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Oil pour-point depressant suspension and preparation method thereof

A technology of pour point depressant and suspension, which is applied in the field of preparation and pipeline system, which can solve the problems of increasing the cost of pour point depressant products, difficult customer acceptance, thickening of suspension system, etc., to ensure suspension stability, easy injection, and low viscosity Effect

Inactive Publication Date: 2009-12-16
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of dispersants, suspending materials and thickeners, the cost of the pour point depressant product is increased, which is not easily accepted by many customers. In addition, the thickener added by the invention in order to increase the stability of the product may cause the suspension system to change. thick trend

Method used

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Examples

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Embodiment Construction

[0018] Embodiment. The specific embodiment of the present invention is described with this example and the present invention is described further. Take the generation of 200Kg suspension as an example. Its ingredients are: EVA powder, wetting agent, water, alcohol-based system.

[0019] Wherein: the wetting agent is a non-ionic surfactant with a trade name of Triton; a commercially available certain type of EVA with a density of 0.95 g / ml is used; the alcohol-based system is propanol.

[0020] Its preparation method is:

[0021] Stir 34.5Kg of water, 34.5Kg and 61Kg of propanol in a mixer. After mixing evenly, add 60Kg of EVA powder and stir. After stirring evenly, add 5Kg of Triton. Continue stirring for 10 to 15 minutes before stopping.

[0022] After testing, the suspension formed by the method has an effective concentration of 30%; the apparent viscosity at 20° C. is only 100 mPa·s; the fluidity remains good, and no agglomeration or stratification occurs after six months...

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PUM

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Abstract

The invention relates to an oil pour-point depressant suspension and a preparation method thereof and relates to the technical fields of common chemical methods, preparation and pipeline systems. The oil pour-point depressant suspension comprises the following materials in percentage by total weight: 30-70 percent of hydroalcoholic suspended substances, 0.1-10 percent of wetting agent and 20-70 percent of pour-point depressant polymer powder. The preparation method of the oil pour-point depressant suspension comprises the following steps: firstly, mixing water with one or more alcohols in a stirrer; adjusting the density of the water-alcohol suspension to be equal to the density of the pour-point depressant polymer powder according to a density balance theory; mixing the water alcohols uniformly and adding pour-point depressant powder while stirring; after fully stirring, adding the wetting agent and stirring for 10-15 minutes to form a stable drag reduction suspension. The method is simple to operate, and the formed pour-point depressant suspension with high concentration is easy and simple to inject, has favorable fluidity capable of being kept for at least 6 months and has high solid content, low viscosity, good suspension stability and decreased production cost.

Description

technical field [0001] The invention relates to a low-cost high-concentration pour point depressant suspension for oil product pour point depressing and a preparation method thereof. It concerns the fields of general chemical methods, their preparation and piping technology. Background technique [0002] In recent years, the technology of pour point depressants for oil pipelines has made great progress, the effect of pour point depressants has been greatly improved, and the form of pour point depressant products has also transitioned from the initial granular form to viscous jelly. The suspension and dispersion technology invented in the patent "An oil-soluble high-concentration pour point depressant suspension and its preparation method" (application number 200610090684.4) uses suspending materials and dispersants to disperse and suspend the pour point depressant powder so that it can be directly injected The suspension has the advantages of being easy to use and not needi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00F17D1/17
Inventor 李春漫刘兵徐海红高艳清李国平
Owner PETROCHINA CO LTD
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