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Demulsification treatment method for waste oil agent for acrylic fiber spinning

An acrylic fiber and demulsification technology, which is applied in filtration treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of increased process complexity, short membrane life, difficult regeneration, etc., and achieve high demulsification efficiency and process Easy to control and reduce the cost of degradation and recycling

Active Publication Date: 2016-07-27
中国科学院山西煤炭化学研究所扬州碳纤维工程技术中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patents (201410772005.6, 201310367873.1) disclose a method of using biochemical technology to treat oily agents. Waste oil is incinerated. However, the water content of typical waste oil is about 98%, and the COD is 43500PPm. The cost of sending these waste oil to professional waste treatment stations for non-burning or biodegradation is very high.
Invention patent (94102590.X) discloses a method of ultrafiltration to remove organic substances in oil, the removal rate of organic substances in oil is as high as 90%, but the cost of ultrafiltration membrane to remove oil is high and the membrane life is short , difficult regeneration and other problems; the invention patent (201510369099.7) proposes a method of using low-temperature vacuum distillation to treat waste oil, which also faces the high energy consumption and high cost of water gasification; the invention patent (200510017390.4) announced a A demulsifier demulsifying oil agent method composed of cetyltrimethylammonium bromide, sodium nitrite and disodium edetate, but this product introduces bromide ions and Substances such as sodium nitrate increase the complexity of the subsequent process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Take the polyamide whose number-average molecular weight is 3,000,000 and the degree of hydrolysis is 35, and make a 0.1wt% solution with water;

[0025] (2) Add 200ml of the above-mentioned solution to 100ml of waste oil agent, let stand until the upper layer solution is clear and transparent, obtain 280ml of demulsification solution after filtration, and its COD value is 5000PPm.

[0026] (3) After filtration, the demulsification solution is subjected to adsorption treatment with 0.028g of activated carbon, filtered, and solid-liquid separation, to obtain a COD value of 380PPm and organic matter in the water phase. The water phase meets the emission standard and can be recycled. The organic matter is used as fuel for power generation or heating. .

Embodiment 2

[0028] (1) Take a certain amount of polyamide with a number average molecular weight of 5 million and a degree of hydrolysis of 30, and make a 0.24% solution with water;

[0029] (2) Add 100ml of the above-mentioned solution to 100ml of waste oil agent, let it stand until the upper layer solution is clear and transparent, obtain 160ml of demulsification solution after centrifugation, and its COD value is 4800PPm.

[0030] (3) After centrifugation, the demulsification solution is subjected to adsorption treatment with 0.16g of silica gel, and centrifuged. The COD value of the water phase is 310, which meets the emission standard and can be recycled. The organic matter is used as fuel for power generation or heating.

Embodiment 3

[0032] (1) Take a certain amount of polyamide with a number average molecular weight of 10 million and a degree of hydrolysis of 20, and make a 0.52% solution with water;

[0033] (2) Add 150ml of the above-mentioned solution to 100ml of waste oil agent, let stand until the upper layer solution is clear and transparent, obtain 200ml of demulsification solution after filtration, and its COD value is 4100PPm.

[0034] (3) The filtered demulsification solution is subjected to adsorption treatment with 0.1g of silica gel, centrifuged, and solid-liquid separation to obtain a COD value of 280PPm and organic matter in the water phase. The water phase reaches the discharge standard and can be recycled. The organic matter is used as fuel for power generation or heating.

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Abstract

The invention relates to a demulsification treatment method for a waste oil agent for acrylic fiber spinning.The method comprises the steps that a demulsifying agent and water are prepared into an aqueous solution to be added into a waste oil agent, efficient stirring is conducted, standing is conducted till the mixture is completely flocculated, and filtration is conducted; the filtered aqueous solution is subjected to adsorption treatment through an adsorbing agent, solid-liquid separation is conducted, an aqueous phase of which the COD value is lower than 500 PPm and organic matter is obtained, the aqueous phase meets the discharge standards and can be directly discharged or recycled, and the organic matter serves as fuel for generating electricity or heating.The demulsification treatment method for the waste oil agent for acrylic fiber spinning has the advantages of being low in cost, simple in treatment process and economically feasible.

Description

technical field [0001] The invention relates to a method for demulsification treatment of acrylic fiber spinning waste oil agent. technical background [0002] Carbon fiber is widely used in the fields of aerospace, navigation, automobile, electronics and sports because of its high strength and low density and many other excellent properties. In the process of carbon fiber production, oil agent is the key to reduce the mutual adhesion between acrylic fiber spinning and improve its processing performance. With the continuous production and application of carbon fiber materials, the dosage of waste oil is also increasing, which brings heavy environmental pressure. . Invention patents (201410772005.6, 201310367873.1) disclose a method of using biochemical technology to treat oily agents. Waste oil is incinerated. However, the water content of typical waste oil is about 98%, and the COD is 43500PPm. The cost of sending these waste oil to professional waste treatment stations f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F1/001C02F1/281C02F1/283C02F1/38C02F1/547C02F1/56C02F9/00C02F2101/30C02F2305/04
Inventor 曹国平侯相林邓天昇吕春祥
Owner 中国科学院山西煤炭化学研究所扬州碳纤维工程技术中心
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