A kind of method that utilizes oil shale ash to prepare porous material

An oil shale ash, porous material technology, applied in chemical instruments and methods, catalyst carriers, physical/chemical process catalysts, etc., can solve problems such as resource waste, environmental pollution, etc., achieve simple operation methods, wide application range, raw materials Source-rich effects

Active Publication Date: 2018-11-30
浙江金峨生态建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accumulated oil shale ash has caused serious environmental pollution on the one hand, and serious waste of resources on the other hand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Grind dry oil shale ash with a weight of 5 g and pass it through a 100-mesh sieve, add it to 50 mL of sodium hydroxide solution with a concentration of 1.5 mol / L, heat to 70°C, stir for 6 hours, and then adjust the temperature to 90°C. Continue to stir for 8 hours to form a partially dissolved oil shale ash suspension; place the partially dissolved oil shale ash suspension in an ultrasonic pulverizer with a power of 800W and a frequency of 40KHz, and apply ultrasound for 2 hours to further pulverize and dissolve; Separating the suspended liquid after ultrasonic pulverization and dissolving into solid-liquid, adding 10 g of magnesium-aluminum hydrotalcite dried through a 100-mesh sieve to the separated liquid phase, stirring continuously for 6 hours, aging for 48 hours, and then filtering and separating to obtain the solid phase, the above The solid phase was washed 4 times with distilled water, and then dried at 105°C; the dried product was placed in a muffle furnace, ca...

Embodiment 2

[0026] Grind dry oil shale ash with a weight of 5g and pass it through an 80-mesh sieve, add it to 40mL sodium hydroxide solution with a concentration of 1mol / L, heat to 50°C, stir for 4h, then adjust the temperature to 80°C, continue Stir for 6 hours to form a partially dissolved oil shale ash suspension; place the partially dissolved oil shale ash suspension in an ultrasonic pulverizer with a power of 500W and a frequency of 15KHz, and perform ultrasonication for 1 hour to further pulverize and dissolve; Ultrasonic pulverization of the dissolved suspension was carried out for solid-liquid separation, and 5 g of magnesium aluminum hydrotalcite dried and passed through a 80 mesh sieve was added to the separated liquid phase, and after continuous stirring for 4 hours, it was aged for 24 hours, and then the solid phase was obtained by filtration and separation. The phase was washed three times with distilled water, and then dried at 105°C; the dried product was placed in a muffle...

Embodiment 3

[0029] Grind dry oil shale ash with a weight of 5 g and pass it through a 100-mesh sieve, add it to 30 mL of a sodium hydroxide solution with a concentration of 1.2 mol / L, heat to 60°C, stir for 6 hours, and then adjust the temperature to 90°C. Continue to stir for 7 hours to form a partially dissolved oil shale ash suspension; place the partially dissolved oil shale ash suspension in an ultrasonic pulverizer with a power of 800W and a frequency of 40KHz, and apply ultrasound for 2 hours to further pulverize and dissolve; Separating the suspended liquid after ultrasonic pulverization and dissolving into solid-liquid, adding 8 g of magnesium-aluminum hydrotalcite dried through a 100-mesh sieve to the separated liquid phase, stirring continuously for 6 hours, aging for 24 hours, and then filtering and separating to obtain the solid phase, the above The solid phase was washed 4 times with distilled water, and then dried at 105°C; the dried product was placed in a muffle furnace, c...

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Abstract

The invention discloses a method for preparing a porous material from oil shale ash.The method comprises the steps that the dry oil shale ash is added into a sodium hydroxide solution, heating is performed until the temperature is increased to 50 DEG C-70 DEG C, stirring is performed for 4-6 hours, the temperature is regulated to 80 DEG C-90 DEG C, stirring is continuously performed for 6-8 hours, and oil shale ash turbid liquid is formed; the turbid liquid is put into an ultrasonic grinder to be subjected to the ultrasonic effect for 1-2 hours, a liquid phase is obtained through solid-liquid separation, hydrotalcite is added into the liquid phase, stirring is continuously performed for 4-6 hours, aging is performed for 24-48 hours, and a solid phase is obtained through filtering and separating; the solid phase is washed and dried, calcining is performed for 3-5 hours at the temperature of 300 DEG C-500 DEG C, the solid phase is cooled until the temperature of the liquid phase is lowered to room temperature, and then the porous material is obtained.According to the method, the waste resources are fully utilized, the raw material sources are rich, the operation method is simple and safe, and the prepared material is wide in application range and can serve as a catalyst carrier and an absorbing material.

Description

technical field [0001] The invention relates to the field of preparation of inorganic materials, in particular to a method for preparing porous materials from oil shale ash. Background technique [0002] Oil shale, also known as oil shale, is a solid combustible organic mineral with high ash content. Oil shale, like oil, natural gas and coal, is a combustible organic matter and has important economic value. It is estimated that for every 150,000 tons of oil shale base oil produced, nearly 3 million tons of oil shale ash will be discharged. Oil shale ash contains alumina, silica and rare earth elements. With the continuous development of oil shale, the oil shale industry is facing the huge problem of oil shale ash disposal. Accumulated oil shale ash has caused serious environmental pollution on the one hand, and serious waste of resources on the other hand. Oil shale is associated with a variety of valuable elements such as non-ferrous, rare and rare earth elements, and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/16B01J20/28B01J32/00B01J35/10
CPCB01J20/041B01J20/06B01J20/08B01J20/16B01J20/28054B01J23/10B01J35/10B01J2220/4887
Inventor 蔡鲁祥
Owner 浙江金峨生态建设有限公司
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