Method and system for separating polycyclic aromatic hydrocarbon from eutectic solvent
A technology for deep eutectic solvents and polycyclic aromatic hydrocarbons, applied in separation methods, solvent extraction, chemical instruments and methods, etc., can solve problems such as high energy consumption, tediousness, and corrosiveness
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Embodiment 1
[0042] The raw material is catalytic diesel from a refinery. Analysis results The mass composition of the stream is 8% for non-aromatics, 18% for single-ring aromatics, and 74% for polycyclic aromatics.
[0043] Weigh 193.4 grams of hydrogen bond acceptor tetrabutylammonium bromide, weigh 63.1 grams of hydrogen bond donor diethanolamine, the molar ratio of hydrogen bond acceptor and hydrogen bond donor is 1 / 1, and mix and stir at 60°C , after becoming a uniform and clear solution, it was cooled to room temperature to obtain a deep eutectic solvent.
[0044] use as figure 1 system, the deep eutectic solvent is pumped into the carbon dioxide dissolving unit 3, and the carbon dioxide gas is introduced into the carbon dioxide dissolving unit 3 through the pipeline 11 by the booster, and the pressure of the carbon dioxide above the deep eutectic solvent is kept at 3.0MPa. The sampling port was closed to sample the deep eutectic solvent (C-DES) in which carbon dioxide was dissolve...
Embodiment 2
[0046] Adopt the same system as in Example 1, and use the raw material oil with the same composition as in Example 1.
[0047] Weigh 257.9 grams of hydrogen bond acceptor tetrabutylammonium bromide, weigh 252.3 grams of hydrogen bond donor diethanolamine, the molar ratio of hydrogen bond acceptor and hydrogen bond donor is 1 / 3, and mix and stir at 60°C , after becoming a uniform and clear solution, it was cooled to room temperature to obtain a deep eutectic solvent.
[0048] The deep eutectic solvent is pumped into the carbon dioxide dissolving unit 3, and the carbon dioxide gas is introduced into the carbon dioxide dissolving unit 3 through the pipeline 11 by the booster, keeping the pressure of the carbon dioxide above the deep eutectic solvent at 3.0 MPa, and passing through the sampling port The deep eutectic solvent (C-DES) in which carbon dioxide is dissolved is airtightly sampled, and the mass of dissolved carbon dioxide obtained by analysis after pressure relief is 27 ...
Embodiment 3
[0050] Adopt the same system as in Example 1, and use the raw material oil with the same composition as in Example 1.
[0051] Weigh 178.6 grams of hydrogen bond acceptor methyltriphenylphosphonium, weigh 373 grams of hydrogen bond donor triethanolamine, the molar ratio of hydrogen bond acceptor and hydrogen bond donor is 1 / 5, mix and stir at 50°C , after becoming a uniform and clear solution, it was cooled to room temperature to obtain a deep eutectic solvent.
[0052] The deep eutectic solvent is pumped into the carbon dioxide dissolving unit 3, and the carbon dioxide gas is introduced into the carbon dioxide dissolving unit 3 through the pipeline 11 by the booster, keeping the pressure of the carbon dioxide above the deep eutectic solvent at 3.0 MPa, and passing through the sampling port The deep eutectic solvent (C-DES) in which carbon dioxide is dissolved is airtightly sampled, and the mass of dissolved carbon dioxide obtained by analysis after pressure relief is 27 grams...
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Abstract
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