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Using method for oil shale ash

A technology for oil shale ash and oil products, which is applied in the application field of oil shale ash to achieve the effects of easy control, good separation effect and high decolorization efficiency

Inactive Publication Date: 2010-09-08
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the utilization of oil shale ash mainly includes: production of cement, shale sintered bricks, production of white carbon black, etc., but the technology of using oil shale ash to prepare oil decolorizer has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Crushing the oil shale ash to a particle size of 20-100 mesh, and then adding potassium hydroxide with a weight concentration of 20% to the alkali processor at a mass ratio of 1:2, stirring and boiling at a temperature of 90° C. for 2.5 hours, After the dissolution and boiling, filter, wash the filter residue with distilled water until the pH value is less than 9, dry it, then mix it with solid potassium hydroxide at a mass ratio of 1:3, put it in a muffle furnace and burn it at a temperature of 700°C Activation for 2 hours, after cooling, wash with 3% dilute hydrochloric acid and deionized water until the pH value = 6-7, dry the oil shale ash at 125°C with a water content less than 12% (weight), grind and wash with 200 mesh Sieve and sieve to obtain a decolorizing agent. Weigh 5g of the decolorizer and add it to 100mL of catalytically cracked gasoline, stir and decolorize at a temperature of 50°C for 40min, let it settle for 1.5h and then filter to realize the decolori...

Embodiment 2

[0027] Crush oil shale ash to a particle size of 20-100 mesh, then add 15% sodium hydroxide to the alkali processor at a mass ratio of 1:3, stir and cook at 95°C for 2 hours, After the end, filter, wash the filter residue with distilled water until the pH value is less than 9, dry it, then mix it with solid sodium hydroxide at a mass ratio of 1:2, and put it in a muffle furnace for firing and activation at 650°C for 2 hours After cooling, wash with 5% dilute sulfuric acid and deionized water until the pH value = 6-7, dry the oil shale ash at 120°C with a water content less than 12% (by weight), grind and sieve with a 100-mesh sieve points, the decolorizer is prepared. Weigh 7g of the decolorizing agent and add it to 100mL of coked diesel oil, stir and decolorize at a temperature of 80°C for 40min, let it settle for 1.5h and then filter to realize the decolorization of the oil.

[0028] It is determined that the decolorization rate of coked diesel oil can reach 91% by using th...

Embodiment 3

[0030] Crush the oil shale ash to a particle size of 20-100 mesh, then add potassium carbonate with a weight concentration of 25% to the alkali processor at a mass ratio of 1:5, stir and cook at a temperature of 90°C for 3 hours, and dissolve After the end, filter, wash the filter residue with distilled water until the pH value is less than 9, dry it, then mix it with solid potassium carbonate at a mass ratio of 1:3, put it in a muffle furnace and burn it at a temperature of 750°C for 2 hours. After cooling, wash with 2% dilute sulfuric acid and deionized water until the pH value is 6-7, dry the oil shale ash at 125°C with a water content less than 12% by weight, grind and sieve with a 150-mesh sieve, A decolorizer is prepared. Weigh 6g of the decolorizing agent and add it to 100mL aviation kerosene, stir and decolorize at a temperature of 90°C for 50min, let it settle for 2h and then filter to realize the decolorization of the oil.

[0031] It has been determined that the de...

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Abstract

The invention discloses a using method for oil shale ash, which comprises the following steps: grinding the oil shale ash; adding powder of the oil shale ash and alkali liquor into a caustic treater according to the mass ratio of 1:1 to 1:5; carrying out stirring, dissolving and boiling for 1 to 3 hours at a temperature of between 70 and 95 DEG C; filtering after dissolving and boiling process iscompleted; washing filter residue by using distilled water until the pH value is less than 9; drying the washed filter residue; uniformly mixing the dried washed filter residue with solid alaline matter according to the mass ratio of 1:1 to 1:3; carrying out baking and activating on the mixture for 1 hour at a temperature of between 650 and 750 DEG C; cooling the obtained product; and washing thecooled obtained product by using dilute acid, washing the obtained product by deionized water and carrying out drying, grinding and sieving sequentially to prepare a decolorizer. Compared with the prior art, the invention has the characteristics of simple pretreatment of the oil shale ash and preparation process, easy control, high decolourizing efficiency which can reach over 90 percent, better effect of separating the decolorizer from the oil, and wide raw material source, and also has the characteristics of belonging to the deep processing and utilization of wastes, being beneficial for reducing the preparation cost and being capable of sufficiently and reasonably utilizing the oil shale ash.

Description

technical field [0001] The invention belongs to a method for using oil shale ash, in particular to a method for using oil shale ash to prepare an oil decolorizer. Background technique [0002] Oil shale (also known as oil shale) is a solid combustible organic mineral with high ash content, and low-temperature dry distillation can obtain shale similar to natural oil. Oil shale belongs to unconventional oil and gas resources. Like oil, natural gas and coal, it is a non-renewable fossil energy. It is listed as a very important alternative energy source in the 21st century because of its abundant resources and the feasibility of development and utilization. Oil shale resources are widely distributed in the world. According to incomplete statistics, its reserves are about 10 trillion tons, which is 40% more than coal resources. From 2004 to 2006, my country launched the national oil shale resource evaluation work for the first time. The evaluation results show that my country's...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G25/00B01J20/22
Inventor 许修强周权方红霞徐金明詹益民张辉姚武史建俊李伟伟
Owner HUANGSHAN UNIV
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