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Method for preparing zeolite molecular sieve by using oil shale residues

A technology of oil shale waste residue and zeolite molecular sieve, applied in the direction of solid waste removal, crystalline aluminosilicate zeolite, etc., can solve the problems of pollution, land occupation and environment, and achieve the goal of avoiding massive accumulation, reducing environmental pollution and low cost Effect

Active Publication Date: 2010-06-09
FUSHUN MINING IND GROUP
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing zeolite molecular sieve with oil shale waste residue, which can turn oil shale waste residue into treasure, thereby solving the problems of land occupation and environmental pollution, and at the same time better achieve oil shale The purpose of comprehensive utilization

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0016] ① Take 100g of oil shale waste slag that has been ground to below 100 mesh and roasted and activated at 550°C for 2 hours;

[0017] ② To the calcined waste residue, add H with a mass concentration of 30% in a mass ratio of 1:3 2 SO 4 The solution is heated to 90-95 DEG C and reacted for 5 hours, hot filtered to obtain an aluminum-iron solution and a filter residue, the obtained filter residue is washed 1-2 times, and the obtained washing solution is merged into an aluminum-iron solution;

[0018] 3. the primary aluminum-iron solution obtained in step 2. is evaporated to 2 / 6 of the original volume, crystallized by cooling, and filtered to obtain aluminum sulfate crystals and acid-containing aluminum-iron filtrate;

[0019] 4. According to the mass ratio of 1:3, the acid-containing aluminum-iron filtrate obtained in step 3. is mixed with the newly added oil shale waste residue, heated to 90-95 DEG C to react for 3 hours, crystallized by cooling, and filtered to obtain al...

Embodiment 2

[0025] ① Take 200g of oil shale waste slag after grinding to below 100 mesh and roasting and activating at 550℃ for 2 hours;

[0026] ② To the calcined waste residue, add H with a mass concentration of 30% in a mass ratio of 1:3 2 SO 4 The solution is heated to 90-95 DEG C and reacted for 5 hours, hot filtered to obtain an aluminum-iron solution and a filter residue, the obtained filter residue is washed 1-2 times, and the obtained washing solution is merged into an aluminum-iron solution;

[0027] 3. the primary aluminum-iron solution obtained in step 2. is evaporated to 4 / 6 of the original volume, crystallized by cooling, and filtered to obtain aluminum sulfate crystals and acid-containing aluminum-iron filtrate;

[0028] 4. According to the mass ratio of 1:3, the acid-containing aluminum-iron filtrate obtained in the previous step 3. is mixed with the newly added oil shale waste residue, heated to 90-95 ° C for reaction for 3 hours, crystallized by cooling, and filtered to...

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Abstract

The invention discloses a method for preparing a zeolite molecular sieve by using oil shale residues. The method comprises the following steps: separating SiO2 in the oil shale residues to be solid phase by adopting acid dipping, changing Al2O3 into aluminum salt to be dissolved in a liquid phase, adding alkali into the solution to make the solid phase and the liquid phase generate water glass and sodium metaaluminate solution respectively, and finally dehydrating silicon-aluminum gel formed by mixing the water glass and the sodium metaaluminate solution to form transition metacolloid so as to form stable authigenic mineral, namely the zeolite molecular sieve. The method can make full use of the oil shale residues so as to increase the utilization rate, increase the economic benefit, avoid mass accumulation of the residues at the same time of changing waste into valuable, reduce the occupation amount of the land and reduce the environment pollution. The method has the advantages of simple process, less investment and low cost, and is an industrialized method of fine chemical engineering and comprehensive utilization of the oil shale residues with good prospect.

Description

1. Technical field [0001] The invention relates to a method for preparing zeolite molecular sieve from oil shale waste residue. 2. Background technology [0002] my country is rich in oil shale resources, with 12 billion tons of recoverable shale oil resources, mainly distributed in Huadian and Nong'an in Jilin Province, Maoming in Guangdong, and Fushun in Liaoning, ranking fourth in the world. The main ways of utilizing oil shale resources are the extraction of shale oil and direct combustion for power generation. Taking Fushun as an example, nearly 400,000 tons of shale oil is produced every year from oil shale, and 5 million tons of oil shale waste residue is produced every year. At present, there are not many methods for effectively utilizing oil shale waste residue, resulting in a large amount of oil shale waste residue accumulation, which not only occupies a large area of ​​land, but also has a large environmental pollution problem. Therefore, how to better comprehen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/02B09B3/00
Inventor 韩放鲍明福高健姚兴光赵鑫
Owner FUSHUN MINING IND GROUP
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