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Method for preparing hydrocarbon fuel by using microwave-assisted catalytic soap decarboxylation method

A microwave-assisted, hydrocarbon-based fuel technology, applied in the preparation of oxygen-containing compounds, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of complex reaction products, many by-products, lack of selectivity, etc., and achieve high commercial value , the effect of easy purification

Inactive Publication Date: 2011-08-17
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, using traditional heating methods to crack triglycerides, etc., the reaction lacks selectivity, the product is complicated, the yield is low, and it is worthless
Even if the oil is converted into soaps and cracked in the traditional heating method, although the selectivity of the reaction is improved, the reaction products are still complex, the yield of hydrocarbons is also low, and there are many by-products, which are also not of commercial development value.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 100 kg of waste tallow and mutton oil, 60 kg of 30% sodium hydroxide, and 120 kg of ethanol into the reactor, open the condensing reflux device, heat to 90°C, stir and react for 1.2 hours, take it out and cool it, and take out the crude glycerol in the lower layer by liquid separation Components, organic solvent recovery, glycerin refining and phosphate collection and utilization. The fatty acid sodium salt in the upper layer was vacuum-dried at 50°C for 8-24 hours, and the obtained fatty acid sodium salt was decarboxylated and cracked using a continuous microwave device. The microwave power was adjusted to 3500W, and the feeding rate was 200g / min. The condensed gas is used as the fuel of the gas generator to generate electricity and supply the electric energy of the whole microwave system; the quality of the collected liquid product is 78 kg, and the total yield is 78%. The liquid product is subjected to rectification to obtain 24 kg of gasoline (C6-C10) and kerosen...

Embodiment 2

[0019] Add 100 kg of eucalyptus oil, 50 kg of 30% sodium hydroxide, and 100 kg of ethanol into the reactor, turn on the condensation reflux device, heat to 80°C, stir and react for 1 hour, take it out and cool it, and take out the crude glycerol component in the lower layer by liquid separation , for organic solvent recovery, glycerol refining and phosphate collection and utilization. The fatty acid sodium salt in the upper layer was vacuum-dried at 50°C for 8-24 hours, and the obtained fatty acid sodium salt was decarboxylated and cracked using a continuous microwave device. The microwave power was adjusted to 3000W, and the feeding rate was 200g / min. The condensed gas is used as the fuel of the gas generator to generate electricity and supply the electric energy of the entire microwave system; the quality of the collected liquid product is 82 kg, and the total yield is 82%. The liquid product is subjected to rectification to obtain 26 kg of gasoline (C6-C10) and kerosene ( C...

Embodiment 3

[0021] Add 100 kg of Chinese tallow tree oil, 50 kg of 30% sodium hydroxide, and 100 kg of ethanol into the reactor, open the condensing reflux device, heat to 80°C, stir and react for 1 hour, take it out and cool it, take out the crude glycerin component in the lower layer by liquid separation, and carry out Organic solvent recovery, glycerin refining and phosphate collection and utilization. The fatty acid sodium salt in the upper layer was vacuum-dried at 50°C for 8-24 hours, and the obtained fatty acid sodium salt was decarboxylated and cracked using a continuous microwave device. The microwave power was adjusted to 3000W, and the feeding rate was 200g / min. The condensed gas is used as the fuel of the gas generator to generate electricity and supply the electric energy of the whole microwave system; the quality of the collected liquid product is 80 kg, and the total yield is 80%. C11-C16) 56 kg; about 5 kg of solid residue, the main component is sodium carbonate, which can...

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Abstract

The invention relates to a method for preparing hydrocarbon fuel by using a microwave-assisted catalytic soap decarboxylation method. The method comprises the following steps of: (1) adding alkali liquor and low-carbon alcohol of which amounts are equal to or higher than a saponification value to waste animal fat or waste plant fat; (2) after saponification is ended, standing for demixing; (3) transferring fatty acid salt into a continuous type microwave cracking reactor; and (4) adding 40 percent by mass of phosphoric acid in a glycerol layer obtained in the step (2) while stirring. The invention has the technical effects that: (1) fatty acid salt hydrocarbon reaction is efficiently realized to finally obtain a hydrocarbon mixture; (2) various high-grade liquid fuels same as gasoline and aviation kerosene can be obtained through rectification, and various defects existing in the preparation of biodiesel by using the waste animal fat or the waste plant fat are overcome; and (3) glycerol which is a co-product obtained in the saponification reaction process is easier to purify than a co-product generated in the production of the biodiesel, and the commercial value of products is higher.

Description

technical field [0001] The invention relates to a method for preparing hydrocarbon fuel, in particular to a method for preparing hydrocarbon fuel by microwave-assisted catalytic soap decarboxylation. Background technique [0002] Energy is the material basis for human survival and development, but the limited and non-renewable nature of mineral energy resources and the environmental pollution caused by their use make people pay more and more attention to the development and utilization of new energy sources. Entering the 21st century, human beings are facing more serious energy problems, and people's consumption of oil has also increased. The fossil energy reserves such as coal and oil that can be developed and utilized on the earth will be 200 years and 30 to 40 years respectively. If it is depleted within ten years, natural gas can only be used for 60 years according to the reserve-production ratio. Therefore, the problem of energy shortage will plague the development of ...

Claims

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Application Information

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IPC IPC(8): C10G3/00C07C31/22C07C27/02
CPCY02P30/20
Inventor 刘玉环阮榕生王允圃万益琴张锦胜彭红
Owner NANCHANG UNIV
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