A kind of preparation method of diatomite modified expanded graphite

A technology of expanded graphite and diatomite, which is applied in the field of preparation of expanded graphite modification, can solve the problems of difficult addition, recovery and disposal, and achieve the effect of improving performance and realizing adsorption and removal

Inactive Publication Date: 2015-11-18
蓝鲸海洋溢油净化工程秦皇岛有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, diatomaceous earth is usually ultrafine powder, which has the disadvantage of difficulty in dosing and subsequent recovery and disposal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First, the commercial diatomite is screened with a 120-mesh standard inspection sieve, and the sieved diatomite is weighed, and a slurry with a diatomite mass content of 30% is prepared with deionized water. After the cavitation treatment for 30 minutes, after the ultrasonic cavitation treatment, first let the slurry stand for 3 hours, then discard the supernatant, filter it with suction, and wash it with deionized water. After drying at ℃ for 12 hours, grind it into 120-mesh ultrafine particles to obtain purified diatomite; put 700mL of deionized water in a beaker, and at room temperature, first mix 20g of phosphoric acid with a mass concentration of 85% and 10g of N,N-diatomaceous Add methyl acetamide in the beaker filled with deionized water in turn, stir to make phosphoric acid and N,N-dimethylacetamide mix uniformly; then add 25g aluminum hydroxide and 100g purified diatomaceous earth successively; , N,N-dimethylacetamide, aluminum hydroxide and diatomaceous earth ...

Embodiment 2

[0023] First, the commercial diatomite is screened with a 120-mesh standard inspection sieve, and the sieved diatomite is weighed, and a slurry with a diatomite mass content of 35% is prepared with deionized water. After the cavitation treatment for 35 minutes, after the ultrasonic cavitation treatment, let the slurry stand for 4 hours, then discard the supernatant, filter it with suction, wash it with deionized water, and finally put the cleaned diatomaceous earth in an oven at 105 After drying at ℃ for 12 hours, grind it into 120-mesh ultrafine particles to obtain purified diatomite; put 700mL of deionized water in a beaker, and at room temperature, first mix 25g of phosphoric acid with a mass concentration of 85% and 12g of N,N-diatomaceous Add methyl acetamide in the beaker filled with deionized water in turn, stir to make phosphoric acid and N,N-dimethylacetamide mix evenly; then add 28g aluminum hydroxide and 120g purified diatomaceous earth successively; , N,N-dimethyla...

Embodiment 3

[0025] First, the commercial diatomite is screened with a 120-mesh standard inspection sieve, and the sieved diatomite is weighed, and a slurry with a diatomite mass content of 40% is prepared with deionized water. After the cavitation treatment for 40 minutes, after the ultrasonic cavitation treatment, let the slurry stand for 4 hours, then discard the supernatant, filter it with suction, wash it with deionized water, and finally put the cleaned diatomaceous earth in an oven at 105 After drying at ℃ for 12 hours, grind it into 120-mesh ultrafine particles to obtain purified diatomite; put 700mL of deionized water in a beaker, and at room temperature, first mix 28g of phosphoric acid with a mass concentration of 85% and 13g of N,N-diatomaceous Add methyl acetamide in the beaker that contains deionized water successively, stir to make phosphoric acid and N,N-dimethylacetamide mix uniformly; Then add 30g aluminum hydroxide and 135g purified diatomite successively; , N,N-dimethylac...

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Abstract

Provided is a preparation method for diatomite modified exfoliated graphite. Diatomite, aluminum hydroxide, phosphoric acid and N,N-dimethylacetamide after purification are mainly adopted as main reagents, and deionized water is added to the main reagents to prepare modified exfoliated graphite slurry; the modified exfoliated graphite slurry and exfoliated graphite are dried after subjected to ultrasonic impregnation treatment for 30 minutes, sintered at the temperature of 450 DEG C through a high-temperature electric resistance furnace and subjected to heat preservation for one hour, the high-temperature electric resistance furnace is closed and naturally cooled to the indoor temperature, the mixture is dipped, cleaned and dried, and the diatomite modified exfoliated graphite is prepared and is sealed and stored in a plastic bag. The method has the advantages of being easy to operate and low in cost. The diatomite modified exfoliated graphite can effectively achieve adsorption and removal of polar and nonpolar oil pollutants, and the method has a good effect in boosting development of oily water treatment and ocean oil spill pollution disposal work.

Description

technical field [0001] The invention relates to a preparation method of expanded graphite modification. Background technique [0002] With the rapid development of modern industry and crude oil marine transportation, water body oil pollution has become one of the core contents of water environmental pollution control. Excessive discharge of oilfield sewage and leakage of oil tankers and oil pipelines have become the main sources of oil pollution. About 5 to 10 million tons of oil pollutants enter the environmental water body every year, bringing serious ecological disasters to rivers, lakes and oceans. Therefore, actively researching and developing oil pollution control technologies to prevent and control various types of oil pollution and ensure water environment safety has very significant economic, social and environmental benefits, and is a major event that benefits the country, the people, and future generations. [0003] Expanded graphite is a kind of oil pollutant ad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04
Inventor 宋来洲杨菲菲杨育林齐效文贺君李飞
Owner 蓝鲸海洋溢油净化工程秦皇岛有限公司
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