Water-absorbing resin dry glue powder and application thereof in demulsification of oil-water emulsion

Abstract

The invention discloses water-absorbing resin dry glue powder and application thereof in demulsification of oil-water emulsion. The dry glue powder is prepared from the following raw materials in percentage by weight: 10-40% of acrylic acid, 5-20% of sodium hydroxide, 0.5-8% of N-methylolacrylamide, 0.5-5% of ammonium peroxydisulfate, 0.5-2% of sodium sulfite and the balance being water; all the raw materials, except acrylic acid, are prepared into a water solution, a sodium hydroxide water solution reacts with acrylic acid, the neutralization degree is controlled to be 60-85%, then the solution of N-methylolacrylamide, ammonium peroxydisulfate and sodium sulfite is added to react at the temperature of 50-80 DEG C to produce hydrogel; and the hydrogel is cut into small pieces and dried ina drying oven, and the dried hydrogel pieces are smashed into the water-absorbing resin dry glue powder. The water-absorbing resin dry glue powder is added in emulsion and can spontaneously absorb water to expand through mechanical stirring so as to dehydrate the emulsion and realize demulsification. The water-absorbing resin dry glue powder is simple to prepare and easy for industrial production; dehydration and demulsification operations are convenient to implement and have low equipment requirement; and a water-absorbing material has high dehydration capability and is easy to separate and recycle, and can be recycled.

Description

technical field [0001] The invention relates to an oil-water emulsion demulsification method, in particular to a water-absorbing resin dry rubber powder and its application in oil-water emulsion demulsification. Background technique [0002] For oil-water emulsions, traditional demulsification methods include chemical methods, biological methods, electrical methods, thermal methods, and mechanical methods. Among them, the chemical method and the electric method have high efficiency and are the most widely used, but they also have their own shortcomings. The addition of chemical demulsifiers makes the composition of the original emulsion system more complex, and as a result, its application in continuous separation processes is limited. The electric method has low demulsification effect on the emulsion system with high water content and strong interfacial film strength, and there are safety hazards such as short circuit and electric field collapse. Therefore, the developmen...

AI Technical Summary

Problems solved by technology

Although the wetting coalescence method and the grinding method have many advantages, there are also some shortcomings in the actual operation process: for the emulsion system with too high viscosity, the input of mechanical power is very large, and the fine particles are increased after demulsification. Separation issues with abrasive particles or coalescing media

However, this method consumes a lot of energy and is not practical for the demulsification of large-scale emulsions