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Method for preparing hydrocarbon liquid products

A technology for liquid products and hydrocarbons, applied in the field of preparing hydrocarbon liquid products, can solve the problems of high content of oxygen-containing substances and high acid value of products, and achieve the effect of high content of aliphatic hydrocarbons, low acid value and low content

Active Publication Date: 2013-10-23
林清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the preparation of fuel oil from animal and vegetable oils through direct cracking or catalytic cracking overcomes the shortcomings of biodiesel to a certain extent, it also has problems such as high acid value of the product and high content of oxygen-containing substances in the product. Therefore, it is necessary to seek other alternatives. A way to reduce the acid value of fuel oil and oxygen-containing substances in the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Example 1: Dissolve 100g of soybean oil in 400g of 95% ethanol, add 21.5g of sodium hydroxide powder after heating to 170°C in a salt bath, stir rapidly, cool at low temperature after the saponification reaction is complete, take out the solid matter and dry it, Grinding gave 109.4 g of sodium soap, a yield of 90%. Sodium hydroxide is added to the reactor at a temperature of 450 ° C. After the sodium hydroxide is completely melted, 53 g of soybean oil soap is added to the reactor by continuous feeding at a feed rate of 3.8 g / min to obtain 24.49 g Liquid product, yield 46.2%. The liquid product was analyzed by GC-MS, and the content of alkane in the liquid product was 25.72%, that of olefin was 51.36%, that of aromatic hydrocarbon was 21.63%, and that of other oxygen-containing compounds was 1.29%.

example 2

[0019] Example 2: Dissolve 100g of rapeseed oil with 350g of absolute ethanol, add 23.5g of sodium hydroxide powder after heating to 160°C in a salt bath, stir rapidly, after the saponification reaction is complete, cool at low temperature, take out the solid matter and dry it, Grinding, product soap quality is 89.5g, and yield rate is 72.5%. Sodium hydroxide is added to the reactor at a temperature of 425 ° C. After the sodium hydroxide is completely melted, 47.5 g of soybean oil soap is added to the reactor by continuous feeding at a feed rate of 1.9 g / min to obtain 20.59 g liquid product, yield 43.3%. The liquid product was analyzed by GC-MS, and the content of alkane in the liquid product was 12.63%, olefin was 68.69%, aromatic hydrocarbon was 12.43%, and other oxygen-containing compounds were 6.25%.

example 3

[0020] Example 3: Dissolve 100g of tallow tree oil with 500g of anhydrous methanol, add 23g of sodium hydroxide powder after heating to 180°C in a salt bath, stir rapidly, and cool at low temperature after the saponification reaction is complete, take out the solid matter and dry it, grind it, and the product The soap quality is 93.5g, and the productive rate is 76%. Sodium hydroxide was added to the reactor at a temperature of 430°C, nitrogen protective gas was introduced, and the carrier gas flow rate was 0.66L / min. After the sodium hydroxide was completely melted, 51.5g of tallow tree oil soap was added by continuous feeding In the reactor, the feed rate was 2.86 g / min, and 24.41 g of liquid product was obtained, with a yield of 43.3%. The liquid product was analyzed by GC-MS, and the content of alkane in the liquid product was 17.27%, olefin was 36.92%, aromatic hydrocarbon was 35.08%, and other oxygen-containing compounds were 10.73%.

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Abstract

The invention relates to a method for preparing hydrocarbon liquid products. The method is characterized by comprising the following steps of: adding an organic solvent in the mass equal to 1.5 times of that of grease into the grease, heating to 120-200 DEG C, adding powder-type solid sodium hydroxide, and fast stirring to carry out saponification; carrying out subcooling on a product, separating out soda soap from the solution; and in a splitting stage, taking molten alkali as a heating and reacting medium, putting alkaline substances into a reactor, introducing shielding gas into the reactor, setting the reaction temperature at 350-600 DEG C, changing the alkaline substances into a molten state, and continuously adding the beforehand prepared soda soap into the reactor to generate a decarboxylic reaction on soap under the action of the molten alkaline, wherein the split products comprise liquid, solid substances and splitting gas. The method has the advantages that the preparation method is simple in operation process, mild in condition, concise in device and strong in controllability, and a prepared liquid product is low in acid value, high in aliphatic hydrocarbon content and low in oxygenated compound content and viscosity.

Description

technical field [0001] The invention relates to the field of preparing hydrocarbon liquids by cracking oil derivatives, in particular to a method for preparing hydrocarbon liquid products. Background technique [0002] In recent years, with the development of society, the consumption of oil has been increasing continuously. However, the reserves of oil in the world are becoming less and less, and other problems caused by the energy crisis are becoming more and more serious. Therefore, developing renewable, green and clean energy, alleviating the bottleneck of oil shortage, and solving the serious pollution caused by traditional energy have become more and more concerned topics. [0003] At present, the methods of using oil to produce liquid fuel mainly include transesterification and pyrolysis. Although the production of biodiesel by transesterification is a relatively complete process, due to the defects of biodiesel itself, such as high oxygen content, the calorific value ...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 于凤文王玮瑾计建炳高龙超李雨臻
Owner 林清
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