Polyacrylamide production device and method

Abstract

The invention relates to the field of chemical industry production and manufacturing, in particular to a polyacrylamide production device and method. The polyacrylamide production device comprises a preparation assembly, a polymerization assembly, a granulation assembly, a drying assembly, a smashing assembly, a tail gas treatment assembly and a controller, in the preparation process, an acrylamide solution and a sodium carbonate solution are added into a preparation kettle, and an initiator is added into a polymerization kettle; a heating jacket enables the temperature in the polymerization kettle to be constant, nitrogen is introduced into the polymerization kettle under the stirring condition, a pelletizer treats colloid into particles, the polyacrylamide particles are dried and treated through a pulverizer and a vibrating screen to obtain a polyacrylamide finished product and fine powder, and a dust remover conducts harmless treatment on tail gas generated by the large cyclone. The polyacrylamide production device and method has the advantages that ta packing auger can well control the glue discharging speed and dosage; a rotary cross-flow drying bed and a fluidized drying bed can reduce heat loss; the polyacrylamide fine powder is further screened by a second small cyclone and a vibrating screen; and the large cyclone collects and screens the tail gas, and the tail gas is discharged outwards after being treated by the dust remover.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a production device and method of polyacrylamide. Background technique [0002] The most valuable properties of polyacrylamide are its high molecular weight and strong water solubility. It can produce hydrophilic and water-insoluble gels. It can introduce various ionic groups and adjust the molecular weight to obtain specific properties. It is suitable for many solid surfaces and Dissolved substances have good adhesion. Due to these properties, polyacrylamide is widely used in many aspects such as thickening, flocculation, colloid stabilization, drag reduction, bonding, film formation, scale inhibition, gel and biomedical materials. The largest application of PAM is in the fields of water treatment, papermaking, oil extraction, and mining control. In addition, polyacrylamide has broad application prospects and huge potential markets in the water treatment industry. With the cont...

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Problems solved by technology

[0004] During the polymerization of raw materials, the traditional reactor is directly discharged from the outlet at the bottom, and it is difficult to discharge the polyacrylamide in the form of glue. In the subsequent drying process, because the dryer does not have a stable and continuous feed, the product is over-dried. Cause crosslinking, make the solubility of the product worse, reduce production efficiency and product quality

After the polyacrylamide colloidal particles are dried, they are separated by a cyclone separator. After the polyacrylamide colloidal particles are separated, the tail gas still contains fine particles. The traditional method generally directly discharges the tail gas, which is not conducive to energy saving and emission reduction.

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