Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-temperature demulsifier for crude oil emulsion and production method thereof

A production method and technology of demulsifiers, applied in the field of low-temperature demulsifiers, can solve problems such as poor applicability, poor solubility, poor dispersion performance, and excess, and achieve the effects of enhanced application performance and effect, clear oil-water interface, and good cost performance

Inactive Publication Date: 2011-06-08
江苏三星化工有限公司
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few low-temperature demulsifiers in the market, and the formula adopts specific varieties. Most of them use water and low-molecular alcohols as solvents. They are used for specific crude oil under specific process conditions. They do not have broad spectrum and poor applicability.
Disclosed as CN101100615A is a kind of low-temperature demulsifier and preparation method thereof, adopts methanol and water as solvent, must be dissolved in the crude oil emulsion like this, dispersibility is poor
What CN1011029252A discloses is a kind of dehydration low-temperature demulsifier of crude oil production fluid, also adopts methanol and water as solvent, has also adopted multiple functional demulsifiers as its component, is easy to surpass the cloud point of demulsifier when diluting and using, Affect the normal function of the demulsifier
And when the molecular HLB value of the demulsifier is small; when the relative solubility index of RSN [ml] is low, it will be difficult to dissolve and disperse in the water-methanol polar solvent system, which limits the compound application of many types and varieties of demulsifiers, resulting in broken The application effect of emulsion is poor, especially for heavy crude oil, and it does not have broad spectrum

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-temperature demulsifier for crude oil emulsion and production method thereof
  • Low-temperature demulsifier for crude oil emulsion and production method thereof
  • Low-temperature demulsifier for crude oil emulsion and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0022] Crude oil emulsion low temperature demulsifier composition: polyether type demulsifier (brand: BP2040), 10%; phenolic resin type polyether demulsifier (brand: AR36), 20%; phenolic resin type polyether demulsifier (brand: BASOROL P DB-9945), 20%; dodecylbenzenesulfonic acid, 0.5%; mixed aromatic solvent (brand: S-1000), 48.5%; isopropanol, 1%.

[0023] Heat the demulsifier dry agent to 80°C in a water bath to make it have better fluidity. Add 485 kg of mixed aromatic solvent S-1000 and 10 kg of isopropanol into a reaction kettle with a heat preservation jacket, and add 100 kg of heated functional demulsifier BP2040 in batches at a stirring speed of 120 r / min. Kilogram, 200 kilograms of AR36, 200 kilograms of BASOROL P DB-9945, finally add 5 kilograms of additive dodecylbenzenesulfonic acid, and continue to stir to obtain the final product after 15 minutes.

[0024] The performance index of obtained crude oil emulsion low temperature demulsifier is as follows:

[0025] ...

Embodiment B

[0027] Crude oil emulsion low temperature demulsifier composition: polyether type demulsifier (brand: AP121), 15%; Phenolic resin type polyether demulsifier (brand: BASOROL P DB-9947), 20%; Polyamine polyether demulsifier ( Brand: BASOROL 701), 20%; dodecylbenzenesulfonic acid, 0.55%; mixed aromatic solvent (brand: S-1500), 42.45%; isopropanol, 2%.

[0028] Heat the demulsifier dry agent to 80°C in a water bath to make it have better fluidity. Add 424.5 kg of mixed aromatic solvent S-1500 and 20 kg of isopropanol into a reaction kettle with a heat preservation jacket, and add 150 kg of heated functional demulsifier AP121 in batches at a stirring speed of 120 r / min. Kilogram, 200 kilograms of BASOROL P DB-9947, 200 kilograms of BASOROL701, finally add 5.5 kilograms of additive dodecylbenzenesulfonic acid, and continue to stir to obtain the final product after 15 minutes.

[0029] The performance index of obtained crude oil emulsion low temperature demulsifier is as follows:

...

Embodiment C

[0032] Crude oil emulsion low temperature demulsifier composition: phenolic resin type polyether demulsifier (brand: BASOROL P DB-9935), 15%; PO / EO block polyether demulsifier (brand: BASOROL 150R1), 15%; multifunctional type Polyether demulsifier (brand: BASOROLE9289), 20%; dodecylbenzenesulfonic acid, 0.5%; mixed aromatic solvent (brand: S-1500), 48%; isopropanol, 1.5%.

[0033] Heat the demulsifier dry agent to 80°C in a water bath to make it have better fluidity. Add 480 kg of mixed aromatic solvent S-1500 and 15 kg of isopropanol into a reaction kettle with a heat preservation jacket, and add the heated functional demulsifier BASOROL P DB in batches at a stirring speed of 120 r / min -9935 counts 150 kg, BASOROL 150R1 counts 150 kg, BASOROLP E9289 counts 200 kg, finally adds 5 kg of additive dodecylbenzenesulfonic acid, and continues stirring for 15 minutes to obtain the final product.

[0034] The performance index of obtained crude oil emulsion low temperature demulsifie...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a low-temperature demulsifier for a crude oil emulsion and a production method thereof. The low-temperature demulsifier comprises the following components: 35-65% of functional demulsifier, 1-10% of low-temperature complexing agent, 0.5-5% of additive and 35-65% of organic solvent. The production method of the low-temperature demulsifier comprises the step of compositely preparing with a reaction kettle with a clamp sleeve. The low-temperature demulsifier has wide suitable crude oil types and has better application performance compared with the traditional low-temperature demulsifier.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a low-temperature demulsifier used in the low-temperature demulsification process of crude oil emulsion, which is suitable for use in the low-temperature dehydration of oil field production fluid and the low-temperature pretreatment process of crude oil emulsion in refineries . Background technique [0002] Oilfield production fluid is a kind of crude oil emulsion. Generally, after thermal chemical sedimentation dehydration and electric dehydration treatment, the water content of crude oil is less than 0.5%, which meets the requirements for export. According to the characteristics of different crude oil emulsions, low-temperature demulsifiers are selected to reduce the operating temperature of thermochemical sedimentation and electric dehydration processes, which can save a lot of heat energy consumption. Similarly, crude oil will be mixed with a certa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04
Inventor 刘建春王龙祥
Owner 江苏三星化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com