Controlled Synthesis And Mechanism Study Of Composite Materials-between Nano- Ferrite Magnetic Materials And Demulsifier

Oil energy resources are non-renewable,which many countries are very attached great importance to the exploitation and utilization of oil. The minerals mined from underground contain a large amount of water, inorganic salt, solid particles, etc. At present, with crude oil produced by tertiary oil recovery technology, it tends to become mixed with either natural formation water or mixed formation and injection water, which made the oil contain 80-90% of water content. Crude oil dehydration and desalting are very necessary, otherwise, that is difficult to transport and refine. There are a lot of demulsification methods that can be grouped into three main categories: physical demulsification, chemical demulsifier, biological demusification method. Adding chemical reagents is the most widespread method of breaking emulsion.Two kinds of demulsifiers were synthesized in this article. One was that glucosaminedemulsifiers synthesized by the reaction between D-glucose and alkyl amine, according to a two-step process. The other was that by the reactions between DETA and ethylene oxide and propylene oxide monomer, molecular weight of 3000 and 1800 DETA-demulsifiers were synthesized. The synthesized compound have been determined by FTIR, XRD, et al. We simulated the crude oil emulsion and evaluated demulsification performance. The experiment results showed that demulsification performance of DETA-demulsifiers were better than glucosamine-demulsifier. In order to better meet the requirements of demulsification and dehydration, this paper has done a lot of work on demulsifier condition. when the demulsification temperature of 60℃, demulsifier concentration of 100 ppm, molecular weight of 3000 and 1800 DETA-demulsifiers had the highest demulsification rate.Based on the synthesis of demulsifiers, we adopted grafting polymers on surfaces to improve the demulsification rate. First, we discussed the various synthetic methods of iron oxide. By comparison, we have chosen a simple method of synthesis of magnetic nanoparticles which were uniform-sized and well-dispersed. Silane methyl acryloyl oxygen radicals and propyl glycidyl ether oxygen radicals were used to form a graftingcopolymerization of Fe3O4 to demulsifier. when the demulsification temperature of 60℃, Fe3O4/demulsifier concentration of 100 ppm, molecular weight of 3000 and 1800 Fe3O4/DETA- demulsifiers had the highest demulsification rate.In addition, we discussed a variety of methods of inorganic-organic composite particles, such as dispersion method, situ polymerization, surface grafting polymerization. Within this report, Fe3O4/OP-10 composite particles were synthesized by the reaction between Fe3O4 nanoparticles and emulsifier. The analysis technology of FTIR, TGA, XRD, SEM and Raman were used to test the properties of nanoparticles. The best hydrolysis conditions of coupling agent: oxalic acid solution has been used as catalyst; The solution was adjusted to pH 4 at room temperature for hydrolysis of 60 min. The optimum reaction conditions of silane coupling agent on the Fe3O4 nanoparticles: in a water bath at 45℃ for 1 h.