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Preparation method and application of fiber material

A fiber material and fiber technology, which is applied in the preparation of fiber materials and in the field of equipment for treating oily sewage, can solve the problems of single coalescence form, unsatisfactory coalescence degreasing effect, poor adaptability, etc., and increase surface roughness and surface area , improve mechanical and thermal properties, and prevent stress cracking

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

Coalescing media are in the form of granular, fibrous, ring, corrugated plate and wire mesh. At present, most of the commonly used coalescing packings are plate-type coalescing packings with fixed structure, and the coalescing form is relatively single. Coalescing and degreasing effect, but when the water quality and water properties change, the adaptability is often poor, resulting in unsatisfactory coalescing and degreasing effect

Method used

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  • Preparation method and application of fiber material
  • Preparation method and application of fiber material
  • Preparation method and application of fiber material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-30 and comparative example 1-9

[0072] (1) Take the polypropylene masterbatch and add it to a spinning kettle with a stirring device, mix it with a diluent in proportion, heat to a certain temperature to melt, and stir for a period of time under the condition of nitrogen gas to obtain a spinning solution.

[0073] (2) After the spinning solution is filtered through a filter, it is extruded through a screw extruder.

[0074] (3) Use a metering pump to transport the extruded spinning solution to the spinneret, and then extrude the spinning solution at a constant rate to become primary fibers.

[0075] (4) The as-spun fibers are cooled through a three-stage coagulation bath, and then the coalesced fiber filaments are collected by winding with a traction wheel.

[0076] (5) placing the fiber filaments in an extractant for extraction for a period of time to obtain coalesced fibers.

[0077] (6) The obtained coalescing fibers are first soaked for a period of time with 0.5mol / L HCI solution, then soaked for a peri...

Embodiment 31-64 and comparative example 10-19

[0085] use figure 1 The shown device treats oily wastewater from a refining and chemical enterprise. The wastewater has a pH of 7.0 and an oil content of 1526mg / L.

[0086] (1) The coalescing fibers prepared in Examples 1-30 and Comparative Examples 1-9 are respectively layered and compacted into the bed of the coalescer, and the filling ratio is 1 / 2;

[0087] (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;

[0088] (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.

[0089] After the operation is stable, the data is measured and the oil removal rate is calculated.

[0090] The data of each embodiment and comparative example are shown in Table 2.

[0091] Table 2

[0092]

[0093]

[0094]...

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Abstract

The invention discloses a preparation method of coalescent fibers and the coalescent fibers prepared by the method. The preparation method includes the steps of S1, carrying out melting treatment on amixture containing polypropylene resin and a diluent to obtain spinning solution; S2, carrying out extrusion treatment on the spinning solution; S3, performing spinning treatment on the spinning solution obtained in the step S2 to obtain nascent fibers; S4, cooling the nascent fibers obtained in the step S3 to obtain fiber filaments; and S5, performing extraction treatment on the fiber filamentsobtained in the step S4 to obtain a fiber material. The preparation method of the coalescent fibers is simple and convenient in process and short in production path, and the prepared coalescing fiberis moderate in pore diameter, high in mechanical strength and excellent in separation performance, is applied to treatment of oily sewage and is high in sewage oil removal efficiency. The invention also provides a device for treating oily sewage, and the device has a good application prospect in the field of oily sewage treatment.

Description

technical field [0001] The invention relates to a preparation method of fiber material, the fiber material prepared by the method, and its application in treating oily sewage, and also relates to a device for treating oily sewage, which belongs to the technical field of water treatment. Background technique [0002] As a common pollution, oil pollution is extremely harmful to environmental protection and ecological balance. Oily sewage is produced in a wide range, and oily sewage will be produced in the process of oil exploitation, petroleum refining, petrochemical industry, oil product storage and transportation, etc. The output of oily sewage in my country is extremely high. Oil fields and oil refining industries alone produce more than 3 billion tons of oily sewage every year. Oily sewage is also one of the most difficult industrial wastewaters to treat today. Existing oily sewage treatment technologies such as gravity separation, centrifugation, filtration, Air flotation...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/00D01F11/06C02F1/40
CPCD01F6/46D01F1/00D01F11/06C02F1/40
Inventor 杨丽侯秀华魏昕
Owner CHINA PETROLEUM & CHEM CORP
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