Method for preparing petroleum sulfonate oil displacement agent

Abstract

The invention relates to a method for preparing a petroleum sulfonate oil displacement agent. Benzol-ketone dewaxing oil and furfural extract oil are mixed in a weight ratio of 1:0.01-1:0.5, and the mixture enters a film or tank reactor for sulfonation reaction; a sulfonating agent is SO3 gas, the concentration is diluted to between 1.5 and 3.0 percent in a volume ratio by dry air or inert gas of which the dew point is lower than 60 DEG C, the temperature of the sulfonation reaction is between 30 and 85DEG C, the acid value of sulfonatedbodies is controlled to between 30 and 90mgNaOH / g, and the sulfonatedbodies are neutralized by NaOH or KOH solution; and the raw materials have the advantages of high content of arene capable of being sulfonated and no coking phenomenon in the reaction process; after neutralization, and the sulfonatedbodies do not need extraction separation; the active matter content reaches 25 to 40 percent; a weak alkali / surfactant / polymer system configured by adopting Na2CO3 or a non-alkali binary system configured by salts such as NaCL and the like has the interfacial tension less than 10<-3>mN / m.

Description

technical field [0001] The invention relates to a kind of sulfonated and neutralized oil by adjusting the ratio of ketonebenzene dewaxed oil and furfural extracted oil in the reverse sequence production process of lubricating oil, controlling the molecular weight and carbon number distribution of mixed raw materials within a certain range The preparation method of sulfonate oil displacement agent. Background technique [0002] Use SO 3 As a sulfonating agent, there have been some reports on the preparation technology of producing petroleum sulfonate from petroleum distillate oil. In order to avoid coking and acid slag during the sulfonation process, the second or third line base oil with low aromatics content is generally used as the raw material for sulfonation. Most of this raw material composition is saturated hydrocarbons that cannot be sulfonated. The content of oxidized aromatic components is below 20%. The active substance content of surfactant products used in oil...

AI Technical Summary

Problems solved by technology

This process uses 2 to 8 reactors connected in series, which increases the equipment investment; this preparation method uses low temperature liquid-liquid sulfonation (liquid distillate oil and liquid sulfur trioxide) at -15°C to 15°C, and the reaction must be maintained at low temperature It is necessary to add a refrigerator cooling system; to improve the fluidity of raw materials in the reactor and pipelines at low temperatures, and to slow down the flow of liquid SO 3 After entering the reactor, the intensity of the reaction should be at the level of liquid SO 3 Adding halogenated hydrocarbon diluents in the production process involves the recycling of diluents, which increases energy consumption and production costs

Images