Research on the Scale Inhibition Performance of AA/MA/MAC Copolymer

2012 ◽  
Vol 554-556 ◽  
pp. 223-226 ◽  
Author(s):  
Shan Fa Tang ◽  
Wei Zou ◽  
Yu Juan Xiong ◽  
Xue Yang ◽  
Lei Tian
Keyword(s):  
Aqueous Medium ◽  
Ion Concentration ◽  
Formation Water ◽  
Inhibition Rate ◽  
Inhibition Effect ◽  
Composite Scale ◽  
Scale Inhibition ◽  
High Calcium ◽  
Inhibition Performance ◽  
Strontium Ion

The terpolymer was synthesized by maleic anhydride (MA), acrylic acid (AA) and methyl acrylate (MAC) and the structure was also conformed. Its scale inhibition effect was also studied in high barium and strontium ion concentration aqueous medium and simulated formation water (Ca2+, Mg2+, Ba2+, Si2+) condition. The results indicate that when additive amount of AA/MAC/MA is 60 mg/L, the inhibition rate is up to 100% and 80% for BaSO4 scale and SrSO4 scale respectively, but only 50% for calcium scale. And the scale inhibition rate moderately increases with the dosage increasing. The scale inhibition effect of AA/MAC/MA is also very obvious in simulated formation water containing low calcium ions (400 mg/L) and high barium ions (500 mg/L) as well as strontium ions (500 mg/L). It can satisfy the need of restraining composite scale (BaSO4 scale and SrSO4 scale as well as CaSO4 scale) in high calcium and barium strontium ion aqueous medium when compounded with calcium scale inhibitors CY and CX respectively.

Research on the Scale Inhibition Performance of AA/SAS Binary Polymer

2013 ◽  
Vol 448-453 ◽  
pp. 3949-3953
Author(s):  
Shan Fa Tang ◽  
Hui Liao ◽  
Lei Tian ◽  
Xiao Jie Wang ◽  
Xiao Yang Lei ◽  
...  
Keyword(s):  
Inhibition Efficiency ◽  
Formation Water ◽  
Mass Ratio ◽  
High Concentration ◽  
Binary Polymer ◽  
Scale Inhibition ◽  
High Calcium ◽  
Barium Ion ◽  
Strontium Ions ◽  
Inhibition Performance

The binary polymer AA/SAS was synthesized by acrylic acid (AA) and sodium allylsulfonate (SAS), named as AS and its structure was characterized. Its scale inhibition performance was also investigated for single CaCO3, CaSO4 scales, and composite scales in simulated formation water containing Ca2+, Mg2+, Ba2+ and Sr2+. The results indicate that when adding 50mg/L of the inhibitor, it is 85.05% efficient for CaCO3 inhibition and 98.85% for CaSO4, but only 49.05% and 51.58% for BaSO4 and SrSO4 separately. The scale inhibition performance is obvious in the simulated formation water with high concentration of calcium (1300mg/L) and low barium ion (100mg/L ), the inhibition efficiency are both above 85% at a dosage of 80mg/L. And it can fairly satisfy the demand of inhibiting composite scales (CaCO3 scale, CaSO4 scale, BaSO4 scale and SrSO4 scale), when AS and CT was combined at a mass ratio of 2:1 in high calcium , barium and strontium ions contained formation water, being 95.3% efficient at the dosage of 100mg/L.

Synthesis of New Phosphate and the Evaluation as Scale Inhibitor in Oilfield

2019 ◽  
Vol 814 ◽  
pp. 493-498
Author(s):  
Ren Jun Xu ◽  
Hua Lei He ◽  
Jing Wang ◽  
Hai Peng Hui ◽  
Qiao Na Liu
Keyword(s):  
Calcium Carbonate ◽  
Phosphonic Acid ◽  
Synthesis Method ◽  
Normal Growth ◽  
Inhibition Rate ◽  
Scale Inhibitor ◽  
Composite Scale ◽  
Scale Inhibition ◽  
Ph Range ◽  
Inhibition Performance

Compared with inorganic phosphonates, organic phosphonates have better chemical stability in water treatment, and are not easy to hydrolyze in higher temperature and wider pH range. In this paper, a one-step synthesis method of ethylene diamine tetra (methylene phosphonic acid) sodium (EDTMPS) and methylene phosphonic acid (DTPMPA) were studied. A new phosphate scale inhibitor was prepared and its scale inhibition performance was evaluated. The results showed that the scale inhibition rate increased with the increase of the concentration of synthetic products (EDTMPS, DTPMPA). At the same concentration, compared with DTPMPA, EDTMPS has better scale inhibition performance, and the maximum scale inhibition rate can reach 96.85%. The scale inhibition performance of composite scale inhibitor is better than that of single scale inhibitor, and the scale inhibition rate of the synthesized products can reach more than 90% after compounding. And inhibitory mechanism has been proposed: Because phosphonates effectively control the rate of nucleation. In addition, polyphosphonates can chelate Ca2+, Mg2+ plasma to form monocyclic or bicyclic chelates. This will destroy the normal growth process of calcium carbonate and other crystals, thus preventing the formation of calcium carbonate scale.

Synthesis and Properties of the ESA/AMPS Copolymer

2012 ◽  
Vol 164 ◽  
pp. 194-198 ◽  
Author(s):  
Zhan Liu ◽  
Xin Wang ◽  
Zhen Fa Liu
Keyword(s):  
Calcium Carbonate ◽  
Calcium Phosphate ◽  
Succinic Acid ◽  
Ferric Oxide ◽  
Sulfonic Acid ◽  
Inhibition Rate ◽  
Biodegradation Rate ◽  
Scale Inhibition ◽  
Inhibition Performance ◽  
Better Than

A copolymer was prepared from epoxy succinic acid (ESA) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS). The structure of the ESA/AMPS copolymer was characterized by means of FTIR. The performances of scale inhibition, dispersion and biodegradability of the ESA/AMPS copolymer were studied. The results showed that the scale inhibition performance of the ESA/AMPS copolymer on calcium phosphate and dispersing performance on ferric oxide were much better than PESA. The scale inhibition rate on calcium carbonate was 85% when the ESA/AMPS copolymer was 8mg/L. The scale inhibition rate on calcium phosphate was 65% when the ESA/AMPS copolymer was 30mg/L. The ESA/AMPS copolymer had good biodegradation performance and biodegradation rate could reach 65% after 28 days.

Study on the Polyaspartic Acid Derivative Synthesis and the Scale Inhibition Performance of Calcium Carbonate

2012 ◽  
Vol 610-613 ◽  
pp. 1513-1517
Author(s):  
Gang Lu ◽  
Yue Huang
Keyword(s):  
Electron Microscope ◽  
Calcium Carbonate ◽  
Inhibition Rate ◽  
Polyaspartic Acid ◽  
Static State ◽  
Scale Inhibition ◽  
Overall Performance ◽  
Inhibition Performance ◽  
Intermediate Vector ◽  
Scanning Electron

Intermediate vector polysuccinimide (PSI) was prepared by polymerization of malefic acid and ammonia at 180°Cin this article. Hydrophilic polyaspartic acid (PASP) derivative was prepared from amino-sulfonic and PSI; Lipophilic PASP derivative was prepared from PSI and diisopropylamine. Their scale inhibition rates of calcium carbonate were evaluated by static scale experiments. The inhibition rate of calcium carbonate was 90.2% when n(amino-sulfonic): n(PSI) =1:14 and the dosage of pharmaceutical was 12mg / L. The inhibition rate of calcium carbonate was 87.6% when n(diisopropylamine):n(PSI)=1:8 and the dosage of pharmaceutical was 15mg /L. The calcium carbonate that collected from static state experiments was analysised by scanning electron microscope (SEM). The results showed that polyaspartic acid derivatives were synthesized which had the best overall performance when n (amino-sulfonic): n (PSI) = 1:14.

Research on Corrosion and Scale Inhibition Performance of HEDP

2012 ◽  
Vol 535-537 ◽  
pp. 1180-1184
Author(s):  
Mao Dong Li ◽  
Bin Zeng ◽  
Lin Yang ◽  
Jun Ming Zhao ◽  
Yu Hui Du ◽  
...  
Keyword(s):  
Corrosion Inhibition ◽  
Concentration Ratio ◽  
Inhibition Efficiency ◽  
Total Iron ◽  
Water Medium ◽  
Boiler Water ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
Industrial Boiler ◽  
Inhibition Performance

The static scale inhibition method will be used to evaluate the scale inhibition performance of HEDP. In order to study the corrosion inhibition of 20A steel with additive of HEDP in the industrial boiler water medium，the total iron ions in the solution are determined through autoclave static experiments. The results indicated that the scale inhibition efficiency，in the simulation boiler water with a certain concentration ratio and temperature，reached the maximum when CHEDP is 7 mg/L. It has a good corrosion inhibition effect on the 20A steel when the HEDP concentration exceeds 15ppm.

Effect Evaluation of Inhibitor to Barium Sulfate and Strontium Sulfate

2011 ◽  
Vol 402 ◽  
pp. 41-45
Author(s):  
Chuang Qian Chen ◽  
Kan She Li ◽  
Jie Kang ◽  
Chun Xia Yu ◽  
Jing Liu
Keyword(s):  
Barium Sulfate ◽  
Comprehensive Evaluation ◽  
Production Operation ◽  
Inhibition Rate ◽  
Effect Evaluation ◽  
Scale Inhibitor ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
Strontium Sulfate ◽  
Better Than

Facing at the situation that a large amount of BaSO4/SrSO4, which seriously impacts on oil production operation scale, has been yielded during oilfield production, three kinds of scale inhibitor (TS-09, TH-60 and PBTCA) were collected from oilfield for comprehensive evaluation. The results show that the three kinds of scale inhibitor have certain scale inhibition effect to BaSO4/SrSO4, and the influence of different water quality is obvious. When TH-60 concentration was 100 mg/L, its inhibition rate to BaSO4 has reached 95%. In comparison, scale inhibition effect of TH-60 to BaSO4/SrSO4 is better than the others. TH-60 is more suitable for Huaqing oilfield than TS-09 and PBTCA, concentrations range in 100-180 mg/L especially.

Scale Inhibition of the ESA / AMPS Copolymer with Magnetic Field or Electrostatic Field

2013 ◽  
Vol 773 ◽  
pp. 538-541
Author(s):  
Zhan Liu ◽  
Zhen Fa Liu ◽  
Xin Wang ◽  
Yun Juan Wu ◽  
Li Hui Zhang
Keyword(s):  
Magnetic Field ◽  
Electrostatic Field ◽  
Inhibition Rate ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
The Magnetic Field

The scale inhibition of the ESA/AMPS copolymer under the magnetic field or electrostatic field was researched by using static scale inhibition experiments. The result showed that there were synergistic scale inhibition effect between magnetic field and ESA/AMPS copolymer, and the electrostatic field and ESA/AMPS copolymer also had synergistic scale inhibition. The scale inhibition rate of both magnetic field and ESA/AMPS copolymer on CaCO3 increased by 12% as compared with that of ESA/AMPS copolymer alone. And the synergistic scale inhibition rate on Ca3(PO4)2 increased by 42.4% .The increased scale inhibition rate of the ESA / AMPS copolymer on CaCO3 with electrostatic field was 19%,and the scale inhibition rate on Ca3(PO4)2 could increace 73.3%.

Study on Scale Inhibition Performance of Modified Polyaspartic Acid

2014 ◽  
Vol 893 ◽  
pp. 7-10 ◽  
Author(s):  
Yu Hua Gao ◽  
Zhen Fa Liu ◽  
Li Hui Zhang ◽  
Yun Juan Wu
Keyword(s):  
Cooling Water ◽  
Water Systems ◽  
Solution Temperature ◽  
Inhibition Rate ◽  
Polyaspartic Acid ◽  
Scale Inhibition ◽  
Dynamic Experiments ◽  
Treatment Experiment ◽  
Good Scale ◽  
Inhibition Performance

Static and dynamic experiments were used to evaluate scale inhibition performance of modified polyaspartic acid (PASP-ASP). The static experiments showed that the PASP-ASP had good scale inhibition performance and the scale inhibition rate exceeded 98% when the PASP-ASP was 2 mg·L-1 and the solution temperature was 40 OC. In the dynamic experiments, almost no scale was formed on the heat transfer surface and the fouling thermal resistance decreases extraordinarily with PASP-ASP treatment experiment compared with the experiment without treatment. The PASP-ASP could be used in industrial cooling water systems.

Study on Synergistic Scale Inhibition Performance of the Rare-Earth Permanent Magnetic Material and Polyaspartic Acid

2011 ◽  
Vol 239-242 ◽  
pp. 707-711
Author(s):  
Zhen Fa Liu ◽  
Han Shuo Liu ◽  
Li Hui Zhang ◽  
Mei Fang Yan
Keyword(s):  
Magnetic Field ◽  
Magnetic Material ◽  
Rare Earth ◽  
Water Treatment ◽  
Magnetic Field Intensity ◽  
Water Hardness ◽  
Polyaspartic Acid ◽  
Inhibition Effect ◽  
Scale Inhibition ◽  
Inhibition Performance

The synergistic scale inhibition effect of rare-earth permanent magnetic material and polyaspartic acid is studied. The performance of synergistic scale inhibition is studied in different magnetic field intensity, water hardness and rate of concentration. Static and dynamic scale inhibition tests show that the two water treatment ways have good synergistic scale inhibition effect. The scale inhibition performance of polyaspartic acid can be increased greatly by the magnetization of water.

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