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Multifunctional demulsifier as well as preparation method and application method thereof

A demulsifier and multi-functional technology, which is applied in the field of non-metallic mineral functional material preparation and wastewater treatment, can solve the problems of single function, high price and high raw material cost, and achieve the effect of reducing cost, wide source and low cost

Active Publication Date: 2022-04-15
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of raw materials for the prepared polymers is high, and polymers such as polyoxyethylene ethers have poor environmental compatibility; they have single functions and do not have external field-driven separation functions and antimicrobial functions.
Chinese patent CN110201551B has prepared polydopamine-coated cellulose membranes with cellulose acetate membranes and dopamine as raw materials, showing good anti-pollution properties and oil-in-water emulsions and dye separation properties, but dopamine (market price ￥ 5400 yuan / kg) and cellulose acetate membrane (the market price of cellulose acetate membrane with a diameter of 47mm and a pore size of 0.45μm is about ￥130 / square meter) are expensive and difficult to prepare and apply on a large scale

Method used

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  • Multifunctional demulsifier as well as preparation method and application method thereof
  • Multifunctional demulsifier as well as preparation method and application method thereof
  • Multifunctional demulsifier as well as preparation method and application method thereof

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preparation example Construction

[0043] The present invention also provides the preparation method of above-mentioned demulsifier, comprises the following steps:

[0044] Step 1: Prepare the carrier, disperse the sepiolite powder into the solvent, add iron salt and zinc salt to obtain a mixed solution; place the mixed solution in a closed space for hydrothermal reaction, and the iron salt will generate trioxide in the hydrothermal reaction Iron and zinc salts generate zinc oxide in the hydrothermal reaction. After the reaction is completed, sepiolite, ferric oxide and zinc oxide compound to form a compound to obtain a carrier, wherein, in the carrier, sepiolite, ferric oxide and oxide The mass ratio of zinc is 10:5-27:0.6-1.8, and the particle size of the carrier measured by a laser particle size analyzer is 2 μm-18 μm.

[0045] In this step, the carrier of the compound of sepiolite, ferric oxide and zinc oxide is generated through hydrothermal reaction, and the particle size of the generated carrier is small...

Embodiment 1

[0065] 10kg of discarded sepiolite combined with chitosan after absorbing Congo red dye was crushed through a 200-mesh sieve, then dispersed in 190L of ethylene glycol, and 30kg of ferric chloride hexahydrate, 3kg of zinc chloride, 0.25 kg betaine and 2kg polyvinylpyrrolidone, ultrasonically stirred to completely dissolve and fully disperse evenly, then placed in a 300L hydrothermal reactor, and reacted at 198°C for 8 hours. After naturally cooling to room temperature, the product is centrifuged to obtain a carrier with a beaded structure loaded with carbon, zinc oxide nanoparticles and ferric oxide nanoparticles, and at the same time, ethylene glycol is recycled. After the obtained carrier was washed with water, it was dispersed into 100L of a mixed solution containing 1.8kg chitosan and 0.2kg chitosan oligosaccharide, so that the chitosan and chitosan oligosaccharide were fully coated on the surface of the carrier, and then dispersed into a solution containing 1kg β- Into th...

Embodiment 2

[0067] 10kg of discarded sepiolite combined with chitosan after absorbing tetracycline was crushed through a 200 mesh sieve, then dispersed in 190L of ethylene glycol, 10kg of iron sulfate, 3kg of zinc sulfate, 0.5kg of betaine and 0.5kg of Polyvinylpyrrolidone, ultrasonically stirred to make it completely dissolved and fully dispersed evenly, then placed in a 300L hydrothermal reactor, and reacted at 180°C for 15h. After naturally cooling to room temperature, the product is centrifuged to obtain a carrier with a beaded structure loaded with carbon, zinc oxide nanoparticles and ferric oxide nanoparticles, and at the same time, ethylene glycol is recycled. After the obtained carrier was washed with water, it was dispersed into 100L of a mixed solution containing 1.8kg chitosan and 0.2kg chitosan, so that the chitosan and chitosan were fully coated on the surface of the carrier, and then dispersed to a concentration of 0.5 kg after separation. Into the saturated solution of kgα-...

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Abstract

The invention discloses a multifunctional demulsifier as well as a preparation method and an application method thereof. The demulsifier comprises a carrier, a natural polysaccharide compound coated outside the carrier and cyclodextrin grafted on the natural polysaccharide compound through a cross-linking agent, the carrier is a composite compound formed by sepiolite, ferroferric oxide and zinc oxide; in the carrier, the mass ratio of the sepiolite to the ferroferric oxide to the zinc oxide is 10: (5-27): (0.6-1.8); the particle size, measured by a laser particle analyzer, of the carrier is 2-18 [mu] m; the mass ratio of the carrier to the natural polysaccharide compound to the cyclodextrin is (17-60): 2: (0.5-2). The demulsifier prepared by the invention has multiple functions of high demulsification speed, magnetic response, adsorption of organic pollutants such as dyes, antibiosis and the like, and is a green and environment-friendly product.

Description

technical field [0001] The invention relates to the technical field of preparation of non-metallic mineral functional materials and waste water treatment, in particular to a multifunctional demulsifier and its preparation method and application method. Background technique [0002] In industries such as petroleum water flooding / steam flooding, heavy oil emulsification and viscosity reduction, petroleum processing, iron and steel smelting and machinery manufacturing, a large amount of waste oily emulsions will be generated during oil transportation, lubrication, cooling, surface cleaning and anticorrosion. Due to the effect of surfactants, these industrial waste oily emulsions have a higher degree of oil dispersion, which makes it more harmful to animals, plants and aquatic organisms. At the same time, in addition to mineral oil and surfactants, there are also emulsifiers, extreme pressure agents, corrosion inhibitors, bactericides, and foam inhibitors in waste oily emulsions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/04B01D17/12C08J3/24C08L5/08C08L5/16
CPCY02W10/37Y02W10/10
Inventor 王文波王一雯韩雷陆航刘翔宇何庆东王雪
Owner INNER MONGOLIA UNIVERSITY
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