Method for producing normal paraffin by hydrogenating fatty acid ester

A fatty acid ester and n-alkane technology, applied in the field of catalysis, can solve the problems of difficulty in realizing large-scale production, reduced n-alkane yield, high production labor intensity, etc., and achieves low labor intensity, improved conversion rate, and reaction temperature. low effect

Inactive Publication Date: 2014-12-31
江苏佳誉信实业有限公司
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] To sum up, the literatures and patents reported so far are mainly used to produce diesel components. During the post-treatment process of raw materials while hydrodeoxygenating, hydrocarbon cracking, isomerization and aromatization reactions occur. On the one hand, The hydrocarbon cracking reaction leads to a decrease in the yield of liquid hydrocarbons. On the other hand, hydrocarbon cracking, isomerization and aromatization lead to a dec

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 producing normal paraffin by hydrogenating fatty acid ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Hydrodeoxygenation catalyst preparation

[0037] (1) Pseudo-boehmite and magnesium nitrate are mixed in a certain proportion, and at the same time, the modifying additive is dissolved and added in a certain proportion with deionized water, and the carrier is prepared through processes such as kneading-forming-drying-roasting. (2) The active metal is dissolved by complexation, and then the solution is mixed and loaded on the surface of the carrier by co-impregnation, wherein nickel oxide is 10% to 30%, molybdenum oxide is 2.0% to 12.0%, and cobalt oxide is 1.0%. ~10.0%. . (3) The loaded catalyst is dried-calcined to obtain the finished catalyst.

Embodiment 2

[0039] Supplementary Refining Catalyst Preparation

[0040] (1) Aluminum nitrate and zirconium sulfate metal salt are selected to prepare a solution, and sodium hydroxide is used as a precipitant for neutralization and precipitation, and then filtered, washed, dried, and roasted to obtain a composite carrier of alumina and zirconia (2) adopt 15% metal Ni and 1.5% metal Mo were impregnated by equal-volume co-impregnation, dried at 110°C, and then calcined at 400°C to obtain a finished catalyst.

Embodiment 3

[0042] Fatty acid methyl ester (waste oil transesterification product) hydrodeoxygenation

[0043]The gutter oil is treated by primary screening-fractionation, and then transesterified with methanol to obtain fatty acid methyl esters. After mixing fatty acid methyl esters and hydrogen in a certain proportion, they enter the pre-hydrogenation reactor to remove metals and reduce the iodine value of raw materials, and then enter the hydrogenation reactor. The hydrodeoxygenation reactor converts most fatty acid methyl esters. After the hydrodeoxygenation products are separated by the separation system, the light distillate oil enters the supplementary refining unit for further hydrodeoxygenation treatment, so that the content of non-stable substances such as oxides in the product is less than 0.5ppm . The operating conditions of the controlled hydrodeoxygenation catalyst are: the reaction hydrogen partial pressure is 3.0Mpa, the hydrogen oil volume ratio is 700v / v, the reaction in...

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 method for producing normal paraffin by hydrogenating fatty acid ester, mainly solves the problems of narrow application range, low added values and the like of first generation biodiesel (fatty acid methyl ester), and develops the application range of animal and vegetable oil (fatty glyceride). The method for producing normal paraffin by hydrogenating fatty acid ester comprises the following steps: mixing fatty acid ester with hydrogen, sequentially introducing the obtained mixture to enter a fixed bed prehydrogenation reactor and a hydrodeoxygenation reactor in order to remove most oxygen-containing groups in the above raw material, carrying out gas-liquid separation on crude products, fractioning, and introducing the fractioned product to an additional purifying unit to carry out deep hydrotreatment in order to produce highly pure normal paraffin with the oxygen content of below 0.5ppm. The method adopting the above technical scheme well solves the problems, can be used in the industrial production of normal paraffin through hydrogenating fatty acid ester, and has the advantages of low reaction pressure, low hydrogen/oil ratio, low hydrogen consumption, large apparatus load, high product purity and good product quality.

Description

technical field [0001] The invention relates to a method for hydrogenating fatty acid esters to produce normal alkanes, which belongs to the technical field of catalysis. Background technique [0002] With the increasing tension of non-renewable energy sources such as coal, oil, and natural gas worldwide, the development and utilization of renewable biomass resources has attracted people's attention. Animal and vegetable oils are mainly composed of saturated or unsaturated fatty acid esters. The technology of using solid acid and alkali catalysts to catalyze the transesterification of animal and vegetable oils with methanol or ethanol to prepare biodiesel (first-generation biodiesel) has been extensively studied. , the biodiesel produced is mainly methyl or ethyl esters of long-chain fatty acids. Biodiesel is a renewable and clean energy without sulfur, but compared with mineral diesel, it has high oxygen content, high viscosity, and low combustion calorific value, so it ca...

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
IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 黄岳寅杜林杨军陈孝朱涛黄岳更
Owner 江苏佳誉信实业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap