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Method for preparing petroleum sulfonate oil displacement agent

A technology of petroleum sulfonate and oil displacement agent, which is applied in the field of preparation of petroleum sulfonate oil displacement agent, can solve the problems of increasing equipment investment, increasing energy consumption and production cost, etc., and achieves strong adaptability and product quality control Smooth, good interfacial tension performance

Active Publication Date: 2012-12-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Method for preparing petroleum sulfonate oil displacement agent
  • Method for preparing petroleum sulfonate oil displacement agent
  • Method for preparing petroleum sulfonate oil displacement agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The optimized molecular weight is about 510, and the carbon number distribution is at C 22 ~C 36 The mixed raw materials are heated and stirred evenly, and then poured into a tank reactor for sulfonation reaction. The jacket temperature of the reactor is controlled to be 65-70° C., and 7% SO3 (volume) is passed through to carry out the sulfonation reaction. Stop reaction when acid value reaches 65mgNaOH / g, adopt 35% (weight) NaOH solution to carry out neutralization, control neutralization terminal pH value to be 8-11. The test results of raw materials and products are shown in Table 1 and Table 2.

[0020] Mixed raw material composition analysis Table 1

[0021] name Saturated hydrocarbon% Aromatics % Non-hydrocarbon % Asphaltene% mixed ingredients 55.95 39.25 3.95 0.85

[0022] Interfacial Tension Test Table 2

[0023] Daqing No. 4 Oil Extraction Plant, Xing No. 5 Middle School Combined Station Containing Polymer Sewage Daqing No. 4...

Embodiment 2

[0026] The optimized molecular weight is about 538, and the carbon number is distributed in C 22 ~C 36 The mixed raw materials are heated and stirred evenly, and then enter the membrane reactor for sulfonation reaction. Its reaction temperature is controlled to be 55-60 DEG C, and the SO3 (volume) that feeds gas concentration 4.5% carries out sulfonation reaction, and gas volume is 2.5m3 / h. After the reaction, the acid value of the sulfonic acid is 70 mgNaOH / g, and it is neutralized with a 35% (weight) NaOH solution, and the pH value at the end point of the neutralization is controlled at 8-11. The test results of raw materials and products are shown in Table 3 and Table 4.

[0027] Mixed raw material composition analysis Table 3

[0028] name Saturated hydrocarbon% Aromatics % Non-hydrocarbon % Asphaltene% mixed ingredients 51.52 43.7 4.43 0.35

[0029] Interfacial Tension Test Table 4

[0030] Daqing No. 4 Oil Production Plant Xing No. 5 M...

Embodiment 3

[0033] The product of embodiment 2 is configured into a sodium carbonate weak base ternary system by adopting the crude oil and sewage of the third oil production plant in Daqing, and the detection results are as follows:

[0034] Daqing No. 3 Oil Production Plant North Erxi Combined Station Containing Polymer Wastewater Daqing No. 3 Plant Crude Oil Daqing Refining and Chemical Company Salt-resistant Polymer 1200ppm

[0035]

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/584
Inventor 周云霞杨洪孝宋鸿远常松涛林宏海万影王玉华王玉梅
Owner PETROCHINA CO LTD
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