Preparation method of oily sludge based adsorption carbon material for oily sewage treatment

A technology for sewage treatment and carbon adsorption, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of high equipment strength requirements, small equipment strength requirements, and the amount of pore-enlarging agent. Large and other problems, achieve the effect of reducing preparation cost, low price, and good degreasing performance

Inactive Publication Date: 2019-08-02
XI'AN PETROLEUM UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carbon materials rich in micropores have certain limitations in the actual application process, and it is difficult to remove pollutants with large molecules. The removal rate
The method currently used to increase the porosity of carbon materials is mainly to expand the pores of the existing activated carbon under the condition of high pressure, high temperature and gas, which belongs to the category of physical pore expansion, and its main advantage is that it can make the micropores of activated carbon further Expansion, the passage of gas can unclog the blocked pores, but the energy consumption is large in the process of hole expansion, and the requirements for equipment strength are relatively high
Compared with physical reaming, chemical reaming requires lower temperature and requires less equipment strength, which can greatly reduce the energy consumption of the reaming process, but the amount of reaming agent is relatively large

Method used

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  • Preparation method of oily sludge based adsorption carbon material for oily sewage treatment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Dry the reduced oily sludge with a water content of 62.2% and an oil content of 8% produced in the process of oil exploitation and refining to a water content of 9% and an oil content of 7.2%, to obtain dry sludge Mud: Grind the dry sludge, almond shell and cotton seeds to a particle size of 20-40 mesh, then mix 5.0g of dry sludge particles, 3.5g of almond shell particles, and 1.5g of cotton seed particles evenly, A raw material mixture is obtained.

[0024] 2. Mix the raw material mixture obtained in step 1 with 4 g of ethanolamine, and heat-treat at 80° C. for 4 hours.

[0025] 3. According to the material-to-liquid ratio of 1g:1.5mL, the heat-treated product obtained in step 2 was added to the industrial waste alkali solution, and soaked at room temperature for 24 hours. The total mass concentration of sodium hydroxide and sodium carbonate in the industrial waste alkali solution used was 30%; After impregnation, it was dried at 105°C to constant weight to obtain ...

Embodiment 2

[0033] 1. Dry the oily sludge with a water content of 64.1% and an oil content of 6.7% after reduction treatment produced in the process of oil exploitation and refining to a water content of 8% and an oil content of 6.1% to obtain dry sludge Sludge: Grind the dry sludge, almond shells, and grape seeds to a particle size of 20-40 meshes, then mix 6.0g of dry sludge particles, 3.0g of almond shell particles, and 1.0g of cotton seed particles evenly, A raw material mixture is obtained.

[0034] 2. Mix the raw material mixture obtained in step 1 with 3 g of ethanolamine, and heat-treat at 100° C. for 3 hours.

[0035] 3. According to the material-liquid ratio of 1g:2.5mL, the heat-treated product obtained in step 2 was added to the industrial waste alkali solution, and soaked at room temperature for 24 hours. The total mass concentration of sodium hydroxide and sodium carbonate in the industrial waste alkali solution used was 35%; After impregnation, it was dried at 105°C to con...

Embodiment 3

[0039] 1. Dry the oily sludge with a water content of 61.5% and an oil content of 9.8% after reduction treatment produced in the process of oil exploitation and refining to a water content of 7.5% and an oil content of 8.9%, to obtain dry sludge Sludge: Grind dry sludge, pistachio shells, cotton seeds, and watermelon seeds to a particle size of 20-40 meshes, and then mix 5.0g of dry sludge granules, 3.5g of pistachio shell granules, 0.75g of cotton seed granules and 0.75 g Watermelon seed granules are mixed well to obtain a raw material mixture.

[0040] 2. Mix the raw material mixture obtained in step 1 with 3 g of ethanolamine, and heat-treat at 120° C. for 5 hours.

[0041] 3. According to the material-liquid ratio of 1g:2mL, add the heat-treated product obtained in step 2 into the industrial waste alkali solution, and soak for 24 hours at room temperature. The total mass concentration of sodium hydroxide and sodium carbonate in the industrial waste alkali solution used is ...

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Abstract

The invention discloses a preparation method of an oily sludge based adsorption carbon material for oily sewage treatment. Oily sludge produced in the petroleum exploitation and refining process and subjected to reduction treatment is taken as a raw material and mixed with fruit shells and fruit seeds, the carbon content of the oily sludge and the porosity of a carbonization product are increased,ethanol amine is taken as a chemical pore-enlarging agent, industrial alkali waste is taken as an activator, and the oily sludge based adsorption carbon material is prepared in combination with chemical pore enlargement and activation methods. The reaction temperature is lower, the process is simple, the preparation cost is reduced, the obtained carbon material has a higher mesopore proportion, is applicable to adsorption of petroleum substances in the oily sewage, can effectively remove suspension oil and emulsification oil in the oily sewage, spot utilization of the oily sludge based adsorption carbon material is realized, and stable, harmless and recycling treatment of the oily sludge is realized.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a preparation method of an oily sludge-based adsorption carbon material used for oily sewage treatment. Background technique [0002] Oily sludge is the main waste produced by petroleum and petrochemical enterprises. Because it contains a large amount of petroleum hydrocarbons, heavy metals, pathogenic bacteria, etc., it has become one of the hot spots of pollution control in petroleum and petrochemical enterprises. Common treatment and disposal methods for oily sludge include incineration, pyrolysis, and biological treatment. However, oily sludge contains a large amount of petroleum hydrocarbons and has a high carbon content, so it is a good raw material for the preparation of activated carbon. However, the preparation of carbon materials from oily sludge will be limited by the region where the oily sludge is produced, the production process, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/33B01J20/20B01J20/30C02F1/28
CPCC01B32/324C01B32/33B01J20/20B01J20/3078C02F1/283B01J2220/4887
Inventor 屈撑囤杜明明鱼涛杨博胡海杰秦林新
Owner XI'AN PETROLEUM UNIVERSITY
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