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Problems solved by technology
[0003] The traditional method of using oil shale is to directly carry out pyrolysis and dry distillation of the mined oil shale without pretreatment. increased the oil content and caused some damage to the reactor
[0004] At present, there are few studies on the pretreatment and upgrading process of oil shale. If the general water washing process will bring subsequent drying and dehydration problems, it will not only waste time, but also increase the cost of treatment. At the same time, due to the shortage of water resources In short, it is even more urgent to propose a coal-measure oil shale upgrading process in anhydrous state
Method used
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Embodiment 1
[0044] Example 1: When the moisture content of the oil shale is greater than 10%, the quality of the oil shale is upgraded without adding media, such as figure 2 Shown.
[0045] It mainly includes the following stages: +13mm sorting stage, 13-6mm sorting stage, 6-3mm sorting stage, -3mm sorting stage, medium recovery cycle stage;
[0046] The +13mm sorting stage includes screening the original 13mm, taking materials above +13mm, and sorting with a compound dry sorting machine to meet product requirements;
[0047] The 13mm-6mm sorting stage includes 6mm screening of materials below 13mm, and materials above 6mm to be sorted by a composite dry sorting machine to meet product requirements;
[0048] The 6-3mm sorting stage includes 3mm sieving the original material below 6mm, taking the material above 3mm and sorting with a vibrating fluidized bed to meet product requirements;
[0049] The -3mm sorting stage includes 3mm sieving the original material below 6mm, taking the materials below ...
Embodiment 2
[0056] Example 2: When the moisture content of the oil shale is less than 10%, the quality of the oil shale is improved by a mediating process, such as image 3 Shown.
[0057] The present invention mainly includes the following stages: +13mm sorting stage, 13-6mm sorting stage, 6-3mm sorting stage, -3mm sorting stage, medium recovery cycle stage;
[0058] The +13mm sorting stage includes screening the original 13mm, taking materials above +13mm, and separating them with a high-density air dense medium fluidized bed to meet product requirements;
[0059] The 13mm-6mm sorting stage includes 6mm screening of materials below 13mm, taking materials above 6mm, and separating them with a high-density air heavy medium fluidized bed machine to meet product requirements;
[0060] The 6-3mm sorting stage includes 3mm screening of the original material below 6mm, taking the material above 3mm, using a vibrating heavy medium fluidized bed to meet product requirements;
[0061] The -3mm sorting stag...
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Abstract
The invention provides a modular high density coal system oil shale quality promoting technology and quality promoting system, and belongs to the oil shale quality promoting technology and quality promoting system. The moisture content of the oil shale acts as the indictor, when the moisture of the oil shale is less than 10%, the technology comprises the steps that +13mm materials are separated by using an air dense medium fluidized bed, 13-6mm materials are separated by using the air dense medium fluidized bed, 6-3mm materials are separated by using a vibration dense medium fluidized bed, -3mm materials are separated by using a vibration fluidized bed, and the media are recycled by using the magnetic separation technology to be used as cycling media; and when the moisture of the oil shale is greater than 10%, the +13mm materials are separated by using a composite dry separator, the 13-6mm materials are separated by using the composite dry separator, the 6-3mm materials are separated by using the vibration fluidized bed, and the -3mm materials are separated by using the vibration fluidized bed. The raw ore of the oil shale is separated into the concentrate ore and the tailing ore by separation of each level of fraction. The technical line of the technology is concise and clear and the technology flow is simple so that efficient separation of the coal system oil shale can be realized, and the quality promoting technology and the quality promoting system have quite important meaning for development and utilization of the coal system oil shale resource of our country.
Description
Technical field [0001] The invention relates to an oil shale upgrading process and upgrading system, in particular to a modularized high-density coal measure oil shale upgrading process and upgrading system. Background technique [0002] With the continuous growth of energy demand and the increasing shortage of conventional energy, conventional energy represented by coal and oil has gradually been unable to meet the needs of production and development. As an unconventional energy source, oil shale has its abundant reserves and unique The physical and chemical properties have attracted widespread attention. Oil shale, also known as kerogen shale, is a fine-grained sedimentary rock rich in organic matter (kerogen). It is schistose with an oil content of 3.5-30% and high ash content (> 40%), the calorific value is generally ≥4.19k J kg -1 , There is no definite molecular formula. The total content of organic matter in oil shale is usually less than 35% of the total mass. It is f...
Claims
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