Residual oil sulfonation method

A residue, sulfonation technology, used in chemical instruments and methods, chemical/physical processes, dissolution, etc.

Active Publication Date: 2014-05-14
SHANDONG DAMING FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report on the sulfonation of residual oil, and this patent is a self-created technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention relates to a method for sulfonating residual oil to prepare sulphosalts surfactants used by oil fields and provides a residual oil sulfonation method which solves the problems of carbonization and coking in the residual oil sulfonation process. The residual oil sulfonation method is characterized in that residual oil and solvents are diluted in mass ratio of 1:(2-5) and are cooled, sulfonating agents and the solvents are diluted in mass ratio of 1:(1-3), relative residual oil of the diluted solutions is filled into 1 / 2-1 / 20 complexing agents, the complexing agents are filled into the residual oil and subjected to ageing for 0.5-2h, diluted sulfonating agents with mass to be 1-3 times that of the residual oil are gradually added, then alkali is added for neutralization, bottom water solutions are settled and removed, the solvents are removed through distillation, and finally petroleum sulfonate products can be obtained. By adopting the technical scheme, sufficient utilization of residual oil is achieved, the problems of carbonization and coking in the residual oil sulfonation process are solved, requirements for the sulfonating process is low, and residual oil sulfonating can be carried out without changing the liquid-phase sulfonating process condition.

Description

technical field [0001] The invention relates to a method for sulfonating residual oil to prepare a sulfonate surfactant for oil fields, in particular to a method for sulfonating residual oil. Background technique [0002] Petroleum sulfonate is basically an oil field oil displacement agent product produced from crude oil distillates at 260°C to 500°C. For residual oil components above 500°C, due to its high freezing point and high viscosity, it will It is prone to problems such as carbonization and coking, and it is generally difficult to be used as a raw material for the production of petroleum sulfonate. The crude oil in Shengli Oilfield is relatively heavy, and the residual oil content after distillation is as high as 50%. Residual oil is mainly composed of colloids, asphaltenes, polycyclic aromatic hydrocarbons and partially saturated hydrocarbons. It has a large molecular weight and high sulfonation components. After sulfonation, it can still be used in tertiary oil re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/08C09K23/08
Inventor 李元新杨明常高建彬崔继峰王志强刘渝东鲁天晓
Owner SHANDONG DAMING FINE CHEM CO LTD
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