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High-temperature demulsification method for waste emulsion

A waste emulsion and emulsion technology, applied in chemical instruments and methods, separation methods, liquid separation, etc., can solve problems such as increasing difficulty in processing, and achieve simple and efficient oil-water separation, high oil yield, and cost-saving effects.

Inactive Publication Date: 2019-04-12
TIANJIN HIPURE MEMBRANE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the addition of chemical agents, it undoubtedly increases the difficulty of subsequent processing

Method used

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  • High-temperature demulsification method for waste emulsion
  • High-temperature demulsification method for waste emulsion
  • High-temperature demulsification method for waste emulsion

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Embodiment Construction

[0032] Unless otherwise defined, technical terms used in the following embodiments have the same meanings as commonly understood by those skilled in the art to which the present invention belongs. The test reagents used in the following examples are conventional biochemical reagents unless otherwise specified; the experimental methods are conventional methods unless otherwise specified.

[0033] The present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0034] A high-temperature demulsification method for waste emulsion, comprising the following steps:

[0035] (1) Take a certain amount of waste emulsion and heat it at a certain temperature for heat preservation or boiling for a certain period of time. After cooling to room temperature, the stratification boundary is obvious, and the oil slick is removed;

[0036] (2) get the middle and lower layer emulsion in step (1) and heat and boil again for a certain period...

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Abstract

The invention provides a high-temperature demulsification method for a waste emulsion. The high-temperature demulsification method for the waste emulsion comprises the following steps of (1) heating acertain amount of the waste emulsion at a certain temperature for heat preservation or boiling for a certain period of time, cooling the waste emulsion to the room temperature, and removing floatingoil, wherein the boundaries of separated layers are obvious after the waste emulsion is cooled to the room temperature; (2) heating and boiling the emulsion at the lower layer in step (1) again for acertain period of time, cooling the emulsion to the room temperature, and removing the floating oil; (3) heating and boiling the emulsion part at the lower layer in step (2) again for a certain periodof time, cooling the emulsion part to the room temperature, and removing floating oil; (4) repeating steps (2) and (3) until the oil yield is obviously reduced, wherein the emulsion part at the lowerlayer is obtained to be heated and boiled again during extraction each time. According to the high-temperature demulsification method for the waste emulsion, a demulsifier does not need to be additionally added, the disposal cost is low, and the separated oil can be recycled.

Description

technical field [0001] The invention belongs to the field of emulsion wastewater treatment, in particular to a high-temperature demulsification method for waste emulsion. Background technique [0002] For oily wastewater, the treatment of emulsion is relatively difficult, because the particle size of the emulsion is small, and the stability is high and difficult to separate, which has always been a difficult problem in the treatment of oily wastewater. The emergence of this serious problem has promoted the rapid development of technologies related to oil-water separation, and if the separation problem of waste emulsion with small oil droplet size and stable system is solved, it will not only be suitable for wastewater treatment related fields but also for those that only require oil phase. Or the industrial field of aqueous phase will bring huge benefits. [0003] The traditional process uses chemical demulsification to break the emulsion to achieve oil-water separation. H...

Claims

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Application Information

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IPC IPC(8): C02F9/10B01D17/09B01D17/032B01D17/04C02F101/32
CPCB01D17/005B01D17/0214B01D17/042C02F1/02C02F1/40C02F2101/325C02F2301/08
Inventor 高友志王洪超杨利娟魏飞刘恩华
Owner TIANJIN HIPURE MEMBRANE TECH CO LTD
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