5 results about "Water in oil" patented technology

The invention provides a preparation method for polyvinyl alcohol/silicon dioxide composite microspheres and belongs to a preparation method for a composite microsphere material. Polyvinyl alcohol and tetraethyl orthosilicate are employed as raw materials, and polyvinyl alcohol/silicon dioxide (PVA/SiO2) composite microspheres are prepared in a water-in-oil system without any surfactants. Tetraethyl orthosilicate is hydrolyzed fully in a PVA solution in an acidic condition, and uniform PVA/SiO2 composite sol is formed; the sol is subjected to dispersion and crosslinking in a water-in-oil system without surfactants, and finally PVA/SiO2 composite microspheres are obtained. The technology is simple, the repeatability is good, energy consumption is low and the cost is low. Surfactant residual and agglomeration of nano inorganic particles in the process of preparing composite microspheres through a traditional emulsification method are avoided. The microspheres are advantaged by regular sphere, high dispersibility and uniform microstructure, and can be used as a drug carrier, an injection-type bone tissue repairing material or a heavy metal ion adsorption material.

The invention discloses an intelligent water content detecting device for a wellhead. The intelligent water content detecting device comprises a production pipeline and a metering pipeline which communicates with the production pipeline, wherein an inlet end of the metering pipeline communicates with an inlet of the production pipeline through a three-way valve; an outlet of the metering pipelinecommunicates with an outlet of the production pipeline through a valve; a heating device is arranged on the outer side wall of the metering pipeline; and a detector which extends to the lower end of the metering pipeline from the upper end of the metering pipeline and is distributed with a plurality of water-oil sensors is mounted at the inner side of the metering pipeline. The intelligent water content detecting device avoids inaccurate sampling through an integral sampling mode of the metering pipeline, can be used for directly heating the metering pipeline, and prevents a probe from the scaling problem and the wax-precipitating problem. An oil-water interface of a sealing tube section is measured through the water-oil sensors, so that influences, on water content measuring, of an oil-in-water state and a water-in-oil state are prevented.