CN1234625C - Composite scale-inhibiting corrosion inhibitor suitable for reusing ammonia nitrogen containing effluent as circular cooling water - Google Patents
Composite scale-inhibiting corrosion inhibitor suitable for reusing ammonia nitrogen containing effluent as circular cooling water Download PDFInfo
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- CN1234625C CN1234625C CN 01134704 CN01134704A CN1234625C CN 1234625 C CN1234625 C CN 1234625C CN 01134704 CN01134704 CN 01134704 CN 01134704 A CN01134704 A CN 01134704A CN 1234625 C CN1234625 C CN 1234625C
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Abstract
The present invention relates to a composite scale resistant corrosion inhibiting agent which is suitable for reusing ammonia nitrogen waste water as circulating water. The composite scale resistant corrosion inhibiting agent of the present invention comprises polyphosphate or phosphate, organic phosphonic acid, copolymers containing sulfonic groups, zinc salt and copper material corrosion inhibiting agents existing according to specific circumstances. The composite scale resistant corrosion inhibiting agent of the present invention can be used for treating ammonia nitrogen waste water in a biochemical mode to be reused as industrial circulating cooling water.
Description
Technical field
The present invention relates to a kind of being fit to contains the anti-incrustation corrosion inhibitor that ammonia-nitrogen sewage is back to recirculated cooling water, relates in particular to be used for containing the composite scale-inhibiting corrosion inhibitor of ammonia-nitrogen sewage as the recirculating cooling water system moisturizing through secondary biochemical treatment.
Background technology
Usually the used crude oil of refinery contains nitrogenous compound, in crude oil purified process, can produce the streams that contains ammonia nitrogen, though this streams has reclaimed most of useful ammonia through technology for refining ammonia, but still some ammonia has entered sink drainage inevitably and formed the sewage that contains ammonia nitrogen.At present, this part sewage that contains ammonia nitrogen generally is to send sewage work to carry out discharging after the secondary biochemical treatment, also fails to reclaim and be back to recirculated cooling water, and this is current water scarcity, is a kind of great waste.If can further handle and be back to recirculated cooling water to the sewage that contains ammonia nitrogen will be an effective way that solves enterprise's shortage of water resources.To solve problems such as inhibition, scale inhibition and microorganism and foundry loam control in the reuse process.Scale inhibition and inhibition problem when the present invention solves and to contain ammonia-nitrogen sewage and be back to recirculated cooling water.
Chinese patent application CN1258649A discloses a kind of Recompounded multielement antisludging corrosion inhibitor, this anti-incrustation corrosion inhibitor mainly includes machine phosphonic acid, contains sulfonic group multipolymer and zinc salt, can be used for the processing to the petrochemical wastewater of process secondary biochemical treatment, its shortcoming is that this Recompounded multielement antisludging corrosion inhibitor can only be used for the circulating water treatment of the petrochemical wastewater of ammonia-nitrogen content few (0.14-1.88mg/L) as moisturizing.
Chinese patent application CN1067230A discloses nitrogen fertilizer plant's ammonia-containing water and has contained ammonia circulating water treatment technology, and the anti-incrustation corrosion inhibitor of this technology is for the series of phosphorated humic acids not HAS water quality stabilizer, and is all different with source of sewage of the present invention and anti-incrustation corrosion inhibitor.
Summary of the invention
The object of the present invention is to provide a kind of composite scale-inhibiting corrosion inhibitor that ammonia-nitrogen sewage is back to recirculated cooling water that is fit to contain.
For achieving the above object, the invention provides a kind of composite scale-inhibiting corrosion inhibitor, comprising poly-phosphate or phosphoric acid salt, organic phospho acid, contain sulfonic group multipolymer and zinc salt.
Poly-phosphate of the present invention is Sodium hexametaphosphate 99 or tripoly phosphate sodium STPP, and described phosphoric acid salt is sodium or the sylvite that contains phosphate radical, hydrogen phosphate and dihydrogen phosphate.
Organic phospho acid of the present invention is at least a 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP), Amino Trimethylene Phosphonic Acid (ATMP), the 2-phosphonate group-1 of being selected from, 2,4-butane tricarboxylate (PBTCA), hydroxyethylidene diphosphonic acid guanidine-acetic acid (HPAA), ethylene diamine tetra methylene phosphonic acid (EDTMP), diethylene triamine pentamethylene phosphonic, to two phosphono and sulfonics, glycine two methene phosphonic acids, L-glutamic acid two methene phosphonic acids, thionamic acid two methene phosphonic acids, taurine two methene phosphonic acids.Wherein amino acid two methene phosphonic acids add phosphorus trichloride (PCl afterwards again by amino acid (as glycine, L-glutamic acid) and formaldehyde (HCHO) solution is simultaneously soluble in water
3) reaction obtain; Perhaps, add the concentrated hydrochloric acid reaction again and obtain by amino acid (as glycine, L-glutamic acid), phosphorous acid and formaldehyde solution is simultaneously soluble in water.
The sulfonic group multipolymer that contains of the present invention is selected from toxilic acid (acid anhydride)/styrene sulfonic acid multipolymer, vinylformic acid (AA)/styrene sulfonic acid multipolymer, acrylate/styrene sulfonic acid multipolymer, toxilic acid (acid anhydride)/allyl sulphonic acid multipolymer, vinylformic acid/allyl sulphonic acid multipolymer, vinylformic acid/vinyl sulfonic acid multipolymer, vinylformic acid/2-methyl-2 '-acrylamido propane sulfonic acid (AMPS) multipolymer, acrylic acid/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer, acrylic acid/esters/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer, vinylformic acid/toxilic acid/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer, vinylformic acid/2-acrylamido-2-methylpropanephosphonic acid/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer.Wherein said acrylate is preferably from vinylformic acid C
1-8Ester is more preferably from methyl acrylate, ethyl propenoate, Propylene glycol monoacrylate (HPA).
Zinc salt of the present invention is selected from zinc sulfate, zinc chloride and zinc carbonate, preferably sulfuric acid zinc and zinc chloride.
During as use copper material equipment in the circulation cooling water system, composite scale-inhibiting corrosion inhibitor of the present invention also contains heterogeneous ring compound as copper material corrosion inhibitor, and preferred mercaptobenzothiazole and benzotriazole (BTA) are as copper material corrosion inhibitor.
Poly-phosphate of the present invention or phosphoric acid salt are 2-15mg/L with respect to the effective concentration of pending aqueous solution total amount.
Organic phospho acid of the present invention is 2-15mg/L with respect to the effective concentration of pending aqueous solution total amount.
The sulfonic group multipolymer that contains of the present invention is 4-15mg/L with respect to the effective concentration of pending aqueous solution total amount.
Zinc salt of the present invention is 1.5-5mg/L in zine ion with respect to the effective concentration of pending aqueous solution total amount.
Copper material corrosion inhibitor of the present invention is 0.5-1.5mg/L with respect to the effective concentration of pending aqueous solution total amount.
Available ordinary method prepares composite scale-inhibiting corrosion inhibitor of the present invention, the reinforced order of each component is unimportant, for example can be with poly-phosphate or phosphoric acid salt, organic phospho acid, contain sulfonic group multipolymer, zinc salt and copper material corrosion inhibitor (if any) and water by predetermined mixed, can make required composite scale-inhibiting corrosion inhibitor.In the preparation process of composite scale-inhibiting corrosion inhibitor, also can add a spot of acid (as dilute sulphuric acid, dense or dilute hydrochloric acid etc.), promoting the dissolving of zinc salt, poly-phosphate etc., with the uniform solution of the composite scale-inhibiting corrosion inhibitor that needing to obtain concentration as early as possible.
When containing ammonia-nitrogen sewage, by getting final product with composite scale-inhibiting corrosion inhibitor processing of the present invention as the make up water of recirculating cooling water system.
The ammonia-nitrogen sewage that contains of the present invention is the ammonia-nitrogen sewage that contains from refinery, and its ammonia nitrogen concentration is 2-20mg/L.
Usually poly-phosphate or phosphoric acid salt zincification brine treatment scheme need adopt the method that pH value is turned down when handling the sewage of high basicity, and can under natural operational conditions (high basicity), processing contain ammonia-nitrogen sewage with composite scale-inhibiting corrosion inhibitor of the present invention, pH value can increase the use range of this composite scale-inhibiting corrosion inhibitor up to 9.2 when concentrating.
Embodiment
The following examples will help to illustrate the present invention, but not limit to its scope.
" tosca method " and " rotary hanging plate weight-loss method " carries out static-state scale inhibition test and rotary hanging plate corrosion test in " water coolant analysis and the test method " that the following examples are all write according to production department of China PetroChemical Corporation and development division (1993, general petrochemical works, Anqing information center publishes).The former water of test concentrates 3 times in " tosca method "; Test temperature is 40 ℃ in " rotary hanging plate weight-loss method ", and the test piece rotating speed is 120 rev/mins (rpm), and test period is 72h, and the lacing film material is a carbon steel, and test water is to concentrate 2 times the former water of test.The former water of the test of following embodiment for from refinery contain ammonia-nitrogen sewage according to a conventional method through secondary biochemical treatment (as activated sludge process), and remove suspended substance (as with the filtration of high-efficiency fiber beam filter device) through flocculating settling [as can at room temperature polymerize aluminum chloride (concentration is 40mg/L) and cationic polyacrylamide (concentration is 2mg/L) successively being added wherein as flocculation agent, sedimentation is 0.5 hour again], secondary filter after sewage.The test raw water quality is: ammonia nitrogen 2-20mg/L, Ca
2+(with CaCO
3Meter, down together) 120-200mg/L, total alkalinity is (with CaCO
3Meter, down together) 200-380mg/L, Cl
-83.5-142.3mg/L, SO
4 2-146-639mg/L, pH 7.4-8.4, specific conductivity 1120-1639 μ s/cm, total molten solid 576-756mg/L, COD
Cr23-137mg/L.The COD of water quality
CrMeasuring method is classical chromium method, " water coolant analysis and the test method " that remaining is write with reference to production department of China PetroChemical Corporation and development division.
Embodiment 1
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 12g Sodium hexametaphosphate 99 is dissolved in the 26.5g water, stirring and dissolving, adding the 20g solid content then respectively and be 30% AA/AMPS/HPA contains the sulfonic group terpolymer (HPA is a hydroxypropyl acrylate, weight ratio is AA/AMPS/HPA=60/20/20) and the 4g active ingredient be 50% PBTCA, 10 of dilute sulphuric acids that add 17.5g Zinc vitriol and 1: 3 (volume ratio of the vitriol oil and water) at last fully dissolve it, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in test water by the drug concentration of 80mg/L with the liquid medicine for preparing, Sodium hexametaphosphate 99, AA/AMPS/HPA contain sulfonic group terpolymer, PBTCA, Zn in the water
2+Effective concentration be respectively 12mg/L, 6mg/L, 2mg/L, 4mg/L.
The test raw water quality is: ammonia nitrogen 18mg/L, Ca
2+155mg/L, total alkalinity 283mg/L, Cl
-105.6mg/L, SO
4 2-324mg/L, pH 8.4, COD
Cr43mg/L.
Embodiment 2
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 14g Sodium hexametaphosphate 99 is dissolved in the 35.75g water, stirring and dissolving, adding the 20g solid content then respectively and be 30% AA/AMPS, to contain sulfonic group copolymer (weight ratio is AA/AMPS=60/40) and 4g active ingredient be 50% HEDP, add the 6.25g Zinc Chloride Anhydrous at last, fully dissolving, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in test water by the drug concentration of 80mg/L with the liquid medicine for preparing, Sodium hexametaphosphate 99, AA/AMPS contain sulfonic group copolymer, HEDP, Zn in the water
2+Effective concentration be respectively 14mg/L, 6mg/L, 2mg/L, 3mg/L.
The test raw water quality is: ammonia nitrogen 10mg/L, Ca
2+194mg/L, total alkalinity 335mg/L, Cl
-125.3mg/L, SO
4 2-639mg/L, pH 8.1, COD
Cr33mg/L.
Embodiment 3
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 10.4g sodium phosphate is dissolved in the 13.1g water, stirring and dissolving, add the 15g solid content then respectively and be that 30% AA/AMPS/HPA contains sulfonic group terpolymer (weight ratio is AA/AMPS/HPA=70/15/15), active ingredient is 50% PBTCA 8g and HEDP16g, 10 of dilute sulphuric acids that add 17.5g Zinc vitriol and 1: 3 (volume ratio of the vitriol oil and water) at last, it is fully dissolved, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in test water by the drug concentration of 80mg/L with the liquid medicine for preparing, sodium phosphate is (with PO in the water
4 3-Meter), containing AMPS contains sulfonic group terpolymer, PBTCA, HEDP, Zn
2+Effective concentration be respectively 6mg/L, 4.5mg/L, 4mg/L, 8mg/L, 4mg/L.
The test raw water quality is: ammonia nitrogen 2mg/L, Ca
2+123mg/L, total alkalinity 379mg/L, Cl
-83.5mg/L, SO
4 2-150mg/L, pH 7.4, COD
Cr105mg/L.
Embodiment 4
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 4g Sodium hexametaphosphate 99 is dissolved in the 17.7g water, stirring and dissolving, add the 20g solid content then respectively and be that 30% AA/AMPS contains sulfonic group copolymer (weight ratio is AA/AMPS=55/45), active ingredient is 50% PBTCA 24g and glycine two methene phosphonic acids 6g, add 5 of 8.3g Zinc Chloride Anhydrous and concentrated hydrochloric acids at last, fully dissolving, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in test water by the drug concentration of 80mg/L with the liquid medicine for preparing, Sodium hexametaphosphate 99, AA/AMPS contain sulfonic group copolymer, PBTCA, glycine two methene phosphonic acids, Zn in the water
2+Effective concentration be respectively 4mg/L, 6mg/L, 12mg/L, 3mg/L, 4mg/L.
The test raw water quality is seen embodiment 2.
Embodiment 5
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 3g Sodium hexametaphosphate 99 is dissolved in the 18.85g water, stirring and dissolving, add the 40g solid content then respectively and be that 30% AA/AMPS/HPA contains sulfonic group terpolymer (weight ratio is AA/AMPS/HPA=70/15/15), active ingredient is 50% PBTCA 8g and thionamic acid two methene phosphonic acids 6g, add the 4.15g Zinc Chloride Anhydrous at last, fully dissolving, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in test water by the drug concentration of 80mg/L with the liquid medicine for preparing, Sodium hexametaphosphate 99, AA/AMPS/HPA contain sulfonic group terpolymer, PBTCA, thionamic acid two methene phosphonic acids, Zn in the water
2+Effective concentration be respectively 3mg/L, 12mg/L, 4mg/L, 3mg/L, 2mg/L.
The test raw water quality is seen embodiment 3.
Embodiment 6
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 4g tripoly phosphate sodium STPP is dissolved in the 14.5g water, stirring and dissolving, add the 30g solid content then respectively and be that 30% AA/AMPS/HPA contains that sulfonic group terpolymer (weight ratio is AA/AMPS/HPA=70/15/15), active ingredient are 50% PBTCA 8g and to two phosphono and sulfonic 6g, add the 17.5g Zinc vitriol at last, fully dissolving, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in test water by the drug concentration of 80mg/L with the liquid medicine for preparing, in the water tripoly phosphate sodium STPP, AA/AMPS/HPA contain sulfonic group terpolymer, PBTCA, to two phosphono and sulfonics, Zn
2+Effective concentration be respectively 4mg/L, 9mg/L, 4mg/L, 3mg/L, 4mg/L.
The test raw water quality is seen embodiment 2.
Embodiment 7
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 6g Sodium hexametaphosphate 99 is dissolved in the 21.5g water, stirring and dissolving, adding the 20g solid content then respectively and be 30% AA/AMPS/HPA contains sulfonic group terpolymer (weight ratio is AA/AMPS/HPA=60/20/20), copper material corrosion inhibitor BTA1g, active ingredient and is 50% PBTCA8g, HEDP 6g, 10 of dilute sulphuric acids that add 17.5g Zinc vitriol and 1: 3 (volume ratio of the vitriol oil and water) at last, fully dissolving, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in test water by the drug concentration of 80mg/L, Sodium hexametaphosphate 99 in the water, contain AMPS and contain sulfonic group terpolymer, BTA, PBTCA, HEDP, Zn with the liquid medicine for preparing
2+Effective concentration be respectively 6mg/L, 6mg/L, 1mg/L, 4mg/L, 3mg/L, 4mg/L.
The test raw water quality is seen embodiment 2.
Embodiment 8
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 3g Sodium phosphate dibasic is dissolved in the 17.5g water, stirring and dissolving, add the 20g solid content then respectively and be that 30% AA/AMPS/HPA contains sulfonic group terpolymer (weight ratio is AA/AMPS/HPA=50/25/25), active ingredient is 50% PBTCA16g and HEDP6g, 10 of dilute sulphuric acids that add 17.5g Zinc vitriol and 1: 3 (volume ratio of the vitriol oil and water) at last, fully dissolving, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in test water by the drug concentration of 80mg/L with the liquid medicine for preparing, Sodium phosphate dibasic is (with PO in the water
4 3-Meter), containing AMPS contains sulfonic group terpolymer, PBTCA, HEDP, Zn
2+Effective concentration be respectively 2mg/L, 6mg/L, 8mg/L, 3mg/L, 4mg/L.
The test raw water quality is seen embodiment 3.
Embodiment 9
Process for preparation: preparation 80g liquid medicine
Taking by weighing the 3.8g SODIUM PHOSPHATE, MONOBASIC is dissolved in the 14.7g water, stirring and dissolving, add the 30g solid content then respectively and be that 30% AA/AMPS/HPA contains sulfonic group terpolymer (weight ratio is AA/AMPS/HPA=70/15/15), active ingredient is 50% PBTCA8g and HEDP6g, add the 17.5g Zinc vitriol at last, fully dissolving, shake up, promptly obtain the 80g liquid medicine of required preparation.
When adding in containing test water by the drug concentration of 80mg/L with the liquid medicine for preparing, SODIUM PHOSPHATE, MONOBASIC is (with PO in the water
4 3-Meter), containing AMPS contains sulfonic group terpolymer, PBTCA, HEDP, Zn
2+Effective concentration be respectively 3mg/L, 9mg/L, 4mg/L, 3mg/L, 4mg/L.
The test raw water quality is seen embodiment 1.
Carry out static-state scale inhibition test and rotary hanging plate corrosion test by the above-mentioned concentration that adds, resistance calcium carbonate scale rate and corrosion speed see Table 1.
The scale inhibitor effect of table 1 corrosion inhibiting and descaling agent
| Embodiment | Resistance calcium carbonate scale rate (%) | Corrosion of carbon steel speed (mm/a) | Copper material corrosion speed (mm/a) |
| Embodiment 1 | 97.5 | 0.033 | |
| Embodiment 2 | 97.1 | 0.030 | |
| Embodiment 3 | 98.4 | 0.032 | |
| Embodiment 4 | 99.4 | 0.033 | |
| Embodiment 5 | 99.9 | 0.047 | |
| Embodiment 6 | 99.4 | 0.034 | |
| Embodiment 7 | 99.7 | 0.033 | 0.0023 |
| Embodiment 8 | 99.6 | 0.023 | |
| Embodiment 9 | 98.9 | 0.019 |
Comparative Examples 1-4
By the method for Chinese patent application CN1258649A, be formulated as follows the scale inhibitor solution of the concentration shown in the table, and according to the form below adds concentration and carries out static-state scale inhibition test and rotary hanging plate corrosion test, hinder calcium carbonate scale rate and erosion rate and see Table 2.
Comparative Examples 5
Directly will contain the concentrated laggard row of ammonia-nitrogen sewage and carry out static-state scale inhibition test and rotary hanging plate corrosion test, erosion rate sees Table 2.
Table 2 nitric wastewater concentrates 2,3 times scale inhibition and inhibition experimental result
| Comparative Examples | The composition of corrosion inhibiting and descaling agent | Proportioning (in effective concentration) | Erosion rate (mm/a) | Resistance calcium carbonate scale rate (%) | ||
| Concentrate 2 times | Concentrate 3 times | Concentrate 2 times | Concentrate 3 times | |||
| 1 | HEDP+PBTCA+Zn 2++ contain the sulfonic group multipolymer | 4∶2∶3∶6 | 2.270 | 1.852 | 99.5 | 99.1 |
| 2 | HEDP+ diethylene triamine pentamethylene phosphonic+Zn 2++ contain the sulfonic group multipolymer | 4∶2∶4∶8 | 2.340 | 2.037 | 99.9 | 99.6 |
| 3 | HEDP+ATMP+Zn 2++ contain the sulfonic group multipolymer | 6∶4∶2∶8 | 1.721 | 1.915 | 99.7 | 99.4 |
| 4 | HEDP+PBTCA+Zn 2++ contain the sulfonic group multipolymer | 3∶4∶2∶10 | 1.620 | 1.793 | 99.9 | 99.7 |
| 5 | Blank | 2.256 | 1.617 | |||
Annotate: experiment condition: 40 ℃, 120rpm, 72h, ammonia nitrogen is 10mg/L in the water
Containing the sulfonic group multipolymer is AA/AMPS/HPA multipolymer (each monomeric weight ratio is that 70/10/20,30 ℃ of intrinsic viscosity is 0.090dl/g)
By the data of the foregoing description and Comparative Examples as can be seen: it is strong to contain ammonia-nitrogen sewage corrodibility, when the anti-incrustation corrosion inhibitor of selecting Chinese patent application CN1258649A for use carries out the corrosion-mitigation scale-inhibition test, erosion rate is excessive, and the anti-incrustation corrosion inhibitor that CN1258649A is described is not suitable for containing ammonia-nitrogen sewage and is back to recirculated cooling water and handles; And carry out corrosion-mitigation scale-inhibition when test with composite scale-inhibiting corrosion inhibitor of the present invention, its scale-inhibiting properties and corrosion inhibition are all fine, illustrate that being suitable for containing ammonia-nitrogen sewage with composite scale-inhibiting corrosion inhibitor of the present invention is back to the processing that recirculated cooling water promptly is used as the make up water of recirculating cooling water system.
Claims (11)
1, a kind ofly is suitable for containing the composite scale-inhibiting corrosion inhibitor that ammonia-nitrogen sewage is back to circulating water treatment, comprising poly-phosphate or phosphoric acid salt, organic phospho acid, contain sulfonic group multipolymer and zinc salt.
2, anti-incrustation corrosion inhibitor according to claim 1 is characterized in that described poly-phosphate is Sodium hexametaphosphate 99 or tripoly phosphate sodium STPP, and described phosphoric acid salt is sodium salt or the sylvite that contains phosphate radical, hydrogen phosphate or dihydrogen phosphate.
3, anti-incrustation corrosion inhibitor according to claim 1, it is characterized in that described organic phospho acid is at least a 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid, Amino Trimethylene Phosphonic Acid, the 2-phosphonate group-1 of being selected from, 2,4-butane tricarboxylate, hydroxyethylidene diphosphonic acid guanidine-acetic acid, ethylene diamine tetra methylene phosphonic acid, diethylene triamine pentamethylene phosphonic, to two phosphono and sulfonics, glycine two methene phosphonic acids, L-glutamic acid two methene phosphonic acids, thionamic acid two methene phosphonic acids, taurine two methene phosphonic acids.
4, anti-incrustation corrosion inhibitor according to claim 1 is characterized in that the described sulfonic group multipolymer that contains is selected from toxilic acid/styrene sulfonic acid multipolymer, maleic anhydride/styrene sulfonic acid multipolymer, vinylformic acid/styrene sulfonic acid multipolymer, acrylate/styrene sulfonic acid multipolymer, toxilic acid/allyl sulphonic acid multipolymer, maleic anhydride/allyl sulphonic acid multipolymer, vinylformic acid/allyl sulphonic acid multipolymer, vinylformic acid/vinyl sulfonic acid multipolymer, vinylformic acid/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer, acrylic acid/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer, acrylic acid/esters/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer, vinylformic acid/toxilic acid/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer, vinylformic acid/2-acrylamido-2-methylpropanephosphonic acid/2-methyl-2 '-acrylamido propane sulfonic acid multipolymer.
5, anti-incrustation corrosion inhibitor according to claim 1 is characterized in that described zinc salt is selected from zinc sulfate, zinc chloride and zinc carbonate.
6, anti-incrustation corrosion inhibitor according to claim 1 is characterized in that wherein containing heterogeneous ring compound as copper material corrosion inhibitor.
7, anti-incrustation corrosion inhibitor according to claim 6 is characterized in that described copper material corrosion inhibitor selected from mercapto benzothiazole and benzotriazole.
8, anti-incrustation corrosion inhibitor according to claim 1, it is characterized in that with respect to the effective concentration of pending each component of aqueous solution total amount being: poly-phosphate or phosphoric acid salt are 2-15mg/L, the organic phospho acid total concn is 2-15mg/L, contain sulfonic group copolymer concentration 4-15mg/L, zinc salt is counted 1.5-5mg/L with zine ion.
9,, it is characterized in that the effective concentration with respect to pending aqueous solution total amount copper material corrosion inhibitor is 0.5-1.5mg/L according to claim 6 or 7 described anti-incrustation corrosion inhibitors.
10, the purposes of each described anti-incrustation corrosion inhibitor of claim 1-9 is characterized in that using it for and contains ammonia-nitrogen sewage and be back to recirculated cooling water and handle.
11, the purposes of anti-incrustation corrosion inhibitor according to claim 10 is characterized in that the described ammonia nitrogen concentration that contains ammonia-nitrogen sewage is 2-20mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01134704 CN1234625C (en) | 2001-11-08 | 2001-11-08 | Composite scale-inhibiting corrosion inhibitor suitable for reusing ammonia nitrogen containing effluent as circular cooling water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01134704 CN1234625C (en) | 2001-11-08 | 2001-11-08 | Composite scale-inhibiting corrosion inhibitor suitable for reusing ammonia nitrogen containing effluent as circular cooling water |
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| CN1234625C true CN1234625C (en) | 2006-01-04 |
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| CN105692926A (en) * | 2016-02-22 | 2016-06-22 | 佛山高富中石油燃料沥青有限责任公司 | High-efficiency circulating water corrosion and scale inhibitor and preparation method thereof |
| CN105777805A (en) * | 2016-04-06 | 2016-07-20 | 山东泰和水处理科技股份有限公司 | Synthetic method and application of dimethylphosphinic acid glutamate |
| CN114195276A (en) * | 2021-07-16 | 2022-03-18 | 河北奥博水处理有限公司 | Waste water used as blast furnace slag flushing water treatment agent |
| CN113830906A (en) * | 2021-10-29 | 2021-12-24 | 福州盈科水处理工程有限公司 | Novel corrosion and scale inhibitor and preparation method and application thereof |
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2001
- 2001-11-08 CN CN 01134704 patent/CN1234625C/en not_active Expired - Lifetime
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