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A method for green synthesis of petroleum sulfonate for tertiary oil recovery in a high-gravity reactor

A technology of hypergravity reactor and petroleum sulfonate, which is applied in the fields of sulfonate preparation, chemical instruments and methods, drilling composition, etc., can solve the problem of long process flow, long material residence time, wide residence time distribution, etc. problems, to achieve the effect of shortening the process flow, reducing the cycle ratio, and reducing the size of the equipment

Active Publication Date: 2018-12-04
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the following problems in the existing sulfonation technology: long residence time of materials, wide distribution of residence time, frequent side reactions, significant over-sulfonation, difficulty in removing reaction heat, long process flow, uncleanness, etc.

Method used

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  • A method for green synthesis of petroleum sulfonate for tertiary oil recovery in a high-gravity reactor
  • A method for green synthesis of petroleum sulfonate for tertiary oil recovery in a high-gravity reactor

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specific Embodiment approach

[0026] The specific embodiment (what oil is adopted respectively in the embodiment)

[0027] The invention is illustrated by the following non-limiting examples, but the invention is not limited to the following examples.

[0028] The following examples are carried out according to the process of the present invention and corresponding equipment. Sulfonating agent and petroleum distillate, where sulfonating agent refers to a certain concentration of SO 3 Gases, pre-prepared and stored in their respective storage tanks for future use. The starting materials for the sulfonation reaction pass through the gas valves according to the ratio and flow rate of the reaction materials recorded in the present invention, and the liquid pump is transported to the supergravity reactor 3. The reaction time is determined by the space velocity, and the reaction temperature is determined by the temperature of the reactor water jacket cooling medium. and traffic control. The sulfonation reacti...

Embodiment 1

[0031] The distillate oil is stored in the distillate oil storage tank, preheated by an electric heater to a reaction temperature of 20°C, and then pumped to the supergravity reactor by metering, SO 3 SO produced by conversion tower 3 Dilute to 5% with dried air, the airflow of sulfonating agent and distillate oil are both fed from the inner edge of the supergravity reactor rotor packing, and the distillate oil and SO4 are controlled by metering pump 12 and valve 13 3 The molar ratio is 1:1.05, the reaction time is 20min, the reaction temperature is 20°C, the aging time is 30min, and the aging temperature is 30°C. After the aging is completed, it enters the neutralization tank. pH value is 7~8; SO 3 Enter the first supergravity reactor 6 through the liquid remover, absorb with dilute sulfuric acid, and after pickling, SO 3 The removal rate is 45%, and the tail gas enters the second overweight reactor 7, absorbs with ammonia water, and SO 3 The removal rate is 97%.

[0032]...

Embodiment 2

[0034] The distillate oil is stored in the distillate oil storage tank, preheated by an electric heater to a reaction temperature of 30°C, and then pumped to the supergravity reactor by metering, SO 3 SO produced by conversion tower 3 Dilute to 8% with dried air. Both the sulfonating agent airflow and the distillate oil are fed from the inner edge of the supergravity reactor rotor packing, and the distillate oil and SO4 are controlled by metering pump 12 and valve 13. 3 The molar ratio is 1:1.05, the reaction time is 20min, the reaction temperature is 30°C, the aging time is 30min, and the aging temperature is 30°C. After the aging is completed, enter the neutralization tank. The neutralization temperature is consistent with the aging temperature. pH value is 7~8, SO 3 Enter the first supergravity reactor 6 through the liquid remover, absorb with dilute sulfuric acid, and after pickling, SO 3 The removal rate is 43.6%. The tail gas enters the second overweight reactor 7 and ...

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Abstract

The invention a method for green synthesis of tertiary oil recovery petroleum sulfonates in a high gravity reactor and belongs to the field of fine chemicals. The method comprises the steps: using distillate oil as a raw , sulfonating and aging the distillate oil through the high gravity-screw combination reactor to obtain an obtained petroleum sulfonate surfactant, and then neutralizing the obtained petroleum sulfonate surfactant. The method is mainly characterized in that the wide distillate oil is used as the raw material, and gas phase SO3 is used as a sulfonation agent; the petroleum sulfonates obtained after neutralizing with ammonium hydroxide is free of solvent removal process, so that the process is shortened; sulfonation efficiency is high, the content of active matters is high and the interfacial tension is low; and in the method, the production equipment and process which can realize processing strengthening, safety, high efficiency and cleaning are used. The method is suitable for scale and continuous production of the tertiary oil recovery petroleum sulfonates.

Description

technical field [0001] The invention belongs to the field of fine chemical industry, in particular to a gas-phase SO 3 A method for sulfonating petroleum fractions, more specifically relates to a method for preparing petroleum sulfonate for tertiary oil recovery by adopting a high-gravity reactor technology. Background technique [0002] Energy supply is crucial to the economic development of a country. At present, petrochemical energy is still the most widely used energy. The exploitation of oil has been experienced for more than a century, and it has been predicted that the oil will be exhausted after fifty years. For now alone, the improvement of oil extraction technology can effectively extract limited oil. Oil production is divided into three stages of oil recovery, especially the impact of surfactants used in the three stages of oil recovery on oil recovery is very important. The method of chemical flooding is the most efficient way to enhance oil recovery at the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/32C07C309/62C09K8/584
CPCC07C303/32C09K8/584C07C309/62
Inventor 孙宝昌初广文姚远邹海魁张亮亮罗勇陈建峰
Owner BEIJING UNIV OF CHEM TECH
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