First, the product overview
[product name] polyacrylamide abbreviation (amide)
[English name] polyacrylamide abbreviation (PAM)
[Executive Standards] GB/T17514-2008
[Product Appearance] Pure white particles
Polyacrylamide PAM, which is divided into anionic (APAM) cation (CPAM), a linear polymer, is one of the widely used varieties of water-soluble polymer compounds, polyacrylamide and Its derivatives can be used as effective flocculants, thickeners, paper enhancers and liquid drag reducers. They are widely used in water treatment, paper making, petroleum, coal, mining and metallurgy, geology, textile, construction and other industries. department.
Second, technical indicators:
|
Name
|
Molecular weight (million)
|
Ionity (%)
|
PH
|
Solid content%
|
Residual order%
|
Exterior
|
|
CPAM
|
800-1200
|
10-88
|
1-14
|
≥90
|
≤0.05
|
White granule powder
|
|
APAM
|
800-2000
|
|
7-14
|
≥90
|
≤0.05
|
White granule powder
|
|
NPAM
|
800-1500
|
≤3
|
1-8
|
≥90
|
≤0.05
|
White granule powder
|
Third, product selection considerations:
1 The choice of flocculant must fully consider the requirements of the process and equipment.
2 The strength of the flocs can be increased by increasing the molecular weight of the flocculant.
3 The charge value of the flocculant must be screened by experiment.
4 Climate change (temperature) affects the selection of flocculants.
5 Select the molecular weight of the flocculant according to the floc size required by the treatment process.
6 The flocculant must be thoroughly mixed with the sludge before treatment.
Features:
1. The polyacrylamide molecule has a positive gene, which has strong flocculation ability, low dosage and obvious treatment effect.
2, good solubility, high activity, the formation of sputum in the water body is large, the sedimentation is fast, 2-3 times larger than the purification ability of other high molecular polymers.
3. The adaptability is strongly affected by the PH value and temperature of the water. After the raw water is purified, it reaches the national reference water standard. After treatment, the suspended particles in the water reach the purpose of flocculation and clarification, which is beneficial to the ion exchange treatment and the preparation of high purity water.
4, low corrosivity, easy to operate, can improve the labor intensity and labor conditions of the drug administration process
Polyacrylamide application range
The polyacrylamide molecule has a positive gene (-CONH2), which can absorb and bridge the suspended particles dispersed in the solution. It has a strong flocculation effect, which can accelerate the sedimentation of particles in the suspension, which is very obvious. It speeds up the clarification of the solution and promotes filtration, so it is widely used in water treatment and power, mining, coal preparation, asbestos products, petrochemical, paper making, textile, sugar, medicine, environmental protection, etc.
1. As a flocculant, it is mainly used in industrial solid-liquid separation process, including sedimentation, clarification, concentration and sludge dewatering. The main industries used are: urban sewage treatment, paper industry, food processing industry, petrochemical industry, Wastewater treatment in the metallurgical industry, the beneficiation industry, the dyeing industry and the sugar industry and various industries. Used in the municipal sewage and sludge, sludge and sludge dewatering in the treatment of meat, poultry and food processing wastewater, through the positive charge groups contained in it, the neutral neutralization of the negatively charged organic colloid in the sludge and The excellent bridging function of the polymer causes the colloidal particles to aggregate into a large floc and separate from the suspension. The effect is obvious and the dosage is small.
2. It can be used as paper dry strength agent, retention aid and filter aid in the paper industry, which can greatly improve the quality of paper formation, save costs and improve the production capacity of paper mills. It can directly bridge the inorganic salt ions, fibers and other organic polymers to enhance the physical strength of the paper, reduce the loss of fibers or fillers, speed up the filtration, enhance, retain and filter, and can also be used The treatment of white water, at the same time, can have a significant flocculation effect during the deinking process.
3. In the fiber slurry (asbestos-cement product), the asbestos-cement product can be improved in drainage and the strength of the asbestos board material can be improved; in the insulating plate, the bonding ability of the additive and the fiber can be improved.
4. It can be used as clarifying agent for mine wastewater and coal washing wastewater in mining and coal preparation industry.
5, can be used for the treatment of dyeing wastewater, leather wastewater, oily wastewater, to remove turbidity, decolorization, in order to meet emission standards.
6. In the purification of phosphoric acid, it contributes to the separation of gypsum in the wet process phosphoric acid process.
7. Water treatment flocculant used in waterworks of rivers and rivers.
Sixth, use methods and precautions:
1. It is preferred to formulate an aqueous solution having a concentration of 1‰--3‰ in a practical neutral salt-free water.
2. Due to the wide range of PH values ??applicable to this product, the dosage is generally 0.1-10ppm (0.1-10mg/L).
3. Fully dissolve. When the water is required to be fully stirred, the powder is slowly and uniformly added to prevent the blockage of pipes and pumps caused by large flocs and fish eyes.
4. The stirring speed is generally 200 rpm, the time is not less than 60 minutes, and the water temperature is appropriately increased by 20-30 degrees Celsius to accelerate the dissolution. The maximum temperature of the liquid should be less than 60 degrees.
5. Determine the appropriate dosage. Determine the appropriate amount by experiment before use. Because the dosage is too low, it does not work, and the dosage is too high, but it is counterproductive. When the concentration exceeds a certain concentration, PAM not only does not flocculate, but is dispersed and stably used.
6. This product should be stored in a cool, dry place to prevent moisture.
7. Work places should be washed frequently with water and kept clean. Because of its high viscosity, the PAM under the ground is smooth and the ground is smooth, preventing the operator from slipping and causing a safety accident.
8. This product is lined with plastic bag, and the outer layer is made of plastic laminating woven bag, 25Kg per bag.
Seven, physical properties and use characteristics
1. Physical properties: molecular formula (CH2CHCONH2)r
PAM is a linear polymer which is easily soluble in water and almost insoluble in common organic solvents such as benzene, ethylbenzene, esters and acetone. Its aqueous solution is almost transparent and viscous liquid, which is non-dangerous. Toxic, non-corrosive, solid PAM is hygroscopic, hygroscopicity increases with increasing ionicity, PAM has good thermal stability; heating to 100 °C has good stability, but it is easy to decompose and generate nitrogen at above 150 °C. Intermolecular imidization does not dissolve in water, density (g) ml 23 ° C 1.302. At a glass transition temperature of 153 ° C, PAM exhibits non-Newtonian fluidity under stress.
2, the use of features
Flocculation: PAM can make suspended matter through electric neutralization, bridging adsorption, and flocculation.
Adhesion: It can be bonded by mechanical, physical, or chemical action.
Resistance reduction: PAM can effectively reduce the frictional resistance of the fluid. Adding a small amount of PAM to the water can reduce the resistance by 50-80%.
Thickening: PAM has thickening effect under both neutral and acidic conditions. When the pH value is above 10 °C, PAM is easy to hydrolyze and has a semi-network structure, thickening will be more obvious.
Eight, packaging storage notes:
This product is non-toxic, pay attention to moisture, rain, and avoid sun exposure.
Storage period: 2 years, 25kg paper bag (with plastic bag outside the plastic bag).
phone:
Cellphone:
Q Q:
Mailbox:
Address:
