Residual oil sulfonation method
A residue, sulfonation technology, used in chemical instruments and methods, chemical/physical processes, dissolution, etc.
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Embodiment 1
[0005] Take 80g of residual oil and mix with 320g of dichloroethane, then cool the residual oil to 20°C. SO 3 Dilute it with dichloroethane to a solution with a mass percentage of 25%, take 80g and add 20g dimethyl carbonate, mix well and gradually add it to the above-mentioned cooled residue solution, keep it at 20°C after the addition, continue at 20°C Stir for 0.5h. Then take mass percent as 25% SO 3 Add 240 g of the solution to the above sulfonated residual oil solution gradually. During the addition, keep the reaction temperature at 20°C. After the addition is complete, stir at 30°C for 1 hour, then add 23% ammonia water for neutralization. Settling at ℃, the aqueous solution of the lower layer was separated, and the upper product was evaporated to remove the solvent to obtain the sulfonate product.
Embodiment 2
[0007] Take 80g of residual oil and mix with 320g of dichloroethane, then cool the residual oil to 20°C. SO 3 Dilute with dichloroethane to a solution with a mass percentage of 25%, take 100g and add 20g of dimethyl carbonate, mix well and gradually add to the above-mentioned cooled residue oil solution, keep at 20°C after the addition, continue at 20°C Stir for 0.5h. Then take mass percent as 25% SO 3 Solution 220g, gradually added to the above sulfonated residual oil solution, during the addition process, the reaction temperature was kept at 20°C, after the addition was completed, stirred at 30°C for 1h, then added 23% ammonia water for neutralization, at 70°C Settling at ℃, the aqueous solution of the lower layer was separated, and the upper product was evaporated to remove the solvent to obtain the sulfonate product.
Embodiment 3
[0009] Take 80g of residual oil and mix with 320g of dichloroethane, then cool the residual oil to 20°C. Dilute SO3 with dichloroethane to a solution with a mass percentage of 25%, take 120g and add 20g dimethyl carbonate, mix well and gradually add to the above-mentioned cooled residual oil solution, keep it at 20°C after the addition is complete, continue to cool at 20°C Stirred under conditions for 1h. Then take mass percent as 25% SO 3 Add 200 g of the solution into the above-mentioned sulfonated residual oil solution gradually. During the addition, keep the reaction temperature at 20°C. Settling at ℃, the aqueous solution of the lower layer was separated, and the upper product was evaporated to remove the solvent to obtain the sulfonate product.
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