Method for preparing chemical leakage accident adsorbent from oily sludge

A chemical and adsorbent technology, which is applied in the field of oily sludge to prepare adsorbents for chemical leakage accidents, can solve the problems of environmental pollution and high cost

Inactive Publication Date: 2016-01-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem of high cost and environmental pollu

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Fully mix 150g of crushed oily sludge with 375mL of 2mol / L NaOH aqueous solution, seal and impregnate for 24 hours, then place it in an electric heating box at 110°C for 24 hours, take it out, wash it until pH = 7, and dry it for later use. Grind the dried oily sludge after alkali heat treatment to 40 mesh, take the ground oily sludge and fully mix 8g and 30mL of phosphoric acid solution with a mass solubility of 38%, and dry the fully mixed material at 200°C The air in the box was pre-oxidized for 6 hours and cooled naturally. The pre-oxidized material was heated up to 800°C at a rate of 5°C / min under a nitrogen atmosphere, carbonized and activated at a constant temperature for 2 hours, and taken out after natural cooling. After washing with distilled water at 100°C until pH = 7, a carbon-based adsorption material with developed pore size and high mesoporosity can be produced. The carbon-based adsorption material is used to adsorb aniline in 200ml of aniline solution,...

Embodiment 2

[0020] Fully mix 150g of crushed oily sludge with 375mL of 2mol / L NaOH aqueous solution, seal and impregnate for 24 hours, then place it in an electric heating box at 110°C for 24 hours, take it out, wash it until pH = 7, and dry it for later use. Grind the dried oily sludge after alkali heat treatment to 40 mesh, take the ground oily sludge and fully mix 8g and 30mL of phosphoric acid solution with a mass solubility of 25%, and dry the fully mixed material at 160°C The air in the box was pre-oxidized for 6 hours and cooled naturally. The pre-oxidized material was heated up to 800°C at a rate of 5°C / min under a nitrogen atmosphere, carbonized and activated at a constant temperature for 2 hours, and taken out after natural cooling. After washing with distilled water at 100°C until pH = 7, a carbon-based adsorption material with developed pore size and high mesoporosity can be produced. The carbon-based adsorption material is used to adsorb aniline in 200ml of aniline solution,...

Embodiment 3

[0022] Fully mix 150g of crushed oily sludge with 375mL of 2mol / L NaOH aqueous solution, seal and impregnate for 24 hours, then place it in an electric heating box at 110°C for 24 hours, take it out, wash it until pH = 7, and dry it for later use. Grind the dried oily sludge after alkali heat treatment to 40 mesh, take the ground oily sludge and fully mix 8g and 30mL of phosphoric acid solution with a mass solubility of 25%, and dry the fully mixed material at 160°C The air in the box was pre-oxidized for 6 hours and cooled naturally. The pre-oxidized material was heated up to 900°C at a rate of 5°C / min under a nitrogen atmosphere, carbonized and activated at a constant temperature for 2 hours, and taken out after natural cooling. After washing with distilled water at 100°C until pH = 7, a carbon-based adsorption material with developed pore size and high mesoporosity can be produced. The carbon-based adsorption material is used to adsorb aniline in 200ml of aniline solution,...

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Abstract

The invention relates to a method for preparing a chemical leakage accident adsorbent from oily sludge and mainly solves the problems of higher cost and environment pollution in the prior art. According to the method for preparing the chemical leakage accident adsorbent from the oily sludge, the pulverized oily sludge with the water content lower than 40% is mixed with alkaline liquor and then subjected to sealing impregnation, a mixture is put in a heater case and heated at the constant temperature, the heated mixture is taken out and washed until pH is in a range of 6-8 and then is dried, the dried oily sludge is ground, the ground oily sludge is mixed with a phosphoric acid solution, the mixed solution is placed in a drying box for air pre-oxidation, the oil sludge after pre-oxidation is heated under the nitrogen atmosphere, subjected to carbonization and activation and taken out after cooling, and the chemical leakage accident adsorbent is obtained through washing. With the adoption of the technical scheme, the problems are better solved, and the method can be used for preparing the chemical leakage accident adsorbent.

Description

technical field [0001] The invention relates to a method for preparing an adsorbent for chemical leakage accidents from oily sludge. Background technique [0002] Since the 1960s, there have been many sudden chemical environmental pollution accidents around the world, such as the Rhine River pollution incident in 1986, the Danube River pollution incident in 2000, and the Songhua River pollution incident in 2005. These sudden environmental pollution accidents not only caused huge economic losses, but also brought huge disasters to the environment, human health, society and economic development. Therefore, the emergency treatment technology for sudden chemical environmental pollution accidents has attracted great attention from governments all over the world. In addition to actively carrying out how to prevent and predict the occurrence of sudden environmental disasters, people have also carried out technical research on emergency disposal of leaked chemicals and wastewater, ...

Claims

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Application Information

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IPC IPC(8): C01B31/08C01B32/324C01B32/342
Inventor 张宏哲牟桂琴刘硕郭亚逢张志远唐晓丽
Owner CHINA PETROLEUM & CHEM CORP
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