inhibiting combination for intermediate water sewage system, a fabrication and application method to be concerned, the corrosion and deposit inhibiting combination comprises an organic phosphonate, carboxylic acid multipolymer, zince sulfate and water; the corrosion and deposite inhibiting combination of the invention is fabricated by carboxylic acid multipolymer and other compounds, which can effectively prevent the formation of calcium carbonate in cool circulating water, and also has a favorable performance on preventing the formation of calcium phosphate scale, as the result shows, the corrosion and deposit inhibiting combination has an outstanding corrosion inhibiting effect, the corrosion velocity of carbon steel is only 0.05mm/a which is far smaller than 0.125mm/a equivalent to the national standard, the invention is applicable to a wide arrange of water quality fluctuation, and can provide with an outstanding corrosion and deposit inhibiting performance, the medicament consumption is small, only 40 to 60mg/l of the corrosion and deposit inhibiting combination in the invention can be used for capability of meeting the requirement on corrosion and deposit inhibiting, an industrial water consumption and an economic expense are tremendously saved, the economic benefit and the social benefit are favorable.
Description
Technical field
The present invention relates to the Treatment of Industrial Water technical field, a kind of specifically scale inhibitor technology that is used for the recirculating cooling water system in fields such as electric power, heating power, prevent pipeline, equipment scaling, corrosion, especially for the scale inhibitor composition and method of making the same and the application of the turbid loop systems of middle water.Scale inhibitor composition of the present invention is energy-saving, is fit to the wide recirculating cooling water system of variation water quality scope.
Background technology
The scarcity of water resources and pollute constitutes a threat to social stability, Economic development, one of outstanding problem that becomes that world's overwhelming majority of countries stability and development faces, and water saving, the utilization ratio that improves water resources has been the task of top priority.Water saving at first will be caught relatively and to concentrate the process water that uses, and in process water, the ratio maximum of water coolant accounts for 60-70%, and therefore, saving water coolant just becomes the industry urgent task of economizing on water, cooling moisture once-through cooling water and recirculated cooling water.Recirculated cooling water is being used for being used further to cooling after cooled water is lowered the temperature by cooling tower.After the cooling water circulation use, saved water consumption greatly, but because water coolant constantly evaporates, salt is concentrated in the water, adds that water coolant fully contacts with atmosphere, dissolved oxygen and bacteria content increase greatly, cause recirculated cooling water serious fouling, corrosion and bacterium algae to occur and grow or the like disadvantageous effect, directly influence the normal operation of equipment and the work-ing life of equipment, near and, directly restrict unit safety, economical operation, will bring heavy losses to enterprise when serious.For this reason, need in water coolant, add water treatment agent,, prevent that recirculated water fouling, corrosion and bacterium algae from growing etc. as Scale inhibitors, inhibiter, Biocidal algae-killing agent etc.In numerous methods; adopting the Water Treatment technology is the effective means that current industry water saving of generally acknowledging is both at home and abroad the most generally used; simultaneously, take suitable water technology to carry out anti-corrosion, scale-inhibiting to heat power equipment, protection can prolong the work-ing life of system device effectively.
Water is limited and precious resource, and it is current important topic that water use efficiency is provided, and water has been opened up wide use prospect as the moisturizing of recirculated water as reusing sewage, sewage recycling in using, and has broken a new road for increasing income and decreasing expenditure." middle water " is meant that mainly urban industry sewage or sanitary sewage reach certain water quality standard after treatment, can reusable within the specific limits water, and its water quality is between Shang Shui and following water.The amount of makeup water of cooling water system accounts for more than 50% in the process water, and cooling water system is the main users of reuse water normally.In the production technique link such as steel mill, mainly contain processes such as sintering, coking, ironmaking, steel-making, steel rolling, recirculated cooling water to stably manufactured operation, enhance productivity and product production, quality, the effect that reduces production costs apparent more important.Recirculated cooling water can bring problems such as fouling and corrosion in operational process, the problem that causes aspect corrosion mainly is the work-ing life of reducing heat exchanger, can influence the device ordinary production because of heat exchanger leaks the parking that causes the accident when serious; Fouling and mud problem mainly are to influence the heat exchanger heat transfer and increase systemic resistance, make the decrease in efficiency of heat exchanger, water pump and cooling tower.In STEELMAKING PRODUCTION, the turbid ring circulating water system of continuous casting is mainly supplied with continuous casting secondary spraying water coolant water and device spray water coolant, slag particle water and towards iron sheet water.The turbid ring secondary spraying of continuous casting water coolant also is one of main waste water source of steelworks, and this water contains a large amount of iron scales, mechanical wet goods impurity, the suspension content height, and alter a great deal at the different times of each production.Wherein the oil pollution of steel plant continuous casting machine circulating water system is puzzlement steel-making enterprise water system problem for many years, oil pollution comes from the water clock of the various finishes of continuous casting installation for casting, grease is penetrated in the recirculated water, dust in the bonding water and calcium dirt, form the greasy filth particle suspension in recirculated water, or change with temperature and concentration, decompose or form grease and be attached to equipment; Because recirculated water oil-containing oxygen enrichmentization, under competent illumination or temperature, will grow a large amount of bacterium algaes in the system, and after adding sterilant, killed bacterium algae can form biological clay again and adhere to or deposit, thereby influence the heat exchange efficiency of circulating water system, foundry loam and foreign material can stop up the water coolant nozzle, and bring system's fouling and corrosive problem.Therefore, must carry out scale inhibition, inhibition to it and handle, and the most effective and minimum scheme of cost is chemical treatment---add water quality stabilizer.Because the mining area water consumption increased severely in recent years, the Treatment for Reuse water source supplies water in short supply gradually, and therefore, the utilization ratio again that needs to improve recirculated water is come the conserve water resource." water is the blood of Iron and Steel Production " become common recognition in addition, and the national requirements saving utilizes the water resources protection water surrounding, reduces sewage, waste water effluxes or " zero release ", to realize the Sustainable development of cleaner production process and Iron And Steel Industry.
Reusing sewage after the processing is made the make up water of water coolant, has some difficult point technically.At first, contain more organism in the sewage, therefore, it is serious that the growing of bacterium algae made make up water than former water; Secondly, often contain the chlorion of higher concentration in the sewage, therefore, chlorion can not be ignored equipment corrosion, and reused sewage is also high a lot of than former water to corrosion of Carbon Steel speed; Once more, variation water quality is bigger, and is relatively stricter to the performance requriements of water conditioner.Reusing sewage is done the moisturizing of water coolant, also will consider the otherness of the water-quality guideline of different sewage processing sewage effluent, accordingly prescription is adjusted.
Summary of the invention
The present invention is directed to the defective or the deficiency that exist in the prior art, a kind of scale inhibitor composition that is used for the turbid loop systems of water is provided, said composition is a kind of water conditioner that is fit to high chlorine root, high rigidity, circulating water system that the variation water quality scope is wide, has the characteristics of efficient, low phosphine environmental protection.
The present invention also provides a kind of above-mentioned scale inhibitor preparation of compositions method that is used for the turbid loop systems of water.
The present invention also provides a kind of above-mentioned application that is used for the scale inhibitor composition of the turbid loop systems of water.
Technical conceive of the present invention is, the characteristic that the wide and high chlorine root of water quality of variation water quality scope, high rigidity are arranged at the glassware for drinking water in the turbid loop systems of middle water, by research, test or experiment, select four kinds of combinations of substances and form, these four kinds of materials are respectively: organic phosphonate, polyolefin acid multiple copolymer (as vinylformic acid-sulfonate terpolymer or Propylene glycol monoacrylate multipolymer), sulfuric acid zinc salt and water.Wherein water plays solvent.In actual the use,, make this prescription have the scale inhibitor function of low dosage, effective, can extensively be suitable for the Treatment of Industrial Water field, especially in the wide circulating water system of variation water quality scope, use by various medicament intrinsic synergistic effects in the prescription.
Technical scheme of the present invention is as follows:
Be used for the scale inhibitor composition of the turbid loop systems of water, comprise following component: organic phosphonate, poly carboxylic acid multiple copolymer, sulfuric acid zinc salt and water, wherein water is solvent.
The weight part scope of described each component is: organic phosphonate 20-50 part, poly carboxylic acid multiple copolymer 20-40 part, sulfuric acid zinc salt 5-20 part and water 30-60 part.
The weight part of described each component is preferably: organic phosphonate 20-30 part, poly carboxylic acid multiple copolymer 20-35 part, sulfuric acid zinc salt 8-15 part and water 30-50 part.
The weight part scope of described each component is preferably: 35 parts in 25 parts of organic phosphonates, 30 parts of poly carboxylic acid multiple copolymers, 10 parts of sulfuric acid zinc salts and water.
Described organic phosphonate is 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid or Amino Trimethylene Phosphonic Acid, and the poly carboxylic acid multiple copolymer is vinylformic acid-sulfonate terpolymer or Propylene glycol monoacrylate multipolymer, and the sulfuric acid zinc salt is a Zinc Sulphate Heptahydrate.
The above-mentioned scale inhibitor preparation of compositions method that is used for the turbid loop systems of water may further comprise the steps:
Get component organic phosphonate, poly carboxylic acid multiple copolymer, sulfuric acid zinc salt and water in proportion;
In organic phosphonate, poly carboxylic acid multiple copolymer suction reactor, stir mixing;
Adding water stirs and promptly gets the present composition.
The above-mentioned circular water treating system of scale inhibitor composition in iron and steel system or chemical industry that is used for the turbid loop systems of water used, and said composition is by amount of makeup water, and its dosage is 40～60mg/l.
Technique effect of the present invention is as follows:
Because the present invention is used for the energy-saving scale inhibitor composition that water is the turbid circulating water system, is that several materials are mixed into composition, these several materials include organic phosphonates, poly carboxylic acid multiple copolymer and sulfuric acid zinc salt.Polyvalent metal ion has the ability of complexing in the organic phospho acid salt pair water, can stop scaling salt class formation incrustation scale in the water.The positive and negative ion that organic phosphonate becomes at dissociation in water can form polynary integration thing with metal ions such as calcium, magnesium and be scattered in the water with loose form, and the normal crystallization of calcium dirt, magne-scale is damaged.The poly carboxylic acid multiple copolymer has very high tolerance performance to calcium ion, suppresses the formation of calcium carbonate scale well, with organic phosphonate good cooperative ability is arranged, and can prevent effectively that the scaling salt class forms incrustation scale in the sealing.In addition, contain the bigger polar groups of electronegativity such as O, P in the composition, so can carry out physics and chemisorption in the metallic surface, change the double electrical layers of metal/solution interface, improve the activation energy of metal ion process, thereby improved its adsorptive power widely, demonstrated good corrosion inhibition in the metallic surface.The sulfuric acid zinc salt belongs to the cathode type inhibiter, at the negative electrode position, when zine ion during near the metallic surface, can form the zinc hydroxide throw out apace with the OH-that the cathodic area is built up, and is deposited on cathode surface, thereby plays corrosion inhibition.The sulfuric acid zinc salt can be in water medium the metallic surface fast filming, this is that other inorganic inhibitors are incomparable, but film is soft insecure, so can not suppress the corrosion of metal in the aqueous solution fully when zinc salt uses separately.Therefore, normal and composite synergisms such as organic phosphonate, poly carboxylic acid multiple copolymer, and can reduce these organic consumptions.
Because the present invention limits the weight part scope of each component, these qualifications combine the consideration of test or experimental data, practical application effect, economy and environmental benefit, fully satisfy normal temperature environmental protection, applied range and technical requirements efficiently, also provide convenience simultaneously for of the present invention promoting the use of.
Because the present invention is still at the fouling of heat power equipment, the industrial cycle water treatment composition that etching problem develops, good by its anticorrosion-antiscaling property of a large amount of evidences, technical superiority is obvious.Add composition medicament of the present invention in circulating water system after, Corrosion rate in Carbon Steel is much smaller than 0.125mm/a (millimeter/year), and scale inhibition performance reaches the requirement of national Design of Circulation Cooling Water Treatment standard fully greater than 90%.
In recirculated cooling water soft water systems such as petrochemical system, iron and steel system and chemical industry, composition pharmaceutical products dosage of the present invention is 40～60mg/l, and traditional added amount of chemical such as molybdenum system, silicon system are 1000～2000mg/l, and as seen its using dosage is low, has considerable economic.Shown that fully the present invention has low dosage, energy-efficient technique effect.
No matter carry out equipment inspection after using compound prescription of the present invention, be carbon steel material, or the equipment inwall of copper and copper alloy material and end socket all do not have obvious corrosion and take place, no spot corrosion and corrosion, and the equipment inspection state obviously is better than the domestic same device level same period.It will be further appreciated that the prescription of anti-incrustation corrosion inhibitor of the present invention has the advantages that applicability is wide, Financial cost is low and recycling water utilization is energy-conservation, on-the-spot result of use has shown that fully the present invention has characteristics such as reliable in quality, suitability be strong.
Embodiment
Below will the present invention will be further described by example.
The objective of the invention is to be achieved through the following technical solutions:
The scale inhibitor composition that is used for the turbid loop systems of water comprises that following component is: organic phosphonate, vinylformic acid-sodium sulfonate terpolymer or Propylene glycol monoacrylate multipolymer, sulfuric acid zinc salt and water, wherein water is solvent.
The weight part scope of described each component is elected as: organic phosphonate 20-50 part, poly carboxylic acid multiple copolymer 20-40 part, sulfuric acid zinc salt 5-20 part and water 30-60 part.
The parts by weight of component of described each component is: 35 parts in 25 parts of organic phosphonates, 30 parts of poly carboxylic acid multiple copolymers, 10 parts of sulfuric acid zinc salts and water.
Wherein the concrete composition of organic phosphonate can be 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, and molecular formula is C
2H
8O
7P
2Or Amino Trimethylene Phosphonic Acid, molecular formula is C
3H
12NO
9P
3The concrete composition of poly carboxylic acid multiple copolymer can be vinylformic acid-sulfonate terpolymer, and structural formula is (C
3H
4O
2) n (C
7H
18NO
4S) m or Propylene glycol monoacrylate multipolymer (C
6H
10O
3) n, n and m are known integer in this copolymer molecule formula, and these multipolymers have close effect in the present invention.
The production technique that the present invention is used for the scale inhibitor composition (being designated hereinafter simply as TWZL-002) of the turbid loop systems of water is described below:
One, gets the raw materials ready:, take by weighing 35 parts in 25 parts of quantitative organic phosphonates, 30 parts of poly carboxylic acid multiple copolymers, 10 parts of sulfuric acid zinc salts and water successively with volume pump in strict accordance with formulation ratio.
Two, produce: open vacuum pump, in organic phosphonate, poly carboxylic acid multiple copolymer and water suction reactor, open and stir (80 rev/mins), about 20 minutes, mixing; Under condition of stirring, add the sulfuric acid zinc salt and make its whole dissolvings, continued stir about 20 minutes, packing behind the mixing promptly gets thing of the present invention.
Three, the packing inspection is analysed: a kind of scale inhibitor composition branch that is used for the turbid loop systems of water of the said products is installed in 25 kilograms of plastic barrels.
Four, sampling analysis.
Five, adhesive label and conformity certification and handle warehouse-in.
The technical performance index that is used for the scale inhibitor composition (TWZL-002) of the turbid loop systems of water is described below:
Outward appearance: brown liquid;
Solids content (%):＞25
Total phosphorus (%):＞15
PH value (1% aqueous solution): 1.5-2.5;
Density g/cm
3(20 ℃): 1.1-1.2.
The present invention also provides the application of described anti-incrustation corrosion inhibitor in the bigger circulating water system of variation water quality.In recirculating cooling water systems such as petrochemical system, iron and steel system and chemical industry, said composition is by moisturizing, and its suitable dosage is 40～60mg/l, demonstrates fully the characteristic of its low dosage.
To present composition Economic and Efficiency Analysis as can be known, because national development and the factor that is on the rise of environmental pollution through advancing by leaps and bounds, becoming increasingly conspicuous of shortage of water resources contradiction, the service water price is also growing, water has been opened up wide use prospect as the moisturizing of recirculated water as reusing sewage, sewage recycling in using, and has broken a new road for increasing income and decreasing expenditure.Reusing sewage after the processing is made the make up water of water coolant, has some difficult point technically.At first, contain more organism in the sewage, therefore, it is serious that the growing of bacterium bath made make up water than former water; Secondly, often contain the chlorion of higher concentration in the sewage, therefore, chlorion can not be ignored equipment corrosion, and reused sewage is also high a lot of than former water to corrosion of Carbon Steel speed; Once more, variation water quality is bigger, and is relatively stricter to the performance requriements of water conditioner.Anti-incrustation corrosion inhibitor of the present invention is that compound is composite forms for poly-hydroxy acid and acrylic copolymer etc., in recirculated cooling water, can effectively prevent the formation of lime carbonate, to the performance that prevents that being formed with of calcium phosphate scale is good, in the abominable water quality of high rigidity, high basicity, high chlorine root, can the good scale inhibitor characteristic of performance and silt had very strong dissemination, stable performance, temperature influence not.Adding concentration according to different quality is 40-60mg/l, and available Teat pipette adds system or directly adds the cooling tower water supply tank.It is wide that thing of the present invention adapts to the variation water quality scope, excellent anticorrosion-antiscaling property all can be provided, and the consumption of medicament is very little, adopt inhibiter consumption of the present invention only to need 40-60mg/l just can reach the requirement of scale inhibitor, save industrial water consumption and economic cost greatly, had good economic benefit and social benefit.
Embodiment 1:
A kind of scale inhibitor composition (TWZL-002) that is used for the turbid loop systems of water contains following component (kilogram): organic phosphonate 25, vinylformic acid-sodium sulfonate terpolymer or Propylene glycol monoacrylate multipolymer 30, sulfuric acid zinc salt 10, water 35.
The preparation method of said composition is:
1, gets the raw materials ready:, take by weighing organic phosphonate, vinylformic acid-sodium sulfonate terpolymer or Propylene glycol monoacrylate multipolymer, sulfuric acid zinc salt, water successively with volume pump according to above-mentioned formulation ratio.
2, produce: open vacuum pump, organic phosphonate, vinylformic acid-sodium sulfonate terpolymer or Propylene glycol monoacrylate multipolymer and water is in the suction reactor, and when temperature of reaction during at 40～50 ℃, stirring velocity is under 80 rev/mins the condition, to stir 20 minutes; After this, add the sulfuric acid zinc salt and make its whole dissolvings, continued stir about 20 minutes, packing behind the mixing promptly gets thing of the present invention.
Embodiment 2:
Anti-incrustation corrosion inhibitor of the present invention (TWZL-002) is to the inhibition experiment of carbon steel.
2.1 experiment purpose.
Rotary hanging plate corrosion test method is under the given condition in laboratory, goes out the corrosion inhibition that corrosion rate and corrosion inhibition rate are evaluated water conditioner with the loss Mass Calculation of test piece.Adopt rotary hanging plate corrosion measurement method, examine the corrosive property of continuous casting secondary spraying cooling water system, will pass judgment on thing corrosion inhibition of the present invention by the index comprehensives such as erosion rate that appearance color changes, weight-loss method records of testing the back carbon steel.
2.2 experiment condition.
Experiment water quality: experimental water is provided by Shoudu Iron and Steel Co second steelworks; The water stablizer is the scale inhibitor composition that the present invention is used for the turbid loop systems of water, and add-on is 50mg/L (a commodity concentration); Experiment water temperature: 50 ± 1 ℃; Test piece linear velocity: 170r/min; The distance of test piece upper end and test solution face: should be greater than 2cm; Test piece specification and surface-area: 50 * 25 * 2mm; 28cm
2Test period: 216 hours; Hang the carbon steel coupon number: in every glass three.
Test method is undertaken by " mensuration of water conditioner corrosion inhibition------rotary hanging plate method " GB/T18175-2000 standard.
2.3 experimental procedure.
1. use filter paper lacing film surface grease wiped clean, in normal hexane and dehydrated alcohol, clean respectively then, blot, place moisture eliminator more than 4 hours, weigh, be accurate to 0.0001g, be stored in the moisture eliminator with filter paper with absorbent cotton, stand-by.
2. by requirement of experiment, prepare the water conditioner storing solution.Storing solution concentration is generally about 100 times of running concentration.
3. be ready to experimental water by test requirements document.
4. add the water treatment stock solution in test glass, add experimental water to certain volume, mixing is test solution.Make marks at test glass outer wall and the same level of liquid level place, test glass is placed water-bath.
5. when treating that test solution reaches assigned temperature, hang test piece, starter motor makes lacing film rotate by certain rotation speed, and picks up counting.
6. test glass is not added a cover, and makes the test solution spontaneous evaporation, and moisturizing in per 4 hours once makes liquid level remain on the fixed position.
7. in process of the test, according to actual requirement, replaceable test solution.
8. when reach designated value runtime, stop lacing film and rotate, take out test piece and carry out the outward appearance observation.
9. in corrosion test, do blank test with water conditioner.
10. test piece is scrubbed clean with hairbrush, in Acidwash solution, soaked 3-5 minute then, take out, rapidly with after the tap water flushing, use immediately in the sodium hydroxide solution and about 30 seconds, with tap water, distilled water flushing, with the filter paper wiping and blot, in ethanol solution, soaked about 3 minutes, blot with filter paper, place moisture eliminator more than 4 hours, weigh, be accurate to 0.0001g.Do the pickling blank assay of three lacing films simultaneously.
11. the test piece after the pickling is observed,, should be measured the full depth of spot corrosion and the quantity on the unit surface if spot corrosion is arranged.
2.4 the analysis of water sample in the corrosion experiment.
The analysis of table 1 experiment water sample
| Project | pH | Basicity mg/L | Hardness mg/L | Ca 2+ mg/L | Cl - mg/L | Specific conductivity |
| Continuous casting system | 6.98 | 70.00 | 345.0 | 220.0 | 236.0 | 1890 |
2.5 corrosive nature experimental analysis and conclusion.
1) experiment back carbon steel test piece appearance change.
Table 2 difference adds Corrosion rate in Carbon Steel under the dose.
| Product type | Anti-incrustation corrosion inhibitor TWZL-002 | Have now and be used for correlated anti-incrustation corrosion inhibitor | |||||
| Add dose mg/L | 0 | 40 | 50 | 60 | 40 | 50 | 60 |
| Carbon steel mm/a | 1.3000 | 0.0630 | 0.0500 | 0.0489 | 0.0800 | 0.0790 | 0.0730 |
Table 3 adds dose 50mg/l test glass medium carbon steel test piece appearance change.
| The water sample title | Carbon steel test piece outward appearance face |
| Dosing water sample not | The sorrel rust deposite, the surface is sent out dirty, with corrosion product |
| The dosing water sample | Silver gray, cleaning surfaces light, no corrosion phenomenon |
2) conclusion.
Experiment carbon steel lacing film rate analysis sees Table 2.As known from Table 2, the erosion rate of the blank water sample of dosing is not to add 26 times of inhibiter water sample erosion rate of the present invention, by experiment as can be known, increase along with TWZL-002 scale inhibitor agent concentration, the corrosion of Carbon Steel rate reduces gradually, and when added amount of chemical reaches 50mg/l when above, corrosion rate is basicly stable, no longer considerable change illustrates that there be " threshold effect " in its usage quantity.Add that Corrosion rate in Carbon Steel is 0.05mm/a behind the 50mg/l present composition, be far smaller than national requirements (＜0.125mm/a).In the present invention's test; middle water is in the system of circulating water system; chloride ion content is all than higher; concentration is about 250～350mg/l; along with the test cycles of concentration is increased to more than 3.5～4 times; the recirculated water saltiness sharply increases; its severe corrosive ion content obviously strengthens; the aggravation of corrosion of Carbon Steel tendency; but from experimental phenomena as seen, the carbon steel test piece does not have the obvious corrosion feature, and its surface has formed relatively successive protective membrane of one deck; illustrate that the present composition plays a very good protection to carbon steel, its corrosion inhibition is good.
Embodiment 3:
The contrast experiment of the present composition and other inhibiter corrosion inhibitions.
3.1 experiment purpose.
Carry out carbon steel inhibition experiment for different inhibiter, still utilize rotary hanging plate corrosion measurement method, adopt identical soft water system, by relatively passing judgment on the corrosion inhibition of thing of the present invention.
3.2 experiment condition, experimental procedure.
With 2.2 and 2.3.
3.3 experiment conclusion.
Following table is the test-results of the similar inhibiter with other of the present invention at steel surface.
The comparison of corrosion of carbon steel speed under the different inhibiter of table 4.
| Product type | Anti-incrustation corrosion inhibitor TWZL-002 | Have now and be used for correlated anti-incrustation corrosion inhibitor | ||||
| Add dose (in moisturizing) mg/L | 40 | 50 | 60 | 40 | 50 | 60 |
| Carbon steel mm/a | 0.0630 | 0.0500 | 0.0489 | 0.0800 | 0.0790 | 0.0730 |
Through contrast as seen, under identical dosing, inhibiter of the present invention less than other like product inhibiter, and meets national standard to Corrosion rate in Carbon Steel fully.
Point out that at this it is that vinylformic acid-sulfonate terpolymer and Propylene glycol monoacrylate multipolymer have carried out exchanging test that inventor just belongs to the poly carboxylic acid multiple copolymer, the actual techniques effect is identical or approximate.The inventor just belongs to the 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid and the Amino Trimethylene Phosphonic Acid of organic phosphonate and has carried out exchanging test, and the actual techniques effect is identical or approximate.
In a word, inhibiter of the present invention can play significant inhibitory effect to corrosions of metal such as carbon steel tendencies, has good antiseptic property, only be that its metallic corrosion rate is also much smaller than being national standard under the low dosage of 50mg/l at addition, and effect is remarkable.
Embodiment 4:
4.1 experiment purpose.
, and tentatively determine the reagent combination of this experiment and add dose at the scale inhibition effect of Shoudu Iron and Steel Co two steel plant continuous casting machines turbid ring circulation make up water under different reagent combinations and adding consistency by the static-state scale inhibition measuring.
4.2 experiment condition.
Experiment water quality: experimental water is provided by Shoudu Iron and Steel Co second steelworks; Water stablizer add-on is 50mg/L (a commodity concentration); Experiment water temperature: 50 ± 1 ℃; Test piece linear velocity: 170r/min; The distance of test piece upper end and test solution face: should be greater than 2cm; Test piece specification and surface-area: 50 * 25 * 2mm; 28cm
2Test period: 216 hours; Hang the carbon steel coupon number: in every glass three.
Test method is undertaken by " mensuration of water conditioner scale-inhibiting properties---------tosca method " GB/T16632-1996 standard.
4.3 experimental procedure.
1. get the 2000ml scene adopt former water add in the beaker, accurately add the required Scale inhibitors storing solution of experiment, stir;
2. beaker being placed 70 ± 1 ℃ water bath with thermostatic control to carry out spontaneous evaporation concentrates;
3. after test solution is concentrated into 2.0 times, take out beaker, test solution is moved in the Erlenmeyer flask of 500ml, bottleneck adds the plug that has long thin glass tube, continues to insert in 70 ± 1 ℃ the water bath with thermostatic control, places 10 hours;
4. experiment is full after 10 hours, and powered-down according to requirement analysis time, can carry out naturally cooling or put into cold water being quickly cooled to room temperature.After the cooling,, draw supernatant liquid assay determination calcium ion concn if the test solution liquid level just in time on scale marks, be must guard against vibrations; If liquid level is lower than scale marks, then add water to scale, vibration shakes up, and analyzes calcium ion concn again after clarification or the filtration;
5. should not add Scale inhibitors and the identical blank simultaneous test of other step in the experiment;
4.4 the analysis of water sample in the corrosion experiment.
The analysis of table 5 experiment water sample
| Project | pH | Basicity mg/L | Hardness mg/L | Ca 2+ mg/L | Cl - mg/L | Specific conductivity |
| Continuous casting system | 6.98 | 70.00 | 345.0 | 220.0 | 236.0 | 1890 |
4.5 the static-state scale inhibition performance test is analyzed and conclusion.
Test water quality: cycles of concentration is 3 times a former water
Table 6 difference adds static-state scale inhibition test-results under the dose
Conclusion: prove by experiment, TWZL-002 type water stabilizer is the scale inhibitor composition that the present invention is used for the turbid loop systems of water, when adding dose 50ppm, good dispersing and antisludging effect is just arranged, exceed approximately 15% than the existing scale inhibition performance that is used for correlated anti-incrustation corrosion inhibitor, the turbid ring circulating water system of continuous casting water quality satisfies " Code for design of industrial recirculating cooling water treatment GB50050-95 " water conditioning index request.Therefore, we select the dispersing and antisludging medicament of this water stabilizer as the Shoudu Iron and Steel Co second steel plant continuous casting turbid circulating water for use.In addition, through contrast as seen, under identical dosing, inhibiter of the present invention is better than other like product inhibiter to the scale-inhibiting properties of carbon steel, and meets national standard fully.
Claims (7)
1. be used for the scale inhibitor composition of the turbid loop systems of water, comprise following component: organic phosphonate, poly carboxylic acid multiple copolymer, sulfuric acid zinc salt and water, wherein water is solvent.
2. the scale inhibitor composition that is used for the turbid loop systems of water according to claim 1 is characterized in that: the weight part scope of described each component is: organic phosphonate 20-50 part, poly carboxylic acid multiple copolymer 20-40 part, sulfuric acid zinc salt 5-20 part and water 30-60 part.
3. the scale inhibitor composition that is used for the turbid loop systems of water according to claim 1 is characterized in that: the weight part scope of described each component is: organic phosphonate 20-30 part, poly carboxylic acid multiple copolymer 20-35 part, sulfuric acid zinc salt 8-15 part and water 30-50 part.
4. the scale inhibitor composition that is used for the turbid loop systems of water according to claim 1 is characterized in that: the weight part scope of described each component is: 35 parts in 25 parts of organic phosphonates, 30 parts of poly carboxylic acid multiple copolymers, 10 parts of sulfuric acid zinc salts and water.
5. the scale inhibitor composition that is used for the turbid loop systems of water according to claim 1, it is characterized in that: described organic phosphonate is 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid or Amino Trimethylene Phosphonic Acid, the poly carboxylic acid multiple copolymer is vinylformic acid-sulfonate terpolymer or Propylene glycol monoacrylate multipolymer, and the sulfuric acid zinc salt is a Zinc Sulphate Heptahydrate.
6. according to the described scale inhibitor preparation of compositions method that is used for the turbid loop systems of water of one of claim 1-5, may further comprise the steps:
Get component organic phosphonate, poly carboxylic acid multiple copolymer, sulfuric acid zinc salt and water in proportion;
In organic phosphonate and poly carboxylic acid multiple copolymer suction reactor, stir mixing;
Adding water stirs and promptly gets the present composition.
7. use according to the described circular water treating system of scale inhibitor composition in iron and steel system or chemical industry that is used for the turbid loop systems of water of one of claim 1-5, said composition is by amount of makeup water, and its dosage is 40～60mg/l.
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| CN101921022A (en) * | 2010-08-03 | 2010-12-22 | 北京拓凯化工技术有限公司 | Scale and corrosion inhibitor using recycled water as circulating cooling water in fired power plant, method and application thereof |
| CN101985382A (en) * | 2010-10-25 | 2011-03-16 | 国网技术学院 | Advanced treatment method of urban reclaimed water for power plant |
| CN102167450A (en) * | 2011-03-14 | 2011-08-31 | 山东瑞爱特环保科技有限公司 | Special corrosion and scale inhibitor for oilfield reinjection water and preparation method of corrosion and scale inhibitor |
| CN102491544A (en) * | 2011-12-19 | 2012-06-13 | 中国海洋石油总公司 | Process method for treating recycled water recycling high-concentration-ratio circulating water |
| CN109133390A (en) * | 2017-06-19 | 2019-01-04 | 中国石油化工股份有限公司 | A kind of method of processing cycle cooling water |
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| CN101921022A (en) * | 2010-08-03 | 2010-12-22 | 北京拓凯化工技术有限公司 | Scale and corrosion inhibitor using recycled water as circulating cooling water in fired power plant, method and application thereof |
| CN101921022B (en) * | 2010-08-03 | 2012-07-04 | 北京拓凯化工技术有限公司 | Scale and corrosion inhibitor using recycled water as circulating cooling water in fired power plant, method and application thereof |
| CN101985382A (en) * | 2010-10-25 | 2011-03-16 | 国网技术学院 | Advanced treatment method of urban reclaimed water for power plant |
| CN101985382B (en) * | 2010-10-25 | 2012-04-04 | 国网技术学院 | Advanced treatment method of urban reclaimed water for power plant |
| CN102167450A (en) * | 2011-03-14 | 2011-08-31 | 山东瑞爱特环保科技有限公司 | Special corrosion and scale inhibitor for oilfield reinjection water and preparation method of corrosion and scale inhibitor |
| CN102167450B (en) * | 2011-03-14 | 2012-06-27 | 山东瑞爱特环保科技有限公司 | Special corrosion and scale inhibitor for oilfield reinjection water and preparation method of corrosion and scale inhibitor |
| CN102491544A (en) * | 2011-12-19 | 2012-06-13 | 中国海洋石油总公司 | Process method for treating recycled water recycling high-concentration-ratio circulating water |
| CN102491544B (en) * | 2011-12-19 | 2013-04-17 | 中国海洋石油总公司 | Process method for treating recycled water recycling high-concentration-ratio circulating water |
| CN109133390A (en) * | 2017-06-19 | 2019-01-04 | 中国石油化工股份有限公司 | A kind of method of processing cycle cooling water |
| CN110872542A (en) * | 2018-08-30 | 2020-03-10 | 铁岭市龙首精细化工有限公司 | Heat exchanger cleaning agent |
| CN112794465A (en) * | 2021-01-23 | 2021-05-14 | 海南一然环保科技有限公司 | Scale-inhibiting and bacteriostatic corrosion inhibitor and preparation method thereof |
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