8results about How to "Rapid demulsification" patented technology

The invention discloses a modified flocculant and equipment for rapidly removing microplastics in drinking water, and the modified flocculant is a polyaluminum sulfate-titanium tetrachloride-poly dimethyl diallyl ammonium chloride ternary composite flocculant. The pH application range value is increased by compounding with the poly dimethyl diallyl ammonium chloride, the charge neutralization bridging and netting capabilities are enhanced, and the adsorption bridging through a polymer chain is enhanced, so that the flocculant has the advantages of strong flocculation capability, quick demulsification, high settling velocity and small flocculant volume; and the water purifier has very strong purification capacity on fine suspended matters such as micro-plastics in water. Through the special flocculant adding, stirring and precipitation structure design, the removal rate of the micro-plastics is remarkably improved.

The invention discloses a tree-shaped heavy oil demulsifier with magnetic response as well as a preparation method and application thereof. The demulsifying agent comprises composite magnetic nano particles, the composite magnetic nano particles are provided with magnetic particle inner cores and polymers coated on the outer surfaces of the magnetic particle inner cores, the magnetic particle inner cores are modified superparamagnetic ferroferric oxide nano particles, and the polymers are alkyl phenolic resin polyoxyethylene polyoxypropylene ether. Rapid demulsification of the emulsion with the magnetic response effect at the low temperature is successfully achieved, the using amount of magnetic particles is small during demulsification, and the demulsification process is environmentally friendly, efficient and low in cost.

The invention discloses a treatment method of retainer cleaning water and mold processing cutting fluid, and belongs to the technical field of industrial sewage treatment. The mixed sewage of holder cleaning water and mold processing cutting fluid is subjected to first filter pressing and then conveyed into a sewage pool to adjust the pH value, the sewage oil removal agent accounting for 70% of the total weight of the sewage oil removal agent and the sewage are synchronously conveyed into a stirring cylinder to be stirred, then second filter pressing is conducted, and the sewage oil removal agent is obtained. Adding the rest 30% by weight of the sewage oil removal agent into a second stirring cylinder for treatment, then carrying out third filter pressing, conveying the sewage oil removal agent into a sedimentation tank, adding a bactericide, and standing in the sedimentation tank to obtain treated water. According to the process, the sewage and the sewage oil-removing liquid medicine are simultaneously input into the stirring cylinder, so that the contact area of the liquid medicine and the sewage can be increased, the sewage oil-removing liquid medicine can play a role in the conveying process, and the sewage treatment efficiency is improved.

The invention belongs to the technical field of surfactants, and particularly relates to a magnetic low-temperature thick oil demulsifier as well as a preparation method and application of the magnetic low-temperature thick oil demulsifier. The preparation method comprises the following steps: reacting phenol-amine resin with black particles with carboxyl groups to obtain phenol-amine resin modified magnetic ferroferric oxide nanoparticles; the magnetic ferroferric oxide nanoparticles modified by the phenol-amine resin are dispersed in secondary water to form the demulsifier, the formed demulsifier successfully realizes rapid demulsification of an emulsion with a magnetic response effect at a low temperature, and when the demulsifier is used for demulsification, the amount of the magnetic particles is small, and the magnetic particles can rapidly move to an oil-water interface; when an external magnetic field is introduced to the bottom of the emulsion, the magnetic particles are affected by magnetic field force, the original stress balance state is damaged, the magnetic particles move towards the bottom of the container, and rapid emulsion breaking of the emulsion is achieved.

The invention belongs to the technical field of surfactants, and particularly relates to superparamagnetic ferroferric oxide nanoparticles as well as a preparation method and application thereof. Ferroferric oxide is modified by ethylene polyamine polyether to form the superparamagnetic ferroferric oxide nano-particle with a core-shell structure, the superparamagnetic ferroferric oxide nano-particle comprises an internal core and a shell layer on the outer layer of the core, the shell layer is ethylene polyamine polyether, the core is the superparamagnetic ferroferric oxide nano-particle, and the core and the shell layer are successfully connected through a Si-O bond. The demulsifier prepared from the superparamagnetic ferroferric oxide nanoparticles can realize rapid demulsification of the emulsion under the magnetic response effect at a low temperature, the magnetic particles are small in dosage and can rapidly move to an oil-water interface when the emulsion is demulsified, when an external magnetic field is introduced to the bottom of the emulsion, the magnetic particles are subjected to the magnetic field force effect, the original stress balance state is destroyed, and the demulsification effect of the emulsion is improved. And the magnetic particles move towards the bottom of the container, so that the emulsion is quickly demulsified.

The invention discloses a hyperbranched polymer, a demulsifier and a preparation method and application of the hyperbranched polymer and the demulsifier. The preparation method of the hyperbranched polymer comprises the following steps: in a solvent, taking a tricarboxylate compound and a first diamine compound to react to obtain a primary grafted product; reacting the primary grafting product with a first olefine acid methyl ester compound to obtain a first intermediate product; reacting the first intermediate product with a second diamine compound to obtain a secondary grafted product; reacting the secondary grafting product with a second olefine acid methyl ester compound to obtain a second intermediate product; reacting the second intermediate product with a third diamine compound to obtain a third grafted product; and reacting the tertiary grafted product with alkyl glycidyl ether to obtain the hyperbranched polymer. The prepared hyperbranched polymer is used as a crude oil emulsion demulsifier, has excellent interfacial activity, can quickly demulsify at low temperature, and has good thermal stability and acid-base tolerance.

The invention discloses a demulsifier for oilfield sewage treatment, and relates to the technical field of sewage treatment. The preparation method of the demulsifier comprises the following steps: S1: after monomer A, monomer B and a catalyst are mixed evenly, propylene oxide is added and mixed evenly, and the mixture is reacted for 2-3 hours at 120-130°C, and then aged for 0.5-1.5 hours to obtain a low molecular weight polyether; S2: ethylene oxide is added to the low molecular weight polyether of step S1, mixed evenly, heated to 130-140°C, reacted for 2-3 hours, aged for 1-2 hours, cooled, washed, and obtained a high molecular weight polyether; S3: the high molecular weight polyether, monomer C, initiator and solvent in S2 are mixed evenly, the temperature is increased to 55-80°C, the mixture is reacted for 2-4 hours, cooled, and obtained a demulsifier. The demulsifier prepared by the invention not only has a good demulsification effect, but also has high stability and durability.

The application provides an emulsified asphalt without sticking to a wheel and a preparation process thereof. High molecular polymers such as SBS, SEBS and PE are introduced into the asphalt as modifiers, so that the high temperature stability and mechanical properties of the asphalt are significantly improved, and the rapid demulsification requirement is met. Meanwhile, a filler is introduced to enhance the wear resistance and durability, and a stabilizer and an emulsifier are matched to prevent the emulsion from being stratified and ensure the mixing stability. The prepared emulsified asphalt has the characteristics of rapid demulsification, high temperature stability, excellent mechanical properties and non-sticking to a wheel, and the construction efficiency is improved.