High-temperature-resistant oil shale powder slag cold-pressing ball and preparation method thereof
A technology of oil shale powder and cold-pressed balls, which is applied in the petroleum industry, special forms of carbonization, coking ovens, etc., can solve problems such as lack of competitiveness, excessive environmental pollution, and large heat loss, so as to improve work efficiency and prolong cleaning. Furnace cycle, pollution reduction effect
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Embodiment 1
[0020] Oil shale powder residue R 1 The moisture content is 6.5% and the oil content is 4.4%.
[0021] Get 100 parts by weight of oil shale slag R 1 , crush the oil shale slag to a particle size of less than 5mm to obtain oil shale coarse powder; use cement as a binder, add 5% of the total weight of cement and 5% of the total weight of coal slime to the oil shale coarse powder In the process, 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 180 kg / cm 2 The oil shale powder and slag cold-pressed balls; the oil shale powder and slag cold-pressed balls are put into the retort furnace for carbonization. The retort temperature is 500°C, and the oil is extracted. The oil yield is 4.2%, and the furnace cleaning cycle is 25 days.
Embodiment 2
[0026] Oil shale powder residue R 2 The moisture content is 6.0% and the oil content is 4.3%.
[0027] Get 150 parts by weight of oil shale slag R 2 , pulverize oil shale slag with particle size less than 8mm to particle size less than 5mm to obtain oil shale coarse powder; add self-made binder accounting for 2% of total weight and coal slime accounting for 10% of total weight into oil shale coarse powder Among them, the self-made binder is made of boronite with a mass percentage of 20-40%, 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 30 mm and a strength of 140 kg / cm 2 The oil shale powder and slag cold-pressed balls; put the oil shale powder and slag cold-pressed balls into the retort furnace for carbonization. The retort temperature is 500°C to refine oil. The oil yield is 4.3%, and the furnace cleaning period is 28 days.
Embodiment 3
[0032] Oil shale powder residue R 3 The moisture content is 6.5% and the oil content is 3.7%.
[0033] Get 120 parts by weight of oil shale slag R 3 , pulverize the oil shale powder slag with particle size less than 8mm to particle size less than 5mm to obtain oil shale coarse powder; use cement as binder, add 3% cement and 7% coal slime to oil In the shale coarse powder, stir evenly with a mixer to obtain a mixture; cold press the mixture into a ball with a diameter of 50mm and a strength of 100kg / cm 2 The oil shale powder and slag cold-pressed balls; put the oil shale powder and slag cold-pressed balls into the retort furnace for carbonization. The retort temperature is 500°C to refine oil. The oil yield is 3.7%, and the furnace cleaning cycle is 29 days.
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