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

Method for preparing high-grade wax by Fischer-Tropsch synthesis crude wax

A high-grade, crude wax technology, applied in petroleum wax refining, petrochemical modification and other directions, can solve the problems of low quality and color quality, affecting the stability of the output paraffin wax, and difficulty in industrial scale up, to reduce the difficulty of operation and Cost, not easy to oxidize and discolor, improve quality and yield effect

Active Publication Date: 2017-04-05
YASHENTECH CORP
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wax has not undergone hydrogenation saturation treatment, and the olefins in the Fischer-Tropsch crude product are not saturated, which will inevitably affect the stability of the output paraffin
At the same time, the final stage is subjected to ordinary distillation under a very high vacuum at 1 Pa. The wax is easy to decompose and change color, and it is difficult to industrialize the scale-up. The quality and color quality of the produced wax are not high.

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
  • Method for preparing high-grade wax by Fischer-Tropsch synthesis crude wax
  • Method for preparing high-grade wax by Fischer-Tropsch synthesis crude wax
  • Method for preparing high-grade wax by Fischer-Tropsch synthesis crude wax

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0025] The first embodiment of the present invention relates to a method for producing high-grade wax from Fischer-Tropsch crude wax. Its process is as figure 1 As shown, the details are as follows:

[0026] Hydrogenation and saturation step: the Fischer-Tropsch synthetic wax from the Fischer-Tropsch unit enters the crude ...

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

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of production of high melting-point wax, and discloses a method for producing high-grade wax by Fischer-Tropsch synthesis crude wax. The method comprises the following steps: A) a hydrogenation saturation step: performing hydrogenation saturation on a raw material; B) primary separation: placing the saturated raw material in the step A) in a primary rectification unit, rectifying the raw material under certain pressure and temperature effects to obtain a light component, soft wax and crude hard wax; C) secondary separation: placing the crude hard wax obtained in the step B) in a secondary distillation unit, evaporating the material under certain pressure and temperature to obtain a first gas phase and a liquid phase; and D) third separation: placing the liquid phase in a third distillation unit, evaporating the material under certain pressure and temperature to obtain a second gas phase and superhard wax; wherein the primary rectification unit is a vacuum rectifying tower. The method can reduce the hardware cost of the employed distillation units in the separation process and increases the economic performance of a Fischer-Tropsch device.

Description

technical field [0001] The present invention relates to the production of high-melting point wax, in particular to a method for producing high-grade wax from Fischer-Tropsch crude wax. Background technique [0002] Most of the waxes on the market today are made of natural paraffin-based crude oil. It is obtained by atmospheric and vacuum distillation, followed by dewaxing, deoiling and refining of the corresponding fraction of heavy crude oil. As the reserves of paraffin-based crude oil in the world become less and less, the production of paraffin is limited. At the same time, for paraffin wax derived from petroleum, its carbon chain length is not enough, and the content of various isomers and aromatics in the raw material is high, so it is difficult to produce high-quality paraffin wax, especially paraffin wax products with high melting point (melting point > 90 ° C) However, these products are widely used in hot-melt adhesives, plastics, inks and other industries, res...

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): C10G73/38C10G73/42
Inventor 韩晖王讯文毛华平袁伟王尤崎
Owner YASHENTECH CORP
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