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

Diesel oil pour point depressant and preparation method thereof

A diesel pour point depressant and catalyst technology, applied in the field of pour point depressant, can solve the problems of poor quality of catalytic cracking diesel, inability to achieve pour point depressant effect, inappropriate diesel susceptibility, etc., and achieve good universality, lower freezing point, and easy operation. Effect

Inactive Publication Date: 2013-04-17
SHENZHEN SAN JU TECH CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, some diesel oil can be increased by adding some pour point depressant, but the range of pour point depressant is limited
In addition, the quality of catalytic cracking diesel oil, especially heavy oil catalytic cracking diesel oil, is very poor. It can be used as a blending component of diesel oil after relatively harsh hydrotreating, but it is not a low-condensation point diesel component. Only by converting the "wax" in it can it be used Used as low pour point diesel
[0003] In order to improve the cold flow performance of oil products, this problem can be solved by adding a pour point depressant. However, there are still many problems in the development of pour point depressants. Appropriate, unable to achieve the pour point depressant effect; my country has a vast land and abundant resources, and the chemical components and fractions of diesel oil are different, so the adaptability to the pour point depressant will be different, so it is necessary to solve the problem of broad spectrum and wide application

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
  • Diesel oil pour point depressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of diesel oil pour point depressant, comprising the steps of:

[0023] Step 1, mixing and stirring acrylic acid, higher alcohols and sulfonic acid catalysts to react to obtain acrylate;

[0024] Step 2: Add acrylate to the reaction vessel, raise the temperature in a water bath to T75°C-85°C, then add the initiator, and keep the constant temperature reaction time at T for t9h-11h to obtain the diesel pour point depressant solution;

[0025] Step 3, crystallizing the diesel pour point depressant solution, suction filtering, and vacuum drying to obtain the finished diesel pour point depressant.

[0026] The specific operation steps of step 1 are: add acrylic acid, C8-C18 monohydric alcohol, diesel oil, catalyst and polymerization inhibitor into a three-necked flask with an electric stirrer in sequence, heat up to the reflux temperature of 80°C under stirring, and maintain the reflux reaction for 10h, When the amount of water generated by the separatio...

Embodiment 2

[0036] Same as Example 1, the difference is:

[0037] The mass percent of acrylic acid is 70%, the mass percent of C8~C18 monohydric alcohol is 20%, the mass percent of p-benzenesulfonic acid is 3%, the mass percent of hydroquinone is 1%, the mass percent of azobisisobutyronitrile The percentage is 3%.

Embodiment 3

[0039] Same as Example 1, the difference is:

[0040] The mass percentage of acrylic acid is 80%, the mass percentage of C8~C18 monohydric alcohol is 15%, the mass percentage of p-benzenesulfonic acid is 2%, the mass percentage of hydroquinone is 0.75%, the mass percentage of azobisisobutyronitrile The percentage is 2%.

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 relates to a diesel oil pour point depressant and a preparation method thereof, belonging to the field of petrochemical industry. According to the diesel oil pour point depressant and the preparation method thereof provided by the invention, the diesel oil pour point depressant takes acrylic acid and high-carbon alcohol as raw materials. The preparation method comprises the following steps: in the presence of p-benzenesulfonic acid used as a catalyst, esterifying the raw materials to generate acrylate; and in the presence of azodiisobutyronitrile used as an initiator, polymerizing at a constant temperature of 80 DEG C for 10 hours to obtain the polyacrylate diesel oil pour point depressant. The pour point depression degree of the diesel oil pour point depressant on diesel oil in multiple oil fields can be up to 16-19 DEG C, the cold filter plugging point can be reduced by 6-10 DEG C, and the diesel oil pour point depressant has favorable universality, thereby ensuring that the diesel oil pour point depressant is a good low-temperature fluidity improver for diesel oil.

Description

technical field [0001] The invention relates to a pour point depressant, in particular to a diesel pour point depressant and a preparation method thereof. Background technique [0002] For a long time, the demand for diesel in my country has been very large, and increasing diesel production has always been an important task for my country's oil refining enterprises. However, domestic crude oil is mostly paraffin-based or wax-containing intermediate base, the density is relatively high, the yield of straight-run light fraction is low, and the pour point of the diesel fraction obtained from waxy crude oil is too high. In actual production, some diesel oil can be increased by adding some pour point depressant, but the range of pour point depressant is limited. In addition, the quality of catalytic cracking diesel oil, especially heavy oil catalytic cracking diesel oil, is very poor. It can be used as a blending component of diesel oil after relatively harsh hydrotreating, but ...

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): C10L1/188C10L1/182C10L1/24C10L1/226C10L1/183C10L1/16
Inventor 黄朝辉
Owner SHENZHEN SAN JU TECH CO LTD
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