Preparation method and application of fiber material for oil-water separation

A fiber material and oil-water separation technology, applied in the field of water treatment, can solve problems such as hazards and biological micro-toxicity, achieve the effects of reducing internal stress of fibers, preventing stress cracking and warping, and improving coalescence and oil-water separation efficiency

Active Publication Date: 2021-03-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been reported that dibutyl phthalate and dioctyl phthalate in the phthalates used, as well as systems containing diphenyl ether, have biological microtoxicity and can be absorbed through the gastrointestinal tract, respiratory tract and skin When it enters the body, it is easy to affect the labor environment and cause harm during the preparation of porous fibers, and its use is restricted by the EU REACH regulations. Therefore, with the increasingly stringent environmental protection laws, there is a demand for environmentally friendly green diluents or low-toxic, low-harm solvents. will become stronger

Method used

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  • Preparation method and application of fiber material for oil-water separation
  • Preparation method and application of fiber material for oil-water separation
  • Preparation method and application of fiber material for oil-water separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-28 and comparative example 1-11

[0072] (1) Take polypropylene resin and add it to the spinning kettle with stirring device, mix it with polyvinylidene fluoride and diluent in proportion, heat it to a certain temperature and melt it, and stir it for a period of time under the condition of nitrogen flow, stop stirring and let it stand Leave it for a period of time to defoam to obtain spinning solution.

[0073] (2) After the spinning solution is filtered by the filter, the spinning solution is transported to the spinneret by a metering pump, and then the spinning solution melt is extruded at a constant rate to become a primary fiber, which is passed through the air spinning process and then three-stage solidification The bath is cooled to obtain fiber filaments, which are then collected by winding with a pulley.

[0074] (3) The obtained fiber filaments are put into an extractant for extraction for a period of time, and then dried naturally in a fume hood to remove the moisture adsorbed on the surface to obtai...

Embodiment 29-59 and comparative example 12-23

[0084] use figure 1 The shown device treats oily wastewater from a refining and chemical enterprise. The wastewater has a pH of 7.5 and an oil content of 1479mg / L.

[0085] (1) The fibrous materials prepared by Examples 1-28 and Comparative Examples 1-11 are packed in layers and compacted respectively in the bed of the coalescer, and the filling volume ratio is 1 / 2;

[0086] (2) Pump the oily sewage with a temperature of 30-50°C in the liquid storage tank into the sewage tank through the sewage pump;

[0087] (3) Open the flow regulating valve, flow meter, pressure stabilizing valve and air source, pump the liquid in the sewage tank into the coalescer through the feed pump, and control the influent flow at 0.1-0.5m by adjusting the flow regulating valve 3 / h.

[0088] After the operation is stable, the data is measured and the oil removal rate is calculated.

[0089] The data of each embodiment and comparative example are shown in Table 2.

[0090] Table 2

[0091]

[...

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Abstract

The invention discloses a preparation method of a fiber material for oil-water separation and the fiber material prepared by the method. The preparation method includes the steps of S1, carrying out spinning treatment on a mixture containing polypropylene, polyvinylidene fluoride and a diluent to obtain nascent fibers; S2, enabling the nascent fiber to pass through an air spinning path of 10-100 mm; S3, cooling the nascent fibers obtained in the step S2 to obtain fiber filaments; and S4, carrying out extraction treatment on the fiber filaments to obtain the fiber material. The preparation method of the fiber material for oil-water separation is simple and convenient in process and short in production path, and the fiber material prepared by the method is moderate in aperture, high in mechanical strength, excellent in separation performance, applied to oil-water separation and high in separation efficiency. The invention also provides a device for oil-water separation. The device is simple in structure and low in power consumption, and has no need of adding any medicament, favorable removal effect on oil stains in sewage, low pollution and favorable application prospects in the field of oily sewage treatment.

Description

technical field [0001] The invention relates to a method for preparing a fiber material used for oil-water separation, the fiber material prepared by the method, and its application in oil-water separation, and also relates to a device for oil-water separation, which belongs to the technical field of water treatment. Background technique [0002] Oily sewage will be produced in the process of oil exploitation, petroleum refining, petrochemical industry, oil storage and transportation, etc. The output of oily sewage in my country is extremely high, and oil fields and oil refining industries alone produce more than 3 billion tons of oily sewage every year. One of the most difficult industrial waste water, with the increasingly stringent environmental protection requirements and energy saving and consumption reduction, the comprehensive discharge standard for sewage (GB8978-1996) and the pollutant discharge standard for petroleum refining industry stipulate that the oil concentra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/10D01F11/06C02F1/40
CPCD01F6/46D01F1/10D01F11/06C02F1/40
Inventor 杨丽王玉杰焦旭阳
Owner CHINA PETROLEUM & CHEM CORP
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