Process for reducing sulfur content of vacuum residuum
A technology for vacuum residue and sulfur content, which is applied in the treatment of hydrocarbon oil, refined hydrocarbon oil, petroleum industry, etc., and can solve the problem that the sulfur content of heavy oil cannot be reduced, the stability of the adsorbent is not good, and the desulfurization effect of oil products is unknown. and other problems, to achieve the effect of eliminating interphase mass transfer resistance, increasing transfer efficiency, and improving enterprise economic benefits.
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Embodiment 1
[0022] Take by weighing 50g vacuum residue and 50g methanol, take the sulfur element quality in the vacuum residue as a benchmark, weigh the oxidant benzaldehyde with 200% oxygen element content and 5% catalyst cobalt oxide and add them in methanol as extracting solution, respectively Add the vacuum residue and extract to the reaction kettle, raise the temperature and pressurize to 260°C and 8.5MPa under a nitrogen atmosphere, and fully stir to carry out the catalytic oxidation reaction for 3 hours. After the reaction, the reactor was left to stand at room temperature for 1 hour, and the upper extractant was separated to obtain a vacuum residue with low sulfur content; the sulfur content of the residue product was measured using a microcomputer coulometer, and the sulfur content of the product and the reaction The desulfurization rate is shown in Table 3.
Embodiment 2
[0024] Take by weighing 50g of vacuum residue and 50g of methanol, take the sulfur element quality in the vacuum residue as a benchmark, take by weighing oxidant terephthalaldehyde with 300% of oxygen element content and 5% of catalyst manganese oxide and add in methanol as extracting solution, The vacuum residue and the extract were added to the reactor respectively, and the temperature was raised to 270° C. and 8.5 MPa under a nitrogen atmosphere, and the catalytic oxidation reaction was carried out with sufficient stirring for 4 hours. After the reaction, the reactor was left to stand at room temperature for 1 hour, and the upper extractant was separated to obtain a vacuum residue with low sulfur content; the sulfur content of the residue product was measured using a microcomputer coulometer, and the sulfur content of the product and the reaction The desulfurization rate is shown in Table 3.
Embodiment 3
[0026] Take by weighing 50g of vacuum residue and 50g of acetonitrile, take the sulfur element quality in the vacuum residue as a benchmark, weigh the oxidant cumene peroxide and 5% of the catalyst sodium tungstate with an oxygen element content of 400% and add it in acetonitrile as For the extract, add the vacuum residue and the extract respectively into the reactor, raise the temperature and pressurize to 280°C and 5.5MPa under a nitrogen atmosphere, and fully stir to carry out the catalytic oxidation reaction for 5 hours. After the reaction, the reactor was left to stand at room temperature for 1 hour, and the upper extractant was separated to obtain a vacuum residue with low sulfur content; the sulfur content of the residue product was measured using a microcomputer coulometer, and the sulfur content of the product and the reaction The desulfurization rate is shown in Table 3.
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