A method for synthesizing petroleum sulfonate in a microreactor

A technology of petroleum sulfonate and microreactor, which is used in the preparation of sulfonate, chemical instruments and methods, chemical industry and other directions, can solve the problems of short residence time, long residence time, and many side reactions, and achieves less consumption. Effect

Active Publication Date: 2011-12-28
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for effective use of crude oils by producing high-quality products that have lower surface energy values compared to existing methods such as solvent extraction or chemical reactions. It also saves on expensive materials like naphtha during production processes while maintaining their effectiveness at extracting targeted compounds from crude oil mixtures.

Problems solved by technology

This patented technical solution describes different methods for producing stable chemical compounds called alpha -suflic acid derivatives from paraffins through various processes like reactors. These techniques aim to improve efficiency and reduce costs associated with conventional methods while also improving their applicability across diverse applications including oil drilling operations.

Method used

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  • A method for synthesizing petroleum sulfonate in a microreactor
  • A method for synthesizing petroleum sulfonate in a microreactor

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Experimental program
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Effect test

Embodiment 1

[0029] Dalian Institute of Chemical Physics Microreactor: The characteristic size of the micro-mixing and micro-heat exchange channels is 420 μm, the volume of the mixing channel is 240 μl, and the volume of the heat exchange channel is 480 μl (2 pieces)

[0030] Heat exchange medium: tap water, 650ml / min (reactor 1), 430ml / min (heat exchanger 3)

[0031] Sulfonating agent: liquid phase SO 3 + Dichloroethane, SO 3 %(mass)=28.6%, density 1.36g / ml

[0032] Raw material oil: 180~550℃ distillate oil (diesel oil + wax oil) + dichloroethane, mass ratio (1:3): 4, density 1.07g / ml

[0033] Sulfonating agent flow rate: 18.4g / min

[0034] Raw oil flow rate: 38.8g / min

[0035] SO 3 Mass ratio to distillate oil: 0.27

[0036] The temperature of the petroleum sulfonic acid stream at the outlet of the sulfonation reactor: 58°C

[0037] Neutralizing liquid active substance content: 18.2%

[0038] Active matter content after dehydration and solvent removal: 49.1%

[0039] Interfacial...

Embodiment 2

[0041] Dalian Institute of Chemical Physics Microreactor: The characteristic size of the micro-mixing and micro-heat exchange channels is 420 μm, the volume of the mixing channel is 240 μl, and the volume of the heat exchange channel is 480 μl (2 pieces)

[0042] Heat exchange medium: tap water, 590ml / min (reactor 1), 550ml / min (heat exchanger 3)

[0043] Sulfonating agent: liquid phase SO 3 + Dichloroethane, SO 3 %(mass)=28.6%, density 1.36g / ml

[0044] Raw material oil: 180~550℃ distillate oil (diesel oil + wax oil) + dichloroethane, mass ratio (1:3): 4, density 1.07g / ml

[0045] Sulfonating agent flow rate: 3.4g / min

[0046] Raw oil flow rate: 9.4g / min

[0047] SO 3 Mass ratio to distillate oil: 0.20

[0048] The temperature of the petroleum sulfonic acid stream at the outlet of the sulfonation reactor: 35~42°C

[0049] Neutralizing liquid active substance content: 15.5%

[0050] Active substance content after dehydration and solvent removal: 43.4%

[0051] Interfa...

Embodiment 3

[0053] Dalian Institute of Chemical Physics Microreactor: The characteristic size of the micro-mixing and micro-heat exchange channels is 420 μm, the volume of the mixing channel is 240 μl, and the volume of the heat exchange channel is 480 μl (2 pieces)

[0054] Heat exchange medium: tap water, 670ml / min (reactor 1), 270ml / min (heat exchanger 3)

[0055] Sulfonating agent: liquid phase SO 3 + Dichloroethane, SO 3 %(mass)=28.6%, density 1.36g / ml

[0056] Raw material oil: 180~550℃ distillate oil (diesel oil + wax oil) + dichloroethane, mass ratio (1:3): 4, density 1.07g / ml

[0057] Sulfonating agent flow rate: 16.1g / min

[0058] Raw oil flow rate: 33.9g / min

[0059] SO 3 Mass ratio to distillate oil: 0.27

[0060] The temperature of the petroleum sulfonic acid stream at the outlet of the sulfonation reactor: 56°C

[0061] Active substance content in neutralizing solution: 18.2%, the ratio of monosulfonate to bisulphonate in the active substance is ~1.18

[0062] After ...

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Abstract

The invention discloses a method for synthesizing petroleum sulfonate in micro reactors. The method is mainly characterized in that: a) wide petroleum fraction serving as a raw material and liquid SO3 serving as a sulfonating agent undergo continuous sulfonation reaction in a first micro reactor in the presence of a solvent to generate petroleum sulfonic acid; b) the petroleum sulfonic acid is directly neutralized by using aqueous ammonia to generate the petroleum sulfonate without an ageing process, wherein the neutralization reaction is performed in a subsequent second micro reactor; and c) a micro mixing channel and a micro heat exchange channel are integrated in each micro reactor, and the temperatures of the sulfonation reaction and the neutralization reaction are adopted by adopting cooling media. By using efficient heat transfer and mass transfer properties of the micro channels, the wide petroleum fraction and the liquid SO3 are synthesized into the petroleum sulfonate by sulfonating; the petroleum sulfonate has high active substance content and low interfacial tension; safe, efficient and clean production equipment and a production process capable of realizing strengthened processes are adopted in the method; and the method is suitable for large-scale continuous industrial production of a petroleum sulfonate surfactant for tertiary oil recovery.

Description

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Claims

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Application Information

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Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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