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Oil shale powder slag cold-pressing balls and preparation method thereof

A technology of oil shale powder and cold-pressed balls, which is applied in the petroleum industry, special forms of dry distillation, coke ovens, etc. Effect

Inactive Publication Date: 2010-06-16
张玉山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the existing technology, oil shale with a particle size larger than 8 mm can only be refined through a carbonization furnace, and oil shale powder with a particle size smaller than 8 mm can be used as fuel or discarded.
Therefore, in the process of oil shale mining, transportation, and crushing, 30-50% of the oil shale powder slag with a particle size of less than 8mm will be produced, which can only be used as fuel or discarded because it cannot be refined into the furnace, which improves the mining efficiency. The cost causes environmental pollution, but also a great waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Oil shale powder residue R 1 The moisture content is 6.3%, and the oil content is 4.1%.

[0017] Get 150 parts by weight of oil shale slag R 1 , crush the oil shale powder slag with a particle size of less than 8mm to a particle size of less than 5mm to obtain coarse oil shale powder; use cement as a binder, add cement accounting for 5% of the total weight to the coarse oil shale powder, and stir with a mixer Evenly, the mixture is obtained; the mixture is cold-pressed with a double-roller ball forming machine into a diameter of 30mm and a strength of 180kg / cm 2 The oil shale powder and slag cold-pressed ball; the oil shale powder and slag cold-pressed ball is put into a retort furnace for carbonization, and the retort temperature is 500° C. to refine oil, and the oil yield is 4.2%.

Embodiment 2

[0022] Oil shale powder residue R 2 The moisture content is 5.9% and the oil content is 4.3%.

[0023] Get 100 parts by weight of oil shale slag R 2 , the oil shale powder slag with a particle size of less than 8mm is crushed to a particle size of less than 5mm to obtain oil shale coarse powder; the self-made binder accounting for 3% of the total weight is added to the oil shale coarse powder, wherein the self-made binder is made of The mass percentage is 20-40% bentonite, 20-30% viscose, and the balance of water. Stir evenly with a mixer to obtain a mixture; cold-press the mixture into a ball with a diameter of 60 mm and a strength of 160 kg / cm with a double-roller ball forming machine 2 The oil shale powder and slag cold-pressed ball; the oil shale powder and slag cold-pressed ball is put into a retort furnace for carbonization, and the retort temperature is 500° C. to refine oil, and the oil yield is 4.1%.

Embodiment 3

[0028] Oil shale powder residue R 3 The moisture content is 6.5%, and the oil content is 3.7%.

[0029] Get 120 parts by weight of oil shale slag R 3 , pulverize the oil shale powder slag with a particle size of less than 8mm to a particle size of less than 5mm to obtain oil shale powder; using cement as a binder, add cement accounting for 2% of the total weight to the oil shale powder, and stir with a mixer Evenly, a mixture is obtained; the mixture is cold-pressed into a diameter of 50mm with a double-roller ball forming machine, and the strength is 90kg / cm 2 The oil shale powder and slag cold-pressed ball; the oil shale powder and slag cold-pressed ball is put into a retort furnace for carbonization, and the retort temperature is 500° C. to refine oil, and the oil yield is 3.7%.

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Abstract

The invention provides oil shale powder slag cold-pressing balls which are prepared from oil shale raw ore and adhesive, wherein, the adhesive accounts for 2-5% of the total weight and is selected from cement or self-made adhesive; the self-made adhesive is prepared from the following components in percentage by mass: 20-40% of bentonite, 20-30% of viscose glue and water; and the diameter of the cold-pressing balls is 30-60 mm, and the strength is 50-200 kg / cm2. The oil shale powder slag cold-pressing balls have the advantages that oil shale powder slags which can not enter a furnace is successfully made into oil shale powder slag cold-pressing balls and sent into the furnace for dry distillation and petroleum extraction; and the oil shale powder slag cold-pressing balls have high strength, thus greatly reducing the mining cost, saving resources and reducing pollution on the premise that the oil yield is not reduced.

Description

technical field [0001] The invention relates to a method for refining shale oil, and in particular provides a cold-pressed ball of oil shale powder and slag and a preparation method thereof. Background technique [0002] Oil shale is a kind of mineral resource with abundant reserves but hardly being well utilized. Oil shale can not only extract fuel oil, but also produce synthetic gas and chemical raw materials, and its by-products can also be used to make bricks, cement and other building materials. The shale oil resources contained in oil shale in the world are roughly 366.2 billion tons, which is at least 50% more than the traditional oil resources. my country's oil shale proven + predicted reserves are 483.2 billion tons, containing 29 billion tons of shale oil resources, ranking fourth in the world, second only to the United States, Brazil, and the former Soviet Union. Oil shale is a fine-grained sedimentary rock that is rich in organic matter, has fine bedding, and c...

Claims

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Application Information

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IPC IPC(8): C10B57/06C10B53/06
Inventor 张玉山
Owner 张玉山
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