A treatment method of nano-silica particles for oil drag reducer

Abstract

The invention relates to a treatment method of nano silica particles for an oil product drag reducer. The method comprises the following steps: firstly, putting a nano silica dispersion liquid into an ultrasonic environment, and dissolving the nano silica particles into a nano silica dispersion liquid in batches until the solution is clear; mixing a compound silane coupling agent I, a modifier assistant and deionized water, adding the mixture to the nano silica dispersion liquid in batches, refrigerating at a low temperature, and carrying out treatment in an air isolating manner; carrying out centrifugal treatment on the nano silica dispersion liquid for three times, dissolving the centrifuged nano silica dispersion liquid into normal heptane, and adding a compound silane coupling agent II in batches, wherein the nano silica dispersion liquid is N-methyl pyrrolidone and normal heptane, the compound silane coupling agent I is KH-550 and KH570, and the compound silane coupling agent II is KH-550, KH560 and A-172. According to the method, the compound experiment process of the oil product drag reducer is optimized; good dispersion of nano silica packing and the stability and invariance of organic matrix in the compound process are ensured; and the compound efficiency is improved.

Description

technical field [0001] The invention relates to a surface treatment method of nano silicon dioxide particles in the process of preparing composite materials from oil drag reducers, and belongs to the post-treatment technology of composite oil drag reducers in the field of pipeline chemical additives. Background technique [0002] Oil drag reducer is a kind of high molecular polymer, which can reduce the frictional energy loss in the oil flow through the elastic deformation of the molecular chain, reduce the flow resistance, and achieve the effect of reducing drag and increasing transmission. The oil drag reducer can increase the output without adding additional equipment after the original pipeline reaches the maximum output; or reduce the operating pressure of the oil pipeline and reduce safety risks while maintaining the same output. The oil drag reducer has the characteristics of low cost, quick effect, obvious drag reduction, and flexibility and convenience. It can reali...

AI Technical Summary

Problems solved by technology

However, the current high molecular weight polymers with a molecular weight of several million are very easy to lose the drag reduction function-shear degradation due to the molecular chain breakage to reduce the molecular weight, and this kind of degradation property is permanent and irreversible, so the oil flow After passing through a high-shear environment (such as laminar flow boundary layer, pump, elbow and other environments with large velocity gradients or large turbulent fluctuations), it is necessary to add drag reducer to maintain the corresponding drag reduction effect