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Method for preparing porous carbon through co-pyrolysis of petroleum coke and oily sludge

A sludge co-pyrolysis and petroleum coke technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as difficulty, long process, and large gap, and achieve increased surface activity, high adsorption performance, The effect of developed pores

Active Publication Date: 2014-02-05
宁德中同新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantages are: the process is long and the process is complicated, and it is only suitable for petroleum sludge containing a large amount of organic matter that is difficult to degrade
[0023] At present, due to the early development in foreign countries such as the United States, the environmental requirements are also strict. The oily sludge has already reached the level of industrialized treatment, and has rich management and design experience. In my country, the treatment of oily sludge started relatively late compared with foreign countries. Differs greatly
For petroleum coke, the United States and Japan have developed the use of petroleum coke to prepare a specific surface area of ​​3000m 2 / g of super activated carbon, and has already achieved industrialization. Compared with China, although activated carbon with the same high specific surface area can also be prepared, it is realized under the premise of using the KOH chemical activation method, and it uses a high alkali-carbon ratio. confined to the laboratory
Due to the strong corrosiveness and high cost of KOH, it is very difficult to realize industrialization of this method

Method used

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  • Method for preparing porous carbon through co-pyrolysis of petroleum coke and oily sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The method for preparing porous carbon by co-pyrolysis of petroleum coke and oily sludge uses petroleum coke and oily sludge as raw materials, and comprises the following steps in sequence:

[0059] (1) Pre-dry the oily sludge to remove part of the moisture, so that the moisture content of the oily sludge is less than 10%;

[0060] The sludge pre-drying can be carried out in an oven, the temperature is controlled at 110°C, and the drying time is 24 hours. At this time, most of the water in the oily sludge is converted into water vapor;

[0061] The water content of oily sludge is 47.0%, the oil content is 35.80%, and the solid content is 17.40%, all of which are mass fractions;

[0062] (2), the oily sludge obtained in step 1 is mixed with petroleum coke in a mass ratio of 1:1;

[0063] The petroleum coke used is a black solid product produced by cracking and coking in the coking unit during the petroleum refining process. Its ash content is 0.66%, volatile content is ...

Embodiment 2

[0077] The method for preparing porous carbon by co-pyrolysis of petroleum coke and oily sludge uses petroleum coke and oily sludge as raw materials, and comprises the following steps in sequence:

[0078] (1) Pre-dry the oily sludge to remove part of the moisture, so that the moisture content of the oily sludge is less than 10%;

[0079] The sludge pre-drying can be carried out in an oven, the temperature is controlled at 110°C, and the drying time is 24 hours. At this time, most of the water in the oily sludge is converted into water vapor;

[0080] The water content of oily sludge is 47.0%, the oil content is 35.80%, and the solid content is 17.40%, all of which are mass fractions;

[0081] (2), the oily sludge obtained in step 1 is mixed with petroleum coke in a mass ratio of 1:3;

[0082] The petroleum coke used is a black solid product produced by cracking and coking in the coking unit during the petroleum refining process. Its ash content is 0.66%, volatile content is ...

Embodiment 3

[0096] The method for preparing porous carbon by co-pyrolysis of petroleum coke and oily sludge uses petroleum coke and oily sludge as raw materials, and comprises the following steps in sequence:

[0097] (1) Pre-dry the oily sludge to remove part of the moisture, so that the moisture content of the oily sludge is less than 10%;

[0098] The sludge pre-drying can be carried out in an oven, the temperature is controlled at 110°C, and the drying time is 24 hours. At this time, most of the water in the oily sludge is converted into water vapor;

[0099] The water content of oily sludge is 47.0%, the oil content is 35.80%, and the solid content is 17.40%, all of which are mass fractions;

[0100] (2), the oily sludge obtained in step 1 is mixed with petroleum coke in a mass ratio of 1:1;

[0101] The petroleum coke used is a black solid product produced by cracking and coking in the coking unit during the petroleum refining process. Its ash content is 0.66%, volatile content is ...

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Abstract

The invention belongs to the petrochemical field, and relates to a method for preparing porous carbon through the co-pyrolysis of petroleum coke and oily sludge. The method comprises the following steps: (1) predrying oily sludge; (2) evenly mixing the obtained oily sludge and petroleum coke; (3) smashing, grinding and screening the evenly obtained oily sludge and petroleum coke mixture; (4) steeping the mixture into a composite activator solution, and drying; (5) putting the obtained mixture into a low-temperature reaction furnace for pre-activating; (6) putting the obtained product into a high-temperature reaction furnace for continuing activation, performing furnace cooling to normal temperature; (7) adding the obtained activated product in a hydrochloric acid or sulfuric acid solution for soaking, washing with distilled water to obtain a solid product, and drying the solid product to obtain the porous carbon material. According to the method, not only can the petroleum coke and oily sludge be recycled, but also the porous carbon material with high adsorptivity can be prepared.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a method for preparing porous carbon by co-pyrolysis of petroleum coke and oily sludge, which is used for the recovery and utilization of petroleum coke and oily sludge in petroleum and petrochemical enterprises. Background technique [0002] Oily sludge is an oily solid waste produced during oil extraction, transportation, refining, and oily sewage treatment. It has the characteristics of high water content, large volume, complex composition, difficult treatment, most of the harmful components exceed the discharge standard, and high calorific value. At present, the treatment methods of oily sludge mainly include: [0003] (1) Concentration and drying technology [0004] The concentration methods of oily sludge mainly include gravity, air flotation and centrifugal concentration. The most commonly used method is the gravity concentration method, which uses the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12B01J20/20C01B32/342C01B32/348
Inventor 侯影飞郭宁谷雅雅
Owner 宁德中同新能源科技有限公司
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