Reduced graphene oxide/nano-TiO2 composite demulsifier and preparation method thereof

A composite demulsification and graphene technology, which is applied in the direction of chemical dehydration/demulsification, graphene, titanium oxide/hydroxide, etc., can solve the problem of poor demulsification performance, toxic and harmful substances, and polymer demulsifiers. Degradation and other problems, to achieve high salt resistance, easy storage and transportation
CN110482533AActive Publication Date: 2019-11-22YANGTZE UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
YANGTZE UNIVERSITY
Publication Date
2019-11-22

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Abstract

The invention discloses a reduced graphene oxide / nano TiO2 composite demulsifier and a preparation method thereof. The preparation method comprises the following steps: preparing graphene oxide with carboxyl and hydroxyl on the surface; performing surface modification with nano TiO2 generated by in-situ hydrolysis of an organic titanium precursor on graphene oxide, and then carrying out hydrothermal reduction to obtain the reduced graphene oxide / nano TiO2 composite demulsifier. The invention also provides the reduced graphene oxide / nano TiO2 composite demulsifier obtained by the method. The demulsifier provided by the invention has the characteristics of high efficiency and environmental protection, does not pollute the environment, can be suitable for neutral and acidic conditions, and has high salt tolerance; and meanwhile, the demulsifier can be transferred into an oil phase after demulsification, so that the demulsifier is prevented from staying in a water phase to influence subsequent use of the water phase.
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Description

technical field

[0001] The invention relates to oilfield chemicals, in particular to a reduced graphene oxide / nano-TiO 2 Composite material demulsifier and preparation method thereof. Background technique

[0002] In the early days of oil production, researchers were primarily concerned with the demulsification of water-in-oil emulsions resulting from the development of oilfields with less water content. However, with the over-exploitation of traditional fossil fuels and the gradual aging of oilfields, technologies and methods are constantly innovating, such as tertiary oil recovery technology is widely used to increase production in my country and other countries. Introducing steam, water, and extraction aids into the reservoir produces a stable oil-in-water emulsion in large quantities. In addition, conventional oil field development and industrial refineries also generate large amounts of oily wastewater. All oily wastewater poses serious environmental problems and req...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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