Separation method of oily sludge and application of sludge impurities to preparation of active carbon

A technology for preparing activated carbon and separation methods, which is applied in water/sludge/sewage treatment, sludge treatment, and pyrolysis sludge treatment, etc. Extraction and other problems, to avoid incomplete water-oil separation, improve the degree of water-oil separation, and promote the effect of rupture

Active Publication Date: 2019-05-17
东营市康杰化工科技发展有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a separation method of oily sludge and the application of sludge impurities in the preparation of activated carbon, so as to solve the problem that the oil sludge contains a large amount of water in the prior art, so that the oil is emulsified and stably exists in the sludge impurities, thereby It is difficult to extract, and the separated sludge impurities are also difficult to be effectively used. At the same time, the separated liquid phase components in conventional methods often have high water content and are difficult to use.

Method used

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  • Separation method of oily sludge and application of sludge impurities to preparation of active carbon

Examples

Experimental program
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Effect test

Embodiment 1

[0039] 1) Microwave the oily sludge for 2 minutes under microwave conditions with a frequency of 2500 MHz and an output power of 150 W; centrifuge the oily sludge after the above microwave treatment at a speed of 2000 r / min, and then place Place it under the condition of -15~-20℃ for 3-8 hours, add demulsifier to it, then place it under the condition of rotating speed of 4500r / min for a second centrifugation, and then remove the liquid phase to obtain the pretreated oily sludge;

[0040]2) Use nitrogen gas with a flow rate of 1L / min to purge the reactor to discharge the air in the reactor to form a nitrogen environment, and place the pretreated oily sludge in the above reactor at a heating rate of 20°C / min. Raise the temperature to 800°C, and then keep it warm for 10 minutes for dry distillation (during the dry distillation process, nitrogen gas is continuously fed at a flow rate of 100mL / min), and the gas phase and impurities after dry distillation are collected respectively, ...

Embodiment 2

[0042] 1) Microwave the oily sludge for 5 minutes under microwave conditions with a frequency of 2500 MHz and an output power of 150 W; centrifuge the oily sludge after the above microwave treatment at a speed of 2200 r / min, and then place it in Place it under the condition of -15~-20℃ for 3-8 hours, add demulsifier to it, then place it under the condition of rotating speed of 5500r / min for a second centrifugation, and then remove the liquid phase to obtain the pretreated oily sludge;

[0043] 2) Use nitrogen with a flow rate of 1L / min to purge the reactor to discharge the air in the reactor to form a nitrogen environment, and place the pretreated oily sludge in the above reactor at a heating rate of 40°C / min Raise the temperature to 900°C, and then keep it warm for 20 minutes to carry out dry distillation (during the dry distillation process, nitrogen gas is continuously fed at a flow rate of 100mL / min), and the gas phase and impurities after dry distillation are collected res...

Embodiment 3

[0045] Separation was carried out as in the separation method shown in Example 1, except that the microwave treatment time was 1 min, and the output power was 80 W, and the impurities in the gas phase and dry distillation were collected respectively, which were recorded as A3.

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Abstract

The invention provides a separation method of oily sludge and application of sludge impurities to preparation of active carbon. The separation method comprises the following steps of (1) pretreating the oily sludge: putting the oily sludge under microwave conditions for microwave treatment; performing demulsification treatment and dewatering on the oily sludge subjected to microwave treatment to obtain pretreated oily sludge; (2) separating the oily sludge: in a nitrogen environment, putting the pretreated oily sludge under heating conditions; performing dry distillation; respectively collecting gas phase and impurities after dry distillation. The application concretely comprises the steps of under the existence condition of activating agents, under the inert gas protection conditions, putting the impurities after the dry distillation under the temperature condition of 280 to 350 DEG C; performing pre-activation for 20 to 30 min; then, performing activation for 1 to 2 h under the temperature condition of 700 to 850 DEG C to obtain the high specific area active carbon. The separation method achieves the effects that the separation effect is good; the separated impurities can be effectively utilized.

Description

technical field [0001] The invention relates to the field of treatment and application of oily sludge, in particular to a method for separating oily sludge and the application of sludge impurities in the preparation of activated carbon. Background technique [0002] A large amount of waste oil sludge will be produced in the process of oil extraction, storage, production and processing. These oil sludges are bulky and difficult to process and utilize due to their high impurity content. Moreover, due to the characteristics of high water content in oil sludge, it is even more difficult to extract oil components, and it is even more difficult to separate impurities. [0003] In the prior art, coking treatment, pyrolysis treatment, solvent extraction and other methods are often used to treat oil sludge, and the most commonly used and relatively low treatment cost is pyrolysis treatment. However, the method of direct treatment by pyrolysis does separate the solid and liquid, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/10C02F11/131C02F11/127C01B32/348C01B32/324C02F103/10
Inventor 不公告发明人
Owner 东营市康杰化工科技发展有限责任公司
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