Polyacrylamide

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seat: Beijing
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Last update: 2017-11-17 09:02
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Polyacrylamide flocculant No. 3; colloidal polyacrylamide type Ⅰ; Ⅱ type of colloidal polyacrylamide
[English name] Polyacrylamide
The acronym PAM.
[Formula] C3H5NO
Product Features:
The product molecules with suspended particles dispersed in solution bridging adsorption, there is a strong flocculation. Density = 1.3
The main purpose:
The product has a lively group on water-soluble polymer compound as well as its backbone, and thus in oil exploration, water treatment, textile printing and dyeing, paper making, mineral processing, coal washing, medicine, sugar, farming, building materials, agriculture and other industries with a wide range of application, the "Better business additives," "universal product," he said.
1. The field of water treatment
PAM in the water treatment industry mainly include raw water treatment, sewage treatment and industrial water treatment three aspects. In the original water treatment, PAM with activated carbon used in conjunction, can be used to gather and clarify the living water of suspended particles; in wastewater treatment. PAM can be used for sludge dewatering; in industrial water treatment, mainly for pharmaceutical formulations. In the original water treatment, organic flocculants PAM instead of inorganic flocculants, even without transformation settling tank, water capacity can be increased by more than 20%. So now many cities in water-stressed or water quality is poor, the PAM are used as a supplement. In sewage treatment, the use of PAM can increase water reuse by cyclic utilization.
2. The field of oil extraction
In oil, the main material used in drilling mud and improve aspects of oil recovery, widely used in drilling, completion, cementing, fracturing, enhanced oil recovery and other mining operations in the field, with thickening, fluid loss, rheology regulation, gelling, triage, profile adjustment and other functions. At present, China has entered the oil exploration in the late, to enhance oil recovery, mainly to promote polymer flooding and ASP flooding technology. By injecting an aqueous solution of polyacrylamide to improve water flow rate ratio, making mining effluent crude oil content increased. At present, foreign polyacrylamide in oilfield much, our country due to the special geological conditions, Daqing Oilfield and Shengli Oilfield has begun widely used polymer flooding technology.
3. The paper sector
PAM is widely used in the papermaking art resides agent, filter aid are degrees agent. Its role is to improve the quality of the paper, pulp dewatering improve performance, increase retention of fine fibers and fillers to reduce the consumption of raw materials and environmental pollution. Effect used in papermaking depend upon the activity of average molecular weight, ionic nature, ionic strength, and other copolymers. Nonionic PAM is mainly used to improve the pulp was filtered, and increase the strength of dry paper, to improve the retention of fiber and filler; anionic copolymer mainly used for wet and dry paper enhancer and resides agent; a cationic copolymer main used in papermaking wastewater treatment and filter aids, in addition to improving filler retention and has a good effect. In addition, PAM is also used in papermaking wastewater treatment and fiber recovery.
4. Textile industry
In the textile industry, sizing agents PAM as a post-treated fabrics, finishing agents, can generate a supple, wrinkle-free, mold-resistant protective layer. Using its strong hygroscopic characteristics, can reduce the breakage rate of spinning yarn; after PAM for treatment agent can prevent fabric-static and flame retardant; when used as auxiliaries, make the product adhesion fastness large, vividness high, it can also be used as bleaching non-silicone polymer stabilizers; can also be used for purification of textile printing and dyeing wastewater.
5. Other areas
In mining, coal washing areas, the use of PAM as a flocculant can promote mining, coal washing recycled water solids sedimentation, water clarification, recyclable useful solid particles at the same time, to avoid environmental pollution; in the sugar industry, sugar cane can be accelerated sinking juice fine particles to promote filtering and improve clarity of the filtrate; in the breeding industry, can improve water quality, increase light transmission properties of the water, thereby improving water photosynthesis; in the pharmaceutical industry, can be used as separate antibiotics flocculant used as an adhesive tablet excipients and process water clarifying agent; in the building materials industry, used as a coating thickening dispersant, sawing stone plate coolant and ceramic bonding agent; in agriculture, It can be used as superabsorbents used as a soil humectant and the seed culture and the like. In the construction industry, can enhance the hardness of gypsum cement, asbestos cement accelerate dehydration speed. In addition, it can be used as natural or synthetic leather protective coatings and inorganic fertilizer granulation additives.

Physical indicators:
The product is commonly known as flocculants or cohesion agent, is a linear polymer having a molecular weight between 300-2500 million, or solid product appearance is white powder particles, as a colorless viscous colloidal liquid, soluble in water, almost insoluble in an organic solvent. The application should be dissolved at room temperature, easily decomposed when the temperature exceeds 150 ℃. Non-dangerous goods, non-toxic, non-corrosive. PAM hygroscopic solid, flocculation, adhesion, reduction in resistance, thickening, while good stability.
Instructions:
1. The dissolution method
Before use solid particles dissolved into an aqueous solution of 1 ‰ --- 5 ‰ concentration so quickly to be effective in dosing, the drug should be taken to gradually sexual way home, throw water in slowly, they uniformly in water dispersion, dissolution.
2. Add liquid to dissolve
Typically by adding about 0.5 ‰ --- 1 ‰ aqueous solution, but at a high concentration and a high viscosity of the suspension of the case, recommended that the aqueous solution is further diluted to become 0.1 ‰, will be easy to mix and play its full effect.
3. Cationic relatively low molecular weight anionic viscosity and thus relatively weak anion, it is cationic, nonionic, anionic slightly higher than the ratio of the concentration of the standard. (As the case may be, the same can be adjusted based on the concentration of water concentration high turbidity, low concentrations .. low turbidity can be appropriately increased concentration) recommended that a concentration of 5 ‰ - 1%.
note:
1. preparation of PAM solution should be enamel, zinc, aluminum or plastic bucket carried non-formulated and stored in iron containers.
2. When dissolved, should pay attention to the product evenly and slowly added with stirring and heating dissolver measures, avoid knot solid solution is formulated in the appropriate temperature and should avoid prolonged drastic mechanical shear Recommendation blender 60-200 turn / min, otherwise it will lead to degradation of the polymer, affect the results.
3. PAM solution should be done now with the existing, place a long time when the dissolved solution, its performance will be subject to availability and water quality decreased.
4. After the suspension Tim home flocculant solution, if prolonged vehemently agitated, it will destroy already formed flocs.
A cationic polyacrylamide
Product Features:
     Cationic polyacrylamide (CPAM) the appearance of white powder, molecular weight from 8 million to 15 million. Ions of from 20% to 55% water soluble, can be dissolved in water in any proportion and insoluble in organic solvents. Effective PH value in the range of 1-14, showed high polymer electrolyte properties, with a negative charge and applicable wastewater treatment rich organics.
use:
     Sludge dewatering: sewage nature can choose according to the appropriate grade of the product, which can effectively before the sludge into the filter press sludge dewatering gravity dehydration, resulting floc large, non-stick filter cloth, filter press when not dispersed. with less dehydration, high efficiency, the cake moisture content below 80% of sewage and organic wastewater treatment: this product is acidic or alkaline medium showed a cationic, so that the sewage effluent suspended particles with a negative charge carried flocculation, clarification is extremely effective, such as alcohol plant wastewater, brewery waste water, monosodium glutamate factory waste water, sugar factory wastewater, meat plant wastewater, beverage plant wastewater, textile printing and dyeing wastewater using cationic polyacrylamide than anionic polyacrylamide, nonionic polyacrylamide or inorganic salt effect is several times or several times higher, because such waste generally with a negative charge waterworks water treatment flocculant: the product has to use less, effective low cost, and bid farewell to the mixed use inorganic flocculants better oilfield chemicals: such as clay anti-swelling agent, oilfield acidification thickening agent products, such as paper additives: the cationic PAM paper enhancer is a soluble cationic polymer containing carbamoyl, with enhanced, retention, filtration and other functions, can effectively improve the strength of paper. Meanwhile, the product is an efficient dispersant.

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