Application of anionic polyacrylamide with ultra-low molecular weight and viscosity in oil field, mineral processing and water treatment
High quality polyacrylamide (NPAM) is a linear polymer with high molecular weight and low ionic degree. Non-ionic polyacrylamide (NPAM) has very obvious effects of accelerating solution clarification and filtration. Non-ionic polyacrylamide (NPAM) is widely used in coal mine washing, textile industry auxiliaries, weak acid sewage treatment, metallurgy, mineral processing, chemical grouting agent, soil moisture agent, etc.
1, coal mine washing; It can be used for centrifugal sharing of coal washing tail slag, used in the sedimentation and filtration of coal powder and slime, which can improve the recovery rate of coal powder and filtration rate, and improve the water circulation rate.
2. Textile auxiliaries; Some other chemicals can be added to prepare chemical sizing materials, used in textile sizing, can improve adhesion, permeability and desizing properties, so that the fabric has spinning electrostatic, reduce sizing rate, reduce the skein pulp spot, cloth machine break rate and falling.
3, sewage treatment; When the sewage system is acidic, the selection of non-ionic series polyacrylamide is more suitable, and inorganic flocculant polyaluminum, aluminum sulfate and other use, in water treatment effect is better.
4, metallurgical ore dressing; Such as zinc, manganese, copper flotation and smelting, the leach and residue can be mixed with PAM, improve the sharing efficiency.
5, sand prevention and sand fixation; Non-ionic polyacrylamide dissolved into 0.3% concentration to add crosslinking agent, spray on the desert can prevent sand fixation.
6. Chemical grouting agent; The mixture of 9.5 nonionic polyacrylamide and 0.5 NN-- methylene bisacrylamide can be used as a chemical grouting agent for water plugging of dam, foundation and tunnel.
7, soil moisture agent; Water retention and sand fixation in soil. Hillside grass, tree planting, sand sand dust can play a role in moisturizing agent.
1, polyacrylamide (PAM) use, with 0.01%-0.05% concentration of water solution, to use neutral non-salt debris water is appropriate.
2, polyacrylamide (PAM) dissolution, the non-ionic polyacrylamide products evenly scattered into the stirring water, stirring speed control at 100~300rpm. Proper heating (<60℃) can accelerate the dissolution.
3, adjust the PH value of the treated liquid, so that the non-ionic polyacrylamide products play a full role, through the test to select the best PH value and the amount of this series of products.
4, the addition of non-ionic polyacrylamide (NPAM) product solution, should be accelerated with the treatment of liquid mixing, the emergence of flocculation, slow down the stirring speed, to facilitate the growth of flocculation and accelerated settlement.
Matters needing attention:
1. Dissolution temperature. Dissolution requires a certain temperature to speed up the dissolution. But too high temperature, will make the polymer molecular chain fracture, reduce the use of the effect, the more appropriate dissolution temperature is 50-- 60℃.
2, stirring conditions. Dissolution should avoid too strong shear force stirring, too strong stirring will make molecular chain fracture, thus reducing the use effect. Mixing should use low speed blade, such as anchor type, frame type, multi-layer slurry, etc. The stirring speed is about 60 RPM. Transportation should also avoid the use of high-speed centrifugal pump, piston pump or diaphragm pump is more suitable.
3, evenly dispersed feeding. The key link of polyacrylamide dissolution is the uniform dispersion of feeding. After starting the mixer, it is best to use mechanical vibration screen feeding (screen mesh number is 10 mesh), as far as possible to avoid the production of "large lump", "fisheye" insoluble particles, so that the polyproacrylamide is fully dissolved, play a good use effect.
4, avoid iron solution. It is best to use plastic, enamel, aluminum, stainless steel and other materials in dissolving, stirring and conveying system.
Packaging and storage:
25kg/ bag (lined plastic bag and pasted kraft paper bag).
This product is non-toxic, pay attention to moistureproof, rain proof, avoid sun exposure.