Method for co-production of white carbon black, aluminum oxide and kerogen by kerosene shale

An oil shale and silica technology, which is applied in the field of co-producing silica, alumina and kerogen with oil shale, can solve the problems of low utilization rate of retorting furnace, low kerogen heat, polluting the environment, etc. Solve the effects of environmental pollution and land occupation, uniform particle distribution and wide source of raw materials

Inactive Publication Date: 2008-01-30
NORTHEASTERN UNIV
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Problems solved by technology

The utilization method of direct burning of oil shale also produces a large amount of oil shale ash due to the low heat of kerogen in oil shale, which pollutes the environment
[0005] Chinese patent CN 1962822 mainly uses oil shale to prepare shale oil and combustible gas through a dry distillation process. The shale oil is used as a product, and the combustible gas is directly used as a fuel for the next step. The shale residue produced by the previous dry distillation process Cement clinker was prepared by calcining, which is in line with the ecological utilization of oil shale from the perspective of comprehensive utilization of oil shale resources, ...

Method used

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  • Method for co-production of white carbon black, aluminum oxide and kerogen by kerosene shale

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Experimental program
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Effect test

Embodiment 1

[0020] Weigh 15 grams of oil shale, particle size ≤ 0.124mm, oil shale contains 48.14% SiO 2 , 15.01% Al 2 o 3 , Fe 2 o 35.86%, kerogen content is 21.6%. Add oil shale and 10.0g NaOH into a 250mL three-necked flask, and continue to add 30.0mL H 2 O, raise the temperature to 100° C., and simultaneously start the electric stirrer for stirring, and continue the reaction for 8 hours. The reaction mixture was filtered to obtain a filtrate and a filter cake. One time, add 1.0g polymer dispersant ethanol to the filtrate. At room temperature, while stirring with a magnetic stirrer, slowly add hydrochloric acid to adjust the aging process of the pH value. When the pH is around 10, a white precipitate begins to appear. stop adding hydrochloric acid, continue aging and stirring for 2 hours, stop stirring, let stand overnight, filter, and the dry product is 7.2g of white carbon black, SiO 2 The content is 93.3%. The filtered liquid is used for the subsequent aging process of prepa...

Embodiment 2

[0023] Weigh 15 grams of oil shale, the particle size is 0.124mm~0.178mm, and the oil shale contains 48.14% SiO 2 For, 15.01% Al 2 o 3 , 5.86% Fe 2 o 3 , the kerogen content is 21.6%. and 10.0g NaOH were added to a 250mL three-necked flask, and 30.0mL H 2 O, raise the temperature to 100° C., and simultaneously start the electric stirrer for stirring, and continue the reaction for 8 hours. The reaction mixture was filtered to obtain a filtrate and a filter cake. Add 1.0g dispersant polyethylene glycol to the filtrate once, and at room temperature, while stirring with a magnetic stirrer, slowly add hydrochloric acid dropwise to adjust the aging process of the pH value. When the pH is around 10, a white precipitate begins to appear. stop adding hydrochloric acid, continue aging and stirring for 2 hours, stop stirring, let stand overnight, filter, wash 2 times with 2 times of water, and the dry product is 6.3g of white carbon black, SiO 2 The content is 94.5%. The filtered...

Embodiment 3

[0026] Weigh 15 grams of oil shale, the particle size is 0.25mm-0.42mm, and the oil shale contains 48.14% SiO 2 , 15.01% Al 2 o 3 , Fe 2 o 3 5.86%, kerogen content is 21.6%. and 10.0g NaOH were added to a 250mL three-necked flask, and continued to 50.0mL H 2 O, raise the temperature to 100° C., and simultaneously start the electric stirrer for stirring, and continue the reaction for 16 hours. The reaction mixture was filtered to obtain a filtrate and a filter cake. Add 1.0mL dispersant polyethylene glycol to the filtrate once, and at room temperature, while stirring with a magnetic stirrer, slowly add sulfuric acid dropwise to adjust the aging process of the pH value. When the pH is around 7.0, a white precipitate begins to appear. Stop adding hydrochloric acid, continue aging and stirring for 2 hours, stop stirring, let stand overnight, filter, and the dry product is 5.5g of white carbon black, SiO 2 The content is 92.4%. The filtered liquid is used for the subsequent...

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Abstract

The invention relates to a method for preparing white carbon black, alumina and kerogen with oil shale, comprising the steps that: (1) the oil shale is crumbled into grains with a diameter less than 0.84 mm or less; (2) the oil shale, NaOH and water are added into a reactor for reaction for 0.5 to 24 hours at 20 DEG C to 200 DEG C, then filtration is made and a first filtrate and a first filter cake are obtained, then inorganic acid is used to adjust the pH value of the first filtrate and dispersant is added, and the white carbon black is obtain after 0.5 to 24 hours of aging; (3) the first filter cake is mixed with inorganic acid, the acid leaching temperature is 20 DEG C to 100 DEG C and the acid leaching time is 0.5 to 24 hours, then a second filter residues and a second filtrate are obtained upon filtration; (4) aqueous slkali is added into the second filtrate to adjust and control the pH value till precipitate Al(OH)3 is produced, then filtration is made and a third residues Al(OH)3 precipitate and a third filtrate are obtained; the Al(OH)3 precipitate can be used for preparing Al2O3 products with different contents by being sintered at 450 DEG C to 1250 DEG C; (5) the third filtrate can be prepared into Fe2(SO4)3 concentrated solution with different density after being concentrated, then the concentrated solution is further processed and Fe2(SO4)3 product is prepared. The invention has simple technique and low energy consumption.

Description

technical field [0001] The present invention relates to a method for extracting white carbon black and alumina from oil shale, and its by-product—kerogen, especially the ecological utilization of oil shale to co-produce white carbon black, alumina, oxide Iron, kerogen method. Background technique [0002] Oil shale, also known as kerogen shale, is a natural, impermeable, fine-grained black or brown sheet of combustible fossil fuel. It is mainly composed of organic matter and inorganic minerals, and the organic matter is called kerogen, also known as kerogen. Inorganic substances are mainly inorganic minerals. Depending on the origin, the inorganic minerals in oil shale vary greatly from country to country. The inorganic minerals in oil shale in the United States, Russia, Estonia and other countries are mainly composed of limestone. The minerals in my country's oil shale are mainly composed of aluminosilicates, the most important component of which is SiO 2 and Al 2 o 3 ...

Claims

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Application Information

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IPC IPC(8): C01B33/113C01F7/02C01G49/14
Inventor 薛向欣李勇冯宗玉
Owner NORTHEASTERN UNIV
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